diff --git a/CSS/Style.css b/CSS/Style.css
index f8dcd48..8d6bb2e 100644
--- a/CSS/Style.css
+++ b/CSS/Style.css
@@ -73,3 +73,11 @@ body::-webkit-scrollbar- {
     both;
   animation: text-pop-up-top 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
 }
+
+
+iframe{
+  margin: auto;
+  width: 100%;
+  border: 0;
+  
+}
\ No newline at end of file
diff --git a/index.html b/index.html
index 217348e..c7dace3 100644
--- a/index.html
+++ b/index.html
@@ -16,5 +16,41 @@
     <div class="content">
       <h1 class="text-pop-up-top">Ethan Pisani.</h1>
     </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
+    <div>
+      <iframe src="./threejs-test" height="200" width="300" title="Iframe Example"></iframe>
+    </div>
   </body>
 </html>
diff --git a/js/three.js b/js/three.js
new file mode 100644
index 0000000..804eded
--- /dev/null
+++ b/js/three.js
@@ -0,0 +1,38464 @@
+// threejs.org/license
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+	typeof define === 'function' && define.amd ? define(['exports'], factory) :
+	(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.THREE = {}));
+}(this, (function (exports) { 'use strict';
+
+	/**
+	 * Copyright (c) 2014-present, Facebook, Inc.
+	 *
+	 * This source code is licensed under the MIT license found in the
+	 * LICENSE file in the root directory of this source tree.
+	 */
+	var runtime = function (exports) {
+
+		var Op = Object.prototype;
+		var hasOwn = Op.hasOwnProperty;
+		var undefined$1; // More compressible than void 0.
+
+		var $Symbol = typeof Symbol === "function" ? Symbol : {};
+		var iteratorSymbol = $Symbol.iterator || "@@iterator";
+		var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
+		var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
+
+		function define(obj, key, value) {
+			Object.defineProperty(obj, key, {
+				value: value,
+				enumerable: true,
+				configurable: true,
+				writable: true
+			});
+			return obj[key];
+		}
+
+		try {
+			// IE 8 has a broken Object.defineProperty that only works on DOM objects.
+			define({}, "");
+		} catch (err) {
+			define = function define(obj, key, value) {
+				return obj[key] = value;
+			};
+		}
+
+		function wrap(innerFn, outerFn, self, tryLocsList) {
+			// If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
+			var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
+			var generator = Object.create(protoGenerator.prototype);
+			var context = new Context(tryLocsList || []); // The ._invoke method unifies the implementations of the .next,
+			// .throw, and .return methods.
+
+			generator._invoke = makeInvokeMethod(innerFn, self, context);
+			return generator;
+		}
+
+		exports.wrap = wrap; // Try/catch helper to minimize deoptimizations. Returns a completion
+		// record like context.tryEntries[i].completion. This interface could
+		// have been (and was previously) designed to take a closure to be
+		// invoked without arguments, but in all the cases we care about we
+		// already have an existing method we want to call, so there's no need
+		// to create a new function object. We can even get away with assuming
+		// the method takes exactly one argument, since that happens to be true
+		// in every case, so we don't have to touch the arguments object. The
+		// only additional allocation required is the completion record, which
+		// has a stable shape and so hopefully should be cheap to allocate.
+
+		function tryCatch(fn, obj, arg) {
+			try {
+				return {
+					type: "normal",
+					arg: fn.call(obj, arg)
+				};
+			} catch (err) {
+				return {
+					type: "throw",
+					arg: err
+				};
+			}
+		}
+
+		var GenStateSuspendedStart = "suspendedStart";
+		var GenStateSuspendedYield = "suspendedYield";
+		var GenStateExecuting = "executing";
+		var GenStateCompleted = "completed"; // Returning this object from the innerFn has the same effect as
+		// breaking out of the dispatch switch statement.
+
+		var ContinueSentinel = {}; // Dummy constructor functions that we use as the .constructor and
+		// .constructor.prototype properties for functions that return Generator
+		// objects. For full spec compliance, you may wish to configure your
+		// minifier not to mangle the names of these two functions.
+
+		function Generator() {}
+
+		function GeneratorFunction() {}
+
+		function GeneratorFunctionPrototype() {} // This is a polyfill for %IteratorPrototype% for environments that
+		// don't natively support it.
+
+
+		var IteratorPrototype = {};
+
+		IteratorPrototype[iteratorSymbol] = function () {
+			return this;
+		};
+
+		var getProto = Object.getPrototypeOf;
+		var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
+
+		if (NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
+			// This environment has a native %IteratorPrototype%; use it instead
+			// of the polyfill.
+			IteratorPrototype = NativeIteratorPrototype;
+		}
+
+		var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);
+		GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
+		GeneratorFunctionPrototype.constructor = GeneratorFunction;
+		GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, "GeneratorFunction"); // Helper for defining the .next, .throw, and .return methods of the
+		// Iterator interface in terms of a single ._invoke method.
+
+		function defineIteratorMethods(prototype) {
+			["next", "throw", "return"].forEach(function (method) {
+				define(prototype, method, function (arg) {
+					return this._invoke(method, arg);
+				});
+			});
+		}
+
+		exports.isGeneratorFunction = function (genFun) {
+			var ctor = typeof genFun === "function" && genFun.constructor;
+			return ctor ? ctor === GeneratorFunction || // For the native GeneratorFunction constructor, the best we can
+			// do is to check its .name property.
+			(ctor.displayName || ctor.name) === "GeneratorFunction" : false;
+		};
+
+		exports.mark = function (genFun) {
+			if (Object.setPrototypeOf) {
+				Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
+			} else {
+				genFun.__proto__ = GeneratorFunctionPrototype;
+				define(genFun, toStringTagSymbol, "GeneratorFunction");
+			}
+
+			genFun.prototype = Object.create(Gp);
+			return genFun;
+		}; // Within the body of any async function, `await x` is transformed to
+		// `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
+		// `hasOwn.call(value, "__await")` to determine if the yielded value is
+		// meant to be awaited.
+
+
+		exports.awrap = function (arg) {
+			return {
+				__await: arg
+			};
+		};
+
+		function AsyncIterator(generator, PromiseImpl) {
+			function invoke(method, arg, resolve, reject) {
+				var record = tryCatch(generator[method], generator, arg);
+
+				if (record.type === "throw") {
+					reject(record.arg);
+				} else {
+					var result = record.arg;
+					var value = result.value;
+
+					if (value && typeof value === "object" && hasOwn.call(value, "__await")) {
+						return PromiseImpl.resolve(value.__await).then(function (value) {
+							invoke("next", value, resolve, reject);
+						}, function (err) {
+							invoke("throw", err, resolve, reject);
+						});
+					}
+
+					return PromiseImpl.resolve(value).then(function (unwrapped) {
+						// When a yielded Promise is resolved, its final value becomes
+						// the .value of the Promise<{value,done}> result for the
+						// current iteration.
+						result.value = unwrapped;
+						resolve(result);
+					}, function (error) {
+						// If a rejected Promise was yielded, throw the rejection back
+						// into the async generator function so it can be handled there.
+						return invoke("throw", error, resolve, reject);
+					});
+				}
+			}
+
+			var previousPromise;
+
+			function enqueue(method, arg) {
+				function callInvokeWithMethodAndArg() {
+					return new PromiseImpl(function (resolve, reject) {
+						invoke(method, arg, resolve, reject);
+					});
+				}
+
+				return previousPromise = // If enqueue has been called before, then we want to wait until
+				// all previous Promises have been resolved before calling invoke,
+				// so that results are always delivered in the correct order. If
+				// enqueue has not been called before, then it is important to
+				// call invoke immediately, without waiting on a callback to fire,
+				// so that the async generator function has the opportunity to do
+				// any necessary setup in a predictable way. This predictability
+				// is why the Promise constructor synchronously invokes its
+				// executor callback, and why async functions synchronously
+				// execute code before the first await. Since we implement simple
+				// async functions in terms of async generators, it is especially
+				// important to get this right, even though it requires care.
+				previousPromise ? previousPromise.then(callInvokeWithMethodAndArg, // Avoid propagating failures to Promises returned by later
+				// invocations of the iterator.
+				callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
+			} // Define the unified helper method that is used to implement .next,
+			// .throw, and .return (see defineIteratorMethods).
+
+
+			this._invoke = enqueue;
+		}
+
+		defineIteratorMethods(AsyncIterator.prototype);
+
+		AsyncIterator.prototype[asyncIteratorSymbol] = function () {
+			return this;
+		};
+
+		exports.AsyncIterator = AsyncIterator; // Note that simple async functions are implemented on top of
+		// AsyncIterator objects; they just return a Promise for the value of
+		// the final result produced by the iterator.
+
+		exports.async = function (innerFn, outerFn, self, tryLocsList, PromiseImpl) {
+			if (PromiseImpl === void 0) PromiseImpl = Promise;
+			var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList), PromiseImpl);
+			return exports.isGeneratorFunction(outerFn) ? iter // If outerFn is a generator, return the full iterator.
+			: iter.next().then(function (result) {
+				return result.done ? result.value : iter.next();
+			});
+		};
+
+		function makeInvokeMethod(innerFn, self, context) {
+			var state = GenStateSuspendedStart;
+			return function invoke(method, arg) {
+				if (state === GenStateExecuting) {
+					throw new Error("Generator is already running");
+				}
+
+				if (state === GenStateCompleted) {
+					if (method === "throw") {
+						throw arg;
+					} // Be forgiving, per 25.3.3.3.3 of the spec:
+					// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
+
+
+					return doneResult();
+				}
+
+				context.method = method;
+				context.arg = arg;
+
+				while (true) {
+					var delegate = context.delegate;
+
+					if (delegate) {
+						var delegateResult = maybeInvokeDelegate(delegate, context);
+
+						if (delegateResult) {
+							if (delegateResult === ContinueSentinel) continue;
+							return delegateResult;
+						}
+					}
+
+					if (context.method === "next") {
+						// Setting context._sent for legacy support of Babel's
+						// function.sent implementation.
+						context.sent = context._sent = context.arg;
+					} else if (context.method === "throw") {
+						if (state === GenStateSuspendedStart) {
+							state = GenStateCompleted;
+							throw context.arg;
+						}
+
+						context.dispatchException(context.arg);
+					} else if (context.method === "return") {
+						context.abrupt("return", context.arg);
+					}
+
+					state = GenStateExecuting;
+					var record = tryCatch(innerFn, self, context);
+
+					if (record.type === "normal") {
+						// If an exception is thrown from innerFn, we leave state ===
+						// GenStateExecuting and loop back for another invocation.
+						state = context.done ? GenStateCompleted : GenStateSuspendedYield;
+
+						if (record.arg === ContinueSentinel) {
+							continue;
+						}
+
+						return {
+							value: record.arg,
+							done: context.done
+						};
+					} else if (record.type === "throw") {
+						state = GenStateCompleted; // Dispatch the exception by looping back around to the
+						// context.dispatchException(context.arg) call above.
+
+						context.method = "throw";
+						context.arg = record.arg;
+					}
+				}
+			};
+		} // Call delegate.iterator[context.method](context.arg) and handle the
+		// result, either by returning a { value, done } result from the
+		// delegate iterator, or by modifying context.method and context.arg,
+		// setting context.delegate to null, and returning the ContinueSentinel.
+
+
+		function maybeInvokeDelegate(delegate, context) {
+			var method = delegate.iterator[context.method];
+
+			if (method === undefined$1) {
+				// A .throw or .return when the delegate iterator has no .throw
+				// method always terminates the yield* loop.
+				context.delegate = null;
+
+				if (context.method === "throw") {
+					// Note: ["return"] must be used for ES3 parsing compatibility.
+					if (delegate.iterator["return"]) {
+						// If the delegate iterator has a return method, give it a
+						// chance to clean up.
+						context.method = "return";
+						context.arg = undefined$1;
+						maybeInvokeDelegate(delegate, context);
+
+						if (context.method === "throw") {
+							// If maybeInvokeDelegate(context) changed context.method from
+							// "return" to "throw", let that override the TypeError below.
+							return ContinueSentinel;
+						}
+					}
+
+					context.method = "throw";
+					context.arg = new TypeError("The iterator does not provide a 'throw' method");
+				}
+
+				return ContinueSentinel;
+			}
+
+			var record = tryCatch(method, delegate.iterator, context.arg);
+
+			if (record.type === "throw") {
+				context.method = "throw";
+				context.arg = record.arg;
+				context.delegate = null;
+				return ContinueSentinel;
+			}
+
+			var info = record.arg;
+
+			if (!info) {
+				context.method = "throw";
+				context.arg = new TypeError("iterator result is not an object");
+				context.delegate = null;
+				return ContinueSentinel;
+			}
+
+			if (info.done) {
+				// Assign the result of the finished delegate to the temporary
+				// variable specified by delegate.resultName (see delegateYield).
+				context[delegate.resultName] = info.value; // Resume execution at the desired location (see delegateYield).
+
+				context.next = delegate.nextLoc; // If context.method was "throw" but the delegate handled the
+				// exception, let the outer generator proceed normally. If
+				// context.method was "next", forget context.arg since it has been
+				// "consumed" by the delegate iterator. If context.method was
+				// "return", allow the original .return call to continue in the
+				// outer generator.
+
+				if (context.method !== "return") {
+					context.method = "next";
+					context.arg = undefined$1;
+				}
+			} else {
+				// Re-yield the result returned by the delegate method.
+				return info;
+			} // The delegate iterator is finished, so forget it and continue with
+			// the outer generator.
+
+
+			context.delegate = null;
+			return ContinueSentinel;
+		} // Define Generator.prototype.{next,throw,return} in terms of the
+		// unified ._invoke helper method.
+
+
+		defineIteratorMethods(Gp);
+		define(Gp, toStringTagSymbol, "Generator"); // A Generator should always return itself as the iterator object when the
+		// @@iterator function is called on it. Some browsers' implementations of the
+		// iterator prototype chain incorrectly implement this, causing the Generator
+		// object to not be returned from this call. This ensures that doesn't happen.
+		// See https://github.com/facebook/regenerator/issues/274 for more details.
+
+		Gp[iteratorSymbol] = function () {
+			return this;
+		};
+
+		Gp.toString = function () {
+			return "[object Generator]";
+		};
+
+		function pushTryEntry(locs) {
+			var entry = {
+				tryLoc: locs[0]
+			};
+
+			if (1 in locs) {
+				entry.catchLoc = locs[1];
+			}
+
+			if (2 in locs) {
+				entry.finallyLoc = locs[2];
+				entry.afterLoc = locs[3];
+			}
+
+			this.tryEntries.push(entry);
+		}
+
+		function resetTryEntry(entry) {
+			var record = entry.completion || {};
+			record.type = "normal";
+			delete record.arg;
+			entry.completion = record;
+		}
+
+		function Context(tryLocsList) {
+			// The root entry object (effectively a try statement without a catch
+			// or a finally block) gives us a place to store values thrown from
+			// locations where there is no enclosing try statement.
+			this.tryEntries = [{
+				tryLoc: "root"
+			}];
+			tryLocsList.forEach(pushTryEntry, this);
+			this.reset(true);
+		}
+
+		exports.keys = function (object) {
+			var keys = [];
+
+			for (var key in object) {
+				keys.push(key);
+			}
+
+			keys.reverse(); // Rather than returning an object with a next method, we keep
+			// things simple and return the next function itself.
+
+			return function next() {
+				while (keys.length) {
+					var key = keys.pop();
+
+					if (key in object) {
+						next.value = key;
+						next.done = false;
+						return next;
+					}
+				} // To avoid creating an additional object, we just hang the .value
+				// and .done properties off the next function object itself. This
+				// also ensures that the minifier will not anonymize the function.
+
+
+				next.done = true;
+				return next;
+			};
+		};
+
+		function values(iterable) {
+			if (iterable) {
+				var iteratorMethod = iterable[iteratorSymbol];
+
+				if (iteratorMethod) {
+					return iteratorMethod.call(iterable);
+				}
+
+				if (typeof iterable.next === "function") {
+					return iterable;
+				}
+
+				if (!isNaN(iterable.length)) {
+					var i = -1,
+							next = function next() {
+						while (++i < iterable.length) {
+							if (hasOwn.call(iterable, i)) {
+								next.value = iterable[i];
+								next.done = false;
+								return next;
+							}
+						}
+
+						next.value = undefined$1;
+						next.done = true;
+						return next;
+					};
+
+					return next.next = next;
+				}
+			} // Return an iterator with no values.
+
+
+			return {
+				next: doneResult
+			};
+		}
+
+		exports.values = values;
+
+		function doneResult() {
+			return {
+				value: undefined$1,
+				done: true
+			};
+		}
+
+		Context.prototype = {
+			constructor: Context,
+			reset: function reset(skipTempReset) {
+				this.prev = 0;
+				this.next = 0; // Resetting context._sent for legacy support of Babel's
+				// function.sent implementation.
+
+				this.sent = this._sent = undefined$1;
+				this.done = false;
+				this.delegate = null;
+				this.method = "next";
+				this.arg = undefined$1;
+				this.tryEntries.forEach(resetTryEntry);
+
+				if (!skipTempReset) {
+					for (var name in this) {
+						// Not sure about the optimal order of these conditions:
+						if (name.charAt(0) === "t" && hasOwn.call(this, name) && !isNaN(+name.slice(1))) {
+							this[name] = undefined$1;
+						}
+					}
+				}
+			},
+			stop: function stop() {
+				this.done = true;
+				var rootEntry = this.tryEntries[0];
+				var rootRecord = rootEntry.completion;
+
+				if (rootRecord.type === "throw") {
+					throw rootRecord.arg;
+				}
+
+				return this.rval;
+			},
+			dispatchException: function dispatchException(exception) {
+				if (this.done) {
+					throw exception;
+				}
+
+				var context = this;
+
+				function handle(loc, caught) {
+					record.type = "throw";
+					record.arg = exception;
+					context.next = loc;
+
+					if (caught) {
+						// If the dispatched exception was caught by a catch block,
+						// then let that catch block handle the exception normally.
+						context.method = "next";
+						context.arg = undefined$1;
+					}
+
+					return !!caught;
+				}
+
+				for (var i = this.tryEntries.length - 1; i >= 0; --i) {
+					var entry = this.tryEntries[i];
+					var record = entry.completion;
+
+					if (entry.tryLoc === "root") {
+						// Exception thrown outside of any try block that could handle
+						// it, so set the completion value of the entire function to
+						// throw the exception.
+						return handle("end");
+					}
+
+					if (entry.tryLoc <= this.prev) {
+						var hasCatch = hasOwn.call(entry, "catchLoc");
+						var hasFinally = hasOwn.call(entry, "finallyLoc");
+
+						if (hasCatch && hasFinally) {
+							if (this.prev < entry.catchLoc) {
+								return handle(entry.catchLoc, true);
+							} else if (this.prev < entry.finallyLoc) {
+								return handle(entry.finallyLoc);
+							}
+						} else if (hasCatch) {
+							if (this.prev < entry.catchLoc) {
+								return handle(entry.catchLoc, true);
+							}
+						} else if (hasFinally) {
+							if (this.prev < entry.finallyLoc) {
+								return handle(entry.finallyLoc);
+							}
+						} else {
+							throw new Error("try statement without catch or finally");
+						}
+					}
+				}
+			},
+			abrupt: function abrupt(type, arg) {
+				for (var i = this.tryEntries.length - 1; i >= 0; --i) {
+					var entry = this.tryEntries[i];
+
+					if (entry.tryLoc <= this.prev && hasOwn.call(entry, "finallyLoc") && this.prev < entry.finallyLoc) {
+						var finallyEntry = entry;
+						break;
+					}
+				}
+
+				if (finallyEntry && (type === "break" || type === "continue") && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc) {
+					// Ignore the finally entry if control is not jumping to a
+					// location outside the try/catch block.
+					finallyEntry = null;
+				}
+
+				var record = finallyEntry ? finallyEntry.completion : {};
+				record.type = type;
+				record.arg = arg;
+
+				if (finallyEntry) {
+					this.method = "next";
+					this.next = finallyEntry.finallyLoc;
+					return ContinueSentinel;
+				}
+
+				return this.complete(record);
+			},
+			complete: function complete(record, afterLoc) {
+				if (record.type === "throw") {
+					throw record.arg;
+				}
+
+				if (record.type === "break" || record.type === "continue") {
+					this.next = record.arg;
+				} else if (record.type === "return") {
+					this.rval = this.arg = record.arg;
+					this.method = "return";
+					this.next = "end";
+				} else if (record.type === "normal" && afterLoc) {
+					this.next = afterLoc;
+				}
+
+				return ContinueSentinel;
+			},
+			finish: function finish(finallyLoc) {
+				for (var i = this.tryEntries.length - 1; i >= 0; --i) {
+					var entry = this.tryEntries[i];
+
+					if (entry.finallyLoc === finallyLoc) {
+						this.complete(entry.completion, entry.afterLoc);
+						resetTryEntry(entry);
+						return ContinueSentinel;
+					}
+				}
+			},
+			"catch": function _catch(tryLoc) {
+				for (var i = this.tryEntries.length - 1; i >= 0; --i) {
+					var entry = this.tryEntries[i];
+
+					if (entry.tryLoc === tryLoc) {
+						var record = entry.completion;
+
+						if (record.type === "throw") {
+							var thrown = record.arg;
+							resetTryEntry(entry);
+						}
+
+						return thrown;
+					}
+				} // The context.catch method must only be called with a location
+				// argument that corresponds to a known catch block.
+
+
+				throw new Error("illegal catch attempt");
+			},
+			delegateYield: function delegateYield(iterable, resultName, nextLoc) {
+				this.delegate = {
+					iterator: values(iterable),
+					resultName: resultName,
+					nextLoc: nextLoc
+				};
+
+				if (this.method === "next") {
+					// Deliberately forget the last sent value so that we don't
+					// accidentally pass it on to the delegate.
+					this.arg = undefined$1;
+				}
+
+				return ContinueSentinel;
+			}
+		}; // Regardless of whether this script is executing as a CommonJS module
+		// or not, return the runtime object so that we can declare the variable
+		// regeneratorRuntime in the outer scope, which allows this module to be
+		// injected easily by `bin/regenerator --include-runtime script.js`.
+
+		return exports;
+	}( // If this script is executing as a CommonJS module, use module.exports
+	// as the regeneratorRuntime namespace. Otherwise create a new empty
+	// object. Either way, the resulting object will be used to initialize
+	// the regeneratorRuntime variable at the top of this file.
+	typeof module === "object" ? module.exports : {});
+
+	try {
+		regeneratorRuntime = runtime;
+	} catch (accidentalStrictMode) {
+		// This module should not be running in strict mode, so the above
+		// assignment should always work unless something is misconfigured. Just
+		// in case runtime.js accidentally runs in strict mode, we can escape
+		// strict mode using a global Function call. This could conceivably fail
+		// if a Content Security Policy forbids using Function, but in that case
+		// the proper solution is to fix the accidental strict mode problem. If
+		// you've misconfigured your bundler to force strict mode and applied a
+		// CSP to forbid Function, and you're not willing to fix either of those
+		// problems, please detail your unique predicament in a GitHub issue.
+		Function("r", "regeneratorRuntime = r")(runtime);
+	}
+
+	var REVISION = '126';
+	var MOUSE = {
+		LEFT: 0,
+		MIDDLE: 1,
+		RIGHT: 2,
+		ROTATE: 0,
+		DOLLY: 1,
+		PAN: 2
+	};
+	var TOUCH = {
+		ROTATE: 0,
+		PAN: 1,
+		DOLLY_PAN: 2,
+		DOLLY_ROTATE: 3
+	};
+	var CullFaceNone = 0;
+	var CullFaceBack = 1;
+	var CullFaceFront = 2;
+	var CullFaceFrontBack = 3;
+	var BasicShadowMap = 0;
+	var PCFShadowMap = 1;
+	var PCFSoftShadowMap = 2;
+	var VSMShadowMap = 3;
+	var FrontSide = 0;
+	var BackSide = 1;
+	var DoubleSide = 2;
+	var FlatShading = 1;
+	var SmoothShading = 2;
+	var NoBlending = 0;
+	var NormalBlending = 1;
+	var AdditiveBlending = 2;
+	var SubtractiveBlending = 3;
+	var MultiplyBlending = 4;
+	var CustomBlending = 5;
+	var AddEquation = 100;
+	var SubtractEquation = 101;
+	var ReverseSubtractEquation = 102;
+	var MinEquation = 103;
+	var MaxEquation = 104;
+	var ZeroFactor = 200;
+	var OneFactor = 201;
+	var SrcColorFactor = 202;
+	var OneMinusSrcColorFactor = 203;
+	var SrcAlphaFactor = 204;
+	var OneMinusSrcAlphaFactor = 205;
+	var DstAlphaFactor = 206;
+	var OneMinusDstAlphaFactor = 207;
+	var DstColorFactor = 208;
+	var OneMinusDstColorFactor = 209;
+	var SrcAlphaSaturateFactor = 210;
+	var NeverDepth = 0;
+	var AlwaysDepth = 1;
+	var LessDepth = 2;
+	var LessEqualDepth = 3;
+	var EqualDepth = 4;
+	var GreaterEqualDepth = 5;
+	var GreaterDepth = 6;
+	var NotEqualDepth = 7;
+	var MultiplyOperation = 0;
+	var MixOperation = 1;
+	var AddOperation = 2;
+	var NoToneMapping = 0;
+	var LinearToneMapping = 1;
+	var ReinhardToneMapping = 2;
+	var CineonToneMapping = 3;
+	var ACESFilmicToneMapping = 4;
+	var CustomToneMapping = 5;
+	var UVMapping = 300;
+	var CubeReflectionMapping = 301;
+	var CubeRefractionMapping = 302;
+	var EquirectangularReflectionMapping = 303;
+	var EquirectangularRefractionMapping = 304;
+	var CubeUVReflectionMapping = 306;
+	var CubeUVRefractionMapping = 307;
+	var RepeatWrapping = 1000;
+	var ClampToEdgeWrapping = 1001;
+	var MirroredRepeatWrapping = 1002;
+	var NearestFilter = 1003;
+	var NearestMipmapNearestFilter = 1004;
+	var NearestMipMapNearestFilter = 1004;
+	var NearestMipmapLinearFilter = 1005;
+	var NearestMipMapLinearFilter = 1005;
+	var LinearFilter = 1006;
+	var LinearMipmapNearestFilter = 1007;
+	var LinearMipMapNearestFilter = 1007;
+	var LinearMipmapLinearFilter = 1008;
+	var LinearMipMapLinearFilter = 1008;
+	var UnsignedByteType = 1009;
+	var ByteType = 1010;
+	var ShortType = 1011;
+	var UnsignedShortType = 1012;
+	var IntType = 1013;
+	var UnsignedIntType = 1014;
+	var FloatType = 1015;
+	var HalfFloatType = 1016;
+	var UnsignedShort4444Type = 1017;
+	var UnsignedShort5551Type = 1018;
+	var UnsignedShort565Type = 1019;
+	var UnsignedInt248Type = 1020;
+	var AlphaFormat = 1021;
+	var RGBFormat = 1022;
+	var RGBAFormat = 1023;
+	var LuminanceFormat = 1024;
+	var LuminanceAlphaFormat = 1025;
+	var RGBEFormat = RGBAFormat;
+	var DepthFormat = 1026;
+	var DepthStencilFormat = 1027;
+	var RedFormat = 1028;
+	var RedIntegerFormat = 1029;
+	var RGFormat = 1030;
+	var RGIntegerFormat = 1031;
+	var RGBIntegerFormat = 1032;
+	var RGBAIntegerFormat = 1033;
+	var RGB_S3TC_DXT1_Format = 33776;
+	var RGBA_S3TC_DXT1_Format = 33777;
+	var RGBA_S3TC_DXT3_Format = 33778;
+	var RGBA_S3TC_DXT5_Format = 33779;
+	var RGB_PVRTC_4BPPV1_Format = 35840;
+	var RGB_PVRTC_2BPPV1_Format = 35841;
+	var RGBA_PVRTC_4BPPV1_Format = 35842;
+	var RGBA_PVRTC_2BPPV1_Format = 35843;
+	var RGB_ETC1_Format = 36196;
+	var RGB_ETC2_Format = 37492;
+	var RGBA_ETC2_EAC_Format = 37496;
+	var RGBA_ASTC_4x4_Format = 37808;
+	var RGBA_ASTC_5x4_Format = 37809;
+	var RGBA_ASTC_5x5_Format = 37810;
+	var RGBA_ASTC_6x5_Format = 37811;
+	var RGBA_ASTC_6x6_Format = 37812;
+	var RGBA_ASTC_8x5_Format = 37813;
+	var RGBA_ASTC_8x6_Format = 37814;
+	var RGBA_ASTC_8x8_Format = 37815;
+	var RGBA_ASTC_10x5_Format = 37816;
+	var RGBA_ASTC_10x6_Format = 37817;
+	var RGBA_ASTC_10x8_Format = 37818;
+	var RGBA_ASTC_10x10_Format = 37819;
+	var RGBA_ASTC_12x10_Format = 37820;
+	var RGBA_ASTC_12x12_Format = 37821;
+	var RGBA_BPTC_Format = 36492;
+	var SRGB8_ALPHA8_ASTC_4x4_Format = 37840;
+	var SRGB8_ALPHA8_ASTC_5x4_Format = 37841;
+	var SRGB8_ALPHA8_ASTC_5x5_Format = 37842;
+	var SRGB8_ALPHA8_ASTC_6x5_Format = 37843;
+	var SRGB8_ALPHA8_ASTC_6x6_Format = 37844;
+	var SRGB8_ALPHA8_ASTC_8x5_Format = 37845;
+	var SRGB8_ALPHA8_ASTC_8x6_Format = 37846;
+	var SRGB8_ALPHA8_ASTC_8x8_Format = 37847;
+	var SRGB8_ALPHA8_ASTC_10x5_Format = 37848;
+	var SRGB8_ALPHA8_ASTC_10x6_Format = 37849;
+	var SRGB8_ALPHA8_ASTC_10x8_Format = 37850;
+	var SRGB8_ALPHA8_ASTC_10x10_Format = 37851;
+	var SRGB8_ALPHA8_ASTC_12x10_Format = 37852;
+	var SRGB8_ALPHA8_ASTC_12x12_Format = 37853;
+	var LoopOnce = 2200;
+	var LoopRepeat = 2201;
+	var LoopPingPong = 2202;
+	var InterpolateDiscrete = 2300;
+	var InterpolateLinear = 2301;
+	var InterpolateSmooth = 2302;
+	var ZeroCurvatureEnding = 2400;
+	var ZeroSlopeEnding = 2401;
+	var WrapAroundEnding = 2402;
+	var NormalAnimationBlendMode = 2500;
+	var AdditiveAnimationBlendMode = 2501;
+	var TrianglesDrawMode = 0;
+	var TriangleStripDrawMode = 1;
+	var TriangleFanDrawMode = 2;
+	var LinearEncoding = 3000;
+	var sRGBEncoding = 3001;
+	var GammaEncoding = 3007;
+	var RGBEEncoding = 3002;
+	var LogLuvEncoding = 3003;
+	var RGBM7Encoding = 3004;
+	var RGBM16Encoding = 3005;
+	var RGBDEncoding = 3006;
+	var BasicDepthPacking = 3200;
+	var RGBADepthPacking = 3201;
+	var TangentSpaceNormalMap = 0;
+	var ObjectSpaceNormalMap = 1;
+	var ZeroStencilOp = 0;
+	var KeepStencilOp = 7680;
+	var ReplaceStencilOp = 7681;
+	var IncrementStencilOp = 7682;
+	var DecrementStencilOp = 7683;
+	var IncrementWrapStencilOp = 34055;
+	var DecrementWrapStencilOp = 34056;
+	var InvertStencilOp = 5386;
+	var NeverStencilFunc = 512;
+	var LessStencilFunc = 513;
+	var EqualStencilFunc = 514;
+	var LessEqualStencilFunc = 515;
+	var GreaterStencilFunc = 516;
+	var NotEqualStencilFunc = 517;
+	var GreaterEqualStencilFunc = 518;
+	var AlwaysStencilFunc = 519;
+	var StaticDrawUsage = 35044;
+	var DynamicDrawUsage = 35048;
+	var StreamDrawUsage = 35040;
+	var StaticReadUsage = 35045;
+	var DynamicReadUsage = 35049;
+	var StreamReadUsage = 35041;
+	var StaticCopyUsage = 35046;
+	var DynamicCopyUsage = 35050;
+	var StreamCopyUsage = 35042;
+	var GLSL1 = '100';
+	var GLSL3 = '300 es';
+
+	function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
+		try {
+			var info = gen[key](arg);
+			var value = info.value;
+		} catch (error) {
+			reject(error);
+			return;
+		}
+
+		if (info.done) {
+			resolve(value);
+		} else {
+			Promise.resolve(value).then(_next, _throw);
+		}
+	}
+
+	function _asyncToGenerator(fn) {
+		return function () {
+			var self = this,
+					args = arguments;
+			return new Promise(function (resolve, reject) {
+				var gen = fn.apply(self, args);
+
+				function _next(value) {
+					asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
+				}
+
+				function _throw(err) {
+					asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
+				}
+
+				_next(undefined);
+			});
+		};
+	}
+
+	function _defineProperties(target, props) {
+		for (var i = 0; i < props.length; i++) {
+			var descriptor = props[i];
+			descriptor.enumerable = descriptor.enumerable || false;
+			descriptor.configurable = true;
+			if ("value" in descriptor) descriptor.writable = true;
+			Object.defineProperty(target, descriptor.key, descriptor);
+		}
+	}
+
+	function _createClass(Constructor, protoProps, staticProps) {
+		if (protoProps) _defineProperties(Constructor.prototype, protoProps);
+		if (staticProps) _defineProperties(Constructor, staticProps);
+		return Constructor;
+	}
+
+	function _inheritsLoose(subClass, superClass) {
+		subClass.prototype = Object.create(superClass.prototype);
+		subClass.prototype.constructor = subClass;
+
+		_setPrototypeOf(subClass, superClass);
+	}
+
+	function _setPrototypeOf(o, p) {
+		_setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
+			o.__proto__ = p;
+			return o;
+		};
+
+		return _setPrototypeOf(o, p);
+	}
+
+	function _assertThisInitialized(self) {
+		if (self === void 0) {
+			throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
+		}
+
+		return self;
+	}
+
+	function _unsupportedIterableToArray(o, minLen) {
+		if (!o) return;
+		if (typeof o === "string") return _arrayLikeToArray(o, minLen);
+		var n = Object.prototype.toString.call(o).slice(8, -1);
+		if (n === "Object" && o.constructor) n = o.constructor.name;
+		if (n === "Map" || n === "Set") return Array.from(o);
+		if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
+	}
+
+	function _arrayLikeToArray(arr, len) {
+		if (len == null || len > arr.length) len = arr.length;
+
+		for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
+
+		return arr2;
+	}
+
+	function _createForOfIteratorHelperLoose(o, allowArrayLike) {
+		var it;
+
+		if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) {
+			if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
+				if (it) o = it;
+				var i = 0;
+				return function () {
+					if (i >= o.length) return {
+						done: true
+					};
+					return {
+						done: false,
+						value: o[i++]
+					};
+				};
+			}
+
+			throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+		}
+
+		it = o[Symbol.iterator]();
+		return it.next.bind(it);
+	}
+
+	/**
+	 * https://github.com/mrdoob/eventdispatcher.js/
+	 */
+	function EventDispatcher() {}
+
+	Object.assign(EventDispatcher.prototype, {
+		addEventListener: function addEventListener(type, listener) {
+			if (this._listeners === undefined) this._listeners = {};
+			var listeners = this._listeners;
+
+			if (listeners[type] === undefined) {
+				listeners[type] = [];
+			}
+
+			if (listeners[type].indexOf(listener) === -1) {
+				listeners[type].push(listener);
+			}
+		},
+		hasEventListener: function hasEventListener(type, listener) {
+			if (this._listeners === undefined) return false;
+			var listeners = this._listeners;
+			return listeners[type] !== undefined && listeners[type].indexOf(listener) !== -1;
+		},
+		removeEventListener: function removeEventListener(type, listener) {
+			if (this._listeners === undefined) return;
+			var listeners = this._listeners;
+			var listenerArray = listeners[type];
+
+			if (listenerArray !== undefined) {
+				var index = listenerArray.indexOf(listener);
+
+				if (index !== -1) {
+					listenerArray.splice(index, 1);
+				}
+			}
+		},
+		dispatchEvent: function dispatchEvent(event) {
+			if (this._listeners === undefined) return;
+			var listeners = this._listeners;
+			var listenerArray = listeners[event.type];
+
+			if (listenerArray !== undefined) {
+				event.target = this; // Make a copy, in case listeners are removed while iterating.
+
+				var array = listenerArray.slice(0);
+
+				for (var i = 0, l = array.length; i < l; i++) {
+					array[i].call(this, event);
+				}
+			}
+		}
+	});
+
+	var _lut = [];
+
+	for (var i = 0; i < 256; i++) {
+		_lut[i] = (i < 16 ? '0' : '') + i.toString(16);
+	}
+
+	var _seed = 1234567;
+	var MathUtils = {
+		DEG2RAD: Math.PI / 180,
+		RAD2DEG: 180 / Math.PI,
+		generateUUID: function generateUUID() {
+			// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
+			var d0 = Math.random() * 0xffffffff | 0;
+			var d1 = Math.random() * 0xffffffff | 0;
+			var d2 = Math.random() * 0xffffffff | 0;
+			var d3 = Math.random() * 0xffffffff | 0;
+			var uuid = _lut[d0 & 0xff] + _lut[d0 >> 8 & 0xff] + _lut[d0 >> 16 & 0xff] + _lut[d0 >> 24 & 0xff] + '-' + _lut[d1 & 0xff] + _lut[d1 >> 8 & 0xff] + '-' + _lut[d1 >> 16 & 0x0f | 0x40] + _lut[d1 >> 24 & 0xff] + '-' + _lut[d2 & 0x3f | 0x80] + _lut[d2 >> 8 & 0xff] + '-' + _lut[d2 >> 16 & 0xff] + _lut[d2 >> 24 & 0xff] + _lut[d3 & 0xff] + _lut[d3 >> 8 & 0xff] + _lut[d3 >> 16 & 0xff] + _lut[d3 >> 24 & 0xff]; // .toUpperCase() here flattens concatenated strings to save heap memory space.
+
+			return uuid.toUpperCase();
+		},
+		clamp: function clamp(value, min, max) {
+			return Math.max(min, Math.min(max, value));
+		},
+		// compute euclidian modulo of m % n
+		// https://en.wikipedia.org/wiki/Modulo_operation
+		euclideanModulo: function euclideanModulo(n, m) {
+			return (n % m + m) % m;
+		},
+		// Linear mapping from range <a1, a2> to range <b1, b2>
+		mapLinear: function mapLinear(x, a1, a2, b1, b2) {
+			return b1 + (x - a1) * (b2 - b1) / (a2 - a1);
+		},
+		// https://en.wikipedia.org/wiki/Linear_interpolation
+		lerp: function lerp(x, y, t) {
+			return (1 - t) * x + t * y;
+		},
+		// http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/
+		damp: function damp(x, y, lambda, dt) {
+			return MathUtils.lerp(x, y, 1 - Math.exp(-lambda * dt));
+		},
+		// https://www.desmos.com/calculator/vcsjnyz7x4
+		pingpong: function pingpong(x, length) {
+			if (length === void 0) {
+				length = 1;
+			}
+
+			return length - Math.abs(MathUtils.euclideanModulo(x, length * 2) - length);
+		},
+		// http://en.wikipedia.org/wiki/Smoothstep
+		smoothstep: function smoothstep(x, min, max) {
+			if (x <= min) return 0;
+			if (x >= max) return 1;
+			x = (x - min) / (max - min);
+			return x * x * (3 - 2 * x);
+		},
+		smootherstep: function smootherstep(x, min, max) {
+			if (x <= min) return 0;
+			if (x >= max) return 1;
+			x = (x - min) / (max - min);
+			return x * x * x * (x * (x * 6 - 15) + 10);
+		},
+		// Random integer from <low, high> interval
+		randInt: function randInt(low, high) {
+			return low + Math.floor(Math.random() * (high - low + 1));
+		},
+		// Random float from <low, high> interval
+		randFloat: function randFloat(low, high) {
+			return low + Math.random() * (high - low);
+		},
+		// Random float from <-range/2, range/2> interval
+		randFloatSpread: function randFloatSpread(range) {
+			return range * (0.5 - Math.random());
+		},
+		// Deterministic pseudo-random float in the interval [ 0, 1 ]
+		seededRandom: function seededRandom(s) {
+			if (s !== undefined) _seed = s % 2147483647; // Park-Miller algorithm
+
+			_seed = _seed * 16807 % 2147483647;
+			return (_seed - 1) / 2147483646;
+		},
+		degToRad: function degToRad(degrees) {
+			return degrees * MathUtils.DEG2RAD;
+		},
+		radToDeg: function radToDeg(radians) {
+			return radians * MathUtils.RAD2DEG;
+		},
+		isPowerOfTwo: function isPowerOfTwo(value) {
+			return (value & value - 1) === 0 && value !== 0;
+		},
+		ceilPowerOfTwo: function ceilPowerOfTwo(value) {
+			return Math.pow(2, Math.ceil(Math.log(value) / Math.LN2));
+		},
+		floorPowerOfTwo: function floorPowerOfTwo(value) {
+			return Math.pow(2, Math.floor(Math.log(value) / Math.LN2));
+		},
+		setQuaternionFromProperEuler: function setQuaternionFromProperEuler(q, a, b, c, order) {
+			// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles
+			// rotations are applied to the axes in the order specified by 'order'
+			// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'
+			// angles are in radians
+			var cos = Math.cos;
+			var sin = Math.sin;
+			var c2 = cos(b / 2);
+			var s2 = sin(b / 2);
+			var c13 = cos((a + c) / 2);
+			var s13 = sin((a + c) / 2);
+			var c1_3 = cos((a - c) / 2);
+			var s1_3 = sin((a - c) / 2);
+			var c3_1 = cos((c - a) / 2);
+			var s3_1 = sin((c - a) / 2);
+
+			switch (order) {
+				case 'XYX':
+					q.set(c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13);
+					break;
+
+				case 'YZY':
+					q.set(s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13);
+					break;
+
+				case 'ZXZ':
+					q.set(s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13);
+					break;
+
+				case 'XZX':
+					q.set(c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13);
+					break;
+
+				case 'YXY':
+					q.set(s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13);
+					break;
+
+				case 'ZYZ':
+					q.set(s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13);
+					break;
+
+				default:
+					console.warn('THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order);
+			}
+		}
+	};
+
+	var Vector2 = /*#__PURE__*/function () {
+		function Vector2(x, y) {
+			if (x === void 0) {
+				x = 0;
+			}
+
+			if (y === void 0) {
+				y = 0;
+			}
+
+			this.x = x;
+			this.y = y;
+		}
+
+		var _proto = Vector2.prototype;
+
+		_proto.set = function set(x, y) {
+			this.x = x;
+			this.y = y;
+			return this;
+		};
+
+		_proto.setScalar = function setScalar(scalar) {
+			this.x = scalar;
+			this.y = scalar;
+			return this;
+		};
+
+		_proto.setX = function setX(x) {
+			this.x = x;
+			return this;
+		};
+
+		_proto.setY = function setY(y) {
+			this.y = y;
+			return this;
+		};
+
+		_proto.setComponent = function setComponent(index, value) {
+			switch (index) {
+				case 0:
+					this.x = value;
+					break;
+
+				case 1:
+					this.y = value;
+					break;
+
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+
+			return this;
+		};
+
+		_proto.getComponent = function getComponent(index) {
+			switch (index) {
+				case 0:
+					return this.x;
+
+				case 1:
+					return this.y;
+
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor(this.x, this.y);
+		};
+
+		_proto.copy = function copy(v) {
+			this.x = v.x;
+			this.y = v.y;
+			return this;
+		};
+
+		_proto.add = function add(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
+				return this.addVectors(v, w);
+			}
+
+			this.x += v.x;
+			this.y += v.y;
+			return this;
+		};
+
+		_proto.addScalar = function addScalar(s) {
+			this.x += s;
+			this.y += s;
+			return this;
+		};
+
+		_proto.addVectors = function addVectors(a, b) {
+			this.x = a.x + b.x;
+			this.y = a.y + b.y;
+			return this;
+		};
+
+		_proto.addScaledVector = function addScaledVector(v, s) {
+			this.x += v.x * s;
+			this.y += v.y * s;
+			return this;
+		};
+
+		_proto.sub = function sub(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
+				return this.subVectors(v, w);
+			}
+
+			this.x -= v.x;
+			this.y -= v.y;
+			return this;
+		};
+
+		_proto.subScalar = function subScalar(s) {
+			this.x -= s;
+			this.y -= s;
+			return this;
+		};
+
+		_proto.subVectors = function subVectors(a, b) {
+			this.x = a.x - b.x;
+			this.y = a.y - b.y;
+			return this;
+		};
+
+		_proto.multiply = function multiply(v) {
+			this.x *= v.x;
+			this.y *= v.y;
+			return this;
+		};
+
+		_proto.multiplyScalar = function multiplyScalar(scalar) {
+			this.x *= scalar;
+			this.y *= scalar;
+			return this;
+		};
+
+		_proto.divide = function divide(v) {
+			this.x /= v.x;
+			this.y /= v.y;
+			return this;
+		};
+
+		_proto.divideScalar = function divideScalar(scalar) {
+			return this.multiplyScalar(1 / scalar);
+		};
+
+		_proto.applyMatrix3 = function applyMatrix3(m) {
+			var x = this.x,
+					y = this.y;
+			var e = m.elements;
+			this.x = e[0] * x + e[3] * y + e[6];
+			this.y = e[1] * x + e[4] * y + e[7];
+			return this;
+		};
+
+		_proto.min = function min(v) {
+			this.x = Math.min(this.x, v.x);
+			this.y = Math.min(this.y, v.y);
+			return this;
+		};
+
+		_proto.max = function max(v) {
+			this.x = Math.max(this.x, v.x);
+			this.y = Math.max(this.y, v.y);
+			return this;
+		};
+
+		_proto.clamp = function clamp(min, max) {
+			// assumes min < max, componentwise
+			this.x = Math.max(min.x, Math.min(max.x, this.x));
+			this.y = Math.max(min.y, Math.min(max.y, this.y));
+			return this;
+		};
+
+		_proto.clampScalar = function clampScalar(minVal, maxVal) {
+			this.x = Math.max(minVal, Math.min(maxVal, this.x));
+			this.y = Math.max(minVal, Math.min(maxVal, this.y));
+			return this;
+		};
+
+		_proto.clampLength = function clampLength(min, max) {
+			var length = this.length();
+			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
+		};
+
+		_proto.floor = function floor() {
+			this.x = Math.floor(this.x);
+			this.y = Math.floor(this.y);
+			return this;
+		};
+
+		_proto.ceil = function ceil() {
+			this.x = Math.ceil(this.x);
+			this.y = Math.ceil(this.y);
+			return this;
+		};
+
+		_proto.round = function round() {
+			this.x = Math.round(this.x);
+			this.y = Math.round(this.y);
+			return this;
+		};
+
+		_proto.roundToZero = function roundToZero() {
+			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
+			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
+			return this;
+		};
+
+		_proto.negate = function negate() {
+			this.x = -this.x;
+			this.y = -this.y;
+			return this;
+		};
+
+		_proto.dot = function dot(v) {
+			return this.x * v.x + this.y * v.y;
+		};
+
+		_proto.cross = function cross(v) {
+			return this.x * v.y - this.y * v.x;
+		};
+
+		_proto.lengthSq = function lengthSq() {
+			return this.x * this.x + this.y * this.y;
+		};
+
+		_proto.length = function length() {
+			return Math.sqrt(this.x * this.x + this.y * this.y);
+		};
+
+		_proto.manhattanLength = function manhattanLength() {
+			return Math.abs(this.x) + Math.abs(this.y);
+		};
+
+		_proto.normalize = function normalize() {
+			return this.divideScalar(this.length() || 1);
+		};
+
+		_proto.angle = function angle() {
+			// computes the angle in radians with respect to the positive x-axis
+			var angle = Math.atan2(-this.y, -this.x) + Math.PI;
+			return angle;
+		};
+
+		_proto.distanceTo = function distanceTo(v) {
+			return Math.sqrt(this.distanceToSquared(v));
+		};
+
+		_proto.distanceToSquared = function distanceToSquared(v) {
+			var dx = this.x - v.x,
+					dy = this.y - v.y;
+			return dx * dx + dy * dy;
+		};
+
+		_proto.manhattanDistanceTo = function manhattanDistanceTo(v) {
+			return Math.abs(this.x - v.x) + Math.abs(this.y - v.y);
+		};
+
+		_proto.setLength = function setLength(length) {
+			return this.normalize().multiplyScalar(length);
+		};
+
+		_proto.lerp = function lerp(v, alpha) {
+			this.x += (v.x - this.x) * alpha;
+			this.y += (v.y - this.y) * alpha;
+			return this;
+		};
+
+		_proto.lerpVectors = function lerpVectors(v1, v2, alpha) {
+			this.x = v1.x + (v2.x - v1.x) * alpha;
+			this.y = v1.y + (v2.y - v1.y) * alpha;
+			return this;
+		};
+
+		_proto.equals = function equals(v) {
+			return v.x === this.x && v.y === this.y;
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			this.x = array[offset];
+			this.y = array[offset + 1];
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			array[offset] = this.x;
+			array[offset + 1] = this.y;
+			return array;
+		};
+
+		_proto.fromBufferAttribute = function fromBufferAttribute(attribute, index, offset) {
+			if (offset !== undefined) {
+				console.warn('THREE.Vector2: offset has been removed from .fromBufferAttribute().');
+			}
+
+			this.x = attribute.getX(index);
+			this.y = attribute.getY(index);
+			return this;
+		};
+
+		_proto.rotateAround = function rotateAround(center, angle) {
+			var c = Math.cos(angle),
+					s = Math.sin(angle);
+			var x = this.x - center.x;
+			var y = this.y - center.y;
+			this.x = x * c - y * s + center.x;
+			this.y = x * s + y * c + center.y;
+			return this;
+		};
+
+		_proto.random = function random() {
+			this.x = Math.random();
+			this.y = Math.random();
+			return this;
+		};
+
+		_createClass(Vector2, [{
+			key: "width",
+			get: function get() {
+				return this.x;
+			},
+			set: function set(value) {
+				this.x = value;
+			}
+		}, {
+			key: "height",
+			get: function get() {
+				return this.y;
+			},
+			set: function set(value) {
+				this.y = value;
+			}
+		}]);
+
+		return Vector2;
+	}();
+
+	Vector2.prototype.isVector2 = true;
+
+	var Matrix3 = /*#__PURE__*/function () {
+		function Matrix3() {
+			this.elements = [1, 0, 0, 0, 1, 0, 0, 0, 1];
+
+			if (arguments.length > 0) {
+				console.error('THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.');
+			}
+		}
+
+		var _proto = Matrix3.prototype;
+
+		_proto.set = function set(n11, n12, n13, n21, n22, n23, n31, n32, n33) {
+			var te = this.elements;
+			te[0] = n11;
+			te[1] = n21;
+			te[2] = n31;
+			te[3] = n12;
+			te[4] = n22;
+			te[5] = n32;
+			te[6] = n13;
+			te[7] = n23;
+			te[8] = n33;
+			return this;
+		};
+
+		_proto.identity = function identity() {
+			this.set(1, 0, 0, 0, 1, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.copy = function copy(m) {
+			var te = this.elements;
+			var me = m.elements;
+			te[0] = me[0];
+			te[1] = me[1];
+			te[2] = me[2];
+			te[3] = me[3];
+			te[4] = me[4];
+			te[5] = me[5];
+			te[6] = me[6];
+			te[7] = me[7];
+			te[8] = me[8];
+			return this;
+		};
+
+		_proto.extractBasis = function extractBasis(xAxis, yAxis, zAxis) {
+			xAxis.setFromMatrix3Column(this, 0);
+			yAxis.setFromMatrix3Column(this, 1);
+			zAxis.setFromMatrix3Column(this, 2);
+			return this;
+		};
+
+		_proto.setFromMatrix4 = function setFromMatrix4(m) {
+			var me = m.elements;
+			this.set(me[0], me[4], me[8], me[1], me[5], me[9], me[2], me[6], me[10]);
+			return this;
+		};
+
+		_proto.multiply = function multiply(m) {
+			return this.multiplyMatrices(this, m);
+		};
+
+		_proto.premultiply = function premultiply(m) {
+			return this.multiplyMatrices(m, this);
+		};
+
+		_proto.multiplyMatrices = function multiplyMatrices(a, b) {
+			var ae = a.elements;
+			var be = b.elements;
+			var te = this.elements;
+			var a11 = ae[0],
+					a12 = ae[3],
+					a13 = ae[6];
+			var a21 = ae[1],
+					a22 = ae[4],
+					a23 = ae[7];
+			var a31 = ae[2],
+					a32 = ae[5],
+					a33 = ae[8];
+			var b11 = be[0],
+					b12 = be[3],
+					b13 = be[6];
+			var b21 = be[1],
+					b22 = be[4],
+					b23 = be[7];
+			var b31 = be[2],
+					b32 = be[5],
+					b33 = be[8];
+			te[0] = a11 * b11 + a12 * b21 + a13 * b31;
+			te[3] = a11 * b12 + a12 * b22 + a13 * b32;
+			te[6] = a11 * b13 + a12 * b23 + a13 * b33;
+			te[1] = a21 * b11 + a22 * b21 + a23 * b31;
+			te[4] = a21 * b12 + a22 * b22 + a23 * b32;
+			te[7] = a21 * b13 + a22 * b23 + a23 * b33;
+			te[2] = a31 * b11 + a32 * b21 + a33 * b31;
+			te[5] = a31 * b12 + a32 * b22 + a33 * b32;
+			te[8] = a31 * b13 + a32 * b23 + a33 * b33;
+			return this;
+		};
+
+		_proto.multiplyScalar = function multiplyScalar(s) {
+			var te = this.elements;
+			te[0] *= s;
+			te[3] *= s;
+			te[6] *= s;
+			te[1] *= s;
+			te[4] *= s;
+			te[7] *= s;
+			te[2] *= s;
+			te[5] *= s;
+			te[8] *= s;
+			return this;
+		};
+
+		_proto.determinant = function determinant() {
+			var te = this.elements;
+			var a = te[0],
+					b = te[1],
+					c = te[2],
+					d = te[3],
+					e = te[4],
+					f = te[5],
+					g = te[6],
+					h = te[7],
+					i = te[8];
+			return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
+		};
+
+		_proto.invert = function invert() {
+			var te = this.elements,
+					n11 = te[0],
+					n21 = te[1],
+					n31 = te[2],
+					n12 = te[3],
+					n22 = te[4],
+					n32 = te[5],
+					n13 = te[6],
+					n23 = te[7],
+					n33 = te[8],
+					t11 = n33 * n22 - n32 * n23,
+					t12 = n32 * n13 - n33 * n12,
+					t13 = n23 * n12 - n22 * n13,
+					det = n11 * t11 + n21 * t12 + n31 * t13;
+			if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0);
+			var detInv = 1 / det;
+			te[0] = t11 * detInv;
+			te[1] = (n31 * n23 - n33 * n21) * detInv;
+			te[2] = (n32 * n21 - n31 * n22) * detInv;
+			te[3] = t12 * detInv;
+			te[4] = (n33 * n11 - n31 * n13) * detInv;
+			te[5] = (n31 * n12 - n32 * n11) * detInv;
+			te[6] = t13 * detInv;
+			te[7] = (n21 * n13 - n23 * n11) * detInv;
+			te[8] = (n22 * n11 - n21 * n12) * detInv;
+			return this;
+		};
+
+		_proto.transpose = function transpose() {
+			var tmp;
+			var m = this.elements;
+			tmp = m[1];
+			m[1] = m[3];
+			m[3] = tmp;
+			tmp = m[2];
+			m[2] = m[6];
+			m[6] = tmp;
+			tmp = m[5];
+			m[5] = m[7];
+			m[7] = tmp;
+			return this;
+		};
+
+		_proto.getNormalMatrix = function getNormalMatrix(matrix4) {
+			return this.setFromMatrix4(matrix4).invert().transpose();
+		};
+
+		_proto.transposeIntoArray = function transposeIntoArray(r) {
+			var m = this.elements;
+			r[0] = m[0];
+			r[1] = m[3];
+			r[2] = m[6];
+			r[3] = m[1];
+			r[4] = m[4];
+			r[5] = m[7];
+			r[6] = m[2];
+			r[7] = m[5];
+			r[8] = m[8];
+			return this;
+		};
+
+		_proto.setUvTransform = function setUvTransform(tx, ty, sx, sy, rotation, cx, cy) {
+			var c = Math.cos(rotation);
+			var s = Math.sin(rotation);
+			this.set(sx * c, sx * s, -sx * (c * cx + s * cy) + cx + tx, -sy * s, sy * c, -sy * (-s * cx + c * cy) + cy + ty, 0, 0, 1);
+			return this;
+		};
+
+		_proto.scale = function scale(sx, sy) {
+			var te = this.elements;
+			te[0] *= sx;
+			te[3] *= sx;
+			te[6] *= sx;
+			te[1] *= sy;
+			te[4] *= sy;
+			te[7] *= sy;
+			return this;
+		};
+
+		_proto.rotate = function rotate(theta) {
+			var c = Math.cos(theta);
+			var s = Math.sin(theta);
+			var te = this.elements;
+			var a11 = te[0],
+					a12 = te[3],
+					a13 = te[6];
+			var a21 = te[1],
+					a22 = te[4],
+					a23 = te[7];
+			te[0] = c * a11 + s * a21;
+			te[3] = c * a12 + s * a22;
+			te[6] = c * a13 + s * a23;
+			te[1] = -s * a11 + c * a21;
+			te[4] = -s * a12 + c * a22;
+			te[7] = -s * a13 + c * a23;
+			return this;
+		};
+
+		_proto.translate = function translate(tx, ty) {
+			var te = this.elements;
+			te[0] += tx * te[2];
+			te[3] += tx * te[5];
+			te[6] += tx * te[8];
+			te[1] += ty * te[2];
+			te[4] += ty * te[5];
+			te[7] += ty * te[8];
+			return this;
+		};
+
+		_proto.equals = function equals(matrix) {
+			var te = this.elements;
+			var me = matrix.elements;
+
+			for (var i = 0; i < 9; i++) {
+				if (te[i] !== me[i]) return false;
+			}
+
+			return true;
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			for (var i = 0; i < 9; i++) {
+				this.elements[i] = array[i + offset];
+			}
+
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			var te = this.elements;
+			array[offset] = te[0];
+			array[offset + 1] = te[1];
+			array[offset + 2] = te[2];
+			array[offset + 3] = te[3];
+			array[offset + 4] = te[4];
+			array[offset + 5] = te[5];
+			array[offset + 6] = te[6];
+			array[offset + 7] = te[7];
+			array[offset + 8] = te[8];
+			return array;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().fromArray(this.elements);
+		};
+
+		return Matrix3;
+	}();
+
+	Matrix3.prototype.isMatrix3 = true;
+
+	var _canvas;
+
+	var ImageUtils = {
+		getDataURL: function getDataURL(image) {
+			if (/^data:/i.test(image.src)) {
+				return image.src;
+			}
+
+			if (typeof HTMLCanvasElement == 'undefined') {
+				return image.src;
+			}
+
+			var canvas;
+
+			if (image instanceof HTMLCanvasElement) {
+				canvas = image;
+			} else {
+				if (_canvas === undefined) _canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
+				_canvas.width = image.width;
+				_canvas.height = image.height;
+
+				var context = _canvas.getContext('2d');
+
+				if (image instanceof ImageData) {
+					context.putImageData(image, 0, 0);
+				} else {
+					context.drawImage(image, 0, 0, image.width, image.height);
+				}
+
+				canvas = _canvas;
+			}
+
+			if (canvas.width > 2048 || canvas.height > 2048) {
+				return canvas.toDataURL('image/jpeg', 0.6);
+			} else {
+				return canvas.toDataURL('image/png');
+			}
+		}
+	};
+
+	var textureId = 0;
+
+	var Texture = /*#__PURE__*/function (_EventDispatcher) {
+		_inheritsLoose(Texture, _EventDispatcher);
+
+		function Texture(image, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding) {
+			var _this;
+
+			if (image === void 0) {
+				image = Texture.DEFAULT_IMAGE;
+			}
+
+			if (mapping === void 0) {
+				mapping = Texture.DEFAULT_MAPPING;
+			}
+
+			if (wrapS === void 0) {
+				wrapS = ClampToEdgeWrapping;
+			}
+
+			if (wrapT === void 0) {
+				wrapT = ClampToEdgeWrapping;
+			}
+
+			if (magFilter === void 0) {
+				magFilter = LinearFilter;
+			}
+
+			if (minFilter === void 0) {
+				minFilter = LinearMipmapLinearFilter;
+			}
+
+			if (format === void 0) {
+				format = RGBAFormat;
+			}
+
+			if (type === void 0) {
+				type = UnsignedByteType;
+			}
+
+			if (anisotropy === void 0) {
+				anisotropy = 1;
+			}
+
+			if (encoding === void 0) {
+				encoding = LinearEncoding;
+			}
+
+			_this = _EventDispatcher.call(this) || this;
+			Object.defineProperty(_assertThisInitialized(_this), 'id', {
+				value: textureId++
+			});
+			_this.uuid = MathUtils.generateUUID();
+			_this.name = '';
+			_this.image = image;
+			_this.mipmaps = [];
+			_this.mapping = mapping;
+			_this.wrapS = wrapS;
+			_this.wrapT = wrapT;
+			_this.magFilter = magFilter;
+			_this.minFilter = minFilter;
+			_this.anisotropy = anisotropy;
+			_this.format = format;
+			_this.internalFormat = null;
+			_this.type = type;
+			_this.offset = new Vector2(0, 0);
+			_this.repeat = new Vector2(1, 1);
+			_this.center = new Vector2(0, 0);
+			_this.rotation = 0;
+			_this.matrixAutoUpdate = true;
+			_this.matrix = new Matrix3();
+			_this.generateMipmaps = true;
+			_this.premultiplyAlpha = false;
+			_this.flipY = true;
+			_this.unpackAlignment = 4; // valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)
+			// Values of encoding !== THREE.LinearEncoding only supported on map, envMap and emissiveMap.
+			//
+			// Also changing the encoding after already used by a Material will not automatically make the Material
+			// update. You need to explicitly call Material.needsUpdate to trigger it to recompile.
+
+			_this.encoding = encoding;
+			_this.version = 0;
+			_this.onUpdate = null;
+			return _this;
+		}
+
+		var _proto = Texture.prototype;
+
+		_proto.updateMatrix = function updateMatrix() {
+			this.matrix.setUvTransform(this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y);
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		_proto.copy = function copy(source) {
+			this.name = source.name;
+			this.image = source.image;
+			this.mipmaps = source.mipmaps.slice(0);
+			this.mapping = source.mapping;
+			this.wrapS = source.wrapS;
+			this.wrapT = source.wrapT;
+			this.magFilter = source.magFilter;
+			this.minFilter = source.minFilter;
+			this.anisotropy = source.anisotropy;
+			this.format = source.format;
+			this.internalFormat = source.internalFormat;
+			this.type = source.type;
+			this.offset.copy(source.offset);
+			this.repeat.copy(source.repeat);
+			this.center.copy(source.center);
+			this.rotation = source.rotation;
+			this.matrixAutoUpdate = source.matrixAutoUpdate;
+			this.matrix.copy(source.matrix);
+			this.generateMipmaps = source.generateMipmaps;
+			this.premultiplyAlpha = source.premultiplyAlpha;
+			this.flipY = source.flipY;
+			this.unpackAlignment = source.unpackAlignment;
+			this.encoding = source.encoding;
+			return this;
+		};
+
+		_proto.toJSON = function toJSON(meta) {
+			var isRootObject = meta === undefined || typeof meta === 'string';
+
+			if (!isRootObject && meta.textures[this.uuid] !== undefined) {
+				return meta.textures[this.uuid];
+			}
+
+			var output = {
+				metadata: {
+					version: 4.5,
+					type: 'Texture',
+					generator: 'Texture.toJSON'
+				},
+				uuid: this.uuid,
+				name: this.name,
+				mapping: this.mapping,
+				repeat: [this.repeat.x, this.repeat.y],
+				offset: [this.offset.x, this.offset.y],
+				center: [this.center.x, this.center.y],
+				rotation: this.rotation,
+				wrap: [this.wrapS, this.wrapT],
+				format: this.format,
+				type: this.type,
+				encoding: this.encoding,
+				minFilter: this.minFilter,
+				magFilter: this.magFilter,
+				anisotropy: this.anisotropy,
+				flipY: this.flipY,
+				premultiplyAlpha: this.premultiplyAlpha,
+				unpackAlignment: this.unpackAlignment
+			};
+
+			if (this.image !== undefined) {
+				// TODO: Move to THREE.Image
+				var image = this.image;
+
+				if (image.uuid === undefined) {
+					image.uuid = MathUtils.generateUUID(); // UGH
+				}
+
+				if (!isRootObject && meta.images[image.uuid] === undefined) {
+					var url;
+
+					if (Array.isArray(image)) {
+						// process array of images e.g. CubeTexture
+						url = [];
+
+						for (var i = 0, l = image.length; i < l; i++) {
+							// check cube texture with data textures
+							if (image[i].isDataTexture) {
+								url.push(serializeImage(image[i].image));
+							} else {
+								url.push(serializeImage(image[i]));
+							}
+						}
+					} else {
+						// process single image
+						url = serializeImage(image);
+					}
+
+					meta.images[image.uuid] = {
+						uuid: image.uuid,
+						url: url
+					};
+				}
+
+				output.image = image.uuid;
+			}
+
+			if (!isRootObject) {
+				meta.textures[this.uuid] = output;
+			}
+
+			return output;
+		};
+
+		_proto.dispose = function dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		};
+
+		_proto.transformUv = function transformUv(uv) {
+			if (this.mapping !== UVMapping) return uv;
+			uv.applyMatrix3(this.matrix);
+
+			if (uv.x < 0 || uv.x > 1) {
+				switch (this.wrapS) {
+					case RepeatWrapping:
+						uv.x = uv.x - Math.floor(uv.x);
+						break;
+
+					case ClampToEdgeWrapping:
+						uv.x = uv.x < 0 ? 0 : 1;
+						break;
+
+					case MirroredRepeatWrapping:
+						if (Math.abs(Math.floor(uv.x) % 2) === 1) {
+							uv.x = Math.ceil(uv.x) - uv.x;
+						} else {
+							uv.x = uv.x - Math.floor(uv.x);
+						}
+
+						break;
+				}
+			}
+
+			if (uv.y < 0 || uv.y > 1) {
+				switch (this.wrapT) {
+					case RepeatWrapping:
+						uv.y = uv.y - Math.floor(uv.y);
+						break;
+
+					case ClampToEdgeWrapping:
+						uv.y = uv.y < 0 ? 0 : 1;
+						break;
+
+					case MirroredRepeatWrapping:
+						if (Math.abs(Math.floor(uv.y) % 2) === 1) {
+							uv.y = Math.ceil(uv.y) - uv.y;
+						} else {
+							uv.y = uv.y - Math.floor(uv.y);
+						}
+
+						break;
+				}
+			}
+
+			if (this.flipY) {
+				uv.y = 1 - uv.y;
+			}
+
+			return uv;
+		};
+
+		_createClass(Texture, [{
+			key: "needsUpdate",
+			set: function set(value) {
+				if (value === true) this.version++;
+			}
+		}]);
+
+		return Texture;
+	}(EventDispatcher);
+
+	Texture.DEFAULT_IMAGE = undefined;
+	Texture.DEFAULT_MAPPING = UVMapping;
+	Texture.prototype.isTexture = true;
+
+	function serializeImage(image) {
+		if (typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement || typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap) {
+			// default images
+			return ImageUtils.getDataURL(image);
+		} else {
+			if (image.data) {
+				// images of DataTexture
+				return {
+					data: Array.prototype.slice.call(image.data),
+					width: image.width,
+					height: image.height,
+					type: image.data.constructor.name
+				};
+			} else {
+				console.warn('THREE.Texture: Unable to serialize Texture.');
+				return {};
+			}
+		}
+	}
+
+	var Vector4 = /*#__PURE__*/function () {
+		function Vector4(x, y, z, w) {
+			if (x === void 0) {
+				x = 0;
+			}
+
+			if (y === void 0) {
+				y = 0;
+			}
+
+			if (z === void 0) {
+				z = 0;
+			}
+
+			if (w === void 0) {
+				w = 1;
+			}
+
+			this.x = x;
+			this.y = y;
+			this.z = z;
+			this.w = w;
+		}
+
+		var _proto = Vector4.prototype;
+
+		_proto.set = function set(x, y, z, w) {
+			this.x = x;
+			this.y = y;
+			this.z = z;
+			this.w = w;
+			return this;
+		};
+
+		_proto.setScalar = function setScalar(scalar) {
+			this.x = scalar;
+			this.y = scalar;
+			this.z = scalar;
+			this.w = scalar;
+			return this;
+		};
+
+		_proto.setX = function setX(x) {
+			this.x = x;
+			return this;
+		};
+
+		_proto.setY = function setY(y) {
+			this.y = y;
+			return this;
+		};
+
+		_proto.setZ = function setZ(z) {
+			this.z = z;
+			return this;
+		};
+
+		_proto.setW = function setW(w) {
+			this.w = w;
+			return this;
+		};
+
+		_proto.setComponent = function setComponent(index, value) {
+			switch (index) {
+				case 0:
+					this.x = value;
+					break;
+
+				case 1:
+					this.y = value;
+					break;
+
+				case 2:
+					this.z = value;
+					break;
+
+				case 3:
+					this.w = value;
+					break;
+
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+
+			return this;
+		};
+
+		_proto.getComponent = function getComponent(index) {
+			switch (index) {
+				case 0:
+					return this.x;
+
+				case 1:
+					return this.y;
+
+				case 2:
+					return this.z;
+
+				case 3:
+					return this.w;
+
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor(this.x, this.y, this.z, this.w);
+		};
+
+		_proto.copy = function copy(v) {
+			this.x = v.x;
+			this.y = v.y;
+			this.z = v.z;
+			this.w = v.w !== undefined ? v.w : 1;
+			return this;
+		};
+
+		_proto.add = function add(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector4: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
+				return this.addVectors(v, w);
+			}
+
+			this.x += v.x;
+			this.y += v.y;
+			this.z += v.z;
+			this.w += v.w;
+			return this;
+		};
+
+		_proto.addScalar = function addScalar(s) {
+			this.x += s;
+			this.y += s;
+			this.z += s;
+			this.w += s;
+			return this;
+		};
+
+		_proto.addVectors = function addVectors(a, b) {
+			this.x = a.x + b.x;
+			this.y = a.y + b.y;
+			this.z = a.z + b.z;
+			this.w = a.w + b.w;
+			return this;
+		};
+
+		_proto.addScaledVector = function addScaledVector(v, s) {
+			this.x += v.x * s;
+			this.y += v.y * s;
+			this.z += v.z * s;
+			this.w += v.w * s;
+			return this;
+		};
+
+		_proto.sub = function sub(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
+				return this.subVectors(v, w);
+			}
+
+			this.x -= v.x;
+			this.y -= v.y;
+			this.z -= v.z;
+			this.w -= v.w;
+			return this;
+		};
+
+		_proto.subScalar = function subScalar(s) {
+			this.x -= s;
+			this.y -= s;
+			this.z -= s;
+			this.w -= s;
+			return this;
+		};
+
+		_proto.subVectors = function subVectors(a, b) {
+			this.x = a.x - b.x;
+			this.y = a.y - b.y;
+			this.z = a.z - b.z;
+			this.w = a.w - b.w;
+			return this;
+		};
+
+		_proto.multiply = function multiply(v) {
+			this.x *= v.x;
+			this.y *= v.y;
+			this.z *= v.z;
+			this.w *= v.w;
+			return this;
+		};
+
+		_proto.multiplyScalar = function multiplyScalar(scalar) {
+			this.x *= scalar;
+			this.y *= scalar;
+			this.z *= scalar;
+			this.w *= scalar;
+			return this;
+		};
+
+		_proto.applyMatrix4 = function applyMatrix4(m) {
+			var x = this.x,
+					y = this.y,
+					z = this.z,
+					w = this.w;
+			var e = m.elements;
+			this.x = e[0] * x + e[4] * y + e[8] * z + e[12] * w;
+			this.y = e[1] * x + e[5] * y + e[9] * z + e[13] * w;
+			this.z = e[2] * x + e[6] * y + e[10] * z + e[14] * w;
+			this.w = e[3] * x + e[7] * y + e[11] * z + e[15] * w;
+			return this;
+		};
+
+		_proto.divideScalar = function divideScalar(scalar) {
+			return this.multiplyScalar(1 / scalar);
+		};
+
+		_proto.setAxisAngleFromQuaternion = function setAxisAngleFromQuaternion(q) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm
+			// q is assumed to be normalized
+			this.w = 2 * Math.acos(q.w);
+			var s = Math.sqrt(1 - q.w * q.w);
+
+			if (s < 0.0001) {
+				this.x = 1;
+				this.y = 0;
+				this.z = 0;
+			} else {
+				this.x = q.x / s;
+				this.y = q.y / s;
+				this.z = q.z / s;
+			}
+
+			return this;
+		};
+
+		_proto.setAxisAngleFromRotationMatrix = function setAxisAngleFromRotationMatrix(m) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm
+			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			var angle, x, y, z; // variables for result
+
+			var epsilon = 0.01,
+					// margin to allow for rounding errors
+			epsilon2 = 0.1,
+					// margin to distinguish between 0 and 180 degrees
+			te = m.elements,
+					m11 = te[0],
+					m12 = te[4],
+					m13 = te[8],
+					m21 = te[1],
+					m22 = te[5],
+					m23 = te[9],
+					m31 = te[2],
+					m32 = te[6],
+					m33 = te[10];
+
+			if (Math.abs(m12 - m21) < epsilon && Math.abs(m13 - m31) < epsilon && Math.abs(m23 - m32) < epsilon) {
+				// singularity found
+				// first check for identity matrix which must have +1 for all terms
+				// in leading diagonal and zero in other terms
+				if (Math.abs(m12 + m21) < epsilon2 && Math.abs(m13 + m31) < epsilon2 && Math.abs(m23 + m32) < epsilon2 && Math.abs(m11 + m22 + m33 - 3) < epsilon2) {
+					// this singularity is identity matrix so angle = 0
+					this.set(1, 0, 0, 0);
+					return this; // zero angle, arbitrary axis
+				} // otherwise this singularity is angle = 180
+
+
+				angle = Math.PI;
+				var xx = (m11 + 1) / 2;
+				var yy = (m22 + 1) / 2;
+				var zz = (m33 + 1) / 2;
+				var xy = (m12 + m21) / 4;
+				var xz = (m13 + m31) / 4;
+				var yz = (m23 + m32) / 4;
+
+				if (xx > yy && xx > zz) {
+					// m11 is the largest diagonal term
+					if (xx < epsilon) {
+						x = 0;
+						y = 0.707106781;
+						z = 0.707106781;
+					} else {
+						x = Math.sqrt(xx);
+						y = xy / x;
+						z = xz / x;
+					}
+				} else if (yy > zz) {
+					// m22 is the largest diagonal term
+					if (yy < epsilon) {
+						x = 0.707106781;
+						y = 0;
+						z = 0.707106781;
+					} else {
+						y = Math.sqrt(yy);
+						x = xy / y;
+						z = yz / y;
+					}
+				} else {
+					// m33 is the largest diagonal term so base result on this
+					if (zz < epsilon) {
+						x = 0.707106781;
+						y = 0.707106781;
+						z = 0;
+					} else {
+						z = Math.sqrt(zz);
+						x = xz / z;
+						y = yz / z;
+					}
+				}
+
+				this.set(x, y, z, angle);
+				return this; // return 180 deg rotation
+			} // as we have reached here there are no singularities so we can handle normally
+
+
+			var s = Math.sqrt((m32 - m23) * (m32 - m23) + (m13 - m31) * (m13 - m31) + (m21 - m12) * (m21 - m12)); // used to normalize
+
+			if (Math.abs(s) < 0.001) s = 1; // prevent divide by zero, should not happen if matrix is orthogonal and should be
+			// caught by singularity test above, but I've left it in just in case
+
+			this.x = (m32 - m23) / s;
+			this.y = (m13 - m31) / s;
+			this.z = (m21 - m12) / s;
+			this.w = Math.acos((m11 + m22 + m33 - 1) / 2);
+			return this;
+		};
+
+		_proto.min = function min(v) {
+			this.x = Math.min(this.x, v.x);
+			this.y = Math.min(this.y, v.y);
+			this.z = Math.min(this.z, v.z);
+			this.w = Math.min(this.w, v.w);
+			return this;
+		};
+
+		_proto.max = function max(v) {
+			this.x = Math.max(this.x, v.x);
+			this.y = Math.max(this.y, v.y);
+			this.z = Math.max(this.z, v.z);
+			this.w = Math.max(this.w, v.w);
+			return this;
+		};
+
+		_proto.clamp = function clamp(min, max) {
+			// assumes min < max, componentwise
+			this.x = Math.max(min.x, Math.min(max.x, this.x));
+			this.y = Math.max(min.y, Math.min(max.y, this.y));
+			this.z = Math.max(min.z, Math.min(max.z, this.z));
+			this.w = Math.max(min.w, Math.min(max.w, this.w));
+			return this;
+		};
+
+		_proto.clampScalar = function clampScalar(minVal, maxVal) {
+			this.x = Math.max(minVal, Math.min(maxVal, this.x));
+			this.y = Math.max(minVal, Math.min(maxVal, this.y));
+			this.z = Math.max(minVal, Math.min(maxVal, this.z));
+			this.w = Math.max(minVal, Math.min(maxVal, this.w));
+			return this;
+		};
+
+		_proto.clampLength = function clampLength(min, max) {
+			var length = this.length();
+			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
+		};
+
+		_proto.floor = function floor() {
+			this.x = Math.floor(this.x);
+			this.y = Math.floor(this.y);
+			this.z = Math.floor(this.z);
+			this.w = Math.floor(this.w);
+			return this;
+		};
+
+		_proto.ceil = function ceil() {
+			this.x = Math.ceil(this.x);
+			this.y = Math.ceil(this.y);
+			this.z = Math.ceil(this.z);
+			this.w = Math.ceil(this.w);
+			return this;
+		};
+
+		_proto.round = function round() {
+			this.x = Math.round(this.x);
+			this.y = Math.round(this.y);
+			this.z = Math.round(this.z);
+			this.w = Math.round(this.w);
+			return this;
+		};
+
+		_proto.roundToZero = function roundToZero() {
+			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
+			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
+			this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);
+			this.w = this.w < 0 ? Math.ceil(this.w) : Math.floor(this.w);
+			return this;
+		};
+
+		_proto.negate = function negate() {
+			this.x = -this.x;
+			this.y = -this.y;
+			this.z = -this.z;
+			this.w = -this.w;
+			return this;
+		};
+
+		_proto.dot = function dot(v) {
+			return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
+		};
+
+		_proto.lengthSq = function lengthSq() {
+			return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
+		};
+
+		_proto.length = function length() {
+			return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w);
+		};
+
+		_proto.manhattanLength = function manhattanLength() {
+			return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z) + Math.abs(this.w);
+		};
+
+		_proto.normalize = function normalize() {
+			return this.divideScalar(this.length() || 1);
+		};
+
+		_proto.setLength = function setLength(length) {
+			return this.normalize().multiplyScalar(length);
+		};
+
+		_proto.lerp = function lerp(v, alpha) {
+			this.x += (v.x - this.x) * alpha;
+			this.y += (v.y - this.y) * alpha;
+			this.z += (v.z - this.z) * alpha;
+			this.w += (v.w - this.w) * alpha;
+			return this;
+		};
+
+		_proto.lerpVectors = function lerpVectors(v1, v2, alpha) {
+			this.x = v1.x + (v2.x - v1.x) * alpha;
+			this.y = v1.y + (v2.y - v1.y) * alpha;
+			this.z = v1.z + (v2.z - v1.z) * alpha;
+			this.w = v1.w + (v2.w - v1.w) * alpha;
+			return this;
+		};
+
+		_proto.equals = function equals(v) {
+			return v.x === this.x && v.y === this.y && v.z === this.z && v.w === this.w;
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			this.x = array[offset];
+			this.y = array[offset + 1];
+			this.z = array[offset + 2];
+			this.w = array[offset + 3];
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			array[offset] = this.x;
+			array[offset + 1] = this.y;
+			array[offset + 2] = this.z;
+			array[offset + 3] = this.w;
+			return array;
+		};
+
+		_proto.fromBufferAttribute = function fromBufferAttribute(attribute, index, offset) {
+			if (offset !== undefined) {
+				console.warn('THREE.Vector4: offset has been removed from .fromBufferAttribute().');
+			}
+
+			this.x = attribute.getX(index);
+			this.y = attribute.getY(index);
+			this.z = attribute.getZ(index);
+			this.w = attribute.getW(index);
+			return this;
+		};
+
+		_proto.random = function random() {
+			this.x = Math.random();
+			this.y = Math.random();
+			this.z = Math.random();
+			this.w = Math.random();
+			return this;
+		};
+
+		_createClass(Vector4, [{
+			key: "width",
+			get: function get() {
+				return this.z;
+			},
+			set: function set(value) {
+				this.z = value;
+			}
+		}, {
+			key: "height",
+			get: function get() {
+				return this.w;
+			},
+			set: function set(value) {
+				this.w = value;
+			}
+		}]);
+
+		return Vector4;
+	}();
+
+	Vector4.prototype.isVector4 = true;
+
+	/*
+	 In options, we can specify:
+	 * Texture parameters for an auto-generated target texture
+	 * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
+	*/
+
+	var WebGLRenderTarget = /*#__PURE__*/function (_EventDispatcher) {
+		_inheritsLoose(WebGLRenderTarget, _EventDispatcher);
+
+		function WebGLRenderTarget(width, height, options) {
+			var _this;
+
+			_this = _EventDispatcher.call(this) || this;
+			_this.width = width;
+			_this.height = height;
+			_this.depth = 1;
+			_this.scissor = new Vector4(0, 0, width, height);
+			_this.scissorTest = false;
+			_this.viewport = new Vector4(0, 0, width, height);
+			options = options || {};
+			_this.texture = new Texture(undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding);
+			_this.texture.image = {};
+			_this.texture.image.width = width;
+			_this.texture.image.height = height;
+			_this.texture.image.depth = 1;
+			_this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
+			_this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
+			_this.depthBuffer = options.depthBuffer !== undefined ? options.depthBuffer : true;
+			_this.stencilBuffer = options.stencilBuffer !== undefined ? options.stencilBuffer : false;
+			_this.depthTexture = options.depthTexture !== undefined ? options.depthTexture : null;
+			return _this;
+		}
+
+		var _proto = WebGLRenderTarget.prototype;
+
+		_proto.setTexture = function setTexture(texture) {
+			texture.image = {
+				width: this.width,
+				height: this.height,
+				depth: this.depth
+			};
+			this.texture = texture;
+		};
+
+		_proto.setSize = function setSize(width, height, depth) {
+			if (depth === void 0) {
+				depth = 1;
+			}
+
+			if (this.width !== width || this.height !== height || this.depth !== depth) {
+				this.width = width;
+				this.height = height;
+				this.depth = depth;
+				this.texture.image.width = width;
+				this.texture.image.height = height;
+				this.texture.image.depth = depth;
+				this.dispose();
+			}
+
+			this.viewport.set(0, 0, width, height);
+			this.scissor.set(0, 0, width, height);
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		_proto.copy = function copy(source) {
+			this.width = source.width;
+			this.height = source.height;
+			this.depth = source.depth;
+			this.viewport.copy(source.viewport);
+			this.texture = source.texture.clone();
+			this.depthBuffer = source.depthBuffer;
+			this.stencilBuffer = source.stencilBuffer;
+			this.depthTexture = source.depthTexture;
+			return this;
+		};
+
+		_proto.dispose = function dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		};
+
+		return WebGLRenderTarget;
+	}(EventDispatcher);
+
+	WebGLRenderTarget.prototype.isWebGLRenderTarget = true;
+
+	var WebGLMultisampleRenderTarget = /*#__PURE__*/function (_WebGLRenderTarget) {
+		_inheritsLoose(WebGLMultisampleRenderTarget, _WebGLRenderTarget);
+
+		function WebGLMultisampleRenderTarget(width, height, options) {
+			var _this;
+
+			_this = _WebGLRenderTarget.call(this, width, height, options) || this;
+			_this.samples = 4;
+			return _this;
+		}
+
+		var _proto = WebGLMultisampleRenderTarget.prototype;
+
+		_proto.copy = function copy(source) {
+			_WebGLRenderTarget.prototype.copy.call(this, source);
+
+			this.samples = source.samples;
+			return this;
+		};
+
+		return WebGLMultisampleRenderTarget;
+	}(WebGLRenderTarget);
+
+	WebGLMultisampleRenderTarget.prototype.isWebGLMultisampleRenderTarget = true;
+
+	var Quaternion = /*#__PURE__*/function () {
+		function Quaternion(x, y, z, w) {
+			if (x === void 0) {
+				x = 0;
+			}
+
+			if (y === void 0) {
+				y = 0;
+			}
+
+			if (z === void 0) {
+				z = 0;
+			}
+
+			if (w === void 0) {
+				w = 1;
+			}
+
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._w = w;
+		}
+
+		Quaternion.slerp = function slerp(qa, qb, qm, t) {
+			return qm.copy(qa).slerp(qb, t);
+		};
+
+		Quaternion.slerpFlat = function slerpFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t) {
+			// fuzz-free, array-based Quaternion SLERP operation
+			var x0 = src0[srcOffset0 + 0],
+					y0 = src0[srcOffset0 + 1],
+					z0 = src0[srcOffset0 + 2],
+					w0 = src0[srcOffset0 + 3];
+			var x1 = src1[srcOffset1 + 0],
+					y1 = src1[srcOffset1 + 1],
+					z1 = src1[srcOffset1 + 2],
+					w1 = src1[srcOffset1 + 3];
+
+			if (t === 0) {
+				dst[dstOffset + 0] = x0;
+				dst[dstOffset + 1] = y0;
+				dst[dstOffset + 2] = z0;
+				dst[dstOffset + 3] = w0;
+				return;
+			}
+
+			if (t === 1) {
+				dst[dstOffset + 0] = x1;
+				dst[dstOffset + 1] = y1;
+				dst[dstOffset + 2] = z1;
+				dst[dstOffset + 3] = w1;
+				return;
+			}
+
+			if (w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1) {
+				var s = 1 - t;
+				var cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
+						dir = cos >= 0 ? 1 : -1,
+						sqrSin = 1 - cos * cos; // Skip the Slerp for tiny steps to avoid numeric problems:
+
+				if (sqrSin > Number.EPSILON) {
+					var sin = Math.sqrt(sqrSin),
+							len = Math.atan2(sin, cos * dir);
+					s = Math.sin(s * len) / sin;
+					t = Math.sin(t * len) / sin;
+				}
+
+				var tDir = t * dir;
+				x0 = x0 * s + x1 * tDir;
+				y0 = y0 * s + y1 * tDir;
+				z0 = z0 * s + z1 * tDir;
+				w0 = w0 * s + w1 * tDir; // Normalize in case we just did a lerp:
+
+				if (s === 1 - t) {
+					var f = 1 / Math.sqrt(x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0);
+					x0 *= f;
+					y0 *= f;
+					z0 *= f;
+					w0 *= f;
+				}
+			}
+
+			dst[dstOffset] = x0;
+			dst[dstOffset + 1] = y0;
+			dst[dstOffset + 2] = z0;
+			dst[dstOffset + 3] = w0;
+		};
+
+		Quaternion.multiplyQuaternionsFlat = function multiplyQuaternionsFlat(dst, dstOffset, src0, srcOffset0, src1, srcOffset1) {
+			var x0 = src0[srcOffset0];
+			var y0 = src0[srcOffset0 + 1];
+			var z0 = src0[srcOffset0 + 2];
+			var w0 = src0[srcOffset0 + 3];
+			var x1 = src1[srcOffset1];
+			var y1 = src1[srcOffset1 + 1];
+			var z1 = src1[srcOffset1 + 2];
+			var w1 = src1[srcOffset1 + 3];
+			dst[dstOffset] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
+			dst[dstOffset + 1] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
+			dst[dstOffset + 2] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
+			dst[dstOffset + 3] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
+			return dst;
+		};
+
+		var _proto = Quaternion.prototype;
+
+		_proto.set = function set(x, y, z, w) {
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._w = w;
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor(this._x, this._y, this._z, this._w);
+		};
+
+		_proto.copy = function copy(quaternion) {
+			this._x = quaternion.x;
+			this._y = quaternion.y;
+			this._z = quaternion.z;
+			this._w = quaternion.w;
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.setFromEuler = function setFromEuler(euler, update) {
+			if (!(euler && euler.isEuler)) {
+				throw new Error('THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.');
+			}
+
+			var x = euler._x,
+					y = euler._y,
+					z = euler._z,
+					order = euler._order; // http://www.mathworks.com/matlabcentral/fileexchange/
+			// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
+			//	content/SpinCalc.m
+
+			var cos = Math.cos;
+			var sin = Math.sin;
+			var c1 = cos(x / 2);
+			var c2 = cos(y / 2);
+			var c3 = cos(z / 2);
+			var s1 = sin(x / 2);
+			var s2 = sin(y / 2);
+			var s3 = sin(z / 2);
+
+			switch (order) {
+				case 'XYZ':
+					this._x = s1 * c2 * c3 + c1 * s2 * s3;
+					this._y = c1 * s2 * c3 - s1 * c2 * s3;
+					this._z = c1 * c2 * s3 + s1 * s2 * c3;
+					this._w = c1 * c2 * c3 - s1 * s2 * s3;
+					break;
+
+				case 'YXZ':
+					this._x = s1 * c2 * c3 + c1 * s2 * s3;
+					this._y = c1 * s2 * c3 - s1 * c2 * s3;
+					this._z = c1 * c2 * s3 - s1 * s2 * c3;
+					this._w = c1 * c2 * c3 + s1 * s2 * s3;
+					break;
+
+				case 'ZXY':
+					this._x = s1 * c2 * c3 - c1 * s2 * s3;
+					this._y = c1 * s2 * c3 + s1 * c2 * s3;
+					this._z = c1 * c2 * s3 + s1 * s2 * c3;
+					this._w = c1 * c2 * c3 - s1 * s2 * s3;
+					break;
+
+				case 'ZYX':
+					this._x = s1 * c2 * c3 - c1 * s2 * s3;
+					this._y = c1 * s2 * c3 + s1 * c2 * s3;
+					this._z = c1 * c2 * s3 - s1 * s2 * c3;
+					this._w = c1 * c2 * c3 + s1 * s2 * s3;
+					break;
+
+				case 'YZX':
+					this._x = s1 * c2 * c3 + c1 * s2 * s3;
+					this._y = c1 * s2 * c3 + s1 * c2 * s3;
+					this._z = c1 * c2 * s3 - s1 * s2 * c3;
+					this._w = c1 * c2 * c3 - s1 * s2 * s3;
+					break;
+
+				case 'XZY':
+					this._x = s1 * c2 * c3 - c1 * s2 * s3;
+					this._y = c1 * s2 * c3 - s1 * c2 * s3;
+					this._z = c1 * c2 * s3 + s1 * s2 * c3;
+					this._w = c1 * c2 * c3 + s1 * s2 * s3;
+					break;
+
+				default:
+					console.warn('THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order);
+			}
+
+			if (update !== false) this._onChangeCallback();
+			return this;
+		};
+
+		_proto.setFromAxisAngle = function setFromAxisAngle(axis, angle) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm
+			// assumes axis is normalized
+			var halfAngle = angle / 2,
+					s = Math.sin(halfAngle);
+			this._x = axis.x * s;
+			this._y = axis.y * s;
+			this._z = axis.z * s;
+			this._w = Math.cos(halfAngle);
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.setFromRotationMatrix = function setFromRotationMatrix(m) {
+			// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			var te = m.elements,
+					m11 = te[0],
+					m12 = te[4],
+					m13 = te[8],
+					m21 = te[1],
+					m22 = te[5],
+					m23 = te[9],
+					m31 = te[2],
+					m32 = te[6],
+					m33 = te[10],
+					trace = m11 + m22 + m33;
+
+			if (trace > 0) {
+				var s = 0.5 / Math.sqrt(trace + 1.0);
+				this._w = 0.25 / s;
+				this._x = (m32 - m23) * s;
+				this._y = (m13 - m31) * s;
+				this._z = (m21 - m12) * s;
+			} else if (m11 > m22 && m11 > m33) {
+				var _s = 2.0 * Math.sqrt(1.0 + m11 - m22 - m33);
+
+				this._w = (m32 - m23) / _s;
+				this._x = 0.25 * _s;
+				this._y = (m12 + m21) / _s;
+				this._z = (m13 + m31) / _s;
+			} else if (m22 > m33) {
+				var _s2 = 2.0 * Math.sqrt(1.0 + m22 - m11 - m33);
+
+				this._w = (m13 - m31) / _s2;
+				this._x = (m12 + m21) / _s2;
+				this._y = 0.25 * _s2;
+				this._z = (m23 + m32) / _s2;
+			} else {
+				var _s3 = 2.0 * Math.sqrt(1.0 + m33 - m11 - m22);
+
+				this._w = (m21 - m12) / _s3;
+				this._x = (m13 + m31) / _s3;
+				this._y = (m23 + m32) / _s3;
+				this._z = 0.25 * _s3;
+			}
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.setFromUnitVectors = function setFromUnitVectors(vFrom, vTo) {
+			// assumes direction vectors vFrom and vTo are normalized
+			var EPS = 0.000001;
+			var r = vFrom.dot(vTo) + 1;
+
+			if (r < EPS) {
+				r = 0;
+
+				if (Math.abs(vFrom.x) > Math.abs(vFrom.z)) {
+					this._x = -vFrom.y;
+					this._y = vFrom.x;
+					this._z = 0;
+					this._w = r;
+				} else {
+					this._x = 0;
+					this._y = -vFrom.z;
+					this._z = vFrom.y;
+					this._w = r;
+				}
+			} else {
+				// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3
+				this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
+				this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
+				this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
+				this._w = r;
+			}
+
+			return this.normalize();
+		};
+
+		_proto.angleTo = function angleTo(q) {
+			return 2 * Math.acos(Math.abs(MathUtils.clamp(this.dot(q), -1, 1)));
+		};
+
+		_proto.rotateTowards = function rotateTowards(q, step) {
+			var angle = this.angleTo(q);
+			if (angle === 0) return this;
+			var t = Math.min(1, step / angle);
+			this.slerp(q, t);
+			return this;
+		};
+
+		_proto.identity = function identity() {
+			return this.set(0, 0, 0, 1);
+		};
+
+		_proto.invert = function invert() {
+			// quaternion is assumed to have unit length
+			return this.conjugate();
+		};
+
+		_proto.conjugate = function conjugate() {
+			this._x *= -1;
+			this._y *= -1;
+			this._z *= -1;
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.dot = function dot(v) {
+			return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
+		};
+
+		_proto.lengthSq = function lengthSq() {
+			return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
+		};
+
+		_proto.length = function length() {
+			return Math.sqrt(this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w);
+		};
+
+		_proto.normalize = function normalize() {
+			var l = this.length();
+
+			if (l === 0) {
+				this._x = 0;
+				this._y = 0;
+				this._z = 0;
+				this._w = 1;
+			} else {
+				l = 1 / l;
+				this._x = this._x * l;
+				this._y = this._y * l;
+				this._z = this._z * l;
+				this._w = this._w * l;
+			}
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.multiply = function multiply(q, p) {
+			if (p !== undefined) {
+				console.warn('THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead.');
+				return this.multiplyQuaternions(q, p);
+			}
+
+			return this.multiplyQuaternions(this, q);
+		};
+
+		_proto.premultiply = function premultiply(q) {
+			return this.multiplyQuaternions(q, this);
+		};
+
+		_proto.multiplyQuaternions = function multiplyQuaternions(a, b) {
+			// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm
+			var qax = a._x,
+					qay = a._y,
+					qaz = a._z,
+					qaw = a._w;
+			var qbx = b._x,
+					qby = b._y,
+					qbz = b._z,
+					qbw = b._w;
+			this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
+			this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
+			this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
+			this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.slerp = function slerp(qb, t) {
+			if (t === 0) return this;
+			if (t === 1) return this.copy(qb);
+			var x = this._x,
+					y = this._y,
+					z = this._z,
+					w = this._w; // http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/
+
+			var cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
+
+			if (cosHalfTheta < 0) {
+				this._w = -qb._w;
+				this._x = -qb._x;
+				this._y = -qb._y;
+				this._z = -qb._z;
+				cosHalfTheta = -cosHalfTheta;
+			} else {
+				this.copy(qb);
+			}
+
+			if (cosHalfTheta >= 1.0) {
+				this._w = w;
+				this._x = x;
+				this._y = y;
+				this._z = z;
+				return this;
+			}
+
+			var sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;
+
+			if (sqrSinHalfTheta <= Number.EPSILON) {
+				var s = 1 - t;
+				this._w = s * w + t * this._w;
+				this._x = s * x + t * this._x;
+				this._y = s * y + t * this._y;
+				this._z = s * z + t * this._z;
+				this.normalize();
+
+				this._onChangeCallback();
+
+				return this;
+			}
+
+			var sinHalfTheta = Math.sqrt(sqrSinHalfTheta);
+			var halfTheta = Math.atan2(sinHalfTheta, cosHalfTheta);
+			var ratioA = Math.sin((1 - t) * halfTheta) / sinHalfTheta,
+					ratioB = Math.sin(t * halfTheta) / sinHalfTheta;
+			this._w = w * ratioA + this._w * ratioB;
+			this._x = x * ratioA + this._x * ratioB;
+			this._y = y * ratioA + this._y * ratioB;
+			this._z = z * ratioA + this._z * ratioB;
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.equals = function equals(quaternion) {
+			return quaternion._x === this._x && quaternion._y === this._y && quaternion._z === this._z && quaternion._w === this._w;
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			this._x = array[offset];
+			this._y = array[offset + 1];
+			this._z = array[offset + 2];
+			this._w = array[offset + 3];
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			array[offset] = this._x;
+			array[offset + 1] = this._y;
+			array[offset + 2] = this._z;
+			array[offset + 3] = this._w;
+			return array;
+		};
+
+		_proto.fromBufferAttribute = function fromBufferAttribute(attribute, index) {
+			this._x = attribute.getX(index);
+			this._y = attribute.getY(index);
+			this._z = attribute.getZ(index);
+			this._w = attribute.getW(index);
+			return this;
+		};
+
+		_proto._onChange = function _onChange(callback) {
+			this._onChangeCallback = callback;
+			return this;
+		};
+
+		_proto._onChangeCallback = function _onChangeCallback() {};
+
+		_createClass(Quaternion, [{
+			key: "x",
+			get: function get() {
+				return this._x;
+			},
+			set: function set(value) {
+				this._x = value;
+
+				this._onChangeCallback();
+			}
+		}, {
+			key: "y",
+			get: function get() {
+				return this._y;
+			},
+			set: function set(value) {
+				this._y = value;
+
+				this._onChangeCallback();
+			}
+		}, {
+			key: "z",
+			get: function get() {
+				return this._z;
+			},
+			set: function set(value) {
+				this._z = value;
+
+				this._onChangeCallback();
+			}
+		}, {
+			key: "w",
+			get: function get() {
+				return this._w;
+			},
+			set: function set(value) {
+				this._w = value;
+
+				this._onChangeCallback();
+			}
+		}]);
+
+		return Quaternion;
+	}();
+
+	Quaternion.prototype.isQuaternion = true;
+
+	var Vector3 = /*#__PURE__*/function () {
+		function Vector3(x, y, z) {
+			if (x === void 0) {
+				x = 0;
+			}
+
+			if (y === void 0) {
+				y = 0;
+			}
+
+			if (z === void 0) {
+				z = 0;
+			}
+
+			this.x = x;
+			this.y = y;
+			this.z = z;
+		}
+
+		var _proto = Vector3.prototype;
+
+		_proto.set = function set(x, y, z) {
+			if (z === undefined) z = this.z; // sprite.scale.set(x,y)
+
+			this.x = x;
+			this.y = y;
+			this.z = z;
+			return this;
+		};
+
+		_proto.setScalar = function setScalar(scalar) {
+			this.x = scalar;
+			this.y = scalar;
+			this.z = scalar;
+			return this;
+		};
+
+		_proto.setX = function setX(x) {
+			this.x = x;
+			return this;
+		};
+
+		_proto.setY = function setY(y) {
+			this.y = y;
+			return this;
+		};
+
+		_proto.setZ = function setZ(z) {
+			this.z = z;
+			return this;
+		};
+
+		_proto.setComponent = function setComponent(index, value) {
+			switch (index) {
+				case 0:
+					this.x = value;
+					break;
+
+				case 1:
+					this.y = value;
+					break;
+
+				case 2:
+					this.z = value;
+					break;
+
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+
+			return this;
+		};
+
+		_proto.getComponent = function getComponent(index) {
+			switch (index) {
+				case 0:
+					return this.x;
+
+				case 1:
+					return this.y;
+
+				case 2:
+					return this.z;
+
+				default:
+					throw new Error('index is out of range: ' + index);
+			}
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor(this.x, this.y, this.z);
+		};
+
+		_proto.copy = function copy(v) {
+			this.x = v.x;
+			this.y = v.y;
+			this.z = v.z;
+			return this;
+		};
+
+		_proto.add = function add(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead.');
+				return this.addVectors(v, w);
+			}
+
+			this.x += v.x;
+			this.y += v.y;
+			this.z += v.z;
+			return this;
+		};
+
+		_proto.addScalar = function addScalar(s) {
+			this.x += s;
+			this.y += s;
+			this.z += s;
+			return this;
+		};
+
+		_proto.addVectors = function addVectors(a, b) {
+			this.x = a.x + b.x;
+			this.y = a.y + b.y;
+			this.z = a.z + b.z;
+			return this;
+		};
+
+		_proto.addScaledVector = function addScaledVector(v, s) {
+			this.x += v.x * s;
+			this.y += v.y * s;
+			this.z += v.z * s;
+			return this;
+		};
+
+		_proto.sub = function sub(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.');
+				return this.subVectors(v, w);
+			}
+
+			this.x -= v.x;
+			this.y -= v.y;
+			this.z -= v.z;
+			return this;
+		};
+
+		_proto.subScalar = function subScalar(s) {
+			this.x -= s;
+			this.y -= s;
+			this.z -= s;
+			return this;
+		};
+
+		_proto.subVectors = function subVectors(a, b) {
+			this.x = a.x - b.x;
+			this.y = a.y - b.y;
+			this.z = a.z - b.z;
+			return this;
+		};
+
+		_proto.multiply = function multiply(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead.');
+				return this.multiplyVectors(v, w);
+			}
+
+			this.x *= v.x;
+			this.y *= v.y;
+			this.z *= v.z;
+			return this;
+		};
+
+		_proto.multiplyScalar = function multiplyScalar(scalar) {
+			this.x *= scalar;
+			this.y *= scalar;
+			this.z *= scalar;
+			return this;
+		};
+
+		_proto.multiplyVectors = function multiplyVectors(a, b) {
+			this.x = a.x * b.x;
+			this.y = a.y * b.y;
+			this.z = a.z * b.z;
+			return this;
+		};
+
+		_proto.applyEuler = function applyEuler(euler) {
+			if (!(euler && euler.isEuler)) {
+				console.error('THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order.');
+			}
+
+			return this.applyQuaternion(_quaternion.setFromEuler(euler));
+		};
+
+		_proto.applyAxisAngle = function applyAxisAngle(axis, angle) {
+			return this.applyQuaternion(_quaternion.setFromAxisAngle(axis, angle));
+		};
+
+		_proto.applyMatrix3 = function applyMatrix3(m) {
+			var x = this.x,
+					y = this.y,
+					z = this.z;
+			var e = m.elements;
+			this.x = e[0] * x + e[3] * y + e[6] * z;
+			this.y = e[1] * x + e[4] * y + e[7] * z;
+			this.z = e[2] * x + e[5] * y + e[8] * z;
+			return this;
+		};
+
+		_proto.applyNormalMatrix = function applyNormalMatrix(m) {
+			return this.applyMatrix3(m).normalize();
+		};
+
+		_proto.applyMatrix4 = function applyMatrix4(m) {
+			var x = this.x,
+					y = this.y,
+					z = this.z;
+			var e = m.elements;
+			var w = 1 / (e[3] * x + e[7] * y + e[11] * z + e[15]);
+			this.x = (e[0] * x + e[4] * y + e[8] * z + e[12]) * w;
+			this.y = (e[1] * x + e[5] * y + e[9] * z + e[13]) * w;
+			this.z = (e[2] * x + e[6] * y + e[10] * z + e[14]) * w;
+			return this;
+		};
+
+		_proto.applyQuaternion = function applyQuaternion(q) {
+			var x = this.x,
+					y = this.y,
+					z = this.z;
+			var qx = q.x,
+					qy = q.y,
+					qz = q.z,
+					qw = q.w; // calculate quat * vector
+
+			var ix = qw * x + qy * z - qz * y;
+			var iy = qw * y + qz * x - qx * z;
+			var iz = qw * z + qx * y - qy * x;
+			var iw = -qx * x - qy * y - qz * z; // calculate result * inverse quat
+
+			this.x = ix * qw + iw * -qx + iy * -qz - iz * -qy;
+			this.y = iy * qw + iw * -qy + iz * -qx - ix * -qz;
+			this.z = iz * qw + iw * -qz + ix * -qy - iy * -qx;
+			return this;
+		};
+
+		_proto.project = function project(camera) {
+			return this.applyMatrix4(camera.matrixWorldInverse).applyMatrix4(camera.projectionMatrix);
+		};
+
+		_proto.unproject = function unproject(camera) {
+			return this.applyMatrix4(camera.projectionMatrixInverse).applyMatrix4(camera.matrixWorld);
+		};
+
+		_proto.transformDirection = function transformDirection(m) {
+			// input: THREE.Matrix4 affine matrix
+			// vector interpreted as a direction
+			var x = this.x,
+					y = this.y,
+					z = this.z;
+			var e = m.elements;
+			this.x = e[0] * x + e[4] * y + e[8] * z;
+			this.y = e[1] * x + e[5] * y + e[9] * z;
+			this.z = e[2] * x + e[6] * y + e[10] * z;
+			return this.normalize();
+		};
+
+		_proto.divide = function divide(v) {
+			this.x /= v.x;
+			this.y /= v.y;
+			this.z /= v.z;
+			return this;
+		};
+
+		_proto.divideScalar = function divideScalar(scalar) {
+			return this.multiplyScalar(1 / scalar);
+		};
+
+		_proto.min = function min(v) {
+			this.x = Math.min(this.x, v.x);
+			this.y = Math.min(this.y, v.y);
+			this.z = Math.min(this.z, v.z);
+			return this;
+		};
+
+		_proto.max = function max(v) {
+			this.x = Math.max(this.x, v.x);
+			this.y = Math.max(this.y, v.y);
+			this.z = Math.max(this.z, v.z);
+			return this;
+		};
+
+		_proto.clamp = function clamp(min, max) {
+			// assumes min < max, componentwise
+			this.x = Math.max(min.x, Math.min(max.x, this.x));
+			this.y = Math.max(min.y, Math.min(max.y, this.y));
+			this.z = Math.max(min.z, Math.min(max.z, this.z));
+			return this;
+		};
+
+		_proto.clampScalar = function clampScalar(minVal, maxVal) {
+			this.x = Math.max(minVal, Math.min(maxVal, this.x));
+			this.y = Math.max(minVal, Math.min(maxVal, this.y));
+			this.z = Math.max(minVal, Math.min(maxVal, this.z));
+			return this;
+		};
+
+		_proto.clampLength = function clampLength(min, max) {
+			var length = this.length();
+			return this.divideScalar(length || 1).multiplyScalar(Math.max(min, Math.min(max, length)));
+		};
+
+		_proto.floor = function floor() {
+			this.x = Math.floor(this.x);
+			this.y = Math.floor(this.y);
+			this.z = Math.floor(this.z);
+			return this;
+		};
+
+		_proto.ceil = function ceil() {
+			this.x = Math.ceil(this.x);
+			this.y = Math.ceil(this.y);
+			this.z = Math.ceil(this.z);
+			return this;
+		};
+
+		_proto.round = function round() {
+			this.x = Math.round(this.x);
+			this.y = Math.round(this.y);
+			this.z = Math.round(this.z);
+			return this;
+		};
+
+		_proto.roundToZero = function roundToZero() {
+			this.x = this.x < 0 ? Math.ceil(this.x) : Math.floor(this.x);
+			this.y = this.y < 0 ? Math.ceil(this.y) : Math.floor(this.y);
+			this.z = this.z < 0 ? Math.ceil(this.z) : Math.floor(this.z);
+			return this;
+		};
+
+		_proto.negate = function negate() {
+			this.x = -this.x;
+			this.y = -this.y;
+			this.z = -this.z;
+			return this;
+		};
+
+		_proto.dot = function dot(v) {
+			return this.x * v.x + this.y * v.y + this.z * v.z;
+		} // TODO lengthSquared?
+		;
+
+		_proto.lengthSq = function lengthSq() {
+			return this.x * this.x + this.y * this.y + this.z * this.z;
+		};
+
+		_proto.length = function length() {
+			return Math.sqrt(this.x * this.x + this.y * this.y + this.z * this.z);
+		};
+
+		_proto.manhattanLength = function manhattanLength() {
+			return Math.abs(this.x) + Math.abs(this.y) + Math.abs(this.z);
+		};
+
+		_proto.normalize = function normalize() {
+			return this.divideScalar(this.length() || 1);
+		};
+
+		_proto.setLength = function setLength(length) {
+			return this.normalize().multiplyScalar(length);
+		};
+
+		_proto.lerp = function lerp(v, alpha) {
+			this.x += (v.x - this.x) * alpha;
+			this.y += (v.y - this.y) * alpha;
+			this.z += (v.z - this.z) * alpha;
+			return this;
+		};
+
+		_proto.lerpVectors = function lerpVectors(v1, v2, alpha) {
+			this.x = v1.x + (v2.x - v1.x) * alpha;
+			this.y = v1.y + (v2.y - v1.y) * alpha;
+			this.z = v1.z + (v2.z - v1.z) * alpha;
+			return this;
+		};
+
+		_proto.cross = function cross(v, w) {
+			if (w !== undefined) {
+				console.warn('THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead.');
+				return this.crossVectors(v, w);
+			}
+
+			return this.crossVectors(this, v);
+		};
+
+		_proto.crossVectors = function crossVectors(a, b) {
+			var ax = a.x,
+					ay = a.y,
+					az = a.z;
+			var bx = b.x,
+					by = b.y,
+					bz = b.z;
+			this.x = ay * bz - az * by;
+			this.y = az * bx - ax * bz;
+			this.z = ax * by - ay * bx;
+			return this;
+		};
+
+		_proto.projectOnVector = function projectOnVector(v) {
+			var denominator = v.lengthSq();
+			if (denominator === 0) return this.set(0, 0, 0);
+			var scalar = v.dot(this) / denominator;
+			return this.copy(v).multiplyScalar(scalar);
+		};
+
+		_proto.projectOnPlane = function projectOnPlane(planeNormal) {
+			_vector.copy(this).projectOnVector(planeNormal);
+
+			return this.sub(_vector);
+		};
+
+		_proto.reflect = function reflect(normal) {
+			// reflect incident vector off plane orthogonal to normal
+			// normal is assumed to have unit length
+			return this.sub(_vector.copy(normal).multiplyScalar(2 * this.dot(normal)));
+		};
+
+		_proto.angleTo = function angleTo(v) {
+			var denominator = Math.sqrt(this.lengthSq() * v.lengthSq());
+			if (denominator === 0) return Math.PI / 2;
+			var theta = this.dot(v) / denominator; // clamp, to handle numerical problems
+
+			return Math.acos(MathUtils.clamp(theta, -1, 1));
+		};
+
+		_proto.distanceTo = function distanceTo(v) {
+			return Math.sqrt(this.distanceToSquared(v));
+		};
+
+		_proto.distanceToSquared = function distanceToSquared(v) {
+			var dx = this.x - v.x,
+					dy = this.y - v.y,
+					dz = this.z - v.z;
+			return dx * dx + dy * dy + dz * dz;
+		};
+
+		_proto.manhattanDistanceTo = function manhattanDistanceTo(v) {
+			return Math.abs(this.x - v.x) + Math.abs(this.y - v.y) + Math.abs(this.z - v.z);
+		};
+
+		_proto.setFromSpherical = function setFromSpherical(s) {
+			return this.setFromSphericalCoords(s.radius, s.phi, s.theta);
+		};
+
+		_proto.setFromSphericalCoords = function setFromSphericalCoords(radius, phi, theta) {
+			var sinPhiRadius = Math.sin(phi) * radius;
+			this.x = sinPhiRadius * Math.sin(theta);
+			this.y = Math.cos(phi) * radius;
+			this.z = sinPhiRadius * Math.cos(theta);
+			return this;
+		};
+
+		_proto.setFromCylindrical = function setFromCylindrical(c) {
+			return this.setFromCylindricalCoords(c.radius, c.theta, c.y);
+		};
+
+		_proto.setFromCylindricalCoords = function setFromCylindricalCoords(radius, theta, y) {
+			this.x = radius * Math.sin(theta);
+			this.y = y;
+			this.z = radius * Math.cos(theta);
+			return this;
+		};
+
+		_proto.setFromMatrixPosition = function setFromMatrixPosition(m) {
+			var e = m.elements;
+			this.x = e[12];
+			this.y = e[13];
+			this.z = e[14];
+			return this;
+		};
+
+		_proto.setFromMatrixScale = function setFromMatrixScale(m) {
+			var sx = this.setFromMatrixColumn(m, 0).length();
+			var sy = this.setFromMatrixColumn(m, 1).length();
+			var sz = this.setFromMatrixColumn(m, 2).length();
+			this.x = sx;
+			this.y = sy;
+			this.z = sz;
+			return this;
+		};
+
+		_proto.setFromMatrixColumn = function setFromMatrixColumn(m, index) {
+			return this.fromArray(m.elements, index * 4);
+		};
+
+		_proto.setFromMatrix3Column = function setFromMatrix3Column(m, index) {
+			return this.fromArray(m.elements, index * 3);
+		};
+
+		_proto.equals = function equals(v) {
+			return v.x === this.x && v.y === this.y && v.z === this.z;
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			this.x = array[offset];
+			this.y = array[offset + 1];
+			this.z = array[offset + 2];
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			array[offset] = this.x;
+			array[offset + 1] = this.y;
+			array[offset + 2] = this.z;
+			return array;
+		};
+
+		_proto.fromBufferAttribute = function fromBufferAttribute(attribute, index, offset) {
+			if (offset !== undefined) {
+				console.warn('THREE.Vector3: offset has been removed from .fromBufferAttribute().');
+			}
+
+			this.x = attribute.getX(index);
+			this.y = attribute.getY(index);
+			this.z = attribute.getZ(index);
+			return this;
+		};
+
+		_proto.random = function random() {
+			this.x = Math.random();
+			this.y = Math.random();
+			this.z = Math.random();
+			return this;
+		};
+
+		return Vector3;
+	}();
+
+	Vector3.prototype.isVector3 = true;
+
+	var _vector = /*@__PURE__*/new Vector3();
+
+	var _quaternion = /*@__PURE__*/new Quaternion();
+
+	var Box3 = /*#__PURE__*/function () {
+		function Box3(min, max) {
+			if (min === void 0) {
+				min = new Vector3(+Infinity, +Infinity, +Infinity);
+			}
+
+			if (max === void 0) {
+				max = new Vector3(-Infinity, -Infinity, -Infinity);
+			}
+
+			this.min = min;
+			this.max = max;
+		}
+
+		var _proto = Box3.prototype;
+
+		_proto.set = function set(min, max) {
+			this.min.copy(min);
+			this.max.copy(max);
+			return this;
+		};
+
+		_proto.setFromArray = function setFromArray(array) {
+			var minX = +Infinity;
+			var minY = +Infinity;
+			var minZ = +Infinity;
+			var maxX = -Infinity;
+			var maxY = -Infinity;
+			var maxZ = -Infinity;
+
+			for (var i = 0, l = array.length; i < l; i += 3) {
+				var x = array[i];
+				var y = array[i + 1];
+				var z = array[i + 2];
+				if (x < minX) minX = x;
+				if (y < minY) minY = y;
+				if (z < minZ) minZ = z;
+				if (x > maxX) maxX = x;
+				if (y > maxY) maxY = y;
+				if (z > maxZ) maxZ = z;
+			}
+
+			this.min.set(minX, minY, minZ);
+			this.max.set(maxX, maxY, maxZ);
+			return this;
+		};
+
+		_proto.setFromBufferAttribute = function setFromBufferAttribute(attribute) {
+			var minX = +Infinity;
+			var minY = +Infinity;
+			var minZ = +Infinity;
+			var maxX = -Infinity;
+			var maxY = -Infinity;
+			var maxZ = -Infinity;
+
+			for (var i = 0, l = attribute.count; i < l; i++) {
+				var x = attribute.getX(i);
+				var y = attribute.getY(i);
+				var z = attribute.getZ(i);
+				if (x < minX) minX = x;
+				if (y < minY) minY = y;
+				if (z < minZ) minZ = z;
+				if (x > maxX) maxX = x;
+				if (y > maxY) maxY = y;
+				if (z > maxZ) maxZ = z;
+			}
+
+			this.min.set(minX, minY, minZ);
+			this.max.set(maxX, maxY, maxZ);
+			return this;
+		};
+
+		_proto.setFromPoints = function setFromPoints(points) {
+			this.makeEmpty();
+
+			for (var i = 0, il = points.length; i < il; i++) {
+				this.expandByPoint(points[i]);
+			}
+
+			return this;
+		};
+
+		_proto.setFromCenterAndSize = function setFromCenterAndSize(center, size) {
+			var halfSize = _vector$1.copy(size).multiplyScalar(0.5);
+
+			this.min.copy(center).sub(halfSize);
+			this.max.copy(center).add(halfSize);
+			return this;
+		};
+
+		_proto.setFromObject = function setFromObject(object) {
+			this.makeEmpty();
+			return this.expandByObject(object);
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		_proto.copy = function copy(box) {
+			this.min.copy(box.min);
+			this.max.copy(box.max);
+			return this;
+		};
+
+		_proto.makeEmpty = function makeEmpty() {
+			this.min.x = this.min.y = this.min.z = +Infinity;
+			this.max.x = this.max.y = this.max.z = -Infinity;
+			return this;
+		};
+
+		_proto.isEmpty = function isEmpty() {
+			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
+			return this.max.x < this.min.x || this.max.y < this.min.y || this.max.z < this.min.z;
+		};
+
+		_proto.getCenter = function getCenter(target) {
+			if (target === undefined) {
+				console.warn('THREE.Box3: .getCenter() target is now required');
+				target = new Vector3();
+			}
+
+			return this.isEmpty() ? target.set(0, 0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
+		};
+
+		_proto.getSize = function getSize(target) {
+			if (target === undefined) {
+				console.warn('THREE.Box3: .getSize() target is now required');
+				target = new Vector3();
+			}
+
+			return this.isEmpty() ? target.set(0, 0, 0) : target.subVectors(this.max, this.min);
+		};
+
+		_proto.expandByPoint = function expandByPoint(point) {
+			this.min.min(point);
+			this.max.max(point);
+			return this;
+		};
+
+		_proto.expandByVector = function expandByVector(vector) {
+			this.min.sub(vector);
+			this.max.add(vector);
+			return this;
+		};
+
+		_proto.expandByScalar = function expandByScalar(scalar) {
+			this.min.addScalar(-scalar);
+			this.max.addScalar(scalar);
+			return this;
+		};
+
+		_proto.expandByObject = function expandByObject(object) {
+			// Computes the world-axis-aligned bounding box of an object (including its children),
+			// accounting for both the object's, and children's, world transforms
+			object.updateWorldMatrix(false, false);
+			var geometry = object.geometry;
+
+			if (geometry !== undefined) {
+				if (geometry.boundingBox === null) {
+					geometry.computeBoundingBox();
+				}
+
+				_box.copy(geometry.boundingBox);
+
+				_box.applyMatrix4(object.matrixWorld);
+
+				this.union(_box);
+			}
+
+			var children = object.children;
+
+			for (var i = 0, l = children.length; i < l; i++) {
+				this.expandByObject(children[i]);
+			}
+
+			return this;
+		};
+
+		_proto.containsPoint = function containsPoint(point) {
+			return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y || point.z < this.min.z || point.z > this.max.z ? false : true;
+		};
+
+		_proto.containsBox = function containsBox(box) {
+			return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y && this.min.z <= box.min.z && box.max.z <= this.max.z;
+		};
+
+		_proto.getParameter = function getParameter(point, target) {
+			// This can potentially have a divide by zero if the box
+			// has a size dimension of 0.
+			if (target === undefined) {
+				console.warn('THREE.Box3: .getParameter() target is now required');
+				target = new Vector3();
+			}
+
+			return target.set((point.x - this.min.x) / (this.max.x - this.min.x), (point.y - this.min.y) / (this.max.y - this.min.y), (point.z - this.min.z) / (this.max.z - this.min.z));
+		};
+
+		_proto.intersectsBox = function intersectsBox(box) {
+			// using 6 splitting planes to rule out intersections.
+			return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y || box.max.z < this.min.z || box.min.z > this.max.z ? false : true;
+		};
+
+		_proto.intersectsSphere = function intersectsSphere(sphere) {
+			// Find the point on the AABB closest to the sphere center.
+			this.clampPoint(sphere.center, _vector$1); // If that point is inside the sphere, the AABB and sphere intersect.
+
+			return _vector$1.distanceToSquared(sphere.center) <= sphere.radius * sphere.radius;
+		};
+
+		_proto.intersectsPlane = function intersectsPlane(plane) {
+			// We compute the minimum and maximum dot product values. If those values
+			// are on the same side (back or front) of the plane, then there is no intersection.
+			var min, max;
+
+			if (plane.normal.x > 0) {
+				min = plane.normal.x * this.min.x;
+				max = plane.normal.x * this.max.x;
+			} else {
+				min = plane.normal.x * this.max.x;
+				max = plane.normal.x * this.min.x;
+			}
+
+			if (plane.normal.y > 0) {
+				min += plane.normal.y * this.min.y;
+				max += plane.normal.y * this.max.y;
+			} else {
+				min += plane.normal.y * this.max.y;
+				max += plane.normal.y * this.min.y;
+			}
+
+			if (plane.normal.z > 0) {
+				min += plane.normal.z * this.min.z;
+				max += plane.normal.z * this.max.z;
+			} else {
+				min += plane.normal.z * this.max.z;
+				max += plane.normal.z * this.min.z;
+			}
+
+			return min <= -plane.constant && max >= -plane.constant;
+		};
+
+		_proto.intersectsTriangle = function intersectsTriangle(triangle) {
+			if (this.isEmpty()) {
+				return false;
+			} // compute box center and extents
+
+
+			this.getCenter(_center);
+
+			_extents.subVectors(this.max, _center); // translate triangle to aabb origin
+
+
+			_v0.subVectors(triangle.a, _center);
+
+			_v1.subVectors(triangle.b, _center);
+
+			_v2.subVectors(triangle.c, _center); // compute edge vectors for triangle
+
+
+			_f0.subVectors(_v1, _v0);
+
+			_f1.subVectors(_v2, _v1);
+
+			_f2.subVectors(_v0, _v2); // test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
+			// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
+			// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
+
+
+			var axes = [0, -_f0.z, _f0.y, 0, -_f1.z, _f1.y, 0, -_f2.z, _f2.y, _f0.z, 0, -_f0.x, _f1.z, 0, -_f1.x, _f2.z, 0, -_f2.x, -_f0.y, _f0.x, 0, -_f1.y, _f1.x, 0, -_f2.y, _f2.x, 0];
+
+			if (!satForAxes(axes, _v0, _v1, _v2, _extents)) {
+				return false;
+			} // test 3 face normals from the aabb
+
+
+			axes = [1, 0, 0, 0, 1, 0, 0, 0, 1];
+
+			if (!satForAxes(axes, _v0, _v1, _v2, _extents)) {
+				return false;
+			} // finally testing the face normal of the triangle
+			// use already existing triangle edge vectors here
+
+
+			_triangleNormal.crossVectors(_f0, _f1);
+
+			axes = [_triangleNormal.x, _triangleNormal.y, _triangleNormal.z];
+			return satForAxes(axes, _v0, _v1, _v2, _extents);
+		};
+
+		_proto.clampPoint = function clampPoint(point, target) {
+			if (target === undefined) {
+				console.warn('THREE.Box3: .clampPoint() target is now required');
+				target = new Vector3();
+			}
+
+			return target.copy(point).clamp(this.min, this.max);
+		};
+
+		_proto.distanceToPoint = function distanceToPoint(point) {
+			var clampedPoint = _vector$1.copy(point).clamp(this.min, this.max);
+
+			return clampedPoint.sub(point).length();
+		};
+
+		_proto.getBoundingSphere = function getBoundingSphere(target) {
+			if (target === undefined) {
+				console.error('THREE.Box3: .getBoundingSphere() target is now required'); //target = new Sphere(); // removed to avoid cyclic dependency
+			}
+
+			this.getCenter(target.center);
+			target.radius = this.getSize(_vector$1).length() * 0.5;
+			return target;
+		};
+
+		_proto.intersect = function intersect(box) {
+			this.min.max(box.min);
+			this.max.min(box.max); // ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
+
+			if (this.isEmpty()) this.makeEmpty();
+			return this;
+		};
+
+		_proto.union = function union(box) {
+			this.min.min(box.min);
+			this.max.max(box.max);
+			return this;
+		};
+
+		_proto.applyMatrix4 = function applyMatrix4(matrix) {
+			// transform of empty box is an empty box.
+			if (this.isEmpty()) return this; // NOTE: I am using a binary pattern to specify all 2^3 combinations below
+
+			_points[0].set(this.min.x, this.min.y, this.min.z).applyMatrix4(matrix); // 000
+
+
+			_points[1].set(this.min.x, this.min.y, this.max.z).applyMatrix4(matrix); // 001
+
+
+			_points[2].set(this.min.x, this.max.y, this.min.z).applyMatrix4(matrix); // 010
+
+
+			_points[3].set(this.min.x, this.max.y, this.max.z).applyMatrix4(matrix); // 011
+
+
+			_points[4].set(this.max.x, this.min.y, this.min.z).applyMatrix4(matrix); // 100
+
+
+			_points[5].set(this.max.x, this.min.y, this.max.z).applyMatrix4(matrix); // 101
+
+
+			_points[6].set(this.max.x, this.max.y, this.min.z).applyMatrix4(matrix); // 110
+
+
+			_points[7].set(this.max.x, this.max.y, this.max.z).applyMatrix4(matrix); // 111
+
+
+			this.setFromPoints(_points);
+			return this;
+		};
+
+		_proto.translate = function translate(offset) {
+			this.min.add(offset);
+			this.max.add(offset);
+			return this;
+		};
+
+		_proto.equals = function equals(box) {
+			return box.min.equals(this.min) && box.max.equals(this.max);
+		};
+
+		return Box3;
+	}();
+
+	Box3.prototype.isBox3 = true;
+	var _points = [/*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3(), /*@__PURE__*/new Vector3()];
+
+	var _vector$1 = /*@__PURE__*/new Vector3();
+
+	var _box = /*@__PURE__*/new Box3(); // triangle centered vertices
+
+
+	var _v0 = /*@__PURE__*/new Vector3();
+
+	var _v1 = /*@__PURE__*/new Vector3();
+
+	var _v2 = /*@__PURE__*/new Vector3(); // triangle edge vectors
+
+
+	var _f0 = /*@__PURE__*/new Vector3();
+
+	var _f1 = /*@__PURE__*/new Vector3();
+
+	var _f2 = /*@__PURE__*/new Vector3();
+
+	var _center = /*@__PURE__*/new Vector3();
+
+	var _extents = /*@__PURE__*/new Vector3();
+
+	var _triangleNormal = /*@__PURE__*/new Vector3();
+
+	var _testAxis = /*@__PURE__*/new Vector3();
+
+	function satForAxes(axes, v0, v1, v2, extents) {
+		for (var i = 0, j = axes.length - 3; i <= j; i += 3) {
+			_testAxis.fromArray(axes, i); // project the aabb onto the seperating axis
+
+
+			var r = extents.x * Math.abs(_testAxis.x) + extents.y * Math.abs(_testAxis.y) + extents.z * Math.abs(_testAxis.z); // project all 3 vertices of the triangle onto the seperating axis
+
+			var p0 = v0.dot(_testAxis);
+			var p1 = v1.dot(_testAxis);
+			var p2 = v2.dot(_testAxis); // actual test, basically see if either of the most extreme of the triangle points intersects r
+
+			if (Math.max(-Math.max(p0, p1, p2), Math.min(p0, p1, p2)) > r) {
+				// points of the projected triangle are outside the projected half-length of the aabb
+				// the axis is seperating and we can exit
+				return false;
+			}
+		}
+
+		return true;
+	}
+
+	var _box$1 = /*@__PURE__*/new Box3();
+
+	var Sphere = /*#__PURE__*/function () {
+		function Sphere(center, radius) {
+			if (center === void 0) {
+				center = new Vector3();
+			}
+
+			if (radius === void 0) {
+				radius = -1;
+			}
+
+			this.center = center;
+			this.radius = radius;
+		}
+
+		var _proto = Sphere.prototype;
+
+		_proto.set = function set(center, radius) {
+			this.center.copy(center);
+			this.radius = radius;
+			return this;
+		};
+
+		_proto.setFromPoints = function setFromPoints(points, optionalCenter) {
+			var center = this.center;
+
+			if (optionalCenter !== undefined) {
+				center.copy(optionalCenter);
+			} else {
+				_box$1.setFromPoints(points).getCenter(center);
+			}
+
+			var maxRadiusSq = 0;
+
+			for (var i = 0, il = points.length; i < il; i++) {
+				maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(points[i]));
+			}
+
+			this.radius = Math.sqrt(maxRadiusSq);
+			return this;
+		};
+
+		_proto.copy = function copy(sphere) {
+			this.center.copy(sphere.center);
+			this.radius = sphere.radius;
+			return this;
+		};
+
+		_proto.isEmpty = function isEmpty() {
+			return this.radius < 0;
+		};
+
+		_proto.makeEmpty = function makeEmpty() {
+			this.center.set(0, 0, 0);
+			this.radius = -1;
+			return this;
+		};
+
+		_proto.containsPoint = function containsPoint(point) {
+			return point.distanceToSquared(this.center) <= this.radius * this.radius;
+		};
+
+		_proto.distanceToPoint = function distanceToPoint(point) {
+			return point.distanceTo(this.center) - this.radius;
+		};
+
+		_proto.intersectsSphere = function intersectsSphere(sphere) {
+			var radiusSum = this.radius + sphere.radius;
+			return sphere.center.distanceToSquared(this.center) <= radiusSum * radiusSum;
+		};
+
+		_proto.intersectsBox = function intersectsBox(box) {
+			return box.intersectsSphere(this);
+		};
+
+		_proto.intersectsPlane = function intersectsPlane(plane) {
+			return Math.abs(plane.distanceToPoint(this.center)) <= this.radius;
+		};
+
+		_proto.clampPoint = function clampPoint(point, target) {
+			var deltaLengthSq = this.center.distanceToSquared(point);
+
+			if (target === undefined) {
+				console.warn('THREE.Sphere: .clampPoint() target is now required');
+				target = new Vector3();
+			}
+
+			target.copy(point);
+
+			if (deltaLengthSq > this.radius * this.radius) {
+				target.sub(this.center).normalize();
+				target.multiplyScalar(this.radius).add(this.center);
+			}
+
+			return target;
+		};
+
+		_proto.getBoundingBox = function getBoundingBox(target) {
+			if (target === undefined) {
+				console.warn('THREE.Sphere: .getBoundingBox() target is now required');
+				target = new Box3();
+			}
+
+			if (this.isEmpty()) {
+				// Empty sphere produces empty bounding box
+				target.makeEmpty();
+				return target;
+			}
+
+			target.set(this.center, this.center);
+			target.expandByScalar(this.radius);
+			return target;
+		};
+
+		_proto.applyMatrix4 = function applyMatrix4(matrix) {
+			this.center.applyMatrix4(matrix);
+			this.radius = this.radius * matrix.getMaxScaleOnAxis();
+			return this;
+		};
+
+		_proto.translate = function translate(offset) {
+			this.center.add(offset);
+			return this;
+		};
+
+		_proto.equals = function equals(sphere) {
+			return sphere.center.equals(this.center) && sphere.radius === this.radius;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		return Sphere;
+	}();
+
+	var _vector$2 = /*@__PURE__*/new Vector3();
+
+	var _segCenter = /*@__PURE__*/new Vector3();
+
+	var _segDir = /*@__PURE__*/new Vector3();
+
+	var _diff = /*@__PURE__*/new Vector3();
+
+	var _edge1 = /*@__PURE__*/new Vector3();
+
+	var _edge2 = /*@__PURE__*/new Vector3();
+
+	var _normal = /*@__PURE__*/new Vector3();
+
+	var Ray = /*#__PURE__*/function () {
+		function Ray(origin, direction) {
+			if (origin === void 0) {
+				origin = new Vector3();
+			}
+
+			if (direction === void 0) {
+				direction = new Vector3(0, 0, -1);
+			}
+
+			this.origin = origin;
+			this.direction = direction;
+		}
+
+		var _proto = Ray.prototype;
+
+		_proto.set = function set(origin, direction) {
+			this.origin.copy(origin);
+			this.direction.copy(direction);
+			return this;
+		};
+
+		_proto.copy = function copy(ray) {
+			this.origin.copy(ray.origin);
+			this.direction.copy(ray.direction);
+			return this;
+		};
+
+		_proto.at = function at(t, target) {
+			if (target === undefined) {
+				console.warn('THREE.Ray: .at() target is now required');
+				target = new Vector3();
+			}
+
+			return target.copy(this.direction).multiplyScalar(t).add(this.origin);
+		};
+
+		_proto.lookAt = function lookAt(v) {
+			this.direction.copy(v).sub(this.origin).normalize();
+			return this;
+		};
+
+		_proto.recast = function recast(t) {
+			this.origin.copy(this.at(t, _vector$2));
+			return this;
+		};
+
+		_proto.closestPointToPoint = function closestPointToPoint(point, target) {
+			if (target === undefined) {
+				console.warn('THREE.Ray: .closestPointToPoint() target is now required');
+				target = new Vector3();
+			}
+
+			target.subVectors(point, this.origin);
+			var directionDistance = target.dot(this.direction);
+
+			if (directionDistance < 0) {
+				return target.copy(this.origin);
+			}
+
+			return target.copy(this.direction).multiplyScalar(directionDistance).add(this.origin);
+		};
+
+		_proto.distanceToPoint = function distanceToPoint(point) {
+			return Math.sqrt(this.distanceSqToPoint(point));
+		};
+
+		_proto.distanceSqToPoint = function distanceSqToPoint(point) {
+			var directionDistance = _vector$2.subVectors(point, this.origin).dot(this.direction); // point behind the ray
+
+
+			if (directionDistance < 0) {
+				return this.origin.distanceToSquared(point);
+			}
+
+			_vector$2.copy(this.direction).multiplyScalar(directionDistance).add(this.origin);
+
+			return _vector$2.distanceToSquared(point);
+		};
+
+		_proto.distanceSqToSegment = function distanceSqToSegment(v0, v1, optionalPointOnRay, optionalPointOnSegment) {
+			// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteDistRaySegment.h
+			// It returns the min distance between the ray and the segment
+			// defined by v0 and v1
+			// It can also set two optional targets :
+			// - The closest point on the ray
+			// - The closest point on the segment
+			_segCenter.copy(v0).add(v1).multiplyScalar(0.5);
+
+			_segDir.copy(v1).sub(v0).normalize();
+
+			_diff.copy(this.origin).sub(_segCenter);
+
+			var segExtent = v0.distanceTo(v1) * 0.5;
+			var a01 = -this.direction.dot(_segDir);
+
+			var b0 = _diff.dot(this.direction);
+
+			var b1 = -_diff.dot(_segDir);
+
+			var c = _diff.lengthSq();
+
+			var det = Math.abs(1 - a01 * a01);
+			var s0, s1, sqrDist, extDet;
+
+			if (det > 0) {
+				// The ray and segment are not parallel.
+				s0 = a01 * b1 - b0;
+				s1 = a01 * b0 - b1;
+				extDet = segExtent * det;
+
+				if (s0 >= 0) {
+					if (s1 >= -extDet) {
+						if (s1 <= extDet) {
+							// region 0
+							// Minimum at interior points of ray and segment.
+							var invDet = 1 / det;
+							s0 *= invDet;
+							s1 *= invDet;
+							sqrDist = s0 * (s0 + a01 * s1 + 2 * b0) + s1 * (a01 * s0 + s1 + 2 * b1) + c;
+						} else {
+							// region 1
+							s1 = segExtent;
+							s0 = Math.max(0, -(a01 * s1 + b0));
+							sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+						}
+					} else {
+						// region 5
+						s1 = -segExtent;
+						s0 = Math.max(0, -(a01 * s1 + b0));
+						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+					}
+				} else {
+					if (s1 <= -extDet) {
+						// region 4
+						s0 = Math.max(0, -(-a01 * segExtent + b0));
+						s1 = s0 > 0 ? -segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
+						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+					} else if (s1 <= extDet) {
+						// region 3
+						s0 = 0;
+						s1 = Math.min(Math.max(-segExtent, -b1), segExtent);
+						sqrDist = s1 * (s1 + 2 * b1) + c;
+					} else {
+						// region 2
+						s0 = Math.max(0, -(a01 * segExtent + b0));
+						s1 = s0 > 0 ? segExtent : Math.min(Math.max(-segExtent, -b1), segExtent);
+						sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+					}
+				}
+			} else {
+				// Ray and segment are parallel.
+				s1 = a01 > 0 ? -segExtent : segExtent;
+				s0 = Math.max(0, -(a01 * s1 + b0));
+				sqrDist = -s0 * s0 + s1 * (s1 + 2 * b1) + c;
+			}
+
+			if (optionalPointOnRay) {
+				optionalPointOnRay.copy(this.direction).multiplyScalar(s0).add(this.origin);
+			}
+
+			if (optionalPointOnSegment) {
+				optionalPointOnSegment.copy(_segDir).multiplyScalar(s1).add(_segCenter);
+			}
+
+			return sqrDist;
+		};
+
+		_proto.intersectSphere = function intersectSphere(sphere, target) {
+			_vector$2.subVectors(sphere.center, this.origin);
+
+			var tca = _vector$2.dot(this.direction);
+
+			var d2 = _vector$2.dot(_vector$2) - tca * tca;
+			var radius2 = sphere.radius * sphere.radius;
+			if (d2 > radius2) return null;
+			var thc = Math.sqrt(radius2 - d2); // t0 = first intersect point - entrance on front of sphere
+
+			var t0 = tca - thc; // t1 = second intersect point - exit point on back of sphere
+
+			var t1 = tca + thc; // test to see if both t0 and t1 are behind the ray - if so, return null
+
+			if (t0 < 0 && t1 < 0) return null; // test to see if t0 is behind the ray:
+			// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
+			// in order to always return an intersect point that is in front of the ray.
+
+			if (t0 < 0) return this.at(t1, target); // else t0 is in front of the ray, so return the first collision point scaled by t0
+
+			return this.at(t0, target);
+		};
+
+		_proto.intersectsSphere = function intersectsSphere(sphere) {
+			return this.distanceSqToPoint(sphere.center) <= sphere.radius * sphere.radius;
+		};
+
+		_proto.distanceToPlane = function distanceToPlane(plane) {
+			var denominator = plane.normal.dot(this.direction);
+
+			if (denominator === 0) {
+				// line is coplanar, return origin
+				if (plane.distanceToPoint(this.origin) === 0) {
+					return 0;
+				} // Null is preferable to undefined since undefined means.... it is undefined
+
+
+				return null;
+			}
+
+			var t = -(this.origin.dot(plane.normal) + plane.constant) / denominator; // Return if the ray never intersects the plane
+
+			return t >= 0 ? t : null;
+		};
+
+		_proto.intersectPlane = function intersectPlane(plane, target) {
+			var t = this.distanceToPlane(plane);
+
+			if (t === null) {
+				return null;
+			}
+
+			return this.at(t, target);
+		};
+
+		_proto.intersectsPlane = function intersectsPlane(plane) {
+			// check if the ray lies on the plane first
+			var distToPoint = plane.distanceToPoint(this.origin);
+
+			if (distToPoint === 0) {
+				return true;
+			}
+
+			var denominator = plane.normal.dot(this.direction);
+
+			if (denominator * distToPoint < 0) {
+				return true;
+			} // ray origin is behind the plane (and is pointing behind it)
+
+
+			return false;
+		};
+
+		_proto.intersectBox = function intersectBox(box, target) {
+			var tmin, tmax, tymin, tymax, tzmin, tzmax;
+			var invdirx = 1 / this.direction.x,
+					invdiry = 1 / this.direction.y,
+					invdirz = 1 / this.direction.z;
+			var origin = this.origin;
+
+			if (invdirx >= 0) {
+				tmin = (box.min.x - origin.x) * invdirx;
+				tmax = (box.max.x - origin.x) * invdirx;
+			} else {
+				tmin = (box.max.x - origin.x) * invdirx;
+				tmax = (box.min.x - origin.x) * invdirx;
+			}
+
+			if (invdiry >= 0) {
+				tymin = (box.min.y - origin.y) * invdiry;
+				tymax = (box.max.y - origin.y) * invdiry;
+			} else {
+				tymin = (box.max.y - origin.y) * invdiry;
+				tymax = (box.min.y - origin.y) * invdiry;
+			}
+
+			if (tmin > tymax || tymin > tmax) return null; // These lines also handle the case where tmin or tmax is NaN
+			// (result of 0 * Infinity). x !== x returns true if x is NaN
+
+			if (tymin > tmin || tmin !== tmin) tmin = tymin;
+			if (tymax < tmax || tmax !== tmax) tmax = tymax;
+
+			if (invdirz >= 0) {
+				tzmin = (box.min.z - origin.z) * invdirz;
+				tzmax = (box.max.z - origin.z) * invdirz;
+			} else {
+				tzmin = (box.max.z - origin.z) * invdirz;
+				tzmax = (box.min.z - origin.z) * invdirz;
+			}
+
+			if (tmin > tzmax || tzmin > tmax) return null;
+			if (tzmin > tmin || tmin !== tmin) tmin = tzmin;
+			if (tzmax < tmax || tmax !== tmax) tmax = tzmax; //return point closest to the ray (positive side)
+
+			if (tmax < 0) return null;
+			return this.at(tmin >= 0 ? tmin : tmax, target);
+		};
+
+		_proto.intersectsBox = function intersectsBox(box) {
+			return this.intersectBox(box, _vector$2) !== null;
+		};
+
+		_proto.intersectTriangle = function intersectTriangle(a, b, c, backfaceCulling, target) {
+			// Compute the offset origin, edges, and normal.
+			// from http://www.geometrictools.com/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h
+			_edge1.subVectors(b, a);
+
+			_edge2.subVectors(c, a);
+
+			_normal.crossVectors(_edge1, _edge2); // Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
+			// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
+			//	 |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
+			//	 |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
+			//	 |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
+
+
+			var DdN = this.direction.dot(_normal);
+			var sign;
+
+			if (DdN > 0) {
+				if (backfaceCulling) return null;
+				sign = 1;
+			} else if (DdN < 0) {
+				sign = -1;
+				DdN = -DdN;
+			} else {
+				return null;
+			}
+
+			_diff.subVectors(this.origin, a);
+
+			var DdQxE2 = sign * this.direction.dot(_edge2.crossVectors(_diff, _edge2)); // b1 < 0, no intersection
+
+			if (DdQxE2 < 0) {
+				return null;
+			}
+
+			var DdE1xQ = sign * this.direction.dot(_edge1.cross(_diff)); // b2 < 0, no intersection
+
+			if (DdE1xQ < 0) {
+				return null;
+			} // b1+b2 > 1, no intersection
+
+
+			if (DdQxE2 + DdE1xQ > DdN) {
+				return null;
+			} // Line intersects triangle, check if ray does.
+
+
+			var QdN = -sign * _diff.dot(_normal); // t < 0, no intersection
+
+
+			if (QdN < 0) {
+				return null;
+			} // Ray intersects triangle.
+
+
+			return this.at(QdN / DdN, target);
+		};
+
+		_proto.applyMatrix4 = function applyMatrix4(matrix4) {
+			this.origin.applyMatrix4(matrix4);
+			this.direction.transformDirection(matrix4);
+			return this;
+		};
+
+		_proto.equals = function equals(ray) {
+			return ray.origin.equals(this.origin) && ray.direction.equals(this.direction);
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		return Ray;
+	}();
+
+	var Matrix4 = /*#__PURE__*/function () {
+		function Matrix4() {
+			this.elements = [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1];
+
+			if (arguments.length > 0) {
+				console.error('THREE.Matrix4: the constructor no longer reads arguments. use .set() instead.');
+			}
+		}
+
+		var _proto = Matrix4.prototype;
+
+		_proto.set = function set(n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44) {
+			var te = this.elements;
+			te[0] = n11;
+			te[4] = n12;
+			te[8] = n13;
+			te[12] = n14;
+			te[1] = n21;
+			te[5] = n22;
+			te[9] = n23;
+			te[13] = n24;
+			te[2] = n31;
+			te[6] = n32;
+			te[10] = n33;
+			te[14] = n34;
+			te[3] = n41;
+			te[7] = n42;
+			te[11] = n43;
+			te[15] = n44;
+			return this;
+		};
+
+		_proto.identity = function identity() {
+			this.set(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new Matrix4().fromArray(this.elements);
+		};
+
+		_proto.copy = function copy(m) {
+			var te = this.elements;
+			var me = m.elements;
+			te[0] = me[0];
+			te[1] = me[1];
+			te[2] = me[2];
+			te[3] = me[3];
+			te[4] = me[4];
+			te[5] = me[5];
+			te[6] = me[6];
+			te[7] = me[7];
+			te[8] = me[8];
+			te[9] = me[9];
+			te[10] = me[10];
+			te[11] = me[11];
+			te[12] = me[12];
+			te[13] = me[13];
+			te[14] = me[14];
+			te[15] = me[15];
+			return this;
+		};
+
+		_proto.copyPosition = function copyPosition(m) {
+			var te = this.elements,
+					me = m.elements;
+			te[12] = me[12];
+			te[13] = me[13];
+			te[14] = me[14];
+			return this;
+		};
+
+		_proto.setFromMatrix3 = function setFromMatrix3(m) {
+			var me = m.elements;
+			this.set(me[0], me[3], me[6], 0, me[1], me[4], me[7], 0, me[2], me[5], me[8], 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.extractBasis = function extractBasis(xAxis, yAxis, zAxis) {
+			xAxis.setFromMatrixColumn(this, 0);
+			yAxis.setFromMatrixColumn(this, 1);
+			zAxis.setFromMatrixColumn(this, 2);
+			return this;
+		};
+
+		_proto.makeBasis = function makeBasis(xAxis, yAxis, zAxis) {
+			this.set(xAxis.x, yAxis.x, zAxis.x, 0, xAxis.y, yAxis.y, zAxis.y, 0, xAxis.z, yAxis.z, zAxis.z, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.extractRotation = function extractRotation(m) {
+			// this method does not support reflection matrices
+			var te = this.elements;
+			var me = m.elements;
+
+			var scaleX = 1 / _v1$1.setFromMatrixColumn(m, 0).length();
+
+			var scaleY = 1 / _v1$1.setFromMatrixColumn(m, 1).length();
+
+			var scaleZ = 1 / _v1$1.setFromMatrixColumn(m, 2).length();
+
+			te[0] = me[0] * scaleX;
+			te[1] = me[1] * scaleX;
+			te[2] = me[2] * scaleX;
+			te[3] = 0;
+			te[4] = me[4] * scaleY;
+			te[5] = me[5] * scaleY;
+			te[6] = me[6] * scaleY;
+			te[7] = 0;
+			te[8] = me[8] * scaleZ;
+			te[9] = me[9] * scaleZ;
+			te[10] = me[10] * scaleZ;
+			te[11] = 0;
+			te[12] = 0;
+			te[13] = 0;
+			te[14] = 0;
+			te[15] = 1;
+			return this;
+		};
+
+		_proto.makeRotationFromEuler = function makeRotationFromEuler(euler) {
+			if (!(euler && euler.isEuler)) {
+				console.error('THREE.Matrix4: .makeRotationFromEuler() now expects a Euler rotation rather than a Vector3 and order.');
+			}
+
+			var te = this.elements;
+			var x = euler.x,
+					y = euler.y,
+					z = euler.z;
+			var a = Math.cos(x),
+					b = Math.sin(x);
+			var c = Math.cos(y),
+					d = Math.sin(y);
+			var e = Math.cos(z),
+					f = Math.sin(z);
+
+			if (euler.order === 'XYZ') {
+				var ae = a * e,
+						af = a * f,
+						be = b * e,
+						bf = b * f;
+				te[0] = c * e;
+				te[4] = -c * f;
+				te[8] = d;
+				te[1] = af + be * d;
+				te[5] = ae - bf * d;
+				te[9] = -b * c;
+				te[2] = bf - ae * d;
+				te[6] = be + af * d;
+				te[10] = a * c;
+			} else if (euler.order === 'YXZ') {
+				var ce = c * e,
+						cf = c * f,
+						de = d * e,
+						df = d * f;
+				te[0] = ce + df * b;
+				te[4] = de * b - cf;
+				te[8] = a * d;
+				te[1] = a * f;
+				te[5] = a * e;
+				te[9] = -b;
+				te[2] = cf * b - de;
+				te[6] = df + ce * b;
+				te[10] = a * c;
+			} else if (euler.order === 'ZXY') {
+				var _ce = c * e,
+						_cf = c * f,
+						_de = d * e,
+						_df = d * f;
+
+				te[0] = _ce - _df * b;
+				te[4] = -a * f;
+				te[8] = _de + _cf * b;
+				te[1] = _cf + _de * b;
+				te[5] = a * e;
+				te[9] = _df - _ce * b;
+				te[2] = -a * d;
+				te[6] = b;
+				te[10] = a * c;
+			} else if (euler.order === 'ZYX') {
+				var _ae = a * e,
+						_af = a * f,
+						_be = b * e,
+						_bf = b * f;
+
+				te[0] = c * e;
+				te[4] = _be * d - _af;
+				te[8] = _ae * d + _bf;
+				te[1] = c * f;
+				te[5] = _bf * d + _ae;
+				te[9] = _af * d - _be;
+				te[2] = -d;
+				te[6] = b * c;
+				te[10] = a * c;
+			} else if (euler.order === 'YZX') {
+				var ac = a * c,
+						ad = a * d,
+						bc = b * c,
+						bd = b * d;
+				te[0] = c * e;
+				te[4] = bd - ac * f;
+				te[8] = bc * f + ad;
+				te[1] = f;
+				te[5] = a * e;
+				te[9] = -b * e;
+				te[2] = -d * e;
+				te[6] = ad * f + bc;
+				te[10] = ac - bd * f;
+			} else if (euler.order === 'XZY') {
+				var _ac = a * c,
+						_ad = a * d,
+						_bc = b * c,
+						_bd = b * d;
+
+				te[0] = c * e;
+				te[4] = -f;
+				te[8] = d * e;
+				te[1] = _ac * f + _bd;
+				te[5] = a * e;
+				te[9] = _ad * f - _bc;
+				te[2] = _bc * f - _ad;
+				te[6] = b * e;
+				te[10] = _bd * f + _ac;
+			} // bottom row
+
+
+			te[3] = 0;
+			te[7] = 0;
+			te[11] = 0; // last column
+
+			te[12] = 0;
+			te[13] = 0;
+			te[14] = 0;
+			te[15] = 1;
+			return this;
+		};
+
+		_proto.makeRotationFromQuaternion = function makeRotationFromQuaternion(q) {
+			return this.compose(_zero, q, _one);
+		};
+
+		_proto.lookAt = function lookAt(eye, target, up) {
+			var te = this.elements;
+
+			_z.subVectors(eye, target);
+
+			if (_z.lengthSq() === 0) {
+				// eye and target are in the same position
+				_z.z = 1;
+			}
+
+			_z.normalize();
+
+			_x.crossVectors(up, _z);
+
+			if (_x.lengthSq() === 0) {
+				// up and z are parallel
+				if (Math.abs(up.z) === 1) {
+					_z.x += 0.0001;
+				} else {
+					_z.z += 0.0001;
+				}
+
+				_z.normalize();
+
+				_x.crossVectors(up, _z);
+			}
+
+			_x.normalize();
+
+			_y.crossVectors(_z, _x);
+
+			te[0] = _x.x;
+			te[4] = _y.x;
+			te[8] = _z.x;
+			te[1] = _x.y;
+			te[5] = _y.y;
+			te[9] = _z.y;
+			te[2] = _x.z;
+			te[6] = _y.z;
+			te[10] = _z.z;
+			return this;
+		};
+
+		_proto.multiply = function multiply(m, n) {
+			if (n !== undefined) {
+				console.warn('THREE.Matrix4: .multiply() now only accepts one argument. Use .multiplyMatrices( a, b ) instead.');
+				return this.multiplyMatrices(m, n);
+			}
+
+			return this.multiplyMatrices(this, m);
+		};
+
+		_proto.premultiply = function premultiply(m) {
+			return this.multiplyMatrices(m, this);
+		};
+
+		_proto.multiplyMatrices = function multiplyMatrices(a, b) {
+			var ae = a.elements;
+			var be = b.elements;
+			var te = this.elements;
+			var a11 = ae[0],
+					a12 = ae[4],
+					a13 = ae[8],
+					a14 = ae[12];
+			var a21 = ae[1],
+					a22 = ae[5],
+					a23 = ae[9],
+					a24 = ae[13];
+			var a31 = ae[2],
+					a32 = ae[6],
+					a33 = ae[10],
+					a34 = ae[14];
+			var a41 = ae[3],
+					a42 = ae[7],
+					a43 = ae[11],
+					a44 = ae[15];
+			var b11 = be[0],
+					b12 = be[4],
+					b13 = be[8],
+					b14 = be[12];
+			var b21 = be[1],
+					b22 = be[5],
+					b23 = be[9],
+					b24 = be[13];
+			var b31 = be[2],
+					b32 = be[6],
+					b33 = be[10],
+					b34 = be[14];
+			var b41 = be[3],
+					b42 = be[7],
+					b43 = be[11],
+					b44 = be[15];
+			te[0] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
+			te[4] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
+			te[8] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
+			te[12] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
+			te[1] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
+			te[5] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
+			te[9] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
+			te[13] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
+			te[2] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
+			te[6] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
+			te[10] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
+			te[14] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
+			te[3] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
+			te[7] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
+			te[11] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
+			te[15] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
+			return this;
+		};
+
+		_proto.multiplyScalar = function multiplyScalar(s) {
+			var te = this.elements;
+			te[0] *= s;
+			te[4] *= s;
+			te[8] *= s;
+			te[12] *= s;
+			te[1] *= s;
+			te[5] *= s;
+			te[9] *= s;
+			te[13] *= s;
+			te[2] *= s;
+			te[6] *= s;
+			te[10] *= s;
+			te[14] *= s;
+			te[3] *= s;
+			te[7] *= s;
+			te[11] *= s;
+			te[15] *= s;
+			return this;
+		};
+
+		_proto.determinant = function determinant() {
+			var te = this.elements;
+			var n11 = te[0],
+					n12 = te[4],
+					n13 = te[8],
+					n14 = te[12];
+			var n21 = te[1],
+					n22 = te[5],
+					n23 = te[9],
+					n24 = te[13];
+			var n31 = te[2],
+					n32 = te[6],
+					n33 = te[10],
+					n34 = te[14];
+			var n41 = te[3],
+					n42 = te[7],
+					n43 = te[11],
+					n44 = te[15]; //TODO: make this more efficient
+			//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )
+
+			return n41 * (+n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34) + n42 * (+n11 * n23 * n34 - n11 * n24 * n33 + n14 * n21 * n33 - n13 * n21 * n34 + n13 * n24 * n31 - n14 * n23 * n31) + n43 * (+n11 * n24 * n32 - n11 * n22 * n34 - n14 * n21 * n32 + n12 * n21 * n34 + n14 * n22 * n31 - n12 * n24 * n31) + n44 * (-n13 * n22 * n31 - n11 * n23 * n32 + n11 * n22 * n33 + n13 * n21 * n32 - n12 * n21 * n33 + n12 * n23 * n31);
+		};
+
+		_proto.transpose = function transpose() {
+			var te = this.elements;
+			var tmp;
+			tmp = te[1];
+			te[1] = te[4];
+			te[4] = tmp;
+			tmp = te[2];
+			te[2] = te[8];
+			te[8] = tmp;
+			tmp = te[6];
+			te[6] = te[9];
+			te[9] = tmp;
+			tmp = te[3];
+			te[3] = te[12];
+			te[12] = tmp;
+			tmp = te[7];
+			te[7] = te[13];
+			te[13] = tmp;
+			tmp = te[11];
+			te[11] = te[14];
+			te[14] = tmp;
+			return this;
+		};
+
+		_proto.setPosition = function setPosition(x, y, z) {
+			var te = this.elements;
+
+			if (x.isVector3) {
+				te[12] = x.x;
+				te[13] = x.y;
+				te[14] = x.z;
+			} else {
+				te[12] = x;
+				te[13] = y;
+				te[14] = z;
+			}
+
+			return this;
+		};
+
+		_proto.invert = function invert() {
+			// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
+			var te = this.elements,
+					n11 = te[0],
+					n21 = te[1],
+					n31 = te[2],
+					n41 = te[3],
+					n12 = te[4],
+					n22 = te[5],
+					n32 = te[6],
+					n42 = te[7],
+					n13 = te[8],
+					n23 = te[9],
+					n33 = te[10],
+					n43 = te[11],
+					n14 = te[12],
+					n24 = te[13],
+					n34 = te[14],
+					n44 = te[15],
+					t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
+					t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
+					t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
+					t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
+			var det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
+			if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+			var detInv = 1 / det;
+			te[0] = t11 * detInv;
+			te[1] = (n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44) * detInv;
+			te[2] = (n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44) * detInv;
+			te[3] = (n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43) * detInv;
+			te[4] = t12 * detInv;
+			te[5] = (n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44) * detInv;
+			te[6] = (n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44) * detInv;
+			te[7] = (n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43) * detInv;
+			te[8] = t13 * detInv;
+			te[9] = (n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44) * detInv;
+			te[10] = (n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44) * detInv;
+			te[11] = (n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43) * detInv;
+			te[12] = t14 * detInv;
+			te[13] = (n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34) * detInv;
+			te[14] = (n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34) * detInv;
+			te[15] = (n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33) * detInv;
+			return this;
+		};
+
+		_proto.scale = function scale(v) {
+			var te = this.elements;
+			var x = v.x,
+					y = v.y,
+					z = v.z;
+			te[0] *= x;
+			te[4] *= y;
+			te[8] *= z;
+			te[1] *= x;
+			te[5] *= y;
+			te[9] *= z;
+			te[2] *= x;
+			te[6] *= y;
+			te[10] *= z;
+			te[3] *= x;
+			te[7] *= y;
+			te[11] *= z;
+			return this;
+		};
+
+		_proto.getMaxScaleOnAxis = function getMaxScaleOnAxis() {
+			var te = this.elements;
+			var scaleXSq = te[0] * te[0] + te[1] * te[1] + te[2] * te[2];
+			var scaleYSq = te[4] * te[4] + te[5] * te[5] + te[6] * te[6];
+			var scaleZSq = te[8] * te[8] + te[9] * te[9] + te[10] * te[10];
+			return Math.sqrt(Math.max(scaleXSq, scaleYSq, scaleZSq));
+		};
+
+		_proto.makeTranslation = function makeTranslation(x, y, z) {
+			this.set(1, 0, 0, x, 0, 1, 0, y, 0, 0, 1, z, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.makeRotationX = function makeRotationX(theta) {
+			var c = Math.cos(theta),
+					s = Math.sin(theta);
+			this.set(1, 0, 0, 0, 0, c, -s, 0, 0, s, c, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.makeRotationY = function makeRotationY(theta) {
+			var c = Math.cos(theta),
+					s = Math.sin(theta);
+			this.set(c, 0, s, 0, 0, 1, 0, 0, -s, 0, c, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.makeRotationZ = function makeRotationZ(theta) {
+			var c = Math.cos(theta),
+					s = Math.sin(theta);
+			this.set(c, -s, 0, 0, s, c, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.makeRotationAxis = function makeRotationAxis(axis, angle) {
+			// Based on http://www.gamedev.net/reference/articles/article1199.asp
+			var c = Math.cos(angle);
+			var s = Math.sin(angle);
+			var t = 1 - c;
+			var x = axis.x,
+					y = axis.y,
+					z = axis.z;
+			var tx = t * x,
+					ty = t * y;
+			this.set(tx * x + c, tx * y - s * z, tx * z + s * y, 0, tx * y + s * z, ty * y + c, ty * z - s * x, 0, tx * z - s * y, ty * z + s * x, t * z * z + c, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.makeScale = function makeScale(x, y, z) {
+			this.set(x, 0, 0, 0, 0, y, 0, 0, 0, 0, z, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.makeShear = function makeShear(x, y, z) {
+			this.set(1, y, z, 0, x, 1, z, 0, x, y, 1, 0, 0, 0, 0, 1);
+			return this;
+		};
+
+		_proto.compose = function compose(position, quaternion, scale) {
+			var te = this.elements;
+			var x = quaternion._x,
+					y = quaternion._y,
+					z = quaternion._z,
+					w = quaternion._w;
+			var x2 = x + x,
+					y2 = y + y,
+					z2 = z + z;
+			var xx = x * x2,
+					xy = x * y2,
+					xz = x * z2;
+			var yy = y * y2,
+					yz = y * z2,
+					zz = z * z2;
+			var wx = w * x2,
+					wy = w * y2,
+					wz = w * z2;
+			var sx = scale.x,
+					sy = scale.y,
+					sz = scale.z;
+			te[0] = (1 - (yy + zz)) * sx;
+			te[1] = (xy + wz) * sx;
+			te[2] = (xz - wy) * sx;
+			te[3] = 0;
+			te[4] = (xy - wz) * sy;
+			te[5] = (1 - (xx + zz)) * sy;
+			te[6] = (yz + wx) * sy;
+			te[7] = 0;
+			te[8] = (xz + wy) * sz;
+			te[9] = (yz - wx) * sz;
+			te[10] = (1 - (xx + yy)) * sz;
+			te[11] = 0;
+			te[12] = position.x;
+			te[13] = position.y;
+			te[14] = position.z;
+			te[15] = 1;
+			return this;
+		};
+
+		_proto.decompose = function decompose(position, quaternion, scale) {
+			var te = this.elements;
+
+			var sx = _v1$1.set(te[0], te[1], te[2]).length();
+
+			var sy = _v1$1.set(te[4], te[5], te[6]).length();
+
+			var sz = _v1$1.set(te[8], te[9], te[10]).length(); // if determine is negative, we need to invert one scale
+
+
+			var det = this.determinant();
+			if (det < 0) sx = -sx;
+			position.x = te[12];
+			position.y = te[13];
+			position.z = te[14]; // scale the rotation part
+
+			_m1.copy(this);
+
+			var invSX = 1 / sx;
+			var invSY = 1 / sy;
+			var invSZ = 1 / sz;
+			_m1.elements[0] *= invSX;
+			_m1.elements[1] *= invSX;
+			_m1.elements[2] *= invSX;
+			_m1.elements[4] *= invSY;
+			_m1.elements[5] *= invSY;
+			_m1.elements[6] *= invSY;
+			_m1.elements[8] *= invSZ;
+			_m1.elements[9] *= invSZ;
+			_m1.elements[10] *= invSZ;
+			quaternion.setFromRotationMatrix(_m1);
+			scale.x = sx;
+			scale.y = sy;
+			scale.z = sz;
+			return this;
+		};
+
+		_proto.makePerspective = function makePerspective(left, right, top, bottom, near, far) {
+			if (far === undefined) {
+				console.warn('THREE.Matrix4: .makePerspective() has been redefined and has a new signature. Please check the docs.');
+			}
+
+			var te = this.elements;
+			var x = 2 * near / (right - left);
+			var y = 2 * near / (top - bottom);
+			var a = (right + left) / (right - left);
+			var b = (top + bottom) / (top - bottom);
+			var c = -(far + near) / (far - near);
+			var d = -2 * far * near / (far - near);
+			te[0] = x;
+			te[4] = 0;
+			te[8] = a;
+			te[12] = 0;
+			te[1] = 0;
+			te[5] = y;
+			te[9] = b;
+			te[13] = 0;
+			te[2] = 0;
+			te[6] = 0;
+			te[10] = c;
+			te[14] = d;
+			te[3] = 0;
+			te[7] = 0;
+			te[11] = -1;
+			te[15] = 0;
+			return this;
+		};
+
+		_proto.makeOrthographic = function makeOrthographic(left, right, top, bottom, near, far) {
+			var te = this.elements;
+			var w = 1.0 / (right - left);
+			var h = 1.0 / (top - bottom);
+			var p = 1.0 / (far - near);
+			var x = (right + left) * w;
+			var y = (top + bottom) * h;
+			var z = (far + near) * p;
+			te[0] = 2 * w;
+			te[4] = 0;
+			te[8] = 0;
+			te[12] = -x;
+			te[1] = 0;
+			te[5] = 2 * h;
+			te[9] = 0;
+			te[13] = -y;
+			te[2] = 0;
+			te[6] = 0;
+			te[10] = -2 * p;
+			te[14] = -z;
+			te[3] = 0;
+			te[7] = 0;
+			te[11] = 0;
+			te[15] = 1;
+			return this;
+		};
+
+		_proto.equals = function equals(matrix) {
+			var te = this.elements;
+			var me = matrix.elements;
+
+			for (var i = 0; i < 16; i++) {
+				if (te[i] !== me[i]) return false;
+			}
+
+			return true;
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			for (var i = 0; i < 16; i++) {
+				this.elements[i] = array[i + offset];
+			}
+
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			var te = this.elements;
+			array[offset] = te[0];
+			array[offset + 1] = te[1];
+			array[offset + 2] = te[2];
+			array[offset + 3] = te[3];
+			array[offset + 4] = te[4];
+			array[offset + 5] = te[5];
+			array[offset + 6] = te[6];
+			array[offset + 7] = te[7];
+			array[offset + 8] = te[8];
+			array[offset + 9] = te[9];
+			array[offset + 10] = te[10];
+			array[offset + 11] = te[11];
+			array[offset + 12] = te[12];
+			array[offset + 13] = te[13];
+			array[offset + 14] = te[14];
+			array[offset + 15] = te[15];
+			return array;
+		};
+
+		return Matrix4;
+	}();
+
+	Matrix4.prototype.isMatrix4 = true;
+
+	var _v1$1 = /*@__PURE__*/new Vector3();
+
+	var _m1 = /*@__PURE__*/new Matrix4();
+
+	var _zero = /*@__PURE__*/new Vector3(0, 0, 0);
+
+	var _one = /*@__PURE__*/new Vector3(1, 1, 1);
+
+	var _x = /*@__PURE__*/new Vector3();
+
+	var _y = /*@__PURE__*/new Vector3();
+
+	var _z = /*@__PURE__*/new Vector3();
+
+	var _matrix = /*@__PURE__*/new Matrix4();
+
+	var _quaternion$1 = /*@__PURE__*/new Quaternion();
+
+	var Euler = /*#__PURE__*/function () {
+		function Euler(x, y, z, order) {
+			if (x === void 0) {
+				x = 0;
+			}
+
+			if (y === void 0) {
+				y = 0;
+			}
+
+			if (z === void 0) {
+				z = 0;
+			}
+
+			if (order === void 0) {
+				order = Euler.DefaultOrder;
+			}
+
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._order = order;
+		}
+
+		var _proto = Euler.prototype;
+
+		_proto.set = function set(x, y, z, order) {
+			this._x = x;
+			this._y = y;
+			this._z = z;
+			this._order = order || this._order;
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor(this._x, this._y, this._z, this._order);
+		};
+
+		_proto.copy = function copy(euler) {
+			this._x = euler._x;
+			this._y = euler._y;
+			this._z = euler._z;
+			this._order = euler._order;
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.setFromRotationMatrix = function setFromRotationMatrix(m, order, update) {
+			var clamp = MathUtils.clamp; // assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+			var te = m.elements;
+			var m11 = te[0],
+					m12 = te[4],
+					m13 = te[8];
+			var m21 = te[1],
+					m22 = te[5],
+					m23 = te[9];
+			var m31 = te[2],
+					m32 = te[6],
+					m33 = te[10];
+			order = order || this._order;
+
+			switch (order) {
+				case 'XYZ':
+					this._y = Math.asin(clamp(m13, -1, 1));
+
+					if (Math.abs(m13) < 0.9999999) {
+						this._x = Math.atan2(-m23, m33);
+						this._z = Math.atan2(-m12, m11);
+					} else {
+						this._x = Math.atan2(m32, m22);
+						this._z = 0;
+					}
+
+					break;
+
+				case 'YXZ':
+					this._x = Math.asin(-clamp(m23, -1, 1));
+
+					if (Math.abs(m23) < 0.9999999) {
+						this._y = Math.atan2(m13, m33);
+						this._z = Math.atan2(m21, m22);
+					} else {
+						this._y = Math.atan2(-m31, m11);
+						this._z = 0;
+					}
+
+					break;
+
+				case 'ZXY':
+					this._x = Math.asin(clamp(m32, -1, 1));
+
+					if (Math.abs(m32) < 0.9999999) {
+						this._y = Math.atan2(-m31, m33);
+						this._z = Math.atan2(-m12, m22);
+					} else {
+						this._y = 0;
+						this._z = Math.atan2(m21, m11);
+					}
+
+					break;
+
+				case 'ZYX':
+					this._y = Math.asin(-clamp(m31, -1, 1));
+
+					if (Math.abs(m31) < 0.9999999) {
+						this._x = Math.atan2(m32, m33);
+						this._z = Math.atan2(m21, m11);
+					} else {
+						this._x = 0;
+						this._z = Math.atan2(-m12, m22);
+					}
+
+					break;
+
+				case 'YZX':
+					this._z = Math.asin(clamp(m21, -1, 1));
+
+					if (Math.abs(m21) < 0.9999999) {
+						this._x = Math.atan2(-m23, m22);
+						this._y = Math.atan2(-m31, m11);
+					} else {
+						this._x = 0;
+						this._y = Math.atan2(m13, m33);
+					}
+
+					break;
+
+				case 'XZY':
+					this._z = Math.asin(-clamp(m12, -1, 1));
+
+					if (Math.abs(m12) < 0.9999999) {
+						this._x = Math.atan2(m32, m22);
+						this._y = Math.atan2(m13, m11);
+					} else {
+						this._x = Math.atan2(-m23, m33);
+						this._y = 0;
+					}
+
+					break;
+
+				default:
+					console.warn('THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order);
+			}
+
+			this._order = order;
+			if (update !== false) this._onChangeCallback();
+			return this;
+		};
+
+		_proto.setFromQuaternion = function setFromQuaternion(q, order, update) {
+			_matrix.makeRotationFromQuaternion(q);
+
+			return this.setFromRotationMatrix(_matrix, order, update);
+		};
+
+		_proto.setFromVector3 = function setFromVector3(v, order) {
+			return this.set(v.x, v.y, v.z, order || this._order);
+		};
+
+		_proto.reorder = function reorder(newOrder) {
+			// WARNING: this discards revolution information -bhouston
+			_quaternion$1.setFromEuler(this);
+
+			return this.setFromQuaternion(_quaternion$1, newOrder);
+		};
+
+		_proto.equals = function equals(euler) {
+			return euler._x === this._x && euler._y === this._y && euler._z === this._z && euler._order === this._order;
+		};
+
+		_proto.fromArray = function fromArray(array) {
+			this._x = array[0];
+			this._y = array[1];
+			this._z = array[2];
+			if (array[3] !== undefined) this._order = array[3];
+
+			this._onChangeCallback();
+
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			array[offset] = this._x;
+			array[offset + 1] = this._y;
+			array[offset + 2] = this._z;
+			array[offset + 3] = this._order;
+			return array;
+		};
+
+		_proto.toVector3 = function toVector3(optionalResult) {
+			if (optionalResult) {
+				return optionalResult.set(this._x, this._y, this._z);
+			} else {
+				return new Vector3(this._x, this._y, this._z);
+			}
+		};
+
+		_proto._onChange = function _onChange(callback) {
+			this._onChangeCallback = callback;
+			return this;
+		};
+
+		_proto._onChangeCallback = function _onChangeCallback() {};
+
+		_createClass(Euler, [{
+			key: "x",
+			get: function get() {
+				return this._x;
+			},
+			set: function set(value) {
+				this._x = value;
+
+				this._onChangeCallback();
+			}
+		}, {
+			key: "y",
+			get: function get() {
+				return this._y;
+			},
+			set: function set(value) {
+				this._y = value;
+
+				this._onChangeCallback();
+			}
+		}, {
+			key: "z",
+			get: function get() {
+				return this._z;
+			},
+			set: function set(value) {
+				this._z = value;
+
+				this._onChangeCallback();
+			}
+		}, {
+			key: "order",
+			get: function get() {
+				return this._order;
+			},
+			set: function set(value) {
+				this._order = value;
+
+				this._onChangeCallback();
+			}
+		}]);
+
+		return Euler;
+	}();
+
+	Euler.prototype.isEuler = true;
+	Euler.DefaultOrder = 'XYZ';
+	Euler.RotationOrders = ['XYZ', 'YZX', 'ZXY', 'XZY', 'YXZ', 'ZYX'];
+
+	var Layers = /*#__PURE__*/function () {
+		function Layers() {
+			this.mask = 1 | 0;
+		}
+
+		var _proto = Layers.prototype;
+
+		_proto.set = function set(channel) {
+			this.mask = 1 << channel | 0;
+		};
+
+		_proto.enable = function enable(channel) {
+			this.mask |= 1 << channel | 0;
+		};
+
+		_proto.enableAll = function enableAll() {
+			this.mask = 0xffffffff | 0;
+		};
+
+		_proto.toggle = function toggle(channel) {
+			this.mask ^= 1 << channel | 0;
+		};
+
+		_proto.disable = function disable(channel) {
+			this.mask &= ~(1 << channel | 0);
+		};
+
+		_proto.disableAll = function disableAll() {
+			this.mask = 0;
+		};
+
+		_proto.test = function test(layers) {
+			return (this.mask & layers.mask) !== 0;
+		};
+
+		return Layers;
+	}();
+
+	var _object3DId = 0;
+
+	var _v1$2 = new Vector3();
+
+	var _q1 = new Quaternion();
+
+	var _m1$1 = new Matrix4();
+
+	var _target = new Vector3();
+
+	var _position = new Vector3();
+
+	var _scale = new Vector3();
+
+	var _quaternion$2 = new Quaternion();
+
+	var _xAxis = new Vector3(1, 0, 0);
+
+	var _yAxis = new Vector3(0, 1, 0);
+
+	var _zAxis = new Vector3(0, 0, 1);
+
+	var _addedEvent = {
+		type: 'added'
+	};
+	var _removedEvent = {
+		type: 'removed'
+	};
+
+	function Object3D() {
+		Object.defineProperty(this, 'id', {
+			value: _object3DId++
+		});
+		this.uuid = MathUtils.generateUUID();
+		this.name = '';
+		this.type = 'Object3D';
+		this.parent = null;
+		this.children = [];
+		this.up = Object3D.DefaultUp.clone();
+		var position = new Vector3();
+		var rotation = new Euler();
+		var quaternion = new Quaternion();
+		var scale = new Vector3(1, 1, 1);
+
+		function onRotationChange() {
+			quaternion.setFromEuler(rotation, false);
+		}
+
+		function onQuaternionChange() {
+			rotation.setFromQuaternion(quaternion, undefined, false);
+		}
+
+		rotation._onChange(onRotationChange);
+
+		quaternion._onChange(onQuaternionChange);
+
+		Object.defineProperties(this, {
+			position: {
+				configurable: true,
+				enumerable: true,
+				value: position
+			},
+			rotation: {
+				configurable: true,
+				enumerable: true,
+				value: rotation
+			},
+			quaternion: {
+				configurable: true,
+				enumerable: true,
+				value: quaternion
+			},
+			scale: {
+				configurable: true,
+				enumerable: true,
+				value: scale
+			},
+			modelViewMatrix: {
+				value: new Matrix4()
+			},
+			normalMatrix: {
+				value: new Matrix3()
+			}
+		});
+		this.matrix = new Matrix4();
+		this.matrixWorld = new Matrix4();
+		this.matrixAutoUpdate = Object3D.DefaultMatrixAutoUpdate;
+		this.matrixWorldNeedsUpdate = false;
+		this.layers = new Layers();
+		this.visible = true;
+		this.castShadow = false;
+		this.receiveShadow = false;
+		this.frustumCulled = true;
+		this.renderOrder = 0;
+		this.animations = [];
+		this.userData = {};
+	}
+
+	Object3D.DefaultUp = new Vector3(0, 1, 0);
+	Object3D.DefaultMatrixAutoUpdate = true;
+	Object3D.prototype = Object.assign(Object.create(EventDispatcher.prototype), {
+		constructor: Object3D,
+		isObject3D: true,
+		onBeforeRender: function onBeforeRender() {},
+		onAfterRender: function onAfterRender() {},
+		applyMatrix4: function applyMatrix4(matrix) {
+			if (this.matrixAutoUpdate) this.updateMatrix();
+			this.matrix.premultiply(matrix);
+			this.matrix.decompose(this.position, this.quaternion, this.scale);
+		},
+		applyQuaternion: function applyQuaternion(q) {
+			this.quaternion.premultiply(q);
+			return this;
+		},
+		setRotationFromAxisAngle: function setRotationFromAxisAngle(axis, angle) {
+			// assumes axis is normalized
+			this.quaternion.setFromAxisAngle(axis, angle);
+		},
+		setRotationFromEuler: function setRotationFromEuler(euler) {
+			this.quaternion.setFromEuler(euler, true);
+		},
+		setRotationFromMatrix: function setRotationFromMatrix(m) {
+			// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+			this.quaternion.setFromRotationMatrix(m);
+		},
+		setRotationFromQuaternion: function setRotationFromQuaternion(q) {
+			// assumes q is normalized
+			this.quaternion.copy(q);
+		},
+		rotateOnAxis: function rotateOnAxis(axis, angle) {
+			// rotate object on axis in object space
+			// axis is assumed to be normalized
+			_q1.setFromAxisAngle(axis, angle);
+
+			this.quaternion.multiply(_q1);
+			return this;
+		},
+		rotateOnWorldAxis: function rotateOnWorldAxis(axis, angle) {
+			// rotate object on axis in world space
+			// axis is assumed to be normalized
+			// method assumes no rotated parent
+			_q1.setFromAxisAngle(axis, angle);
+
+			this.quaternion.premultiply(_q1);
+			return this;
+		},
+		rotateX: function rotateX(angle) {
+			return this.rotateOnAxis(_xAxis, angle);
+		},
+		rotateY: function rotateY(angle) {
+			return this.rotateOnAxis(_yAxis, angle);
+		},
+		rotateZ: function rotateZ(angle) {
+			return this.rotateOnAxis(_zAxis, angle);
+		},
+		translateOnAxis: function translateOnAxis(axis, distance) {
+			// translate object by distance along axis in object space
+			// axis is assumed to be normalized
+			_v1$2.copy(axis).applyQuaternion(this.quaternion);
+
+			this.position.add(_v1$2.multiplyScalar(distance));
+			return this;
+		},
+		translateX: function translateX(distance) {
+			return this.translateOnAxis(_xAxis, distance);
+		},
+		translateY: function translateY(distance) {
+			return this.translateOnAxis(_yAxis, distance);
+		},
+		translateZ: function translateZ(distance) {
+			return this.translateOnAxis(_zAxis, distance);
+		},
+		localToWorld: function localToWorld(vector) {
+			return vector.applyMatrix4(this.matrixWorld);
+		},
+		worldToLocal: function worldToLocal(vector) {
+			return vector.applyMatrix4(_m1$1.copy(this.matrixWorld).invert());
+		},
+		lookAt: function lookAt(x, y, z) {
+			// This method does not support objects having non-uniformly-scaled parent(s)
+			if (x.isVector3) {
+				_target.copy(x);
+			} else {
+				_target.set(x, y, z);
+			}
+
+			var parent = this.parent;
+			this.updateWorldMatrix(true, false);
+
+			_position.setFromMatrixPosition(this.matrixWorld);
+
+			if (this.isCamera || this.isLight) {
+				_m1$1.lookAt(_position, _target, this.up);
+			} else {
+				_m1$1.lookAt(_target, _position, this.up);
+			}
+
+			this.quaternion.setFromRotationMatrix(_m1$1);
+
+			if (parent) {
+				_m1$1.extractRotation(parent.matrixWorld);
+
+				_q1.setFromRotationMatrix(_m1$1);
+
+				this.quaternion.premultiply(_q1.invert());
+			}
+		},
+		add: function add(object) {
+			if (arguments.length > 1) {
+				for (var i = 0; i < arguments.length; i++) {
+					this.add(arguments[i]);
+				}
+
+				return this;
+			}
+
+			if (object === this) {
+				console.error('THREE.Object3D.add: object can\'t be added as a child of itself.', object);
+				return this;
+			}
+
+			if (object && object.isObject3D) {
+				if (object.parent !== null) {
+					object.parent.remove(object);
+				}
+
+				object.parent = this;
+				this.children.push(object);
+				object.dispatchEvent(_addedEvent);
+			} else {
+				console.error('THREE.Object3D.add: object not an instance of THREE.Object3D.', object);
+			}
+
+			return this;
+		},
+		remove: function remove(object) {
+			if (arguments.length > 1) {
+				for (var i = 0; i < arguments.length; i++) {
+					this.remove(arguments[i]);
+				}
+
+				return this;
+			}
+
+			var index = this.children.indexOf(object);
+
+			if (index !== -1) {
+				object.parent = null;
+				this.children.splice(index, 1);
+				object.dispatchEvent(_removedEvent);
+			}
+
+			return this;
+		},
+		clear: function clear() {
+			for (var i = 0; i < this.children.length; i++) {
+				var object = this.children[i];
+				object.parent = null;
+				object.dispatchEvent(_removedEvent);
+			}
+
+			this.children.length = 0;
+			return this;
+		},
+		attach: function attach(object) {
+			// adds object as a child of this, while maintaining the object's world transform
+			this.updateWorldMatrix(true, false);
+
+			_m1$1.copy(this.matrixWorld).invert();
+
+			if (object.parent !== null) {
+				object.parent.updateWorldMatrix(true, false);
+
+				_m1$1.multiply(object.parent.matrixWorld);
+			}
+
+			object.applyMatrix4(_m1$1);
+			this.add(object);
+			object.updateWorldMatrix(false, true);
+			return this;
+		},
+		getObjectById: function getObjectById(id) {
+			return this.getObjectByProperty('id', id);
+		},
+		getObjectByName: function getObjectByName(name) {
+			return this.getObjectByProperty('name', name);
+		},
+		getObjectByProperty: function getObjectByProperty(name, value) {
+			if (this[name] === value) return this;
+
+			for (var i = 0, l = this.children.length; i < l; i++) {
+				var child = this.children[i];
+				var object = child.getObjectByProperty(name, value);
+
+				if (object !== undefined) {
+					return object;
+				}
+			}
+
+			return undefined;
+		},
+		getWorldPosition: function getWorldPosition(target) {
+			if (target === undefined) {
+				console.warn('THREE.Object3D: .getWorldPosition() target is now required');
+				target = new Vector3();
+			}
+
+			this.updateWorldMatrix(true, false);
+			return target.setFromMatrixPosition(this.matrixWorld);
+		},
+		getWorldQuaternion: function getWorldQuaternion(target) {
+			if (target === undefined) {
+				console.warn('THREE.Object3D: .getWorldQuaternion() target is now required');
+				target = new Quaternion();
+			}
+
+			this.updateWorldMatrix(true, false);
+			this.matrixWorld.decompose(_position, target, _scale);
+			return target;
+		},
+		getWorldScale: function getWorldScale(target) {
+			if (target === undefined) {
+				console.warn('THREE.Object3D: .getWorldScale() target is now required');
+				target = new Vector3();
+			}
+
+			this.updateWorldMatrix(true, false);
+			this.matrixWorld.decompose(_position, _quaternion$2, target);
+			return target;
+		},
+		getWorldDirection: function getWorldDirection(target) {
+			if (target === undefined) {
+				console.warn('THREE.Object3D: .getWorldDirection() target is now required');
+				target = new Vector3();
+			}
+
+			this.updateWorldMatrix(true, false);
+			var e = this.matrixWorld.elements;
+			return target.set(e[8], e[9], e[10]).normalize();
+		},
+		raycast: function raycast() {},
+		traverse: function traverse(callback) {
+			callback(this);
+			var children = this.children;
+
+			for (var i = 0, l = children.length; i < l; i++) {
+				children[i].traverse(callback);
+			}
+		},
+		traverseVisible: function traverseVisible(callback) {
+			if (this.visible === false) return;
+			callback(this);
+			var children = this.children;
+
+			for (var i = 0, l = children.length; i < l; i++) {
+				children[i].traverseVisible(callback);
+			}
+		},
+		traverseAncestors: function traverseAncestors(callback) {
+			var parent = this.parent;
+
+			if (parent !== null) {
+				callback(parent);
+				parent.traverseAncestors(callback);
+			}
+		},
+		updateMatrix: function updateMatrix() {
+			this.matrix.compose(this.position, this.quaternion, this.scale);
+			this.matrixWorldNeedsUpdate = true;
+		},
+		updateMatrixWorld: function updateMatrixWorld(force) {
+			if (this.matrixAutoUpdate) this.updateMatrix();
+
+			if (this.matrixWorldNeedsUpdate || force) {
+				if (this.parent === null) {
+					this.matrixWorld.copy(this.matrix);
+				} else {
+					this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
+				}
+
+				this.matrixWorldNeedsUpdate = false;
+				force = true;
+			} // update children
+
+
+			var children = this.children;
+
+			for (var i = 0, l = children.length; i < l; i++) {
+				children[i].updateMatrixWorld(force);
+			}
+		},
+		updateWorldMatrix: function updateWorldMatrix(updateParents, updateChildren) {
+			var parent = this.parent;
+
+			if (updateParents === true && parent !== null) {
+				parent.updateWorldMatrix(true, false);
+			}
+
+			if (this.matrixAutoUpdate) this.updateMatrix();
+
+			if (this.parent === null) {
+				this.matrixWorld.copy(this.matrix);
+			} else {
+				this.matrixWorld.multiplyMatrices(this.parent.matrixWorld, this.matrix);
+			} // update children
+
+
+			if (updateChildren === true) {
+				var children = this.children;
+
+				for (var i = 0, l = children.length; i < l; i++) {
+					children[i].updateWorldMatrix(false, true);
+				}
+			}
+		},
+		toJSON: function toJSON(meta) {
+			// meta is a string when called from JSON.stringify
+			var isRootObject = meta === undefined || typeof meta === 'string';
+			var output = {}; // meta is a hash used to collect geometries, materials.
+			// not providing it implies that this is the root object
+			// being serialized.
+
+			if (isRootObject) {
+				// initialize meta obj
+				meta = {
+					geometries: {},
+					materials: {},
+					textures: {},
+					images: {},
+					shapes: {},
+					skeletons: {},
+					animations: {}
+				};
+				output.metadata = {
+					version: 4.5,
+					type: 'Object',
+					generator: 'Object3D.toJSON'
+				};
+			} // standard Object3D serialization
+
+
+			var object = {};
+			object.uuid = this.uuid;
+			object.type = this.type;
+			if (this.name !== '') object.name = this.name;
+			if (this.castShadow === true) object.castShadow = true;
+			if (this.receiveShadow === true) object.receiveShadow = true;
+			if (this.visible === false) object.visible = false;
+			if (this.frustumCulled === false) object.frustumCulled = false;
+			if (this.renderOrder !== 0) object.renderOrder = this.renderOrder;
+			if (JSON.stringify(this.userData) !== '{}') object.userData = this.userData;
+			object.layers = this.layers.mask;
+			object.matrix = this.matrix.toArray();
+			if (this.matrixAutoUpdate === false) object.matrixAutoUpdate = false; // object specific properties
+
+			if (this.isInstancedMesh) {
+				object.type = 'InstancedMesh';
+				object.count = this.count;
+				object.instanceMatrix = this.instanceMatrix.toJSON();
+			} //
+
+
+			function serialize(library, element) {
+				if (library[element.uuid] === undefined) {
+					library[element.uuid] = element.toJSON(meta);
+				}
+
+				return element.uuid;
+			}
+
+			if (this.isMesh || this.isLine || this.isPoints) {
+				object.geometry = serialize(meta.geometries, this.geometry);
+				var parameters = this.geometry.parameters;
+
+				if (parameters !== undefined && parameters.shapes !== undefined) {
+					var shapes = parameters.shapes;
+
+					if (Array.isArray(shapes)) {
+						for (var i = 0, l = shapes.length; i < l; i++) {
+							var shape = shapes[i];
+							serialize(meta.shapes, shape);
+						}
+					} else {
+						serialize(meta.shapes, shapes);
+					}
+				}
+			}
+
+			if (this.isSkinnedMesh) {
+				object.bindMode = this.bindMode;
+				object.bindMatrix = this.bindMatrix.toArray();
+
+				if (this.skeleton !== undefined) {
+					serialize(meta.skeletons, this.skeleton);
+					object.skeleton = this.skeleton.uuid;
+				}
+			}
+
+			if (this.material !== undefined) {
+				if (Array.isArray(this.material)) {
+					var uuids = [];
+
+					for (var _i = 0, _l = this.material.length; _i < _l; _i++) {
+						uuids.push(serialize(meta.materials, this.material[_i]));
+					}
+
+					object.material = uuids;
+				} else {
+					object.material = serialize(meta.materials, this.material);
+				}
+			} //
+
+
+			if (this.children.length > 0) {
+				object.children = [];
+
+				for (var _i2 = 0; _i2 < this.children.length; _i2++) {
+					object.children.push(this.children[_i2].toJSON(meta).object);
+				}
+			} //
+
+
+			if (this.animations.length > 0) {
+				object.animations = [];
+
+				for (var _i3 = 0; _i3 < this.animations.length; _i3++) {
+					var animation = this.animations[_i3];
+					object.animations.push(serialize(meta.animations, animation));
+				}
+			}
+
+			if (isRootObject) {
+				var geometries = extractFromCache(meta.geometries);
+				var materials = extractFromCache(meta.materials);
+				var textures = extractFromCache(meta.textures);
+				var images = extractFromCache(meta.images);
+
+				var _shapes = extractFromCache(meta.shapes);
+
+				var skeletons = extractFromCache(meta.skeletons);
+				var animations = extractFromCache(meta.animations);
+				if (geometries.length > 0) output.geometries = geometries;
+				if (materials.length > 0) output.materials = materials;
+				if (textures.length > 0) output.textures = textures;
+				if (images.length > 0) output.images = images;
+				if (_shapes.length > 0) output.shapes = _shapes;
+				if (skeletons.length > 0) output.skeletons = skeletons;
+				if (animations.length > 0) output.animations = animations;
+			}
+
+			output.object = object;
+			return output; // extract data from the cache hash
+			// remove metadata on each item
+			// and return as array
+
+			function extractFromCache(cache) {
+				var values = [];
+
+				for (var key in cache) {
+					var data = cache[key];
+					delete data.metadata;
+					values.push(data);
+				}
+
+				return values;
+			}
+		},
+		clone: function clone(recursive) {
+			return new this.constructor().copy(this, recursive);
+		},
+		copy: function copy(source, recursive) {
+			if (recursive === void 0) {
+				recursive = true;
+			}
+
+			this.name = source.name;
+			this.up.copy(source.up);
+			this.position.copy(source.position);
+			this.rotation.order = source.rotation.order;
+			this.quaternion.copy(source.quaternion);
+			this.scale.copy(source.scale);
+			this.matrix.copy(source.matrix);
+			this.matrixWorld.copy(source.matrixWorld);
+			this.matrixAutoUpdate = source.matrixAutoUpdate;
+			this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
+			this.layers.mask = source.layers.mask;
+			this.visible = source.visible;
+			this.castShadow = source.castShadow;
+			this.receiveShadow = source.receiveShadow;
+			this.frustumCulled = source.frustumCulled;
+			this.renderOrder = source.renderOrder;
+			this.userData = JSON.parse(JSON.stringify(source.userData));
+
+			if (recursive === true) {
+				for (var i = 0; i < source.children.length; i++) {
+					var child = source.children[i];
+					this.add(child.clone());
+				}
+			}
+
+			return this;
+		}
+	});
+
+	var _vector1 = /*@__PURE__*/new Vector3();
+
+	var _vector2 = /*@__PURE__*/new Vector3();
+
+	var _normalMatrix = /*@__PURE__*/new Matrix3();
+
+	var Plane = /*#__PURE__*/function () {
+		function Plane(normal, constant) {
+			if (normal === void 0) {
+				normal = new Vector3(1, 0, 0);
+			}
+
+			if (constant === void 0) {
+				constant = 0;
+			}
+
+			// normal is assumed to be normalized
+			this.normal = normal;
+			this.constant = constant;
+		}
+
+		var _proto = Plane.prototype;
+
+		_proto.set = function set(normal, constant) {
+			this.normal.copy(normal);
+			this.constant = constant;
+			return this;
+		};
+
+		_proto.setComponents = function setComponents(x, y, z, w) {
+			this.normal.set(x, y, z);
+			this.constant = w;
+			return this;
+		};
+
+		_proto.setFromNormalAndCoplanarPoint = function setFromNormalAndCoplanarPoint(normal, point) {
+			this.normal.copy(normal);
+			this.constant = -point.dot(this.normal);
+			return this;
+		};
+
+		_proto.setFromCoplanarPoints = function setFromCoplanarPoints(a, b, c) {
+			var normal = _vector1.subVectors(c, b).cross(_vector2.subVectors(a, b)).normalize(); // Q: should an error be thrown if normal is zero (e.g. degenerate plane)?
+
+
+			this.setFromNormalAndCoplanarPoint(normal, a);
+			return this;
+		};
+
+		_proto.copy = function copy(plane) {
+			this.normal.copy(plane.normal);
+			this.constant = plane.constant;
+			return this;
+		};
+
+		_proto.normalize = function normalize() {
+			// Note: will lead to a divide by zero if the plane is invalid.
+			var inverseNormalLength = 1.0 / this.normal.length();
+			this.normal.multiplyScalar(inverseNormalLength);
+			this.constant *= inverseNormalLength;
+			return this;
+		};
+
+		_proto.negate = function negate() {
+			this.constant *= -1;
+			this.normal.negate();
+			return this;
+		};
+
+		_proto.distanceToPoint = function distanceToPoint(point) {
+			return this.normal.dot(point) + this.constant;
+		};
+
+		_proto.distanceToSphere = function distanceToSphere(sphere) {
+			return this.distanceToPoint(sphere.center) - sphere.radius;
+		};
+
+		_proto.projectPoint = function projectPoint(point, target) {
+			if (target === undefined) {
+				console.warn('THREE.Plane: .projectPoint() target is now required');
+				target = new Vector3();
+			}
+
+			return target.copy(this.normal).multiplyScalar(-this.distanceToPoint(point)).add(point);
+		};
+
+		_proto.intersectLine = function intersectLine(line, target) {
+			if (target === undefined) {
+				console.warn('THREE.Plane: .intersectLine() target is now required');
+				target = new Vector3();
+			}
+
+			var direction = line.delta(_vector1);
+			var denominator = this.normal.dot(direction);
+
+			if (denominator === 0) {
+				// line is coplanar, return origin
+				if (this.distanceToPoint(line.start) === 0) {
+					return target.copy(line.start);
+				} // Unsure if this is the correct method to handle this case.
+
+
+				return undefined;
+			}
+
+			var t = -(line.start.dot(this.normal) + this.constant) / denominator;
+
+			if (t < 0 || t > 1) {
+				return undefined;
+			}
+
+			return target.copy(direction).multiplyScalar(t).add(line.start);
+		};
+
+		_proto.intersectsLine = function intersectsLine(line) {
+			// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.
+			var startSign = this.distanceToPoint(line.start);
+			var endSign = this.distanceToPoint(line.end);
+			return startSign < 0 && endSign > 0 || endSign < 0 && startSign > 0;
+		};
+
+		_proto.intersectsBox = function intersectsBox(box) {
+			return box.intersectsPlane(this);
+		};
+
+		_proto.intersectsSphere = function intersectsSphere(sphere) {
+			return sphere.intersectsPlane(this);
+		};
+
+		_proto.coplanarPoint = function coplanarPoint(target) {
+			if (target === undefined) {
+				console.warn('THREE.Plane: .coplanarPoint() target is now required');
+				target = new Vector3();
+			}
+
+			return target.copy(this.normal).multiplyScalar(-this.constant);
+		};
+
+		_proto.applyMatrix4 = function applyMatrix4(matrix, optionalNormalMatrix) {
+			var normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix(matrix);
+
+			var referencePoint = this.coplanarPoint(_vector1).applyMatrix4(matrix);
+			var normal = this.normal.applyMatrix3(normalMatrix).normalize();
+			this.constant = -referencePoint.dot(normal);
+			return this;
+		};
+
+		_proto.translate = function translate(offset) {
+			this.constant -= offset.dot(this.normal);
+			return this;
+		};
+
+		_proto.equals = function equals(plane) {
+			return plane.normal.equals(this.normal) && plane.constant === this.constant;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		return Plane;
+	}();
+
+	Plane.prototype.isPlane = true;
+
+	var _v0$1 = /*@__PURE__*/new Vector3();
+
+	var _v1$3 = /*@__PURE__*/new Vector3();
+
+	var _v2$1 = /*@__PURE__*/new Vector3();
+
+	var _v3 = /*@__PURE__*/new Vector3();
+
+	var _vab = /*@__PURE__*/new Vector3();
+
+	var _vac = /*@__PURE__*/new Vector3();
+
+	var _vbc = /*@__PURE__*/new Vector3();
+
+	var _vap = /*@__PURE__*/new Vector3();
+
+	var _vbp = /*@__PURE__*/new Vector3();
+
+	var _vcp = /*@__PURE__*/new Vector3();
+
+	var Triangle = /*#__PURE__*/function () {
+		function Triangle(a, b, c) {
+			if (a === void 0) {
+				a = new Vector3();
+			}
+
+			if (b === void 0) {
+				b = new Vector3();
+			}
+
+			if (c === void 0) {
+				c = new Vector3();
+			}
+
+			this.a = a;
+			this.b = b;
+			this.c = c;
+		}
+
+		Triangle.getNormal = function getNormal(a, b, c, target) {
+			if (target === undefined) {
+				console.warn('THREE.Triangle: .getNormal() target is now required');
+				target = new Vector3();
+			}
+
+			target.subVectors(c, b);
+
+			_v0$1.subVectors(a, b);
+
+			target.cross(_v0$1);
+			var targetLengthSq = target.lengthSq();
+
+			if (targetLengthSq > 0) {
+				return target.multiplyScalar(1 / Math.sqrt(targetLengthSq));
+			}
+
+			return target.set(0, 0, 0);
+		} // static/instance method to calculate barycentric coordinates
+		// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
+		;
+
+		Triangle.getBarycoord = function getBarycoord(point, a, b, c, target) {
+			_v0$1.subVectors(c, a);
+
+			_v1$3.subVectors(b, a);
+
+			_v2$1.subVectors(point, a);
+
+			var dot00 = _v0$1.dot(_v0$1);
+
+			var dot01 = _v0$1.dot(_v1$3);
+
+			var dot02 = _v0$1.dot(_v2$1);
+
+			var dot11 = _v1$3.dot(_v1$3);
+
+			var dot12 = _v1$3.dot(_v2$1);
+
+			var denom = dot00 * dot11 - dot01 * dot01;
+
+			if (target === undefined) {
+				console.warn('THREE.Triangle: .getBarycoord() target is now required');
+				target = new Vector3();
+			} // collinear or singular triangle
+
+
+			if (denom === 0) {
+				// arbitrary location outside of triangle?
+				// not sure if this is the best idea, maybe should be returning undefined
+				return target.set(-2, -1, -1);
+			}
+
+			var invDenom = 1 / denom;
+			var u = (dot11 * dot02 - dot01 * dot12) * invDenom;
+			var v = (dot00 * dot12 - dot01 * dot02) * invDenom; // barycentric coordinates must always sum to 1
+
+			return target.set(1 - u - v, v, u);
+		};
+
+		Triangle.containsPoint = function containsPoint(point, a, b, c) {
+			this.getBarycoord(point, a, b, c, _v3);
+			return _v3.x >= 0 && _v3.y >= 0 && _v3.x + _v3.y <= 1;
+		};
+
+		Triangle.getUV = function getUV(point, p1, p2, p3, uv1, uv2, uv3, target) {
+			this.getBarycoord(point, p1, p2, p3, _v3);
+			target.set(0, 0);
+			target.addScaledVector(uv1, _v3.x);
+			target.addScaledVector(uv2, _v3.y);
+			target.addScaledVector(uv3, _v3.z);
+			return target;
+		};
+
+		Triangle.isFrontFacing = function isFrontFacing(a, b, c, direction) {
+			_v0$1.subVectors(c, b);
+
+			_v1$3.subVectors(a, b); // strictly front facing
+
+
+			return _v0$1.cross(_v1$3).dot(direction) < 0 ? true : false;
+		};
+
+		var _proto = Triangle.prototype;
+
+		_proto.set = function set(a, b, c) {
+			this.a.copy(a);
+			this.b.copy(b);
+			this.c.copy(c);
+			return this;
+		};
+
+		_proto.setFromPointsAndIndices = function setFromPointsAndIndices(points, i0, i1, i2) {
+			this.a.copy(points[i0]);
+			this.b.copy(points[i1]);
+			this.c.copy(points[i2]);
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		_proto.copy = function copy(triangle) {
+			this.a.copy(triangle.a);
+			this.b.copy(triangle.b);
+			this.c.copy(triangle.c);
+			return this;
+		};
+
+		_proto.getArea = function getArea() {
+			_v0$1.subVectors(this.c, this.b);
+
+			_v1$3.subVectors(this.a, this.b);
+
+			return _v0$1.cross(_v1$3).length() * 0.5;
+		};
+
+		_proto.getMidpoint = function getMidpoint(target) {
+			if (target === undefined) {
+				console.warn('THREE.Triangle: .getMidpoint() target is now required');
+				target = new Vector3();
+			}
+
+			return target.addVectors(this.a, this.b).add(this.c).multiplyScalar(1 / 3);
+		};
+
+		_proto.getNormal = function getNormal(target) {
+			return Triangle.getNormal(this.a, this.b, this.c, target);
+		};
+
+		_proto.getPlane = function getPlane(target) {
+			if (target === undefined) {
+				console.warn('THREE.Triangle: .getPlane() target is now required');
+				target = new Plane();
+			}
+
+			return target.setFromCoplanarPoints(this.a, this.b, this.c);
+		};
+
+		_proto.getBarycoord = function getBarycoord(point, target) {
+			return Triangle.getBarycoord(point, this.a, this.b, this.c, target);
+		};
+
+		_proto.getUV = function getUV(point, uv1, uv2, uv3, target) {
+			return Triangle.getUV(point, this.a, this.b, this.c, uv1, uv2, uv3, target);
+		};
+
+		_proto.containsPoint = function containsPoint(point) {
+			return Triangle.containsPoint(point, this.a, this.b, this.c);
+		};
+
+		_proto.isFrontFacing = function isFrontFacing(direction) {
+			return Triangle.isFrontFacing(this.a, this.b, this.c, direction);
+		};
+
+		_proto.intersectsBox = function intersectsBox(box) {
+			return box.intersectsTriangle(this);
+		};
+
+		_proto.closestPointToPoint = function closestPointToPoint(p, target) {
+			if (target === undefined) {
+				console.warn('THREE.Triangle: .closestPointToPoint() target is now required');
+				target = new Vector3();
+			}
+
+			var a = this.a,
+					b = this.b,
+					c = this.c;
+			var v, w; // algorithm thanks to Real-Time Collision Detection by Christer Ericson,
+			// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
+			// under the accompanying license; see chapter 5.1.5 for detailed explanation.
+			// basically, we're distinguishing which of the voronoi regions of the triangle
+			// the point lies in with the minimum amount of redundant computation.
+
+			_vab.subVectors(b, a);
+
+			_vac.subVectors(c, a);
+
+			_vap.subVectors(p, a);
+
+			var d1 = _vab.dot(_vap);
+
+			var d2 = _vac.dot(_vap);
+
+			if (d1 <= 0 && d2 <= 0) {
+				// vertex region of A; barycentric coords (1, 0, 0)
+				return target.copy(a);
+			}
+
+			_vbp.subVectors(p, b);
+
+			var d3 = _vab.dot(_vbp);
+
+			var d4 = _vac.dot(_vbp);
+
+			if (d3 >= 0 && d4 <= d3) {
+				// vertex region of B; barycentric coords (0, 1, 0)
+				return target.copy(b);
+			}
+
+			var vc = d1 * d4 - d3 * d2;
+
+			if (vc <= 0 && d1 >= 0 && d3 <= 0) {
+				v = d1 / (d1 - d3); // edge region of AB; barycentric coords (1-v, v, 0)
+
+				return target.copy(a).addScaledVector(_vab, v);
+			}
+
+			_vcp.subVectors(p, c);
+
+			var d5 = _vab.dot(_vcp);
+
+			var d6 = _vac.dot(_vcp);
+
+			if (d6 >= 0 && d5 <= d6) {
+				// vertex region of C; barycentric coords (0, 0, 1)
+				return target.copy(c);
+			}
+
+			var vb = d5 * d2 - d1 * d6;
+
+			if (vb <= 0 && d2 >= 0 && d6 <= 0) {
+				w = d2 / (d2 - d6); // edge region of AC; barycentric coords (1-w, 0, w)
+
+				return target.copy(a).addScaledVector(_vac, w);
+			}
+
+			var va = d3 * d6 - d5 * d4;
+
+			if (va <= 0 && d4 - d3 >= 0 && d5 - d6 >= 0) {
+				_vbc.subVectors(c, b);
+
+				w = (d4 - d3) / (d4 - d3 + (d5 - d6)); // edge region of BC; barycentric coords (0, 1-w, w)
+
+				return target.copy(b).addScaledVector(_vbc, w); // edge region of BC
+			} // face region
+
+
+			var denom = 1 / (va + vb + vc); // u = va * denom
+
+			v = vb * denom;
+			w = vc * denom;
+			return target.copy(a).addScaledVector(_vab, v).addScaledVector(_vac, w);
+		};
+
+		_proto.equals = function equals(triangle) {
+			return triangle.a.equals(this.a) && triangle.b.equals(this.b) && triangle.c.equals(this.c);
+		};
+
+		return Triangle;
+	}();
+
+	var materialId = 0;
+
+	function Material() {
+		Object.defineProperty(this, 'id', {
+			value: materialId++
+		});
+		this.uuid = MathUtils.generateUUID();
+		this.name = '';
+		this.type = 'Material';
+		this.fog = true;
+		this.blending = NormalBlending;
+		this.side = FrontSide;
+		this.vertexColors = false;
+		this.opacity = 1;
+		this.transparent = false;
+		this.blendSrc = SrcAlphaFactor;
+		this.blendDst = OneMinusSrcAlphaFactor;
+		this.blendEquation = AddEquation;
+		this.blendSrcAlpha = null;
+		this.blendDstAlpha = null;
+		this.blendEquationAlpha = null;
+		this.depthFunc = LessEqualDepth;
+		this.depthTest = true;
+		this.depthWrite = true;
+		this.stencilWriteMask = 0xff;
+		this.stencilFunc = AlwaysStencilFunc;
+		this.stencilRef = 0;
+		this.stencilFuncMask = 0xff;
+		this.stencilFail = KeepStencilOp;
+		this.stencilZFail = KeepStencilOp;
+		this.stencilZPass = KeepStencilOp;
+		this.stencilWrite = false;
+		this.clippingPlanes = null;
+		this.clipIntersection = false;
+		this.clipShadows = false;
+		this.shadowSide = null;
+		this.colorWrite = true;
+		this.precision = null; // override the renderer's default precision for this material
+
+		this.polygonOffset = false;
+		this.polygonOffsetFactor = 0;
+		this.polygonOffsetUnits = 0;
+		this.dithering = false;
+		this.alphaTest = 0;
+		this.premultipliedAlpha = false;
+		this.visible = true;
+		this.toneMapped = true;
+		this.userData = {};
+		this.version = 0;
+	}
+
+	Material.prototype = Object.assign(Object.create(EventDispatcher.prototype), {
+		constructor: Material,
+		isMaterial: true,
+		onBeforeCompile: function onBeforeCompile()
+		/* shaderobject, renderer */
+		{},
+		customProgramCacheKey: function customProgramCacheKey() {
+			return this.onBeforeCompile.toString();
+		},
+		setValues: function setValues(values) {
+			if (values === undefined) return;
+
+			for (var key in values) {
+				var newValue = values[key];
+
+				if (newValue === undefined) {
+					console.warn('THREE.Material: \'' + key + '\' parameter is undefined.');
+					continue;
+				} // for backward compatability if shading is set in the constructor
+
+
+				if (key === 'shading') {
+					console.warn('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
+					this.flatShading = newValue === FlatShading ? true : false;
+					continue;
+				}
+
+				var currentValue = this[key];
+
+				if (currentValue === undefined) {
+					console.warn('THREE.' + this.type + ': \'' + key + '\' is not a property of this material.');
+					continue;
+				}
+
+				if (currentValue && currentValue.isColor) {
+					currentValue.set(newValue);
+				} else if (currentValue && currentValue.isVector3 && newValue && newValue.isVector3) {
+					currentValue.copy(newValue);
+				} else {
+					this[key] = newValue;
+				}
+			}
+		},
+		toJSON: function toJSON(meta) {
+			var isRoot = meta === undefined || typeof meta === 'string';
+
+			if (isRoot) {
+				meta = {
+					textures: {},
+					images: {}
+				};
+			}
+
+			var data = {
+				metadata: {
+					version: 4.5,
+					type: 'Material',
+					generator: 'Material.toJSON'
+				}
+			}; // standard Material serialization
+
+			data.uuid = this.uuid;
+			data.type = this.type;
+			if (this.name !== '') data.name = this.name;
+			if (this.color && this.color.isColor) data.color = this.color.getHex();
+			if (this.roughness !== undefined) data.roughness = this.roughness;
+			if (this.metalness !== undefined) data.metalness = this.metalness;
+			if (this.sheen && this.sheen.isColor) data.sheen = this.sheen.getHex();
+			if (this.emissive && this.emissive.isColor) data.emissive = this.emissive.getHex();
+			if (this.emissiveIntensity && this.emissiveIntensity !== 1) data.emissiveIntensity = this.emissiveIntensity;
+			if (this.specular && this.specular.isColor) data.specular = this.specular.getHex();
+			if (this.shininess !== undefined) data.shininess = this.shininess;
+			if (this.clearcoat !== undefined) data.clearcoat = this.clearcoat;
+			if (this.clearcoatRoughness !== undefined) data.clearcoatRoughness = this.clearcoatRoughness;
+
+			if (this.clearcoatMap && this.clearcoatMap.isTexture) {
+				data.clearcoatMap = this.clearcoatMap.toJSON(meta).uuid;
+			}
+
+			if (this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture) {
+				data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON(meta).uuid;
+			}
+
+			if (this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture) {
+				data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON(meta).uuid;
+				data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
+			}
+
+			if (this.map && this.map.isTexture) data.map = this.map.toJSON(meta).uuid;
+			if (this.matcap && this.matcap.isTexture) data.matcap = this.matcap.toJSON(meta).uuid;
+			if (this.alphaMap && this.alphaMap.isTexture) data.alphaMap = this.alphaMap.toJSON(meta).uuid;
+
+			if (this.lightMap && this.lightMap.isTexture) {
+				data.lightMap = this.lightMap.toJSON(meta).uuid;
+				data.lightMapIntensity = this.lightMapIntensity;
+			}
+
+			if (this.aoMap && this.aoMap.isTexture) {
+				data.aoMap = this.aoMap.toJSON(meta).uuid;
+				data.aoMapIntensity = this.aoMapIntensity;
+			}
+
+			if (this.bumpMap && this.bumpMap.isTexture) {
+				data.bumpMap = this.bumpMap.toJSON(meta).uuid;
+				data.bumpScale = this.bumpScale;
+			}
+
+			if (this.normalMap && this.normalMap.isTexture) {
+				data.normalMap = this.normalMap.toJSON(meta).uuid;
+				data.normalMapType = this.normalMapType;
+				data.normalScale = this.normalScale.toArray();
+			}
+
+			if (this.displacementMap && this.displacementMap.isTexture) {
+				data.displacementMap = this.displacementMap.toJSON(meta).uuid;
+				data.displacementScale = this.displacementScale;
+				data.displacementBias = this.displacementBias;
+			}
+
+			if (this.roughnessMap && this.roughnessMap.isTexture) data.roughnessMap = this.roughnessMap.toJSON(meta).uuid;
+			if (this.metalnessMap && this.metalnessMap.isTexture) data.metalnessMap = this.metalnessMap.toJSON(meta).uuid;
+			if (this.emissiveMap && this.emissiveMap.isTexture) data.emissiveMap = this.emissiveMap.toJSON(meta).uuid;
+			if (this.specularMap && this.specularMap.isTexture) data.specularMap = this.specularMap.toJSON(meta).uuid;
+
+			if (this.envMap && this.envMap.isTexture) {
+				data.envMap = this.envMap.toJSON(meta).uuid;
+				data.reflectivity = this.reflectivity; // Scale behind envMap
+
+				data.refractionRatio = this.refractionRatio;
+				if (this.combine !== undefined) data.combine = this.combine;
+				if (this.envMapIntensity !== undefined) data.envMapIntensity = this.envMapIntensity;
+			}
+
+			if (this.gradientMap && this.gradientMap.isTexture) {
+				data.gradientMap = this.gradientMap.toJSON(meta).uuid;
+			}
+
+			if (this.size !== undefined) data.size = this.size;
+			if (this.sizeAttenuation !== undefined) data.sizeAttenuation = this.sizeAttenuation;
+			if (this.blending !== NormalBlending) data.blending = this.blending;
+			if (this.side !== FrontSide) data.side = this.side;
+			if (this.vertexColors) data.vertexColors = true;
+			if (this.opacity < 1) data.opacity = this.opacity;
+			if (this.transparent === true) data.transparent = this.transparent;
+			data.depthFunc = this.depthFunc;
+			data.depthTest = this.depthTest;
+			data.depthWrite = this.depthWrite;
+			data.stencilWrite = this.stencilWrite;
+			data.stencilWriteMask = this.stencilWriteMask;
+			data.stencilFunc = this.stencilFunc;
+			data.stencilRef = this.stencilRef;
+			data.stencilFuncMask = this.stencilFuncMask;
+			data.stencilFail = this.stencilFail;
+			data.stencilZFail = this.stencilZFail;
+			data.stencilZPass = this.stencilZPass; // rotation (SpriteMaterial)
+
+			if (this.rotation && this.rotation !== 0) data.rotation = this.rotation;
+			if (this.polygonOffset === true) data.polygonOffset = true;
+			if (this.polygonOffsetFactor !== 0) data.polygonOffsetFactor = this.polygonOffsetFactor;
+			if (this.polygonOffsetUnits !== 0) data.polygonOffsetUnits = this.polygonOffsetUnits;
+			if (this.linewidth && this.linewidth !== 1) data.linewidth = this.linewidth;
+			if (this.dashSize !== undefined) data.dashSize = this.dashSize;
+			if (this.gapSize !== undefined) data.gapSize = this.gapSize;
+			if (this.scale !== undefined) data.scale = this.scale;
+			if (this.dithering === true) data.dithering = true;
+			if (this.alphaTest > 0) data.alphaTest = this.alphaTest;
+			if (this.premultipliedAlpha === true) data.premultipliedAlpha = this.premultipliedAlpha;
+			if (this.wireframe === true) data.wireframe = this.wireframe;
+			if (this.wireframeLinewidth > 1) data.wireframeLinewidth = this.wireframeLinewidth;
+			if (this.wireframeLinecap !== 'round') data.wireframeLinecap = this.wireframeLinecap;
+			if (this.wireframeLinejoin !== 'round') data.wireframeLinejoin = this.wireframeLinejoin;
+			if (this.morphTargets === true) data.morphTargets = true;
+			if (this.morphNormals === true) data.morphNormals = true;
+			if (this.skinning === true) data.skinning = true;
+			if (this.flatShading === true) data.flatShading = this.flatShading;
+			if (this.visible === false) data.visible = false;
+			if (this.toneMapped === false) data.toneMapped = false;
+			if (JSON.stringify(this.userData) !== '{}') data.userData = this.userData; // TODO: Copied from Object3D.toJSON
+
+			function extractFromCache(cache) {
+				var values = [];
+
+				for (var key in cache) {
+					var _data = cache[key];
+					delete _data.metadata;
+					values.push(_data);
+				}
+
+				return values;
+			}
+
+			if (isRoot) {
+				var textures = extractFromCache(meta.textures);
+				var images = extractFromCache(meta.images);
+				if (textures.length > 0) data.textures = textures;
+				if (images.length > 0) data.images = images;
+			}
+
+			return data;
+		},
+		clone: function clone() {
+			return new this.constructor().copy(this);
+		},
+		copy: function copy(source) {
+			this.name = source.name;
+			this.fog = source.fog;
+			this.blending = source.blending;
+			this.side = source.side;
+			this.vertexColors = source.vertexColors;
+			this.opacity = source.opacity;
+			this.transparent = source.transparent;
+			this.blendSrc = source.blendSrc;
+			this.blendDst = source.blendDst;
+			this.blendEquation = source.blendEquation;
+			this.blendSrcAlpha = source.blendSrcAlpha;
+			this.blendDstAlpha = source.blendDstAlpha;
+			this.blendEquationAlpha = source.blendEquationAlpha;
+			this.depthFunc = source.depthFunc;
+			this.depthTest = source.depthTest;
+			this.depthWrite = source.depthWrite;
+			this.stencilWriteMask = source.stencilWriteMask;
+			this.stencilFunc = source.stencilFunc;
+			this.stencilRef = source.stencilRef;
+			this.stencilFuncMask = source.stencilFuncMask;
+			this.stencilFail = source.stencilFail;
+			this.stencilZFail = source.stencilZFail;
+			this.stencilZPass = source.stencilZPass;
+			this.stencilWrite = source.stencilWrite;
+			var srcPlanes = source.clippingPlanes;
+			var dstPlanes = null;
+
+			if (srcPlanes !== null) {
+				var n = srcPlanes.length;
+				dstPlanes = new Array(n);
+
+				for (var i = 0; i !== n; ++i) {
+					dstPlanes[i] = srcPlanes[i].clone();
+				}
+			}
+
+			this.clippingPlanes = dstPlanes;
+			this.clipIntersection = source.clipIntersection;
+			this.clipShadows = source.clipShadows;
+			this.shadowSide = source.shadowSide;
+			this.colorWrite = source.colorWrite;
+			this.precision = source.precision;
+			this.polygonOffset = source.polygonOffset;
+			this.polygonOffsetFactor = source.polygonOffsetFactor;
+			this.polygonOffsetUnits = source.polygonOffsetUnits;
+			this.dithering = source.dithering;
+			this.alphaTest = source.alphaTest;
+			this.premultipliedAlpha = source.premultipliedAlpha;
+			this.visible = source.visible;
+			this.toneMapped = source.toneMapped;
+			this.userData = JSON.parse(JSON.stringify(source.userData));
+			return this;
+		},
+		dispose: function dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
+	});
+	Object.defineProperty(Material.prototype, 'needsUpdate', {
+		set: function set(value) {
+			if (value === true) this.version++;
+		}
+	});
+
+	var _colorKeywords = {
+		'aliceblue': 0xF0F8FF,
+		'antiquewhite': 0xFAEBD7,
+		'aqua': 0x00FFFF,
+		'aquamarine': 0x7FFFD4,
+		'azure': 0xF0FFFF,
+		'beige': 0xF5F5DC,
+		'bisque': 0xFFE4C4,
+		'black': 0x000000,
+		'blanchedalmond': 0xFFEBCD,
+		'blue': 0x0000FF,
+		'blueviolet': 0x8A2BE2,
+		'brown': 0xA52A2A,
+		'burlywood': 0xDEB887,
+		'cadetblue': 0x5F9EA0,
+		'chartreuse': 0x7FFF00,
+		'chocolate': 0xD2691E,
+		'coral': 0xFF7F50,
+		'cornflowerblue': 0x6495ED,
+		'cornsilk': 0xFFF8DC,
+		'crimson': 0xDC143C,
+		'cyan': 0x00FFFF,
+		'darkblue': 0x00008B,
+		'darkcyan': 0x008B8B,
+		'darkgoldenrod': 0xB8860B,
+		'darkgray': 0xA9A9A9,
+		'darkgreen': 0x006400,
+		'darkgrey': 0xA9A9A9,
+		'darkkhaki': 0xBDB76B,
+		'darkmagenta': 0x8B008B,
+		'darkolivegreen': 0x556B2F,
+		'darkorange': 0xFF8C00,
+		'darkorchid': 0x9932CC,
+		'darkred': 0x8B0000,
+		'darksalmon': 0xE9967A,
+		'darkseagreen': 0x8FBC8F,
+		'darkslateblue': 0x483D8B,
+		'darkslategray': 0x2F4F4F,
+		'darkslategrey': 0x2F4F4F,
+		'darkturquoise': 0x00CED1,
+		'darkviolet': 0x9400D3,
+		'deeppink': 0xFF1493,
+		'deepskyblue': 0x00BFFF,
+		'dimgray': 0x696969,
+		'dimgrey': 0x696969,
+		'dodgerblue': 0x1E90FF,
+		'firebrick': 0xB22222,
+		'floralwhite': 0xFFFAF0,
+		'forestgreen': 0x228B22,
+		'fuchsia': 0xFF00FF,
+		'gainsboro': 0xDCDCDC,
+		'ghostwhite': 0xF8F8FF,
+		'gold': 0xFFD700,
+		'goldenrod': 0xDAA520,
+		'gray': 0x808080,
+		'green': 0x008000,
+		'greenyellow': 0xADFF2F,
+		'grey': 0x808080,
+		'honeydew': 0xF0FFF0,
+		'hotpink': 0xFF69B4,
+		'indianred': 0xCD5C5C,
+		'indigo': 0x4B0082,
+		'ivory': 0xFFFFF0,
+		'khaki': 0xF0E68C,
+		'lavender': 0xE6E6FA,
+		'lavenderblush': 0xFFF0F5,
+		'lawngreen': 0x7CFC00,
+		'lemonchiffon': 0xFFFACD,
+		'lightblue': 0xADD8E6,
+		'lightcoral': 0xF08080,
+		'lightcyan': 0xE0FFFF,
+		'lightgoldenrodyellow': 0xFAFAD2,
+		'lightgray': 0xD3D3D3,
+		'lightgreen': 0x90EE90,
+		'lightgrey': 0xD3D3D3,
+		'lightpink': 0xFFB6C1,
+		'lightsalmon': 0xFFA07A,
+		'lightseagreen': 0x20B2AA,
+		'lightskyblue': 0x87CEFA,
+		'lightslategray': 0x778899,
+		'lightslategrey': 0x778899,
+		'lightsteelblue': 0xB0C4DE,
+		'lightyellow': 0xFFFFE0,
+		'lime': 0x00FF00,
+		'limegreen': 0x32CD32,
+		'linen': 0xFAF0E6,
+		'magenta': 0xFF00FF,
+		'maroon': 0x800000,
+		'mediumaquamarine': 0x66CDAA,
+		'mediumblue': 0x0000CD,
+		'mediumorchid': 0xBA55D3,
+		'mediumpurple': 0x9370DB,
+		'mediumseagreen': 0x3CB371,
+		'mediumslateblue': 0x7B68EE,
+		'mediumspringgreen': 0x00FA9A,
+		'mediumturquoise': 0x48D1CC,
+		'mediumvioletred': 0xC71585,
+		'midnightblue': 0x191970,
+		'mintcream': 0xF5FFFA,
+		'mistyrose': 0xFFE4E1,
+		'moccasin': 0xFFE4B5,
+		'navajowhite': 0xFFDEAD,
+		'navy': 0x000080,
+		'oldlace': 0xFDF5E6,
+		'olive': 0x808000,
+		'olivedrab': 0x6B8E23,
+		'orange': 0xFFA500,
+		'orangered': 0xFF4500,
+		'orchid': 0xDA70D6,
+		'palegoldenrod': 0xEEE8AA,
+		'palegreen': 0x98FB98,
+		'paleturquoise': 0xAFEEEE,
+		'palevioletred': 0xDB7093,
+		'papayawhip': 0xFFEFD5,
+		'peachpuff': 0xFFDAB9,
+		'peru': 0xCD853F,
+		'pink': 0xFFC0CB,
+		'plum': 0xDDA0DD,
+		'powderblue': 0xB0E0E6,
+		'purple': 0x800080,
+		'rebeccapurple': 0x663399,
+		'red': 0xFF0000,
+		'rosybrown': 0xBC8F8F,
+		'royalblue': 0x4169E1,
+		'saddlebrown': 0x8B4513,
+		'salmon': 0xFA8072,
+		'sandybrown': 0xF4A460,
+		'seagreen': 0x2E8B57,
+		'seashell': 0xFFF5EE,
+		'sienna': 0xA0522D,
+		'silver': 0xC0C0C0,
+		'skyblue': 0x87CEEB,
+		'slateblue': 0x6A5ACD,
+		'slategray': 0x708090,
+		'slategrey': 0x708090,
+		'snow': 0xFFFAFA,
+		'springgreen': 0x00FF7F,
+		'steelblue': 0x4682B4,
+		'tan': 0xD2B48C,
+		'teal': 0x008080,
+		'thistle': 0xD8BFD8,
+		'tomato': 0xFF6347,
+		'turquoise': 0x40E0D0,
+		'violet': 0xEE82EE,
+		'wheat': 0xF5DEB3,
+		'white': 0xFFFFFF,
+		'whitesmoke': 0xF5F5F5,
+		'yellow': 0xFFFF00,
+		'yellowgreen': 0x9ACD32
+	};
+	var _hslA = {
+		h: 0,
+		s: 0,
+		l: 0
+	};
+	var _hslB = {
+		h: 0,
+		s: 0,
+		l: 0
+	};
+
+	function hue2rgb(p, q, t) {
+		if (t < 0) t += 1;
+		if (t > 1) t -= 1;
+		if (t < 1 / 6) return p + (q - p) * 6 * t;
+		if (t < 1 / 2) return q;
+		if (t < 2 / 3) return p + (q - p) * 6 * (2 / 3 - t);
+		return p;
+	}
+
+	function SRGBToLinear(c) {
+		return c < 0.04045 ? c * 0.0773993808 : Math.pow(c * 0.9478672986 + 0.0521327014, 2.4);
+	}
+
+	function LinearToSRGB(c) {
+		return c < 0.0031308 ? c * 12.92 : 1.055 * Math.pow(c, 0.41666) - 0.055;
+	}
+
+	var Color = /*#__PURE__*/function () {
+		function Color(r, g, b) {
+			if (g === undefined && b === undefined) {
+				// r is THREE.Color, hex or string
+				return this.set(r);
+			}
+
+			return this.setRGB(r, g, b);
+		}
+
+		var _proto = Color.prototype;
+
+		_proto.set = function set(value) {
+			if (value && value.isColor) {
+				this.copy(value);
+			} else if (typeof value === 'number') {
+				this.setHex(value);
+			} else if (typeof value === 'string') {
+				this.setStyle(value);
+			}
+
+			return this;
+		};
+
+		_proto.setScalar = function setScalar(scalar) {
+			this.r = scalar;
+			this.g = scalar;
+			this.b = scalar;
+			return this;
+		};
+
+		_proto.setHex = function setHex(hex) {
+			hex = Math.floor(hex);
+			this.r = (hex >> 16 & 255) / 255;
+			this.g = (hex >> 8 & 255) / 255;
+			this.b = (hex & 255) / 255;
+			return this;
+		};
+
+		_proto.setRGB = function setRGB(r, g, b) {
+			this.r = r;
+			this.g = g;
+			this.b = b;
+			return this;
+		};
+
+		_proto.setHSL = function setHSL(h, s, l) {
+			// h,s,l ranges are in 0.0 - 1.0
+			h = MathUtils.euclideanModulo(h, 1);
+			s = MathUtils.clamp(s, 0, 1);
+			l = MathUtils.clamp(l, 0, 1);
+
+			if (s === 0) {
+				this.r = this.g = this.b = l;
+			} else {
+				var p = l <= 0.5 ? l * (1 + s) : l + s - l * s;
+				var q = 2 * l - p;
+				this.r = hue2rgb(q, p, h + 1 / 3);
+				this.g = hue2rgb(q, p, h);
+				this.b = hue2rgb(q, p, h - 1 / 3);
+			}
+
+			return this;
+		};
+
+		_proto.setStyle = function setStyle(style) {
+			function handleAlpha(string) {
+				if (string === undefined) return;
+
+				if (parseFloat(string) < 1) {
+					console.warn('THREE.Color: Alpha component of ' + style + ' will be ignored.');
+				}
+			}
+
+			var m;
+
+			if (m = /^((?:rgb|hsl)a?)\(([^\)]*)\)/.exec(style)) {
+				// rgb / hsl
+				var color;
+				var name = m[1];
+				var components = m[2];
+
+				switch (name) {
+					case 'rgb':
+					case 'rgba':
+						if (color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
+							// rgb(255,0,0) rgba(255,0,0,0.5)
+							this.r = Math.min(255, parseInt(color[1], 10)) / 255;
+							this.g = Math.min(255, parseInt(color[2], 10)) / 255;
+							this.b = Math.min(255, parseInt(color[3], 10)) / 255;
+							handleAlpha(color[4]);
+							return this;
+						}
+
+						if (color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
+							// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
+							this.r = Math.min(100, parseInt(color[1], 10)) / 100;
+							this.g = Math.min(100, parseInt(color[2], 10)) / 100;
+							this.b = Math.min(100, parseInt(color[3], 10)) / 100;
+							handleAlpha(color[4]);
+							return this;
+						}
+
+						break;
+
+					case 'hsl':
+					case 'hsla':
+						if (color = /^\s*(\d*\.?\d+)\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec(components)) {
+							// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
+							var h = parseFloat(color[1]) / 360;
+							var s = parseInt(color[2], 10) / 100;
+							var l = parseInt(color[3], 10) / 100;
+							handleAlpha(color[4]);
+							return this.setHSL(h, s, l);
+						}
+
+						break;
+				}
+			} else if (m = /^\#([A-Fa-f\d]+)$/.exec(style)) {
+				// hex color
+				var hex = m[1];
+				var size = hex.length;
+
+				if (size === 3) {
+					// #ff0
+					this.r = parseInt(hex.charAt(0) + hex.charAt(0), 16) / 255;
+					this.g = parseInt(hex.charAt(1) + hex.charAt(1), 16) / 255;
+					this.b = parseInt(hex.charAt(2) + hex.charAt(2), 16) / 255;
+					return this;
+				} else if (size === 6) {
+					// #ff0000
+					this.r = parseInt(hex.charAt(0) + hex.charAt(1), 16) / 255;
+					this.g = parseInt(hex.charAt(2) + hex.charAt(3), 16) / 255;
+					this.b = parseInt(hex.charAt(4) + hex.charAt(5), 16) / 255;
+					return this;
+				}
+			}
+
+			if (style && style.length > 0) {
+				return this.setColorName(style);
+			}
+
+			return this;
+		};
+
+		_proto.setColorName = function setColorName(style) {
+			// color keywords
+			var hex = _colorKeywords[style];
+
+			if (hex !== undefined) {
+				// red
+				this.setHex(hex);
+			} else {
+				// unknown color
+				console.warn('THREE.Color: Unknown color ' + style);
+			}
+
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor(this.r, this.g, this.b);
+		};
+
+		_proto.copy = function copy(color) {
+			this.r = color.r;
+			this.g = color.g;
+			this.b = color.b;
+			return this;
+		};
+
+		_proto.copyGammaToLinear = function copyGammaToLinear(color, gammaFactor) {
+			if (gammaFactor === void 0) {
+				gammaFactor = 2.0;
+			}
+
+			this.r = Math.pow(color.r, gammaFactor);
+			this.g = Math.pow(color.g, gammaFactor);
+			this.b = Math.pow(color.b, gammaFactor);
+			return this;
+		};
+
+		_proto.copyLinearToGamma = function copyLinearToGamma(color, gammaFactor) {
+			if (gammaFactor === void 0) {
+				gammaFactor = 2.0;
+			}
+
+			var safeInverse = gammaFactor > 0 ? 1.0 / gammaFactor : 1.0;
+			this.r = Math.pow(color.r, safeInverse);
+			this.g = Math.pow(color.g, safeInverse);
+			this.b = Math.pow(color.b, safeInverse);
+			return this;
+		};
+
+		_proto.convertGammaToLinear = function convertGammaToLinear(gammaFactor) {
+			this.copyGammaToLinear(this, gammaFactor);
+			return this;
+		};
+
+		_proto.convertLinearToGamma = function convertLinearToGamma(gammaFactor) {
+			this.copyLinearToGamma(this, gammaFactor);
+			return this;
+		};
+
+		_proto.copySRGBToLinear = function copySRGBToLinear(color) {
+			this.r = SRGBToLinear(color.r);
+			this.g = SRGBToLinear(color.g);
+			this.b = SRGBToLinear(color.b);
+			return this;
+		};
+
+		_proto.copyLinearToSRGB = function copyLinearToSRGB(color) {
+			this.r = LinearToSRGB(color.r);
+			this.g = LinearToSRGB(color.g);
+			this.b = LinearToSRGB(color.b);
+			return this;
+		};
+
+		_proto.convertSRGBToLinear = function convertSRGBToLinear() {
+			this.copySRGBToLinear(this);
+			return this;
+		};
+
+		_proto.convertLinearToSRGB = function convertLinearToSRGB() {
+			this.copyLinearToSRGB(this);
+			return this;
+		};
+
+		_proto.getHex = function getHex() {
+			return this.r * 255 << 16 ^ this.g * 255 << 8 ^ this.b * 255 << 0;
+		};
+
+		_proto.getHexString = function getHexString() {
+			return ('000000' + this.getHex().toString(16)).slice(-6);
+		};
+
+		_proto.getHSL = function getHSL(target) {
+			// h,s,l ranges are in 0.0 - 1.0
+			if (target === undefined) {
+				console.warn('THREE.Color: .getHSL() target is now required');
+				target = {
+					h: 0,
+					s: 0,
+					l: 0
+				};
+			}
+
+			var r = this.r,
+					g = this.g,
+					b = this.b;
+			var max = Math.max(r, g, b);
+			var min = Math.min(r, g, b);
+			var hue, saturation;
+			var lightness = (min + max) / 2.0;
+
+			if (min === max) {
+				hue = 0;
+				saturation = 0;
+			} else {
+				var delta = max - min;
+				saturation = lightness <= 0.5 ? delta / (max + min) : delta / (2 - max - min);
+
+				switch (max) {
+					case r:
+						hue = (g - b) / delta + (g < b ? 6 : 0);
+						break;
+
+					case g:
+						hue = (b - r) / delta + 2;
+						break;
+
+					case b:
+						hue = (r - g) / delta + 4;
+						break;
+				}
+
+				hue /= 6;
+			}
+
+			target.h = hue;
+			target.s = saturation;
+			target.l = lightness;
+			return target;
+		};
+
+		_proto.getStyle = function getStyle() {
+			return 'rgb(' + (this.r * 255 | 0) + ',' + (this.g * 255 | 0) + ',' + (this.b * 255 | 0) + ')';
+		};
+
+		_proto.offsetHSL = function offsetHSL(h, s, l) {
+			this.getHSL(_hslA);
+			_hslA.h += h;
+			_hslA.s += s;
+			_hslA.l += l;
+			this.setHSL(_hslA.h, _hslA.s, _hslA.l);
+			return this;
+		};
+
+		_proto.add = function add(color) {
+			this.r += color.r;
+			this.g += color.g;
+			this.b += color.b;
+			return this;
+		};
+
+		_proto.addColors = function addColors(color1, color2) {
+			this.r = color1.r + color2.r;
+			this.g = color1.g + color2.g;
+			this.b = color1.b + color2.b;
+			return this;
+		};
+
+		_proto.addScalar = function addScalar(s) {
+			this.r += s;
+			this.g += s;
+			this.b += s;
+			return this;
+		};
+
+		_proto.sub = function sub(color) {
+			this.r = Math.max(0, this.r - color.r);
+			this.g = Math.max(0, this.g - color.g);
+			this.b = Math.max(0, this.b - color.b);
+			return this;
+		};
+
+		_proto.multiply = function multiply(color) {
+			this.r *= color.r;
+			this.g *= color.g;
+			this.b *= color.b;
+			return this;
+		};
+
+		_proto.multiplyScalar = function multiplyScalar(s) {
+			this.r *= s;
+			this.g *= s;
+			this.b *= s;
+			return this;
+		};
+
+		_proto.lerp = function lerp(color, alpha) {
+			this.r += (color.r - this.r) * alpha;
+			this.g += (color.g - this.g) * alpha;
+			this.b += (color.b - this.b) * alpha;
+			return this;
+		};
+
+		_proto.lerpColors = function lerpColors(color1, color2, alpha) {
+			this.r = color1.r + (color2.r - color1.r) * alpha;
+			this.g = color1.g + (color2.g - color1.g) * alpha;
+			this.b = color1.b + (color2.b - color1.b) * alpha;
+			return this;
+		};
+
+		_proto.lerpHSL = function lerpHSL(color, alpha) {
+			this.getHSL(_hslA);
+			color.getHSL(_hslB);
+			var h = MathUtils.lerp(_hslA.h, _hslB.h, alpha);
+			var s = MathUtils.lerp(_hslA.s, _hslB.s, alpha);
+			var l = MathUtils.lerp(_hslA.l, _hslB.l, alpha);
+			this.setHSL(h, s, l);
+			return this;
+		};
+
+		_proto.equals = function equals(c) {
+			return c.r === this.r && c.g === this.g && c.b === this.b;
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			this.r = array[offset];
+			this.g = array[offset + 1];
+			this.b = array[offset + 2];
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			array[offset] = this.r;
+			array[offset + 1] = this.g;
+			array[offset + 2] = this.b;
+			return array;
+		};
+
+		_proto.fromBufferAttribute = function fromBufferAttribute(attribute, index) {
+			this.r = attribute.getX(index);
+			this.g = attribute.getY(index);
+			this.b = attribute.getZ(index);
+
+			if (attribute.normalized === true) {
+				// assuming Uint8Array
+				this.r /= 255;
+				this.g /= 255;
+				this.b /= 255;
+			}
+
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			return this.getHex();
+		};
+
+		return Color;
+	}();
+
+	Color.NAMES = _colorKeywords;
+	Color.prototype.isColor = true;
+	Color.prototype.r = 1;
+	Color.prototype.g = 1;
+	Color.prototype.b = 1;
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	specularMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	combine: THREE.Multiply,
+	 *	reflectivity: <float>,
+	 *	refractionRatio: <float>,
+	 *
+	 *	depthTest: <bool>,
+	 *	depthWrite: <bool>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>
+	 * }
+	 */
+
+	var MeshBasicMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshBasicMaterial, _Material);
+
+		function MeshBasicMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'MeshBasicMaterial';
+			_this.color = new Color(0xffffff); // emissive
+
+			_this.map = null;
+			_this.lightMap = null;
+			_this.lightMapIntensity = 1.0;
+			_this.aoMap = null;
+			_this.aoMapIntensity = 1.0;
+			_this.specularMap = null;
+			_this.alphaMap = null;
+			_this.envMap = null;
+			_this.combine = MultiplyOperation;
+			_this.reflectivity = 1;
+			_this.refractionRatio = 0.98;
+			_this.wireframe = false;
+			_this.wireframeLinewidth = 1;
+			_this.wireframeLinecap = 'round';
+			_this.wireframeLinejoin = 'round';
+			_this.skinning = false;
+			_this.morphTargets = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshBasicMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.specularMap = source.specularMap;
+			this.alphaMap = source.alphaMap;
+			this.envMap = source.envMap;
+			this.combine = source.combine;
+			this.reflectivity = source.reflectivity;
+			this.refractionRatio = source.refractionRatio;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			return this;
+		};
+
+		return MeshBasicMaterial;
+	}(Material);
+
+	MeshBasicMaterial.prototype.isMeshBasicMaterial = true;
+
+	var _vector$3 = new Vector3();
+
+	var _vector2$1 = new Vector2();
+
+	function BufferAttribute(array, itemSize, normalized) {
+		if (Array.isArray(array)) {
+			throw new TypeError('THREE.BufferAttribute: array should be a Typed Array.');
+		}
+
+		this.name = '';
+		this.array = array;
+		this.itemSize = itemSize;
+		this.count = array !== undefined ? array.length / itemSize : 0;
+		this.normalized = normalized === true;
+		this.usage = StaticDrawUsage;
+		this.updateRange = {
+			offset: 0,
+			count: -1
+		};
+		this.version = 0;
+	}
+
+	Object.defineProperty(BufferAttribute.prototype, 'needsUpdate', {
+		set: function set(value) {
+			if (value === true) this.version++;
+		}
+	});
+	Object.assign(BufferAttribute.prototype, {
+		isBufferAttribute: true,
+		onUploadCallback: function onUploadCallback() {},
+		setUsage: function setUsage(value) {
+			this.usage = value;
+			return this;
+		},
+		copy: function copy(source) {
+			this.name = source.name;
+			this.array = new source.array.constructor(source.array);
+			this.itemSize = source.itemSize;
+			this.count = source.count;
+			this.normalized = source.normalized;
+			this.usage = source.usage;
+			return this;
+		},
+		copyAt: function copyAt(index1, attribute, index2) {
+			index1 *= this.itemSize;
+			index2 *= attribute.itemSize;
+
+			for (var i = 0, l = this.itemSize; i < l; i++) {
+				this.array[index1 + i] = attribute.array[index2 + i];
+			}
+
+			return this;
+		},
+		copyArray: function copyArray(array) {
+			this.array.set(array);
+			return this;
+		},
+		copyColorsArray: function copyColorsArray(colors) {
+			var array = this.array;
+			var offset = 0;
+
+			for (var i = 0, l = colors.length; i < l; i++) {
+				var color = colors[i];
+
+				if (color === undefined) {
+					console.warn('THREE.BufferAttribute.copyColorsArray(): color is undefined', i);
+					color = new Color();
+				}
+
+				array[offset++] = color.r;
+				array[offset++] = color.g;
+				array[offset++] = color.b;
+			}
+
+			return this;
+		},
+		copyVector2sArray: function copyVector2sArray(vectors) {
+			var array = this.array;
+			var offset = 0;
+
+			for (var i = 0, l = vectors.length; i < l; i++) {
+				var vector = vectors[i];
+
+				if (vector === undefined) {
+					console.warn('THREE.BufferAttribute.copyVector2sArray(): vector is undefined', i);
+					vector = new Vector2();
+				}
+
+				array[offset++] = vector.x;
+				array[offset++] = vector.y;
+			}
+
+			return this;
+		},
+		copyVector3sArray: function copyVector3sArray(vectors) {
+			var array = this.array;
+			var offset = 0;
+
+			for (var i = 0, l = vectors.length; i < l; i++) {
+				var vector = vectors[i];
+
+				if (vector === undefined) {
+					console.warn('THREE.BufferAttribute.copyVector3sArray(): vector is undefined', i);
+					vector = new Vector3();
+				}
+
+				array[offset++] = vector.x;
+				array[offset++] = vector.y;
+				array[offset++] = vector.z;
+			}
+
+			return this;
+		},
+		copyVector4sArray: function copyVector4sArray(vectors) {
+			var array = this.array;
+			var offset = 0;
+
+			for (var i = 0, l = vectors.length; i < l; i++) {
+				var vector = vectors[i];
+
+				if (vector === undefined) {
+					console.warn('THREE.BufferAttribute.copyVector4sArray(): vector is undefined', i);
+					vector = new Vector4();
+				}
+
+				array[offset++] = vector.x;
+				array[offset++] = vector.y;
+				array[offset++] = vector.z;
+				array[offset++] = vector.w;
+			}
+
+			return this;
+		},
+		applyMatrix3: function applyMatrix3(m) {
+			if (this.itemSize === 2) {
+				for (var i = 0, l = this.count; i < l; i++) {
+					_vector2$1.fromBufferAttribute(this, i);
+
+					_vector2$1.applyMatrix3(m);
+
+					this.setXY(i, _vector2$1.x, _vector2$1.y);
+				}
+			} else if (this.itemSize === 3) {
+				for (var _i = 0, _l = this.count; _i < _l; _i++) {
+					_vector$3.fromBufferAttribute(this, _i);
+
+					_vector$3.applyMatrix3(m);
+
+					this.setXYZ(_i, _vector$3.x, _vector$3.y, _vector$3.z);
+				}
+			}
+
+			return this;
+		},
+		applyMatrix4: function applyMatrix4(m) {
+			for (var i = 0, l = this.count; i < l; i++) {
+				_vector$3.x = this.getX(i);
+				_vector$3.y = this.getY(i);
+				_vector$3.z = this.getZ(i);
+
+				_vector$3.applyMatrix4(m);
+
+				this.setXYZ(i, _vector$3.x, _vector$3.y, _vector$3.z);
+			}
+
+			return this;
+		},
+		applyNormalMatrix: function applyNormalMatrix(m) {
+			for (var i = 0, l = this.count; i < l; i++) {
+				_vector$3.x = this.getX(i);
+				_vector$3.y = this.getY(i);
+				_vector$3.z = this.getZ(i);
+
+				_vector$3.applyNormalMatrix(m);
+
+				this.setXYZ(i, _vector$3.x, _vector$3.y, _vector$3.z);
+			}
+
+			return this;
+		},
+		transformDirection: function transformDirection(m) {
+			for (var i = 0, l = this.count; i < l; i++) {
+				_vector$3.x = this.getX(i);
+				_vector$3.y = this.getY(i);
+				_vector$3.z = this.getZ(i);
+
+				_vector$3.transformDirection(m);
+
+				this.setXYZ(i, _vector$3.x, _vector$3.y, _vector$3.z);
+			}
+
+			return this;
+		},
+		set: function set(value, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			this.array.set(value, offset);
+			return this;
+		},
+		getX: function getX(index) {
+			return this.array[index * this.itemSize];
+		},
+		setX: function setX(index, x) {
+			this.array[index * this.itemSize] = x;
+			return this;
+		},
+		getY: function getY(index) {
+			return this.array[index * this.itemSize + 1];
+		},
+		setY: function setY(index, y) {
+			this.array[index * this.itemSize + 1] = y;
+			return this;
+		},
+		getZ: function getZ(index) {
+			return this.array[index * this.itemSize + 2];
+		},
+		setZ: function setZ(index, z) {
+			this.array[index * this.itemSize + 2] = z;
+			return this;
+		},
+		getW: function getW(index) {
+			return this.array[index * this.itemSize + 3];
+		},
+		setW: function setW(index, w) {
+			this.array[index * this.itemSize + 3] = w;
+			return this;
+		},
+		setXY: function setXY(index, x, y) {
+			index *= this.itemSize;
+			this.array[index + 0] = x;
+			this.array[index + 1] = y;
+			return this;
+		},
+		setXYZ: function setXYZ(index, x, y, z) {
+			index *= this.itemSize;
+			this.array[index + 0] = x;
+			this.array[index + 1] = y;
+			this.array[index + 2] = z;
+			return this;
+		},
+		setXYZW: function setXYZW(index, x, y, z, w) {
+			index *= this.itemSize;
+			this.array[index + 0] = x;
+			this.array[index + 1] = y;
+			this.array[index + 2] = z;
+			this.array[index + 3] = w;
+			return this;
+		},
+		onUpload: function onUpload(callback) {
+			this.onUploadCallback = callback;
+			return this;
+		},
+		clone: function clone() {
+			return new this.constructor(this.array, this.itemSize).copy(this);
+		},
+		toJSON: function toJSON() {
+			return {
+				itemSize: this.itemSize,
+				type: this.array.constructor.name,
+				array: Array.prototype.slice.call(this.array),
+				normalized: this.normalized
+			};
+		}
+	}); //
+
+	function Int8BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Int8Array(array), itemSize, normalized);
+	}
+
+	Int8BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Int8BufferAttribute.prototype.constructor = Int8BufferAttribute;
+
+	function Uint8BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Uint8Array(array), itemSize, normalized);
+	}
+
+	Uint8BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Uint8BufferAttribute.prototype.constructor = Uint8BufferAttribute;
+
+	function Uint8ClampedBufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Uint8ClampedArray(array), itemSize, normalized);
+	}
+
+	Uint8ClampedBufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Uint8ClampedBufferAttribute.prototype.constructor = Uint8ClampedBufferAttribute;
+
+	function Int16BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Int16Array(array), itemSize, normalized);
+	}
+
+	Int16BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Int16BufferAttribute.prototype.constructor = Int16BufferAttribute;
+
+	function Uint16BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Uint16Array(array), itemSize, normalized);
+	}
+
+	Uint16BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Uint16BufferAttribute.prototype.constructor = Uint16BufferAttribute;
+
+	function Int32BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Int32Array(array), itemSize, normalized);
+	}
+
+	Int32BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Int32BufferAttribute.prototype.constructor = Int32BufferAttribute;
+
+	function Uint32BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Uint32Array(array), itemSize, normalized);
+	}
+
+	Uint32BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Uint32BufferAttribute.prototype.constructor = Uint32BufferAttribute;
+
+	function Float16BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Uint16Array(array), itemSize, normalized);
+	}
+
+	Float16BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Float16BufferAttribute.prototype.constructor = Float16BufferAttribute;
+	Float16BufferAttribute.prototype.isFloat16BufferAttribute = true;
+
+	function Float32BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Float32Array(array), itemSize, normalized);
+	}
+
+	Float32BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Float32BufferAttribute.prototype.constructor = Float32BufferAttribute;
+
+	function Float64BufferAttribute(array, itemSize, normalized) {
+		BufferAttribute.call(this, new Float64Array(array), itemSize, normalized);
+	}
+
+	Float64BufferAttribute.prototype = Object.create(BufferAttribute.prototype);
+	Float64BufferAttribute.prototype.constructor = Float64BufferAttribute; //
+
+	function arrayMax(array) {
+		if (array.length === 0) return -Infinity;
+		var max = array[0];
+
+		for (var i = 1, l = array.length; i < l; ++i) {
+			if (array[i] > max) max = array[i];
+		}
+
+		return max;
+	}
+
+	var TYPED_ARRAYS = {
+		Int8Array: Int8Array,
+		Uint8Array: Uint8Array,
+		Uint8ClampedArray: Uint8ClampedArray,
+		Int16Array: Int16Array,
+		Uint16Array: Uint16Array,
+		Int32Array: Int32Array,
+		Uint32Array: Uint32Array,
+		Float32Array: Float32Array,
+		Float64Array: Float64Array
+	};
+
+	function getTypedArray(type, buffer) {
+		return new TYPED_ARRAYS[type](buffer);
+	}
+
+	var _id = 0;
+
+	var _m1$2 = new Matrix4();
+
+	var _obj = new Object3D();
+
+	var _offset = new Vector3();
+
+	var _box$2 = new Box3();
+
+	var _boxMorphTargets = new Box3();
+
+	var _vector$4 = new Vector3();
+
+	function BufferGeometry() {
+		Object.defineProperty(this, 'id', {
+			value: _id++
+		});
+		this.uuid = MathUtils.generateUUID();
+		this.name = '';
+		this.type = 'BufferGeometry';
+		this.index = null;
+		this.attributes = {};
+		this.morphAttributes = {};
+		this.morphTargetsRelative = false;
+		this.groups = [];
+		this.boundingBox = null;
+		this.boundingSphere = null;
+		this.drawRange = {
+			start: 0,
+			count: Infinity
+		};
+		this.userData = {};
+	}
+
+	BufferGeometry.prototype = Object.assign(Object.create(EventDispatcher.prototype), {
+		constructor: BufferGeometry,
+		isBufferGeometry: true,
+		getIndex: function getIndex() {
+			return this.index;
+		},
+		setIndex: function setIndex(index) {
+			if (Array.isArray(index)) {
+				this.index = new (arrayMax(index) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute)(index, 1);
+			} else {
+				this.index = index;
+			}
+
+			return this;
+		},
+		getAttribute: function getAttribute(name) {
+			return this.attributes[name];
+		},
+		setAttribute: function setAttribute(name, attribute) {
+			this.attributes[name] = attribute;
+			return this;
+		},
+		deleteAttribute: function deleteAttribute(name) {
+			delete this.attributes[name];
+			return this;
+		},
+		hasAttribute: function hasAttribute(name) {
+			return this.attributes[name] !== undefined;
+		},
+		addGroup: function addGroup(start, count, materialIndex) {
+			if (materialIndex === void 0) {
+				materialIndex = 0;
+			}
+
+			this.groups.push({
+				start: start,
+				count: count,
+				materialIndex: materialIndex
+			});
+		},
+		clearGroups: function clearGroups() {
+			this.groups = [];
+		},
+		setDrawRange: function setDrawRange(start, count) {
+			this.drawRange.start = start;
+			this.drawRange.count = count;
+		},
+		applyMatrix4: function applyMatrix4(matrix) {
+			var position = this.attributes.position;
+
+			if (position !== undefined) {
+				position.applyMatrix4(matrix);
+				position.needsUpdate = true;
+			}
+
+			var normal = this.attributes.normal;
+
+			if (normal !== undefined) {
+				var normalMatrix = new Matrix3().getNormalMatrix(matrix);
+				normal.applyNormalMatrix(normalMatrix);
+				normal.needsUpdate = true;
+			}
+
+			var tangent = this.attributes.tangent;
+
+			if (tangent !== undefined) {
+				tangent.transformDirection(matrix);
+				tangent.needsUpdate = true;
+			}
+
+			if (this.boundingBox !== null) {
+				this.computeBoundingBox();
+			}
+
+			if (this.boundingSphere !== null) {
+				this.computeBoundingSphere();
+			}
+
+			return this;
+		},
+		rotateX: function rotateX(angle) {
+			// rotate geometry around world x-axis
+			_m1$2.makeRotationX(angle);
+
+			this.applyMatrix4(_m1$2);
+			return this;
+		},
+		rotateY: function rotateY(angle) {
+			// rotate geometry around world y-axis
+			_m1$2.makeRotationY(angle);
+
+			this.applyMatrix4(_m1$2);
+			return this;
+		},
+		rotateZ: function rotateZ(angle) {
+			// rotate geometry around world z-axis
+			_m1$2.makeRotationZ(angle);
+
+			this.applyMatrix4(_m1$2);
+			return this;
+		},
+		translate: function translate(x, y, z) {
+			// translate geometry
+			_m1$2.makeTranslation(x, y, z);
+
+			this.applyMatrix4(_m1$2);
+			return this;
+		},
+		scale: function scale(x, y, z) {
+			// scale geometry
+			_m1$2.makeScale(x, y, z);
+
+			this.applyMatrix4(_m1$2);
+			return this;
+		},
+		lookAt: function lookAt(vector) {
+			_obj.lookAt(vector);
+
+			_obj.updateMatrix();
+
+			this.applyMatrix4(_obj.matrix);
+			return this;
+		},
+		center: function center() {
+			this.computeBoundingBox();
+			this.boundingBox.getCenter(_offset).negate();
+			this.translate(_offset.x, _offset.y, _offset.z);
+			return this;
+		},
+		setFromPoints: function setFromPoints(points) {
+			var position = [];
+
+			for (var i = 0, l = points.length; i < l; i++) {
+				var point = points[i];
+				position.push(point.x, point.y, point.z || 0);
+			}
+
+			this.setAttribute('position', new Float32BufferAttribute(position, 3));
+			return this;
+		},
+		computeBoundingBox: function computeBoundingBox() {
+			if (this.boundingBox === null) {
+				this.boundingBox = new Box3();
+			}
+
+			var position = this.attributes.position;
+			var morphAttributesPosition = this.morphAttributes.position;
+
+			if (position && position.isGLBufferAttribute) {
+				console.error('THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box. Alternatively set "mesh.frustumCulled" to "false".', this);
+				this.boundingBox.set(new Vector3(-Infinity, -Infinity, -Infinity), new Vector3(+Infinity, +Infinity, +Infinity));
+				return;
+			}
+
+			if (position !== undefined) {
+				this.boundingBox.setFromBufferAttribute(position); // process morph attributes if present
+
+				if (morphAttributesPosition) {
+					for (var i = 0, il = morphAttributesPosition.length; i < il; i++) {
+						var morphAttribute = morphAttributesPosition[i];
+
+						_box$2.setFromBufferAttribute(morphAttribute);
+
+						if (this.morphTargetsRelative) {
+							_vector$4.addVectors(this.boundingBox.min, _box$2.min);
+
+							this.boundingBox.expandByPoint(_vector$4);
+
+							_vector$4.addVectors(this.boundingBox.max, _box$2.max);
+
+							this.boundingBox.expandByPoint(_vector$4);
+						} else {
+							this.boundingBox.expandByPoint(_box$2.min);
+							this.boundingBox.expandByPoint(_box$2.max);
+						}
+					}
+				}
+			} else {
+				this.boundingBox.makeEmpty();
+			}
+
+			if (isNaN(this.boundingBox.min.x) || isNaN(this.boundingBox.min.y) || isNaN(this.boundingBox.min.z)) {
+				console.error('THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this);
+			}
+		},
+		computeBoundingSphere: function computeBoundingSphere() {
+			if (this.boundingSphere === null) {
+				this.boundingSphere = new Sphere();
+			}
+
+			var position = this.attributes.position;
+			var morphAttributesPosition = this.morphAttributes.position;
+
+			if (position && position.isGLBufferAttribute) {
+				console.error('THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere. Alternatively set "mesh.frustumCulled" to "false".', this);
+				this.boundingSphere.set(new Vector3(), Infinity);
+				return;
+			}
+
+			if (position) {
+				// first, find the center of the bounding sphere
+				var center = this.boundingSphere.center;
+
+				_box$2.setFromBufferAttribute(position); // process morph attributes if present
+
+
+				if (morphAttributesPosition) {
+					for (var i = 0, il = morphAttributesPosition.length; i < il; i++) {
+						var morphAttribute = morphAttributesPosition[i];
+
+						_boxMorphTargets.setFromBufferAttribute(morphAttribute);
+
+						if (this.morphTargetsRelative) {
+							_vector$4.addVectors(_box$2.min, _boxMorphTargets.min);
+
+							_box$2.expandByPoint(_vector$4);
+
+							_vector$4.addVectors(_box$2.max, _boxMorphTargets.max);
+
+							_box$2.expandByPoint(_vector$4);
+						} else {
+							_box$2.expandByPoint(_boxMorphTargets.min);
+
+							_box$2.expandByPoint(_boxMorphTargets.max);
+						}
+					}
+				}
+
+				_box$2.getCenter(center); // second, try to find a boundingSphere with a radius smaller than the
+				// boundingSphere of the boundingBox: sqrt(3) smaller in the best case
+
+
+				var maxRadiusSq = 0;
+
+				for (var _i = 0, _il = position.count; _i < _il; _i++) {
+					_vector$4.fromBufferAttribute(position, _i);
+
+					maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$4));
+				} // process morph attributes if present
+
+
+				if (morphAttributesPosition) {
+					for (var _i2 = 0, _il2 = morphAttributesPosition.length; _i2 < _il2; _i2++) {
+						var _morphAttribute = morphAttributesPosition[_i2];
+						var morphTargetsRelative = this.morphTargetsRelative;
+
+						for (var j = 0, jl = _morphAttribute.count; j < jl; j++) {
+							_vector$4.fromBufferAttribute(_morphAttribute, j);
+
+							if (morphTargetsRelative) {
+								_offset.fromBufferAttribute(position, j);
+
+								_vector$4.add(_offset);
+							}
+
+							maxRadiusSq = Math.max(maxRadiusSq, center.distanceToSquared(_vector$4));
+						}
+					}
+				}
+
+				this.boundingSphere.radius = Math.sqrt(maxRadiusSq);
+
+				if (isNaN(this.boundingSphere.radius)) {
+					console.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this);
+				}
+			}
+		},
+		computeFaceNormals: function computeFaceNormals() {// backwards compatibility
+		},
+		computeTangents: function computeTangents() {
+			var index = this.index;
+			var attributes = this.attributes; // based on http://www.terathon.com/code/tangent.html
+			// (per vertex tangents)
+
+			if (index === null || attributes.position === undefined || attributes.normal === undefined || attributes.uv === undefined) {
+				console.error('THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)');
+				return;
+			}
+
+			var indices = index.array;
+			var positions = attributes.position.array;
+			var normals = attributes.normal.array;
+			var uvs = attributes.uv.array;
+			var nVertices = positions.length / 3;
+
+			if (attributes.tangent === undefined) {
+				this.setAttribute('tangent', new BufferAttribute(new Float32Array(4 * nVertices), 4));
+			}
+
+			var tangents = attributes.tangent.array;
+			var tan1 = [],
+					tan2 = [];
+
+			for (var i = 0; i < nVertices; i++) {
+				tan1[i] = new Vector3();
+				tan2[i] = new Vector3();
+			}
+
+			var vA = new Vector3(),
+					vB = new Vector3(),
+					vC = new Vector3(),
+					uvA = new Vector2(),
+					uvB = new Vector2(),
+					uvC = new Vector2(),
+					sdir = new Vector3(),
+					tdir = new Vector3();
+
+			function handleTriangle(a, b, c) {
+				vA.fromArray(positions, a * 3);
+				vB.fromArray(positions, b * 3);
+				vC.fromArray(positions, c * 3);
+				uvA.fromArray(uvs, a * 2);
+				uvB.fromArray(uvs, b * 2);
+				uvC.fromArray(uvs, c * 2);
+				vB.sub(vA);
+				vC.sub(vA);
+				uvB.sub(uvA);
+				uvC.sub(uvA);
+				var r = 1.0 / (uvB.x * uvC.y - uvC.x * uvB.y); // silently ignore degenerate uv triangles having coincident or colinear vertices
+
+				if (!isFinite(r)) return;
+				sdir.copy(vB).multiplyScalar(uvC.y).addScaledVector(vC, -uvB.y).multiplyScalar(r);
+				tdir.copy(vC).multiplyScalar(uvB.x).addScaledVector(vB, -uvC.x).multiplyScalar(r);
+				tan1[a].add(sdir);
+				tan1[b].add(sdir);
+				tan1[c].add(sdir);
+				tan2[a].add(tdir);
+				tan2[b].add(tdir);
+				tan2[c].add(tdir);
+			}
+
+			var groups = this.groups;
+
+			if (groups.length === 0) {
+				groups = [{
+					start: 0,
+					count: indices.length
+				}];
+			}
+
+			for (var _i3 = 0, il = groups.length; _i3 < il; ++_i3) {
+				var group = groups[_i3];
+				var start = group.start;
+				var count = group.count;
+
+				for (var j = start, jl = start + count; j < jl; j += 3) {
+					handleTriangle(indices[j + 0], indices[j + 1], indices[j + 2]);
+				}
+			}
+
+			var tmp = new Vector3(),
+					tmp2 = new Vector3();
+			var n = new Vector3(),
+					n2 = new Vector3();
+
+			function handleVertex(v) {
+				n.fromArray(normals, v * 3);
+				n2.copy(n);
+				var t = tan1[v]; // Gram-Schmidt orthogonalize
+
+				tmp.copy(t);
+				tmp.sub(n.multiplyScalar(n.dot(t))).normalize(); // Calculate handedness
+
+				tmp2.crossVectors(n2, t);
+				var test = tmp2.dot(tan2[v]);
+				var w = test < 0.0 ? -1.0 : 1.0;
+				tangents[v * 4] = tmp.x;
+				tangents[v * 4 + 1] = tmp.y;
+				tangents[v * 4 + 2] = tmp.z;
+				tangents[v * 4 + 3] = w;
+			}
+
+			for (var _i4 = 0, _il3 = groups.length; _i4 < _il3; ++_i4) {
+				var _group = groups[_i4];
+				var _start = _group.start;
+				var _count = _group.count;
+
+				for (var _j = _start, _jl = _start + _count; _j < _jl; _j += 3) {
+					handleVertex(indices[_j + 0]);
+					handleVertex(indices[_j + 1]);
+					handleVertex(indices[_j + 2]);
+				}
+			}
+		},
+		computeVertexNormals: function computeVertexNormals() {
+			var index = this.index;
+			var positionAttribute = this.getAttribute('position');
+
+			if (positionAttribute !== undefined) {
+				var normalAttribute = this.getAttribute('normal');
+
+				if (normalAttribute === undefined) {
+					normalAttribute = new BufferAttribute(new Float32Array(positionAttribute.count * 3), 3);
+					this.setAttribute('normal', normalAttribute);
+				} else {
+					// reset existing normals to zero
+					for (var i = 0, il = normalAttribute.count; i < il; i++) {
+						normalAttribute.setXYZ(i, 0, 0, 0);
+					}
+				}
+
+				var pA = new Vector3(),
+						pB = new Vector3(),
+						pC = new Vector3();
+				var nA = new Vector3(),
+						nB = new Vector3(),
+						nC = new Vector3();
+				var cb = new Vector3(),
+						ab = new Vector3(); // indexed elements
+
+				if (index) {
+					for (var _i5 = 0, _il4 = index.count; _i5 < _il4; _i5 += 3) {
+						var vA = index.getX(_i5 + 0);
+						var vB = index.getX(_i5 + 1);
+						var vC = index.getX(_i5 + 2);
+						pA.fromBufferAttribute(positionAttribute, vA);
+						pB.fromBufferAttribute(positionAttribute, vB);
+						pC.fromBufferAttribute(positionAttribute, vC);
+						cb.subVectors(pC, pB);
+						ab.subVectors(pA, pB);
+						cb.cross(ab);
+						nA.fromBufferAttribute(normalAttribute, vA);
+						nB.fromBufferAttribute(normalAttribute, vB);
+						nC.fromBufferAttribute(normalAttribute, vC);
+						nA.add(cb);
+						nB.add(cb);
+						nC.add(cb);
+						normalAttribute.setXYZ(vA, nA.x, nA.y, nA.z);
+						normalAttribute.setXYZ(vB, nB.x, nB.y, nB.z);
+						normalAttribute.setXYZ(vC, nC.x, nC.y, nC.z);
+					}
+				} else {
+					// non-indexed elements (unconnected triangle soup)
+					for (var _i6 = 0, _il5 = positionAttribute.count; _i6 < _il5; _i6 += 3) {
+						pA.fromBufferAttribute(positionAttribute, _i6 + 0);
+						pB.fromBufferAttribute(positionAttribute, _i6 + 1);
+						pC.fromBufferAttribute(positionAttribute, _i6 + 2);
+						cb.subVectors(pC, pB);
+						ab.subVectors(pA, pB);
+						cb.cross(ab);
+						normalAttribute.setXYZ(_i6 + 0, cb.x, cb.y, cb.z);
+						normalAttribute.setXYZ(_i6 + 1, cb.x, cb.y, cb.z);
+						normalAttribute.setXYZ(_i6 + 2, cb.x, cb.y, cb.z);
+					}
+				}
+
+				this.normalizeNormals();
+				normalAttribute.needsUpdate = true;
+			}
+		},
+		merge: function merge(geometry, offset) {
+			if (!(geometry && geometry.isBufferGeometry)) {
+				console.error('THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.', geometry);
+				return;
+			}
+
+			if (offset === undefined) {
+				offset = 0;
+				console.warn('THREE.BufferGeometry.merge(): Overwriting original geometry, starting at offset=0. ' + 'Use BufferGeometryUtils.mergeBufferGeometries() for lossless merge.');
+			}
+
+			var attributes = this.attributes;
+
+			for (var key in attributes) {
+				if (geometry.attributes[key] === undefined) continue;
+				var attribute1 = attributes[key];
+				var attributeArray1 = attribute1.array;
+				var attribute2 = geometry.attributes[key];
+				var attributeArray2 = attribute2.array;
+				var attributeOffset = attribute2.itemSize * offset;
+				var length = Math.min(attributeArray2.length, attributeArray1.length - attributeOffset);
+
+				for (var i = 0, j = attributeOffset; i < length; i++, j++) {
+					attributeArray1[j] = attributeArray2[i];
+				}
+			}
+
+			return this;
+		},
+		normalizeNormals: function normalizeNormals() {
+			var normals = this.attributes.normal;
+
+			for (var i = 0, il = normals.count; i < il; i++) {
+				_vector$4.fromBufferAttribute(normals, i);
+
+				_vector$4.normalize();
+
+				normals.setXYZ(i, _vector$4.x, _vector$4.y, _vector$4.z);
+			}
+		},
+		toNonIndexed: function toNonIndexed() {
+			function convertBufferAttribute(attribute, indices) {
+				var array = attribute.array;
+				var itemSize = attribute.itemSize;
+				var normalized = attribute.normalized;
+				var array2 = new array.constructor(indices.length * itemSize);
+				var index = 0,
+						index2 = 0;
+
+				for (var i = 0, l = indices.length; i < l; i++) {
+					index = indices[i] * itemSize;
+
+					for (var j = 0; j < itemSize; j++) {
+						array2[index2++] = array[index++];
+					}
+				}
+
+				return new BufferAttribute(array2, itemSize, normalized);
+			} //
+
+
+			if (this.index === null) {
+				console.warn('THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.');
+				return this;
+			}
+
+			var geometry2 = new BufferGeometry();
+			var indices = this.index.array;
+			var attributes = this.attributes; // attributes
+
+			for (var name in attributes) {
+				var attribute = attributes[name];
+				var newAttribute = convertBufferAttribute(attribute, indices);
+				geometry2.setAttribute(name, newAttribute);
+			} // morph attributes
+
+
+			var morphAttributes = this.morphAttributes;
+
+			for (var _name in morphAttributes) {
+				var morphArray = [];
+				var morphAttribute = morphAttributes[_name]; // morphAttribute: array of Float32BufferAttributes
+
+				for (var i = 0, il = morphAttribute.length; i < il; i++) {
+					var _attribute = morphAttribute[i];
+
+					var _newAttribute = convertBufferAttribute(_attribute, indices);
+
+					morphArray.push(_newAttribute);
+				}
+
+				geometry2.morphAttributes[_name] = morphArray;
+			}
+
+			geometry2.morphTargetsRelative = this.morphTargetsRelative; // groups
+
+			var groups = this.groups;
+
+			for (var _i7 = 0, l = groups.length; _i7 < l; _i7++) {
+				var group = groups[_i7];
+				geometry2.addGroup(group.start, group.count, group.materialIndex);
+			}
+
+			return geometry2;
+		},
+		toJSON: function toJSON() {
+			var data = {
+				metadata: {
+					version: 4.5,
+					type: 'BufferGeometry',
+					generator: 'BufferGeometry.toJSON'
+				}
+			}; // standard BufferGeometry serialization
+
+			data.uuid = this.uuid;
+			data.type = this.type;
+			if (this.name !== '') data.name = this.name;
+			if (Object.keys(this.userData).length > 0) data.userData = this.userData;
+
+			if (this.parameters !== undefined) {
+				var parameters = this.parameters;
+
+				for (var key in parameters) {
+					if (parameters[key] !== undefined) data[key] = parameters[key];
+				}
+
+				return data;
+			}
+
+			data.data = {
+				attributes: {}
+			};
+			var index = this.index;
+
+			if (index !== null) {
+				data.data.index = {
+					type: index.array.constructor.name,
+					array: Array.prototype.slice.call(index.array)
+				};
+			}
+
+			var attributes = this.attributes;
+
+			for (var _key in attributes) {
+				var attribute = attributes[_key];
+				var attributeData = attribute.toJSON(data.data);
+				if (attribute.name !== '') attributeData.name = attribute.name;
+				data.data.attributes[_key] = attributeData;
+			}
+
+			var morphAttributes = {};
+			var hasMorphAttributes = false;
+
+			for (var _key2 in this.morphAttributes) {
+				var attributeArray = this.morphAttributes[_key2];
+				var array = [];
+
+				for (var i = 0, il = attributeArray.length; i < il; i++) {
+					var _attribute2 = attributeArray[i];
+
+					var _attributeData = _attribute2.toJSON(data.data);
+
+					if (_attribute2.name !== '') _attributeData.name = _attribute2.name;
+					array.push(_attributeData);
+				}
+
+				if (array.length > 0) {
+					morphAttributes[_key2] = array;
+					hasMorphAttributes = true;
+				}
+			}
+
+			if (hasMorphAttributes) {
+				data.data.morphAttributes = morphAttributes;
+				data.data.morphTargetsRelative = this.morphTargetsRelative;
+			}
+
+			var groups = this.groups;
+
+			if (groups.length > 0) {
+				data.data.groups = JSON.parse(JSON.stringify(groups));
+			}
+
+			var boundingSphere = this.boundingSphere;
+
+			if (boundingSphere !== null) {
+				data.data.boundingSphere = {
+					center: boundingSphere.center.toArray(),
+					radius: boundingSphere.radius
+				};
+			}
+
+			return data;
+		},
+		clone: function clone() {
+			/*
+			 // Handle primitives
+				 const parameters = this.parameters;
+				 if ( parameters !== undefined ) {
+				 const values = [];
+				 for ( const key in parameters ) {
+				 values.push( parameters[ key ] );
+				 }
+				 const geometry = Object.create( this.constructor.prototype );
+			 this.constructor.apply( geometry, values );
+			 return geometry;
+				 }
+				 return new this.constructor().copy( this );
+			 */
+			return new BufferGeometry().copy(this);
+		},
+		copy: function copy(source) {
+			// reset
+			this.index = null;
+			this.attributes = {};
+			this.morphAttributes = {};
+			this.groups = [];
+			this.boundingBox = null;
+			this.boundingSphere = null; // used for storing cloned, shared data
+
+			var data = {}; // name
+
+			this.name = source.name; // index
+
+			var index = source.index;
+
+			if (index !== null) {
+				this.setIndex(index.clone(data));
+			} // attributes
+
+
+			var attributes = source.attributes;
+
+			for (var name in attributes) {
+				var attribute = attributes[name];
+				this.setAttribute(name, attribute.clone(data));
+			} // morph attributes
+
+
+			var morphAttributes = source.morphAttributes;
+
+			for (var _name2 in morphAttributes) {
+				var array = [];
+				var morphAttribute = morphAttributes[_name2]; // morphAttribute: array of Float32BufferAttributes
+
+				for (var i = 0, l = morphAttribute.length; i < l; i++) {
+					array.push(morphAttribute[i].clone(data));
+				}
+
+				this.morphAttributes[_name2] = array;
+			}
+
+			this.morphTargetsRelative = source.morphTargetsRelative; // groups
+
+			var groups = source.groups;
+
+			for (var _i8 = 0, _l = groups.length; _i8 < _l; _i8++) {
+				var group = groups[_i8];
+				this.addGroup(group.start, group.count, group.materialIndex);
+			} // bounding box
+
+
+			var boundingBox = source.boundingBox;
+
+			if (boundingBox !== null) {
+				this.boundingBox = boundingBox.clone();
+			} // bounding sphere
+
+
+			var boundingSphere = source.boundingSphere;
+
+			if (boundingSphere !== null) {
+				this.boundingSphere = boundingSphere.clone();
+			} // draw range
+
+
+			this.drawRange.start = source.drawRange.start;
+			this.drawRange.count = source.drawRange.count; // user data
+
+			this.userData = source.userData;
+			return this;
+		},
+		dispose: function dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
+	});
+
+	var _inverseMatrix = new Matrix4();
+
+	var _ray = new Ray();
+
+	var _sphere = new Sphere();
+
+	var _vA = new Vector3();
+
+	var _vB = new Vector3();
+
+	var _vC = new Vector3();
+
+	var _tempA = new Vector3();
+
+	var _tempB = new Vector3();
+
+	var _tempC = new Vector3();
+
+	var _morphA = new Vector3();
+
+	var _morphB = new Vector3();
+
+	var _morphC = new Vector3();
+
+	var _uvA = new Vector2();
+
+	var _uvB = new Vector2();
+
+	var _uvC = new Vector2();
+
+	var _intersectionPoint = new Vector3();
+
+	var _intersectionPointWorld = new Vector3();
+
+	function Mesh(geometry, material) {
+		if (geometry === void 0) {
+			geometry = new BufferGeometry();
+		}
+
+		if (material === void 0) {
+			material = new MeshBasicMaterial();
+		}
+
+		Object3D.call(this);
+		this.type = 'Mesh';
+		this.geometry = geometry;
+		this.material = material;
+		this.updateMorphTargets();
+	}
+
+	Mesh.prototype = Object.assign(Object.create(Object3D.prototype), {
+		constructor: Mesh,
+		isMesh: true,
+		copy: function copy(source) {
+			Object3D.prototype.copy.call(this, source);
+
+			if (source.morphTargetInfluences !== undefined) {
+				this.morphTargetInfluences = source.morphTargetInfluences.slice();
+			}
+
+			if (source.morphTargetDictionary !== undefined) {
+				this.morphTargetDictionary = Object.assign({}, source.morphTargetDictionary);
+			}
+
+			this.material = source.material;
+			this.geometry = source.geometry;
+			return this;
+		},
+		updateMorphTargets: function updateMorphTargets() {
+			var geometry = this.geometry;
+
+			if (geometry.isBufferGeometry) {
+				var morphAttributes = geometry.morphAttributes;
+				var keys = Object.keys(morphAttributes);
+
+				if (keys.length > 0) {
+					var morphAttribute = morphAttributes[keys[0]];
+
+					if (morphAttribute !== undefined) {
+						this.morphTargetInfluences = [];
+						this.morphTargetDictionary = {};
+
+						for (var m = 0, ml = morphAttribute.length; m < ml; m++) {
+							var name = morphAttribute[m].name || String(m);
+							this.morphTargetInfluences.push(0);
+							this.morphTargetDictionary[name] = m;
+						}
+					}
+				}
+			} else {
+				var morphTargets = geometry.morphTargets;
+
+				if (morphTargets !== undefined && morphTargets.length > 0) {
+					console.error('THREE.Mesh.updateMorphTargets() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+				}
+			}
+		},
+		raycast: function raycast(raycaster, intersects) {
+			var geometry = this.geometry;
+			var material = this.material;
+			var matrixWorld = this.matrixWorld;
+			if (material === undefined) return; // Checking boundingSphere distance to ray
+
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
+
+			_sphere.copy(geometry.boundingSphere);
+
+			_sphere.applyMatrix4(matrixWorld);
+
+			if (raycaster.ray.intersectsSphere(_sphere) === false) return; //
+
+			_inverseMatrix.copy(matrixWorld).invert();
+
+			_ray.copy(raycaster.ray).applyMatrix4(_inverseMatrix); // Check boundingBox before continuing
+
+
+			if (geometry.boundingBox !== null) {
+				if (_ray.intersectsBox(geometry.boundingBox) === false) return;
+			}
+
+			var intersection;
+
+			if (geometry.isBufferGeometry) {
+				var index = geometry.index;
+				var position = geometry.attributes.position;
+				var morphPosition = geometry.morphAttributes.position;
+				var morphTargetsRelative = geometry.morphTargetsRelative;
+				var uv = geometry.attributes.uv;
+				var uv2 = geometry.attributes.uv2;
+				var groups = geometry.groups;
+				var drawRange = geometry.drawRange;
+
+				if (index !== null) {
+					// indexed buffer geometry
+					if (Array.isArray(material)) {
+						for (var i = 0, il = groups.length; i < il; i++) {
+							var group = groups[i];
+							var groupMaterial = material[group.materialIndex];
+							var start = Math.max(group.start, drawRange.start);
+							var end = Math.min(group.start + group.count, drawRange.start + drawRange.count);
+
+							for (var j = start, jl = end; j < jl; j += 3) {
+								var a = index.getX(j);
+								var b = index.getX(j + 1);
+								var c = index.getX(j + 2);
+								intersection = checkBufferGeometryIntersection(this, groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c);
+
+								if (intersection) {
+									intersection.faceIndex = Math.floor(j / 3); // triangle number in indexed buffer semantics
+
+									intersection.face.materialIndex = group.materialIndex;
+									intersects.push(intersection);
+								}
+							}
+						}
+					} else {
+						var _start = Math.max(0, drawRange.start);
+
+						var _end = Math.min(index.count, drawRange.start + drawRange.count);
+
+						for (var _i = _start, _il = _end; _i < _il; _i += 3) {
+							var _a = index.getX(_i);
+
+							var _b = index.getX(_i + 1);
+
+							var _c = index.getX(_i + 2);
+
+							intersection = checkBufferGeometryIntersection(this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, _a, _b, _c);
+
+							if (intersection) {
+								intersection.faceIndex = Math.floor(_i / 3); // triangle number in indexed buffer semantics
+
+								intersects.push(intersection);
+							}
+						}
+					}
+				} else if (position !== undefined) {
+					// non-indexed buffer geometry
+					if (Array.isArray(material)) {
+						for (var _i2 = 0, _il2 = groups.length; _i2 < _il2; _i2++) {
+							var _group = groups[_i2];
+							var _groupMaterial = material[_group.materialIndex];
+
+							var _start2 = Math.max(_group.start, drawRange.start);
+
+							var _end2 = Math.min(_group.start + _group.count, drawRange.start + drawRange.count);
+
+							for (var _j = _start2, _jl = _end2; _j < _jl; _j += 3) {
+								var _a2 = _j;
+
+								var _b2 = _j + 1;
+
+								var _c2 = _j + 2;
+
+								intersection = checkBufferGeometryIntersection(this, _groupMaterial, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, _a2, _b2, _c2);
+
+								if (intersection) {
+									intersection.faceIndex = Math.floor(_j / 3); // triangle number in non-indexed buffer semantics
+
+									intersection.face.materialIndex = _group.materialIndex;
+									intersects.push(intersection);
+								}
+							}
+						}
+					} else {
+						var _start3 = Math.max(0, drawRange.start);
+
+						var _end3 = Math.min(position.count, drawRange.start + drawRange.count);
+
+						for (var _i3 = _start3, _il3 = _end3; _i3 < _il3; _i3 += 3) {
+							var _a3 = _i3;
+
+							var _b3 = _i3 + 1;
+
+							var _c3 = _i3 + 2;
+
+							intersection = checkBufferGeometryIntersection(this, material, raycaster, _ray, position, morphPosition, morphTargetsRelative, uv, uv2, _a3, _b3, _c3);
+
+							if (intersection) {
+								intersection.faceIndex = Math.floor(_i3 / 3); // triangle number in non-indexed buffer semantics
+
+								intersects.push(intersection);
+							}
+						}
+					}
+				}
+			} else if (geometry.isGeometry) {
+				console.error('THREE.Mesh.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+			}
+		}
+	});
+
+	function checkIntersection(object, material, raycaster, ray, pA, pB, pC, point) {
+		var intersect;
+
+		if (material.side === BackSide) {
+			intersect = ray.intersectTriangle(pC, pB, pA, true, point);
+		} else {
+			intersect = ray.intersectTriangle(pA, pB, pC, material.side !== DoubleSide, point);
+		}
+
+		if (intersect === null) return null;
+
+		_intersectionPointWorld.copy(point);
+
+		_intersectionPointWorld.applyMatrix4(object.matrixWorld);
+
+		var distance = raycaster.ray.origin.distanceTo(_intersectionPointWorld);
+		if (distance < raycaster.near || distance > raycaster.far) return null;
+		return {
+			distance: distance,
+			point: _intersectionPointWorld.clone(),
+			object: object
+		};
+	}
+
+	function checkBufferGeometryIntersection(object, material, raycaster, ray, position, morphPosition, morphTargetsRelative, uv, uv2, a, b, c) {
+		_vA.fromBufferAttribute(position, a);
+
+		_vB.fromBufferAttribute(position, b);
+
+		_vC.fromBufferAttribute(position, c);
+
+		var morphInfluences = object.morphTargetInfluences;
+
+		if (material.morphTargets && morphPosition && morphInfluences) {
+			_morphA.set(0, 0, 0);
+
+			_morphB.set(0, 0, 0);
+
+			_morphC.set(0, 0, 0);
+
+			for (var i = 0, il = morphPosition.length; i < il; i++) {
+				var influence = morphInfluences[i];
+				var morphAttribute = morphPosition[i];
+				if (influence === 0) continue;
+
+				_tempA.fromBufferAttribute(morphAttribute, a);
+
+				_tempB.fromBufferAttribute(morphAttribute, b);
+
+				_tempC.fromBufferAttribute(morphAttribute, c);
+
+				if (morphTargetsRelative) {
+					_morphA.addScaledVector(_tempA, influence);
+
+					_morphB.addScaledVector(_tempB, influence);
+
+					_morphC.addScaledVector(_tempC, influence);
+				} else {
+					_morphA.addScaledVector(_tempA.sub(_vA), influence);
+
+					_morphB.addScaledVector(_tempB.sub(_vB), influence);
+
+					_morphC.addScaledVector(_tempC.sub(_vC), influence);
+				}
+			}
+
+			_vA.add(_morphA);
+
+			_vB.add(_morphB);
+
+			_vC.add(_morphC);
+		}
+
+		if (object.isSkinnedMesh && material.skinning) {
+			object.boneTransform(a, _vA);
+			object.boneTransform(b, _vB);
+			object.boneTransform(c, _vC);
+		}
+
+		var intersection = checkIntersection(object, material, raycaster, ray, _vA, _vB, _vC, _intersectionPoint);
+
+		if (intersection) {
+			if (uv) {
+				_uvA.fromBufferAttribute(uv, a);
+
+				_uvB.fromBufferAttribute(uv, b);
+
+				_uvC.fromBufferAttribute(uv, c);
+
+				intersection.uv = Triangle.getUV(_intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2());
+			}
+
+			if (uv2) {
+				_uvA.fromBufferAttribute(uv2, a);
+
+				_uvB.fromBufferAttribute(uv2, b);
+
+				_uvC.fromBufferAttribute(uv2, c);
+
+				intersection.uv2 = Triangle.getUV(_intersectionPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2());
+			}
+
+			var face = {
+				a: a,
+				b: b,
+				c: c,
+				normal: new Vector3(),
+				materialIndex: 0
+			};
+			Triangle.getNormal(_vA, _vB, _vC, face.normal);
+			intersection.face = face;
+		}
+
+		return intersection;
+	}
+
+	var BoxGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(BoxGeometry, _BufferGeometry);
+
+		function BoxGeometry(width, height, depth, widthSegments, heightSegments, depthSegments) {
+			var _this;
+
+			if (width === void 0) {
+				width = 1;
+			}
+
+			if (height === void 0) {
+				height = 1;
+			}
+
+			if (depth === void 0) {
+				depth = 1;
+			}
+
+			if (widthSegments === void 0) {
+				widthSegments = 1;
+			}
+
+			if (heightSegments === void 0) {
+				heightSegments = 1;
+			}
+
+			if (depthSegments === void 0) {
+				depthSegments = 1;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'BoxGeometry';
+			_this.parameters = {
+				width: width,
+				height: height,
+				depth: depth,
+				widthSegments: widthSegments,
+				heightSegments: heightSegments,
+				depthSegments: depthSegments
+			};
+
+			var scope = _assertThisInitialized(_this); // segments
+
+
+			widthSegments = Math.floor(widthSegments);
+			heightSegments = Math.floor(heightSegments);
+			depthSegments = Math.floor(depthSegments); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // helper variables
+
+			var numberOfVertices = 0;
+			var groupStart = 0; // build each side of the box geometry
+
+			buildPlane('z', 'y', 'x', -1, -1, depth, height, width, depthSegments, heightSegments, 0); // px
+
+			buildPlane('z', 'y', 'x', 1, -1, depth, height, -width, depthSegments, heightSegments, 1); // nx
+
+			buildPlane('x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2); // py
+
+			buildPlane('x', 'z', 'y', 1, -1, width, depth, -height, widthSegments, depthSegments, 3); // ny
+
+			buildPlane('x', 'y', 'z', 1, -1, width, height, depth, widthSegments, heightSegments, 4); // pz
+
+			buildPlane('x', 'y', 'z', -1, -1, width, height, -depth, widthSegments, heightSegments, 5); // nz
+			// build geometry
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+
+			function buildPlane(u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex) {
+				var segmentWidth = width / gridX;
+				var segmentHeight = height / gridY;
+				var widthHalf = width / 2;
+				var heightHalf = height / 2;
+				var depthHalf = depth / 2;
+				var gridX1 = gridX + 1;
+				var gridY1 = gridY + 1;
+				var vertexCounter = 0;
+				var groupCount = 0;
+				var vector = new Vector3(); // generate vertices, normals and uvs
+
+				for (var iy = 0; iy < gridY1; iy++) {
+					var y = iy * segmentHeight - heightHalf;
+
+					for (var ix = 0; ix < gridX1; ix++) {
+						var x = ix * segmentWidth - widthHalf; // set values to correct vector component
+
+						vector[u] = x * udir;
+						vector[v] = y * vdir;
+						vector[w] = depthHalf; // now apply vector to vertex buffer
+
+						vertices.push(vector.x, vector.y, vector.z); // set values to correct vector component
+
+						vector[u] = 0;
+						vector[v] = 0;
+						vector[w] = depth > 0 ? 1 : -1; // now apply vector to normal buffer
+
+						normals.push(vector.x, vector.y, vector.z); // uvs
+
+						uvs.push(ix / gridX);
+						uvs.push(1 - iy / gridY); // counters
+
+						vertexCounter += 1;
+					}
+				} // indices
+				// 1. you need three indices to draw a single face
+				// 2. a single segment consists of two faces
+				// 3. so we need to generate six (2*3) indices per segment
+
+
+				for (var _iy = 0; _iy < gridY; _iy++) {
+					for (var _ix = 0; _ix < gridX; _ix++) {
+						var a = numberOfVertices + _ix + gridX1 * _iy;
+						var b = numberOfVertices + _ix + gridX1 * (_iy + 1);
+						var c = numberOfVertices + (_ix + 1) + gridX1 * (_iy + 1);
+						var d = numberOfVertices + (_ix + 1) + gridX1 * _iy; // faces
+
+						indices.push(a, b, d);
+						indices.push(b, c, d); // increase counter
+
+						groupCount += 6;
+					}
+				} // add a group to the geometry. this will ensure multi material support
+
+
+				scope.addGroup(groupStart, groupCount, materialIndex); // calculate new start value for groups
+
+				groupStart += groupCount; // update total number of vertices
+
+				numberOfVertices += vertexCounter;
+			}
+
+			return _this;
+		}
+
+		return BoxGeometry;
+	}(BufferGeometry);
+
+	/**
+	 * Uniform Utilities
+	 */
+	function cloneUniforms(src) {
+		var dst = {};
+
+		for (var u in src) {
+			dst[u] = {};
+
+			for (var p in src[u]) {
+				var property = src[u][p];
+
+				if (property && (property.isColor || property.isMatrix3 || property.isMatrix4 || property.isVector2 || property.isVector3 || property.isVector4 || property.isTexture || property.isQuaternion)) {
+					dst[u][p] = property.clone();
+				} else if (Array.isArray(property)) {
+					dst[u][p] = property.slice();
+				} else {
+					dst[u][p] = property;
+				}
+			}
+		}
+
+		return dst;
+	}
+	function mergeUniforms(uniforms) {
+		var merged = {};
+
+		for (var u = 0; u < uniforms.length; u++) {
+			var tmp = cloneUniforms(uniforms[u]);
+
+			for (var p in tmp) {
+				merged[p] = tmp[p];
+			}
+		}
+
+		return merged;
+	} // Legacy
+
+	var UniformsUtils = {
+		clone: cloneUniforms,
+		merge: mergeUniforms
+	};
+
+	var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";
+
+	var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";
+
+	/**
+	 * parameters = {
+	 *	defines: { "label" : "value" },
+	 *	uniforms: { "parameter1": { value: 1.0 }, "parameter2": { value2: 2 } },
+	 *
+	 *	fragmentShader: <string>,
+	 *	vertexShader: <string>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	lights: <bool>,
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 * }
+	 */
+
+	function ShaderMaterial(parameters) {
+		Material.call(this);
+		this.type = 'ShaderMaterial';
+		this.defines = {};
+		this.uniforms = {};
+		this.vertexShader = default_vertex;
+		this.fragmentShader = default_fragment;
+		this.linewidth = 1;
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+		this.fog = false; // set to use scene fog
+
+		this.lights = false; // set to use scene lights
+
+		this.clipping = false; // set to use user-defined clipping planes
+
+		this.skinning = false; // set to use skinning attribute streams
+
+		this.morphTargets = false; // set to use morph targets
+
+		this.morphNormals = false; // set to use morph normals
+
+		this.extensions = {
+			derivatives: false,
+			// set to use derivatives
+			fragDepth: false,
+			// set to use fragment depth values
+			drawBuffers: false,
+			// set to use draw buffers
+			shaderTextureLOD: false // set to use shader texture LOD
+
+		}; // When rendered geometry doesn't include these attributes but the material does,
+		// use these default values in WebGL. This avoids errors when buffer data is missing.
+
+		this.defaultAttributeValues = {
+			'color': [1, 1, 1],
+			'uv': [0, 0],
+			'uv2': [0, 0]
+		};
+		this.index0AttributeName = undefined;
+		this.uniformsNeedUpdate = false;
+		this.glslVersion = null;
+
+		if (parameters !== undefined) {
+			if (parameters.attributes !== undefined) {
+				console.error('THREE.ShaderMaterial: attributes should now be defined in THREE.BufferGeometry instead.');
+			}
+
+			this.setValues(parameters);
+		}
+	}
+
+	ShaderMaterial.prototype = Object.create(Material.prototype);
+	ShaderMaterial.prototype.constructor = ShaderMaterial;
+	ShaderMaterial.prototype.isShaderMaterial = true;
+
+	ShaderMaterial.prototype.copy = function (source) {
+		Material.prototype.copy.call(this, source);
+		this.fragmentShader = source.fragmentShader;
+		this.vertexShader = source.vertexShader;
+		this.uniforms = cloneUniforms(source.uniforms);
+		this.defines = Object.assign({}, source.defines);
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+		this.lights = source.lights;
+		this.clipping = source.clipping;
+		this.skinning = source.skinning;
+		this.morphTargets = source.morphTargets;
+		this.morphNormals = source.morphNormals;
+		this.extensions = Object.assign({}, source.extensions);
+		this.glslVersion = source.glslVersion;
+		return this;
+	};
+
+	ShaderMaterial.prototype.toJSON = function (meta) {
+		var data = Material.prototype.toJSON.call(this, meta);
+		data.glslVersion = this.glslVersion;
+		data.uniforms = {};
+
+		for (var name in this.uniforms) {
+			var uniform = this.uniforms[name];
+			var value = uniform.value;
+
+			if (value && value.isTexture) {
+				data.uniforms[name] = {
+					type: 't',
+					value: value.toJSON(meta).uuid
+				};
+			} else if (value && value.isColor) {
+				data.uniforms[name] = {
+					type: 'c',
+					value: value.getHex()
+				};
+			} else if (value && value.isVector2) {
+				data.uniforms[name] = {
+					type: 'v2',
+					value: value.toArray()
+				};
+			} else if (value && value.isVector3) {
+				data.uniforms[name] = {
+					type: 'v3',
+					value: value.toArray()
+				};
+			} else if (value && value.isVector4) {
+				data.uniforms[name] = {
+					type: 'v4',
+					value: value.toArray()
+				};
+			} else if (value && value.isMatrix3) {
+				data.uniforms[name] = {
+					type: 'm3',
+					value: value.toArray()
+				};
+			} else if (value && value.isMatrix4) {
+				data.uniforms[name] = {
+					type: 'm4',
+					value: value.toArray()
+				};
+			} else {
+				data.uniforms[name] = {
+					value: value
+				}; // note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far
+			}
+		}
+
+		if (Object.keys(this.defines).length > 0) data.defines = this.defines;
+		data.vertexShader = this.vertexShader;
+		data.fragmentShader = this.fragmentShader;
+		var extensions = {};
+
+		for (var key in this.extensions) {
+			if (this.extensions[key] === true) extensions[key] = true;
+		}
+
+		if (Object.keys(extensions).length > 0) data.extensions = extensions;
+		return data;
+	};
+
+	function Camera() {
+		Object3D.call(this);
+		this.type = 'Camera';
+		this.matrixWorldInverse = new Matrix4();
+		this.projectionMatrix = new Matrix4();
+		this.projectionMatrixInverse = new Matrix4();
+	}
+
+	Camera.prototype = Object.assign(Object.create(Object3D.prototype), {
+		constructor: Camera,
+		isCamera: true,
+		copy: function copy(source, recursive) {
+			Object3D.prototype.copy.call(this, source, recursive);
+			this.matrixWorldInverse.copy(source.matrixWorldInverse);
+			this.projectionMatrix.copy(source.projectionMatrix);
+			this.projectionMatrixInverse.copy(source.projectionMatrixInverse);
+			return this;
+		},
+		getWorldDirection: function getWorldDirection(target) {
+			if (target === undefined) {
+				console.warn('THREE.Camera: .getWorldDirection() target is now required');
+				target = new Vector3();
+			}
+
+			this.updateWorldMatrix(true, false);
+			var e = this.matrixWorld.elements;
+			return target.set(-e[8], -e[9], -e[10]).normalize();
+		},
+		updateMatrixWorld: function updateMatrixWorld(force) {
+			Object3D.prototype.updateMatrixWorld.call(this, force);
+			this.matrixWorldInverse.copy(this.matrixWorld).invert();
+		},
+		updateWorldMatrix: function updateWorldMatrix(updateParents, updateChildren) {
+			Object3D.prototype.updateWorldMatrix.call(this, updateParents, updateChildren);
+			this.matrixWorldInverse.copy(this.matrixWorld).invert();
+		},
+		clone: function clone() {
+			return new this.constructor().copy(this);
+		}
+	});
+
+	function PerspectiveCamera(fov, aspect, near, far) {
+		if (fov === void 0) {
+			fov = 50;
+		}
+
+		if (aspect === void 0) {
+			aspect = 1;
+		}
+
+		if (near === void 0) {
+			near = 0.1;
+		}
+
+		if (far === void 0) {
+			far = 2000;
+		}
+
+		Camera.call(this);
+		this.type = 'PerspectiveCamera';
+		this.fov = fov;
+		this.zoom = 1;
+		this.near = near;
+		this.far = far;
+		this.focus = 10;
+		this.aspect = aspect;
+		this.view = null;
+		this.filmGauge = 35; // width of the film (default in millimeters)
+
+		this.filmOffset = 0; // horizontal film offset (same unit as gauge)
+
+		this.updateProjectionMatrix();
+	}
+
+	PerspectiveCamera.prototype = Object.assign(Object.create(Camera.prototype), {
+		constructor: PerspectiveCamera,
+		isPerspectiveCamera: true,
+		copy: function copy(source, recursive) {
+			Camera.prototype.copy.call(this, source, recursive);
+			this.fov = source.fov;
+			this.zoom = source.zoom;
+			this.near = source.near;
+			this.far = source.far;
+			this.focus = source.focus;
+			this.aspect = source.aspect;
+			this.view = source.view === null ? null : Object.assign({}, source.view);
+			this.filmGauge = source.filmGauge;
+			this.filmOffset = source.filmOffset;
+			return this;
+		},
+
+		/**
+		 * Sets the FOV by focal length in respect to the current .filmGauge.
+		 *
+		 * The default film gauge is 35, so that the focal length can be specified for
+		 * a 35mm (full frame) camera.
+		 *
+		 * Values for focal length and film gauge must have the same unit.
+		 */
+		setFocalLength: function setFocalLength(focalLength) {
+			/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */
+			var vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
+			this.fov = MathUtils.RAD2DEG * 2 * Math.atan(vExtentSlope);
+			this.updateProjectionMatrix();
+		},
+
+		/**
+		 * Calculates the focal length from the current .fov and .filmGauge.
+		 */
+		getFocalLength: function getFocalLength() {
+			var vExtentSlope = Math.tan(MathUtils.DEG2RAD * 0.5 * this.fov);
+			return 0.5 * this.getFilmHeight() / vExtentSlope;
+		},
+		getEffectiveFOV: function getEffectiveFOV() {
+			return MathUtils.RAD2DEG * 2 * Math.atan(Math.tan(MathUtils.DEG2RAD * 0.5 * this.fov) / this.zoom);
+		},
+		getFilmWidth: function getFilmWidth() {
+			// film not completely covered in portrait format (aspect < 1)
+			return this.filmGauge * Math.min(this.aspect, 1);
+		},
+		getFilmHeight: function getFilmHeight() {
+			// film not completely covered in landscape format (aspect > 1)
+			return this.filmGauge / Math.max(this.aspect, 1);
+		},
+
+		/**
+		 * Sets an offset in a larger frustum. This is useful for multi-window or
+		 * multi-monitor/multi-machine setups.
+		 *
+		 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
+		 * the monitors are in grid like this
+		 *
+		 *	 +---+---+---+
+		 *	 | A | B | C |
+		 *	 +---+---+---+
+		 *	 | D | E | F |
+		 *	 +---+---+---+
+		 *
+		 * then for each monitor you would call it like this
+		 *
+		 *	 const w = 1920;
+		 *	 const h = 1080;
+		 *	 const fullWidth = w * 3;
+		 *	 const fullHeight = h * 2;
+		 *
+		 *	 --A--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
+		 *	 --B--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
+		 *	 --C--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
+		 *	 --D--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
+		 *	 --E--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
+		 *	 --F--
+		 *	 camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
+		 *
+		 *	 Note there is no reason monitors have to be the same size or in a grid.
+		 */
+		setViewOffset: function setViewOffset(fullWidth, fullHeight, x, y, width, height) {
+			this.aspect = fullWidth / fullHeight;
+
+			if (this.view === null) {
+				this.view = {
+					enabled: true,
+					fullWidth: 1,
+					fullHeight: 1,
+					offsetX: 0,
+					offsetY: 0,
+					width: 1,
+					height: 1
+				};
+			}
+
+			this.view.enabled = true;
+			this.view.fullWidth = fullWidth;
+			this.view.fullHeight = fullHeight;
+			this.view.offsetX = x;
+			this.view.offsetY = y;
+			this.view.width = width;
+			this.view.height = height;
+			this.updateProjectionMatrix();
+		},
+		clearViewOffset: function clearViewOffset() {
+			if (this.view !== null) {
+				this.view.enabled = false;
+			}
+
+			this.updateProjectionMatrix();
+		},
+		updateProjectionMatrix: function updateProjectionMatrix() {
+			var near = this.near;
+			var top = near * Math.tan(MathUtils.DEG2RAD * 0.5 * this.fov) / this.zoom;
+			var height = 2 * top;
+			var width = this.aspect * height;
+			var left = -0.5 * width;
+			var view = this.view;
+
+			if (this.view !== null && this.view.enabled) {
+				var fullWidth = view.fullWidth,
+						fullHeight = view.fullHeight;
+				left += view.offsetX * width / fullWidth;
+				top -= view.offsetY * height / fullHeight;
+				width *= view.width / fullWidth;
+				height *= view.height / fullHeight;
+			}
+
+			var skew = this.filmOffset;
+			if (skew !== 0) left += near * skew / this.getFilmWidth();
+			this.projectionMatrix.makePerspective(left, left + width, top, top - height, near, this.far);
+			this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
+		},
+		toJSON: function toJSON(meta) {
+			var data = Object3D.prototype.toJSON.call(this, meta);
+			data.object.fov = this.fov;
+			data.object.zoom = this.zoom;
+			data.object.near = this.near;
+			data.object.far = this.far;
+			data.object.focus = this.focus;
+			data.object.aspect = this.aspect;
+			if (this.view !== null) data.object.view = Object.assign({}, this.view);
+			data.object.filmGauge = this.filmGauge;
+			data.object.filmOffset = this.filmOffset;
+			return data;
+		}
+	});
+
+	var fov = 90,
+			aspect = 1;
+
+	var CubeCamera = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(CubeCamera, _Object3D);
+
+		function CubeCamera(near, far, renderTarget) {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'CubeCamera';
+
+			if (renderTarget.isWebGLCubeRenderTarget !== true) {
+				console.error('THREE.CubeCamera: The constructor now expects an instance of WebGLCubeRenderTarget as third parameter.');
+				return _assertThisInitialized(_this);
+			}
+
+			_this.renderTarget = renderTarget;
+			var cameraPX = new PerspectiveCamera(fov, aspect, near, far);
+			cameraPX.layers = _this.layers;
+			cameraPX.up.set(0, -1, 0);
+			cameraPX.lookAt(new Vector3(1, 0, 0));
+
+			_this.add(cameraPX);
+
+			var cameraNX = new PerspectiveCamera(fov, aspect, near, far);
+			cameraNX.layers = _this.layers;
+			cameraNX.up.set(0, -1, 0);
+			cameraNX.lookAt(new Vector3(-1, 0, 0));
+
+			_this.add(cameraNX);
+
+			var cameraPY = new PerspectiveCamera(fov, aspect, near, far);
+			cameraPY.layers = _this.layers;
+			cameraPY.up.set(0, 0, 1);
+			cameraPY.lookAt(new Vector3(0, 1, 0));
+
+			_this.add(cameraPY);
+
+			var cameraNY = new PerspectiveCamera(fov, aspect, near, far);
+			cameraNY.layers = _this.layers;
+			cameraNY.up.set(0, 0, -1);
+			cameraNY.lookAt(new Vector3(0, -1, 0));
+
+			_this.add(cameraNY);
+
+			var cameraPZ = new PerspectiveCamera(fov, aspect, near, far);
+			cameraPZ.layers = _this.layers;
+			cameraPZ.up.set(0, -1, 0);
+			cameraPZ.lookAt(new Vector3(0, 0, 1));
+
+			_this.add(cameraPZ);
+
+			var cameraNZ = new PerspectiveCamera(fov, aspect, near, far);
+			cameraNZ.layers = _this.layers;
+			cameraNZ.up.set(0, -1, 0);
+			cameraNZ.lookAt(new Vector3(0, 0, -1));
+
+			_this.add(cameraNZ);
+
+			return _this;
+		}
+
+		var _proto = CubeCamera.prototype;
+
+		_proto.update = function update(renderer, scene) {
+			if (this.parent === null) this.updateMatrixWorld();
+			var renderTarget = this.renderTarget;
+			var _this$children = this.children,
+					cameraPX = _this$children[0],
+					cameraNX = _this$children[1],
+					cameraPY = _this$children[2],
+					cameraNY = _this$children[3],
+					cameraPZ = _this$children[4],
+					cameraNZ = _this$children[5];
+			var currentXrEnabled = renderer.xr.enabled;
+			var currentRenderTarget = renderer.getRenderTarget();
+			renderer.xr.enabled = false;
+			var generateMipmaps = renderTarget.texture.generateMipmaps;
+			renderTarget.texture.generateMipmaps = false;
+			renderer.setRenderTarget(renderTarget, 0);
+			renderer.render(scene, cameraPX);
+			renderer.setRenderTarget(renderTarget, 1);
+			renderer.render(scene, cameraNX);
+			renderer.setRenderTarget(renderTarget, 2);
+			renderer.render(scene, cameraPY);
+			renderer.setRenderTarget(renderTarget, 3);
+			renderer.render(scene, cameraNY);
+			renderer.setRenderTarget(renderTarget, 4);
+			renderer.render(scene, cameraPZ);
+			renderTarget.texture.generateMipmaps = generateMipmaps;
+			renderer.setRenderTarget(renderTarget, 5);
+			renderer.render(scene, cameraNZ);
+			renderer.setRenderTarget(currentRenderTarget);
+			renderer.xr.enabled = currentXrEnabled;
+		};
+
+		return CubeCamera;
+	}(Object3D);
+
+	var CubeTexture = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(CubeTexture, _Texture);
+
+		function CubeTexture(images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding) {
+			var _this;
+
+			images = images !== undefined ? images : [];
+			mapping = mapping !== undefined ? mapping : CubeReflectionMapping;
+			format = format !== undefined ? format : RGBFormat;
+			_this = _Texture.call(this, images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding) || this; // Why CubeTexture._needsFlipEnvMap is necessary:
+			//
+			// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)
+			// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,
+			// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.
+			// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped
+			// and the flag _needsFlipEnvMap controls this conversion. The flip is not required (and thus _needsFlipEnvMap is set to false)
+			// when using WebGLCubeRenderTarget.texture as a cube texture.
+
+			_this._needsFlipEnvMap = true;
+			_this.flipY = false;
+			return _this;
+		}
+
+		_createClass(CubeTexture, [{
+			key: "images",
+			get: function get() {
+				return this.image;
+			},
+			set: function set(value) {
+				this.image = value;
+			}
+		}]);
+
+		return CubeTexture;
+	}(Texture);
+
+	CubeTexture.prototype.isCubeTexture = true;
+
+	var WebGLCubeRenderTarget = /*#__PURE__*/function (_WebGLRenderTarget) {
+		_inheritsLoose(WebGLCubeRenderTarget, _WebGLRenderTarget);
+
+		function WebGLCubeRenderTarget(size, options, dummy) {
+			var _this;
+
+			if (Number.isInteger(options)) {
+				console.warn('THREE.WebGLCubeRenderTarget: constructor signature is now WebGLCubeRenderTarget( size, options )');
+				options = dummy;
+			}
+
+			_this = _WebGLRenderTarget.call(this, size, size, options) || this;
+			options = options || {};
+			_this.texture = new CubeTexture(undefined, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.encoding);
+			_this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
+			_this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
+			_this.texture._needsFlipEnvMap = false;
+			return _this;
+		}
+
+		var _proto = WebGLCubeRenderTarget.prototype;
+
+		_proto.fromEquirectangularTexture = function fromEquirectangularTexture(renderer, texture) {
+			this.texture.type = texture.type;
+			this.texture.format = RGBAFormat; // see #18859
+
+			this.texture.encoding = texture.encoding;
+			this.texture.generateMipmaps = texture.generateMipmaps;
+			this.texture.minFilter = texture.minFilter;
+			this.texture.magFilter = texture.magFilter;
+			var shader = {
+				uniforms: {
+					tEquirect: {
+						value: null
+					}
+				},
+				vertexShader:
+				/* glsl */
+				"\n\n\t\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t\tvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\n\t\t\t\t\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n\n\t\t\t\t}\n\n\t\t\t\tvoid main() {\n\n\t\t\t\t\tvWorldDirection = transformDirection( position, modelMatrix );\n\n\t\t\t\t\t#include <begin_vertex>\n\t\t\t\t\t#include <project_vertex>\n\n\t\t\t\t}\n\t\t\t",
+				fragmentShader:
+				/* glsl */
+				"\n\n\t\t\t\tuniform sampler2D tEquirect;\n\n\t\t\t\tvarying vec3 vWorldDirection;\n\n\t\t\t\t#include <common>\n\n\t\t\t\tvoid main() {\n\n\t\t\t\t\tvec3 direction = normalize( vWorldDirection );\n\n\t\t\t\t\tvec2 sampleUV = equirectUv( direction );\n\n\t\t\t\t\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\n\t\t\t\t}\n\t\t\t"
+			};
+			var geometry = new BoxGeometry(5, 5, 5);
+			var material = new ShaderMaterial({
+				name: 'CubemapFromEquirect',
+				uniforms: cloneUniforms(shader.uniforms),
+				vertexShader: shader.vertexShader,
+				fragmentShader: shader.fragmentShader,
+				side: BackSide,
+				blending: NoBlending
+			});
+			material.uniforms.tEquirect.value = texture;
+			var mesh = new Mesh(geometry, material);
+			var currentMinFilter = texture.minFilter; // Avoid blurred poles
+
+			if (texture.minFilter === LinearMipmapLinearFilter) texture.minFilter = LinearFilter;
+			var camera = new CubeCamera(1, 10, this);
+			camera.update(renderer, mesh);
+			texture.minFilter = currentMinFilter;
+			mesh.geometry.dispose();
+			mesh.material.dispose();
+			return this;
+		};
+
+		_proto.clear = function clear(renderer, color, depth, stencil) {
+			var currentRenderTarget = renderer.getRenderTarget();
+
+			for (var i = 0; i < 6; i++) {
+				renderer.setRenderTarget(this, i);
+				renderer.clear(color, depth, stencil);
+			}
+
+			renderer.setRenderTarget(currentRenderTarget);
+		};
+
+		return WebGLCubeRenderTarget;
+	}(WebGLRenderTarget);
+
+	WebGLCubeRenderTarget.prototype.isWebGLCubeRenderTarget = true;
+
+	var DataTexture = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(DataTexture, _Texture);
+
+		function DataTexture(data, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding) {
+			var _this;
+
+			_this = _Texture.call(this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding) || this;
+			_this.image = {
+				data: data || null,
+				width: width || 1,
+				height: height || 1
+			};
+			_this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
+			_this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
+			_this.generateMipmaps = false;
+			_this.flipY = false;
+			_this.unpackAlignment = 1;
+			_this.needsUpdate = true;
+			return _this;
+		}
+
+		return DataTexture;
+	}(Texture);
+
+	DataTexture.prototype.isDataTexture = true;
+
+	var _sphere$1 = /*@__PURE__*/new Sphere();
+
+	var _vector$5 = /*@__PURE__*/new Vector3();
+
+	var Frustum = /*#__PURE__*/function () {
+		function Frustum(p0, p1, p2, p3, p4, p5) {
+			if (p0 === void 0) {
+				p0 = new Plane();
+			}
+
+			if (p1 === void 0) {
+				p1 = new Plane();
+			}
+
+			if (p2 === void 0) {
+				p2 = new Plane();
+			}
+
+			if (p3 === void 0) {
+				p3 = new Plane();
+			}
+
+			if (p4 === void 0) {
+				p4 = new Plane();
+			}
+
+			if (p5 === void 0) {
+				p5 = new Plane();
+			}
+
+			this.planes = [p0, p1, p2, p3, p4, p5];
+		}
+
+		var _proto = Frustum.prototype;
+
+		_proto.set = function set(p0, p1, p2, p3, p4, p5) {
+			var planes = this.planes;
+			planes[0].copy(p0);
+			planes[1].copy(p1);
+			planes[2].copy(p2);
+			planes[3].copy(p3);
+			planes[4].copy(p4);
+			planes[5].copy(p5);
+			return this;
+		};
+
+		_proto.copy = function copy(frustum) {
+			var planes = this.planes;
+
+			for (var i = 0; i < 6; i++) {
+				planes[i].copy(frustum.planes[i]);
+			}
+
+			return this;
+		};
+
+		_proto.setFromProjectionMatrix = function setFromProjectionMatrix(m) {
+			var planes = this.planes;
+			var me = m.elements;
+			var me0 = me[0],
+					me1 = me[1],
+					me2 = me[2],
+					me3 = me[3];
+			var me4 = me[4],
+					me5 = me[5],
+					me6 = me[6],
+					me7 = me[7];
+			var me8 = me[8],
+					me9 = me[9],
+					me10 = me[10],
+					me11 = me[11];
+			var me12 = me[12],
+					me13 = me[13],
+					me14 = me[14],
+					me15 = me[15];
+			planes[0].setComponents(me3 - me0, me7 - me4, me11 - me8, me15 - me12).normalize();
+			planes[1].setComponents(me3 + me0, me7 + me4, me11 + me8, me15 + me12).normalize();
+			planes[2].setComponents(me3 + me1, me7 + me5, me11 + me9, me15 + me13).normalize();
+			planes[3].setComponents(me3 - me1, me7 - me5, me11 - me9, me15 - me13).normalize();
+			planes[4].setComponents(me3 - me2, me7 - me6, me11 - me10, me15 - me14).normalize();
+			planes[5].setComponents(me3 + me2, me7 + me6, me11 + me10, me15 + me14).normalize();
+			return this;
+		};
+
+		_proto.intersectsObject = function intersectsObject(object) {
+			var geometry = object.geometry;
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
+
+			_sphere$1.copy(geometry.boundingSphere).applyMatrix4(object.matrixWorld);
+
+			return this.intersectsSphere(_sphere$1);
+		};
+
+		_proto.intersectsSprite = function intersectsSprite(sprite) {
+			_sphere$1.center.set(0, 0, 0);
+
+			_sphere$1.radius = 0.7071067811865476;
+
+			_sphere$1.applyMatrix4(sprite.matrixWorld);
+
+			return this.intersectsSphere(_sphere$1);
+		};
+
+		_proto.intersectsSphere = function intersectsSphere(sphere) {
+			var planes = this.planes;
+			var center = sphere.center;
+			var negRadius = -sphere.radius;
+
+			for (var i = 0; i < 6; i++) {
+				var distance = planes[i].distanceToPoint(center);
+
+				if (distance < negRadius) {
+					return false;
+				}
+			}
+
+			return true;
+		};
+
+		_proto.intersectsBox = function intersectsBox(box) {
+			var planes = this.planes;
+
+			for (var i = 0; i < 6; i++) {
+				var plane = planes[i]; // corner at max distance
+
+				_vector$5.x = plane.normal.x > 0 ? box.max.x : box.min.x;
+				_vector$5.y = plane.normal.y > 0 ? box.max.y : box.min.y;
+				_vector$5.z = plane.normal.z > 0 ? box.max.z : box.min.z;
+
+				if (plane.distanceToPoint(_vector$5) < 0) {
+					return false;
+				}
+			}
+
+			return true;
+		};
+
+		_proto.containsPoint = function containsPoint(point) {
+			var planes = this.planes;
+
+			for (var i = 0; i < 6; i++) {
+				if (planes[i].distanceToPoint(point) < 0) {
+					return false;
+				}
+			}
+
+			return true;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		return Frustum;
+	}();
+
+	function WebGLAnimation() {
+		var context = null;
+		var isAnimating = false;
+		var animationLoop = null;
+		var requestId = null;
+
+		function onAnimationFrame(time, frame) {
+			animationLoop(time, frame);
+			requestId = context.requestAnimationFrame(onAnimationFrame);
+		}
+
+		return {
+			start: function start() {
+				if (isAnimating === true) return;
+				if (animationLoop === null) return;
+				requestId = context.requestAnimationFrame(onAnimationFrame);
+				isAnimating = true;
+			},
+			stop: function stop() {
+				context.cancelAnimationFrame(requestId);
+				isAnimating = false;
+			},
+			setAnimationLoop: function setAnimationLoop(callback) {
+				animationLoop = callback;
+			},
+			setContext: function setContext(value) {
+				context = value;
+			}
+		};
+	}
+
+	function WebGLAttributes(gl, capabilities) {
+		var isWebGL2 = capabilities.isWebGL2;
+		var buffers = new WeakMap();
+
+		function createBuffer(attribute, bufferType) {
+			var array = attribute.array;
+			var usage = attribute.usage;
+			var buffer = gl.createBuffer();
+			gl.bindBuffer(bufferType, buffer);
+			gl.bufferData(bufferType, array, usage);
+			attribute.onUploadCallback();
+			var type = 5126;
+
+			if (array instanceof Float32Array) {
+				type = 5126;
+			} else if (array instanceof Float64Array) {
+				console.warn('THREE.WebGLAttributes: Unsupported data buffer format: Float64Array.');
+			} else if (array instanceof Uint16Array) {
+				if (attribute.isFloat16BufferAttribute) {
+					if (isWebGL2) {
+						type = 5131;
+					} else {
+						console.warn('THREE.WebGLAttributes: Usage of Float16BufferAttribute requires WebGL2.');
+					}
+				} else {
+					type = 5123;
+				}
+			} else if (array instanceof Int16Array) {
+				type = 5122;
+			} else if (array instanceof Uint32Array) {
+				type = 5125;
+			} else if (array instanceof Int32Array) {
+				type = 5124;
+			} else if (array instanceof Int8Array) {
+				type = 5120;
+			} else if (array instanceof Uint8Array) {
+				type = 5121;
+			}
+
+			return {
+				buffer: buffer,
+				type: type,
+				bytesPerElement: array.BYTES_PER_ELEMENT,
+				version: attribute.version
+			};
+		}
+
+		function updateBuffer(buffer, attribute, bufferType) {
+			var array = attribute.array;
+			var updateRange = attribute.updateRange;
+			gl.bindBuffer(bufferType, buffer);
+
+			if (updateRange.count === -1) {
+				// Not using update ranges
+				gl.bufferSubData(bufferType, 0, array);
+			} else {
+				if (isWebGL2) {
+					gl.bufferSubData(bufferType, updateRange.offset * array.BYTES_PER_ELEMENT, array, updateRange.offset, updateRange.count);
+				} else {
+					gl.bufferSubData(bufferType, updateRange.offset * array.BYTES_PER_ELEMENT, array.subarray(updateRange.offset, updateRange.offset + updateRange.count));
+				}
+
+				updateRange.count = -1; // reset range
+			}
+		} //
+
+
+		function get(attribute) {
+			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
+			return buffers.get(attribute);
+		}
+
+		function remove(attribute) {
+			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
+			var data = buffers.get(attribute);
+
+			if (data) {
+				gl.deleteBuffer(data.buffer);
+				buffers.delete(attribute);
+			}
+		}
+
+		function update(attribute, bufferType) {
+			if (attribute.isGLBufferAttribute) {
+				var cached = buffers.get(attribute);
+
+				if (!cached || cached.version < attribute.version) {
+					buffers.set(attribute, {
+						buffer: attribute.buffer,
+						type: attribute.type,
+						bytesPerElement: attribute.elementSize,
+						version: attribute.version
+					});
+				}
+
+				return;
+			}
+
+			if (attribute.isInterleavedBufferAttribute) attribute = attribute.data;
+			var data = buffers.get(attribute);
+
+			if (data === undefined) {
+				buffers.set(attribute, createBuffer(attribute, bufferType));
+			} else if (data.version < attribute.version) {
+				updateBuffer(data.buffer, attribute, bufferType);
+				data.version = attribute.version;
+			}
+		}
+
+		return {
+			get: get,
+			remove: remove,
+			update: update
+		};
+	}
+
+	var PlaneGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(PlaneGeometry, _BufferGeometry);
+
+		function PlaneGeometry(width, height, widthSegments, heightSegments) {
+			var _this;
+
+			if (width === void 0) {
+				width = 1;
+			}
+
+			if (height === void 0) {
+				height = 1;
+			}
+
+			if (widthSegments === void 0) {
+				widthSegments = 1;
+			}
+
+			if (heightSegments === void 0) {
+				heightSegments = 1;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'PlaneGeometry';
+			_this.parameters = {
+				width: width,
+				height: height,
+				widthSegments: widthSegments,
+				heightSegments: heightSegments
+			};
+			var width_half = width / 2;
+			var height_half = height / 2;
+			var gridX = Math.floor(widthSegments);
+			var gridY = Math.floor(heightSegments);
+			var gridX1 = gridX + 1;
+			var gridY1 = gridY + 1;
+			var segment_width = width / gridX;
+			var segment_height = height / gridY; //
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = [];
+
+			for (var iy = 0; iy < gridY1; iy++) {
+				var y = iy * segment_height - height_half;
+
+				for (var ix = 0; ix < gridX1; ix++) {
+					var x = ix * segment_width - width_half;
+					vertices.push(x, -y, 0);
+					normals.push(0, 0, 1);
+					uvs.push(ix / gridX);
+					uvs.push(1 - iy / gridY);
+				}
+			}
+
+			for (var _iy = 0; _iy < gridY; _iy++) {
+				for (var _ix = 0; _ix < gridX; _ix++) {
+					var a = _ix + gridX1 * _iy;
+					var b = _ix + gridX1 * (_iy + 1);
+					var c = _ix + 1 + gridX1 * (_iy + 1);
+					var d = _ix + 1 + gridX1 * _iy;
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			}
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+
+			return _this;
+		}
+
+		return PlaneGeometry;
+	}(BufferGeometry);
+
+	var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vUv ).g;\n#endif";
+
+	var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
+
+	var alphatest_fragment = "#ifdef ALPHATEST\n\tif ( diffuseColor.a < ALPHATEST ) discard;\n#endif";
+
+	var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vUv2 ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.specularRoughness );\n\t#endif\n#endif";
+
+	var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";
+
+	var begin_vertex = "vec3 transformed = vec3( position );";
+
+	var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";
+
+	var bsdfs = "vec2 integrateSpecularBRDF( const in float dotNV, const in float roughness ) {\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\treturn vec2( -1.04, 1.04 ) * a004 + r.zw;\n}\nfloat punctualLightIntensityToIrradianceFactor( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n#if defined ( PHYSICALLY_CORRECT_LIGHTS )\n\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\tif( cutoffDistance > 0.0 ) {\n\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t}\n\treturn distanceFalloff;\n#else\n\tif( cutoffDistance > 0.0 && decayExponent > 0.0 ) {\n\t\treturn pow( saturate( -lightDistance / cutoffDistance + 1.0 ), decayExponent );\n\t}\n\treturn 1.0;\n#endif\n}\nvec3 BRDF_Diffuse_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 specularColor, const in float dotLH ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotLH - 6.98316 ) * dotLH );\n\treturn ( 1.0 - specularColor ) * fresnel + specularColor;\n}\nvec3 F_Schlick_RoughnessDependent( const in vec3 F0, const in float dotNV, const in float roughness ) {\n\tfloat fresnel = exp2( ( -5.55473 * dotNV - 6.98316 ) * dotNV );\n\tvec3 Fr = max( vec3( 1.0 - roughness ), F0 ) - F0;\n\treturn Fr * fresnel + F0;\n}\nfloat G_GGX_Smith( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gl = dotNL + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\tfloat gv = dotNV + sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\treturn 1.0 / ( gl * gv );\n}\nfloat G_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\nvec3 BRDF_Specular_GGX( const in IncidentLight incidentLight, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( incidentLight.direction + viewDir );\n\tfloat dotNL = saturate( dot( normal, incidentLight.direction ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\tfloat D = D_GGX( alpha, dotNH );\n\treturn F * ( G * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\nvec3 BRDF_Specular_GGX_Environment( const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\treturn specularColor * brdf.x + brdf.y;\n}\nvoid BRDF_Specular_Multiscattering_Environment( const in GeometricContext geometry, const in vec3 specularColor, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n\tfloat dotNV = saturate( dot( geometry.normal, geometry.viewDir ) );\n\tvec3 F = F_Schlick_RoughnessDependent( specularColor, dotNV, roughness );\n\tvec2 brdf = integrateSpecularBRDF( dotNV, roughness );\n\tvec3 FssEss = F * brdf.x + brdf.y;\n\tfloat Ess = brdf.x + brdf.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = specularColor + ( 1.0 - specularColor ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\nfloat G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_Specular_BlinnPhong( const in IncidentLight incidentLight, const in GeometricContext geometry, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( incidentLight.direction + geometry.viewDir );\n\tfloat dotNH = saturate( dot( geometry.normal, halfDir ) );\n\tfloat dotLH = saturate( dot( incidentLight.direction, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, dotLH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n}\nfloat GGXRoughnessToBlinnExponent( const in float ggxRoughness ) {\n\treturn ( 2.0 / pow2( ggxRoughness + 0.0001 ) - 2.0 );\n}\nfloat BlinnExponentToGGXRoughness( const in float blinnExponent ) {\n\treturn sqrt( 2.0 / ( blinnExponent + 2.0 ) );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie(float roughness, float NoH) {\n\tfloat invAlpha = 1.0 / roughness;\n\tfloat cos2h = NoH * NoH;\n\tfloat sin2h = max(1.0 - cos2h, 0.0078125);\treturn (2.0 + invAlpha) * pow(sin2h, invAlpha * 0.5) / (2.0 * PI);\n}\nfloat V_Neubelt(float NoV, float NoL) {\n\treturn saturate(1.0 / (4.0 * (NoL + NoV - NoL * NoV)));\n}\nvec3 BRDF_Specular_Sheen( const in float roughness, const in vec3 L, const in GeometricContext geometry, vec3 specularColor ) {\n\tvec3 N = geometry.normal;\n\tvec3 V = geometry.viewDir;\n\tvec3 H = normalize( V + L );\n\tfloat dotNH = saturate( dot( N, H ) );\n\treturn specularColor * D_Charlie( roughness, dotNH ) * V_Neubelt( dot(N, V), dot(N, L) );\n}\n#endif";
+
+	var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vUv );\n\t\tvec2 dSTdy = dFdy( vUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = vec3( dFdx( surf_pos.x ), dFdx( surf_pos.y ), dFdx( surf_pos.z ) );\n\t\tvec3 vSigmaY = vec3( dFdy( surf_pos.x ), dFdy( surf_pos.y ), dFdy( surf_pos.z ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";
+
+	var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\tplane = clippingPlanes[ i ];\n\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t}\n\t#pragma unroll_loop_end\n\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\tbool clipped = true;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\tif ( clipped ) discard;\n\t#endif\n#endif";
+
+	var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";
+
+	var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";
+
+	var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";
+
+	var color_fragment = "#ifdef USE_COLOR\n\tdiffuseColor.rgb *= vColor;\n#endif";
+
+	var color_pars_fragment = "#ifdef USE_COLOR\n\tvarying vec3 vColor;\n#endif";
+
+	var color_pars_vertex = "#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvarying vec3 vColor;\n#endif";
+
+	var color_vertex = "#if defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor.xyz *= color.xyz;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif";
+
+	var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement(a) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat average( const in vec3 color ) { return dot( color, vec3( 0.3333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract(sin(sn) * c);\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat max3( vec3 v ) { return max( max( v.x, v.y ), v.z ); }\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\nstruct GeometricContext {\n\tvec3 position;\n\tvec3 normal;\n\tvec3 viewDir;\n#ifdef CLEARCOAT\n\tvec3 clearcoatNormal;\n#endif\n};\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nvec3 projectOnPlane(in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\tfloat distance = dot( planeNormal, point - pointOnPlane );\n\treturn - distance * planeNormal + point;\n}\nfloat sideOfPlane( in vec3 point, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn sign( dot( point - pointOnPlane, planeNormal ) );\n}\nvec3 linePlaneIntersect( in vec3 pointOnLine, in vec3 lineDirection, in vec3 pointOnPlane, in vec3 planeNormal ) {\n\treturn lineDirection * ( dot( planeNormal, pointOnPlane - pointOnLine ) / dot( planeNormal, lineDirection ) ) + pointOnLine;\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nfloat linearToRelativeLuminance( const in vec3 color ) {\n\tvec3 weights = vec3( 0.2126, 0.7152, 0.0722 );\n\treturn dot( weights, color.rgb );\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}";
+
+	var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_maxMipLevel 8.0\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_maxTileSize 256.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\tfloat texelSize = 1.0 / ( 3.0 * cubeUV_maxTileSize );\n\t\tvec2 uv = getUV( direction, face ) * ( faceSize - 1.0 );\n\t\tvec2 f = fract( uv );\n\t\tuv += 0.5 - f;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tif ( mipInt < cubeUV_maxMipLevel ) {\n\t\t\tuv.y += 2.0 * cubeUV_maxTileSize;\n\t\t}\n\t\tuv.y += filterInt * 2.0 * cubeUV_minTileSize;\n\t\tuv.x += 3.0 * max( 0.0, cubeUV_maxTileSize - 2.0 * faceSize );\n\t\tuv *= texelSize;\n\t\tvec3 tl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x += texelSize;\n\t\tvec3 tr = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.y += texelSize;\n\t\tvec3 br = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tuv.x -= texelSize;\n\t\tvec3 bl = envMapTexelToLinear( texture2D( envMap, uv ) ).rgb;\n\t\tvec3 tm = mix( tl, tr, f.x );\n\t\tvec3 bm = mix( bl, br, f.x );\n\t\treturn mix( tm, bm, f.y );\n\t}\n\t#define r0 1.0\n\t#define v0 0.339\n\t#define m0 - 2.0\n\t#define r1 0.8\n\t#define v1 0.276\n\t#define m1 - 1.0\n\t#define r4 0.4\n\t#define v4 0.046\n\t#define m4 2.0\n\t#define r5 0.305\n\t#define v5 0.016\n\t#define m5 3.0\n\t#define r6 0.21\n\t#define v6 0.0038\n\t#define m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= r1 ) {\n\t\t\tmip = ( r0 - roughness ) * ( m1 - m0 ) / ( r0 - r1 ) + m0;\n\t\t} else if ( roughness >= r4 ) {\n\t\t\tmip = ( r1 - roughness ) * ( m4 - m1 ) / ( r1 - r4 ) + m1;\n\t\t} else if ( roughness >= r5 ) {\n\t\t\tmip = ( r4 - roughness ) * ( m5 - m4 ) / ( r4 - r5 ) + m4;\n\t\t} else if ( roughness >= r6 ) {\n\t\t\tmip = ( r5 - roughness ) * ( m6 - m5 ) / ( r5 - r6 ) + m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), m0, cubeUV_maxMipLevel );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";
+
+	var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_INSTANCING\n\tmat3 m = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( m[ 0 ], m[ 0 ] ), dot( m[ 1 ], m[ 1 ] ), dot( m[ 2 ], m[ 2 ] ) );\n\ttransformedNormal = m * transformedNormal;\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = ( modelViewMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";
+
+	var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";
+
+	var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vUv ).x * displacementScale + displacementBias );\n#endif";
+
+	var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vUv );\n\temissiveColor.rgb = emissiveMapTexelToLinear( emissiveColor ).rgb;\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";
+
+	var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";
+
+	var encodings_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";
+
+	var encodings_pars_fragment = "\nvec4 LinearToLinear( in vec4 value ) {\n\treturn value;\n}\nvec4 GammaToLinear( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( gammaFactor ) ), value.a );\n}\nvec4 LinearToGamma( in vec4 value, in float gammaFactor ) {\n\treturn vec4( pow( value.rgb, vec3( 1.0 / gammaFactor ) ), value.a );\n}\nvec4 sRGBToLinear( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), value.rgb * 0.0773993808, vec3( lessThanEqual( value.rgb, vec3( 0.04045 ) ) ) ), value.a );\n}\nvec4 LinearTosRGB( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}\nvec4 RGBEToLinear( in vec4 value ) {\n\treturn vec4( value.rgb * exp2( value.a * 255.0 - 128.0 ), 1.0 );\n}\nvec4 LinearToRGBE( in vec4 value ) {\n\tfloat maxComponent = max( max( value.r, value.g ), value.b );\n\tfloat fExp = clamp( ceil( log2( maxComponent ) ), -128.0, 127.0 );\n\treturn vec4( value.rgb / exp2( fExp ), ( fExp + 128.0 ) / 255.0 );\n}\nvec4 RGBMToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * value.a * maxRange, 1.0 );\n}\nvec4 LinearToRGBM( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat M = clamp( maxRGB / maxRange, 0.0, 1.0 );\n\tM = ceil( M * 255.0 ) / 255.0;\n\treturn vec4( value.rgb / ( M * maxRange ), M );\n}\nvec4 RGBDToLinear( in vec4 value, in float maxRange ) {\n\treturn vec4( value.rgb * ( ( maxRange / 255.0 ) / value.a ), 1.0 );\n}\nvec4 LinearToRGBD( in vec4 value, in float maxRange ) {\n\tfloat maxRGB = max( value.r, max( value.g, value.b ) );\n\tfloat D = max( maxRange / maxRGB, 1.0 );\n\tD = clamp( floor( D ) / 255.0, 0.0, 1.0 );\n\treturn vec4( value.rgb * ( D * ( 255.0 / maxRange ) ), D );\n}\nconst mat3 cLogLuvM = mat3( 0.2209, 0.3390, 0.4184, 0.1138, 0.6780, 0.7319, 0.0102, 0.1130, 0.2969 );\nvec4 LinearToLogLuv( in vec4 value ) {\n\tvec3 Xp_Y_XYZp = cLogLuvM * value.rgb;\n\tXp_Y_XYZp = max( Xp_Y_XYZp, vec3( 1e-6, 1e-6, 1e-6 ) );\n\tvec4 vResult;\n\tvResult.xy = Xp_Y_XYZp.xy / Xp_Y_XYZp.z;\n\tfloat Le = 2.0 * log2(Xp_Y_XYZp.y) + 127.0;\n\tvResult.w = fract( Le );\n\tvResult.z = ( Le - ( floor( vResult.w * 255.0 ) ) / 255.0 ) / 255.0;\n\treturn vResult;\n}\nconst mat3 cLogLuvInverseM = mat3( 6.0014, -2.7008, -1.7996, -1.3320, 3.1029, -5.7721, 0.3008, -1.0882, 5.6268 );\nvec4 LogLuvToLinear( in vec4 value ) {\n\tfloat Le = value.z * 255.0 + value.w;\n\tvec3 Xp_Y_XYZp;\n\tXp_Y_XYZp.y = exp2( ( Le - 127.0 ) / 2.0 );\n\tXp_Y_XYZp.z = Xp_Y_XYZp.y / value.y;\n\tXp_Y_XYZp.x = value.x * Xp_Y_XYZp.z;\n\tvec3 vRGB = cLogLuvInverseM * Xp_Y_XYZp.rgb;\n\treturn vec4( max( vRGB, 0.0 ), 1.0 );\n}";
+
+	var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 envColor = textureCubeUV( envMap, reflectVec, 0.0 );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifndef ENVMAP_TYPE_CUBE_UV\n\t\tenvColor = envMapTexelToLinear( envColor );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";
+
+	var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform int maxMipLevel;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";
+
+	var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";
+
+	var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) ||defined( PHONG )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";
+
+	var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";
+
+	var fog_vertex = "#ifdef USE_FOG\n\tfogDepth = - mvPosition.z;\n#endif";
+
+	var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float fogDepth;\n#endif";
+
+	var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * fogDepth * fogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, fogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";
+
+	var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float fogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";
+
+	var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn texture2D( gradientMap, coord ).rgb;\n\t#else\n\t\treturn ( coord.x < 0.7 ) ? vec3( 0.7 ) : vec3( 1.0 );\n\t#endif\n}";
+
+	var lightmap_fragment = "#ifdef USE_LIGHTMAP\n\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\treflectedLight.indirectDiffuse += PI * lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n#endif";
+
+	var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";
+
+	var lights_lambert_vertex = "vec3 diffuse = vec3( 1.0 );\nGeometricContext geometry;\ngeometry.position = mvPosition.xyz;\ngeometry.normal = normalize( transformedNormal );\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( -mvPosition.xyz );\nGeometricContext backGeometry;\nbackGeometry.position = geometry.position;\nbackGeometry.normal = -geometry.normal;\nbackGeometry.viewDir = geometry.viewDir;\nvLightFront = vec3( 0.0 );\nvIndirectFront = vec3( 0.0 );\n#ifdef DOUBLE_SIDED\n\tvLightBack = vec3( 0.0 );\n\tvIndirectBack = vec3( 0.0 );\n#endif\nIncidentLight directLight;\nfloat dotNL;\nvec3 directLightColor_Diffuse;\nvIndirectFront += getAmbientLightIrradiance( ambientLightColor );\nvIndirectFront += getLightProbeIrradiance( lightProbe, geometry );\n#ifdef DOUBLE_SIDED\n\tvIndirectBack += getAmbientLightIrradiance( ambientLightColor );\n\tvIndirectBack += getLightProbeIrradiance( lightProbe, backGeometry );\n#endif\n#if NUM_POINT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tgetPointDirectLightIrradiance( pointLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tgetSpotDirectLightIrradiance( spotLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_DIR_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tgetDirectionalDirectLightIrradiance( directionalLights[ i ], geometry, directLight );\n\t\tdotNL = dot( geometry.normal, directLight.direction );\n\t\tdirectLightColor_Diffuse = PI * directLight.color;\n\t\tvLightFront += saturate( dotNL ) * directLightColor_Diffuse;\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvLightBack += saturate( -dotNL ) * directLightColor_Diffuse;\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\tvIndirectFront += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\tvIndirectBack += getHemisphereLightIrradiance( hemisphereLights[ i ], backGeometry );\n\t\t#endif\n\t}\n\t#pragma unroll_loop_end\n#endif";
+
+	var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\nuniform vec3 lightProbe[ 9 ];\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in GeometricContext geometry ) {\n\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treturn irradiance;\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalDirectLightIrradiance( const in DirectionalLight directionalLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tdirectLight.color = directionalLight.color;\n\t\tdirectLight.direction = directionalLight.direction;\n\t\tdirectLight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointDirectLightIrradiance( const in PointLight pointLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = pointLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tdirectLight.color = pointLight.color;\n\t\tdirectLight.color *= punctualLightIntensityToIrradianceFactor( lightDistance, pointLight.distance, pointLight.decay );\n\t\tdirectLight.visible = ( directLight.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotDirectLightIrradiance( const in SpotLight spotLight, const in GeometricContext geometry, out IncidentLight directLight ) {\n\t\tvec3 lVector = spotLight.position - geometry.position;\n\t\tdirectLight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tfloat angleCos = dot( directLight.direction, spotLight.direction );\n\t\tif ( angleCos > spotLight.coneCos ) {\n\t\t\tfloat spotEffect = smoothstep( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\t\tdirectLight.color = spotLight.color;\n\t\t\tdirectLight.color *= spotEffect * punctualLightIntensityToIrradianceFactor( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tdirectLight.visible = true;\n\t\t} else {\n\t\t\tdirectLight.color = vec3( 0.0 );\n\t\t\tdirectLight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in GeometricContext geometry ) {\n\t\tfloat dotNL = dot( geometry.normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tirradiance *= PI;\n\t\t#endif\n\t\treturn irradiance;\n\t}\n#endif";
+
+	var envmap_physical_pars_fragment = "#if defined( USE_ENVMAP )\n\t#ifdef ENVMAP_MODE_REFRACTION\n\t\tuniform float refractionRatio;\n\t#endif\n\tvec3 getLightProbeIndirectIrradiance( const in GeometricContext geometry, const in int maxMIPLevel ) {\n\t\tvec3 worldNormal = inverseTransformDirection( geometry.normal, viewMatrix );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryVec = vec3( flipEnvMap * worldNormal.x, worldNormal.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryVec, float( maxMIPLevel ) );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, worldNormal, 1.0 );\n\t\t#else\n\t\t\tvec4 envMapColor = vec4( 0.0 );\n\t\t#endif\n\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t}\n\tfloat getSpecularMIPLevel( const in float roughness, const in int maxMIPLevel ) {\n\t\tfloat maxMIPLevelScalar = float( maxMIPLevel );\n\t\tfloat sigma = PI * roughness * roughness / ( 1.0 + roughness );\n\t\tfloat desiredMIPLevel = maxMIPLevelScalar + log2( sigma );\n\t\treturn clamp( desiredMIPLevel, 0.0, maxMIPLevelScalar );\n\t}\n\tvec3 getLightProbeIndirectRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in int maxMIPLevel ) {\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( -viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( -viewDir, normal, refractionRatio );\n\t\t#endif\n\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\tfloat specularMIPLevel = getSpecularMIPLevel( roughness, maxMIPLevel );\n\t\t#ifdef ENVMAP_TYPE_CUBE\n\t\t\tvec3 queryReflectVec = vec3( flipEnvMap * reflectVec.x, reflectVec.yz );\n\t\t\t#ifdef TEXTURE_LOD_EXT\n\t\t\t\tvec4 envMapColor = textureCubeLodEXT( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#else\n\t\t\t\tvec4 envMapColor = textureCube( envMap, queryReflectVec, specularMIPLevel );\n\t\t\t#endif\n\t\t\tenvMapColor.rgb = envMapTexelToLinear( envMapColor ).rgb;\n\t\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, reflectVec, roughness );\n\t\t#endif\n\t\treturn envMapColor.rgb * envMapIntensity;\n\t}\n#endif";
+
+	var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";
+
+	var lights_toon_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometry.normal, directLight.direction ) * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in GeometricContext geometry, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon\n#define Material_LightProbeLOD( material )\t(0)";
+
+	var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";
+
+	var lights_phong_pars_fragment = "varying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\treflectedLight.directDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_Specular_BlinnPhong( directLight, geometry, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in GeometricContext geometry, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong\n#define Material_LightProbeLOD( material )\t(0)";
+
+	var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.specularRoughness = max( roughnessFactor, 0.0525 );material.specularRoughness += geometryRoughness;\nmaterial.specularRoughness = min( material.specularRoughness, 1.0 );\n#ifdef REFLECTIVITY\n\tmaterial.specularColor = mix( vec3( MAXIMUM_SPECULAR_COEFFICIENT * pow2( reflectivity ) ), diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( DEFAULT_SPECULAR_COEFFICIENT ), diffuseColor.rgb, metalnessFactor );\n#endif\n#ifdef CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheen;\n#endif";
+
+	var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat specularRoughness;\n\tvec3 specularColor;\n#ifdef CLEARCOAT\n\tfloat clearcoat;\n\tfloat clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tvec3 sheenColor;\n#endif\n};\n#define MAXIMUM_SPECULAR_COEFFICIENT 0.16\n#define DEFAULT_SPECULAR_COEFFICIENT 0.04\nfloat clearcoatDHRApprox( const in float roughness, const in float dotNL ) {\n\treturn DEFAULT_SPECULAR_COEFFICIENT + ( 1.0 - DEFAULT_SPECULAR_COEFFICIENT ) * ( pow( 1.0 - dotNL, 5.0 ) * pow( 1.0 - roughness, 2.0 ) );\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometry.normal;\n\t\tvec3 viewDir = geometry.viewDir;\n\t\tvec3 position = geometry.position;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.specularRoughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(		0, 1,		0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometry.normal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\tirradiance *= PI;\n\t#endif\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNL = saturate( dot( geometry.clearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = ccDotNL * directLight.color;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tccIrradiance *= PI;\n\t\t#endif\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t\treflectedLight.directSpecular += ccIrradiance * material.clearcoat * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_Sheen(\n\t\t\tmaterial.specularRoughness,\n\t\t\tdirectLight.direction,\n\t\t\tgeometry,\n\t\t\tmaterial.sheenColor\n\t\t);\n\t#else\n\t\treflectedLight.directSpecular += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Specular_GGX( directLight, geometry.viewDir, geometry.normal, material.specularColor, material.specularRoughness);\n\t#endif\n\treflectedLight.directDiffuse += ( 1.0 - clearcoatDHR ) * irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Diffuse_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in GeometricContext geometry, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef CLEARCOAT\n\t\tfloat ccDotNV = saturate( dot( geometry.clearcoatNormal, geometry.viewDir ) );\n\t\treflectedLight.indirectSpecular += clearcoatRadiance * material.clearcoat * BRDF_Specular_GGX_Environment( geometry.viewDir, geometry.clearcoatNormal, vec3( DEFAULT_SPECULAR_COEFFICIENT ), material.clearcoatRoughness );\n\t\tfloat ccDotNL = ccDotNV;\n\t\tfloat clearcoatDHR = material.clearcoat * clearcoatDHRApprox( material.clearcoatRoughness, ccDotNL );\n\t#else\n\t\tfloat clearcoatDHR = 0.0;\n\t#endif\n\tfloat clearcoatInv = 1.0 - clearcoatDHR;\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\tBRDF_Specular_Multiscattering_Environment( geometry, material.specularColor, material.specularRoughness, singleScattering, multiScattering );\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - ( singleScattering + multiScattering ) );\n\treflectedLight.indirectSpecular += clearcoatInv * radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";
+
+	var lights_fragment_begin = "\nGeometricContext geometry;\ngeometry.position = - vViewPosition;\ngeometry.normal = normal;\ngeometry.viewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\n#ifdef CLEARCOAT\n\tgeometry.clearcoatNormal = clearcoatNormal;\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointDirectLightIrradiance( pointLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotDirectLightIrradiance( spotLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalDirectLightIrradiance( directionalLight, geometry, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= all( bvec2( directLight.visible, receiveShadow ) ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometry, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\tirradiance += getLightProbeIrradiance( lightProbe, geometry );\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometry );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";
+
+	var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\tvec3 lightMapIrradiance = lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t\t#ifndef PHYSICALLY_CORRECT_LIGHTS\n\t\t\tlightMapIrradiance *= PI;\n\t\t#endif\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getLightProbeIndirectIrradiance( geometry, maxMipLevel );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\tradiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.normal, material.specularRoughness, maxMipLevel );\n\t#ifdef CLEARCOAT\n\t\tclearcoatRadiance += getLightProbeIndirectRadiance( geometry.viewDir, geometry.clearcoatNormal, material.clearcoatRoughness, maxMipLevel );\n\t#endif\n#endif";
+
+	var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometry, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometry, material, reflectedLight );\n#endif";
+
+	var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tgl_FragDepthEXT = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";
+
+	var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF ) && defined( USE_LOGDEPTHBUF_EXT )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";
+
+	var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvarying float vFragDepth;\n\t\tvarying float vIsPerspective;\n\t#else\n\t\tuniform float logDepthBufFC;\n\t#endif\n#endif";
+
+	var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\t#ifdef USE_LOGDEPTHBUF_EXT\n\t\tvFragDepth = 1.0 + gl_Position.w;\n\t\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n\t#else\n\t\tif ( isPerspectiveMatrix( projectionMatrix ) ) {\n\t\t\tgl_Position.z = log2( max( EPSILON, gl_Position.w + 1.0 ) ) * logDepthBufFC - 1.0;\n\t\t\tgl_Position.z *= gl_Position.w;\n\t\t}\n\t#endif\n#endif";
+
+	var map_fragment = "#ifdef USE_MAP\n\tvec4 texelColor = texture2D( map, vUv );\n\ttexelColor = mapTexelToLinear( texelColor );\n\tdiffuseColor *= texelColor;\n#endif";
+
+	var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";
+
+	var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n#endif\n#ifdef USE_MAP\n\tvec4 mapTexel = texture2D( map, uv );\n\tdiffuseColor *= mapTexelToLinear( mapTexel );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";
+
+	var map_particle_pars_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\tuniform mat3 uvTransform;\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
+
+	var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";
+
+	var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";
+
+	var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\tobjectNormal += morphNormal0 * morphTargetInfluences[ 0 ];\n\tobjectNormal += morphNormal1 * morphTargetInfluences[ 1 ];\n\tobjectNormal += morphNormal2 * morphTargetInfluences[ 2 ];\n\tobjectNormal += morphNormal3 * morphTargetInfluences[ 3 ];\n#endif";
+
+	var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\tuniform float morphTargetBaseInfluence;\n\t#ifndef USE_MORPHNORMALS\n\t\tuniform float morphTargetInfluences[ 8 ];\n\t#else\n\t\tuniform float morphTargetInfluences[ 4 ];\n\t#endif\n#endif";
+
+	var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\ttransformed += morphTarget0 * morphTargetInfluences[ 0 ];\n\ttransformed += morphTarget1 * morphTargetInfluences[ 1 ];\n\ttransformed += morphTarget2 * morphTargetInfluences[ 2 ];\n\ttransformed += morphTarget3 * morphTargetInfluences[ 3 ];\n\t#ifndef USE_MORPHNORMALS\n\t\ttransformed += morphTarget4 * morphTargetInfluences[ 4 ];\n\t\ttransformed += morphTarget5 * morphTargetInfluences[ 5 ];\n\t\ttransformed += morphTarget6 * morphTargetInfluences[ 6 ];\n\t\ttransformed += morphTarget7 * morphTargetInfluences[ 7 ];\n\t#endif\n#endif";
+
+	var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = vec3( dFdx( vViewPosition.x ), dFdx( vViewPosition.y ), dFdx( vViewPosition.z ) );\n\tvec3 fdy = vec3( dFdy( vViewPosition.x ), dFdy( vViewPosition.y ), dFdy( vViewPosition.z ) );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\t#ifdef USE_TANGENT\n\t\tvec3 tangent = normalize( vTangent );\n\t\tvec3 bitangent = normalize( vBitangent );\n\t\t#ifdef DOUBLE_SIDED\n\t\t\ttangent = tangent * faceDirection;\n\t\t\tbitangent = bitangent * faceDirection;\n\t\t#endif\n\t\t#if defined( TANGENTSPACE_NORMALMAP ) || defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tmat3 vTBN = mat3( tangent, bitangent, normal );\n\t\t#endif\n\t#endif\n#endif\nvec3 geometryNormal = normal;";
+
+	var normal_fragment_maps = "#ifdef OBJECTSPACE_NORMALMAP\n\tnormal = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( TANGENTSPACE_NORMALMAP )\n\tvec3 mapN = texture2D( normalMap, vUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\t#ifdef USE_TANGENT\n\t\tnormal = normalize( vTBN * mapN );\n\t#else\n\t\tnormal = perturbNormal2Arb( -vViewPosition, normal, mapN, faceDirection );\n\t#endif\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( -vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";
+
+	var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef OBJECTSPACE_NORMALMAP\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( TANGENTSPACE_NORMALMAP ) || defined ( USE_CLEARCOAT_NORMALMAP ) )\n\tvec3 perturbNormal2Arb( vec3 eye_pos, vec3 surf_norm, vec3 mapN, float faceDirection ) {\n\t\tvec3 q0 = vec3( dFdx( eye_pos.x ), dFdx( eye_pos.y ), dFdx( eye_pos.z ) );\n\t\tvec3 q1 = vec3( dFdy( eye_pos.x ), dFdy( eye_pos.y ), dFdy( eye_pos.z ) );\n\t\tvec2 st0 = dFdx( vUv.st );\n\t\tvec2 st1 = dFdy( vUv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : faceDirection * inversesqrt( det );\n\t\treturn normalize( T * ( mapN.x * scale ) + B * ( mapN.y * scale ) + N * mapN.z );\n\t}\n#endif";
+
+	var clearcoat_normal_fragment_begin = "#ifdef CLEARCOAT\n\tvec3 clearcoatNormal = geometryNormal;\n#endif";
+
+	var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\t#ifdef USE_TANGENT\n\t\tclearcoatNormal = normalize( vTBN * clearcoatMapN );\n\t#else\n\t\tclearcoatNormal = perturbNormal2Arb( - vViewPosition, clearcoatNormal, clearcoatMapN, faceDirection );\n\t#endif\n#endif";
+
+	var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif";
+
+	var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;\nconst vec3 PackFactors = vec3( 256. * 256. * 256., 256. * 256., 256. );\nconst vec4 UnpackFactors = UnpackDownscale / vec4( PackFactors, 1. );\nconst float ShiftRight8 = 1. / 256.;\nvec4 packDepthToRGBA( const in float v ) {\n\tvec4 r = vec4( fract( v * PackFactors ), v );\n\tr.yzw -= r.xyz * ShiftRight8;\treturn r * PackUpscale;\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors );\n}\nvec4 pack2HalfToRGBA( vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ));\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w);\n}\nvec2 unpackRGBATo2Half( vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float linearClipZ, const in float near, const in float far ) {\n\treturn linearClipZ * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn (( near + viewZ ) * far ) / (( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float invClipZ, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * invClipZ - far );\n}";
+
+	var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";
+
+	var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";
+
+	var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";
+
+	var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";
+
+	var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";
+
+	var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";
+
+	var shadowmap_pars_fragment = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbvec4 inFrustumVec = bvec4 ( shadowCoord.x >= 0.0, shadowCoord.x <= 1.0, shadowCoord.y >= 0.0, shadowCoord.y <= 1.0 );\n\t\tbool inFrustum = all( inFrustumVec );\n\t\tbvec2 frustumTestVec = bvec2( inFrustum, shadowCoord.z <= 1.0 );\n\t\tbool frustumTest = all( frustumTestVec );\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ), \n\t\t\t\t\t\t	texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t	f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ), \n\t\t\t\t\t\t	texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t	f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn shadow;\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\tfloat dp = ( length( lightToPosition ) - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\tdp += shadowBias;\n\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\treturn (\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#else\n\t\t\treturn texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t#endif\n\t}\n#endif";
+
+	var shadowmap_pars_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 spotShadowMatrix[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vSpotShadowCoord[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";
+
+	var shadowmap_vertex = "#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0 || NUM_SPOT_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0\n\t\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\tvec4 shadowWorldPosition;\n\t#endif\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvSpotShadowCoord[ i ] = spotShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n#endif";
+
+	var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";
+
+	var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
+
+	var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\t#ifdef BONE_TEXTURE\n\t\tuniform highp sampler2D boneTexture;\n\t\tuniform int boneTextureSize;\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tfloat j = i * 4.0;\n\t\t\tfloat x = mod( j, float( boneTextureSize ) );\n\t\t\tfloat y = floor( j / float( boneTextureSize ) );\n\t\t\tfloat dx = 1.0 / float( boneTextureSize );\n\t\t\tfloat dy = 1.0 / float( boneTextureSize );\n\t\t\ty = dy * ( y + 0.5 );\n\t\t\tvec4 v1 = texture2D( boneTexture, vec2( dx * ( x + 0.5 ), y ) );\n\t\t\tvec4 v2 = texture2D( boneTexture, vec2( dx * ( x + 1.5 ), y ) );\n\t\t\tvec4 v3 = texture2D( boneTexture, vec2( dx * ( x + 2.5 ), y ) );\n\t\t\tvec4 v4 = texture2D( boneTexture, vec2( dx * ( x + 3.5 ), y ) );\n\t\t\tmat4 bone = mat4( v1, v2, v3, v4 );\n\t\t\treturn bone;\n\t\t}\n\t#else\n\t\tuniform mat4 boneMatrices[ MAX_BONES ];\n\t\tmat4 getBoneMatrix( const in float i ) {\n\t\t\tmat4 bone = boneMatrices[ int(i) ];\n\t\t\treturn bone;\n\t\t}\n\t#endif\n#endif";
+
+	var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";
+
+	var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";
+
+	var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";
+
+	var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";
+
+	var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";
+
+	var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate(a) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn toneMappingExposure * color;\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 OptimizedCineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(	1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,	1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,	1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";
+
+	var transmissionmap_fragment = "#ifdef USE_TRANSMISSIONMAP\n\ttotalTransmission *= texture2D( transmissionMap, vUv ).r;\n#endif";
+
+	var transmissionmap_pars_fragment = "#ifdef USE_TRANSMISSIONMAP\n\tuniform sampler2D transmissionMap;\n#endif";
+
+	var uv_pars_fragment = "#if ( defined( USE_UV ) && ! defined( UVS_VERTEX_ONLY ) )\n\tvarying vec2 vUv;\n#endif";
+
+	var uv_pars_vertex = "#ifdef USE_UV\n\t#ifdef UVS_VERTEX_ONLY\n\t\tvec2 vUv;\n\t#else\n\t\tvarying vec2 vUv;\n\t#endif\n\tuniform mat3 uvTransform;\n#endif";
+
+	var uv_vertex = "#ifdef USE_UV\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n#endif";
+
+	var uv2_pars_fragment = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvarying vec2 vUv2;\n#endif";
+
+	var uv2_pars_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tattribute vec2 uv2;\n\tvarying vec2 vUv2;\n\tuniform mat3 uv2Transform;\n#endif";
+
+	var uv2_vertex = "#if defined( USE_LIGHTMAP ) || defined( USE_AOMAP )\n\tvUv2 = ( uv2Transform * vec3( uv2, 1 ) ).xy;\n#endif";
+
+	var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP )\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";
+
+	var background_frag = "uniform sampler2D t2D;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
+
+	var background_vert = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
+
+	var cube_frag = "#include <envmap_common_pars_fragment>\nuniform float opacity;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\tvec3 vReflect = vWorldDirection;\n\t#include <envmap_fragment>\n\tgl_FragColor = envColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
+
+	var cube_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";
+
+	var depth_frag = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#endif\n}";
+
+	var depth_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";
+
+	var distanceRGBA_frag = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";
+
+	var distanceRGBA_vert = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";
+
+	var equirect_frag = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tvec4 texColor = texture2D( tEquirect, sampleUV );\n\tgl_FragColor = mapTexelToLinear( texColor );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n}";
+
+	var equirect_vert = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";
+
+	var linedashed_frag = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
+
+	var linedashed_vert = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
+
+	var meshbasic_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\n\t\tvec4 lightMapTexel= texture2D( lightMap, vUv2 );\n\t\treflectedLight.indirectDiffuse += lightMapTexelToLinear( lightMapTexel ).rgb * lightMapIntensity;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+	var meshbasic_vert = "#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <skinbase_vertex>\n\t#ifdef USE_ENVMAP\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";
+
+	var meshlambert_frag = "uniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <fog_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <emissivemap_fragment>\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;\n\t#else\n\t\treflectedLight.indirectDiffuse += vIndirectFront;\n\t#endif\n\t#include <lightmap_fragment>\n\treflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );\n\t#ifdef DOUBLE_SIDED\n\t\treflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;\n\t#else\n\t\treflectedLight.directDiffuse = vLightFront;\n\t#endif\n\treflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+	var meshlambert_vert = "#define LAMBERT\nvarying vec3 vLightFront;\nvarying vec3 vIndirectFront;\n#ifdef DOUBLE_SIDED\n\tvarying vec3 vLightBack;\n\tvarying vec3 vIndirectBack;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <envmap_pars_vertex>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <lights_lambert_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+	var meshmatcap_frag = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t\tmatcapColor = matcapTexelToLinear( matcapColor );\n\t#else\n\t\tvec4 matcapColor = vec4( 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+	var meshmatcap_vert = "#define MATCAP\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#ifndef FLAT_SHADED\n\t\tvNormal = normalize( transformedNormal );\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";
+
+	var meshtoon_frag = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+	var meshtoon_vert = "#define TOON\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+	var meshphong_frag = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <cube_uv_reflection_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+	var meshphong_vert = "#define PHONG\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+	var meshphysical_frag = "#define STANDARD\n#ifdef PHYSICAL\n\t#define REFLECTIVITY\n\t#define CLEARCOAT\n\t#define TRANSMISSION\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef TRANSMISSION\n\tuniform float transmission;\n#endif\n#ifdef REFLECTIVITY\n\tuniform float reflectivity;\n#endif\n#ifdef CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheen;\n#endif\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <uv2_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <transmissionmap_pars_fragment>\n#include <bsdfs>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <lights_physical_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#ifdef TRANSMISSION\n\t\tfloat totalTransmission = transmission;\n\t#endif\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <transmissionmap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#ifdef TRANSMISSION\n\t\tdiffuseColor.a *= mix( saturate( 1. - totalTransmission + linearToRelativeLuminance( reflectedLight.directSpecular + reflectedLight.indirectSpecular ) ), 1.0, metalness );\n\t#endif\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+	var meshphysical_vert = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <uv2_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <uv2_vertex>\n\t#include <color_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+	var normal_frag = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), opacity );\n}";
+
+	var normal_vert = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvarying vec3 vViewPosition;\n#endif\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif\n#include <common>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( TANGENTSPACE_NORMALMAP )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";
+
+	var points_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
+
+	var points_vert = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <color_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";
+
+	var shadow_frag = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
+
+	var shadow_vert = "#include <common>\n#include <fog_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+	var sprite_frag = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\tgl_FragColor = vec4( outgoingLight, diffuseColor.a );\n\t#include <tonemapping_fragment>\n\t#include <encodings_fragment>\n\t#include <fog_fragment>\n}";
+
+	var sprite_vert = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
+
+	var ShaderChunk = {
+		alphamap_fragment: alphamap_fragment,
+		alphamap_pars_fragment: alphamap_pars_fragment,
+		alphatest_fragment: alphatest_fragment,
+		aomap_fragment: aomap_fragment,
+		aomap_pars_fragment: aomap_pars_fragment,
+		begin_vertex: begin_vertex,
+		beginnormal_vertex: beginnormal_vertex,
+		bsdfs: bsdfs,
+		bumpmap_pars_fragment: bumpmap_pars_fragment,
+		clipping_planes_fragment: clipping_planes_fragment,
+		clipping_planes_pars_fragment: clipping_planes_pars_fragment,
+		clipping_planes_pars_vertex: clipping_planes_pars_vertex,
+		clipping_planes_vertex: clipping_planes_vertex,
+		color_fragment: color_fragment,
+		color_pars_fragment: color_pars_fragment,
+		color_pars_vertex: color_pars_vertex,
+		color_vertex: color_vertex,
+		common: common,
+		cube_uv_reflection_fragment: cube_uv_reflection_fragment,
+		defaultnormal_vertex: defaultnormal_vertex,
+		displacementmap_pars_vertex: displacementmap_pars_vertex,
+		displacementmap_vertex: displacementmap_vertex,
+		emissivemap_fragment: emissivemap_fragment,
+		emissivemap_pars_fragment: emissivemap_pars_fragment,
+		encodings_fragment: encodings_fragment,
+		encodings_pars_fragment: encodings_pars_fragment,
+		envmap_fragment: envmap_fragment,
+		envmap_common_pars_fragment: envmap_common_pars_fragment,
+		envmap_pars_fragment: envmap_pars_fragment,
+		envmap_pars_vertex: envmap_pars_vertex,
+		envmap_physical_pars_fragment: envmap_physical_pars_fragment,
+		envmap_vertex: envmap_vertex,
+		fog_vertex: fog_vertex,
+		fog_pars_vertex: fog_pars_vertex,
+		fog_fragment: fog_fragment,
+		fog_pars_fragment: fog_pars_fragment,
+		gradientmap_pars_fragment: gradientmap_pars_fragment,
+		lightmap_fragment: lightmap_fragment,
+		lightmap_pars_fragment: lightmap_pars_fragment,
+		lights_lambert_vertex: lights_lambert_vertex,
+		lights_pars_begin: lights_pars_begin,
+		lights_toon_fragment: lights_toon_fragment,
+		lights_toon_pars_fragment: lights_toon_pars_fragment,
+		lights_phong_fragment: lights_phong_fragment,
+		lights_phong_pars_fragment: lights_phong_pars_fragment,
+		lights_physical_fragment: lights_physical_fragment,
+		lights_physical_pars_fragment: lights_physical_pars_fragment,
+		lights_fragment_begin: lights_fragment_begin,
+		lights_fragment_maps: lights_fragment_maps,
+		lights_fragment_end: lights_fragment_end,
+		logdepthbuf_fragment: logdepthbuf_fragment,
+		logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
+		logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
+		logdepthbuf_vertex: logdepthbuf_vertex,
+		map_fragment: map_fragment,
+		map_pars_fragment: map_pars_fragment,
+		map_particle_fragment: map_particle_fragment,
+		map_particle_pars_fragment: map_particle_pars_fragment,
+		metalnessmap_fragment: metalnessmap_fragment,
+		metalnessmap_pars_fragment: metalnessmap_pars_fragment,
+		morphnormal_vertex: morphnormal_vertex,
+		morphtarget_pars_vertex: morphtarget_pars_vertex,
+		morphtarget_vertex: morphtarget_vertex,
+		normal_fragment_begin: normal_fragment_begin,
+		normal_fragment_maps: normal_fragment_maps,
+		normalmap_pars_fragment: normalmap_pars_fragment,
+		clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
+		clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
+		clearcoat_pars_fragment: clearcoat_pars_fragment,
+		packing: packing,
+		premultiplied_alpha_fragment: premultiplied_alpha_fragment,
+		project_vertex: project_vertex,
+		dithering_fragment: dithering_fragment,
+		dithering_pars_fragment: dithering_pars_fragment,
+		roughnessmap_fragment: roughnessmap_fragment,
+		roughnessmap_pars_fragment: roughnessmap_pars_fragment,
+		shadowmap_pars_fragment: shadowmap_pars_fragment,
+		shadowmap_pars_vertex: shadowmap_pars_vertex,
+		shadowmap_vertex: shadowmap_vertex,
+		shadowmask_pars_fragment: shadowmask_pars_fragment,
+		skinbase_vertex: skinbase_vertex,
+		skinning_pars_vertex: skinning_pars_vertex,
+		skinning_vertex: skinning_vertex,
+		skinnormal_vertex: skinnormal_vertex,
+		specularmap_fragment: specularmap_fragment,
+		specularmap_pars_fragment: specularmap_pars_fragment,
+		tonemapping_fragment: tonemapping_fragment,
+		tonemapping_pars_fragment: tonemapping_pars_fragment,
+		transmissionmap_fragment: transmissionmap_fragment,
+		transmissionmap_pars_fragment: transmissionmap_pars_fragment,
+		uv_pars_fragment: uv_pars_fragment,
+		uv_pars_vertex: uv_pars_vertex,
+		uv_vertex: uv_vertex,
+		uv2_pars_fragment: uv2_pars_fragment,
+		uv2_pars_vertex: uv2_pars_vertex,
+		uv2_vertex: uv2_vertex,
+		worldpos_vertex: worldpos_vertex,
+		background_frag: background_frag,
+		background_vert: background_vert,
+		cube_frag: cube_frag,
+		cube_vert: cube_vert,
+		depth_frag: depth_frag,
+		depth_vert: depth_vert,
+		distanceRGBA_frag: distanceRGBA_frag,
+		distanceRGBA_vert: distanceRGBA_vert,
+		equirect_frag: equirect_frag,
+		equirect_vert: equirect_vert,
+		linedashed_frag: linedashed_frag,
+		linedashed_vert: linedashed_vert,
+		meshbasic_frag: meshbasic_frag,
+		meshbasic_vert: meshbasic_vert,
+		meshlambert_frag: meshlambert_frag,
+		meshlambert_vert: meshlambert_vert,
+		meshmatcap_frag: meshmatcap_frag,
+		meshmatcap_vert: meshmatcap_vert,
+		meshtoon_frag: meshtoon_frag,
+		meshtoon_vert: meshtoon_vert,
+		meshphong_frag: meshphong_frag,
+		meshphong_vert: meshphong_vert,
+		meshphysical_frag: meshphysical_frag,
+		meshphysical_vert: meshphysical_vert,
+		normal_frag: normal_frag,
+		normal_vert: normal_vert,
+		points_frag: points_frag,
+		points_vert: points_vert,
+		shadow_frag: shadow_frag,
+		shadow_vert: shadow_vert,
+		sprite_frag: sprite_frag,
+		sprite_vert: sprite_vert
+	};
+
+	/**
+	 * Uniforms library for shared webgl shaders
+	 */
+
+	var UniformsLib = {
+		common: {
+			diffuse: {
+				value: new Color(0xeeeeee)
+			},
+			opacity: {
+				value: 1.0
+			},
+			map: {
+				value: null
+			},
+			uvTransform: {
+				value: new Matrix3()
+			},
+			uv2Transform: {
+				value: new Matrix3()
+			},
+			alphaMap: {
+				value: null
+			}
+		},
+		specularmap: {
+			specularMap: {
+				value: null
+			}
+		},
+		envmap: {
+			envMap: {
+				value: null
+			},
+			flipEnvMap: {
+				value: -1
+			},
+			reflectivity: {
+				value: 1.0
+			},
+			refractionRatio: {
+				value: 0.98
+			},
+			maxMipLevel: {
+				value: 0
+			}
+		},
+		aomap: {
+			aoMap: {
+				value: null
+			},
+			aoMapIntensity: {
+				value: 1
+			}
+		},
+		lightmap: {
+			lightMap: {
+				value: null
+			},
+			lightMapIntensity: {
+				value: 1
+			}
+		},
+		emissivemap: {
+			emissiveMap: {
+				value: null
+			}
+		},
+		bumpmap: {
+			bumpMap: {
+				value: null
+			},
+			bumpScale: {
+				value: 1
+			}
+		},
+		normalmap: {
+			normalMap: {
+				value: null
+			},
+			normalScale: {
+				value: new Vector2(1, 1)
+			}
+		},
+		displacementmap: {
+			displacementMap: {
+				value: null
+			},
+			displacementScale: {
+				value: 1
+			},
+			displacementBias: {
+				value: 0
+			}
+		},
+		roughnessmap: {
+			roughnessMap: {
+				value: null
+			}
+		},
+		metalnessmap: {
+			metalnessMap: {
+				value: null
+			}
+		},
+		gradientmap: {
+			gradientMap: {
+				value: null
+			}
+		},
+		fog: {
+			fogDensity: {
+				value: 0.00025
+			},
+			fogNear: {
+				value: 1
+			},
+			fogFar: {
+				value: 2000
+			},
+			fogColor: {
+				value: new Color(0xffffff)
+			}
+		},
+		lights: {
+			ambientLightColor: {
+				value: []
+			},
+			lightProbe: {
+				value: []
+			},
+			directionalLights: {
+				value: [],
+				properties: {
+					direction: {},
+					color: {}
+				}
+			},
+			directionalLightShadows: {
+				value: [],
+				properties: {
+					shadowBias: {},
+					shadowNormalBias: {},
+					shadowRadius: {},
+					shadowMapSize: {}
+				}
+			},
+			directionalShadowMap: {
+				value: []
+			},
+			directionalShadowMatrix: {
+				value: []
+			},
+			spotLights: {
+				value: [],
+				properties: {
+					color: {},
+					position: {},
+					direction: {},
+					distance: {},
+					coneCos: {},
+					penumbraCos: {},
+					decay: {}
+				}
+			},
+			spotLightShadows: {
+				value: [],
+				properties: {
+					shadowBias: {},
+					shadowNormalBias: {},
+					shadowRadius: {},
+					shadowMapSize: {}
+				}
+			},
+			spotShadowMap: {
+				value: []
+			},
+			spotShadowMatrix: {
+				value: []
+			},
+			pointLights: {
+				value: [],
+				properties: {
+					color: {},
+					position: {},
+					decay: {},
+					distance: {}
+				}
+			},
+			pointLightShadows: {
+				value: [],
+				properties: {
+					shadowBias: {},
+					shadowNormalBias: {},
+					shadowRadius: {},
+					shadowMapSize: {},
+					shadowCameraNear: {},
+					shadowCameraFar: {}
+				}
+			},
+			pointShadowMap: {
+				value: []
+			},
+			pointShadowMatrix: {
+				value: []
+			},
+			hemisphereLights: {
+				value: [],
+				properties: {
+					direction: {},
+					skyColor: {},
+					groundColor: {}
+				}
+			},
+			// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
+			rectAreaLights: {
+				value: [],
+				properties: {
+					color: {},
+					position: {},
+					width: {},
+					height: {}
+				}
+			},
+			ltc_1: {
+				value: null
+			},
+			ltc_2: {
+				value: null
+			}
+		},
+		points: {
+			diffuse: {
+				value: new Color(0xeeeeee)
+			},
+			opacity: {
+				value: 1.0
+			},
+			size: {
+				value: 1.0
+			},
+			scale: {
+				value: 1.0
+			},
+			map: {
+				value: null
+			},
+			alphaMap: {
+				value: null
+			},
+			uvTransform: {
+				value: new Matrix3()
+			}
+		},
+		sprite: {
+			diffuse: {
+				value: new Color(0xeeeeee)
+			},
+			opacity: {
+				value: 1.0
+			},
+			center: {
+				value: new Vector2(0.5, 0.5)
+			},
+			rotation: {
+				value: 0.0
+			},
+			map: {
+				value: null
+			},
+			alphaMap: {
+				value: null
+			},
+			uvTransform: {
+				value: new Matrix3()
+			}
+		}
+	};
+
+	var ShaderLib = {
+		basic: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.fog]),
+			vertexShader: ShaderChunk.meshbasic_vert,
+			fragmentShader: ShaderChunk.meshbasic_frag
+		},
+		lambert: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				}
+			}]),
+			vertexShader: ShaderChunk.meshlambert_vert,
+			fragmentShader: ShaderChunk.meshlambert_frag
+		},
+		phong: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.specularmap, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				},
+				specular: {
+					value: new Color(0x111111)
+				},
+				shininess: {
+					value: 30
+				}
+			}]),
+			vertexShader: ShaderChunk.meshphong_vert,
+			fragmentShader: ShaderChunk.meshphong_frag
+		},
+		standard: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.envmap, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.roughnessmap, UniformsLib.metalnessmap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				},
+				roughness: {
+					value: 1.0
+				},
+				metalness: {
+					value: 0.0
+				},
+				envMapIntensity: {
+					value: 1
+				} // temporary
+
+			}]),
+			vertexShader: ShaderChunk.meshphysical_vert,
+			fragmentShader: ShaderChunk.meshphysical_frag
+		},
+		toon: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.aomap, UniformsLib.lightmap, UniformsLib.emissivemap, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.gradientmap, UniformsLib.fog, UniformsLib.lights, {
+				emissive: {
+					value: new Color(0x000000)
+				}
+			}]),
+			vertexShader: ShaderChunk.meshtoon_vert,
+			fragmentShader: ShaderChunk.meshtoon_frag
+		},
+		matcap: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, UniformsLib.fog, {
+				matcap: {
+					value: null
+				}
+			}]),
+			vertexShader: ShaderChunk.meshmatcap_vert,
+			fragmentShader: ShaderChunk.meshmatcap_frag
+		},
+		points: {
+			uniforms: mergeUniforms([UniformsLib.points, UniformsLib.fog]),
+			vertexShader: ShaderChunk.points_vert,
+			fragmentShader: ShaderChunk.points_frag
+		},
+		dashed: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.fog, {
+				scale: {
+					value: 1
+				},
+				dashSize: {
+					value: 1
+				},
+				totalSize: {
+					value: 2
+				}
+			}]),
+			vertexShader: ShaderChunk.linedashed_vert,
+			fragmentShader: ShaderChunk.linedashed_frag
+		},
+		depth: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.displacementmap]),
+			vertexShader: ShaderChunk.depth_vert,
+			fragmentShader: ShaderChunk.depth_frag
+		},
+		normal: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.bumpmap, UniformsLib.normalmap, UniformsLib.displacementmap, {
+				opacity: {
+					value: 1.0
+				}
+			}]),
+			vertexShader: ShaderChunk.normal_vert,
+			fragmentShader: ShaderChunk.normal_frag
+		},
+		sprite: {
+			uniforms: mergeUniforms([UniformsLib.sprite, UniformsLib.fog]),
+			vertexShader: ShaderChunk.sprite_vert,
+			fragmentShader: ShaderChunk.sprite_frag
+		},
+		background: {
+			uniforms: {
+				uvTransform: {
+					value: new Matrix3()
+				},
+				t2D: {
+					value: null
+				}
+			},
+			vertexShader: ShaderChunk.background_vert,
+			fragmentShader: ShaderChunk.background_frag
+		},
+
+		/* -------------------------------------------------------------------------
+		//	Cube map shader
+		 ------------------------------------------------------------------------- */
+		cube: {
+			uniforms: mergeUniforms([UniformsLib.envmap, {
+				opacity: {
+					value: 1.0
+				}
+			}]),
+			vertexShader: ShaderChunk.cube_vert,
+			fragmentShader: ShaderChunk.cube_frag
+		},
+		equirect: {
+			uniforms: {
+				tEquirect: {
+					value: null
+				}
+			},
+			vertexShader: ShaderChunk.equirect_vert,
+			fragmentShader: ShaderChunk.equirect_frag
+		},
+		distanceRGBA: {
+			uniforms: mergeUniforms([UniformsLib.common, UniformsLib.displacementmap, {
+				referencePosition: {
+					value: new Vector3()
+				},
+				nearDistance: {
+					value: 1
+				},
+				farDistance: {
+					value: 1000
+				}
+			}]),
+			vertexShader: ShaderChunk.distanceRGBA_vert,
+			fragmentShader: ShaderChunk.distanceRGBA_frag
+		},
+		shadow: {
+			uniforms: mergeUniforms([UniformsLib.lights, UniformsLib.fog, {
+				color: {
+					value: new Color(0x00000)
+				},
+				opacity: {
+					value: 1.0
+				}
+			}]),
+			vertexShader: ShaderChunk.shadow_vert,
+			fragmentShader: ShaderChunk.shadow_frag
+		}
+	};
+	ShaderLib.physical = {
+		uniforms: mergeUniforms([ShaderLib.standard.uniforms, {
+			clearcoat: {
+				value: 0
+			},
+			clearcoatMap: {
+				value: null
+			},
+			clearcoatRoughness: {
+				value: 0
+			},
+			clearcoatRoughnessMap: {
+				value: null
+			},
+			clearcoatNormalScale: {
+				value: new Vector2(1, 1)
+			},
+			clearcoatNormalMap: {
+				value: null
+			},
+			sheen: {
+				value: new Color(0x000000)
+			},
+			transmission: {
+				value: 0
+			},
+			transmissionMap: {
+				value: null
+			}
+		}]),
+		vertexShader: ShaderChunk.meshphysical_vert,
+		fragmentShader: ShaderChunk.meshphysical_frag
+	};
+
+	function WebGLBackground(renderer, cubemaps, state, objects, premultipliedAlpha) {
+		var clearColor = new Color(0x000000);
+		var clearAlpha = 0;
+		var planeMesh;
+		var boxMesh;
+		var currentBackground = null;
+		var currentBackgroundVersion = 0;
+		var currentTonemapping = null;
+
+		function render(renderList, scene, camera, forceClear) {
+			var background = scene.isScene === true ? scene.background : null;
+
+			if (background && background.isTexture) {
+				background = cubemaps.get(background);
+			} // Ignore background in AR
+			// TODO: Reconsider this.
+
+
+			var xr = renderer.xr;
+			var session = xr.getSession && xr.getSession();
+
+			if (session && session.environmentBlendMode === 'additive') {
+				background = null;
+			}
+
+			if (background === null) {
+				setClear(clearColor, clearAlpha);
+			} else if (background && background.isColor) {
+				setClear(background, 1);
+				forceClear = true;
+			}
+
+			if (renderer.autoClear || forceClear) {
+				renderer.clear(renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil);
+			}
+
+			if (background && (background.isCubeTexture || background.isWebGLCubeRenderTarget || background.mapping === CubeUVReflectionMapping)) {
+				if (boxMesh === undefined) {
+					boxMesh = new Mesh(new BoxGeometry(1, 1, 1), new ShaderMaterial({
+						name: 'BackgroundCubeMaterial',
+						uniforms: cloneUniforms(ShaderLib.cube.uniforms),
+						vertexShader: ShaderLib.cube.vertexShader,
+						fragmentShader: ShaderLib.cube.fragmentShader,
+						side: BackSide,
+						depthTest: false,
+						depthWrite: false,
+						fog: false
+					}));
+					boxMesh.geometry.deleteAttribute('normal');
+					boxMesh.geometry.deleteAttribute('uv');
+
+					boxMesh.onBeforeRender = function (renderer, scene, camera) {
+						this.matrixWorld.copyPosition(camera.matrixWorld);
+					}; // enable code injection for non-built-in material
+
+
+					Object.defineProperty(boxMesh.material, 'envMap', {
+						get: function get() {
+							return this.uniforms.envMap.value;
+						}
+					});
+					objects.update(boxMesh);
+				}
+
+				if (background.isWebGLCubeRenderTarget) {
+					// TODO Deprecate
+					background = background.texture;
+				}
+
+				boxMesh.material.uniforms.envMap.value = background;
+				boxMesh.material.uniforms.flipEnvMap.value = background.isCubeTexture && background._needsFlipEnvMap ? -1 : 1;
+
+				if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
+					boxMesh.material.needsUpdate = true;
+					currentBackground = background;
+					currentBackgroundVersion = background.version;
+					currentTonemapping = renderer.toneMapping;
+				} // push to the pre-sorted opaque render list
+
+
+				renderList.unshift(boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null);
+			} else if (background && background.isTexture) {
+				if (planeMesh === undefined) {
+					planeMesh = new Mesh(new PlaneGeometry(2, 2), new ShaderMaterial({
+						name: 'BackgroundMaterial',
+						uniforms: cloneUniforms(ShaderLib.background.uniforms),
+						vertexShader: ShaderLib.background.vertexShader,
+						fragmentShader: ShaderLib.background.fragmentShader,
+						side: FrontSide,
+						depthTest: false,
+						depthWrite: false,
+						fog: false
+					}));
+					planeMesh.geometry.deleteAttribute('normal'); // enable code injection for non-built-in material
+
+					Object.defineProperty(planeMesh.material, 'map', {
+						get: function get() {
+							return this.uniforms.t2D.value;
+						}
+					});
+					objects.update(planeMesh);
+				}
+
+				planeMesh.material.uniforms.t2D.value = background;
+
+				if (background.matrixAutoUpdate === true) {
+					background.updateMatrix();
+				}
+
+				planeMesh.material.uniforms.uvTransform.value.copy(background.matrix);
+
+				if (currentBackground !== background || currentBackgroundVersion !== background.version || currentTonemapping !== renderer.toneMapping) {
+					planeMesh.material.needsUpdate = true;
+					currentBackground = background;
+					currentBackgroundVersion = background.version;
+					currentTonemapping = renderer.toneMapping;
+				} // push to the pre-sorted opaque render list
+
+
+				renderList.unshift(planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null);
+			}
+		}
+
+		function setClear(color, alpha) {
+			state.buffers.color.setClear(color.r, color.g, color.b, alpha, premultipliedAlpha);
+		}
+
+		return {
+			getClearColor: function getClearColor() {
+				return clearColor;
+			},
+			setClearColor: function setClearColor(color, alpha) {
+				if (alpha === void 0) {
+					alpha = 1;
+				}
+
+				clearColor.set(color);
+				clearAlpha = alpha;
+				setClear(clearColor, clearAlpha);
+			},
+			getClearAlpha: function getClearAlpha() {
+				return clearAlpha;
+			},
+			setClearAlpha: function setClearAlpha(alpha) {
+				clearAlpha = alpha;
+				setClear(clearColor, clearAlpha);
+			},
+			render: render
+		};
+	}
+
+	function WebGLBindingStates(gl, extensions, attributes, capabilities) {
+		var maxVertexAttributes = gl.getParameter(34921);
+		var extension = capabilities.isWebGL2 ? null : extensions.get('OES_vertex_array_object');
+		var vaoAvailable = capabilities.isWebGL2 || extension !== null;
+		var bindingStates = {};
+		var defaultState = createBindingState(null);
+		var currentState = defaultState;
+
+		function setup(object, material, program, geometry, index) {
+			var updateBuffers = false;
+
+			if (vaoAvailable) {
+				var state = getBindingState(geometry, program, material);
+
+				if (currentState !== state) {
+					currentState = state;
+					bindVertexArrayObject(currentState.object);
+				}
+
+				updateBuffers = needsUpdate(geometry, index);
+				if (updateBuffers) saveCache(geometry, index);
+			} else {
+				var wireframe = material.wireframe === true;
+
+				if (currentState.geometry !== geometry.id || currentState.program !== program.id || currentState.wireframe !== wireframe) {
+					currentState.geometry = geometry.id;
+					currentState.program = program.id;
+					currentState.wireframe = wireframe;
+					updateBuffers = true;
+				}
+			}
+
+			if (object.isInstancedMesh === true) {
+				updateBuffers = true;
+			}
+
+			if (index !== null) {
+				attributes.update(index, 34963);
+			}
+
+			if (updateBuffers) {
+				setupVertexAttributes(object, material, program, geometry);
+
+				if (index !== null) {
+					gl.bindBuffer(34963, attributes.get(index).buffer);
+				}
+			}
+		}
+
+		function createVertexArrayObject() {
+			if (capabilities.isWebGL2) return gl.createVertexArray();
+			return extension.createVertexArrayOES();
+		}
+
+		function bindVertexArrayObject(vao) {
+			if (capabilities.isWebGL2) return gl.bindVertexArray(vao);
+			return extension.bindVertexArrayOES(vao);
+		}
+
+		function deleteVertexArrayObject(vao) {
+			if (capabilities.isWebGL2) return gl.deleteVertexArray(vao);
+			return extension.deleteVertexArrayOES(vao);
+		}
+
+		function getBindingState(geometry, program, material) {
+			var wireframe = material.wireframe === true;
+			var programMap = bindingStates[geometry.id];
+
+			if (programMap === undefined) {
+				programMap = {};
+				bindingStates[geometry.id] = programMap;
+			}
+
+			var stateMap = programMap[program.id];
+
+			if (stateMap === undefined) {
+				stateMap = {};
+				programMap[program.id] = stateMap;
+			}
+
+			var state = stateMap[wireframe];
+
+			if (state === undefined) {
+				state = createBindingState(createVertexArrayObject());
+				stateMap[wireframe] = state;
+			}
+
+			return state;
+		}
+
+		function createBindingState(vao) {
+			var newAttributes = [];
+			var enabledAttributes = [];
+			var attributeDivisors = [];
+
+			for (var i = 0; i < maxVertexAttributes; i++) {
+				newAttributes[i] = 0;
+				enabledAttributes[i] = 0;
+				attributeDivisors[i] = 0;
+			}
+
+			return {
+				// for backward compatibility on non-VAO support browser
+				geometry: null,
+				program: null,
+				wireframe: false,
+				newAttributes: newAttributes,
+				enabledAttributes: enabledAttributes,
+				attributeDivisors: attributeDivisors,
+				object: vao,
+				attributes: {},
+				index: null
+			};
+		}
+
+		function needsUpdate(geometry, index) {
+			var cachedAttributes = currentState.attributes;
+			var geometryAttributes = geometry.attributes;
+			var attributesNum = 0;
+
+			for (var key in geometryAttributes) {
+				var cachedAttribute = cachedAttributes[key];
+				var geometryAttribute = geometryAttributes[key];
+				if (cachedAttribute === undefined) return true;
+				if (cachedAttribute.attribute !== geometryAttribute) return true;
+				if (cachedAttribute.data !== geometryAttribute.data) return true;
+				attributesNum++;
+			}
+
+			if (currentState.attributesNum !== attributesNum) return true;
+			if (currentState.index !== index) return true;
+			return false;
+		}
+
+		function saveCache(geometry, index) {
+			var cache = {};
+			var attributes = geometry.attributes;
+			var attributesNum = 0;
+
+			for (var key in attributes) {
+				var attribute = attributes[key];
+				var data = {};
+				data.attribute = attribute;
+
+				if (attribute.data) {
+					data.data = attribute.data;
+				}
+
+				cache[key] = data;
+				attributesNum++;
+			}
+
+			currentState.attributes = cache;
+			currentState.attributesNum = attributesNum;
+			currentState.index = index;
+		}
+
+		function initAttributes() {
+			var newAttributes = currentState.newAttributes;
+
+			for (var i = 0, il = newAttributes.length; i < il; i++) {
+				newAttributes[i] = 0;
+			}
+		}
+
+		function enableAttribute(attribute) {
+			enableAttributeAndDivisor(attribute, 0);
+		}
+
+		function enableAttributeAndDivisor(attribute, meshPerAttribute) {
+			var newAttributes = currentState.newAttributes;
+			var enabledAttributes = currentState.enabledAttributes;
+			var attributeDivisors = currentState.attributeDivisors;
+			newAttributes[attribute] = 1;
+
+			if (enabledAttributes[attribute] === 0) {
+				gl.enableVertexAttribArray(attribute);
+				enabledAttributes[attribute] = 1;
+			}
+
+			if (attributeDivisors[attribute] !== meshPerAttribute) {
+				var _extension = capabilities.isWebGL2 ? gl : extensions.get('ANGLE_instanced_arrays');
+
+				_extension[capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE'](attribute, meshPerAttribute);
+
+				attributeDivisors[attribute] = meshPerAttribute;
+			}
+		}
+
+		function disableUnusedAttributes() {
+			var newAttributes = currentState.newAttributes;
+			var enabledAttributes = currentState.enabledAttributes;
+
+			for (var i = 0, il = enabledAttributes.length; i < il; i++) {
+				if (enabledAttributes[i] !== newAttributes[i]) {
+					gl.disableVertexAttribArray(i);
+					enabledAttributes[i] = 0;
+				}
+			}
+		}
+
+		function vertexAttribPointer(index, size, type, normalized, stride, offset) {
+			if (capabilities.isWebGL2 === true && (type === 5124 || type === 5125)) {
+				gl.vertexAttribIPointer(index, size, type, stride, offset);
+			} else {
+				gl.vertexAttribPointer(index, size, type, normalized, stride, offset);
+			}
+		}
+
+		function setupVertexAttributes(object, material, program, geometry) {
+			if (capabilities.isWebGL2 === false && (object.isInstancedMesh || geometry.isInstancedBufferGeometry)) {
+				if (extensions.get('ANGLE_instanced_arrays') === null) return;
+			}
+
+			initAttributes();
+			var geometryAttributes = geometry.attributes;
+			var programAttributes = program.getAttributes();
+			var materialDefaultAttributeValues = material.defaultAttributeValues;
+
+			for (var name in programAttributes) {
+				var programAttribute = programAttributes[name];
+
+				if (programAttribute >= 0) {
+					var geometryAttribute = geometryAttributes[name];
+
+					if (geometryAttribute !== undefined) {
+						var normalized = geometryAttribute.normalized;
+						var size = geometryAttribute.itemSize;
+						var attribute = attributes.get(geometryAttribute); // TODO Attribute may not be available on context restore
+
+						if (attribute === undefined) continue;
+						var buffer = attribute.buffer;
+						var type = attribute.type;
+						var bytesPerElement = attribute.bytesPerElement;
+
+						if (geometryAttribute.isInterleavedBufferAttribute) {
+							var data = geometryAttribute.data;
+							var stride = data.stride;
+							var offset = geometryAttribute.offset;
+
+							if (data && data.isInstancedInterleavedBuffer) {
+								enableAttributeAndDivisor(programAttribute, data.meshPerAttribute);
+
+								if (geometry._maxInstanceCount === undefined) {
+									geometry._maxInstanceCount = data.meshPerAttribute * data.count;
+								}
+							} else {
+								enableAttribute(programAttribute);
+							}
+
+							gl.bindBuffer(34962, buffer);
+							vertexAttribPointer(programAttribute, size, type, normalized, stride * bytesPerElement, offset * bytesPerElement);
+						} else {
+							if (geometryAttribute.isInstancedBufferAttribute) {
+								enableAttributeAndDivisor(programAttribute, geometryAttribute.meshPerAttribute);
+
+								if (geometry._maxInstanceCount === undefined) {
+									geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
+								}
+							} else {
+								enableAttribute(programAttribute);
+							}
+
+							gl.bindBuffer(34962, buffer);
+							vertexAttribPointer(programAttribute, size, type, normalized, 0, 0);
+						}
+					} else if (name === 'instanceMatrix') {
+						var _attribute = attributes.get(object.instanceMatrix); // TODO Attribute may not be available on context restore
+
+
+						if (_attribute === undefined) continue;
+						var _buffer = _attribute.buffer;
+						var _type = _attribute.type;
+						enableAttributeAndDivisor(programAttribute + 0, 1);
+						enableAttributeAndDivisor(programAttribute + 1, 1);
+						enableAttributeAndDivisor(programAttribute + 2, 1);
+						enableAttributeAndDivisor(programAttribute + 3, 1);
+						gl.bindBuffer(34962, _buffer);
+						gl.vertexAttribPointer(programAttribute + 0, 4, _type, false, 64, 0);
+						gl.vertexAttribPointer(programAttribute + 1, 4, _type, false, 64, 16);
+						gl.vertexAttribPointer(programAttribute + 2, 4, _type, false, 64, 32);
+						gl.vertexAttribPointer(programAttribute + 3, 4, _type, false, 64, 48);
+					} else if (name === 'instanceColor') {
+						var _attribute2 = attributes.get(object.instanceColor); // TODO Attribute may not be available on context restore
+
+
+						if (_attribute2 === undefined) continue;
+						var _buffer2 = _attribute2.buffer;
+						var _type2 = _attribute2.type;
+						enableAttributeAndDivisor(programAttribute, 1);
+						gl.bindBuffer(34962, _buffer2);
+						gl.vertexAttribPointer(programAttribute, 3, _type2, false, 12, 0);
+					} else if (materialDefaultAttributeValues !== undefined) {
+						var value = materialDefaultAttributeValues[name];
+
+						if (value !== undefined) {
+							switch (value.length) {
+								case 2:
+									gl.vertexAttrib2fv(programAttribute, value);
+									break;
+
+								case 3:
+									gl.vertexAttrib3fv(programAttribute, value);
+									break;
+
+								case 4:
+									gl.vertexAttrib4fv(programAttribute, value);
+									break;
+
+								default:
+									gl.vertexAttrib1fv(programAttribute, value);
+							}
+						}
+					}
+				}
+			}
+
+			disableUnusedAttributes();
+		}
+
+		function dispose() {
+			reset();
+
+			for (var geometryId in bindingStates) {
+				var programMap = bindingStates[geometryId];
+
+				for (var programId in programMap) {
+					var stateMap = programMap[programId];
+
+					for (var wireframe in stateMap) {
+						deleteVertexArrayObject(stateMap[wireframe].object);
+						delete stateMap[wireframe];
+					}
+
+					delete programMap[programId];
+				}
+
+				delete bindingStates[geometryId];
+			}
+		}
+
+		function releaseStatesOfGeometry(geometry) {
+			if (bindingStates[geometry.id] === undefined) return;
+			var programMap = bindingStates[geometry.id];
+
+			for (var programId in programMap) {
+				var stateMap = programMap[programId];
+
+				for (var wireframe in stateMap) {
+					deleteVertexArrayObject(stateMap[wireframe].object);
+					delete stateMap[wireframe];
+				}
+
+				delete programMap[programId];
+			}
+
+			delete bindingStates[geometry.id];
+		}
+
+		function releaseStatesOfProgram(program) {
+			for (var geometryId in bindingStates) {
+				var programMap = bindingStates[geometryId];
+				if (programMap[program.id] === undefined) continue;
+				var stateMap = programMap[program.id];
+
+				for (var wireframe in stateMap) {
+					deleteVertexArrayObject(stateMap[wireframe].object);
+					delete stateMap[wireframe];
+				}
+
+				delete programMap[program.id];
+			}
+		}
+
+		function reset() {
+			resetDefaultState();
+			if (currentState === defaultState) return;
+			currentState = defaultState;
+			bindVertexArrayObject(currentState.object);
+		} // for backward-compatilibity
+
+
+		function resetDefaultState() {
+			defaultState.geometry = null;
+			defaultState.program = null;
+			defaultState.wireframe = false;
+		}
+
+		return {
+			setup: setup,
+			reset: reset,
+			resetDefaultState: resetDefaultState,
+			dispose: dispose,
+			releaseStatesOfGeometry: releaseStatesOfGeometry,
+			releaseStatesOfProgram: releaseStatesOfProgram,
+			initAttributes: initAttributes,
+			enableAttribute: enableAttribute,
+			disableUnusedAttributes: disableUnusedAttributes
+		};
+	}
+
+	function WebGLBufferRenderer(gl, extensions, info, capabilities) {
+		var isWebGL2 = capabilities.isWebGL2;
+		var mode;
+
+		function setMode(value) {
+			mode = value;
+		}
+
+		function render(start, count) {
+			gl.drawArrays(mode, start, count);
+			info.update(count, mode, 1);
+		}
+
+		function renderInstances(start, count, primcount) {
+			if (primcount === 0) return;
+			var extension, methodName;
+
+			if (isWebGL2) {
+				extension = gl;
+				methodName = 'drawArraysInstanced';
+			} else {
+				extension = extensions.get('ANGLE_instanced_arrays');
+				methodName = 'drawArraysInstancedANGLE';
+
+				if (extension === null) {
+					console.error('THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.');
+					return;
+				}
+			}
+
+			extension[methodName](mode, start, count, primcount);
+			info.update(count, mode, primcount);
+		} //
+
+
+		this.setMode = setMode;
+		this.render = render;
+		this.renderInstances = renderInstances;
+	}
+
+	function WebGLCapabilities(gl, extensions, parameters) {
+		var maxAnisotropy;
+
+		function getMaxAnisotropy() {
+			if (maxAnisotropy !== undefined) return maxAnisotropy;
+
+			if (extensions.has('EXT_texture_filter_anisotropic') === true) {
+				var extension = extensions.get('EXT_texture_filter_anisotropic');
+				maxAnisotropy = gl.getParameter(extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT);
+			} else {
+				maxAnisotropy = 0;
+			}
+
+			return maxAnisotropy;
+		}
+
+		function getMaxPrecision(precision) {
+			if (precision === 'highp') {
+				if (gl.getShaderPrecisionFormat(35633, 36338).precision > 0 && gl.getShaderPrecisionFormat(35632, 36338).precision > 0) {
+					return 'highp';
+				}
+
+				precision = 'mediump';
+			}
+
+			if (precision === 'mediump') {
+				if (gl.getShaderPrecisionFormat(35633, 36337).precision > 0 && gl.getShaderPrecisionFormat(35632, 36337).precision > 0) {
+					return 'mediump';
+				}
+			}
+
+			return 'lowp';
+		}
+		/* eslint-disable no-undef */
+
+
+		var isWebGL2 = typeof WebGL2RenderingContext !== 'undefined' && gl instanceof WebGL2RenderingContext || typeof WebGL2ComputeRenderingContext !== 'undefined' && gl instanceof WebGL2ComputeRenderingContext;
+		/* eslint-enable no-undef */
+
+		var precision = parameters.precision !== undefined ? parameters.precision : 'highp';
+		var maxPrecision = getMaxPrecision(precision);
+
+		if (maxPrecision !== precision) {
+			console.warn('THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.');
+			precision = maxPrecision;
+		}
+
+		var logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
+		var maxTextures = gl.getParameter(34930);
+		var maxVertexTextures = gl.getParameter(35660);
+		var maxTextureSize = gl.getParameter(3379);
+		var maxCubemapSize = gl.getParameter(34076);
+		var maxAttributes = gl.getParameter(34921);
+		var maxVertexUniforms = gl.getParameter(36347);
+		var maxVaryings = gl.getParameter(36348);
+		var maxFragmentUniforms = gl.getParameter(36349);
+		var vertexTextures = maxVertexTextures > 0;
+		var floatFragmentTextures = isWebGL2 || extensions.has('OES_texture_float');
+		var floatVertexTextures = vertexTextures && floatFragmentTextures;
+		var maxSamples = isWebGL2 ? gl.getParameter(36183) : 0;
+		return {
+			isWebGL2: isWebGL2,
+			getMaxAnisotropy: getMaxAnisotropy,
+			getMaxPrecision: getMaxPrecision,
+			precision: precision,
+			logarithmicDepthBuffer: logarithmicDepthBuffer,
+			maxTextures: maxTextures,
+			maxVertexTextures: maxVertexTextures,
+			maxTextureSize: maxTextureSize,
+			maxCubemapSize: maxCubemapSize,
+			maxAttributes: maxAttributes,
+			maxVertexUniforms: maxVertexUniforms,
+			maxVaryings: maxVaryings,
+			maxFragmentUniforms: maxFragmentUniforms,
+			vertexTextures: vertexTextures,
+			floatFragmentTextures: floatFragmentTextures,
+			floatVertexTextures: floatVertexTextures,
+			maxSamples: maxSamples
+		};
+	}
+
+	function WebGLClipping(properties) {
+		var scope = this;
+		var globalState = null,
+				numGlobalPlanes = 0,
+				localClippingEnabled = false,
+				renderingShadows = false;
+		var plane = new Plane(),
+				viewNormalMatrix = new Matrix3(),
+				uniform = {
+			value: null,
+			needsUpdate: false
+		};
+		this.uniform = uniform;
+		this.numPlanes = 0;
+		this.numIntersection = 0;
+
+		this.init = function (planes, enableLocalClipping, camera) {
+			var enabled = planes.length !== 0 || enableLocalClipping || // enable state of previous frame - the clipping code has to
+			// run another frame in order to reset the state:
+			numGlobalPlanes !== 0 || localClippingEnabled;
+			localClippingEnabled = enableLocalClipping;
+			globalState = projectPlanes(planes, camera, 0);
+			numGlobalPlanes = planes.length;
+			return enabled;
+		};
+
+		this.beginShadows = function () {
+			renderingShadows = true;
+			projectPlanes(null);
+		};
+
+		this.endShadows = function () {
+			renderingShadows = false;
+			resetGlobalState();
+		};
+
+		this.setState = function (material, camera, useCache) {
+			var planes = material.clippingPlanes,
+					clipIntersection = material.clipIntersection,
+					clipShadows = material.clipShadows;
+			var materialProperties = properties.get(material);
+
+			if (!localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && !clipShadows) {
+				// there's no local clipping
+				if (renderingShadows) {
+					// there's no global clipping
+					projectPlanes(null);
+				} else {
+					resetGlobalState();
+				}
+			} else {
+				var nGlobal = renderingShadows ? 0 : numGlobalPlanes,
+						lGlobal = nGlobal * 4;
+				var dstArray = materialProperties.clippingState || null;
+				uniform.value = dstArray; // ensure unique state
+
+				dstArray = projectPlanes(planes, camera, lGlobal, useCache);
+
+				for (var i = 0; i !== lGlobal; ++i) {
+					dstArray[i] = globalState[i];
+				}
+
+				materialProperties.clippingState = dstArray;
+				this.numIntersection = clipIntersection ? this.numPlanes : 0;
+				this.numPlanes += nGlobal;
+			}
+		};
+
+		function resetGlobalState() {
+			if (uniform.value !== globalState) {
+				uniform.value = globalState;
+				uniform.needsUpdate = numGlobalPlanes > 0;
+			}
+
+			scope.numPlanes = numGlobalPlanes;
+			scope.numIntersection = 0;
+		}
+
+		function projectPlanes(planes, camera, dstOffset, skipTransform) {
+			var nPlanes = planes !== null ? planes.length : 0;
+			var dstArray = null;
+
+			if (nPlanes !== 0) {
+				dstArray = uniform.value;
+
+				if (skipTransform !== true || dstArray === null) {
+					var flatSize = dstOffset + nPlanes * 4,
+							viewMatrix = camera.matrixWorldInverse;
+					viewNormalMatrix.getNormalMatrix(viewMatrix);
+
+					if (dstArray === null || dstArray.length < flatSize) {
+						dstArray = new Float32Array(flatSize);
+					}
+
+					for (var i = 0, i4 = dstOffset; i !== nPlanes; ++i, i4 += 4) {
+						plane.copy(planes[i]).applyMatrix4(viewMatrix, viewNormalMatrix);
+						plane.normal.toArray(dstArray, i4);
+						dstArray[i4 + 3] = plane.constant;
+					}
+				}
+
+				uniform.value = dstArray;
+				uniform.needsUpdate = true;
+			}
+
+			scope.numPlanes = nPlanes;
+			scope.numIntersection = 0;
+			return dstArray;
+		}
+	}
+
+	function WebGLCubeMaps(renderer) {
+		var cubemaps = new WeakMap();
+
+		function mapTextureMapping(texture, mapping) {
+			if (mapping === EquirectangularReflectionMapping) {
+				texture.mapping = CubeReflectionMapping;
+			} else if (mapping === EquirectangularRefractionMapping) {
+				texture.mapping = CubeRefractionMapping;
+			}
+
+			return texture;
+		}
+
+		function get(texture) {
+			if (texture && texture.isTexture) {
+				var mapping = texture.mapping;
+
+				if (mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping) {
+					if (cubemaps.has(texture)) {
+						var cubemap = cubemaps.get(texture).texture;
+						return mapTextureMapping(cubemap, texture.mapping);
+					} else {
+						var image = texture.image;
+
+						if (image && image.height > 0) {
+							var currentRenderTarget = renderer.getRenderTarget();
+							var renderTarget = new WebGLCubeRenderTarget(image.height / 2);
+							renderTarget.fromEquirectangularTexture(renderer, texture);
+							cubemaps.set(texture, renderTarget);
+							renderer.setRenderTarget(currentRenderTarget);
+							texture.addEventListener('dispose', onTextureDispose);
+							return mapTextureMapping(renderTarget.texture, texture.mapping);
+						} else {
+							// image not yet ready. try the conversion next frame
+							return null;
+						}
+					}
+				}
+			}
+
+			return texture;
+		}
+
+		function onTextureDispose(event) {
+			var texture = event.target;
+			texture.removeEventListener('dispose', onTextureDispose);
+			var cubemap = cubemaps.get(texture);
+
+			if (cubemap !== undefined) {
+				cubemaps.delete(texture);
+				cubemap.dispose();
+			}
+		}
+
+		function dispose() {
+			cubemaps = new WeakMap();
+		}
+
+		return {
+			get: get,
+			dispose: dispose
+		};
+	}
+
+	function WebGLExtensions(gl) {
+		var extensions = {};
+
+		function getExtension(name) {
+			if (extensions[name] !== undefined) {
+				return extensions[name];
+			}
+
+			var extension;
+
+			switch (name) {
+				case 'WEBGL_depth_texture':
+					extension = gl.getExtension('WEBGL_depth_texture') || gl.getExtension('MOZ_WEBGL_depth_texture') || gl.getExtension('WEBKIT_WEBGL_depth_texture');
+					break;
+
+				case 'EXT_texture_filter_anisotropic':
+					extension = gl.getExtension('EXT_texture_filter_anisotropic') || gl.getExtension('MOZ_EXT_texture_filter_anisotropic') || gl.getExtension('WEBKIT_EXT_texture_filter_anisotropic');
+					break;
+
+				case 'WEBGL_compressed_texture_s3tc':
+					extension = gl.getExtension('WEBGL_compressed_texture_s3tc') || gl.getExtension('MOZ_WEBGL_compressed_texture_s3tc') || gl.getExtension('WEBKIT_WEBGL_compressed_texture_s3tc');
+					break;
+
+				case 'WEBGL_compressed_texture_pvrtc':
+					extension = gl.getExtension('WEBGL_compressed_texture_pvrtc') || gl.getExtension('WEBKIT_WEBGL_compressed_texture_pvrtc');
+					break;
+
+				default:
+					extension = gl.getExtension(name);
+			}
+
+			extensions[name] = extension;
+			return extension;
+		}
+
+		return {
+			has: function has(name) {
+				return getExtension(name) !== null;
+			},
+			init: function init(capabilities) {
+				if (capabilities.isWebGL2) {
+					getExtension('EXT_color_buffer_float');
+				} else {
+					getExtension('WEBGL_depth_texture');
+					getExtension('OES_texture_float');
+					getExtension('OES_texture_half_float');
+					getExtension('OES_texture_half_float_linear');
+					getExtension('OES_standard_derivatives');
+					getExtension('OES_element_index_uint');
+					getExtension('OES_vertex_array_object');
+					getExtension('ANGLE_instanced_arrays');
+				}
+
+				getExtension('OES_texture_float_linear');
+				getExtension('EXT_color_buffer_half_float');
+			},
+			get: function get(name) {
+				var extension = getExtension(name);
+
+				if (extension === null) {
+					console.warn('THREE.WebGLRenderer: ' + name + ' extension not supported.');
+				}
+
+				return extension;
+			}
+		};
+	}
+
+	function WebGLGeometries(gl, attributes, info, bindingStates) {
+		var geometries = {};
+		var wireframeAttributes = new WeakMap();
+
+		function onGeometryDispose(event) {
+			var geometry = event.target;
+
+			if (geometry.index !== null) {
+				attributes.remove(geometry.index);
+			}
+
+			for (var name in geometry.attributes) {
+				attributes.remove(geometry.attributes[name]);
+			}
+
+			geometry.removeEventListener('dispose', onGeometryDispose);
+			delete geometries[geometry.id];
+			var attribute = wireframeAttributes.get(geometry);
+
+			if (attribute) {
+				attributes.remove(attribute);
+				wireframeAttributes.delete(geometry);
+			}
+
+			bindingStates.releaseStatesOfGeometry(geometry);
+
+			if (geometry.isInstancedBufferGeometry === true) {
+				delete geometry._maxInstanceCount;
+			} //
+
+
+			info.memory.geometries--;
+		}
+
+		function get(object, geometry) {
+			if (geometries[geometry.id] === true) return geometry;
+			geometry.addEventListener('dispose', onGeometryDispose);
+			geometries[geometry.id] = true;
+			info.memory.geometries++;
+			return geometry;
+		}
+
+		function update(geometry) {
+			var geometryAttributes = geometry.attributes; // Updating index buffer in VAO now. See WebGLBindingStates.
+
+			for (var name in geometryAttributes) {
+				attributes.update(geometryAttributes[name], 34962);
+			} // morph targets
+
+
+			var morphAttributes = geometry.morphAttributes;
+
+			for (var _name in morphAttributes) {
+				var array = morphAttributes[_name];
+
+				for (var i = 0, l = array.length; i < l; i++) {
+					attributes.update(array[i], 34962);
+				}
+			}
+		}
+
+		function updateWireframeAttribute(geometry) {
+			var indices = [];
+			var geometryIndex = geometry.index;
+			var geometryPosition = geometry.attributes.position;
+			var version = 0;
+
+			if (geometryIndex !== null) {
+				var array = geometryIndex.array;
+				version = geometryIndex.version;
+
+				for (var i = 0, l = array.length; i < l; i += 3) {
+					var a = array[i + 0];
+					var b = array[i + 1];
+					var c = array[i + 2];
+					indices.push(a, b, b, c, c, a);
+				}
+			} else {
+				var _array = geometryPosition.array;
+				version = geometryPosition.version;
+
+				for (var _i = 0, _l = _array.length / 3 - 1; _i < _l; _i += 3) {
+					var _a = _i + 0;
+
+					var _b = _i + 1;
+
+					var _c = _i + 2;
+
+					indices.push(_a, _b, _b, _c, _c, _a);
+				}
+			}
+
+			var attribute = new (arrayMax(indices) > 65535 ? Uint32BufferAttribute : Uint16BufferAttribute)(indices, 1);
+			attribute.version = version; // Updating index buffer in VAO now. See WebGLBindingStates
+			//
+
+			var previousAttribute = wireframeAttributes.get(geometry);
+			if (previousAttribute) attributes.remove(previousAttribute); //
+
+			wireframeAttributes.set(geometry, attribute);
+		}
+
+		function getWireframeAttribute(geometry) {
+			var currentAttribute = wireframeAttributes.get(geometry);
+
+			if (currentAttribute) {
+				var geometryIndex = geometry.index;
+
+				if (geometryIndex !== null) {
+					// if the attribute is obsolete, create a new one
+					if (currentAttribute.version < geometryIndex.version) {
+						updateWireframeAttribute(geometry);
+					}
+				}
+			} else {
+				updateWireframeAttribute(geometry);
+			}
+
+			return wireframeAttributes.get(geometry);
+		}
+
+		return {
+			get: get,
+			update: update,
+			getWireframeAttribute: getWireframeAttribute
+		};
+	}
+
+	function WebGLIndexedBufferRenderer(gl, extensions, info, capabilities) {
+		var isWebGL2 = capabilities.isWebGL2;
+		var mode;
+
+		function setMode(value) {
+			mode = value;
+		}
+
+		var type, bytesPerElement;
+
+		function setIndex(value) {
+			type = value.type;
+			bytesPerElement = value.bytesPerElement;
+		}
+
+		function render(start, count) {
+			gl.drawElements(mode, count, type, start * bytesPerElement);
+			info.update(count, mode, 1);
+		}
+
+		function renderInstances(start, count, primcount) {
+			if (primcount === 0) return;
+			var extension, methodName;
+
+			if (isWebGL2) {
+				extension = gl;
+				methodName = 'drawElementsInstanced';
+			} else {
+				extension = extensions.get('ANGLE_instanced_arrays');
+				methodName = 'drawElementsInstancedANGLE';
+
+				if (extension === null) {
+					console.error('THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.');
+					return;
+				}
+			}
+
+			extension[methodName](mode, count, type, start * bytesPerElement, primcount);
+			info.update(count, mode, primcount);
+		} //
+
+
+		this.setMode = setMode;
+		this.setIndex = setIndex;
+		this.render = render;
+		this.renderInstances = renderInstances;
+	}
+
+	function WebGLInfo(gl) {
+		var memory = {
+			geometries: 0,
+			textures: 0
+		};
+		var render = {
+			frame: 0,
+			calls: 0,
+			triangles: 0,
+			points: 0,
+			lines: 0
+		};
+
+		function update(count, mode, instanceCount) {
+			render.calls++;
+
+			switch (mode) {
+				case 4:
+					render.triangles += instanceCount * (count / 3);
+					break;
+
+				case 1:
+					render.lines += instanceCount * (count / 2);
+					break;
+
+				case 3:
+					render.lines += instanceCount * (count - 1);
+					break;
+
+				case 2:
+					render.lines += instanceCount * count;
+					break;
+
+				case 0:
+					render.points += instanceCount * count;
+					break;
+
+				default:
+					console.error('THREE.WebGLInfo: Unknown draw mode:', mode);
+					break;
+			}
+		}
+
+		function reset() {
+			render.frame++;
+			render.calls = 0;
+			render.triangles = 0;
+			render.points = 0;
+			render.lines = 0;
+		}
+
+		return {
+			memory: memory,
+			render: render,
+			programs: null,
+			autoReset: true,
+			reset: reset,
+			update: update
+		};
+	}
+
+	function numericalSort(a, b) {
+		return a[0] - b[0];
+	}
+
+	function absNumericalSort(a, b) {
+		return Math.abs(b[1]) - Math.abs(a[1]);
+	}
+
+	function WebGLMorphtargets(gl) {
+		var influencesList = {};
+		var morphInfluences = new Float32Array(8);
+		var workInfluences = [];
+
+		for (var i = 0; i < 8; i++) {
+			workInfluences[i] = [i, 0];
+		}
+
+		function update(object, geometry, material, program) {
+			var objectInfluences = object.morphTargetInfluences; // When object doesn't have morph target influences defined, we treat it as a 0-length array
+			// This is important to make sure we set up morphTargetBaseInfluence / morphTargetInfluences
+
+			var length = objectInfluences === undefined ? 0 : objectInfluences.length;
+			var influences = influencesList[geometry.id];
+
+			if (influences === undefined) {
+				// initialise list
+				influences = [];
+
+				for (var _i = 0; _i < length; _i++) {
+					influences[_i] = [_i, 0];
+				}
+
+				influencesList[geometry.id] = influences;
+			} // Collect influences
+
+
+			for (var _i2 = 0; _i2 < length; _i2++) {
+				var influence = influences[_i2];
+				influence[0] = _i2;
+				influence[1] = objectInfluences[_i2];
+			}
+
+			influences.sort(absNumericalSort);
+
+			for (var _i3 = 0; _i3 < 8; _i3++) {
+				if (_i3 < length && influences[_i3][1]) {
+					workInfluences[_i3][0] = influences[_i3][0];
+					workInfluences[_i3][1] = influences[_i3][1];
+				} else {
+					workInfluences[_i3][0] = Number.MAX_SAFE_INTEGER;
+					workInfluences[_i3][1] = 0;
+				}
+			}
+
+			workInfluences.sort(numericalSort);
+			var morphTargets = material.morphTargets && geometry.morphAttributes.position;
+			var morphNormals = material.morphNormals && geometry.morphAttributes.normal;
+			var morphInfluencesSum = 0;
+
+			for (var _i4 = 0; _i4 < 8; _i4++) {
+				var _influence = workInfluences[_i4];
+				var index = _influence[0];
+				var value = _influence[1];
+
+				if (index !== Number.MAX_SAFE_INTEGER && value) {
+					if (morphTargets && geometry.getAttribute('morphTarget' + _i4) !== morphTargets[index]) {
+						geometry.setAttribute('morphTarget' + _i4, morphTargets[index]);
+					}
+
+					if (morphNormals && geometry.getAttribute('morphNormal' + _i4) !== morphNormals[index]) {
+						geometry.setAttribute('morphNormal' + _i4, morphNormals[index]);
+					}
+
+					morphInfluences[_i4] = value;
+					morphInfluencesSum += value;
+				} else {
+					if (morphTargets && geometry.hasAttribute('morphTarget' + _i4) === true) {
+						geometry.deleteAttribute('morphTarget' + _i4);
+					}
+
+					if (morphNormals && geometry.hasAttribute('morphNormal' + _i4) === true) {
+						geometry.deleteAttribute('morphNormal' + _i4);
+					}
+
+					morphInfluences[_i4] = 0;
+				}
+			} // GLSL shader uses formula baseinfluence * base + sum(target * influence)
+			// This allows us to switch between absolute morphs and relative morphs without changing shader code
+			// When baseinfluence = 1 - sum(influence), the above is equivalent to sum((target - base) * influence)
+
+
+			var morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
+			program.getUniforms().setValue(gl, 'morphTargetBaseInfluence', morphBaseInfluence);
+			program.getUniforms().setValue(gl, 'morphTargetInfluences', morphInfluences);
+		}
+
+		return {
+			update: update
+		};
+	}
+
+	function WebGLObjects(gl, geometries, attributes, info) {
+		var updateMap = new WeakMap();
+
+		function update(object) {
+			var frame = info.render.frame;
+			var geometry = object.geometry;
+			var buffergeometry = geometries.get(object, geometry); // Update once per frame
+
+			if (updateMap.get(buffergeometry) !== frame) {
+				geometries.update(buffergeometry);
+				updateMap.set(buffergeometry, frame);
+			}
+
+			if (object.isInstancedMesh) {
+				if (object.hasEventListener('dispose', onInstancedMeshDispose) === false) {
+					object.addEventListener('dispose', onInstancedMeshDispose);
+				}
+
+				attributes.update(object.instanceMatrix, 34962);
+
+				if (object.instanceColor !== null) {
+					attributes.update(object.instanceColor, 34962);
+				}
+			}
+
+			return buffergeometry;
+		}
+
+		function dispose() {
+			updateMap = new WeakMap();
+		}
+
+		function onInstancedMeshDispose(event) {
+			var instancedMesh = event.target;
+			instancedMesh.removeEventListener('dispose', onInstancedMeshDispose);
+			attributes.remove(instancedMesh.instanceMatrix);
+			if (instancedMesh.instanceColor !== null) attributes.remove(instancedMesh.instanceColor);
+		}
+
+		return {
+			update: update,
+			dispose: dispose
+		};
+	}
+
+	var DataTexture2DArray = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(DataTexture2DArray, _Texture);
+
+		function DataTexture2DArray(data, width, height, depth) {
+			var _this;
+
+			if (data === void 0) {
+				data = null;
+			}
+
+			if (width === void 0) {
+				width = 1;
+			}
+
+			if (height === void 0) {
+				height = 1;
+			}
+
+			if (depth === void 0) {
+				depth = 1;
+			}
+
+			_this = _Texture.call(this, null) || this;
+			_this.image = {
+				data: data,
+				width: width,
+				height: height,
+				depth: depth
+			};
+			_this.magFilter = NearestFilter;
+			_this.minFilter = NearestFilter;
+			_this.wrapR = ClampToEdgeWrapping;
+			_this.generateMipmaps = false;
+			_this.flipY = false;
+			_this.needsUpdate = true;
+			return _this;
+		}
+
+		return DataTexture2DArray;
+	}(Texture);
+
+	DataTexture2DArray.prototype.isDataTexture2DArray = true;
+
+	var DataTexture3D = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(DataTexture3D, _Texture);
+
+		function DataTexture3D(data, width, height, depth) {
+			var _this;
+
+			if (data === void 0) {
+				data = null;
+			}
+
+			if (width === void 0) {
+				width = 1;
+			}
+
+			if (height === void 0) {
+				height = 1;
+			}
+
+			if (depth === void 0) {
+				depth = 1;
+			}
+
+			// We're going to add .setXXX() methods for setting properties later.
+			// Users can still set in DataTexture3D directly.
+			//
+			//	const texture = new THREE.DataTexture3D( data, width, height, depth );
+			// 	texture.anisotropy = 16;
+			//
+			// See #14839
+			_this = _Texture.call(this, null) || this;
+			_this.image = {
+				data: data,
+				width: width,
+				height: height,
+				depth: depth
+			};
+			_this.magFilter = NearestFilter;
+			_this.minFilter = NearestFilter;
+			_this.wrapR = ClampToEdgeWrapping;
+			_this.generateMipmaps = false;
+			_this.flipY = false;
+			_this.needsUpdate = true;
+			return _this;
+		}
+
+		return DataTexture3D;
+	}(Texture);
+
+	DataTexture3D.prototype.isDataTexture3D = true;
+
+	/**
+	 * Uniforms of a program.
+	 * Those form a tree structure with a special top-level container for the root,
+	 * which you get by calling 'new WebGLUniforms( gl, program )'.
+	 *
+	 *
+	 * Properties of inner nodes including the top-level container:
+	 *
+	 * .seq - array of nested uniforms
+	 * .map - nested uniforms by name
+	 *
+	 *
+	 * Methods of all nodes except the top-level container:
+	 *
+	 * .setValue( gl, value, [textures] )
+	 *
+	 * 		uploads a uniform value(s)
+	 *		the 'textures' parameter is needed for sampler uniforms
+	 *
+	 *
+	 * Static methods of the top-level container (textures factorizations):
+	 *
+	 * .upload( gl, seq, values, textures )
+	 *
+	 * 		sets uniforms in 'seq' to 'values[id].value'
+	 *
+	 * .seqWithValue( seq, values ) : filteredSeq
+	 *
+	 * 		filters 'seq' entries with corresponding entry in values
+	 *
+	 *
+	 * Methods of the top-level container (textures factorizations):
+	 *
+	 * .setValue( gl, name, value, textures )
+	 *
+	 * 		sets uniform with	name 'name' to 'value'
+	 *
+	 * .setOptional( gl, obj, prop )
+	 *
+	 * 		like .set for an optional property of the object
+	 *
+	 */
+	var emptyTexture = new Texture();
+	var emptyTexture2dArray = new DataTexture2DArray();
+	var emptyTexture3d = new DataTexture3D();
+	var emptyCubeTexture = new CubeTexture(); // --- Utilities ---
+	// Array Caches (provide typed arrays for temporary by size)
+
+	var arrayCacheF32 = [];
+	var arrayCacheI32 = []; // Float32Array caches used for uploading Matrix uniforms
+
+	var mat4array = new Float32Array(16);
+	var mat3array = new Float32Array(9);
+	var mat2array = new Float32Array(4); // Flattening for arrays of vectors and matrices
+
+	function flatten(array, nBlocks, blockSize) {
+		var firstElem = array[0];
+		if (firstElem <= 0 || firstElem > 0) return array; // unoptimized: ! isNaN( firstElem )
+		// see http://jacksondunstan.com/articles/983
+
+		var n = nBlocks * blockSize;
+		var r = arrayCacheF32[n];
+
+		if (r === undefined) {
+			r = new Float32Array(n);
+			arrayCacheF32[n] = r;
+		}
+
+		if (nBlocks !== 0) {
+			firstElem.toArray(r, 0);
+
+			for (var i = 1, offset = 0; i !== nBlocks; ++i) {
+				offset += blockSize;
+				array[i].toArray(r, offset);
+			}
+		}
+
+		return r;
+	}
+
+	function arraysEqual(a, b) {
+		if (a.length !== b.length) return false;
+
+		for (var i = 0, l = a.length; i < l; i++) {
+			if (a[i] !== b[i]) return false;
+		}
+
+		return true;
+	}
+
+	function copyArray(a, b) {
+		for (var i = 0, l = b.length; i < l; i++) {
+			a[i] = b[i];
+		}
+	} // Texture unit allocation
+
+
+	function allocTexUnits(textures, n) {
+		var r = arrayCacheI32[n];
+
+		if (r === undefined) {
+			r = new Int32Array(n);
+			arrayCacheI32[n] = r;
+		}
+
+		for (var i = 0; i !== n; ++i) {
+			r[i] = textures.allocateTextureUnit();
+		}
+
+		return r;
+	} // --- Setters ---
+	// Note: Defining these methods externally, because they come in a bunch
+	// and this way their names minify.
+	// Single scalar
+
+
+	function setValueV1f(gl, v) {
+		var cache = this.cache;
+		if (cache[0] === v) return;
+		gl.uniform1f(this.addr, v);
+		cache[0] = v;
+	} // Single float vector (from flat array or THREE.VectorN)
+
+
+	function setValueV2f(gl, v) {
+		var cache = this.cache;
+
+		if (v.x !== undefined) {
+			if (cache[0] !== v.x || cache[1] !== v.y) {
+				gl.uniform2f(this.addr, v.x, v.y);
+				cache[0] = v.x;
+				cache[1] = v.y;
+			}
+		} else {
+			if (arraysEqual(cache, v)) return;
+			gl.uniform2fv(this.addr, v);
+			copyArray(cache, v);
+		}
+	}
+
+	function setValueV3f(gl, v) {
+		var cache = this.cache;
+
+		if (v.x !== undefined) {
+			if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z) {
+				gl.uniform3f(this.addr, v.x, v.y, v.z);
+				cache[0] = v.x;
+				cache[1] = v.y;
+				cache[2] = v.z;
+			}
+		} else if (v.r !== undefined) {
+			if (cache[0] !== v.r || cache[1] !== v.g || cache[2] !== v.b) {
+				gl.uniform3f(this.addr, v.r, v.g, v.b);
+				cache[0] = v.r;
+				cache[1] = v.g;
+				cache[2] = v.b;
+			}
+		} else {
+			if (arraysEqual(cache, v)) return;
+			gl.uniform3fv(this.addr, v);
+			copyArray(cache, v);
+		}
+	}
+
+	function setValueV4f(gl, v) {
+		var cache = this.cache;
+
+		if (v.x !== undefined) {
+			if (cache[0] !== v.x || cache[1] !== v.y || cache[2] !== v.z || cache[3] !== v.w) {
+				gl.uniform4f(this.addr, v.x, v.y, v.z, v.w);
+				cache[0] = v.x;
+				cache[1] = v.y;
+				cache[2] = v.z;
+				cache[3] = v.w;
+			}
+		} else {
+			if (arraysEqual(cache, v)) return;
+			gl.uniform4fv(this.addr, v);
+			copyArray(cache, v);
+		}
+	} // Single matrix (from flat array or MatrixN)
+
+
+	function setValueM2(gl, v) {
+		var cache = this.cache;
+		var elements = v.elements;
+
+		if (elements === undefined) {
+			if (arraysEqual(cache, v)) return;
+			gl.uniformMatrix2fv(this.addr, false, v);
+			copyArray(cache, v);
+		} else {
+			if (arraysEqual(cache, elements)) return;
+			mat2array.set(elements);
+			gl.uniformMatrix2fv(this.addr, false, mat2array);
+			copyArray(cache, elements);
+		}
+	}
+
+	function setValueM3(gl, v) {
+		var cache = this.cache;
+		var elements = v.elements;
+
+		if (elements === undefined) {
+			if (arraysEqual(cache, v)) return;
+			gl.uniformMatrix3fv(this.addr, false, v);
+			copyArray(cache, v);
+		} else {
+			if (arraysEqual(cache, elements)) return;
+			mat3array.set(elements);
+			gl.uniformMatrix3fv(this.addr, false, mat3array);
+			copyArray(cache, elements);
+		}
+	}
+
+	function setValueM4(gl, v) {
+		var cache = this.cache;
+		var elements = v.elements;
+
+		if (elements === undefined) {
+			if (arraysEqual(cache, v)) return;
+			gl.uniformMatrix4fv(this.addr, false, v);
+			copyArray(cache, v);
+		} else {
+			if (arraysEqual(cache, elements)) return;
+			mat4array.set(elements);
+			gl.uniformMatrix4fv(this.addr, false, mat4array);
+			copyArray(cache, elements);
+		}
+	} // Single texture (2D / Cube)
+
+
+	function setValueT1(gl, v, textures) {
+		var cache = this.cache;
+		var unit = textures.allocateTextureUnit();
+
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
+
+		textures.safeSetTexture2D(v || emptyTexture, unit);
+	}
+
+	function setValueT2DArray1(gl, v, textures) {
+		var cache = this.cache;
+		var unit = textures.allocateTextureUnit();
+
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
+
+		textures.setTexture2DArray(v || emptyTexture2dArray, unit);
+	}
+
+	function setValueT3D1(gl, v, textures) {
+		var cache = this.cache;
+		var unit = textures.allocateTextureUnit();
+
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
+
+		textures.setTexture3D(v || emptyTexture3d, unit);
+	}
+
+	function setValueT6(gl, v, textures) {
+		var cache = this.cache;
+		var unit = textures.allocateTextureUnit();
+
+		if (cache[0] !== unit) {
+			gl.uniform1i(this.addr, unit);
+			cache[0] = unit;
+		}
+
+		textures.safeSetTextureCube(v || emptyCubeTexture, unit);
+	} // Integer / Boolean vectors or arrays thereof (always flat arrays)
+
+
+	function setValueV1i(gl, v) {
+		var cache = this.cache;
+		if (cache[0] === v) return;
+		gl.uniform1i(this.addr, v);
+		cache[0] = v;
+	}
+
+	function setValueV2i(gl, v) {
+		var cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform2iv(this.addr, v);
+		copyArray(cache, v);
+	}
+
+	function setValueV3i(gl, v) {
+		var cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform3iv(this.addr, v);
+		copyArray(cache, v);
+	}
+
+	function setValueV4i(gl, v) {
+		var cache = this.cache;
+		if (arraysEqual(cache, v)) return;
+		gl.uniform4iv(this.addr, v);
+		copyArray(cache, v);
+	} // uint
+
+
+	function setValueV1ui(gl, v) {
+		var cache = this.cache;
+		if (cache[0] === v) return;
+		gl.uniform1ui(this.addr, v);
+		cache[0] = v;
+	} // Helper to pick the right setter for the singular case
+
+
+	function getSingularSetter(type) {
+		switch (type) {
+			case 0x1406:
+				return setValueV1f;
+			// FLOAT
+
+			case 0x8b50:
+				return setValueV2f;
+			// _VEC2
+
+			case 0x8b51:
+				return setValueV3f;
+			// _VEC3
+
+			case 0x8b52:
+				return setValueV4f;
+			// _VEC4
+
+			case 0x8b5a:
+				return setValueM2;
+			// _MAT2
+
+			case 0x8b5b:
+				return setValueM3;
+			// _MAT3
+
+			case 0x8b5c:
+				return setValueM4;
+			// _MAT4
+
+			case 0x1404:
+			case 0x8b56:
+				return setValueV1i;
+			// INT, BOOL
+
+			case 0x8b53:
+			case 0x8b57:
+				return setValueV2i;
+			// _VEC2
+
+			case 0x8b54:
+			case 0x8b58:
+				return setValueV3i;
+			// _VEC3
+
+			case 0x8b55:
+			case 0x8b59:
+				return setValueV4i;
+			// _VEC4
+
+			case 0x1405:
+				return setValueV1ui;
+			// UINT
+
+			case 0x8b5e: // SAMPLER_2D
+
+			case 0x8d66: // SAMPLER_EXTERNAL_OES
+
+			case 0x8dca: // INT_SAMPLER_2D
+
+			case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
+
+			case 0x8b62:
+				// SAMPLER_2D_SHADOW
+				return setValueT1;
+
+			case 0x8b5f: // SAMPLER_3D
+
+			case 0x8dcb: // INT_SAMPLER_3D
+
+			case 0x8dd3:
+				// UNSIGNED_INT_SAMPLER_3D
+				return setValueT3D1;
+
+			case 0x8b60: // SAMPLER_CUBE
+
+			case 0x8dcc: // INT_SAMPLER_CUBE
+
+			case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
+
+			case 0x8dc5:
+				// SAMPLER_CUBE_SHADOW
+				return setValueT6;
+
+			case 0x8dc1: // SAMPLER_2D_ARRAY
+
+			case 0x8dcf: // INT_SAMPLER_2D_ARRAY
+
+			case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
+
+			case 0x8dc4:
+				// SAMPLER_2D_ARRAY_SHADOW
+				return setValueT2DArray1;
+		}
+	} // Array of scalars
+
+
+	function setValueV1fArray(gl, v) {
+		gl.uniform1fv(this.addr, v);
+	} // Integer / Boolean vectors or arrays thereof (always flat arrays)
+
+
+	function setValueV1iArray(gl, v) {
+		gl.uniform1iv(this.addr, v);
+	}
+
+	function setValueV2iArray(gl, v) {
+		gl.uniform2iv(this.addr, v);
+	}
+
+	function setValueV3iArray(gl, v) {
+		gl.uniform3iv(this.addr, v);
+	}
+
+	function setValueV4iArray(gl, v) {
+		gl.uniform4iv(this.addr, v);
+	} // Array of vectors (flat or from THREE classes)
+
+
+	function setValueV2fArray(gl, v) {
+		var data = flatten(v, this.size, 2);
+		gl.uniform2fv(this.addr, data);
+	}
+
+	function setValueV3fArray(gl, v) {
+		var data = flatten(v, this.size, 3);
+		gl.uniform3fv(this.addr, data);
+	}
+
+	function setValueV4fArray(gl, v) {
+		var data = flatten(v, this.size, 4);
+		gl.uniform4fv(this.addr, data);
+	} // Array of matrices (flat or from THREE clases)
+
+
+	function setValueM2Array(gl, v) {
+		var data = flatten(v, this.size, 4);
+		gl.uniformMatrix2fv(this.addr, false, data);
+	}
+
+	function setValueM3Array(gl, v) {
+		var data = flatten(v, this.size, 9);
+		gl.uniformMatrix3fv(this.addr, false, data);
+	}
+
+	function setValueM4Array(gl, v) {
+		var data = flatten(v, this.size, 16);
+		gl.uniformMatrix4fv(this.addr, false, data);
+	} // Array of textures (2D / Cube)
+
+
+	function setValueT1Array(gl, v, textures) {
+		var n = v.length;
+		var units = allocTexUnits(textures, n);
+		gl.uniform1iv(this.addr, units);
+
+		for (var i = 0; i !== n; ++i) {
+			textures.safeSetTexture2D(v[i] || emptyTexture, units[i]);
+		}
+	}
+
+	function setValueT6Array(gl, v, textures) {
+		var n = v.length;
+		var units = allocTexUnits(textures, n);
+		gl.uniform1iv(this.addr, units);
+
+		for (var i = 0; i !== n; ++i) {
+			textures.safeSetTextureCube(v[i] || emptyCubeTexture, units[i]);
+		}
+	} // Helper to pick the right setter for a pure (bottom-level) array
+
+
+	function getPureArraySetter(type) {
+		switch (type) {
+			case 0x1406:
+				return setValueV1fArray;
+			// FLOAT
+
+			case 0x8b50:
+				return setValueV2fArray;
+			// _VEC2
+
+			case 0x8b51:
+				return setValueV3fArray;
+			// _VEC3
+
+			case 0x8b52:
+				return setValueV4fArray;
+			// _VEC4
+
+			case 0x8b5a:
+				return setValueM2Array;
+			// _MAT2
+
+			case 0x8b5b:
+				return setValueM3Array;
+			// _MAT3
+
+			case 0x8b5c:
+				return setValueM4Array;
+			// _MAT4
+
+			case 0x1404:
+			case 0x8b56:
+				return setValueV1iArray;
+			// INT, BOOL
+
+			case 0x8b53:
+			case 0x8b57:
+				return setValueV2iArray;
+			// _VEC2
+
+			case 0x8b54:
+			case 0x8b58:
+				return setValueV3iArray;
+			// _VEC3
+
+			case 0x8b55:
+			case 0x8b59:
+				return setValueV4iArray;
+			// _VEC4
+
+			case 0x8b5e: // SAMPLER_2D
+
+			case 0x8d66: // SAMPLER_EXTERNAL_OES
+
+			case 0x8dca: // INT_SAMPLER_2D
+
+			case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
+
+			case 0x8b62:
+				// SAMPLER_2D_SHADOW
+				return setValueT1Array;
+
+			case 0x8b60: // SAMPLER_CUBE
+
+			case 0x8dcc: // INT_SAMPLER_CUBE
+
+			case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
+
+			case 0x8dc5:
+				// SAMPLER_CUBE_SHADOW
+				return setValueT6Array;
+		}
+	} // --- Uniform Classes ---
+
+
+	function SingleUniform(id, activeInfo, addr) {
+		this.id = id;
+		this.addr = addr;
+		this.cache = [];
+		this.setValue = getSingularSetter(activeInfo.type); // this.path = activeInfo.name; // DEBUG
+	}
+
+	function PureArrayUniform(id, activeInfo, addr) {
+		this.id = id;
+		this.addr = addr;
+		this.cache = [];
+		this.size = activeInfo.size;
+		this.setValue = getPureArraySetter(activeInfo.type); // this.path = activeInfo.name; // DEBUG
+	}
+
+	PureArrayUniform.prototype.updateCache = function (data) {
+		var cache = this.cache;
+
+		if (data instanceof Float32Array && cache.length !== data.length) {
+			this.cache = new Float32Array(data.length);
+		}
+
+		copyArray(cache, data);
+	};
+
+	function StructuredUniform(id) {
+		this.id = id;
+		this.seq = [];
+		this.map = {};
+	}
+
+	StructuredUniform.prototype.setValue = function (gl, value, textures) {
+		var seq = this.seq;
+
+		for (var i = 0, n = seq.length; i !== n; ++i) {
+			var u = seq[i];
+			u.setValue(gl, value[u.id], textures);
+		}
+	}; // --- Top-level ---
+	// Parser - builds up the property tree from the path strings
+
+
+	var RePathPart = /(\w+)(\])?(\[|\.)?/g; // extracts
+	// 	- the identifier (member name or array index)
+	//	- followed by an optional right bracket (found when array index)
+	//	- followed by an optional left bracket or dot (type of subscript)
+	//
+	// Note: These portions can be read in a non-overlapping fashion and
+	// allow straightforward parsing of the hierarchy that WebGL encodes
+	// in the uniform names.
+
+	function addUniform(container, uniformObject) {
+		container.seq.push(uniformObject);
+		container.map[uniformObject.id] = uniformObject;
+	}
+
+	function parseUniform(activeInfo, addr, container) {
+		var path = activeInfo.name,
+				pathLength = path.length; // reset RegExp object, because of the early exit of a previous run
+
+		RePathPart.lastIndex = 0;
+
+		while (true) {
+			var match = RePathPart.exec(path),
+					matchEnd = RePathPart.lastIndex;
+			var id = match[1];
+			var idIsIndex = match[2] === ']',
+					subscript = match[3];
+			if (idIsIndex) id = id | 0; // convert to integer
+
+			if (subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength) {
+				// bare name or "pure" bottom-level array "[0]" suffix
+				addUniform(container, subscript === undefined ? new SingleUniform(id, activeInfo, addr) : new PureArrayUniform(id, activeInfo, addr));
+				break;
+			} else {
+				// step into inner node / create it in case it doesn't exist
+				var map = container.map;
+				var next = map[id];
+
+				if (next === undefined) {
+					next = new StructuredUniform(id);
+					addUniform(container, next);
+				}
+
+				container = next;
+			}
+		}
+	} // Root Container
+
+
+	function WebGLUniforms(gl, program) {
+		this.seq = [];
+		this.map = {};
+		var n = gl.getProgramParameter(program, 35718);
+
+		for (var i = 0; i < n; ++i) {
+			var info = gl.getActiveUniform(program, i),
+					addr = gl.getUniformLocation(program, info.name);
+			parseUniform(info, addr, this);
+		}
+	}
+
+	WebGLUniforms.prototype.setValue = function (gl, name, value, textures) {
+		var u = this.map[name];
+		if (u !== undefined) u.setValue(gl, value, textures);
+	};
+
+	WebGLUniforms.prototype.setOptional = function (gl, object, name) {
+		var v = object[name];
+		if (v !== undefined) this.setValue(gl, name, v);
+	}; // Static interface
+
+
+	WebGLUniforms.upload = function (gl, seq, values, textures) {
+		for (var i = 0, n = seq.length; i !== n; ++i) {
+			var u = seq[i],
+					v = values[u.id];
+
+			if (v.needsUpdate !== false) {
+				// note: always updating when .needsUpdate is undefined
+				u.setValue(gl, v.value, textures);
+			}
+		}
+	};
+
+	WebGLUniforms.seqWithValue = function (seq, values) {
+		var r = [];
+
+		for (var i = 0, n = seq.length; i !== n; ++i) {
+			var u = seq[i];
+			if (u.id in values) r.push(u);
+		}
+
+		return r;
+	};
+
+	function WebGLShader(gl, type, string) {
+		var shader = gl.createShader(type);
+		gl.shaderSource(shader, string);
+		gl.compileShader(shader);
+		return shader;
+	}
+
+	var programIdCount = 0;
+
+	function addLineNumbers(string) {
+		var lines = string.split('\n');
+
+		for (var i = 0; i < lines.length; i++) {
+			lines[i] = i + 1 + ': ' + lines[i];
+		}
+
+		return lines.join('\n');
+	}
+
+	function getEncodingComponents(encoding) {
+		switch (encoding) {
+			case LinearEncoding:
+				return ['Linear', '( value )'];
+
+			case sRGBEncoding:
+				return ['sRGB', '( value )'];
+
+			case RGBEEncoding:
+				return ['RGBE', '( value )'];
+
+			case RGBM7Encoding:
+				return ['RGBM', '( value, 7.0 )'];
+
+			case RGBM16Encoding:
+				return ['RGBM', '( value, 16.0 )'];
+
+			case RGBDEncoding:
+				return ['RGBD', '( value, 256.0 )'];
+
+			case GammaEncoding:
+				return ['Gamma', '( value, float( GAMMA_FACTOR ) )'];
+
+			case LogLuvEncoding:
+				return ['LogLuv', '( value )'];
+
+			default:
+				console.warn('THREE.WebGLProgram: Unsupported encoding:', encoding);
+				return ['Linear', '( value )'];
+		}
+	}
+
+	function getShaderErrors(gl, shader, type) {
+		var status = gl.getShaderParameter(shader, 35713);
+		var log = gl.getShaderInfoLog(shader).trim();
+		if (status && log === '') return ''; // --enable-privileged-webgl-extension
+		// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );
+
+		var source = gl.getShaderSource(shader);
+		return 'THREE.WebGLShader: gl.getShaderInfoLog() ' + type + '\n' + log + addLineNumbers(source);
+	}
+
+	function getTexelDecodingFunction(functionName, encoding) {
+		var components = getEncodingComponents(encoding);
+		return 'vec4 ' + functionName + '( vec4 value ) { return ' + components[0] + 'ToLinear' + components[1] + '; }';
+	}
+
+	function getTexelEncodingFunction(functionName, encoding) {
+		var components = getEncodingComponents(encoding);
+		return 'vec4 ' + functionName + '( vec4 value ) { return LinearTo' + components[0] + components[1] + '; }';
+	}
+
+	function getToneMappingFunction(functionName, toneMapping) {
+		var toneMappingName;
+
+		switch (toneMapping) {
+			case LinearToneMapping:
+				toneMappingName = 'Linear';
+				break;
+
+			case ReinhardToneMapping:
+				toneMappingName = 'Reinhard';
+				break;
+
+			case CineonToneMapping:
+				toneMappingName = 'OptimizedCineon';
+				break;
+
+			case ACESFilmicToneMapping:
+				toneMappingName = 'ACESFilmic';
+				break;
+
+			case CustomToneMapping:
+				toneMappingName = 'Custom';
+				break;
+
+			default:
+				console.warn('THREE.WebGLProgram: Unsupported toneMapping:', toneMapping);
+				toneMappingName = 'Linear';
+		}
+
+		return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
+	}
+
+	function generateExtensions(parameters) {
+		var chunks = [parameters.extensionDerivatives || parameters.envMapCubeUV || parameters.bumpMap || parameters.tangentSpaceNormalMap || parameters.clearcoatNormalMap || parameters.flatShading || parameters.shaderID === 'physical' ? '#extension GL_OES_standard_derivatives : enable' : '', (parameters.extensionFragDepth || parameters.logarithmicDepthBuffer) && parameters.rendererExtensionFragDepth ? '#extension GL_EXT_frag_depth : enable' : '', parameters.extensionDrawBuffers && parameters.rendererExtensionDrawBuffers ? '#extension GL_EXT_draw_buffers : require' : '', (parameters.extensionShaderTextureLOD || parameters.envMap) && parameters.rendererExtensionShaderTextureLod ? '#extension GL_EXT_shader_texture_lod : enable' : ''];
+		return chunks.filter(filterEmptyLine).join('\n');
+	}
+
+	function generateDefines(defines) {
+		var chunks = [];
+
+		for (var name in defines) {
+			var value = defines[name];
+			if (value === false) continue;
+			chunks.push('#define ' + name + ' ' + value);
+		}
+
+		return chunks.join('\n');
+	}
+
+	function fetchAttributeLocations(gl, program) {
+		var attributes = {};
+		var n = gl.getProgramParameter(program, 35721);
+
+		for (var i = 0; i < n; i++) {
+			var info = gl.getActiveAttrib(program, i);
+			var name = info.name; // console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );
+
+			attributes[name] = gl.getAttribLocation(program, name);
+		}
+
+		return attributes;
+	}
+
+	function filterEmptyLine(string) {
+		return string !== '';
+	}
+
+	function replaceLightNums(string, parameters) {
+		return string.replace(/NUM_DIR_LIGHTS/g, parameters.numDirLights).replace(/NUM_SPOT_LIGHTS/g, parameters.numSpotLights).replace(/NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights).replace(/NUM_POINT_LIGHTS/g, parameters.numPointLights).replace(/NUM_HEMI_LIGHTS/g, parameters.numHemiLights).replace(/NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows).replace(/NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows).replace(/NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows);
+	}
+
+	function replaceClippingPlaneNums(string, parameters) {
+		return string.replace(/NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes).replace(/UNION_CLIPPING_PLANES/g, parameters.numClippingPlanes - parameters.numClipIntersection);
+	} // Resolve Includes
+
+
+	var includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;
+
+	function resolveIncludes(string) {
+		return string.replace(includePattern, includeReplacer);
+	}
+
+	function includeReplacer(match, include) {
+		var string = ShaderChunk[include];
+
+		if (string === undefined) {
+			throw new Error('Can not resolve #include <' + include + '>');
+		}
+
+		return resolveIncludes(string);
+	} // Unroll Loops
+
+
+	var deprecatedUnrollLoopPattern = /#pragma unroll_loop[\s]+?for \( int i \= (\d+)\; i < (\d+)\; i \+\+ \) \{([\s\S]+?)(?=\})\}/g;
+	var unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
+
+	function unrollLoops(string) {
+		return string.replace(unrollLoopPattern, loopReplacer).replace(deprecatedUnrollLoopPattern, deprecatedLoopReplacer);
+	}
+
+	function deprecatedLoopReplacer(match, start, end, snippet) {
+		console.warn('WebGLProgram: #pragma unroll_loop shader syntax is deprecated. Please use #pragma unroll_loop_start syntax instead.');
+		return loopReplacer(match, start, end, snippet);
+	}
+
+	function loopReplacer(match, start, end, snippet) {
+		var string = '';
+
+		for (var i = parseInt(start); i < parseInt(end); i++) {
+			string += snippet.replace(/\[\s*i\s*\]/g, '[ ' + i + ' ]').replace(/UNROLLED_LOOP_INDEX/g, i);
+		}
+
+		return string;
+	} //
+
+
+	function generatePrecision(parameters) {
+		var precisionstring = 'precision ' + parameters.precision + ' float;\nprecision ' + parameters.precision + ' int;';
+
+		if (parameters.precision === 'highp') {
+			precisionstring += '\n#define HIGH_PRECISION';
+		} else if (parameters.precision === 'mediump') {
+			precisionstring += '\n#define MEDIUM_PRECISION';
+		} else if (parameters.precision === 'lowp') {
+			precisionstring += '\n#define LOW_PRECISION';
+		}
+
+		return precisionstring;
+	}
+
+	function generateShadowMapTypeDefine(parameters) {
+		var shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';
+
+		if (parameters.shadowMapType === PCFShadowMap) {
+			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
+		} else if (parameters.shadowMapType === PCFSoftShadowMap) {
+			shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
+		} else if (parameters.shadowMapType === VSMShadowMap) {
+			shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';
+		}
+
+		return shadowMapTypeDefine;
+	}
+
+	function generateEnvMapTypeDefine(parameters) {
+		var envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
+
+		if (parameters.envMap) {
+			switch (parameters.envMapMode) {
+				case CubeReflectionMapping:
+				case CubeRefractionMapping:
+					envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
+					break;
+
+				case CubeUVReflectionMapping:
+				case CubeUVRefractionMapping:
+					envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
+					break;
+			}
+		}
+
+		return envMapTypeDefine;
+	}
+
+	function generateEnvMapModeDefine(parameters) {
+		var envMapModeDefine = 'ENVMAP_MODE_REFLECTION';
+
+		if (parameters.envMap) {
+			switch (parameters.envMapMode) {
+				case CubeRefractionMapping:
+				case CubeUVRefractionMapping:
+					envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
+					break;
+			}
+		}
+
+		return envMapModeDefine;
+	}
+
+	function generateEnvMapBlendingDefine(parameters) {
+		var envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';
+
+		if (parameters.envMap) {
+			switch (parameters.combine) {
+				case MultiplyOperation:
+					envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
+					break;
+
+				case MixOperation:
+					envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
+					break;
+
+				case AddOperation:
+					envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
+					break;
+			}
+		}
+
+		return envMapBlendingDefine;
+	}
+
+	function WebGLProgram(renderer, cacheKey, parameters, bindingStates) {
+		var gl = renderer.getContext();
+		var defines = parameters.defines;
+		var vertexShader = parameters.vertexShader;
+		var fragmentShader = parameters.fragmentShader;
+		var shadowMapTypeDefine = generateShadowMapTypeDefine(parameters);
+		var envMapTypeDefine = generateEnvMapTypeDefine(parameters);
+		var envMapModeDefine = generateEnvMapModeDefine(parameters);
+		var envMapBlendingDefine = generateEnvMapBlendingDefine(parameters);
+		var gammaFactorDefine = renderer.gammaFactor > 0 ? renderer.gammaFactor : 1.0;
+		var customExtensions = parameters.isWebGL2 ? '' : generateExtensions(parameters);
+		var customDefines = generateDefines(defines);
+		var program = gl.createProgram();
+		var prefixVertex, prefixFragment;
+		var versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';
+
+		if (parameters.isRawShaderMaterial) {
+			prefixVertex = [customDefines].filter(filterEmptyLine).join('\n');
+
+			if (prefixVertex.length > 0) {
+				prefixVertex += '\n';
+			}
+
+			prefixFragment = [customExtensions, customDefines].filter(filterEmptyLine).join('\n');
+
+			if (prefixFragment.length > 0) {
+				prefixFragment += '\n';
+			}
+		} else {
+			prefixVertex = [generatePrecision(parameters), '#define SHADER_NAME ' + parameters.shaderName, customDefines, parameters.instancing ? '#define USE_INSTANCING' : '', parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '', parameters.supportsVertexTextures ? '#define VERTEX_TEXTURES' : '', '#define GAMMA_FACTOR ' + gammaFactorDefine, '#define MAX_BONES ' + parameters.maxBones, parameters.useFog && parameters.fog ? '#define USE_FOG' : '', parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '', parameters.map ? '#define USE_MAP' : '', parameters.envMap ? '#define USE_ENVMAP' : '', parameters.envMap ? '#define ' + envMapModeDefine : '', parameters.lightMap ? '#define USE_LIGHTMAP' : '', parameters.aoMap ? '#define USE_AOMAP' : '', parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '', parameters.bumpMap ? '#define USE_BUMPMAP' : '', parameters.normalMap ? '#define USE_NORMALMAP' : '', parameters.normalMap && parameters.objectSpaceNormalMap ? '#define OBJECTSPACE_NORMALMAP' : '', parameters.normalMap && parameters.tangentSpaceNormalMap ? '#define TANGENTSPACE_NORMALMAP' : '', parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '', parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '', parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '', parameters.displacementMap && parameters.supportsVertexTextures ? '#define USE_DISPLACEMENTMAP' : '', parameters.specularMap ? '#define USE_SPECULARMAP' : '', parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '', parameters.metalnessMap ? '#define USE_METALNESSMAP' : '', parameters.alphaMap ? '#define USE_ALPHAMAP' : '', parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '', parameters.vertexTangents ? '#define USE_TANGENT' : '', parameters.vertexColors ? '#define USE_COLOR' : '', parameters.vertexUvs ? '#define USE_UV' : '', parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '', parameters.flatShading ? '#define FLAT_SHADED' : '', parameters.skinning ? '#define USE_SKINNING' : '', parameters.useVertexTexture ? '#define BONE_TEXTURE' : '', parameters.morphTargets ? '#define USE_MORPHTARGETS' : '', parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '', parameters.doubleSided ? '#define DOUBLE_SIDED' : '', parameters.flipSided ? '#define FLIP_SIDED' : '', parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '', parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '', parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '', parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '', parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? '#define USE_LOGDEPTHBUF_EXT' : '', 'uniform mat4 modelMatrix;', 'uniform mat4 modelViewMatrix;', 'uniform mat4 projectionMatrix;', 'uniform mat4 viewMatrix;', 'uniform mat3 normalMatrix;', 'uniform vec3 cameraPosition;', 'uniform bool isOrthographic;', '#ifdef USE_INSTANCING', '	attribute mat4 instanceMatrix;', '#endif', '#ifdef USE_INSTANCING_COLOR', '	attribute vec3 instanceColor;', '#endif', 'attribute vec3 position;', 'attribute vec3 normal;', 'attribute vec2 uv;', '#ifdef USE_TANGENT', '	attribute vec4 tangent;', '#endif', '#ifdef USE_COLOR', '	attribute vec3 color;', '#endif', '#ifdef USE_MORPHTARGETS', '	attribute vec3 morphTarget0;', '	attribute vec3 morphTarget1;', '	attribute vec3 morphTarget2;', '	attribute vec3 morphTarget3;', '	#ifdef USE_MORPHNORMALS', '		attribute vec3 morphNormal0;', '		attribute vec3 morphNormal1;', '		attribute vec3 morphNormal2;', '		attribute vec3 morphNormal3;', '	#else', '		attribute vec3 morphTarget4;', '		attribute vec3 morphTarget5;', '		attribute vec3 morphTarget6;', '		attribute vec3 morphTarget7;', '	#endif', '#endif', '#ifdef USE_SKINNING', '	attribute vec4 skinIndex;', '	attribute vec4 skinWeight;', '#endif', '\n'].filter(filterEmptyLine).join('\n');
+			prefixFragment = [customExtensions, generatePrecision(parameters), '#define SHADER_NAME ' + parameters.shaderName, customDefines, parameters.alphaTest ? '#define ALPHATEST ' + parameters.alphaTest + (parameters.alphaTest % 1 ? '' : '.0') : '', // add '.0' if integer
+			'#define GAMMA_FACTOR ' + gammaFactorDefine, parameters.useFog && parameters.fog ? '#define USE_FOG' : '', parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '', parameters.map ? '#define USE_MAP' : '', parameters.matcap ? '#define USE_MATCAP' : '', parameters.envMap ? '#define USE_ENVMAP' : '', parameters.envMap ? '#define ' + envMapTypeDefine : '', parameters.envMap ? '#define ' + envMapModeDefine : '', parameters.envMap ? '#define ' + envMapBlendingDefine : '', parameters.lightMap ? '#define USE_LIGHTMAP' : '', parameters.aoMap ? '#define USE_AOMAP' : '', parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '', parameters.bumpMap ? '#define USE_BUMPMAP' : '', parameters.normalMap ? '#define USE_NORMALMAP' : '', parameters.normalMap && parameters.objectSpaceNormalMap ? '#define OBJECTSPACE_NORMALMAP' : '', parameters.normalMap && parameters.tangentSpaceNormalMap ? '#define TANGENTSPACE_NORMALMAP' : '', parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '', parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '', parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '', parameters.specularMap ? '#define USE_SPECULARMAP' : '', parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '', parameters.metalnessMap ? '#define USE_METALNESSMAP' : '', parameters.alphaMap ? '#define USE_ALPHAMAP' : '', parameters.sheen ? '#define USE_SHEEN' : '', parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '', parameters.vertexTangents ? '#define USE_TANGENT' : '', parameters.vertexColors || parameters.instancingColor ? '#define USE_COLOR' : '', parameters.vertexUvs ? '#define USE_UV' : '', parameters.uvsVertexOnly ? '#define UVS_VERTEX_ONLY' : '', parameters.gradientMap ? '#define USE_GRADIENTMAP' : '', parameters.flatShading ? '#define FLAT_SHADED' : '', parameters.doubleSided ? '#define DOUBLE_SIDED' : '', parameters.flipSided ? '#define FLIP_SIDED' : '', parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '', parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '', parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '', parameters.physicallyCorrectLights ? '#define PHYSICALLY_CORRECT_LIGHTS' : '', parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '', parameters.logarithmicDepthBuffer && parameters.rendererExtensionFragDepth ? '#define USE_LOGDEPTHBUF_EXT' : '', (parameters.extensionShaderTextureLOD || parameters.envMap) && parameters.rendererExtensionShaderTextureLod ? '#define TEXTURE_LOD_EXT' : '', 'uniform mat4 viewMatrix;', 'uniform vec3 cameraPosition;', 'uniform bool isOrthographic;', parameters.toneMapping !== NoToneMapping ? '#define TONE_MAPPING' : '', parameters.toneMapping !== NoToneMapping ? ShaderChunk['tonemapping_pars_fragment'] : '', // this code is required here because it is used by the toneMapping() function defined below
+			parameters.toneMapping !== NoToneMapping ? getToneMappingFunction('toneMapping', parameters.toneMapping) : '', parameters.dithering ? '#define DITHERING' : '', ShaderChunk['encodings_pars_fragment'], // this code is required here because it is used by the various encoding/decoding function defined below
+			parameters.map ? getTexelDecodingFunction('mapTexelToLinear', parameters.mapEncoding) : '', parameters.matcap ? getTexelDecodingFunction('matcapTexelToLinear', parameters.matcapEncoding) : '', parameters.envMap ? getTexelDecodingFunction('envMapTexelToLinear', parameters.envMapEncoding) : '', parameters.emissiveMap ? getTexelDecodingFunction('emissiveMapTexelToLinear', parameters.emissiveMapEncoding) : '', parameters.lightMap ? getTexelDecodingFunction('lightMapTexelToLinear', parameters.lightMapEncoding) : '', getTexelEncodingFunction('linearToOutputTexel', parameters.outputEncoding), parameters.depthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '', '\n'].filter(filterEmptyLine).join('\n');
+		}
+
+		vertexShader = resolveIncludes(vertexShader);
+		vertexShader = replaceLightNums(vertexShader, parameters);
+		vertexShader = replaceClippingPlaneNums(vertexShader, parameters);
+		fragmentShader = resolveIncludes(fragmentShader);
+		fragmentShader = replaceLightNums(fragmentShader, parameters);
+		fragmentShader = replaceClippingPlaneNums(fragmentShader, parameters);
+		vertexShader = unrollLoops(vertexShader);
+		fragmentShader = unrollLoops(fragmentShader);
+
+		if (parameters.isWebGL2 && parameters.isRawShaderMaterial !== true) {
+			// GLSL 3.0 conversion for built-in materials and ShaderMaterial
+			versionString = '#version 300 es\n';
+			prefixVertex = ['#define attribute in', '#define varying out', '#define texture2D texture'].join('\n') + '\n' + prefixVertex;
+			prefixFragment = ['#define varying in', parameters.glslVersion === GLSL3 ? '' : 'out highp vec4 pc_fragColor;', parameters.glslVersion === GLSL3 ? '' : '#define gl_FragColor pc_fragColor', '#define gl_FragDepthEXT gl_FragDepth', '#define texture2D texture', '#define textureCube texture', '#define texture2DProj textureProj', '#define texture2DLodEXT textureLod', '#define texture2DProjLodEXT textureProjLod', '#define textureCubeLodEXT textureLod', '#define texture2DGradEXT textureGrad', '#define texture2DProjGradEXT textureProjGrad', '#define textureCubeGradEXT textureGrad'].join('\n') + '\n' + prefixFragment;
+		}
+
+		var vertexGlsl = versionString + prefixVertex + vertexShader;
+		var fragmentGlsl = versionString + prefixFragment + fragmentShader; // console.log( '*VERTEX*', vertexGlsl );
+		// console.log( '*FRAGMENT*', fragmentGlsl );
+
+		var glVertexShader = WebGLShader(gl, 35633, vertexGlsl);
+		var glFragmentShader = WebGLShader(gl, 35632, fragmentGlsl);
+		gl.attachShader(program, glVertexShader);
+		gl.attachShader(program, glFragmentShader); // Force a particular attribute to index 0.
+
+		if (parameters.index0AttributeName !== undefined) {
+			gl.bindAttribLocation(program, 0, parameters.index0AttributeName);
+		} else if (parameters.morphTargets === true) {
+			// programs with morphTargets displace position out of attribute 0
+			gl.bindAttribLocation(program, 0, 'position');
+		}
+
+		gl.linkProgram(program); // check for link errors
+
+		if (renderer.debug.checkShaderErrors) {
+			var programLog = gl.getProgramInfoLog(program).trim();
+			var vertexLog = gl.getShaderInfoLog(glVertexShader).trim();
+			var fragmentLog = gl.getShaderInfoLog(glFragmentShader).trim();
+			var runnable = true;
+			var haveDiagnostics = true;
+
+			if (gl.getProgramParameter(program, 35714) === false) {
+				runnable = false;
+				var vertexErrors = getShaderErrors(gl, glVertexShader, 'vertex');
+				var fragmentErrors = getShaderErrors(gl, glFragmentShader, 'fragment');
+				console.error('THREE.WebGLProgram: shader error: ', gl.getError(), '35715', gl.getProgramParameter(program, 35715), 'gl.getProgramInfoLog', programLog, vertexErrors, fragmentErrors);
+			} else if (programLog !== '') {
+				console.warn('THREE.WebGLProgram: gl.getProgramInfoLog()', programLog);
+			} else if (vertexLog === '' || fragmentLog === '') {
+				haveDiagnostics = false;
+			}
+
+			if (haveDiagnostics) {
+				this.diagnostics = {
+					runnable: runnable,
+					programLog: programLog,
+					vertexShader: {
+						log: vertexLog,
+						prefix: prefixVertex
+					},
+					fragmentShader: {
+						log: fragmentLog,
+						prefix: prefixFragment
+					}
+				};
+			}
+		} // Clean up
+		// Crashes in iOS9 and iOS10. #18402
+		// gl.detachShader( program, glVertexShader );
+		// gl.detachShader( program, glFragmentShader );
+
+
+		gl.deleteShader(glVertexShader);
+		gl.deleteShader(glFragmentShader); // set up caching for uniform locations
+
+		var cachedUniforms;
+
+		this.getUniforms = function () {
+			if (cachedUniforms === undefined) {
+				cachedUniforms = new WebGLUniforms(gl, program);
+			}
+
+			return cachedUniforms;
+		}; // set up caching for attribute locations
+
+
+		var cachedAttributes;
+
+		this.getAttributes = function () {
+			if (cachedAttributes === undefined) {
+				cachedAttributes = fetchAttributeLocations(gl, program);
+			}
+
+			return cachedAttributes;
+		}; // free resource
+
+
+		this.destroy = function () {
+			bindingStates.releaseStatesOfProgram(this);
+			gl.deleteProgram(program);
+			this.program = undefined;
+		}; //
+
+
+		this.name = parameters.shaderName;
+		this.id = programIdCount++;
+		this.cacheKey = cacheKey;
+		this.usedTimes = 1;
+		this.program = program;
+		this.vertexShader = glVertexShader;
+		this.fragmentShader = glFragmentShader;
+		return this;
+	}
+
+	function WebGLPrograms(renderer, cubemaps, extensions, capabilities, bindingStates, clipping) {
+		var programs = [];
+		var isWebGL2 = capabilities.isWebGL2;
+		var logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
+		var floatVertexTextures = capabilities.floatVertexTextures;
+		var maxVertexUniforms = capabilities.maxVertexUniforms;
+		var vertexTextures = capabilities.vertexTextures;
+		var precision = capabilities.precision;
+		var shaderIDs = {
+			MeshDepthMaterial: 'depth',
+			MeshDistanceMaterial: 'distanceRGBA',
+			MeshNormalMaterial: 'normal',
+			MeshBasicMaterial: 'basic',
+			MeshLambertMaterial: 'lambert',
+			MeshPhongMaterial: 'phong',
+			MeshToonMaterial: 'toon',
+			MeshStandardMaterial: 'physical',
+			MeshPhysicalMaterial: 'physical',
+			MeshMatcapMaterial: 'matcap',
+			LineBasicMaterial: 'basic',
+			LineDashedMaterial: 'dashed',
+			PointsMaterial: 'points',
+			ShadowMaterial: 'shadow',
+			SpriteMaterial: 'sprite'
+		};
+		var parameterNames = ['precision', 'isWebGL2', 'supportsVertexTextures', 'outputEncoding', 'instancing', 'instancingColor', 'map', 'mapEncoding', 'matcap', 'matcapEncoding', 'envMap', 'envMapMode', 'envMapEncoding', 'envMapCubeUV', 'lightMap', 'lightMapEncoding', 'aoMap', 'emissiveMap', 'emissiveMapEncoding', 'bumpMap', 'normalMap', 'objectSpaceNormalMap', 'tangentSpaceNormalMap', 'clearcoatMap', 'clearcoatRoughnessMap', 'clearcoatNormalMap', 'displacementMap', 'specularMap', 'roughnessMap', 'metalnessMap', 'gradientMap', 'alphaMap', 'combine', 'vertexColors', 'vertexTangents', 'vertexUvs', 'uvsVertexOnly', 'fog', 'useFog', 'fogExp2', 'flatShading', 'sizeAttenuation', 'logarithmicDepthBuffer', 'skinning', 'maxBones', 'useVertexTexture', 'morphTargets', 'morphNormals', 'maxMorphTargets', 'maxMorphNormals', 'premultipliedAlpha', 'numDirLights', 'numPointLights', 'numSpotLights', 'numHemiLights', 'numRectAreaLights', 'numDirLightShadows', 'numPointLightShadows', 'numSpotLightShadows', 'shadowMapEnabled', 'shadowMapType', 'toneMapping', 'physicallyCorrectLights', 'alphaTest', 'doubleSided', 'flipSided', 'numClippingPlanes', 'numClipIntersection', 'depthPacking', 'dithering', 'sheen', 'transmissionMap'];
+
+		function getMaxBones(object) {
+			var skeleton = object.skeleton;
+			var bones = skeleton.bones;
+
+			if (floatVertexTextures) {
+				return 1024;
+			} else {
+				// default for when object is not specified
+				// ( for example when prebuilding shader to be used with multiple objects )
+				//
+				//	- leave some extra space for other uniforms
+				//	- limit here is ANGLE's 254 max uniform vectors
+				//		(up to 54 should be safe)
+				var nVertexUniforms = maxVertexUniforms;
+				var nVertexMatrices = Math.floor((nVertexUniforms - 20) / 4);
+				var maxBones = Math.min(nVertexMatrices, bones.length);
+
+				if (maxBones < bones.length) {
+					console.warn('THREE.WebGLRenderer: Skeleton has ' + bones.length + ' bones. This GPU supports ' + maxBones + '.');
+					return 0;
+				}
+
+				return maxBones;
+			}
+		}
+
+		function getTextureEncodingFromMap(map) {
+			var encoding;
+
+			if (map && map.isTexture) {
+				encoding = map.encoding;
+			} else if (map && map.isWebGLRenderTarget) {
+				console.warn('THREE.WebGLPrograms.getTextureEncodingFromMap: don\'t use render targets as textures. Use their .texture property instead.');
+				encoding = map.texture.encoding;
+			} else {
+				encoding = LinearEncoding;
+			}
+
+			return encoding;
+		}
+
+		function getParameters(material, lights, shadows, scene, object) {
+			var fog = scene.fog;
+			var environment = material.isMeshStandardMaterial ? scene.environment : null;
+			var envMap = cubemaps.get(material.envMap || environment);
+			var shaderID = shaderIDs[material.type]; // heuristics to create shader parameters according to lights in the scene
+			// (not to blow over maxLights budget)
+
+			var maxBones = object.isSkinnedMesh ? getMaxBones(object) : 0;
+
+			if (material.precision !== null) {
+				precision = capabilities.getMaxPrecision(material.precision);
+
+				if (precision !== material.precision) {
+					console.warn('THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.');
+				}
+			}
+
+			var vertexShader, fragmentShader;
+
+			if (shaderID) {
+				var shader = ShaderLib[shaderID];
+				vertexShader = shader.vertexShader;
+				fragmentShader = shader.fragmentShader;
+			} else {
+				vertexShader = material.vertexShader;
+				fragmentShader = material.fragmentShader;
+			}
+
+			var currentRenderTarget = renderer.getRenderTarget();
+			var parameters = {
+				isWebGL2: isWebGL2,
+				shaderID: shaderID,
+				shaderName: material.type,
+				vertexShader: vertexShader,
+				fragmentShader: fragmentShader,
+				defines: material.defines,
+				isRawShaderMaterial: material.isRawShaderMaterial === true,
+				glslVersion: material.glslVersion,
+				precision: precision,
+				instancing: object.isInstancedMesh === true,
+				instancingColor: object.isInstancedMesh === true && object.instanceColor !== null,
+				supportsVertexTextures: vertexTextures,
+				outputEncoding: currentRenderTarget !== null ? getTextureEncodingFromMap(currentRenderTarget.texture) : renderer.outputEncoding,
+				map: !!material.map,
+				mapEncoding: getTextureEncodingFromMap(material.map),
+				matcap: !!material.matcap,
+				matcapEncoding: getTextureEncodingFromMap(material.matcap),
+				envMap: !!envMap,
+				envMapMode: envMap && envMap.mapping,
+				envMapEncoding: getTextureEncodingFromMap(envMap),
+				envMapCubeUV: !!envMap && (envMap.mapping === CubeUVReflectionMapping || envMap.mapping === CubeUVRefractionMapping),
+				lightMap: !!material.lightMap,
+				lightMapEncoding: getTextureEncodingFromMap(material.lightMap),
+				aoMap: !!material.aoMap,
+				emissiveMap: !!material.emissiveMap,
+				emissiveMapEncoding: getTextureEncodingFromMap(material.emissiveMap),
+				bumpMap: !!material.bumpMap,
+				normalMap: !!material.normalMap,
+				objectSpaceNormalMap: material.normalMapType === ObjectSpaceNormalMap,
+				tangentSpaceNormalMap: material.normalMapType === TangentSpaceNormalMap,
+				clearcoatMap: !!material.clearcoatMap,
+				clearcoatRoughnessMap: !!material.clearcoatRoughnessMap,
+				clearcoatNormalMap: !!material.clearcoatNormalMap,
+				displacementMap: !!material.displacementMap,
+				roughnessMap: !!material.roughnessMap,
+				metalnessMap: !!material.metalnessMap,
+				specularMap: !!material.specularMap,
+				alphaMap: !!material.alphaMap,
+				gradientMap: !!material.gradientMap,
+				sheen: !!material.sheen,
+				transmissionMap: !!material.transmissionMap,
+				combine: material.combine,
+				vertexTangents: material.normalMap && material.vertexTangents,
+				vertexColors: material.vertexColors,
+				vertexUvs: !!material.map || !!material.bumpMap || !!material.normalMap || !!material.specularMap || !!material.alphaMap || !!material.emissiveMap || !!material.roughnessMap || !!material.metalnessMap || !!material.clearcoatMap || !!material.clearcoatRoughnessMap || !!material.clearcoatNormalMap || !!material.displacementMap || !!material.transmissionMap,
+				uvsVertexOnly: !(!!material.map || !!material.bumpMap || !!material.normalMap || !!material.specularMap || !!material.alphaMap || !!material.emissiveMap || !!material.roughnessMap || !!material.metalnessMap || !!material.clearcoatNormalMap || !!material.transmissionMap) && !!material.displacementMap,
+				fog: !!fog,
+				useFog: material.fog,
+				fogExp2: fog && fog.isFogExp2,
+				flatShading: !!material.flatShading,
+				sizeAttenuation: material.sizeAttenuation,
+				logarithmicDepthBuffer: logarithmicDepthBuffer,
+				skinning: material.skinning && maxBones > 0,
+				maxBones: maxBones,
+				useVertexTexture: floatVertexTextures,
+				morphTargets: material.morphTargets,
+				morphNormals: material.morphNormals,
+				maxMorphTargets: renderer.maxMorphTargets,
+				maxMorphNormals: renderer.maxMorphNormals,
+				numDirLights: lights.directional.length,
+				numPointLights: lights.point.length,
+				numSpotLights: lights.spot.length,
+				numRectAreaLights: lights.rectArea.length,
+				numHemiLights: lights.hemi.length,
+				numDirLightShadows: lights.directionalShadowMap.length,
+				numPointLightShadows: lights.pointShadowMap.length,
+				numSpotLightShadows: lights.spotShadowMap.length,
+				numClippingPlanes: clipping.numPlanes,
+				numClipIntersection: clipping.numIntersection,
+				dithering: material.dithering,
+				shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
+				shadowMapType: renderer.shadowMap.type,
+				toneMapping: material.toneMapped ? renderer.toneMapping : NoToneMapping,
+				physicallyCorrectLights: renderer.physicallyCorrectLights,
+				premultipliedAlpha: material.premultipliedAlpha,
+				alphaTest: material.alphaTest,
+				doubleSided: material.side === DoubleSide,
+				flipSided: material.side === BackSide,
+				depthPacking: material.depthPacking !== undefined ? material.depthPacking : false,
+				index0AttributeName: material.index0AttributeName,
+				extensionDerivatives: material.extensions && material.extensions.derivatives,
+				extensionFragDepth: material.extensions && material.extensions.fragDepth,
+				extensionDrawBuffers: material.extensions && material.extensions.drawBuffers,
+				extensionShaderTextureLOD: material.extensions && material.extensions.shaderTextureLOD,
+				rendererExtensionFragDepth: isWebGL2 || extensions.has('EXT_frag_depth'),
+				rendererExtensionDrawBuffers: isWebGL2 || extensions.has('WEBGL_draw_buffers'),
+				rendererExtensionShaderTextureLod: isWebGL2 || extensions.has('EXT_shader_texture_lod'),
+				customProgramCacheKey: material.customProgramCacheKey()
+			};
+			return parameters;
+		}
+
+		function getProgramCacheKey(parameters) {
+			var array = [];
+
+			if (parameters.shaderID) {
+				array.push(parameters.shaderID);
+			} else {
+				array.push(parameters.fragmentShader);
+				array.push(parameters.vertexShader);
+			}
+
+			if (parameters.defines !== undefined) {
+				for (var name in parameters.defines) {
+					array.push(name);
+					array.push(parameters.defines[name]);
+				}
+			}
+
+			if (parameters.isRawShaderMaterial === false) {
+				for (var i = 0; i < parameterNames.length; i++) {
+					array.push(parameters[parameterNames[i]]);
+				}
+
+				array.push(renderer.outputEncoding);
+				array.push(renderer.gammaFactor);
+			}
+
+			array.push(parameters.customProgramCacheKey);
+			return array.join();
+		}
+
+		function getUniforms(material) {
+			var shaderID = shaderIDs[material.type];
+			var uniforms;
+
+			if (shaderID) {
+				var shader = ShaderLib[shaderID];
+				uniforms = UniformsUtils.clone(shader.uniforms);
+			} else {
+				uniforms = material.uniforms;
+			}
+
+			return uniforms;
+		}
+
+		function acquireProgram(parameters, cacheKey) {
+			var program; // Check if code has been already compiled
+
+			for (var p = 0, pl = programs.length; p < pl; p++) {
+				var preexistingProgram = programs[p];
+
+				if (preexistingProgram.cacheKey === cacheKey) {
+					program = preexistingProgram;
+					++program.usedTimes;
+					break;
+				}
+			}
+
+			if (program === undefined) {
+				program = new WebGLProgram(renderer, cacheKey, parameters, bindingStates);
+				programs.push(program);
+			}
+
+			return program;
+		}
+
+		function releaseProgram(program) {
+			if (--program.usedTimes === 0) {
+				// Remove from unordered set
+				var i = programs.indexOf(program);
+				programs[i] = programs[programs.length - 1];
+				programs.pop(); // Free WebGL resources
+
+				program.destroy();
+			}
+		}
+
+		return {
+			getParameters: getParameters,
+			getProgramCacheKey: getProgramCacheKey,
+			getUniforms: getUniforms,
+			acquireProgram: acquireProgram,
+			releaseProgram: releaseProgram,
+			// Exposed for resource monitoring & error feedback via renderer.info:
+			programs: programs
+		};
+	}
+
+	function WebGLProperties() {
+		var properties = new WeakMap();
+
+		function get(object) {
+			var map = properties.get(object);
+
+			if (map === undefined) {
+				map = {};
+				properties.set(object, map);
+			}
+
+			return map;
+		}
+
+		function remove(object) {
+			properties.delete(object);
+		}
+
+		function update(object, key, value) {
+			properties.get(object)[key] = value;
+		}
+
+		function dispose() {
+			properties = new WeakMap();
+		}
+
+		return {
+			get: get,
+			remove: remove,
+			update: update,
+			dispose: dispose
+		};
+	}
+
+	function painterSortStable(a, b) {
+		if (a.groupOrder !== b.groupOrder) {
+			return a.groupOrder - b.groupOrder;
+		} else if (a.renderOrder !== b.renderOrder) {
+			return a.renderOrder - b.renderOrder;
+		} else if (a.program !== b.program) {
+			return a.program.id - b.program.id;
+		} else if (a.material.id !== b.material.id) {
+			return a.material.id - b.material.id;
+		} else if (a.z !== b.z) {
+			return a.z - b.z;
+		} else {
+			return a.id - b.id;
+		}
+	}
+
+	function reversePainterSortStable(a, b) {
+		if (a.groupOrder !== b.groupOrder) {
+			return a.groupOrder - b.groupOrder;
+		} else if (a.renderOrder !== b.renderOrder) {
+			return a.renderOrder - b.renderOrder;
+		} else if (a.z !== b.z) {
+			return b.z - a.z;
+		} else {
+			return a.id - b.id;
+		}
+	}
+
+	function WebGLRenderList(properties) {
+		var renderItems = [];
+		var renderItemsIndex = 0;
+		var opaque = [];
+		var transparent = [];
+		var defaultProgram = {
+			id: -1
+		};
+
+		function init() {
+			renderItemsIndex = 0;
+			opaque.length = 0;
+			transparent.length = 0;
+		}
+
+		function getNextRenderItem(object, geometry, material, groupOrder, z, group) {
+			var renderItem = renderItems[renderItemsIndex];
+			var materialProperties = properties.get(material);
+
+			if (renderItem === undefined) {
+				renderItem = {
+					id: object.id,
+					object: object,
+					geometry: geometry,
+					material: material,
+					program: materialProperties.program || defaultProgram,
+					groupOrder: groupOrder,
+					renderOrder: object.renderOrder,
+					z: z,
+					group: group
+				};
+				renderItems[renderItemsIndex] = renderItem;
+			} else {
+				renderItem.id = object.id;
+				renderItem.object = object;
+				renderItem.geometry = geometry;
+				renderItem.material = material;
+				renderItem.program = materialProperties.program || defaultProgram;
+				renderItem.groupOrder = groupOrder;
+				renderItem.renderOrder = object.renderOrder;
+				renderItem.z = z;
+				renderItem.group = group;
+			}
+
+			renderItemsIndex++;
+			return renderItem;
+		}
+
+		function push(object, geometry, material, groupOrder, z, group) {
+			var renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);
+			(material.transparent === true ? transparent : opaque).push(renderItem);
+		}
+
+		function unshift(object, geometry, material, groupOrder, z, group) {
+			var renderItem = getNextRenderItem(object, geometry, material, groupOrder, z, group);
+			(material.transparent === true ? transparent : opaque).unshift(renderItem);
+		}
+
+		function sort(customOpaqueSort, customTransparentSort) {
+			if (opaque.length > 1) opaque.sort(customOpaqueSort || painterSortStable);
+			if (transparent.length > 1) transparent.sort(customTransparentSort || reversePainterSortStable);
+		}
+
+		function finish() {
+			// Clear references from inactive renderItems in the list
+			for (var i = renderItemsIndex, il = renderItems.length; i < il; i++) {
+				var renderItem = renderItems[i];
+				if (renderItem.id === null) break;
+				renderItem.id = null;
+				renderItem.object = null;
+				renderItem.geometry = null;
+				renderItem.material = null;
+				renderItem.program = null;
+				renderItem.group = null;
+			}
+		}
+
+		return {
+			opaque: opaque,
+			transparent: transparent,
+			init: init,
+			push: push,
+			unshift: unshift,
+			finish: finish,
+			sort: sort
+		};
+	}
+
+	function WebGLRenderLists(properties) {
+		var lists = new WeakMap();
+
+		function get(scene, renderCallDepth) {
+			var list;
+
+			if (lists.has(scene) === false) {
+				list = new WebGLRenderList(properties);
+				lists.set(scene, [list]);
+			} else {
+				if (renderCallDepth >= lists.get(scene).length) {
+					list = new WebGLRenderList(properties);
+					lists.get(scene).push(list);
+				} else {
+					list = lists.get(scene)[renderCallDepth];
+				}
+			}
+
+			return list;
+		}
+
+		function dispose() {
+			lists = new WeakMap();
+		}
+
+		return {
+			get: get,
+			dispose: dispose
+		};
+	}
+
+	function UniformsCache() {
+		var lights = {};
+		return {
+			get: function get(light) {
+				if (lights[light.id] !== undefined) {
+					return lights[light.id];
+				}
+
+				var uniforms;
+
+				switch (light.type) {
+					case 'DirectionalLight':
+						uniforms = {
+							direction: new Vector3(),
+							color: new Color()
+						};
+						break;
+
+					case 'SpotLight':
+						uniforms = {
+							position: new Vector3(),
+							direction: new Vector3(),
+							color: new Color(),
+							distance: 0,
+							coneCos: 0,
+							penumbraCos: 0,
+							decay: 0
+						};
+						break;
+
+					case 'PointLight':
+						uniforms = {
+							position: new Vector3(),
+							color: new Color(),
+							distance: 0,
+							decay: 0
+						};
+						break;
+
+					case 'HemisphereLight':
+						uniforms = {
+							direction: new Vector3(),
+							skyColor: new Color(),
+							groundColor: new Color()
+						};
+						break;
+
+					case 'RectAreaLight':
+						uniforms = {
+							color: new Color(),
+							position: new Vector3(),
+							halfWidth: new Vector3(),
+							halfHeight: new Vector3()
+						};
+						break;
+				}
+
+				lights[light.id] = uniforms;
+				return uniforms;
+			}
+		};
+	}
+
+	function ShadowUniformsCache() {
+		var lights = {};
+		return {
+			get: function get(light) {
+				if (lights[light.id] !== undefined) {
+					return lights[light.id];
+				}
+
+				var uniforms;
+
+				switch (light.type) {
+					case 'DirectionalLight':
+						uniforms = {
+							shadowBias: 0,
+							shadowNormalBias: 0,
+							shadowRadius: 1,
+							shadowMapSize: new Vector2()
+						};
+						break;
+
+					case 'SpotLight':
+						uniforms = {
+							shadowBias: 0,
+							shadowNormalBias: 0,
+							shadowRadius: 1,
+							shadowMapSize: new Vector2()
+						};
+						break;
+
+					case 'PointLight':
+						uniforms = {
+							shadowBias: 0,
+							shadowNormalBias: 0,
+							shadowRadius: 1,
+							shadowMapSize: new Vector2(),
+							shadowCameraNear: 1,
+							shadowCameraFar: 1000
+						};
+						break;
+					// TODO (abelnation): set RectAreaLight shadow uniforms
+				}
+
+				lights[light.id] = uniforms;
+				return uniforms;
+			}
+		};
+	}
+
+	var nextVersion = 0;
+
+	function shadowCastingLightsFirst(lightA, lightB) {
+		return (lightB.castShadow ? 1 : 0) - (lightA.castShadow ? 1 : 0);
+	}
+
+	function WebGLLights(extensions, capabilities) {
+		var cache = new UniformsCache();
+		var shadowCache = ShadowUniformsCache();
+		var state = {
+			version: 0,
+			hash: {
+				directionalLength: -1,
+				pointLength: -1,
+				spotLength: -1,
+				rectAreaLength: -1,
+				hemiLength: -1,
+				numDirectionalShadows: -1,
+				numPointShadows: -1,
+				numSpotShadows: -1
+			},
+			ambient: [0, 0, 0],
+			probe: [],
+			directional: [],
+			directionalShadow: [],
+			directionalShadowMap: [],
+			directionalShadowMatrix: [],
+			spot: [],
+			spotShadow: [],
+			spotShadowMap: [],
+			spotShadowMatrix: [],
+			rectArea: [],
+			rectAreaLTC1: null,
+			rectAreaLTC2: null,
+			point: [],
+			pointShadow: [],
+			pointShadowMap: [],
+			pointShadowMatrix: [],
+			hemi: []
+		};
+
+		for (var i = 0; i < 9; i++) {
+			state.probe.push(new Vector3());
+		}
+
+		var vector3 = new Vector3();
+		var matrix4 = new Matrix4();
+		var matrix42 = new Matrix4();
+
+		function setup(lights) {
+			var r = 0,
+					g = 0,
+					b = 0;
+
+			for (var _i = 0; _i < 9; _i++) {
+				state.probe[_i].set(0, 0, 0);
+			}
+
+			var directionalLength = 0;
+			var pointLength = 0;
+			var spotLength = 0;
+			var rectAreaLength = 0;
+			var hemiLength = 0;
+			var numDirectionalShadows = 0;
+			var numPointShadows = 0;
+			var numSpotShadows = 0;
+			lights.sort(shadowCastingLightsFirst);
+
+			for (var _i2 = 0, l = lights.length; _i2 < l; _i2++) {
+				var light = lights[_i2];
+				var color = light.color;
+				var intensity = light.intensity;
+				var distance = light.distance;
+				var shadowMap = light.shadow && light.shadow.map ? light.shadow.map.texture : null;
+
+				if (light.isAmbientLight) {
+					r += color.r * intensity;
+					g += color.g * intensity;
+					b += color.b * intensity;
+				} else if (light.isLightProbe) {
+					for (var j = 0; j < 9; j++) {
+						state.probe[j].addScaledVector(light.sh.coefficients[j], intensity);
+					}
+				} else if (light.isDirectionalLight) {
+					var uniforms = cache.get(light);
+					uniforms.color.copy(light.color).multiplyScalar(light.intensity);
+
+					if (light.castShadow) {
+						var shadow = light.shadow;
+						var shadowUniforms = shadowCache.get(light);
+						shadowUniforms.shadowBias = shadow.bias;
+						shadowUniforms.shadowNormalBias = shadow.normalBias;
+						shadowUniforms.shadowRadius = shadow.radius;
+						shadowUniforms.shadowMapSize = shadow.mapSize;
+						state.directionalShadow[directionalLength] = shadowUniforms;
+						state.directionalShadowMap[directionalLength] = shadowMap;
+						state.directionalShadowMatrix[directionalLength] = light.shadow.matrix;
+						numDirectionalShadows++;
+					}
+
+					state.directional[directionalLength] = uniforms;
+					directionalLength++;
+				} else if (light.isSpotLight) {
+					var _uniforms = cache.get(light);
+
+					_uniforms.position.setFromMatrixPosition(light.matrixWorld);
+
+					_uniforms.color.copy(color).multiplyScalar(intensity);
+
+					_uniforms.distance = distance;
+					_uniforms.coneCos = Math.cos(light.angle);
+					_uniforms.penumbraCos = Math.cos(light.angle * (1 - light.penumbra));
+					_uniforms.decay = light.decay;
+
+					if (light.castShadow) {
+						var _shadow = light.shadow;
+
+						var _shadowUniforms = shadowCache.get(light);
+
+						_shadowUniforms.shadowBias = _shadow.bias;
+						_shadowUniforms.shadowNormalBias = _shadow.normalBias;
+						_shadowUniforms.shadowRadius = _shadow.radius;
+						_shadowUniforms.shadowMapSize = _shadow.mapSize;
+						state.spotShadow[spotLength] = _shadowUniforms;
+						state.spotShadowMap[spotLength] = shadowMap;
+						state.spotShadowMatrix[spotLength] = light.shadow.matrix;
+						numSpotShadows++;
+					}
+
+					state.spot[spotLength] = _uniforms;
+					spotLength++;
+				} else if (light.isRectAreaLight) {
+					var _uniforms2 = cache.get(light); // (a) intensity is the total visible light emitted
+					//uniforms.color.copy( color ).multiplyScalar( intensity / ( light.width * light.height * Math.PI ) );
+					// (b) intensity is the brightness of the light
+
+
+					_uniforms2.color.copy(color).multiplyScalar(intensity);
+
+					_uniforms2.halfWidth.set(light.width * 0.5, 0.0, 0.0);
+
+					_uniforms2.halfHeight.set(0.0, light.height * 0.5, 0.0);
+
+					state.rectArea[rectAreaLength] = _uniforms2;
+					rectAreaLength++;
+				} else if (light.isPointLight) {
+					var _uniforms3 = cache.get(light);
+
+					_uniforms3.color.copy(light.color).multiplyScalar(light.intensity);
+
+					_uniforms3.distance = light.distance;
+					_uniforms3.decay = light.decay;
+
+					if (light.castShadow) {
+						var _shadow2 = light.shadow;
+
+						var _shadowUniforms2 = shadowCache.get(light);
+
+						_shadowUniforms2.shadowBias = _shadow2.bias;
+						_shadowUniforms2.shadowNormalBias = _shadow2.normalBias;
+						_shadowUniforms2.shadowRadius = _shadow2.radius;
+						_shadowUniforms2.shadowMapSize = _shadow2.mapSize;
+						_shadowUniforms2.shadowCameraNear = _shadow2.camera.near;
+						_shadowUniforms2.shadowCameraFar = _shadow2.camera.far;
+						state.pointShadow[pointLength] = _shadowUniforms2;
+						state.pointShadowMap[pointLength] = shadowMap;
+						state.pointShadowMatrix[pointLength] = light.shadow.matrix;
+						numPointShadows++;
+					}
+
+					state.point[pointLength] = _uniforms3;
+					pointLength++;
+				} else if (light.isHemisphereLight) {
+					var _uniforms4 = cache.get(light);
+
+					_uniforms4.skyColor.copy(light.color).multiplyScalar(intensity);
+
+					_uniforms4.groundColor.copy(light.groundColor).multiplyScalar(intensity);
+
+					state.hemi[hemiLength] = _uniforms4;
+					hemiLength++;
+				}
+			}
+
+			if (rectAreaLength > 0) {
+				if (capabilities.isWebGL2) {
+					// WebGL 2
+					state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
+					state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
+				} else {
+					// WebGL 1
+					if (extensions.has('OES_texture_float_linear') === true) {
+						state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
+						state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
+					} else if (extensions.has('OES_texture_half_float_linear') === true) {
+						state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
+						state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;
+					} else {
+						console.error('THREE.WebGLRenderer: Unable to use RectAreaLight. Missing WebGL extensions.');
+					}
+				}
+			}
+
+			state.ambient[0] = r;
+			state.ambient[1] = g;
+			state.ambient[2] = b;
+			var hash = state.hash;
+
+			if (hash.directionalLength !== directionalLength || hash.pointLength !== pointLength || hash.spotLength !== spotLength || hash.rectAreaLength !== rectAreaLength || hash.hemiLength !== hemiLength || hash.numDirectionalShadows !== numDirectionalShadows || hash.numPointShadows !== numPointShadows || hash.numSpotShadows !== numSpotShadows) {
+				state.directional.length = directionalLength;
+				state.spot.length = spotLength;
+				state.rectArea.length = rectAreaLength;
+				state.point.length = pointLength;
+				state.hemi.length = hemiLength;
+				state.directionalShadow.length = numDirectionalShadows;
+				state.directionalShadowMap.length = numDirectionalShadows;
+				state.pointShadow.length = numPointShadows;
+				state.pointShadowMap.length = numPointShadows;
+				state.spotShadow.length = numSpotShadows;
+				state.spotShadowMap.length = numSpotShadows;
+				state.directionalShadowMatrix.length = numDirectionalShadows;
+				state.pointShadowMatrix.length = numPointShadows;
+				state.spotShadowMatrix.length = numSpotShadows;
+				hash.directionalLength = directionalLength;
+				hash.pointLength = pointLength;
+				hash.spotLength = spotLength;
+				hash.rectAreaLength = rectAreaLength;
+				hash.hemiLength = hemiLength;
+				hash.numDirectionalShadows = numDirectionalShadows;
+				hash.numPointShadows = numPointShadows;
+				hash.numSpotShadows = numSpotShadows;
+				state.version = nextVersion++;
+			}
+		}
+
+		function setupView(lights, camera) {
+			var directionalLength = 0;
+			var pointLength = 0;
+			var spotLength = 0;
+			var rectAreaLength = 0;
+			var hemiLength = 0;
+			var viewMatrix = camera.matrixWorldInverse;
+
+			for (var _i3 = 0, l = lights.length; _i3 < l; _i3++) {
+				var light = lights[_i3];
+
+				if (light.isDirectionalLight) {
+					var uniforms = state.directional[directionalLength];
+					uniforms.direction.setFromMatrixPosition(light.matrixWorld);
+					vector3.setFromMatrixPosition(light.target.matrixWorld);
+					uniforms.direction.sub(vector3);
+					uniforms.direction.transformDirection(viewMatrix);
+					directionalLength++;
+				} else if (light.isSpotLight) {
+					var _uniforms5 = state.spot[spotLength];
+
+					_uniforms5.position.setFromMatrixPosition(light.matrixWorld);
+
+					_uniforms5.position.applyMatrix4(viewMatrix);
+
+					_uniforms5.direction.setFromMatrixPosition(light.matrixWorld);
+
+					vector3.setFromMatrixPosition(light.target.matrixWorld);
+
+					_uniforms5.direction.sub(vector3);
+
+					_uniforms5.direction.transformDirection(viewMatrix);
+
+					spotLength++;
+				} else if (light.isRectAreaLight) {
+					var _uniforms6 = state.rectArea[rectAreaLength];
+
+					_uniforms6.position.setFromMatrixPosition(light.matrixWorld);
+
+					_uniforms6.position.applyMatrix4(viewMatrix); // extract local rotation of light to derive width/height half vectors
+
+
+					matrix42.identity();
+					matrix4.copy(light.matrixWorld);
+					matrix4.premultiply(viewMatrix);
+					matrix42.extractRotation(matrix4);
+
+					_uniforms6.halfWidth.set(light.width * 0.5, 0.0, 0.0);
+
+					_uniforms6.halfHeight.set(0.0, light.height * 0.5, 0.0);
+
+					_uniforms6.halfWidth.applyMatrix4(matrix42);
+
+					_uniforms6.halfHeight.applyMatrix4(matrix42);
+
+					rectAreaLength++;
+				} else if (light.isPointLight) {
+					var _uniforms7 = state.point[pointLength];
+
+					_uniforms7.position.setFromMatrixPosition(light.matrixWorld);
+
+					_uniforms7.position.applyMatrix4(viewMatrix);
+
+					pointLength++;
+				} else if (light.isHemisphereLight) {
+					var _uniforms8 = state.hemi[hemiLength];
+
+					_uniforms8.direction.setFromMatrixPosition(light.matrixWorld);
+
+					_uniforms8.direction.transformDirection(viewMatrix);
+
+					_uniforms8.direction.normalize();
+
+					hemiLength++;
+				}
+			}
+		}
+
+		return {
+			setup: setup,
+			setupView: setupView,
+			state: state
+		};
+	}
+
+	function WebGLRenderState(extensions, capabilities) {
+		var lights = new WebGLLights(extensions, capabilities);
+		var lightsArray = [];
+		var shadowsArray = [];
+
+		function init() {
+			lightsArray.length = 0;
+			shadowsArray.length = 0;
+		}
+
+		function pushLight(light) {
+			lightsArray.push(light);
+		}
+
+		function pushShadow(shadowLight) {
+			shadowsArray.push(shadowLight);
+		}
+
+		function setupLights() {
+			lights.setup(lightsArray);
+		}
+
+		function setupLightsView(camera) {
+			lights.setupView(lightsArray, camera);
+		}
+
+		var state = {
+			lightsArray: lightsArray,
+			shadowsArray: shadowsArray,
+			lights: lights
+		};
+		return {
+			init: init,
+			state: state,
+			setupLights: setupLights,
+			setupLightsView: setupLightsView,
+			pushLight: pushLight,
+			pushShadow: pushShadow
+		};
+	}
+
+	function WebGLRenderStates(extensions, capabilities) {
+		var renderStates = new WeakMap();
+
+		function get(scene, renderCallDepth) {
+			if (renderCallDepth === void 0) {
+				renderCallDepth = 0;
+			}
+
+			var renderState;
+
+			if (renderStates.has(scene) === false) {
+				renderState = new WebGLRenderState(extensions, capabilities);
+				renderStates.set(scene, [renderState]);
+			} else {
+				if (renderCallDepth >= renderStates.get(scene).length) {
+					renderState = new WebGLRenderState(extensions, capabilities);
+					renderStates.get(scene).push(renderState);
+				} else {
+					renderState = renderStates.get(scene)[renderCallDepth];
+				}
+			}
+
+			return renderState;
+		}
+
+		function dispose() {
+			renderStates = new WeakMap();
+		}
+
+		return {
+			get: get,
+			dispose: dispose
+		};
+	}
+
+	/**
+	 * parameters = {
+	 *
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>
+	 * }
+	 */
+
+	var MeshDepthMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshDepthMaterial, _Material);
+
+		function MeshDepthMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'MeshDepthMaterial';
+			_this.depthPacking = BasicDepthPacking;
+			_this.skinning = false;
+			_this.morphTargets = false;
+			_this.map = null;
+			_this.alphaMap = null;
+			_this.displacementMap = null;
+			_this.displacementScale = 1;
+			_this.displacementBias = 0;
+			_this.wireframe = false;
+			_this.wireframeLinewidth = 1;
+			_this.fog = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshDepthMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.depthPacking = source.depthPacking;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			return this;
+		};
+
+		return MeshDepthMaterial;
+	}(Material);
+
+	MeshDepthMaterial.prototype.isMeshDepthMaterial = true;
+
+	/**
+	 * parameters = {
+	 *
+	 *	referencePosition: <float>,
+	 *	nearDistance: <float>,
+	 *	farDistance: <float>,
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>
+	 *
+	 * }
+	 */
+
+	var MeshDistanceMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshDistanceMaterial, _Material);
+
+		function MeshDistanceMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'MeshDistanceMaterial';
+			_this.referencePosition = new Vector3();
+			_this.nearDistance = 1;
+			_this.farDistance = 1000;
+			_this.skinning = false;
+			_this.morphTargets = false;
+			_this.map = null;
+			_this.alphaMap = null;
+			_this.displacementMap = null;
+			_this.displacementScale = 1;
+			_this.displacementBias = 0;
+			_this.fog = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshDistanceMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.referencePosition.copy(source.referencePosition);
+			this.nearDistance = source.nearDistance;
+			this.farDistance = source.farDistance;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			return this;
+		};
+
+		return MeshDistanceMaterial;
+	}(Material);
+
+	MeshDistanceMaterial.prototype.isMeshDistanceMaterial = true;
+
+	var vsm_frag = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy ) / resolution ) );\n\tfor ( float i = -1.0; i < 1.0 ; i += SAMPLE_RATE) {\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( i, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, i ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean * HALF_SAMPLE_RATE;\n\tsquared_mean = squared_mean * HALF_SAMPLE_RATE;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";
+
+	var vsm_vert = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";
+
+	function WebGLShadowMap(_renderer, _objects, maxTextureSize) {
+		var _frustum = new Frustum();
+
+		var _shadowMapSize = new Vector2(),
+				_viewportSize = new Vector2(),
+				_viewport = new Vector4(),
+				_depthMaterials = [],
+				_distanceMaterials = [],
+				_materialCache = {};
+
+		var shadowSide = {
+			0: BackSide,
+			1: FrontSide,
+			2: DoubleSide
+		};
+		var shadowMaterialVertical = new ShaderMaterial({
+			defines: {
+				SAMPLE_RATE: 2.0 / 8.0,
+				HALF_SAMPLE_RATE: 1.0 / 8.0
+			},
+			uniforms: {
+				shadow_pass: {
+					value: null
+				},
+				resolution: {
+					value: new Vector2()
+				},
+				radius: {
+					value: 4.0
+				}
+			},
+			vertexShader: vsm_vert,
+			fragmentShader: vsm_frag
+		});
+		var shadowMaterialHorizontal = shadowMaterialVertical.clone();
+		shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;
+		var fullScreenTri = new BufferGeometry();
+		fullScreenTri.setAttribute('position', new BufferAttribute(new Float32Array([-1, -1, 0.5, 3, -1, 0.5, -1, 3, 0.5]), 3));
+		var fullScreenMesh = new Mesh(fullScreenTri, shadowMaterialVertical);
+		var scope = this;
+		this.enabled = false;
+		this.autoUpdate = true;
+		this.needsUpdate = false;
+		this.type = PCFShadowMap;
+
+		this.render = function (lights, scene, camera) {
+			if (scope.enabled === false) return;
+			if (scope.autoUpdate === false && scope.needsUpdate === false) return;
+			if (lights.length === 0) return;
+
+			var currentRenderTarget = _renderer.getRenderTarget();
+
+			var activeCubeFace = _renderer.getActiveCubeFace();
+
+			var activeMipmapLevel = _renderer.getActiveMipmapLevel();
+
+			var _state = _renderer.state; // Set GL state for depth map.
+
+			_state.setBlending(NoBlending);
+
+			_state.buffers.color.setClear(1, 1, 1, 1);
+
+			_state.buffers.depth.setTest(true);
+
+			_state.setScissorTest(false); // render depth map
+
+
+			for (var i = 0, il = lights.length; i < il; i++) {
+				var light = lights[i];
+				var shadow = light.shadow;
+
+				if (shadow === undefined) {
+					console.warn('THREE.WebGLShadowMap:', light, 'has no shadow.');
+					continue;
+				}
+
+				if (shadow.autoUpdate === false && shadow.needsUpdate === false) continue;
+
+				_shadowMapSize.copy(shadow.mapSize);
+
+				var shadowFrameExtents = shadow.getFrameExtents();
+
+				_shadowMapSize.multiply(shadowFrameExtents);
+
+				_viewportSize.copy(shadow.mapSize);
+
+				if (_shadowMapSize.x > maxTextureSize || _shadowMapSize.y > maxTextureSize) {
+					if (_shadowMapSize.x > maxTextureSize) {
+						_viewportSize.x = Math.floor(maxTextureSize / shadowFrameExtents.x);
+						_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
+						shadow.mapSize.x = _viewportSize.x;
+					}
+
+					if (_shadowMapSize.y > maxTextureSize) {
+						_viewportSize.y = Math.floor(maxTextureSize / shadowFrameExtents.y);
+						_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
+						shadow.mapSize.y = _viewportSize.y;
+					}
+				}
+
+				if (shadow.map === null && !shadow.isPointLightShadow && this.type === VSMShadowMap) {
+					var pars = {
+						minFilter: LinearFilter,
+						magFilter: LinearFilter,
+						format: RGBAFormat
+					};
+					shadow.map = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
+					shadow.map.texture.name = light.name + '.shadowMap';
+					shadow.mapPass = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, pars);
+					shadow.camera.updateProjectionMatrix();
+				}
+
+				if (shadow.map === null) {
+					var _pars = {
+						minFilter: NearestFilter,
+						magFilter: NearestFilter,
+						format: RGBAFormat
+					};
+					shadow.map = new WebGLRenderTarget(_shadowMapSize.x, _shadowMapSize.y, _pars);
+					shadow.map.texture.name = light.name + '.shadowMap';
+					shadow.camera.updateProjectionMatrix();
+				}
+
+				_renderer.setRenderTarget(shadow.map);
+
+				_renderer.clear();
+
+				var viewportCount = shadow.getViewportCount();
+
+				for (var vp = 0; vp < viewportCount; vp++) {
+					var viewport = shadow.getViewport(vp);
+
+					_viewport.set(_viewportSize.x * viewport.x, _viewportSize.y * viewport.y, _viewportSize.x * viewport.z, _viewportSize.y * viewport.w);
+
+					_state.viewport(_viewport);
+
+					shadow.updateMatrices(light, vp);
+					_frustum = shadow.getFrustum();
+					renderObject(scene, camera, shadow.camera, light, this.type);
+				} // do blur pass for VSM
+
+
+				if (!shadow.isPointLightShadow && this.type === VSMShadowMap) {
+					VSMPass(shadow, camera);
+				}
+
+				shadow.needsUpdate = false;
+			}
+
+			scope.needsUpdate = false;
+
+			_renderer.setRenderTarget(currentRenderTarget, activeCubeFace, activeMipmapLevel);
+		};
+
+		function VSMPass(shadow, camera) {
+			var geometry = _objects.update(fullScreenMesh); // vertical pass
+
+
+			shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
+			shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
+			shadowMaterialVertical.uniforms.radius.value = shadow.radius;
+
+			_renderer.setRenderTarget(shadow.mapPass);
+
+			_renderer.clear();
+
+			_renderer.renderBufferDirect(camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null); // horizontal pass
+
+
+			shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
+			shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
+			shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
+
+			_renderer.setRenderTarget(shadow.map);
+
+			_renderer.clear();
+
+			_renderer.renderBufferDirect(camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null);
+		}
+
+		function getDepthMaterialVariant(useMorphing, useSkinning, useInstancing) {
+			var index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;
+			var material = _depthMaterials[index];
+
+			if (material === undefined) {
+				material = new MeshDepthMaterial({
+					depthPacking: RGBADepthPacking,
+					morphTargets: useMorphing,
+					skinning: useSkinning
+				});
+				_depthMaterials[index] = material;
+			}
+
+			return material;
+		}
+
+		function getDistanceMaterialVariant(useMorphing, useSkinning, useInstancing) {
+			var index = useMorphing << 0 | useSkinning << 1 | useInstancing << 2;
+			var material = _distanceMaterials[index];
+
+			if (material === undefined) {
+				material = new MeshDistanceMaterial({
+					morphTargets: useMorphing,
+					skinning: useSkinning
+				});
+				_distanceMaterials[index] = material;
+			}
+
+			return material;
+		}
+
+		function getDepthMaterial(object, geometry, material, light, shadowCameraNear, shadowCameraFar, type) {
+			var result = null;
+			var getMaterialVariant = getDepthMaterialVariant;
+			var customMaterial = object.customDepthMaterial;
+
+			if (light.isPointLight === true) {
+				getMaterialVariant = getDistanceMaterialVariant;
+				customMaterial = object.customDistanceMaterial;
+			}
+
+			if (customMaterial === undefined) {
+				var useMorphing = false;
+
+				if (material.morphTargets === true) {
+					useMorphing = geometry.morphAttributes && geometry.morphAttributes.position && geometry.morphAttributes.position.length > 0;
+				}
+
+				var useSkinning = false;
+
+				if (object.isSkinnedMesh === true) {
+					if (material.skinning === true) {
+						useSkinning = true;
+					} else {
+						console.warn('THREE.WebGLShadowMap: THREE.SkinnedMesh with material.skinning set to false:', object);
+					}
+				}
+
+				var useInstancing = object.isInstancedMesh === true;
+				result = getMaterialVariant(useMorphing, useSkinning, useInstancing);
+			} else {
+				result = customMaterial;
+			}
+
+			if (_renderer.localClippingEnabled && material.clipShadows === true && material.clippingPlanes.length !== 0) {
+				// in this case we need a unique material instance reflecting the
+				// appropriate state
+				var keyA = result.uuid,
+						keyB = material.uuid;
+				var materialsForVariant = _materialCache[keyA];
+
+				if (materialsForVariant === undefined) {
+					materialsForVariant = {};
+					_materialCache[keyA] = materialsForVariant;
+				}
+
+				var cachedMaterial = materialsForVariant[keyB];
+
+				if (cachedMaterial === undefined) {
+					cachedMaterial = result.clone();
+					materialsForVariant[keyB] = cachedMaterial;
+				}
+
+				result = cachedMaterial;
+			}
+
+			result.visible = material.visible;
+			result.wireframe = material.wireframe;
+
+			if (type === VSMShadowMap) {
+				result.side = material.shadowSide !== null ? material.shadowSide : material.side;
+			} else {
+				result.side = material.shadowSide !== null ? material.shadowSide : shadowSide[material.side];
+			}
+
+			result.clipShadows = material.clipShadows;
+			result.clippingPlanes = material.clippingPlanes;
+			result.clipIntersection = material.clipIntersection;
+			result.wireframeLinewidth = material.wireframeLinewidth;
+			result.linewidth = material.linewidth;
+
+			if (light.isPointLight === true && result.isMeshDistanceMaterial === true) {
+				result.referencePosition.setFromMatrixPosition(light.matrixWorld);
+				result.nearDistance = shadowCameraNear;
+				result.farDistance = shadowCameraFar;
+			}
+
+			return result;
+		}
+
+		function renderObject(object, camera, shadowCamera, light, type) {
+			if (object.visible === false) return;
+			var visible = object.layers.test(camera.layers);
+
+			if (visible && (object.isMesh || object.isLine || object.isPoints)) {
+				if ((object.castShadow || object.receiveShadow && type === VSMShadowMap) && (!object.frustumCulled || _frustum.intersectsObject(object))) {
+					object.modelViewMatrix.multiplyMatrices(shadowCamera.matrixWorldInverse, object.matrixWorld);
+
+					var geometry = _objects.update(object);
+
+					var material = object.material;
+
+					if (Array.isArray(material)) {
+						var groups = geometry.groups;
+
+						for (var k = 0, kl = groups.length; k < kl; k++) {
+							var group = groups[k];
+							var groupMaterial = material[group.materialIndex];
+
+							if (groupMaterial && groupMaterial.visible) {
+								var depthMaterial = getDepthMaterial(object, geometry, groupMaterial, light, shadowCamera.near, shadowCamera.far, type);
+
+								_renderer.renderBufferDirect(shadowCamera, null, geometry, depthMaterial, object, group);
+							}
+						}
+					} else if (material.visible) {
+						var _depthMaterial = getDepthMaterial(object, geometry, material, light, shadowCamera.near, shadowCamera.far, type);
+
+						_renderer.renderBufferDirect(shadowCamera, null, geometry, _depthMaterial, object, null);
+					}
+				}
+			}
+
+			var children = object.children;
+
+			for (var i = 0, l = children.length; i < l; i++) {
+				renderObject(children[i], camera, shadowCamera, light, type);
+			}
+		}
+	}
+
+	function WebGLState(gl, extensions, capabilities) {
+		var _equationToGL, _factorToGL;
+
+		var isWebGL2 = capabilities.isWebGL2;
+
+		function ColorBuffer() {
+			var locked = false;
+			var color = new Vector4();
+			var currentColorMask = null;
+			var currentColorClear = new Vector4(0, 0, 0, 0);
+			return {
+				setMask: function setMask(colorMask) {
+					if (currentColorMask !== colorMask && !locked) {
+						gl.colorMask(colorMask, colorMask, colorMask, colorMask);
+						currentColorMask = colorMask;
+					}
+				},
+				setLocked: function setLocked(lock) {
+					locked = lock;
+				},
+				setClear: function setClear(r, g, b, a, premultipliedAlpha) {
+					if (premultipliedAlpha === true) {
+						r *= a;
+						g *= a;
+						b *= a;
+					}
+
+					color.set(r, g, b, a);
+
+					if (currentColorClear.equals(color) === false) {
+						gl.clearColor(r, g, b, a);
+						currentColorClear.copy(color);
+					}
+				},
+				reset: function reset() {
+					locked = false;
+					currentColorMask = null;
+					currentColorClear.set(-1, 0, 0, 0); // set to invalid state
+				}
+			};
+		}
+
+		function DepthBuffer() {
+			var locked = false;
+			var currentDepthMask = null;
+			var currentDepthFunc = null;
+			var currentDepthClear = null;
+			return {
+				setTest: function setTest(depthTest) {
+					if (depthTest) {
+						enable(2929);
+					} else {
+						disable(2929);
+					}
+				},
+				setMask: function setMask(depthMask) {
+					if (currentDepthMask !== depthMask && !locked) {
+						gl.depthMask(depthMask);
+						currentDepthMask = depthMask;
+					}
+				},
+				setFunc: function setFunc(depthFunc) {
+					if (currentDepthFunc !== depthFunc) {
+						if (depthFunc) {
+							switch (depthFunc) {
+								case NeverDepth:
+									gl.depthFunc(512);
+									break;
+
+								case AlwaysDepth:
+									gl.depthFunc(519);
+									break;
+
+								case LessDepth:
+									gl.depthFunc(513);
+									break;
+
+								case LessEqualDepth:
+									gl.depthFunc(515);
+									break;
+
+								case EqualDepth:
+									gl.depthFunc(514);
+									break;
+
+								case GreaterEqualDepth:
+									gl.depthFunc(518);
+									break;
+
+								case GreaterDepth:
+									gl.depthFunc(516);
+									break;
+
+								case NotEqualDepth:
+									gl.depthFunc(517);
+									break;
+
+								default:
+									gl.depthFunc(515);
+							}
+						} else {
+							gl.depthFunc(515);
+						}
+
+						currentDepthFunc = depthFunc;
+					}
+				},
+				setLocked: function setLocked(lock) {
+					locked = lock;
+				},
+				setClear: function setClear(depth) {
+					if (currentDepthClear !== depth) {
+						gl.clearDepth(depth);
+						currentDepthClear = depth;
+					}
+				},
+				reset: function reset() {
+					locked = false;
+					currentDepthMask = null;
+					currentDepthFunc = null;
+					currentDepthClear = null;
+				}
+			};
+		}
+
+		function StencilBuffer() {
+			var locked = false;
+			var currentStencilMask = null;
+			var currentStencilFunc = null;
+			var currentStencilRef = null;
+			var currentStencilFuncMask = null;
+			var currentStencilFail = null;
+			var currentStencilZFail = null;
+			var currentStencilZPass = null;
+			var currentStencilClear = null;
+			return {
+				setTest: function setTest(stencilTest) {
+					if (!locked) {
+						if (stencilTest) {
+							enable(2960);
+						} else {
+							disable(2960);
+						}
+					}
+				},
+				setMask: function setMask(stencilMask) {
+					if (currentStencilMask !== stencilMask && !locked) {
+						gl.stencilMask(stencilMask);
+						currentStencilMask = stencilMask;
+					}
+				},
+				setFunc: function setFunc(stencilFunc, stencilRef, stencilMask) {
+					if (currentStencilFunc !== stencilFunc || currentStencilRef !== stencilRef || currentStencilFuncMask !== stencilMask) {
+						gl.stencilFunc(stencilFunc, stencilRef, stencilMask);
+						currentStencilFunc = stencilFunc;
+						currentStencilRef = stencilRef;
+						currentStencilFuncMask = stencilMask;
+					}
+				},
+				setOp: function setOp(stencilFail, stencilZFail, stencilZPass) {
+					if (currentStencilFail !== stencilFail || currentStencilZFail !== stencilZFail || currentStencilZPass !== stencilZPass) {
+						gl.stencilOp(stencilFail, stencilZFail, stencilZPass);
+						currentStencilFail = stencilFail;
+						currentStencilZFail = stencilZFail;
+						currentStencilZPass = stencilZPass;
+					}
+				},
+				setLocked: function setLocked(lock) {
+					locked = lock;
+				},
+				setClear: function setClear(stencil) {
+					if (currentStencilClear !== stencil) {
+						gl.clearStencil(stencil);
+						currentStencilClear = stencil;
+					}
+				},
+				reset: function reset() {
+					locked = false;
+					currentStencilMask = null;
+					currentStencilFunc = null;
+					currentStencilRef = null;
+					currentStencilFuncMask = null;
+					currentStencilFail = null;
+					currentStencilZFail = null;
+					currentStencilZPass = null;
+					currentStencilClear = null;
+				}
+			};
+		} //
+
+
+		var colorBuffer = new ColorBuffer();
+		var depthBuffer = new DepthBuffer();
+		var stencilBuffer = new StencilBuffer();
+		var enabledCapabilities = {};
+		var currentProgram = null;
+		var currentBlendingEnabled = false;
+		var currentBlending = null;
+		var currentBlendEquation = null;
+		var currentBlendSrc = null;
+		var currentBlendDst = null;
+		var currentBlendEquationAlpha = null;
+		var currentBlendSrcAlpha = null;
+		var currentBlendDstAlpha = null;
+		var currentPremultipledAlpha = false;
+		var currentFlipSided = null;
+		var currentCullFace = null;
+		var currentLineWidth = null;
+		var currentPolygonOffsetFactor = null;
+		var currentPolygonOffsetUnits = null;
+		var maxTextures = gl.getParameter(35661);
+		var lineWidthAvailable = false;
+		var version = 0;
+		var glVersion = gl.getParameter(7938);
+
+		if (glVersion.indexOf('WebGL') !== -1) {
+			version = parseFloat(/^WebGL (\d)/.exec(glVersion)[1]);
+			lineWidthAvailable = version >= 1.0;
+		} else if (glVersion.indexOf('OpenGL ES') !== -1) {
+			version = parseFloat(/^OpenGL ES (\d)/.exec(glVersion)[1]);
+			lineWidthAvailable = version >= 2.0;
+		}
+
+		var currentTextureSlot = null;
+		var currentBoundTextures = {};
+		var currentScissor = new Vector4();
+		var currentViewport = new Vector4();
+
+		function createTexture(type, target, count) {
+			var data = new Uint8Array(4); // 4 is required to match default unpack alignment of 4.
+
+			var texture = gl.createTexture();
+			gl.bindTexture(type, texture);
+			gl.texParameteri(type, 10241, 9728);
+			gl.texParameteri(type, 10240, 9728);
+
+			for (var i = 0; i < count; i++) {
+				gl.texImage2D(target + i, 0, 6408, 1, 1, 0, 6408, 5121, data);
+			}
+
+			return texture;
+		}
+
+		var emptyTextures = {};
+		emptyTextures[3553] = createTexture(3553, 3553, 1);
+		emptyTextures[34067] = createTexture(34067, 34069, 6); // init
+
+		colorBuffer.setClear(0, 0, 0, 1);
+		depthBuffer.setClear(1);
+		stencilBuffer.setClear(0);
+		enable(2929);
+		depthBuffer.setFunc(LessEqualDepth);
+		setFlipSided(false);
+		setCullFace(CullFaceBack);
+		enable(2884);
+		setBlending(NoBlending); //
+
+		function enable(id) {
+			if (enabledCapabilities[id] !== true) {
+				gl.enable(id);
+				enabledCapabilities[id] = true;
+			}
+		}
+
+		function disable(id) {
+			if (enabledCapabilities[id] !== false) {
+				gl.disable(id);
+				enabledCapabilities[id] = false;
+			}
+		}
+
+		function useProgram(program) {
+			if (currentProgram !== program) {
+				gl.useProgram(program);
+				currentProgram = program;
+				return true;
+			}
+
+			return false;
+		}
+
+		var equationToGL = (_equationToGL = {}, _equationToGL[AddEquation] = 32774, _equationToGL[SubtractEquation] = 32778, _equationToGL[ReverseSubtractEquation] = 32779, _equationToGL);
+
+		if (isWebGL2) {
+			equationToGL[MinEquation] = 32775;
+			equationToGL[MaxEquation] = 32776;
+		} else {
+			var extension = extensions.get('EXT_blend_minmax');
+
+			if (extension !== null) {
+				equationToGL[MinEquation] = extension.MIN_EXT;
+				equationToGL[MaxEquation] = extension.MAX_EXT;
+			}
+		}
+
+		var factorToGL = (_factorToGL = {}, _factorToGL[ZeroFactor] = 0, _factorToGL[OneFactor] = 1, _factorToGL[SrcColorFactor] = 768, _factorToGL[SrcAlphaFactor] = 770, _factorToGL[SrcAlphaSaturateFactor] = 776, _factorToGL[DstColorFactor] = 774, _factorToGL[DstAlphaFactor] = 772, _factorToGL[OneMinusSrcColorFactor] = 769, _factorToGL[OneMinusSrcAlphaFactor] = 771, _factorToGL[OneMinusDstColorFactor] = 775, _factorToGL[OneMinusDstAlphaFactor] = 773, _factorToGL);
+
+		function setBlending(blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, premultipliedAlpha) {
+			if (blending === NoBlending) {
+				if (currentBlendingEnabled === true) {
+					disable(3042);
+					currentBlendingEnabled = false;
+				}
+
+				return;
+			}
+
+			if (currentBlendingEnabled === false) {
+				enable(3042);
+				currentBlendingEnabled = true;
+			}
+
+			if (blending !== CustomBlending) {
+				if (blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha) {
+					if (currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation) {
+						gl.blendEquation(32774);
+						currentBlendEquation = AddEquation;
+						currentBlendEquationAlpha = AddEquation;
+					}
+
+					if (premultipliedAlpha) {
+						switch (blending) {
+							case NormalBlending:
+								gl.blendFuncSeparate(1, 771, 1, 771);
+								break;
+
+							case AdditiveBlending:
+								gl.blendFunc(1, 1);
+								break;
+
+							case SubtractiveBlending:
+								gl.blendFuncSeparate(0, 0, 769, 771);
+								break;
+
+							case MultiplyBlending:
+								gl.blendFuncSeparate(0, 768, 0, 770);
+								break;
+
+							default:
+								console.error('THREE.WebGLState: Invalid blending: ', blending);
+								break;
+						}
+					} else {
+						switch (blending) {
+							case NormalBlending:
+								gl.blendFuncSeparate(770, 771, 1, 771);
+								break;
+
+							case AdditiveBlending:
+								gl.blendFunc(770, 1);
+								break;
+
+							case SubtractiveBlending:
+								gl.blendFunc(0, 769);
+								break;
+
+							case MultiplyBlending:
+								gl.blendFunc(0, 768);
+								break;
+
+							default:
+								console.error('THREE.WebGLState: Invalid blending: ', blending);
+								break;
+						}
+					}
+
+					currentBlendSrc = null;
+					currentBlendDst = null;
+					currentBlendSrcAlpha = null;
+					currentBlendDstAlpha = null;
+					currentBlending = blending;
+					currentPremultipledAlpha = premultipliedAlpha;
+				}
+
+				return;
+			} // custom blending
+
+
+			blendEquationAlpha = blendEquationAlpha || blendEquation;
+			blendSrcAlpha = blendSrcAlpha || blendSrc;
+			blendDstAlpha = blendDstAlpha || blendDst;
+
+			if (blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha) {
+				gl.blendEquationSeparate(equationToGL[blendEquation], equationToGL[blendEquationAlpha]);
+				currentBlendEquation = blendEquation;
+				currentBlendEquationAlpha = blendEquationAlpha;
+			}
+
+			if (blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha) {
+				gl.blendFuncSeparate(factorToGL[blendSrc], factorToGL[blendDst], factorToGL[blendSrcAlpha], factorToGL[blendDstAlpha]);
+				currentBlendSrc = blendSrc;
+				currentBlendDst = blendDst;
+				currentBlendSrcAlpha = blendSrcAlpha;
+				currentBlendDstAlpha = blendDstAlpha;
+			}
+
+			currentBlending = blending;
+			currentPremultipledAlpha = null;
+		}
+
+		function setMaterial(material, frontFaceCW) {
+			material.side === DoubleSide ? disable(2884) : enable(2884);
+			var flipSided = material.side === BackSide;
+			if (frontFaceCW) flipSided = !flipSided;
+			setFlipSided(flipSided);
+			material.blending === NormalBlending && material.transparent === false ? setBlending(NoBlending) : setBlending(material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.premultipliedAlpha);
+			depthBuffer.setFunc(material.depthFunc);
+			depthBuffer.setTest(material.depthTest);
+			depthBuffer.setMask(material.depthWrite);
+			colorBuffer.setMask(material.colorWrite);
+			var stencilWrite = material.stencilWrite;
+			stencilBuffer.setTest(stencilWrite);
+
+			if (stencilWrite) {
+				stencilBuffer.setMask(material.stencilWriteMask);
+				stencilBuffer.setFunc(material.stencilFunc, material.stencilRef, material.stencilFuncMask);
+				stencilBuffer.setOp(material.stencilFail, material.stencilZFail, material.stencilZPass);
+			}
+
+			setPolygonOffset(material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits);
+		} //
+
+
+		function setFlipSided(flipSided) {
+			if (currentFlipSided !== flipSided) {
+				if (flipSided) {
+					gl.frontFace(2304);
+				} else {
+					gl.frontFace(2305);
+				}
+
+				currentFlipSided = flipSided;
+			}
+		}
+
+		function setCullFace(cullFace) {
+			if (cullFace !== CullFaceNone) {
+				enable(2884);
+
+				if (cullFace !== currentCullFace) {
+					if (cullFace === CullFaceBack) {
+						gl.cullFace(1029);
+					} else if (cullFace === CullFaceFront) {
+						gl.cullFace(1028);
+					} else {
+						gl.cullFace(1032);
+					}
+				}
+			} else {
+				disable(2884);
+			}
+
+			currentCullFace = cullFace;
+		}
+
+		function setLineWidth(width) {
+			if (width !== currentLineWidth) {
+				if (lineWidthAvailable) gl.lineWidth(width);
+				currentLineWidth = width;
+			}
+		}
+
+		function setPolygonOffset(polygonOffset, factor, units) {
+			if (polygonOffset) {
+				enable(32823);
+
+				if (currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units) {
+					gl.polygonOffset(factor, units);
+					currentPolygonOffsetFactor = factor;
+					currentPolygonOffsetUnits = units;
+				}
+			} else {
+				disable(32823);
+			}
+		}
+
+		function setScissorTest(scissorTest) {
+			if (scissorTest) {
+				enable(3089);
+			} else {
+				disable(3089);
+			}
+		} // texture
+
+
+		function activeTexture(webglSlot) {
+			if (webglSlot === undefined) webglSlot = 33984 + maxTextures - 1;
+
+			if (currentTextureSlot !== webglSlot) {
+				gl.activeTexture(webglSlot);
+				currentTextureSlot = webglSlot;
+			}
+		}
+
+		function bindTexture(webglType, webglTexture) {
+			if (currentTextureSlot === null) {
+				activeTexture();
+			}
+
+			var boundTexture = currentBoundTextures[currentTextureSlot];
+
+			if (boundTexture === undefined) {
+				boundTexture = {
+					type: undefined,
+					texture: undefined
+				};
+				currentBoundTextures[currentTextureSlot] = boundTexture;
+			}
+
+			if (boundTexture.type !== webglType || boundTexture.texture !== webglTexture) {
+				gl.bindTexture(webglType, webglTexture || emptyTextures[webglType]);
+				boundTexture.type = webglType;
+				boundTexture.texture = webglTexture;
+			}
+		}
+
+		function unbindTexture() {
+			var boundTexture = currentBoundTextures[currentTextureSlot];
+
+			if (boundTexture !== undefined && boundTexture.type !== undefined) {
+				gl.bindTexture(boundTexture.type, null);
+				boundTexture.type = undefined;
+				boundTexture.texture = undefined;
+			}
+		}
+
+		function compressedTexImage2D() {
+			try {
+				gl.compressedTexImage2D.apply(gl, arguments);
+			} catch (error) {
+				console.error('THREE.WebGLState:', error);
+			}
+		}
+
+		function texImage2D() {
+			try {
+				gl.texImage2D.apply(gl, arguments);
+			} catch (error) {
+				console.error('THREE.WebGLState:', error);
+			}
+		}
+
+		function texImage3D() {
+			try {
+				gl.texImage3D.apply(gl, arguments);
+			} catch (error) {
+				console.error('THREE.WebGLState:', error);
+			}
+		} //
+
+
+		function scissor(scissor) {
+			if (currentScissor.equals(scissor) === false) {
+				gl.scissor(scissor.x, scissor.y, scissor.z, scissor.w);
+				currentScissor.copy(scissor);
+			}
+		}
+
+		function viewport(viewport) {
+			if (currentViewport.equals(viewport) === false) {
+				gl.viewport(viewport.x, viewport.y, viewport.z, viewport.w);
+				currentViewport.copy(viewport);
+			}
+		} //
+
+
+		function reset() {
+			// reset state
+			gl.disable(3042);
+			gl.disable(2884);
+			gl.disable(2929);
+			gl.disable(32823);
+			gl.disable(3089);
+			gl.disable(2960);
+			gl.blendEquation(32774);
+			gl.blendFunc(1, 0);
+			gl.blendFuncSeparate(1, 0, 1, 0);
+			gl.colorMask(true, true, true, true);
+			gl.clearColor(0, 0, 0, 0);
+			gl.depthMask(true);
+			gl.depthFunc(513);
+			gl.clearDepth(1);
+			gl.stencilMask(0xffffffff);
+			gl.stencilFunc(519, 0, 0xffffffff);
+			gl.stencilOp(7680, 7680, 7680);
+			gl.clearStencil(0);
+			gl.cullFace(1029);
+			gl.frontFace(2305);
+			gl.polygonOffset(0, 0);
+			gl.activeTexture(33984);
+			gl.useProgram(null);
+			gl.lineWidth(1);
+			gl.scissor(0, 0, gl.canvas.width, gl.canvas.height);
+			gl.viewport(0, 0, gl.canvas.width, gl.canvas.height); // reset internals
+
+			enabledCapabilities = {};
+			currentTextureSlot = null;
+			currentBoundTextures = {};
+			currentProgram = null;
+			currentBlendingEnabled = false;
+			currentBlending = null;
+			currentBlendEquation = null;
+			currentBlendSrc = null;
+			currentBlendDst = null;
+			currentBlendEquationAlpha = null;
+			currentBlendSrcAlpha = null;
+			currentBlendDstAlpha = null;
+			currentPremultipledAlpha = false;
+			currentFlipSided = null;
+			currentCullFace = null;
+			currentLineWidth = null;
+			currentPolygonOffsetFactor = null;
+			currentPolygonOffsetUnits = null;
+			colorBuffer.reset();
+			depthBuffer.reset();
+			stencilBuffer.reset();
+		}
+
+		return {
+			buffers: {
+				color: colorBuffer,
+				depth: depthBuffer,
+				stencil: stencilBuffer
+			},
+			enable: enable,
+			disable: disable,
+			useProgram: useProgram,
+			setBlending: setBlending,
+			setMaterial: setMaterial,
+			setFlipSided: setFlipSided,
+			setCullFace: setCullFace,
+			setLineWidth: setLineWidth,
+			setPolygonOffset: setPolygonOffset,
+			setScissorTest: setScissorTest,
+			activeTexture: activeTexture,
+			bindTexture: bindTexture,
+			unbindTexture: unbindTexture,
+			compressedTexImage2D: compressedTexImage2D,
+			texImage2D: texImage2D,
+			texImage3D: texImage3D,
+			scissor: scissor,
+			viewport: viewport,
+			reset: reset
+		};
+	}
+
+	function WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info) {
+		var _wrappingToGL, _filterToGL;
+
+		var isWebGL2 = capabilities.isWebGL2;
+		var maxTextures = capabilities.maxTextures;
+		var maxCubemapSize = capabilities.maxCubemapSize;
+		var maxTextureSize = capabilities.maxTextureSize;
+		var maxSamples = capabilities.maxSamples;
+
+		var _videoTextures = new WeakMap();
+
+		var _canvas; // cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
+		// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
+		// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).
+
+
+		var useOffscreenCanvas = false;
+
+		try {
+			useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined' && new OffscreenCanvas(1, 1).getContext('2d') !== null;
+		} catch (err) {// Ignore any errors
+		}
+
+		function createCanvas(width, height) {
+			// Use OffscreenCanvas when available. Specially needed in web workers
+			return useOffscreenCanvas ? new OffscreenCanvas(width, height) : document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
+		}
+
+		function resizeImage(image, needsPowerOfTwo, needsNewCanvas, maxSize) {
+			var scale = 1; // handle case if texture exceeds max size
+
+			if (image.width > maxSize || image.height > maxSize) {
+				scale = maxSize / Math.max(image.width, image.height);
+			} // only perform resize if necessary
+
+
+			if (scale < 1 || needsPowerOfTwo === true) {
+				// only perform resize for certain image types
+				if (typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement || typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement || typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap) {
+					var floor = needsPowerOfTwo ? MathUtils.floorPowerOfTwo : Math.floor;
+					var width = floor(scale * image.width);
+					var height = floor(scale * image.height);
+					if (_canvas === undefined) _canvas = createCanvas(width, height); // cube textures can't reuse the same canvas
+
+					var canvas = needsNewCanvas ? createCanvas(width, height) : _canvas;
+					canvas.width = width;
+					canvas.height = height;
+					var context = canvas.getContext('2d');
+					context.drawImage(image, 0, 0, width, height);
+					console.warn('THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').');
+					return canvas;
+				} else {
+					if ('data' in image) {
+						console.warn('THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').');
+					}
+
+					return image;
+				}
+			}
+
+			return image;
+		}
+
+		function isPowerOfTwo(image) {
+			return MathUtils.isPowerOfTwo(image.width) && MathUtils.isPowerOfTwo(image.height);
+		}
+
+		function textureNeedsPowerOfTwo(texture) {
+			if (isWebGL2) return false;
+			return texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping || texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
+		}
+
+		function textureNeedsGenerateMipmaps(texture, supportsMips) {
+			return texture.generateMipmaps && supportsMips && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
+		}
+
+		function generateMipmap(target, texture, width, height) {
+			_gl.generateMipmap(target);
+
+			var textureProperties = properties.get(texture);
+			textureProperties.__maxMipLevel = Math.log2(Math.max(width, height));
+		}
+
+		function getInternalFormat(internalFormatName, glFormat, glType) {
+			if (isWebGL2 === false) return glFormat;
+
+			if (internalFormatName !== null) {
+				if (_gl[internalFormatName] !== undefined) return _gl[internalFormatName];
+				console.warn('THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'');
+			}
+
+			var internalFormat = glFormat;
+
+			if (glFormat === 6403) {
+				if (glType === 5126) internalFormat = 33326;
+				if (glType === 5131) internalFormat = 33325;
+				if (glType === 5121) internalFormat = 33321;
+			}
+
+			if (glFormat === 6407) {
+				if (glType === 5126) internalFormat = 34837;
+				if (glType === 5131) internalFormat = 34843;
+				if (glType === 5121) internalFormat = 32849;
+			}
+
+			if (glFormat === 6408) {
+				if (glType === 5126) internalFormat = 34836;
+				if (glType === 5131) internalFormat = 34842;
+				if (glType === 5121) internalFormat = 32856;
+			}
+
+			if (internalFormat === 33325 || internalFormat === 33326 || internalFormat === 34842 || internalFormat === 34836) {
+				extensions.get('EXT_color_buffer_float');
+			}
+
+			return internalFormat;
+		} // Fallback filters for non-power-of-2 textures
+
+
+		function filterFallback(f) {
+			if (f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter) {
+				return 9728;
+			}
+
+			return 9729;
+		} //
+
+
+		function onTextureDispose(event) {
+			var texture = event.target;
+			texture.removeEventListener('dispose', onTextureDispose);
+			deallocateTexture(texture);
+
+			if (texture.isVideoTexture) {
+				_videoTextures.delete(texture);
+			}
+
+			info.memory.textures--;
+		}
+
+		function onRenderTargetDispose(event) {
+			var renderTarget = event.target;
+			renderTarget.removeEventListener('dispose', onRenderTargetDispose);
+			deallocateRenderTarget(renderTarget);
+			info.memory.textures--;
+		} //
+
+
+		function deallocateTexture(texture) {
+			var textureProperties = properties.get(texture);
+			if (textureProperties.__webglInit === undefined) return;
+
+			_gl.deleteTexture(textureProperties.__webglTexture);
+
+			properties.remove(texture);
+		}
+
+		function deallocateRenderTarget(renderTarget) {
+			var texture = renderTarget.texture;
+			var renderTargetProperties = properties.get(renderTarget);
+			var textureProperties = properties.get(texture);
+			if (!renderTarget) return;
+
+			if (textureProperties.__webglTexture !== undefined) {
+				_gl.deleteTexture(textureProperties.__webglTexture);
+			}
+
+			if (renderTarget.depthTexture) {
+				renderTarget.depthTexture.dispose();
+			}
+
+			if (renderTarget.isWebGLCubeRenderTarget) {
+				for (var i = 0; i < 6; i++) {
+					_gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer[i]);
+
+					if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer[i]);
+				}
+			} else {
+				_gl.deleteFramebuffer(renderTargetProperties.__webglFramebuffer);
+
+				if (renderTargetProperties.__webglDepthbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthbuffer);
+				if (renderTargetProperties.__webglMultisampledFramebuffer) _gl.deleteFramebuffer(renderTargetProperties.__webglMultisampledFramebuffer);
+				if (renderTargetProperties.__webglColorRenderbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglColorRenderbuffer);
+				if (renderTargetProperties.__webglDepthRenderbuffer) _gl.deleteRenderbuffer(renderTargetProperties.__webglDepthRenderbuffer);
+			}
+
+			properties.remove(texture);
+			properties.remove(renderTarget);
+		} //
+
+
+		var textureUnits = 0;
+
+		function resetTextureUnits() {
+			textureUnits = 0;
+		}
+
+		function allocateTextureUnit() {
+			var textureUnit = textureUnits;
+
+			if (textureUnit >= maxTextures) {
+				console.warn('THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures);
+			}
+
+			textureUnits += 1;
+			return textureUnit;
+		} //
+
+
+		function setTexture2D(texture, slot) {
+			var textureProperties = properties.get(texture);
+			if (texture.isVideoTexture) updateVideoTexture(texture);
+
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				var image = texture.image;
+
+				if (image === undefined) {
+					console.warn('THREE.WebGLRenderer: Texture marked for update but image is undefined');
+				} else if (image.complete === false) {
+					console.warn('THREE.WebGLRenderer: Texture marked for update but image is incomplete');
+				} else {
+					uploadTexture(textureProperties, texture, slot);
+					return;
+				}
+			}
+
+			state.activeTexture(33984 + slot);
+			state.bindTexture(3553, textureProperties.__webglTexture);
+		}
+
+		function setTexture2DArray(texture, slot) {
+			var textureProperties = properties.get(texture);
+
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				uploadTexture(textureProperties, texture, slot);
+				return;
+			}
+
+			state.activeTexture(33984 + slot);
+			state.bindTexture(35866, textureProperties.__webglTexture);
+		}
+
+		function setTexture3D(texture, slot) {
+			var textureProperties = properties.get(texture);
+
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				uploadTexture(textureProperties, texture, slot);
+				return;
+			}
+
+			state.activeTexture(33984 + slot);
+			state.bindTexture(32879, textureProperties.__webglTexture);
+		}
+
+		function setTextureCube(texture, slot) {
+			var textureProperties = properties.get(texture);
+
+			if (texture.version > 0 && textureProperties.__version !== texture.version) {
+				uploadCubeTexture(textureProperties, texture, slot);
+				return;
+			}
+
+			state.activeTexture(33984 + slot);
+			state.bindTexture(34067, textureProperties.__webglTexture);
+		}
+
+		var wrappingToGL = (_wrappingToGL = {}, _wrappingToGL[RepeatWrapping] = 10497, _wrappingToGL[ClampToEdgeWrapping] = 33071, _wrappingToGL[MirroredRepeatWrapping] = 33648, _wrappingToGL);
+		var filterToGL = (_filterToGL = {}, _filterToGL[NearestFilter] = 9728, _filterToGL[NearestMipmapNearestFilter] = 9984, _filterToGL[NearestMipmapLinearFilter] = 9986, _filterToGL[LinearFilter] = 9729, _filterToGL[LinearMipmapNearestFilter] = 9985, _filterToGL[LinearMipmapLinearFilter] = 9987, _filterToGL);
+
+		function setTextureParameters(textureType, texture, supportsMips) {
+			if (supportsMips) {
+				_gl.texParameteri(textureType, 10242, wrappingToGL[texture.wrapS]);
+
+				_gl.texParameteri(textureType, 10243, wrappingToGL[texture.wrapT]);
+
+				if (textureType === 32879 || textureType === 35866) {
+					_gl.texParameteri(textureType, 32882, wrappingToGL[texture.wrapR]);
+				}
+
+				_gl.texParameteri(textureType, 10240, filterToGL[texture.magFilter]);
+
+				_gl.texParameteri(textureType, 10241, filterToGL[texture.minFilter]);
+			} else {
+				_gl.texParameteri(textureType, 10242, 33071);
+
+				_gl.texParameteri(textureType, 10243, 33071);
+
+				if (textureType === 32879 || textureType === 35866) {
+					_gl.texParameteri(textureType, 32882, 33071);
+				}
+
+				if (texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping) {
+					console.warn('THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.');
+				}
+
+				_gl.texParameteri(textureType, 10240, filterFallback(texture.magFilter));
+
+				_gl.texParameteri(textureType, 10241, filterFallback(texture.minFilter));
+
+				if (texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter) {
+					console.warn('THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.');
+				}
+			}
+
+			if (extensions.has('EXT_texture_filter_anisotropic') === true) {
+				var extension = extensions.get('EXT_texture_filter_anisotropic');
+				if (texture.type === FloatType && extensions.has('OES_texture_float_linear') === false) return; // verify extension for WebGL 1 and WebGL 2
+
+				if (isWebGL2 === false && texture.type === HalfFloatType && extensions.has('OES_texture_half_float_linear') === false) return; // verify extension for WebGL 1 only
+
+				if (texture.anisotropy > 1 || properties.get(texture).__currentAnisotropy) {
+					_gl.texParameterf(textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min(texture.anisotropy, capabilities.getMaxAnisotropy()));
+
+					properties.get(texture).__currentAnisotropy = texture.anisotropy;
+				}
+			}
+		}
+
+		function initTexture(textureProperties, texture) {
+			if (textureProperties.__webglInit === undefined) {
+				textureProperties.__webglInit = true;
+				texture.addEventListener('dispose', onTextureDispose);
+				textureProperties.__webglTexture = _gl.createTexture();
+				info.memory.textures++;
+			}
+		}
+
+		function uploadTexture(textureProperties, texture, slot) {
+			var textureType = 3553;
+			if (texture.isDataTexture2DArray) textureType = 35866;
+			if (texture.isDataTexture3D) textureType = 32879;
+			initTexture(textureProperties, texture);
+			state.activeTexture(33984 + slot);
+			state.bindTexture(textureType, textureProperties.__webglTexture);
+
+			_gl.pixelStorei(37440, texture.flipY);
+
+			_gl.pixelStorei(37441, texture.premultiplyAlpha);
+
+			_gl.pixelStorei(3317, texture.unpackAlignment);
+
+			_gl.pixelStorei(37443, 0);
+
+			var needsPowerOfTwo = textureNeedsPowerOfTwo(texture) && isPowerOfTwo(texture.image) === false;
+			var image = resizeImage(texture.image, needsPowerOfTwo, false, maxTextureSize);
+			var supportsMips = isPowerOfTwo(image) || isWebGL2,
+					glFormat = utils.convert(texture.format);
+			var glType = utils.convert(texture.type),
+					glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+			setTextureParameters(textureType, texture, supportsMips);
+			var mipmap;
+			var mipmaps = texture.mipmaps;
+
+			if (texture.isDepthTexture) {
+				// populate depth texture with dummy data
+				glInternalFormat = 6402;
+
+				if (isWebGL2) {
+					if (texture.type === FloatType) {
+						glInternalFormat = 36012;
+					} else if (texture.type === UnsignedIntType) {
+						glInternalFormat = 33190;
+					} else if (texture.type === UnsignedInt248Type) {
+						glInternalFormat = 35056;
+					} else {
+						glInternalFormat = 33189; // WebGL2 requires sized internalformat for glTexImage2D
+					}
+				} else {
+					if (texture.type === FloatType) {
+						console.error('WebGLRenderer: Floating point depth texture requires WebGL2.');
+					}
+				} // validation checks for WebGL 1
+
+
+				if (texture.format === DepthFormat && glInternalFormat === 6402) {
+					// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
+					// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
+					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
+					if (texture.type !== UnsignedShortType && texture.type !== UnsignedIntType) {
+						console.warn('THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.');
+						texture.type = UnsignedShortType;
+						glType = utils.convert(texture.type);
+					}
+				}
+
+				if (texture.format === DepthStencilFormat && glInternalFormat === 6402) {
+					// Depth stencil textures need the DEPTH_STENCIL internal format
+					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
+					glInternalFormat = 34041; // The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
+					// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
+					// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
+
+					if (texture.type !== UnsignedInt248Type) {
+						console.warn('THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.');
+						texture.type = UnsignedInt248Type;
+						glType = utils.convert(texture.type);
+					}
+				} //
+
+
+				state.texImage2D(3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null);
+			} else if (texture.isDataTexture) {
+				// use manually created mipmaps if available
+				// if there are no manual mipmaps
+				// set 0 level mipmap and then use GL to generate other mipmap levels
+				if (mipmaps.length > 0 && supportsMips) {
+					for (var i = 0, il = mipmaps.length; i < il; i++) {
+						mipmap = mipmaps[i];
+						state.texImage2D(3553, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
+					}
+
+					texture.generateMipmaps = false;
+					textureProperties.__maxMipLevel = mipmaps.length - 1;
+				} else {
+					state.texImage2D(3553, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data);
+					textureProperties.__maxMipLevel = 0;
+				}
+			} else if (texture.isCompressedTexture) {
+				for (var _i = 0, _il = mipmaps.length; _i < _il; _i++) {
+					mipmap = mipmaps[_i];
+
+					if (texture.format !== RGBAFormat && texture.format !== RGBFormat) {
+						if (glFormat !== null) {
+							state.compressedTexImage2D(3553, _i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
+						} else {
+							console.warn('THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()');
+						}
+					} else {
+						state.texImage2D(3553, _i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
+					}
+				}
+
+				textureProperties.__maxMipLevel = mipmaps.length - 1;
+			} else if (texture.isDataTexture2DArray) {
+				state.texImage3D(35866, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
+				textureProperties.__maxMipLevel = 0;
+			} else if (texture.isDataTexture3D) {
+				state.texImage3D(32879, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data);
+				textureProperties.__maxMipLevel = 0;
+			} else {
+				// regular Texture (image, video, canvas)
+				// use manually created mipmaps if available
+				// if there are no manual mipmaps
+				// set 0 level mipmap and then use GL to generate other mipmap levels
+				if (mipmaps.length > 0 && supportsMips) {
+					for (var _i2 = 0, _il2 = mipmaps.length; _i2 < _il2; _i2++) {
+						mipmap = mipmaps[_i2];
+						state.texImage2D(3553, _i2, glInternalFormat, glFormat, glType, mipmap);
+					}
+
+					texture.generateMipmaps = false;
+					textureProperties.__maxMipLevel = mipmaps.length - 1;
+				} else {
+					state.texImage2D(3553, 0, glInternalFormat, glFormat, glType, image);
+					textureProperties.__maxMipLevel = 0;
+				}
+			}
+
+			if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+				generateMipmap(textureType, texture, image.width, image.height);
+			}
+
+			textureProperties.__version = texture.version;
+			if (texture.onUpdate) texture.onUpdate(texture);
+		}
+
+		function uploadCubeTexture(textureProperties, texture, slot) {
+			if (texture.image.length !== 6) return;
+			initTexture(textureProperties, texture);
+			state.activeTexture(33984 + slot);
+			state.bindTexture(34067, textureProperties.__webglTexture);
+
+			_gl.pixelStorei(37440, texture.flipY);
+
+			_gl.pixelStorei(37441, texture.premultiplyAlpha);
+
+			_gl.pixelStorei(3317, texture.unpackAlignment);
+
+			_gl.pixelStorei(37443, 0);
+
+			var isCompressed = texture && (texture.isCompressedTexture || texture.image[0].isCompressedTexture);
+			var isDataTexture = texture.image[0] && texture.image[0].isDataTexture;
+			var cubeImage = [];
+
+			for (var i = 0; i < 6; i++) {
+				if (!isCompressed && !isDataTexture) {
+					cubeImage[i] = resizeImage(texture.image[i], false, true, maxCubemapSize);
+				} else {
+					cubeImage[i] = isDataTexture ? texture.image[i].image : texture.image[i];
+				}
+			}
+
+			var image = cubeImage[0],
+					supportsMips = isPowerOfTwo(image) || isWebGL2,
+					glFormat = utils.convert(texture.format),
+					glType = utils.convert(texture.type),
+					glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+			setTextureParameters(34067, texture, supportsMips);
+			var mipmaps;
+
+			if (isCompressed) {
+				for (var _i3 = 0; _i3 < 6; _i3++) {
+					mipmaps = cubeImage[_i3].mipmaps;
+
+					for (var j = 0; j < mipmaps.length; j++) {
+						var mipmap = mipmaps[j];
+
+						if (texture.format !== RGBAFormat && texture.format !== RGBFormat) {
+							if (glFormat !== null) {
+								state.compressedTexImage2D(34069 + _i3, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data);
+							} else {
+								console.warn('THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()');
+							}
+						} else {
+							state.texImage2D(34069 + _i3, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data);
+						}
+					}
+				}
+
+				textureProperties.__maxMipLevel = mipmaps.length - 1;
+			} else {
+				mipmaps = texture.mipmaps;
+
+				for (var _i4 = 0; _i4 < 6; _i4++) {
+					if (isDataTexture) {
+						state.texImage2D(34069 + _i4, 0, glInternalFormat, cubeImage[_i4].width, cubeImage[_i4].height, 0, glFormat, glType, cubeImage[_i4].data);
+
+						for (var _j = 0; _j < mipmaps.length; _j++) {
+							var _mipmap = mipmaps[_j];
+							var mipmapImage = _mipmap.image[_i4].image;
+							state.texImage2D(34069 + _i4, _j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data);
+						}
+					} else {
+						state.texImage2D(34069 + _i4, 0, glInternalFormat, glFormat, glType, cubeImage[_i4]);
+
+						for (var _j2 = 0; _j2 < mipmaps.length; _j2++) {
+							var _mipmap2 = mipmaps[_j2];
+							state.texImage2D(34069 + _i4, _j2 + 1, glInternalFormat, glFormat, glType, _mipmap2.image[_i4]);
+						}
+					}
+				}
+
+				textureProperties.__maxMipLevel = mipmaps.length;
+			}
+
+			if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+				// We assume images for cube map have the same size.
+				generateMipmap(34067, texture, image.width, image.height);
+			}
+
+			textureProperties.__version = texture.version;
+			if (texture.onUpdate) texture.onUpdate(texture);
+		} // Render targets
+		// Setup storage for target texture and bind it to correct framebuffer
+
+
+		function setupFrameBufferTexture(framebuffer, renderTarget, attachment, textureTarget) {
+			var texture = renderTarget.texture;
+			var glFormat = utils.convert(texture.format);
+			var glType = utils.convert(texture.type);
+			var glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+
+			if (textureTarget === 32879 || textureTarget === 35866) {
+				state.texImage3D(textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.depth, 0, glFormat, glType, null);
+			} else {
+				state.texImage2D(textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null);
+			}
+
+			_gl.bindFramebuffer(36160, framebuffer);
+
+			_gl.framebufferTexture2D(36160, attachment, textureTarget, properties.get(texture).__webglTexture, 0);
+
+			_gl.bindFramebuffer(36160, null);
+		} // Setup storage for internal depth/stencil buffers and bind to correct framebuffer
+
+
+		function setupRenderBufferStorage(renderbuffer, renderTarget, isMultisample) {
+			_gl.bindRenderbuffer(36161, renderbuffer);
+
+			if (renderTarget.depthBuffer && !renderTarget.stencilBuffer) {
+				var glInternalFormat = 33189;
+
+				if (isMultisample) {
+					var depthTexture = renderTarget.depthTexture;
+
+					if (depthTexture && depthTexture.isDepthTexture) {
+						if (depthTexture.type === FloatType) {
+							glInternalFormat = 36012;
+						} else if (depthTexture.type === UnsignedIntType) {
+							glInternalFormat = 33190;
+						}
+					}
+
+					var samples = getRenderTargetSamples(renderTarget);
+
+					_gl.renderbufferStorageMultisample(36161, samples, glInternalFormat, renderTarget.width, renderTarget.height);
+				} else {
+					_gl.renderbufferStorage(36161, glInternalFormat, renderTarget.width, renderTarget.height);
+				}
+
+				_gl.framebufferRenderbuffer(36160, 36096, 36161, renderbuffer);
+			} else if (renderTarget.depthBuffer && renderTarget.stencilBuffer) {
+				if (isMultisample) {
+					var _samples = getRenderTargetSamples(renderTarget);
+
+					_gl.renderbufferStorageMultisample(36161, _samples, 35056, renderTarget.width, renderTarget.height);
+				} else {
+					_gl.renderbufferStorage(36161, 34041, renderTarget.width, renderTarget.height);
+				}
+
+				_gl.framebufferRenderbuffer(36160, 33306, 36161, renderbuffer);
+			} else {
+				var texture = renderTarget.texture;
+				var glFormat = utils.convert(texture.format);
+				var glType = utils.convert(texture.type);
+
+				var _glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+
+				if (isMultisample) {
+					var _samples2 = getRenderTargetSamples(renderTarget);
+
+					_gl.renderbufferStorageMultisample(36161, _samples2, _glInternalFormat, renderTarget.width, renderTarget.height);
+				} else {
+					_gl.renderbufferStorage(36161, _glInternalFormat, renderTarget.width, renderTarget.height);
+				}
+			}
+
+			_gl.bindRenderbuffer(36161, null);
+		} // Setup resources for a Depth Texture for a FBO (needs an extension)
+
+
+		function setupDepthTexture(framebuffer, renderTarget) {
+			var isCube = renderTarget && renderTarget.isWebGLCubeRenderTarget;
+			if (isCube) throw new Error('Depth Texture with cube render targets is not supported');
+
+			_gl.bindFramebuffer(36160, framebuffer);
+
+			if (!(renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture)) {
+				throw new Error('renderTarget.depthTexture must be an instance of THREE.DepthTexture');
+			} // upload an empty depth texture with framebuffer size
+
+
+			if (!properties.get(renderTarget.depthTexture).__webglTexture || renderTarget.depthTexture.image.width !== renderTarget.width || renderTarget.depthTexture.image.height !== renderTarget.height) {
+				renderTarget.depthTexture.image.width = renderTarget.width;
+				renderTarget.depthTexture.image.height = renderTarget.height;
+				renderTarget.depthTexture.needsUpdate = true;
+			}
+
+			setTexture2D(renderTarget.depthTexture, 0);
+
+			var webglDepthTexture = properties.get(renderTarget.depthTexture).__webglTexture;
+
+			if (renderTarget.depthTexture.format === DepthFormat) {
+				_gl.framebufferTexture2D(36160, 36096, 3553, webglDepthTexture, 0);
+			} else if (renderTarget.depthTexture.format === DepthStencilFormat) {
+				_gl.framebufferTexture2D(36160, 33306, 3553, webglDepthTexture, 0);
+			} else {
+				throw new Error('Unknown depthTexture format');
+			}
+		} // Setup GL resources for a non-texture depth buffer
+
+
+		function setupDepthRenderbuffer(renderTarget) {
+			var renderTargetProperties = properties.get(renderTarget);
+			var isCube = renderTarget.isWebGLCubeRenderTarget === true;
+
+			if (renderTarget.depthTexture) {
+				if (isCube) throw new Error('target.depthTexture not supported in Cube render targets');
+				setupDepthTexture(renderTargetProperties.__webglFramebuffer, renderTarget);
+			} else {
+				if (isCube) {
+					renderTargetProperties.__webglDepthbuffer = [];
+
+					for (var i = 0; i < 6; i++) {
+						_gl.bindFramebuffer(36160, renderTargetProperties.__webglFramebuffer[i]);
+
+						renderTargetProperties.__webglDepthbuffer[i] = _gl.createRenderbuffer();
+						setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer[i], renderTarget, false);
+					}
+				} else {
+					_gl.bindFramebuffer(36160, renderTargetProperties.__webglFramebuffer);
+
+					renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
+					setupRenderBufferStorage(renderTargetProperties.__webglDepthbuffer, renderTarget, false);
+				}
+			}
+
+			_gl.bindFramebuffer(36160, null);
+		} // Set up GL resources for the render target
+
+
+		function setupRenderTarget(renderTarget) {
+			var texture = renderTarget.texture;
+			var renderTargetProperties = properties.get(renderTarget);
+			var textureProperties = properties.get(texture);
+			renderTarget.addEventListener('dispose', onRenderTargetDispose);
+			textureProperties.__webglTexture = _gl.createTexture();
+			info.memory.textures++;
+			var isCube = renderTarget.isWebGLCubeRenderTarget === true;
+			var isMultisample = renderTarget.isWebGLMultisampleRenderTarget === true;
+			var isRenderTarget3D = texture.isDataTexture3D || texture.isDataTexture2DArray;
+			var supportsMips = isPowerOfTwo(renderTarget) || isWebGL2; // Handles WebGL2 RGBFormat fallback - #18858
+
+			if (isWebGL2 && texture.format === RGBFormat && (texture.type === FloatType || texture.type === HalfFloatType)) {
+				texture.format = RGBAFormat;
+				console.warn('THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.');
+			} // Setup framebuffer
+
+
+			if (isCube) {
+				renderTargetProperties.__webglFramebuffer = [];
+
+				for (var i = 0; i < 6; i++) {
+					renderTargetProperties.__webglFramebuffer[i] = _gl.createFramebuffer();
+				}
+			} else {
+				renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
+
+				if (isMultisample) {
+					if (isWebGL2) {
+						renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
+						renderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer();
+
+						_gl.bindRenderbuffer(36161, renderTargetProperties.__webglColorRenderbuffer);
+
+						var glFormat = utils.convert(texture.format);
+						var glType = utils.convert(texture.type);
+						var glInternalFormat = getInternalFormat(texture.internalFormat, glFormat, glType);
+						var samples = getRenderTargetSamples(renderTarget);
+
+						_gl.renderbufferStorageMultisample(36161, samples, glInternalFormat, renderTarget.width, renderTarget.height);
+
+						_gl.bindFramebuffer(36160, renderTargetProperties.__webglMultisampledFramebuffer);
+
+						_gl.framebufferRenderbuffer(36160, 36064, 36161, renderTargetProperties.__webglColorRenderbuffer);
+
+						_gl.bindRenderbuffer(36161, null);
+
+						if (renderTarget.depthBuffer) {
+							renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
+							setupRenderBufferStorage(renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true);
+						}
+
+						_gl.bindFramebuffer(36160, null);
+					} else {
+						console.warn('THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.');
+					}
+				}
+			} // Setup color buffer
+
+
+			if (isCube) {
+				state.bindTexture(34067, textureProperties.__webglTexture);
+				setTextureParameters(34067, texture, supportsMips);
+
+				for (var _i5 = 0; _i5 < 6; _i5++) {
+					setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer[_i5], renderTarget, 36064, 34069 + _i5);
+				}
+
+				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+					generateMipmap(34067, texture, renderTarget.width, renderTarget.height);
+				}
+
+				state.bindTexture(34067, null);
+			} else {
+				var glTextureType = 3553;
+
+				if (isRenderTarget3D) {
+					// Render targets containing layers, i.e: Texture 3D and 2d arrays
+					if (isWebGL2) {
+						var isTexture3D = texture.isDataTexture3D;
+						glTextureType = isTexture3D ? 32879 : 35866;
+					} else {
+						console.warn('THREE.DataTexture3D and THREE.DataTexture2DArray only supported with WebGL2.');
+					}
+				}
+
+				state.bindTexture(glTextureType, textureProperties.__webglTexture);
+				setTextureParameters(glTextureType, texture, supportsMips);
+				setupFrameBufferTexture(renderTargetProperties.__webglFramebuffer, renderTarget, 36064, glTextureType);
+
+				if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+					generateMipmap(3553, texture, renderTarget.width, renderTarget.height);
+				}
+
+				state.bindTexture(3553, null);
+			} // Setup depth and stencil buffers
+
+
+			if (renderTarget.depthBuffer) {
+				setupDepthRenderbuffer(renderTarget);
+			}
+		}
+
+		function updateRenderTargetMipmap(renderTarget) {
+			var texture = renderTarget.texture;
+			var supportsMips = isPowerOfTwo(renderTarget) || isWebGL2;
+
+			if (textureNeedsGenerateMipmaps(texture, supportsMips)) {
+				var target = renderTarget.isWebGLCubeRenderTarget ? 34067 : 3553;
+
+				var webglTexture = properties.get(texture).__webglTexture;
+
+				state.bindTexture(target, webglTexture);
+				generateMipmap(target, texture, renderTarget.width, renderTarget.height);
+				state.bindTexture(target, null);
+			}
+		}
+
+		function updateMultisampleRenderTarget(renderTarget) {
+			if (renderTarget.isWebGLMultisampleRenderTarget) {
+				if (isWebGL2) {
+					var renderTargetProperties = properties.get(renderTarget);
+
+					_gl.bindFramebuffer(36008, renderTargetProperties.__webglMultisampledFramebuffer);
+
+					_gl.bindFramebuffer(36009, renderTargetProperties.__webglFramebuffer);
+
+					var width = renderTarget.width;
+					var height = renderTarget.height;
+					var mask = 16384;
+					if (renderTarget.depthBuffer) mask |= 256;
+					if (renderTarget.stencilBuffer) mask |= 1024;
+
+					_gl.blitFramebuffer(0, 0, width, height, 0, 0, width, height, mask, 9728);
+
+					_gl.bindFramebuffer(36160, renderTargetProperties.__webglMultisampledFramebuffer); // see #18905
+
+				} else {
+					console.warn('THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.');
+				}
+			}
+		}
+
+		function getRenderTargetSamples(renderTarget) {
+			return isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ? Math.min(maxSamples, renderTarget.samples) : 0;
+		}
+
+		function updateVideoTexture(texture) {
+			var frame = info.render.frame; // Check the last frame we updated the VideoTexture
+
+			if (_videoTextures.get(texture) !== frame) {
+				_videoTextures.set(texture, frame);
+
+				texture.update();
+			}
+		} // backwards compatibility
+
+
+		var warnedTexture2D = false;
+		var warnedTextureCube = false;
+
+		function safeSetTexture2D(texture, slot) {
+			if (texture && texture.isWebGLRenderTarget) {
+				if (warnedTexture2D === false) {
+					console.warn('THREE.WebGLTextures.safeSetTexture2D: don\'t use render targets as textures. Use their .texture property instead.');
+					warnedTexture2D = true;
+				}
+
+				texture = texture.texture;
+			}
+
+			setTexture2D(texture, slot);
+		}
+
+		function safeSetTextureCube(texture, slot) {
+			if (texture && texture.isWebGLCubeRenderTarget) {
+				if (warnedTextureCube === false) {
+					console.warn('THREE.WebGLTextures.safeSetTextureCube: don\'t use cube render targets as textures. Use their .texture property instead.');
+					warnedTextureCube = true;
+				}
+
+				texture = texture.texture;
+			}
+
+			setTextureCube(texture, slot);
+		} //
+
+
+		this.allocateTextureUnit = allocateTextureUnit;
+		this.resetTextureUnits = resetTextureUnits;
+		this.setTexture2D = setTexture2D;
+		this.setTexture2DArray = setTexture2DArray;
+		this.setTexture3D = setTexture3D;
+		this.setTextureCube = setTextureCube;
+		this.setupRenderTarget = setupRenderTarget;
+		this.updateRenderTargetMipmap = updateRenderTargetMipmap;
+		this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
+		this.safeSetTexture2D = safeSetTexture2D;
+		this.safeSetTextureCube = safeSetTextureCube;
+	}
+
+	function WebGLUtils(gl, extensions, capabilities) {
+		var isWebGL2 = capabilities.isWebGL2;
+
+		function convert(p) {
+			var extension;
+			if (p === UnsignedByteType) return 5121;
+			if (p === UnsignedShort4444Type) return 32819;
+			if (p === UnsignedShort5551Type) return 32820;
+			if (p === UnsignedShort565Type) return 33635;
+			if (p === ByteType) return 5120;
+			if (p === ShortType) return 5122;
+			if (p === UnsignedShortType) return 5123;
+			if (p === IntType) return 5124;
+			if (p === UnsignedIntType) return 5125;
+			if (p === FloatType) return 5126;
+
+			if (p === HalfFloatType) {
+				if (isWebGL2) return 5131;
+				extension = extensions.get('OES_texture_half_float');
+
+				if (extension !== null) {
+					return extension.HALF_FLOAT_OES;
+				} else {
+					return null;
+				}
+			}
+
+			if (p === AlphaFormat) return 6406;
+			if (p === RGBFormat) return 6407;
+			if (p === RGBAFormat) return 6408;
+			if (p === LuminanceFormat) return 6409;
+			if (p === LuminanceAlphaFormat) return 6410;
+			if (p === DepthFormat) return 6402;
+			if (p === DepthStencilFormat) return 34041;
+			if (p === RedFormat) return 6403; // WebGL2 formats.
+
+			if (p === RedIntegerFormat) return 36244;
+			if (p === RGFormat) return 33319;
+			if (p === RGIntegerFormat) return 33320;
+			if (p === RGBIntegerFormat) return 36248;
+			if (p === RGBAIntegerFormat) return 36249;
+
+			if (p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_s3tc');
+
+				if (extension !== null) {
+					if (p === RGB_S3TC_DXT1_Format) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
+					if (p === RGBA_S3TC_DXT1_Format) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
+					if (p === RGBA_S3TC_DXT3_Format) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
+					if (p === RGBA_S3TC_DXT5_Format) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
+				} else {
+					return null;
+				}
+			}
+
+			if (p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_pvrtc');
+
+				if (extension !== null) {
+					if (p === RGB_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
+					if (p === RGB_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
+					if (p === RGBA_PVRTC_4BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
+					if (p === RGBA_PVRTC_2BPPV1_Format) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
+				} else {
+					return null;
+				}
+			}
+
+			if (p === RGB_ETC1_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_etc1');
+
+				if (extension !== null) {
+					return extension.COMPRESSED_RGB_ETC1_WEBGL;
+				} else {
+					return null;
+				}
+			}
+
+			if (p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_etc');
+
+				if (extension !== null) {
+					if (p === RGB_ETC2_Format) return extension.COMPRESSED_RGB8_ETC2;
+					if (p === RGBA_ETC2_EAC_Format) return extension.COMPRESSED_RGBA8_ETC2_EAC;
+				}
+			}
+
+			if (p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format || p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format || p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format || p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format || p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format || p === SRGB8_ALPHA8_ASTC_4x4_Format || p === SRGB8_ALPHA8_ASTC_5x4_Format || p === SRGB8_ALPHA8_ASTC_5x5_Format || p === SRGB8_ALPHA8_ASTC_6x5_Format || p === SRGB8_ALPHA8_ASTC_6x6_Format || p === SRGB8_ALPHA8_ASTC_8x5_Format || p === SRGB8_ALPHA8_ASTC_8x6_Format || p === SRGB8_ALPHA8_ASTC_8x8_Format || p === SRGB8_ALPHA8_ASTC_10x5_Format || p === SRGB8_ALPHA8_ASTC_10x6_Format || p === SRGB8_ALPHA8_ASTC_10x8_Format || p === SRGB8_ALPHA8_ASTC_10x10_Format || p === SRGB8_ALPHA8_ASTC_12x10_Format || p === SRGB8_ALPHA8_ASTC_12x12_Format) {
+				extension = extensions.get('WEBGL_compressed_texture_astc');
+
+				if (extension !== null) {
+					// TODO Complete?
+					return p;
+				} else {
+					return null;
+				}
+			}
+
+			if (p === RGBA_BPTC_Format) {
+				extension = extensions.get('EXT_texture_compression_bptc');
+
+				if (extension !== null) {
+					// TODO Complete?
+					return p;
+				} else {
+					return null;
+				}
+			}
+
+			if (p === UnsignedInt248Type) {
+				if (isWebGL2) return 34042;
+				extension = extensions.get('WEBGL_depth_texture');
+
+				if (extension !== null) {
+					return extension.UNSIGNED_INT_24_8_WEBGL;
+				} else {
+					return null;
+				}
+			}
+		}
+
+		return {
+			convert: convert
+		};
+	}
+
+	function ArrayCamera(array) {
+		if (array === void 0) {
+			array = [];
+		}
+
+		PerspectiveCamera.call(this);
+		this.cameras = array;
+	}
+
+	ArrayCamera.prototype = Object.assign(Object.create(PerspectiveCamera.prototype), {
+		constructor: ArrayCamera,
+		isArrayCamera: true
+	});
+
+	var Group = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(Group, _Object3D);
+
+		function Group() {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'Group';
+			return _this;
+		}
+
+		return Group;
+	}(Object3D);
+
+	Group.prototype.isGroup = true;
+
+	function WebXRController() {
+		this._targetRay = null;
+		this._grip = null;
+		this._hand = null;
+	}
+
+	Object.assign(WebXRController.prototype, {
+		constructor: WebXRController,
+		getHandSpace: function getHandSpace() {
+			if (this._hand === null) {
+				this._hand = new Group();
+				this._hand.matrixAutoUpdate = false;
+				this._hand.visible = false;
+				this._hand.joints = {};
+				this._hand.inputState = {
+					pinching: false
+				};
+			}
+
+			return this._hand;
+		},
+		getTargetRaySpace: function getTargetRaySpace() {
+			if (this._targetRay === null) {
+				this._targetRay = new Group();
+				this._targetRay.matrixAutoUpdate = false;
+				this._targetRay.visible = false;
+			}
+
+			return this._targetRay;
+		},
+		getGripSpace: function getGripSpace() {
+			if (this._grip === null) {
+				this._grip = new Group();
+				this._grip.matrixAutoUpdate = false;
+				this._grip.visible = false;
+			}
+
+			return this._grip;
+		},
+		dispatchEvent: function dispatchEvent(event) {
+			if (this._targetRay !== null) {
+				this._targetRay.dispatchEvent(event);
+			}
+
+			if (this._grip !== null) {
+				this._grip.dispatchEvent(event);
+			}
+
+			if (this._hand !== null) {
+				this._hand.dispatchEvent(event);
+			}
+
+			return this;
+		},
+		disconnect: function disconnect(inputSource) {
+			this.dispatchEvent({
+				type: 'disconnected',
+				data: inputSource
+			});
+
+			if (this._targetRay !== null) {
+				this._targetRay.visible = false;
+			}
+
+			if (this._grip !== null) {
+				this._grip.visible = false;
+			}
+
+			if (this._hand !== null) {
+				this._hand.visible = false;
+			}
+
+			return this;
+		},
+		update: function update(inputSource, frame, referenceSpace) {
+			var inputPose = null;
+			var gripPose = null;
+			var handPose = null;
+			var targetRay = this._targetRay;
+			var grip = this._grip;
+			var hand = this._hand;
+
+			if (inputSource && frame.session.visibilityState !== 'visible-blurred') {
+				if (hand && inputSource.hand) {
+					handPose = true;
+
+					for (var _iterator = _createForOfIteratorHelperLoose(inputSource.hand.values()), _step; !(_step = _iterator()).done;) {
+						var inputjoint = _step.value;
+						// Update the joints groups with the XRJoint poses
+						var jointPose = frame.getJointPose(inputjoint, referenceSpace);
+
+						if (hand.joints[inputjoint.jointName] === undefined) {
+							// The transform of this joint will be updated with the joint pose on each frame
+							var _joint = new Group();
+
+							_joint.matrixAutoUpdate = false;
+							_joint.visible = false;
+							hand.joints[inputjoint.jointName] = _joint; // ??
+
+							hand.add(_joint);
+						}
+
+						var joint = hand.joints[inputjoint.jointName];
+
+						if (jointPose !== null) {
+							joint.matrix.fromArray(jointPose.transform.matrix);
+							joint.matrix.decompose(joint.position, joint.rotation, joint.scale);
+							joint.jointRadius = jointPose.radius;
+						}
+
+						joint.visible = jointPose !== null;
+					} // Custom events
+					// Check pinchz
+
+
+					var indexTip = hand.joints['index-finger-tip'];
+					var thumbTip = hand.joints['thumb-tip'];
+					var distance = indexTip.position.distanceTo(thumbTip.position);
+					var distanceToPinch = 0.02;
+					var threshold = 0.005;
+
+					if (hand.inputState.pinching && distance > distanceToPinch + threshold) {
+						hand.inputState.pinching = false;
+						this.dispatchEvent({
+							type: 'pinchend',
+							handedness: inputSource.handedness,
+							target: this
+						});
+					} else if (!hand.inputState.pinching && distance <= distanceToPinch - threshold) {
+						hand.inputState.pinching = true;
+						this.dispatchEvent({
+							type: 'pinchstart',
+							handedness: inputSource.handedness,
+							target: this
+						});
+					}
+				} else {
+					if (targetRay !== null) {
+						inputPose = frame.getPose(inputSource.targetRaySpace, referenceSpace);
+
+						if (inputPose !== null) {
+							targetRay.matrix.fromArray(inputPose.transform.matrix);
+							targetRay.matrix.decompose(targetRay.position, targetRay.rotation, targetRay.scale);
+						}
+					}
+
+					if (grip !== null && inputSource.gripSpace) {
+						gripPose = frame.getPose(inputSource.gripSpace, referenceSpace);
+
+						if (gripPose !== null) {
+							grip.matrix.fromArray(gripPose.transform.matrix);
+							grip.matrix.decompose(grip.position, grip.rotation, grip.scale);
+						}
+					}
+				}
+			}
+
+			if (targetRay !== null) {
+				targetRay.visible = inputPose !== null;
+			}
+
+			if (grip !== null) {
+				grip.visible = gripPose !== null;
+			}
+
+			if (hand !== null) {
+				hand.visible = handPose !== null;
+			}
+
+			return this;
+		}
+	});
+
+	function WebXRManager(renderer, gl) {
+		var scope = this;
+		var session = null;
+		var framebufferScaleFactor = 1.0;
+		var referenceSpace = null;
+		var referenceSpaceType = 'local-floor';
+		var pose = null;
+		var controllers = [];
+		var inputSourcesMap = new Map(); //
+
+		var cameraL = new PerspectiveCamera();
+		cameraL.layers.enable(1);
+		cameraL.viewport = new Vector4();
+		var cameraR = new PerspectiveCamera();
+		cameraR.layers.enable(2);
+		cameraR.viewport = new Vector4();
+		var cameras = [cameraL, cameraR];
+		var cameraVR = new ArrayCamera();
+		cameraVR.layers.enable(1);
+		cameraVR.layers.enable(2);
+		var _currentDepthNear = null;
+		var _currentDepthFar = null; //
+
+		this.enabled = false;
+		this.isPresenting = false;
+
+		this.getController = function (index) {
+			var controller = controllers[index];
+
+			if (controller === undefined) {
+				controller = new WebXRController();
+				controllers[index] = controller;
+			}
+
+			return controller.getTargetRaySpace();
+		};
+
+		this.getControllerGrip = function (index) {
+			var controller = controllers[index];
+
+			if (controller === undefined) {
+				controller = new WebXRController();
+				controllers[index] = controller;
+			}
+
+			return controller.getGripSpace();
+		};
+
+		this.getHand = function (index) {
+			var controller = controllers[index];
+
+			if (controller === undefined) {
+				controller = new WebXRController();
+				controllers[index] = controller;
+			}
+
+			return controller.getHandSpace();
+		}; //
+
+
+		function onSessionEvent(event) {
+			var controller = inputSourcesMap.get(event.inputSource);
+
+			if (controller) {
+				controller.dispatchEvent({
+					type: event.type,
+					data: event.inputSource
+				});
+			}
+		}
+
+		function onSessionEnd() {
+			inputSourcesMap.forEach(function (controller, inputSource) {
+				controller.disconnect(inputSource);
+			});
+			inputSourcesMap.clear();
+			_currentDepthNear = null;
+			_currentDepthFar = null; //
+
+			renderer.setFramebuffer(null);
+			renderer.setRenderTarget(renderer.getRenderTarget()); // Hack #15830
+
+			animation.stop();
+			scope.isPresenting = false;
+			scope.dispatchEvent({
+				type: 'sessionend'
+			});
+		}
+
+		this.setFramebufferScaleFactor = function (value) {
+			framebufferScaleFactor = value;
+
+			if (scope.isPresenting === true) {
+				console.warn('THREE.WebXRManager: Cannot change framebuffer scale while presenting.');
+			}
+		};
+
+		this.setReferenceSpaceType = function (value) {
+			referenceSpaceType = value;
+
+			if (scope.isPresenting === true) {
+				console.warn('THREE.WebXRManager: Cannot change reference space type while presenting.');
+			}
+		};
+
+		this.getReferenceSpace = function () {
+			return referenceSpace;
+		};
+
+		this.getSession = function () {
+			return session;
+		};
+
+		this.setSession = /*#__PURE__*/function () {
+			var _ref = _asyncToGenerator( /*#__PURE__*/regeneratorRuntime.mark(function _callee(value) {
+				var attributes, layerInit, baseLayer;
+				return regeneratorRuntime.wrap(function _callee$(_context) {
+					while (1) {
+						switch (_context.prev = _context.next) {
+							case 0:
+								session = value;
+
+								if (!(session !== null)) {
+									_context.next = 24;
+									break;
+								}
+
+								session.addEventListener('select', onSessionEvent);
+								session.addEventListener('selectstart', onSessionEvent);
+								session.addEventListener('selectend', onSessionEvent);
+								session.addEventListener('squeeze', onSessionEvent);
+								session.addEventListener('squeezestart', onSessionEvent);
+								session.addEventListener('squeezeend', onSessionEvent);
+								session.addEventListener('end', onSessionEnd);
+								session.addEventListener('inputsourceschange', onInputSourcesChange);
+								attributes = gl.getContextAttributes();
+
+								if (!(attributes.xrCompatible !== true)) {
+									_context.next = 14;
+									break;
+								}
+
+								_context.next = 14;
+								return gl.makeXRCompatible();
+
+							case 14:
+								layerInit = {
+									antialias: attributes.antialias,
+									alpha: attributes.alpha,
+									depth: attributes.depth,
+									stencil: attributes.stencil,
+									framebufferScaleFactor: framebufferScaleFactor
+								}; // eslint-disable-next-line no-undef
+
+								baseLayer = new XRWebGLLayer(session, gl, layerInit);
+								session.updateRenderState({
+									baseLayer: baseLayer
+								});
+								_context.next = 19;
+								return session.requestReferenceSpace(referenceSpaceType);
+
+							case 19:
+								referenceSpace = _context.sent;
+								animation.setContext(session);
+								animation.start();
+								scope.isPresenting = true;
+								scope.dispatchEvent({
+									type: 'sessionstart'
+								});
+
+							case 24:
+							case "end":
+								return _context.stop();
+						}
+					}
+				}, _callee);
+			}));
+
+			return function (_x) {
+				return _ref.apply(this, arguments);
+			};
+		}();
+
+		function onInputSourcesChange(event) {
+			var inputSources = session.inputSources; // Assign inputSources to available controllers
+
+			for (var i = 0; i < controllers.length; i++) {
+				inputSourcesMap.set(inputSources[i], controllers[i]);
+			} // Notify disconnected
+
+
+			for (var _i = 0; _i < event.removed.length; _i++) {
+				var inputSource = event.removed[_i];
+				var controller = inputSourcesMap.get(inputSource);
+
+				if (controller) {
+					controller.dispatchEvent({
+						type: 'disconnected',
+						data: inputSource
+					});
+					inputSourcesMap.delete(inputSource);
+				}
+			} // Notify connected
+
+
+			for (var _i2 = 0; _i2 < event.added.length; _i2++) {
+				var _inputSource = event.added[_i2];
+
+				var _controller = inputSourcesMap.get(_inputSource);
+
+				if (_controller) {
+					_controller.dispatchEvent({
+						type: 'connected',
+						data: _inputSource
+					});
+				}
+			}
+		} //
+
+
+		var cameraLPos = new Vector3();
+		var cameraRPos = new Vector3();
+		/**
+		 * Assumes 2 cameras that are parallel and share an X-axis, and that
+		 * the cameras' projection and world matrices have already been set.
+		 * And that near and far planes are identical for both cameras.
+		 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
+		 */
+
+		function setProjectionFromUnion(camera, cameraL, cameraR) {
+			cameraLPos.setFromMatrixPosition(cameraL.matrixWorld);
+			cameraRPos.setFromMatrixPosition(cameraR.matrixWorld);
+			var ipd = cameraLPos.distanceTo(cameraRPos);
+			var projL = cameraL.projectionMatrix.elements;
+			var projR = cameraR.projectionMatrix.elements; // VR systems will have identical far and near planes, and
+			// most likely identical top and bottom frustum extents.
+			// Use the left camera for these values.
+
+			var near = projL[14] / (projL[10] - 1);
+			var far = projL[14] / (projL[10] + 1);
+			var topFov = (projL[9] + 1) / projL[5];
+			var bottomFov = (projL[9] - 1) / projL[5];
+			var leftFov = (projL[8] - 1) / projL[0];
+			var rightFov = (projR[8] + 1) / projR[0];
+			var left = near * leftFov;
+			var right = near * rightFov; // Calculate the new camera's position offset from the
+			// left camera. xOffset should be roughly half `ipd`.
+
+			var zOffset = ipd / (-leftFov + rightFov);
+			var xOffset = zOffset * -leftFov; // TODO: Better way to apply this offset?
+
+			cameraL.matrixWorld.decompose(camera.position, camera.quaternion, camera.scale);
+			camera.translateX(xOffset);
+			camera.translateZ(zOffset);
+			camera.matrixWorld.compose(camera.position, camera.quaternion, camera.scale);
+			camera.matrixWorldInverse.copy(camera.matrixWorld).invert(); // Find the union of the frustum values of the cameras and scale
+			// the values so that the near plane's position does not change in world space,
+			// although must now be relative to the new union camera.
+
+			var near2 = near + zOffset;
+			var far2 = far + zOffset;
+			var left2 = left - xOffset;
+			var right2 = right + (ipd - xOffset);
+			var top2 = topFov * far / far2 * near2;
+			var bottom2 = bottomFov * far / far2 * near2;
+			camera.projectionMatrix.makePerspective(left2, right2, top2, bottom2, near2, far2);
+		}
+
+		function updateCamera(camera, parent) {
+			if (parent === null) {
+				camera.matrixWorld.copy(camera.matrix);
+			} else {
+				camera.matrixWorld.multiplyMatrices(parent.matrixWorld, camera.matrix);
+			}
+
+			camera.matrixWorldInverse.copy(camera.matrixWorld).invert();
+		}
+
+		this.getCamera = function (camera) {
+			cameraVR.near = cameraR.near = cameraL.near = camera.near;
+			cameraVR.far = cameraR.far = cameraL.far = camera.far;
+
+			if (_currentDepthNear !== cameraVR.near || _currentDepthFar !== cameraVR.far) {
+				// Note that the new renderState won't apply until the next frame. See #18320
+				session.updateRenderState({
+					depthNear: cameraVR.near,
+					depthFar: cameraVR.far
+				});
+				_currentDepthNear = cameraVR.near;
+				_currentDepthFar = cameraVR.far;
+			}
+
+			var parent = camera.parent;
+			var cameras = cameraVR.cameras;
+			updateCamera(cameraVR, parent);
+
+			for (var i = 0; i < cameras.length; i++) {
+				updateCamera(cameras[i], parent);
+			} // update camera and its children
+
+
+			camera.matrixWorld.copy(cameraVR.matrixWorld);
+			camera.matrix.copy(cameraVR.matrix);
+			camera.matrix.decompose(camera.position, camera.quaternion, camera.scale);
+			var children = camera.children;
+
+			for (var _i3 = 0, l = children.length; _i3 < l; _i3++) {
+				children[_i3].updateMatrixWorld(true);
+			} // update projection matrix for proper view frustum culling
+
+
+			if (cameras.length === 2) {
+				setProjectionFromUnion(cameraVR, cameraL, cameraR);
+			} else {
+				// assume single camera setup (AR)
+				cameraVR.projectionMatrix.copy(cameraL.projectionMatrix);
+			}
+
+			return cameraVR;
+		}; // Animation Loop
+
+
+		var onAnimationFrameCallback = null;
+
+		function onAnimationFrame(time, frame) {
+			pose = frame.getViewerPose(referenceSpace);
+
+			if (pose !== null) {
+				var views = pose.views;
+				var baseLayer = session.renderState.baseLayer;
+				renderer.setFramebuffer(baseLayer.framebuffer);
+				var cameraVRNeedsUpdate = false; // check if it's necessary to rebuild cameraVR's camera list
+
+				if (views.length !== cameraVR.cameras.length) {
+					cameraVR.cameras.length = 0;
+					cameraVRNeedsUpdate = true;
+				}
+
+				for (var i = 0; i < views.length; i++) {
+					var view = views[i];
+					var viewport = baseLayer.getViewport(view);
+					var camera = cameras[i];
+					camera.matrix.fromArray(view.transform.matrix);
+					camera.projectionMatrix.fromArray(view.projectionMatrix);
+					camera.viewport.set(viewport.x, viewport.y, viewport.width, viewport.height);
+
+					if (i === 0) {
+						cameraVR.matrix.copy(camera.matrix);
+					}
+
+					if (cameraVRNeedsUpdate === true) {
+						cameraVR.cameras.push(camera);
+					}
+				}
+			} //
+
+
+			var inputSources = session.inputSources;
+
+			for (var _i4 = 0; _i4 < controllers.length; _i4++) {
+				var controller = controllers[_i4];
+				var inputSource = inputSources[_i4];
+				controller.update(inputSource, frame, referenceSpace);
+			}
+
+			if (onAnimationFrameCallback) onAnimationFrameCallback(time, frame);
+		}
+
+		var animation = new WebGLAnimation();
+		animation.setAnimationLoop(onAnimationFrame);
+
+		this.setAnimationLoop = function (callback) {
+			onAnimationFrameCallback = callback;
+		};
+
+		this.dispose = function () {};
+	}
+
+	Object.assign(WebXRManager.prototype, EventDispatcher.prototype);
+
+	function WebGLMaterials(properties) {
+		function refreshFogUniforms(uniforms, fog) {
+			uniforms.fogColor.value.copy(fog.color);
+
+			if (fog.isFog) {
+				uniforms.fogNear.value = fog.near;
+				uniforms.fogFar.value = fog.far;
+			} else if (fog.isFogExp2) {
+				uniforms.fogDensity.value = fog.density;
+			}
+		}
+
+		function refreshMaterialUniforms(uniforms, material, pixelRatio, height) {
+			if (material.isMeshBasicMaterial) {
+				refreshUniformsCommon(uniforms, material);
+			} else if (material.isMeshLambertMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsLambert(uniforms, material);
+			} else if (material.isMeshToonMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsToon(uniforms, material);
+			} else if (material.isMeshPhongMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsPhong(uniforms, material);
+			} else if (material.isMeshStandardMaterial) {
+				refreshUniformsCommon(uniforms, material);
+
+				if (material.isMeshPhysicalMaterial) {
+					refreshUniformsPhysical(uniforms, material);
+				} else {
+					refreshUniformsStandard(uniforms, material);
+				}
+			} else if (material.isMeshMatcapMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsMatcap(uniforms, material);
+			} else if (material.isMeshDepthMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsDepth(uniforms, material);
+			} else if (material.isMeshDistanceMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsDistance(uniforms, material);
+			} else if (material.isMeshNormalMaterial) {
+				refreshUniformsCommon(uniforms, material);
+				refreshUniformsNormal(uniforms, material);
+			} else if (material.isLineBasicMaterial) {
+				refreshUniformsLine(uniforms, material);
+
+				if (material.isLineDashedMaterial) {
+					refreshUniformsDash(uniforms, material);
+				}
+			} else if (material.isPointsMaterial) {
+				refreshUniformsPoints(uniforms, material, pixelRatio, height);
+			} else if (material.isSpriteMaterial) {
+				refreshUniformsSprites(uniforms, material);
+			} else if (material.isShadowMaterial) {
+				uniforms.color.value.copy(material.color);
+				uniforms.opacity.value = material.opacity;
+			} else if (material.isShaderMaterial) {
+				material.uniformsNeedUpdate = false; // #15581
+			}
+		}
+
+		function refreshUniformsCommon(uniforms, material) {
+			uniforms.opacity.value = material.opacity;
+
+			if (material.color) {
+				uniforms.diffuse.value.copy(material.color);
+			}
+
+			if (material.emissive) {
+				uniforms.emissive.value.copy(material.emissive).multiplyScalar(material.emissiveIntensity);
+			}
+
+			if (material.map) {
+				uniforms.map.value = material.map;
+			}
+
+			if (material.alphaMap) {
+				uniforms.alphaMap.value = material.alphaMap;
+			}
+
+			if (material.specularMap) {
+				uniforms.specularMap.value = material.specularMap;
+			}
+
+			var envMap = properties.get(material).envMap;
+
+			if (envMap) {
+				uniforms.envMap.value = envMap;
+				uniforms.flipEnvMap.value = envMap.isCubeTexture && envMap._needsFlipEnvMap ? -1 : 1;
+				uniforms.reflectivity.value = material.reflectivity;
+				uniforms.refractionRatio.value = material.refractionRatio;
+
+				var maxMipLevel = properties.get(envMap).__maxMipLevel;
+
+				if (maxMipLevel !== undefined) {
+					uniforms.maxMipLevel.value = maxMipLevel;
+				}
+			}
+
+			if (material.lightMap) {
+				uniforms.lightMap.value = material.lightMap;
+				uniforms.lightMapIntensity.value = material.lightMapIntensity;
+			}
+
+			if (material.aoMap) {
+				uniforms.aoMap.value = material.aoMap;
+				uniforms.aoMapIntensity.value = material.aoMapIntensity;
+			} // uv repeat and offset setting priorities
+			// 1. color map
+			// 2. specular map
+			// 3. displacementMap map
+			// 4. normal map
+			// 5. bump map
+			// 6. roughnessMap map
+			// 7. metalnessMap map
+			// 8. alphaMap map
+			// 9. emissiveMap map
+			// 10. clearcoat map
+			// 11. clearcoat normal map
+			// 12. clearcoat roughnessMap map
+
+
+			var uvScaleMap;
+
+			if (material.map) {
+				uvScaleMap = material.map;
+			} else if (material.specularMap) {
+				uvScaleMap = material.specularMap;
+			} else if (material.displacementMap) {
+				uvScaleMap = material.displacementMap;
+			} else if (material.normalMap) {
+				uvScaleMap = material.normalMap;
+			} else if (material.bumpMap) {
+				uvScaleMap = material.bumpMap;
+			} else if (material.roughnessMap) {
+				uvScaleMap = material.roughnessMap;
+			} else if (material.metalnessMap) {
+				uvScaleMap = material.metalnessMap;
+			} else if (material.alphaMap) {
+				uvScaleMap = material.alphaMap;
+			} else if (material.emissiveMap) {
+				uvScaleMap = material.emissiveMap;
+			} else if (material.clearcoatMap) {
+				uvScaleMap = material.clearcoatMap;
+			} else if (material.clearcoatNormalMap) {
+				uvScaleMap = material.clearcoatNormalMap;
+			} else if (material.clearcoatRoughnessMap) {
+				uvScaleMap = material.clearcoatRoughnessMap;
+			}
+
+			if (uvScaleMap !== undefined) {
+				// backwards compatibility
+				if (uvScaleMap.isWebGLRenderTarget) {
+					uvScaleMap = uvScaleMap.texture;
+				}
+
+				if (uvScaleMap.matrixAutoUpdate === true) {
+					uvScaleMap.updateMatrix();
+				}
+
+				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
+			} // uv repeat and offset setting priorities for uv2
+			// 1. ao map
+			// 2. light map
+
+
+			var uv2ScaleMap;
+
+			if (material.aoMap) {
+				uv2ScaleMap = material.aoMap;
+			} else if (material.lightMap) {
+				uv2ScaleMap = material.lightMap;
+			}
+
+			if (uv2ScaleMap !== undefined) {
+				// backwards compatibility
+				if (uv2ScaleMap.isWebGLRenderTarget) {
+					uv2ScaleMap = uv2ScaleMap.texture;
+				}
+
+				if (uv2ScaleMap.matrixAutoUpdate === true) {
+					uv2ScaleMap.updateMatrix();
+				}
+
+				uniforms.uv2Transform.value.copy(uv2ScaleMap.matrix);
+			}
+		}
+
+		function refreshUniformsLine(uniforms, material) {
+			uniforms.diffuse.value.copy(material.color);
+			uniforms.opacity.value = material.opacity;
+		}
+
+		function refreshUniformsDash(uniforms, material) {
+			uniforms.dashSize.value = material.dashSize;
+			uniforms.totalSize.value = material.dashSize + material.gapSize;
+			uniforms.scale.value = material.scale;
+		}
+
+		function refreshUniformsPoints(uniforms, material, pixelRatio, height) {
+			uniforms.diffuse.value.copy(material.color);
+			uniforms.opacity.value = material.opacity;
+			uniforms.size.value = material.size * pixelRatio;
+			uniforms.scale.value = height * 0.5;
+
+			if (material.map) {
+				uniforms.map.value = material.map;
+			}
+
+			if (material.alphaMap) {
+				uniforms.alphaMap.value = material.alphaMap;
+			} // uv repeat and offset setting priorities
+			// 1. color map
+			// 2. alpha map
+
+
+			var uvScaleMap;
+
+			if (material.map) {
+				uvScaleMap = material.map;
+			} else if (material.alphaMap) {
+				uvScaleMap = material.alphaMap;
+			}
+
+			if (uvScaleMap !== undefined) {
+				if (uvScaleMap.matrixAutoUpdate === true) {
+					uvScaleMap.updateMatrix();
+				}
+
+				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
+			}
+		}
+
+		function refreshUniformsSprites(uniforms, material) {
+			uniforms.diffuse.value.copy(material.color);
+			uniforms.opacity.value = material.opacity;
+			uniforms.rotation.value = material.rotation;
+
+			if (material.map) {
+				uniforms.map.value = material.map;
+			}
+
+			if (material.alphaMap) {
+				uniforms.alphaMap.value = material.alphaMap;
+			} // uv repeat and offset setting priorities
+			// 1. color map
+			// 2. alpha map
+
+
+			var uvScaleMap;
+
+			if (material.map) {
+				uvScaleMap = material.map;
+			} else if (material.alphaMap) {
+				uvScaleMap = material.alphaMap;
+			}
+
+			if (uvScaleMap !== undefined) {
+				if (uvScaleMap.matrixAutoUpdate === true) {
+					uvScaleMap.updateMatrix();
+				}
+
+				uniforms.uvTransform.value.copy(uvScaleMap.matrix);
+			}
+		}
+
+		function refreshUniformsLambert(uniforms, material) {
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
+		}
+
+		function refreshUniformsPhong(uniforms, material) {
+			uniforms.specular.value.copy(material.specular);
+			uniforms.shininess.value = Math.max(material.shininess, 1e-4); // to prevent pow( 0.0, 0.0 )
+
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
+
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
+
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
+
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
+
+		function refreshUniformsToon(uniforms, material) {
+			if (material.gradientMap) {
+				uniforms.gradientMap.value = material.gradientMap;
+			}
+
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
+
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
+
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
+
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
+
+		function refreshUniformsStandard(uniforms, material) {
+			uniforms.roughness.value = material.roughness;
+			uniforms.metalness.value = material.metalness;
+
+			if (material.roughnessMap) {
+				uniforms.roughnessMap.value = material.roughnessMap;
+			}
+
+			if (material.metalnessMap) {
+				uniforms.metalnessMap.value = material.metalnessMap;
+			}
+
+			if (material.emissiveMap) {
+				uniforms.emissiveMap.value = material.emissiveMap;
+			}
+
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
+
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
+
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+
+			var envMap = properties.get(material).envMap;
+
+			if (envMap) {
+				//uniforms.envMap.value = material.envMap; // part of uniforms common
+				uniforms.envMapIntensity.value = material.envMapIntensity;
+			}
+		}
+
+		function refreshUniformsPhysical(uniforms, material) {
+			refreshUniformsStandard(uniforms, material);
+			uniforms.reflectivity.value = material.reflectivity; // also part of uniforms common
+
+			uniforms.clearcoat.value = material.clearcoat;
+			uniforms.clearcoatRoughness.value = material.clearcoatRoughness;
+			if (material.sheen) uniforms.sheen.value.copy(material.sheen);
+
+			if (material.clearcoatMap) {
+				uniforms.clearcoatMap.value = material.clearcoatMap;
+			}
+
+			if (material.clearcoatRoughnessMap) {
+				uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;
+			}
+
+			if (material.clearcoatNormalMap) {
+				uniforms.clearcoatNormalScale.value.copy(material.clearcoatNormalScale);
+				uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;
+
+				if (material.side === BackSide) {
+					uniforms.clearcoatNormalScale.value.negate();
+				}
+			}
+
+			uniforms.transmission.value = material.transmission;
+
+			if (material.transmissionMap) {
+				uniforms.transmissionMap.value = material.transmissionMap;
+			}
+		}
+
+		function refreshUniformsMatcap(uniforms, material) {
+			if (material.matcap) {
+				uniforms.matcap.value = material.matcap;
+			}
+
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
+
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
+
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
+
+		function refreshUniformsDepth(uniforms, material) {
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
+
+		function refreshUniformsDistance(uniforms, material) {
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+
+			uniforms.referencePosition.value.copy(material.referencePosition);
+			uniforms.nearDistance.value = material.nearDistance;
+			uniforms.farDistance.value = material.farDistance;
+		}
+
+		function refreshUniformsNormal(uniforms, material) {
+			if (material.bumpMap) {
+				uniforms.bumpMap.value = material.bumpMap;
+				uniforms.bumpScale.value = material.bumpScale;
+				if (material.side === BackSide) uniforms.bumpScale.value *= -1;
+			}
+
+			if (material.normalMap) {
+				uniforms.normalMap.value = material.normalMap;
+				uniforms.normalScale.value.copy(material.normalScale);
+				if (material.side === BackSide) uniforms.normalScale.value.negate();
+			}
+
+			if (material.displacementMap) {
+				uniforms.displacementMap.value = material.displacementMap;
+				uniforms.displacementScale.value = material.displacementScale;
+				uniforms.displacementBias.value = material.displacementBias;
+			}
+		}
+
+		return {
+			refreshFogUniforms: refreshFogUniforms,
+			refreshMaterialUniforms: refreshMaterialUniforms
+		};
+	}
+
+	function createCanvasElement() {
+		var canvas = document.createElementNS('http://www.w3.org/1999/xhtml', 'canvas');
+		canvas.style.display = 'block';
+		return canvas;
+	}
+
+	function WebGLRenderer(parameters) {
+		parameters = parameters || {};
+
+		var _canvas = parameters.canvas !== undefined ? parameters.canvas : createCanvasElement(),
+				_context = parameters.context !== undefined ? parameters.context : null,
+				_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
+				_depth = parameters.depth !== undefined ? parameters.depth : true,
+				_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
+				_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
+				_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
+				_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
+				_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
+				_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;
+
+		var currentRenderList = null;
+		var currentRenderState = null; // render() can be called from within a callback triggered by another render.
+		// We track this so that the nested render call gets its list and state isolated from the parent render call.
+
+		var renderListStack = [];
+		var renderStateStack = []; // public properties
+
+		this.domElement = _canvas; // Debug configuration container
+
+		this.debug = {
+			/**
+			 * Enables error checking and reporting when shader programs are being compiled
+			 * @type {boolean}
+			 */
+			checkShaderErrors: true
+		}; // clearing
+
+		this.autoClear = true;
+		this.autoClearColor = true;
+		this.autoClearDepth = true;
+		this.autoClearStencil = true; // scene graph
+
+		this.sortObjects = true; // user-defined clipping
+
+		this.clippingPlanes = [];
+		this.localClippingEnabled = false; // physically based shading
+
+		this.gammaFactor = 2.0; // for backwards compatibility
+
+		this.outputEncoding = LinearEncoding; // physical lights
+
+		this.physicallyCorrectLights = false; // tone mapping
+
+		this.toneMapping = NoToneMapping;
+		this.toneMappingExposure = 1.0; // morphs
+
+		this.maxMorphTargets = 8;
+		this.maxMorphNormals = 4; // internal properties
+
+		var _this = this;
+
+		var _isContextLost = false; // internal state cache
+
+		var _framebuffer = null;
+		var _currentActiveCubeFace = 0;
+		var _currentActiveMipmapLevel = 0;
+		var _currentRenderTarget = null;
+		var _currentFramebuffer = null;
+
+		var _currentMaterialId = -1;
+
+		var _currentCamera = null;
+
+		var _currentViewport = new Vector4();
+
+		var _currentScissor = new Vector4();
+
+		var _currentScissorTest = null; //
+
+		var _width = _canvas.width;
+		var _height = _canvas.height;
+		var _pixelRatio = 1;
+		var _opaqueSort = null;
+		var _transparentSort = null;
+
+		var _viewport = new Vector4(0, 0, _width, _height);
+
+		var _scissor = new Vector4(0, 0, _width, _height);
+
+		var _scissorTest = false; // frustum
+
+		var _frustum = new Frustum(); // clipping
+
+
+		var _clippingEnabled = false;
+		var _localClippingEnabled = false; // camera matrices cache
+
+		var _projScreenMatrix = new Matrix4();
+
+		var _vector3 = new Vector3();
+
+		var _emptyScene = {
+			background: null,
+			fog: null,
+			environment: null,
+			overrideMaterial: null,
+			isScene: true
+		};
+
+		function getTargetPixelRatio() {
+			return _currentRenderTarget === null ? _pixelRatio : 1;
+		} // initialize
+
+
+		var _gl = _context;
+
+		function getContext(contextNames, contextAttributes) {
+			for (var i = 0; i < contextNames.length; i++) {
+				var contextName = contextNames[i];
+
+				var context = _canvas.getContext(contextName, contextAttributes);
+
+				if (context !== null) return context;
+			}
+
+			return null;
+		}
+
+		try {
+			var contextAttributes = {
+				alpha: _alpha,
+				depth: _depth,
+				stencil: _stencil,
+				antialias: _antialias,
+				premultipliedAlpha: _premultipliedAlpha,
+				preserveDrawingBuffer: _preserveDrawingBuffer,
+				powerPreference: _powerPreference,
+				failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat
+			}; // event listeners must be registered before WebGL context is created, see #12753
+
+			_canvas.addEventListener('webglcontextlost', onContextLost, false);
+
+			_canvas.addEventListener('webglcontextrestored', onContextRestore, false);
+
+			if (_gl === null) {
+				var contextNames = ['webgl2', 'webgl', 'experimental-webgl'];
+
+				if (_this.isWebGL1Renderer === true) {
+					contextNames.shift();
+				}
+
+				_gl = getContext(contextNames, contextAttributes);
+
+				if (_gl === null) {
+					if (getContext(contextNames)) {
+						throw new Error('Error creating WebGL context with your selected attributes.');
+					} else {
+						throw new Error('Error creating WebGL context.');
+					}
+				}
+			} // Some experimental-webgl implementations do not have getShaderPrecisionFormat
+
+
+			if (_gl.getShaderPrecisionFormat === undefined) {
+				_gl.getShaderPrecisionFormat = function () {
+					return {
+						'rangeMin': 1,
+						'rangeMax': 1,
+						'precision': 1
+					};
+				};
+			}
+		} catch (error) {
+			console.error('THREE.WebGLRenderer: ' + error.message);
+			throw error;
+		}
+
+		var extensions, capabilities, state, info;
+		var properties, textures, cubemaps, attributes, geometries, objects;
+		var programCache, materials, renderLists, renderStates, clipping;
+		var background, morphtargets, bufferRenderer, indexedBufferRenderer;
+		var utils, bindingStates;
+
+		function initGLContext() {
+			extensions = new WebGLExtensions(_gl);
+			capabilities = new WebGLCapabilities(_gl, extensions, parameters);
+			extensions.init(capabilities);
+			utils = new WebGLUtils(_gl, extensions, capabilities);
+			state = new WebGLState(_gl, extensions, capabilities);
+			state.scissor(_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor());
+			state.viewport(_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor());
+			info = new WebGLInfo(_gl);
+			properties = new WebGLProperties();
+			textures = new WebGLTextures(_gl, extensions, state, properties, capabilities, utils, info);
+			cubemaps = new WebGLCubeMaps(_this);
+			attributes = new WebGLAttributes(_gl, capabilities);
+			bindingStates = new WebGLBindingStates(_gl, extensions, attributes, capabilities);
+			geometries = new WebGLGeometries(_gl, attributes, info, bindingStates);
+			objects = new WebGLObjects(_gl, geometries, attributes, info);
+			morphtargets = new WebGLMorphtargets(_gl);
+			clipping = new WebGLClipping(properties);
+			programCache = new WebGLPrograms(_this, cubemaps, extensions, capabilities, bindingStates, clipping);
+			materials = new WebGLMaterials(properties);
+			renderLists = new WebGLRenderLists(properties);
+			renderStates = new WebGLRenderStates(extensions, capabilities);
+			background = new WebGLBackground(_this, cubemaps, state, objects, _premultipliedAlpha);
+			bufferRenderer = new WebGLBufferRenderer(_gl, extensions, info, capabilities);
+			indexedBufferRenderer = new WebGLIndexedBufferRenderer(_gl, extensions, info, capabilities);
+			info.programs = programCache.programs;
+			_this.capabilities = capabilities;
+			_this.extensions = extensions;
+			_this.properties = properties;
+			_this.renderLists = renderLists;
+			_this.state = state;
+			_this.info = info;
+		}
+
+		initGLContext(); // xr
+
+		var xr = new WebXRManager(_this, _gl);
+		this.xr = xr; // shadow map
+
+		var shadowMap = new WebGLShadowMap(_this, objects, capabilities.maxTextureSize);
+		this.shadowMap = shadowMap; // API
+
+		this.getContext = function () {
+			return _gl;
+		};
+
+		this.getContextAttributes = function () {
+			return _gl.getContextAttributes();
+		};
+
+		this.forceContextLoss = function () {
+			var extension = extensions.get('WEBGL_lose_context');
+			if (extension) extension.loseContext();
+		};
+
+		this.forceContextRestore = function () {
+			var extension = extensions.get('WEBGL_lose_context');
+			if (extension) extension.restoreContext();
+		};
+
+		this.getPixelRatio = function () {
+			return _pixelRatio;
+		};
+
+		this.setPixelRatio = function (value) {
+			if (value === undefined) return;
+			_pixelRatio = value;
+			this.setSize(_width, _height, false);
+		};
+
+		this.getSize = function (target) {
+			if (target === undefined) {
+				console.warn('WebGLRenderer: .getsize() now requires a Vector2 as an argument');
+				target = new Vector2();
+			}
+
+			return target.set(_width, _height);
+		};
+
+		this.setSize = function (width, height, updateStyle) {
+			if (xr.isPresenting) {
+				console.warn('THREE.WebGLRenderer: Can\'t change size while VR device is presenting.');
+				return;
+			}
+
+			_width = width;
+			_height = height;
+			_canvas.width = Math.floor(width * _pixelRatio);
+			_canvas.height = Math.floor(height * _pixelRatio);
+
+			if (updateStyle !== false) {
+				_canvas.style.width = width + 'px';
+				_canvas.style.height = height + 'px';
+			}
+
+			this.setViewport(0, 0, width, height);
+		};
+
+		this.getDrawingBufferSize = function (target) {
+			if (target === undefined) {
+				console.warn('WebGLRenderer: .getdrawingBufferSize() now requires a Vector2 as an argument');
+				target = new Vector2();
+			}
+
+			return target.set(_width * _pixelRatio, _height * _pixelRatio).floor();
+		};
+
+		this.setDrawingBufferSize = function (width, height, pixelRatio) {
+			_width = width;
+			_height = height;
+			_pixelRatio = pixelRatio;
+			_canvas.width = Math.floor(width * pixelRatio);
+			_canvas.height = Math.floor(height * pixelRatio);
+			this.setViewport(0, 0, width, height);
+		};
+
+		this.getCurrentViewport = function (target) {
+			if (target === undefined) {
+				console.warn('WebGLRenderer: .getCurrentViewport() now requires a Vector4 as an argument');
+				target = new Vector4();
+			}
+
+			return target.copy(_currentViewport);
+		};
+
+		this.getViewport = function (target) {
+			return target.copy(_viewport);
+		};
+
+		this.setViewport = function (x, y, width, height) {
+			if (x.isVector4) {
+				_viewport.set(x.x, x.y, x.z, x.w);
+			} else {
+				_viewport.set(x, y, width, height);
+			}
+
+			state.viewport(_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor());
+		};
+
+		this.getScissor = function (target) {
+			return target.copy(_scissor);
+		};
+
+		this.setScissor = function (x, y, width, height) {
+			if (x.isVector4) {
+				_scissor.set(x.x, x.y, x.z, x.w);
+			} else {
+				_scissor.set(x, y, width, height);
+			}
+
+			state.scissor(_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor());
+		};
+
+		this.getScissorTest = function () {
+			return _scissorTest;
+		};
+
+		this.setScissorTest = function (boolean) {
+			state.setScissorTest(_scissorTest = boolean);
+		};
+
+		this.setOpaqueSort = function (method) {
+			_opaqueSort = method;
+		};
+
+		this.setTransparentSort = function (method) {
+			_transparentSort = method;
+		}; // Clearing
+
+
+		this.getClearColor = function (target) {
+			if (target === undefined) {
+				console.warn('WebGLRenderer: .getClearColor() now requires a Color as an argument');
+				target = new Color();
+			}
+
+			return target.copy(background.getClearColor());
+		};
+
+		this.setClearColor = function () {
+			background.setClearColor.apply(background, arguments);
+		};
+
+		this.getClearAlpha = function () {
+			return background.getClearAlpha();
+		};
+
+		this.setClearAlpha = function () {
+			background.setClearAlpha.apply(background, arguments);
+		};
+
+		this.clear = function (color, depth, stencil) {
+			var bits = 0;
+			if (color === undefined || color) bits |= 16384;
+			if (depth === undefined || depth) bits |= 256;
+			if (stencil === undefined || stencil) bits |= 1024;
+
+			_gl.clear(bits);
+		};
+
+		this.clearColor = function () {
+			this.clear(true, false, false);
+		};
+
+		this.clearDepth = function () {
+			this.clear(false, true, false);
+		};
+
+		this.clearStencil = function () {
+			this.clear(false, false, true);
+		}; //
+
+
+		this.dispose = function () {
+			_canvas.removeEventListener('webglcontextlost', onContextLost, false);
+
+			_canvas.removeEventListener('webglcontextrestored', onContextRestore, false);
+
+			renderLists.dispose();
+			renderStates.dispose();
+			properties.dispose();
+			cubemaps.dispose();
+			objects.dispose();
+			bindingStates.dispose();
+			xr.dispose();
+			animation.stop();
+		}; // Events
+
+
+		function onContextLost(event) {
+			event.preventDefault();
+			console.log('THREE.WebGLRenderer: Context Lost.');
+			_isContextLost = true;
+		}
+
+		function onContextRestore()
+		/* event */
+		{
+			console.log('THREE.WebGLRenderer: Context Restored.');
+			_isContextLost = false;
+			initGLContext();
+		}
+
+		function onMaterialDispose(event) {
+			var material = event.target;
+			material.removeEventListener('dispose', onMaterialDispose);
+			deallocateMaterial(material);
+		} // Buffer deallocation
+
+
+		function deallocateMaterial(material) {
+			releaseMaterialProgramReference(material);
+			properties.remove(material);
+		}
+
+		function releaseMaterialProgramReference(material) {
+			var programInfo = properties.get(material).program;
+
+			if (programInfo !== undefined) {
+				programCache.releaseProgram(programInfo);
+			}
+		} // Buffer rendering
+
+
+		function renderObjectImmediate(object, program) {
+			object.render(function (object) {
+				_this.renderBufferImmediate(object, program);
+			});
+		}
+
+		this.renderBufferImmediate = function (object, program) {
+			bindingStates.initAttributes();
+			var buffers = properties.get(object);
+			if (object.hasPositions && !buffers.position) buffers.position = _gl.createBuffer();
+			if (object.hasNormals && !buffers.normal) buffers.normal = _gl.createBuffer();
+			if (object.hasUvs && !buffers.uv) buffers.uv = _gl.createBuffer();
+			if (object.hasColors && !buffers.color) buffers.color = _gl.createBuffer();
+			var programAttributes = program.getAttributes();
+
+			if (object.hasPositions) {
+				_gl.bindBuffer(34962, buffers.position);
+
+				_gl.bufferData(34962, object.positionArray, 35048);
+
+				bindingStates.enableAttribute(programAttributes.position);
+
+				_gl.vertexAttribPointer(programAttributes.position, 3, 5126, false, 0, 0);
+			}
+
+			if (object.hasNormals) {
+				_gl.bindBuffer(34962, buffers.normal);
+
+				_gl.bufferData(34962, object.normalArray, 35048);
+
+				bindingStates.enableAttribute(programAttributes.normal);
+
+				_gl.vertexAttribPointer(programAttributes.normal, 3, 5126, false, 0, 0);
+			}
+
+			if (object.hasUvs) {
+				_gl.bindBuffer(34962, buffers.uv);
+
+				_gl.bufferData(34962, object.uvArray, 35048);
+
+				bindingStates.enableAttribute(programAttributes.uv);
+
+				_gl.vertexAttribPointer(programAttributes.uv, 2, 5126, false, 0, 0);
+			}
+
+			if (object.hasColors) {
+				_gl.bindBuffer(34962, buffers.color);
+
+				_gl.bufferData(34962, object.colorArray, 35048);
+
+				bindingStates.enableAttribute(programAttributes.color);
+
+				_gl.vertexAttribPointer(programAttributes.color, 3, 5126, false, 0, 0);
+			}
+
+			bindingStates.disableUnusedAttributes();
+
+			_gl.drawArrays(4, 0, object.count);
+
+			object.count = 0;
+		};
+
+		this.renderBufferDirect = function (camera, scene, geometry, material, object, group) {
+			if (scene === null) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)
+
+			var frontFaceCW = object.isMesh && object.matrixWorld.determinant() < 0;
+			var program = setProgram(camera, scene, material, object);
+			state.setMaterial(material, frontFaceCW); //
+
+			var index = geometry.index;
+			var position = geometry.attributes.position; //
+
+			if (index === null) {
+				if (position === undefined || position.count === 0) return;
+			} else if (index.count === 0) {
+				return;
+			} //
+
+
+			var rangeFactor = 1;
+
+			if (material.wireframe === true) {
+				index = geometries.getWireframeAttribute(geometry);
+				rangeFactor = 2;
+			}
+
+			if (material.morphTargets || material.morphNormals) {
+				morphtargets.update(object, geometry, material, program);
+			}
+
+			bindingStates.setup(object, material, program, geometry, index);
+			var attribute;
+			var renderer = bufferRenderer;
+
+			if (index !== null) {
+				attribute = attributes.get(index);
+				renderer = indexedBufferRenderer;
+				renderer.setIndex(attribute);
+			} //
+
+
+			var dataCount = index !== null ? index.count : position.count;
+			var rangeStart = geometry.drawRange.start * rangeFactor;
+			var rangeCount = geometry.drawRange.count * rangeFactor;
+			var groupStart = group !== null ? group.start * rangeFactor : 0;
+			var groupCount = group !== null ? group.count * rangeFactor : Infinity;
+			var drawStart = Math.max(rangeStart, groupStart);
+			var drawEnd = Math.min(dataCount, rangeStart + rangeCount, groupStart + groupCount) - 1;
+			var drawCount = Math.max(0, drawEnd - drawStart + 1);
+			if (drawCount === 0) return; //
+
+			if (object.isMesh) {
+				if (material.wireframe === true) {
+					state.setLineWidth(material.wireframeLinewidth * getTargetPixelRatio());
+					renderer.setMode(1);
+				} else {
+					renderer.setMode(4);
+				}
+			} else if (object.isLine) {
+				var lineWidth = material.linewidth;
+				if (lineWidth === undefined) lineWidth = 1; // Not using Line*Material
+
+				state.setLineWidth(lineWidth * getTargetPixelRatio());
+
+				if (object.isLineSegments) {
+					renderer.setMode(1);
+				} else if (object.isLineLoop) {
+					renderer.setMode(2);
+				} else {
+					renderer.setMode(3);
+				}
+			} else if (object.isPoints) {
+				renderer.setMode(0);
+			} else if (object.isSprite) {
+				renderer.setMode(4);
+			}
+
+			if (object.isInstancedMesh) {
+				renderer.renderInstances(drawStart, drawCount, object.count);
+			} else if (geometry.isInstancedBufferGeometry) {
+				var instanceCount = Math.min(geometry.instanceCount, geometry._maxInstanceCount);
+				renderer.renderInstances(drawStart, drawCount, instanceCount);
+			} else {
+				renderer.render(drawStart, drawCount);
+			}
+		}; // Compile
+
+
+		this.compile = function (scene, camera) {
+			currentRenderState = renderStates.get(scene);
+			currentRenderState.init();
+			scene.traverseVisible(function (object) {
+				if (object.isLight && object.layers.test(camera.layers)) {
+					currentRenderState.pushLight(object);
+
+					if (object.castShadow) {
+						currentRenderState.pushShadow(object);
+					}
+				}
+			});
+			currentRenderState.setupLights();
+			var compiled = new WeakMap();
+			scene.traverse(function (object) {
+				var material = object.material;
+
+				if (material) {
+					if (Array.isArray(material)) {
+						for (var i = 0; i < material.length; i++) {
+							var material2 = material[i];
+
+							if (compiled.has(material2) === false) {
+								initMaterial(material2, scene, object);
+								compiled.set(material2);
+							}
+						}
+					} else if (compiled.has(material) === false) {
+						initMaterial(material, scene, object);
+						compiled.set(material);
+					}
+				}
+			});
+		}; // Animation Loop
+
+
+		var onAnimationFrameCallback = null;
+
+		function onAnimationFrame(time) {
+			if (xr.isPresenting) return;
+			if (onAnimationFrameCallback) onAnimationFrameCallback(time);
+		}
+
+		var animation = new WebGLAnimation();
+		animation.setAnimationLoop(onAnimationFrame);
+		if (typeof window !== 'undefined') animation.setContext(window);
+
+		this.setAnimationLoop = function (callback) {
+			onAnimationFrameCallback = callback;
+			xr.setAnimationLoop(callback);
+			callback === null ? animation.stop() : animation.start();
+		}; // Rendering
+
+
+		this.render = function (scene, camera) {
+			var renderTarget, forceClear;
+
+			if (arguments[2] !== undefined) {
+				console.warn('THREE.WebGLRenderer.render(): the renderTarget argument has been removed. Use .setRenderTarget() instead.');
+				renderTarget = arguments[2];
+			}
+
+			if (arguments[3] !== undefined) {
+				console.warn('THREE.WebGLRenderer.render(): the forceClear argument has been removed. Use .clear() instead.');
+				forceClear = arguments[3];
+			}
+
+			if (camera !== undefined && camera.isCamera !== true) {
+				console.error('THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.');
+				return;
+			}
+
+			if (_isContextLost === true) return; // reset caching for this frame
+
+			bindingStates.resetDefaultState();
+			_currentMaterialId = -1;
+			_currentCamera = null; // update scene graph
+
+			if (scene.autoUpdate === true) scene.updateMatrixWorld(); // update camera matrices and frustum
+
+			if (camera.parent === null) camera.updateMatrixWorld();
+
+			if (xr.enabled === true && xr.isPresenting === true) {
+				camera = xr.getCamera(camera);
+			} //
+
+
+			if (scene.isScene === true) scene.onBeforeRender(_this, scene, camera, renderTarget || _currentRenderTarget);
+			currentRenderState = renderStates.get(scene, renderStateStack.length);
+			currentRenderState.init();
+			renderStateStack.push(currentRenderState);
+
+			_projScreenMatrix.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);
+
+			_frustum.setFromProjectionMatrix(_projScreenMatrix);
+
+			_localClippingEnabled = this.localClippingEnabled;
+			_clippingEnabled = clipping.init(this.clippingPlanes, _localClippingEnabled, camera);
+			currentRenderList = renderLists.get(scene, renderListStack.length);
+			currentRenderList.init();
+			renderListStack.push(currentRenderList);
+			projectObject(scene, camera, 0, _this.sortObjects);
+			currentRenderList.finish();
+
+			if (_this.sortObjects === true) {
+				currentRenderList.sort(_opaqueSort, _transparentSort);
+			} //
+
+
+			if (_clippingEnabled === true) clipping.beginShadows();
+			var shadowsArray = currentRenderState.state.shadowsArray;
+			shadowMap.render(shadowsArray, scene, camera);
+			currentRenderState.setupLights();
+			currentRenderState.setupLightsView(camera);
+			if (_clippingEnabled === true) clipping.endShadows(); //
+
+			if (this.info.autoReset === true) this.info.reset();
+
+			if (renderTarget !== undefined) {
+				this.setRenderTarget(renderTarget);
+			} //
+
+
+			background.render(currentRenderList, scene, camera, forceClear); // render scene
+
+			var opaqueObjects = currentRenderList.opaque;
+			var transparentObjects = currentRenderList.transparent;
+			if (opaqueObjects.length > 0) renderObjects(opaqueObjects, scene, camera);
+			if (transparentObjects.length > 0) renderObjects(transparentObjects, scene, camera); //
+
+			if (scene.isScene === true) scene.onAfterRender(_this, scene, camera); //
+
+			if (_currentRenderTarget !== null) {
+				// Generate mipmap if we're using any kind of mipmap filtering
+				textures.updateRenderTargetMipmap(_currentRenderTarget); // resolve multisample renderbuffers to a single-sample texture if necessary
+
+				textures.updateMultisampleRenderTarget(_currentRenderTarget);
+			} // Ensure depth buffer writing is enabled so it can be cleared on next render
+
+
+			state.buffers.depth.setTest(true);
+			state.buffers.depth.setMask(true);
+			state.buffers.color.setMask(true);
+			state.setPolygonOffset(false); // _gl.finish();
+
+			renderStateStack.pop();
+
+			if (renderStateStack.length > 0) {
+				currentRenderState = renderStateStack[renderStateStack.length - 1];
+			} else {
+				currentRenderState = null;
+			}
+
+			renderListStack.pop();
+
+			if (renderListStack.length > 0) {
+				currentRenderList = renderListStack[renderListStack.length - 1];
+			} else {
+				currentRenderList = null;
+			}
+		};
+
+		function projectObject(object, camera, groupOrder, sortObjects) {
+			if (object.visible === false) return;
+			var visible = object.layers.test(camera.layers);
+
+			if (visible) {
+				if (object.isGroup) {
+					groupOrder = object.renderOrder;
+				} else if (object.isLOD) {
+					if (object.autoUpdate === true) object.update(camera);
+				} else if (object.isLight) {
+					currentRenderState.pushLight(object);
+
+					if (object.castShadow) {
+						currentRenderState.pushShadow(object);
+					}
+				} else if (object.isSprite) {
+					if (!object.frustumCulled || _frustum.intersectsSprite(object)) {
+						if (sortObjects) {
+							_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
+						}
+
+						var geometry = objects.update(object);
+						var material = object.material;
+
+						if (material.visible) {
+							currentRenderList.push(object, geometry, material, groupOrder, _vector3.z, null);
+						}
+					}
+				} else if (object.isImmediateRenderObject) {
+					if (sortObjects) {
+						_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
+					}
+
+					currentRenderList.push(object, null, object.material, groupOrder, _vector3.z, null);
+				} else if (object.isMesh || object.isLine || object.isPoints) {
+					if (object.isSkinnedMesh) {
+						// update skeleton only once in a frame
+						if (object.skeleton.frame !== info.render.frame) {
+							object.skeleton.update();
+							object.skeleton.frame = info.render.frame;
+						}
+					}
+
+					if (!object.frustumCulled || _frustum.intersectsObject(object)) {
+						if (sortObjects) {
+							_vector3.setFromMatrixPosition(object.matrixWorld).applyMatrix4(_projScreenMatrix);
+						}
+
+						var _geometry = objects.update(object);
+
+						var _material = object.material;
+
+						if (Array.isArray(_material)) {
+							var groups = _geometry.groups;
+
+							for (var i = 0, l = groups.length; i < l; i++) {
+								var group = groups[i];
+								var groupMaterial = _material[group.materialIndex];
+
+								if (groupMaterial && groupMaterial.visible) {
+									currentRenderList.push(object, _geometry, groupMaterial, groupOrder, _vector3.z, group);
+								}
+							}
+						} else if (_material.visible) {
+							currentRenderList.push(object, _geometry, _material, groupOrder, _vector3.z, null);
+						}
+					}
+				}
+			}
+
+			var children = object.children;
+
+			for (var _i = 0, _l = children.length; _i < _l; _i++) {
+				projectObject(children[_i], camera, groupOrder, sortObjects);
+			}
+		}
+
+		function renderObjects(renderList, scene, camera) {
+			var overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
+
+			for (var i = 0, l = renderList.length; i < l; i++) {
+				var renderItem = renderList[i];
+				var object = renderItem.object;
+				var geometry = renderItem.geometry;
+				var material = overrideMaterial === null ? renderItem.material : overrideMaterial;
+				var group = renderItem.group;
+
+				if (camera.isArrayCamera) {
+					var cameras = camera.cameras;
+
+					for (var j = 0, jl = cameras.length; j < jl; j++) {
+						var camera2 = cameras[j];
+
+						if (object.layers.test(camera2.layers)) {
+							state.viewport(_currentViewport.copy(camera2.viewport));
+							currentRenderState.setupLightsView(camera2);
+							renderObject(object, scene, camera2, geometry, material, group);
+						}
+					}
+				} else {
+					renderObject(object, scene, camera, geometry, material, group);
+				}
+			}
+		}
+
+		function renderObject(object, scene, camera, geometry, material, group) {
+			object.onBeforeRender(_this, scene, camera, geometry, material, group);
+			object.modelViewMatrix.multiplyMatrices(camera.matrixWorldInverse, object.matrixWorld);
+			object.normalMatrix.getNormalMatrix(object.modelViewMatrix);
+
+			if (object.isImmediateRenderObject) {
+				var program = setProgram(camera, scene, material, object);
+				state.setMaterial(material);
+				bindingStates.reset();
+				renderObjectImmediate(object, program);
+			} else {
+				_this.renderBufferDirect(camera, scene, geometry, material, object, group);
+			}
+
+			object.onAfterRender(_this, scene, camera, geometry, material, group);
+		}
+
+		function initMaterial(material, scene, object) {
+			if (scene.isScene !== true) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...
+
+			var materialProperties = properties.get(material);
+			var lights = currentRenderState.state.lights;
+			var shadowsArray = currentRenderState.state.shadowsArray;
+			var lightsStateVersion = lights.state.version;
+			var parameters = programCache.getParameters(material, lights.state, shadowsArray, scene, object);
+			var programCacheKey = programCache.getProgramCacheKey(parameters);
+			var program = materialProperties.program;
+			var programChange = true; // always update environment and fog - changing these trigger an initMaterial call, but it's possible that the program doesn't change
+
+			materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
+			materialProperties.fog = scene.fog;
+			materialProperties.envMap = cubemaps.get(material.envMap || materialProperties.environment);
+
+			if (program === undefined) {
+				// new material
+				material.addEventListener('dispose', onMaterialDispose);
+			} else if (program.cacheKey !== programCacheKey) {
+				// changed glsl or parameters
+				releaseMaterialProgramReference(material);
+			} else if (materialProperties.lightsStateVersion !== lightsStateVersion) {
+				programChange = false;
+			} else if (parameters.shaderID !== undefined) {
+				// same glsl and uniform list
+				return;
+			} else {
+				// only rebuild uniform list
+				programChange = false;
+			}
+
+			if (programChange) {
+				parameters.uniforms = programCache.getUniforms(material);
+				material.onBeforeCompile(parameters, _this);
+				program = programCache.acquireProgram(parameters, programCacheKey);
+				materialProperties.program = program;
+				materialProperties.uniforms = parameters.uniforms;
+				materialProperties.outputEncoding = parameters.outputEncoding;
+			}
+
+			var uniforms = materialProperties.uniforms;
+
+			if (!material.isShaderMaterial && !material.isRawShaderMaterial || material.clipping === true) {
+				materialProperties.numClippingPlanes = clipping.numPlanes;
+				materialProperties.numIntersection = clipping.numIntersection;
+				uniforms.clippingPlanes = clipping.uniform;
+			} // store the light setup it was created for
+
+
+			materialProperties.needsLights = materialNeedsLights(material);
+			materialProperties.lightsStateVersion = lightsStateVersion;
+
+			if (materialProperties.needsLights) {
+				// wire up the material to this renderer's lighting state
+				uniforms.ambientLightColor.value = lights.state.ambient;
+				uniforms.lightProbe.value = lights.state.probe;
+				uniforms.directionalLights.value = lights.state.directional;
+				uniforms.directionalLightShadows.value = lights.state.directionalShadow;
+				uniforms.spotLights.value = lights.state.spot;
+				uniforms.spotLightShadows.value = lights.state.spotShadow;
+				uniforms.rectAreaLights.value = lights.state.rectArea;
+				uniforms.ltc_1.value = lights.state.rectAreaLTC1;
+				uniforms.ltc_2.value = lights.state.rectAreaLTC2;
+				uniforms.pointLights.value = lights.state.point;
+				uniforms.pointLightShadows.value = lights.state.pointShadow;
+				uniforms.hemisphereLights.value = lights.state.hemi;
+				uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
+				uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
+				uniforms.spotShadowMap.value = lights.state.spotShadowMap;
+				uniforms.spotShadowMatrix.value = lights.state.spotShadowMatrix;
+				uniforms.pointShadowMap.value = lights.state.pointShadowMap;
+				uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix; // TODO (abelnation): add area lights shadow info to uniforms
+			}
+
+			var progUniforms = materialProperties.program.getUniforms();
+			var uniformsList = WebGLUniforms.seqWithValue(progUniforms.seq, uniforms);
+			materialProperties.uniformsList = uniformsList;
+		}
+
+		function setProgram(camera, scene, material, object) {
+			if (scene.isScene !== true) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...
+
+			textures.resetTextureUnits();
+			var fog = scene.fog;
+			var environment = material.isMeshStandardMaterial ? scene.environment : null;
+			var encoding = _currentRenderTarget === null ? _this.outputEncoding : _currentRenderTarget.texture.encoding;
+			var envMap = cubemaps.get(material.envMap || environment);
+			var materialProperties = properties.get(material);
+			var lights = currentRenderState.state.lights;
+
+			if (_clippingEnabled === true) {
+				if (_localClippingEnabled === true || camera !== _currentCamera) {
+					var useCache = camera === _currentCamera && material.id === _currentMaterialId; // we might want to call this function with some ClippingGroup
+					// object instead of the material, once it becomes feasible
+					// (#8465, #8379)
+
+					clipping.setState(material, camera, useCache);
+				}
+			}
+
+			if (material.version === materialProperties.__version) {
+				if (material.fog && materialProperties.fog !== fog) {
+					initMaterial(material, scene, object);
+				} else if (materialProperties.environment !== environment) {
+					initMaterial(material, scene, object);
+				} else if (materialProperties.needsLights && materialProperties.lightsStateVersion !== lights.state.version) {
+					initMaterial(material, scene, object);
+				} else if (materialProperties.numClippingPlanes !== undefined && (materialProperties.numClippingPlanes !== clipping.numPlanes || materialProperties.numIntersection !== clipping.numIntersection)) {
+					initMaterial(material, scene, object);
+				} else if (materialProperties.outputEncoding !== encoding) {
+					initMaterial(material, scene, object);
+				} else if (materialProperties.envMap !== envMap) {
+					initMaterial(material, scene, object);
+				}
+			} else {
+				initMaterial(material, scene, object);
+				materialProperties.__version = material.version;
+			}
+
+			var refreshProgram = false;
+			var refreshMaterial = false;
+			var refreshLights = false;
+			var program = materialProperties.program,
+					p_uniforms = program.getUniforms(),
+					m_uniforms = materialProperties.uniforms;
+
+			if (state.useProgram(program.program)) {
+				refreshProgram = true;
+				refreshMaterial = true;
+				refreshLights = true;
+			}
+
+			if (material.id !== _currentMaterialId) {
+				_currentMaterialId = material.id;
+				refreshMaterial = true;
+			}
+
+			if (refreshProgram || _currentCamera !== camera) {
+				p_uniforms.setValue(_gl, 'projectionMatrix', camera.projectionMatrix);
+
+				if (capabilities.logarithmicDepthBuffer) {
+					p_uniforms.setValue(_gl, 'logDepthBufFC', 2.0 / (Math.log(camera.far + 1.0) / Math.LN2));
+				}
+
+				if (_currentCamera !== camera) {
+					_currentCamera = camera; // lighting uniforms depend on the camera so enforce an update
+					// now, in case this material supports lights - or later, when
+					// the next material that does gets activated:
+
+					refreshMaterial = true; // set to true on material change
+
+					refreshLights = true; // remains set until update done
+				} // load material specific uniforms
+				// (shader material also gets them for the sake of genericity)
+
+
+				if (material.isShaderMaterial || material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshStandardMaterial || material.envMap) {
+					var uCamPos = p_uniforms.map.cameraPosition;
+
+					if (uCamPos !== undefined) {
+						uCamPos.setValue(_gl, _vector3.setFromMatrixPosition(camera.matrixWorld));
+					}
+				}
+
+				if (material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshLambertMaterial || material.isMeshBasicMaterial || material.isMeshStandardMaterial || material.isShaderMaterial) {
+					p_uniforms.setValue(_gl, 'isOrthographic', camera.isOrthographicCamera === true);
+				}
+
+				if (material.isMeshPhongMaterial || material.isMeshToonMaterial || material.isMeshLambertMaterial || material.isMeshBasicMaterial || material.isMeshStandardMaterial || material.isShaderMaterial || material.isShadowMaterial || material.skinning) {
+					p_uniforms.setValue(_gl, 'viewMatrix', camera.matrixWorldInverse);
+				}
+			} // skinning uniforms must be set even if material didn't change
+			// auto-setting of texture unit for bone texture must go before other textures
+			// otherwise textures used for skinning can take over texture units reserved for other material textures
+
+
+			if (material.skinning) {
+				p_uniforms.setOptional(_gl, object, 'bindMatrix');
+				p_uniforms.setOptional(_gl, object, 'bindMatrixInverse');
+				var skeleton = object.skeleton;
+
+				if (skeleton) {
+					var bones = skeleton.bones;
+
+					if (capabilities.floatVertexTextures) {
+						if (skeleton.boneTexture === null) {
+							// layout (1 matrix = 4 pixels)
+							//			RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
+							//	with	8x8	pixel texture max	 16 bones * 4 pixels =	(8 * 8)
+							//			 16x16 pixel texture max	 64 bones * 4 pixels = (16 * 16)
+							//			 32x32 pixel texture max	256 bones * 4 pixels = (32 * 32)
+							//			 64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)
+							var size = Math.sqrt(bones.length * 4); // 4 pixels needed for 1 matrix
+
+							size = MathUtils.ceilPowerOfTwo(size);
+							size = Math.max(size, 4);
+							var boneMatrices = new Float32Array(size * size * 4); // 4 floats per RGBA pixel
+
+							boneMatrices.set(skeleton.boneMatrices); // copy current values
+
+							var boneTexture = new DataTexture(boneMatrices, size, size, RGBAFormat, FloatType);
+							skeleton.boneMatrices = boneMatrices;
+							skeleton.boneTexture = boneTexture;
+							skeleton.boneTextureSize = size;
+						}
+
+						p_uniforms.setValue(_gl, 'boneTexture', skeleton.boneTexture, textures);
+						p_uniforms.setValue(_gl, 'boneTextureSize', skeleton.boneTextureSize);
+					} else {
+						p_uniforms.setOptional(_gl, skeleton, 'boneMatrices');
+					}
+				}
+			}
+
+			if (refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow) {
+				materialProperties.receiveShadow = object.receiveShadow;
+				p_uniforms.setValue(_gl, 'receiveShadow', object.receiveShadow);
+			}
+
+			if (refreshMaterial) {
+				p_uniforms.setValue(_gl, 'toneMappingExposure', _this.toneMappingExposure);
+
+				if (materialProperties.needsLights) {
+					// the current material requires lighting info
+					// note: all lighting uniforms are always set correctly
+					// they simply reference the renderer's state for their
+					// values
+					//
+					// use the current material's .needsUpdate flags to set
+					// the GL state when required
+					markUniformsLightsNeedsUpdate(m_uniforms, refreshLights);
+				} // refresh uniforms common to several materials
+
+
+				if (fog && material.fog) {
+					materials.refreshFogUniforms(m_uniforms, fog);
+				}
+
+				materials.refreshMaterialUniforms(m_uniforms, material, _pixelRatio, _height);
+				WebGLUniforms.upload(_gl, materialProperties.uniformsList, m_uniforms, textures);
+			}
+
+			if (material.isShaderMaterial && material.uniformsNeedUpdate === true) {
+				WebGLUniforms.upload(_gl, materialProperties.uniformsList, m_uniforms, textures);
+				material.uniformsNeedUpdate = false;
+			}
+
+			if (material.isSpriteMaterial) {
+				p_uniforms.setValue(_gl, 'center', object.center);
+			} // common matrices
+
+
+			p_uniforms.setValue(_gl, 'modelViewMatrix', object.modelViewMatrix);
+			p_uniforms.setValue(_gl, 'normalMatrix', object.normalMatrix);
+			p_uniforms.setValue(_gl, 'modelMatrix', object.matrixWorld);
+			return program;
+		} // If uniforms are marked as clean, they don't need to be loaded to the GPU.
+
+
+		function markUniformsLightsNeedsUpdate(uniforms, value) {
+			uniforms.ambientLightColor.needsUpdate = value;
+			uniforms.lightProbe.needsUpdate = value;
+			uniforms.directionalLights.needsUpdate = value;
+			uniforms.directionalLightShadows.needsUpdate = value;
+			uniforms.pointLights.needsUpdate = value;
+			uniforms.pointLightShadows.needsUpdate = value;
+			uniforms.spotLights.needsUpdate = value;
+			uniforms.spotLightShadows.needsUpdate = value;
+			uniforms.rectAreaLights.needsUpdate = value;
+			uniforms.hemisphereLights.needsUpdate = value;
+		}
+
+		function materialNeedsLights(material) {
+			return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial || material.isMeshStandardMaterial || material.isShadowMaterial || material.isShaderMaterial && material.lights === true;
+		} //
+
+
+		this.setFramebuffer = function (value) {
+			if (_framebuffer !== value && _currentRenderTarget === null) _gl.bindFramebuffer(36160, value);
+			_framebuffer = value;
+		};
+
+		this.getActiveCubeFace = function () {
+			return _currentActiveCubeFace;
+		};
+
+		this.getActiveMipmapLevel = function () {
+			return _currentActiveMipmapLevel;
+		};
+
+		this.getRenderTarget = function () {
+			return _currentRenderTarget;
+		};
+
+		this.setRenderTarget = function (renderTarget, activeCubeFace, activeMipmapLevel) {
+			if (activeCubeFace === void 0) {
+				activeCubeFace = 0;
+			}
+
+			if (activeMipmapLevel === void 0) {
+				activeMipmapLevel = 0;
+			}
+
+			_currentRenderTarget = renderTarget;
+			_currentActiveCubeFace = activeCubeFace;
+			_currentActiveMipmapLevel = activeMipmapLevel;
+
+			if (renderTarget && properties.get(renderTarget).__webglFramebuffer === undefined) {
+				textures.setupRenderTarget(renderTarget);
+			}
+
+			var framebuffer = _framebuffer;
+			var isCube = false;
+			var isRenderTarget3D = false;
+
+			if (renderTarget) {
+				var texture = renderTarget.texture;
+
+				if (texture.isDataTexture3D || texture.isDataTexture2DArray) {
+					isRenderTarget3D = true;
+				}
+
+				var __webglFramebuffer = properties.get(renderTarget).__webglFramebuffer;
+
+				if (renderTarget.isWebGLCubeRenderTarget) {
+					framebuffer = __webglFramebuffer[activeCubeFace];
+					isCube = true;
+				} else if (renderTarget.isWebGLMultisampleRenderTarget) {
+					framebuffer = properties.get(renderTarget).__webglMultisampledFramebuffer;
+				} else {
+					framebuffer = __webglFramebuffer;
+				}
+
+				_currentViewport.copy(renderTarget.viewport);
+
+				_currentScissor.copy(renderTarget.scissor);
+
+				_currentScissorTest = renderTarget.scissorTest;
+			} else {
+				_currentViewport.copy(_viewport).multiplyScalar(_pixelRatio).floor();
+
+				_currentScissor.copy(_scissor).multiplyScalar(_pixelRatio).floor();
+
+				_currentScissorTest = _scissorTest;
+			}
+
+			if (_currentFramebuffer !== framebuffer) {
+				_gl.bindFramebuffer(36160, framebuffer);
+
+				_currentFramebuffer = framebuffer;
+			}
+
+			state.viewport(_currentViewport);
+			state.scissor(_currentScissor);
+			state.setScissorTest(_currentScissorTest);
+
+			if (isCube) {
+				var textureProperties = properties.get(renderTarget.texture);
+
+				_gl.framebufferTexture2D(36160, 36064, 34069 + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel);
+			} else if (isRenderTarget3D) {
+				var _textureProperties = properties.get(renderTarget.texture);
+
+				var layer = activeCubeFace || 0;
+
+				_gl.framebufferTextureLayer(36160, 36064, _textureProperties.__webglTexture, activeMipmapLevel || 0, layer);
+			}
+		};
+
+		this.readRenderTargetPixels = function (renderTarget, x, y, width, height, buffer, activeCubeFaceIndex) {
+			if (!(renderTarget && renderTarget.isWebGLRenderTarget)) {
+				console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.');
+				return;
+			}
+
+			var framebuffer = properties.get(renderTarget).__webglFramebuffer;
+
+			if (renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined) {
+				framebuffer = framebuffer[activeCubeFaceIndex];
+			}
+
+			if (framebuffer) {
+				var restore = false;
+
+				if (framebuffer !== _currentFramebuffer) {
+					_gl.bindFramebuffer(36160, framebuffer);
+
+					restore = true;
+				}
+
+				try {
+					var texture = renderTarget.texture;
+					var textureFormat = texture.format;
+					var textureType = texture.type;
+
+					if (textureFormat !== RGBAFormat && utils.convert(textureFormat) !== _gl.getParameter(35739)) {
+						console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.');
+						return;
+					}
+
+					var halfFloatSupportedByExt = textureType === HalfFloatType && (extensions.has('EXT_color_buffer_half_float') || capabilities.isWebGL2 && extensions.has('EXT_color_buffer_float'));
+
+					if (textureType !== UnsignedByteType && utils.convert(textureType) !== _gl.getParameter(35738) && // Edge and Chrome Mac < 52 (#9513)
+					!(textureType === FloatType && (capabilities.isWebGL2 || extensions.has('OES_texture_float') || extensions.has('WEBGL_color_buffer_float'))) && // Chrome Mac >= 52 and Firefox
+					!halfFloatSupportedByExt) {
+						console.error('THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.');
+						return;
+					}
+
+					if (_gl.checkFramebufferStatus(36160) === 36053) {
+						// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)
+						if (x >= 0 && x <= renderTarget.width - width && y >= 0 && y <= renderTarget.height - height) {
+							_gl.readPixels(x, y, width, height, utils.convert(textureFormat), utils.convert(textureType), buffer);
+						}
+					} else {
+						console.error('THREE.WebGLRenderer.readRenderTargetPixels: readPixels from renderTarget failed. Framebuffer not complete.');
+					}
+				} finally {
+					if (restore) {
+						_gl.bindFramebuffer(36160, _currentFramebuffer);
+					}
+				}
+			}
+		};
+
+		this.copyFramebufferToTexture = function (position, texture, level) {
+			if (level === void 0) {
+				level = 0;
+			}
+
+			var levelScale = Math.pow(2, -level);
+			var width = Math.floor(texture.image.width * levelScale);
+			var height = Math.floor(texture.image.height * levelScale);
+			var glFormat = utils.convert(texture.format);
+			textures.setTexture2D(texture, 0);
+
+			_gl.copyTexImage2D(3553, level, glFormat, position.x, position.y, width, height, 0);
+
+			state.unbindTexture();
+		};
+
+		this.copyTextureToTexture = function (position, srcTexture, dstTexture, level) {
+			if (level === void 0) {
+				level = 0;
+			}
+
+			var width = srcTexture.image.width;
+			var height = srcTexture.image.height;
+			var glFormat = utils.convert(dstTexture.format);
+			var glType = utils.convert(dstTexture.type);
+			textures.setTexture2D(dstTexture, 0); // As another texture upload may have changed pixelStorei
+			// parameters, make sure they are correct for the dstTexture
+
+			_gl.pixelStorei(37440, dstTexture.flipY);
+
+			_gl.pixelStorei(37441, dstTexture.premultiplyAlpha);
+
+			_gl.pixelStorei(3317, dstTexture.unpackAlignment);
+
+			if (srcTexture.isDataTexture) {
+				_gl.texSubImage2D(3553, level, position.x, position.y, width, height, glFormat, glType, srcTexture.image.data);
+			} else {
+				if (srcTexture.isCompressedTexture) {
+					_gl.compressedTexSubImage2D(3553, level, position.x, position.y, srcTexture.mipmaps[0].width, srcTexture.mipmaps[0].height, glFormat, srcTexture.mipmaps[0].data);
+				} else {
+					_gl.texSubImage2D(3553, level, position.x, position.y, glFormat, glType, srcTexture.image);
+				}
+			} // Generate mipmaps only when copying level 0
+
+
+			if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(3553);
+			state.unbindTexture();
+		};
+
+		this.copyTextureToTexture3D = function (sourceBox, position, srcTexture, dstTexture, level) {
+			if (level === void 0) {
+				level = 0;
+			}
+
+			if (_this.isWebGL1Renderer) {
+				console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: can only be used with WebGL2.');
+				return;
+			}
+
+			var _srcTexture$image = srcTexture.image,
+					width = _srcTexture$image.width,
+					height = _srcTexture$image.height,
+					data = _srcTexture$image.data;
+			var glFormat = utils.convert(dstTexture.format);
+			var glType = utils.convert(dstTexture.type);
+			var glTarget;
+
+			if (dstTexture.isDataTexture3D) {
+				textures.setTexture3D(dstTexture, 0);
+				glTarget = 32879;
+			} else if (dstTexture.isDataTexture2DArray) {
+				textures.setTexture2DArray(dstTexture, 0);
+				glTarget = 35866;
+			} else {
+				console.warn('THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.');
+				return;
+			}
+
+			_gl.pixelStorei(37440, dstTexture.flipY);
+
+			_gl.pixelStorei(37441, dstTexture.premultiplyAlpha);
+
+			_gl.pixelStorei(3317, dstTexture.unpackAlignment);
+
+			var unpackRowLen = _gl.getParameter(3314);
+
+			var unpackImageHeight = _gl.getParameter(32878);
+
+			var unpackSkipPixels = _gl.getParameter(3316);
+
+			var unpackSkipRows = _gl.getParameter(3315);
+
+			var unpackSkipImages = _gl.getParameter(32877);
+
+			_gl.pixelStorei(3314, width);
+
+			_gl.pixelStorei(32878, height);
+
+			_gl.pixelStorei(3316, sourceBox.min.x);
+
+			_gl.pixelStorei(3315, sourceBox.min.y);
+
+			_gl.pixelStorei(32877, sourceBox.min.z);
+
+			_gl.texSubImage3D(glTarget, level, position.x, position.y, position.z, sourceBox.max.x - sourceBox.min.x + 1, sourceBox.max.y - sourceBox.min.y + 1, sourceBox.max.z - sourceBox.min.z + 1, glFormat, glType, data);
+
+			_gl.pixelStorei(3314, unpackRowLen);
+
+			_gl.pixelStorei(32878, unpackImageHeight);
+
+			_gl.pixelStorei(3316, unpackSkipPixels);
+
+			_gl.pixelStorei(3315, unpackSkipRows);
+
+			_gl.pixelStorei(32877, unpackSkipImages); // Generate mipmaps only when copying level 0
+
+
+			if (level === 0 && dstTexture.generateMipmaps) _gl.generateMipmap(glTarget);
+			state.unbindTexture();
+		};
+
+		this.initTexture = function (texture) {
+			textures.setTexture2D(texture, 0);
+			state.unbindTexture();
+		};
+
+		this.resetState = function () {
+			state.reset();
+			bindingStates.reset();
+		};
+
+		if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
+			__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('observe', {
+				detail: this
+			})); // eslint-disable-line no-undef
+
+		}
+	}
+
+	var WebGL1Renderer = /*#__PURE__*/function (_WebGLRenderer) {
+		_inheritsLoose(WebGL1Renderer, _WebGLRenderer);
+
+		function WebGL1Renderer() {
+			return _WebGLRenderer.apply(this, arguments) || this;
+		}
+
+		return WebGL1Renderer;
+	}(WebGLRenderer);
+
+	WebGL1Renderer.prototype.isWebGL1Renderer = true;
+
+	var FogExp2 = /*#__PURE__*/function () {
+		function FogExp2(color, density) {
+			this.name = '';
+			this.color = new Color(color);
+			this.density = density !== undefined ? density : 0.00025;
+		}
+
+		var _proto = FogExp2.prototype;
+
+		_proto.clone = function clone() {
+			return new FogExp2(this.color, this.density);
+		};
+
+		_proto.toJSON = function toJSON()
+		/* meta */
+		{
+			return {
+				type: 'FogExp2',
+				color: this.color.getHex(),
+				density: this.density
+			};
+		};
+
+		return FogExp2;
+	}();
+
+	FogExp2.prototype.isFogExp2 = true;
+
+	var Fog = /*#__PURE__*/function () {
+		function Fog(color, near, far) {
+			this.name = '';
+			this.color = new Color(color);
+			this.near = near !== undefined ? near : 1;
+			this.far = far !== undefined ? far : 1000;
+		}
+
+		var _proto = Fog.prototype;
+
+		_proto.clone = function clone() {
+			return new Fog(this.color, this.near, this.far);
+		};
+
+		_proto.toJSON = function toJSON()
+		/* meta */
+		{
+			return {
+				type: 'Fog',
+				color: this.color.getHex(),
+				near: this.near,
+				far: this.far
+			};
+		};
+
+		return Fog;
+	}();
+
+	Fog.prototype.isFog = true;
+
+	var Scene = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(Scene, _Object3D);
+
+		function Scene() {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'Scene';
+			_this.background = null;
+			_this.environment = null;
+			_this.fog = null;
+			_this.overrideMaterial = null;
+			_this.autoUpdate = true; // checked by the renderer
+
+			if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
+				__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('observe', {
+					detail: _assertThisInitialized(_this)
+				})); // eslint-disable-line no-undef
+
+			}
+
+			return _this;
+		}
+
+		var _proto = Scene.prototype;
+
+		_proto.copy = function copy(source, recursive) {
+			_Object3D.prototype.copy.call(this, source, recursive);
+
+			if (source.background !== null) this.background = source.background.clone();
+			if (source.environment !== null) this.environment = source.environment.clone();
+			if (source.fog !== null) this.fog = source.fog.clone();
+			if (source.overrideMaterial !== null) this.overrideMaterial = source.overrideMaterial.clone();
+			this.autoUpdate = source.autoUpdate;
+			this.matrixAutoUpdate = source.matrixAutoUpdate;
+			return this;
+		};
+
+		_proto.toJSON = function toJSON(meta) {
+			var data = _Object3D.prototype.toJSON.call(this, meta);
+
+			if (this.background !== null) data.object.background = this.background.toJSON(meta);
+			if (this.environment !== null) data.object.environment = this.environment.toJSON(meta);
+			if (this.fog !== null) data.object.fog = this.fog.toJSON();
+			return data;
+		};
+
+		return Scene;
+	}(Object3D);
+
+	Scene.prototype.isScene = true;
+
+	function InterleavedBuffer(array, stride) {
+		this.array = array;
+		this.stride = stride;
+		this.count = array !== undefined ? array.length / stride : 0;
+		this.usage = StaticDrawUsage;
+		this.updateRange = {
+			offset: 0,
+			count: -1
+		};
+		this.version = 0;
+		this.uuid = MathUtils.generateUUID();
+	}
+
+	Object.defineProperty(InterleavedBuffer.prototype, 'needsUpdate', {
+		set: function set(value) {
+			if (value === true) this.version++;
+		}
+	});
+	Object.assign(InterleavedBuffer.prototype, {
+		isInterleavedBuffer: true,
+		onUploadCallback: function onUploadCallback() {},
+		setUsage: function setUsage(value) {
+			this.usage = value;
+			return this;
+		},
+		copy: function copy(source) {
+			this.array = new source.array.constructor(source.array);
+			this.count = source.count;
+			this.stride = source.stride;
+			this.usage = source.usage;
+			return this;
+		},
+		copyAt: function copyAt(index1, attribute, index2) {
+			index1 *= this.stride;
+			index2 *= attribute.stride;
+
+			for (var i = 0, l = this.stride; i < l; i++) {
+				this.array[index1 + i] = attribute.array[index2 + i];
+			}
+
+			return this;
+		},
+		set: function set(value, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			this.array.set(value, offset);
+			return this;
+		},
+		clone: function clone(data) {
+			if (data.arrayBuffers === undefined) {
+				data.arrayBuffers = {};
+			}
+
+			if (this.array.buffer._uuid === undefined) {
+				this.array.buffer._uuid = MathUtils.generateUUID();
+			}
+
+			if (data.arrayBuffers[this.array.buffer._uuid] === undefined) {
+				data.arrayBuffers[this.array.buffer._uuid] = this.array.slice(0).buffer;
+			}
+
+			var array = new this.array.constructor(data.arrayBuffers[this.array.buffer._uuid]);
+			var ib = new InterleavedBuffer(array, this.stride);
+			ib.setUsage(this.usage);
+			return ib;
+		},
+		onUpload: function onUpload(callback) {
+			this.onUploadCallback = callback;
+			return this;
+		},
+		toJSON: function toJSON(data) {
+			if (data.arrayBuffers === undefined) {
+				data.arrayBuffers = {};
+			} // generate UUID for array buffer if necessary
+
+
+			if (this.array.buffer._uuid === undefined) {
+				this.array.buffer._uuid = MathUtils.generateUUID();
+			}
+
+			if (data.arrayBuffers[this.array.buffer._uuid] === undefined) {
+				data.arrayBuffers[this.array.buffer._uuid] = Array.prototype.slice.call(new Uint32Array(this.array.buffer));
+			} //
+
+
+			return {
+				uuid: this.uuid,
+				buffer: this.array.buffer._uuid,
+				type: this.array.constructor.name,
+				stride: this.stride
+			};
+		}
+	});
+
+	var _vector$6 = new Vector3();
+
+	function InterleavedBufferAttribute(interleavedBuffer, itemSize, offset, normalized) {
+		this.name = '';
+		this.data = interleavedBuffer;
+		this.itemSize = itemSize;
+		this.offset = offset;
+		this.normalized = normalized === true;
+	}
+
+	Object.defineProperties(InterleavedBufferAttribute.prototype, {
+		count: {
+			get: function get() {
+				return this.data.count;
+			}
+		},
+		array: {
+			get: function get() {
+				return this.data.array;
+			}
+		},
+		needsUpdate: {
+			set: function set(value) {
+				this.data.needsUpdate = value;
+			}
+		}
+	});
+	Object.assign(InterleavedBufferAttribute.prototype, {
+		isInterleavedBufferAttribute: true,
+		applyMatrix4: function applyMatrix4(m) {
+			for (var i = 0, l = this.data.count; i < l; i++) {
+				_vector$6.x = this.getX(i);
+				_vector$6.y = this.getY(i);
+				_vector$6.z = this.getZ(i);
+
+				_vector$6.applyMatrix4(m);
+
+				this.setXYZ(i, _vector$6.x, _vector$6.y, _vector$6.z);
+			}
+
+			return this;
+		},
+		setX: function setX(index, x) {
+			this.data.array[index * this.data.stride + this.offset] = x;
+			return this;
+		},
+		setY: function setY(index, y) {
+			this.data.array[index * this.data.stride + this.offset + 1] = y;
+			return this;
+		},
+		setZ: function setZ(index, z) {
+			this.data.array[index * this.data.stride + this.offset + 2] = z;
+			return this;
+		},
+		setW: function setW(index, w) {
+			this.data.array[index * this.data.stride + this.offset + 3] = w;
+			return this;
+		},
+		getX: function getX(index) {
+			return this.data.array[index * this.data.stride + this.offset];
+		},
+		getY: function getY(index) {
+			return this.data.array[index * this.data.stride + this.offset + 1];
+		},
+		getZ: function getZ(index) {
+			return this.data.array[index * this.data.stride + this.offset + 2];
+		},
+		getW: function getW(index) {
+			return this.data.array[index * this.data.stride + this.offset + 3];
+		},
+		setXY: function setXY(index, x, y) {
+			index = index * this.data.stride + this.offset;
+			this.data.array[index + 0] = x;
+			this.data.array[index + 1] = y;
+			return this;
+		},
+		setXYZ: function setXYZ(index, x, y, z) {
+			index = index * this.data.stride + this.offset;
+			this.data.array[index + 0] = x;
+			this.data.array[index + 1] = y;
+			this.data.array[index + 2] = z;
+			return this;
+		},
+		setXYZW: function setXYZW(index, x, y, z, w) {
+			index = index * this.data.stride + this.offset;
+			this.data.array[index + 0] = x;
+			this.data.array[index + 1] = y;
+			this.data.array[index + 2] = z;
+			this.data.array[index + 3] = w;
+			return this;
+		},
+		clone: function clone(data) {
+			if (data === undefined) {
+				console.log('THREE.InterleavedBufferAttribute.clone(): Cloning an interlaved buffer attribute will deinterleave buffer data.');
+				var array = [];
+
+				for (var i = 0; i < this.count; i++) {
+					var index = i * this.data.stride + this.offset;
+
+					for (var j = 0; j < this.itemSize; j++) {
+						array.push(this.data.array[index + j]);
+					}
+				}
+
+				return new BufferAttribute(new this.array.constructor(array), this.itemSize, this.normalized);
+			} else {
+				if (data.interleavedBuffers === undefined) {
+					data.interleavedBuffers = {};
+				}
+
+				if (data.interleavedBuffers[this.data.uuid] === undefined) {
+					data.interleavedBuffers[this.data.uuid] = this.data.clone(data);
+				}
+
+				return new InterleavedBufferAttribute(data.interleavedBuffers[this.data.uuid], this.itemSize, this.offset, this.normalized);
+			}
+		},
+		toJSON: function toJSON(data) {
+			if (data === undefined) {
+				console.log('THREE.InterleavedBufferAttribute.toJSON(): Serializing an interlaved buffer attribute will deinterleave buffer data.');
+				var array = [];
+
+				for (var i = 0; i < this.count; i++) {
+					var index = i * this.data.stride + this.offset;
+
+					for (var j = 0; j < this.itemSize; j++) {
+						array.push(this.data.array[index + j]);
+					}
+				} // deinterleave data and save it as an ordinary buffer attribute for now
+
+
+				return {
+					itemSize: this.itemSize,
+					type: this.array.constructor.name,
+					array: array,
+					normalized: this.normalized
+				};
+			} else {
+				// save as true interlaved attribtue
+				if (data.interleavedBuffers === undefined) {
+					data.interleavedBuffers = {};
+				}
+
+				if (data.interleavedBuffers[this.data.uuid] === undefined) {
+					data.interleavedBuffers[this.data.uuid] = this.data.toJSON(data);
+				}
+
+				return {
+					isInterleavedBufferAttribute: true,
+					itemSize: this.itemSize,
+					data: this.data.uuid,
+					offset: this.offset,
+					normalized: this.normalized
+				};
+			}
+		}
+	});
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	map: new THREE.Texture( <Image> ),
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *	rotation: <float>,
+	 *	sizeAttenuation: <bool>
+	 * }
+	 */
+
+	var SpriteMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(SpriteMaterial, _Material);
+
+		function SpriteMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'SpriteMaterial';
+			_this.color = new Color(0xffffff);
+			_this.map = null;
+			_this.alphaMap = null;
+			_this.rotation = 0;
+			_this.sizeAttenuation = true;
+			_this.transparent = true;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = SpriteMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.rotation = source.rotation;
+			this.sizeAttenuation = source.sizeAttenuation;
+			return this;
+		};
+
+		return SpriteMaterial;
+	}(Material);
+
+	SpriteMaterial.prototype.isSpriteMaterial = true;
+
+	var _geometry;
+
+	var _intersectPoint = /*@__PURE__*/new Vector3();
+
+	var _worldScale = /*@__PURE__*/new Vector3();
+
+	var _mvPosition = /*@__PURE__*/new Vector3();
+
+	var _alignedPosition = /*@__PURE__*/new Vector2();
+
+	var _rotatedPosition = /*@__PURE__*/new Vector2();
+
+	var _viewWorldMatrix = /*@__PURE__*/new Matrix4();
+
+	var _vA$1 = /*@__PURE__*/new Vector3();
+
+	var _vB$1 = /*@__PURE__*/new Vector3();
+
+	var _vC$1 = /*@__PURE__*/new Vector3();
+
+	var _uvA$1 = /*@__PURE__*/new Vector2();
+
+	var _uvB$1 = /*@__PURE__*/new Vector2();
+
+	var _uvC$1 = /*@__PURE__*/new Vector2();
+
+	var Sprite = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(Sprite, _Object3D);
+
+		function Sprite(material) {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'Sprite';
+
+			if (_geometry === undefined) {
+				_geometry = new BufferGeometry();
+				var float32Array = new Float32Array([-0.5, -0.5, 0, 0, 0, 0.5, -0.5, 0, 1, 0, 0.5, 0.5, 0, 1, 1, -0.5, 0.5, 0, 0, 1]);
+				var interleavedBuffer = new InterleavedBuffer(float32Array, 5);
+
+				_geometry.setIndex([0, 1, 2, 0, 2, 3]);
+
+				_geometry.setAttribute('position', new InterleavedBufferAttribute(interleavedBuffer, 3, 0, false));
+
+				_geometry.setAttribute('uv', new InterleavedBufferAttribute(interleavedBuffer, 2, 3, false));
+			}
+
+			_this.geometry = _geometry;
+			_this.material = material !== undefined ? material : new SpriteMaterial();
+			_this.center = new Vector2(0.5, 0.5);
+			return _this;
+		}
+
+		var _proto = Sprite.prototype;
+
+		_proto.raycast = function raycast(raycaster, intersects) {
+			if (raycaster.camera === null) {
+				console.error('THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.');
+			}
+
+			_worldScale.setFromMatrixScale(this.matrixWorld);
+
+			_viewWorldMatrix.copy(raycaster.camera.matrixWorld);
+
+			this.modelViewMatrix.multiplyMatrices(raycaster.camera.matrixWorldInverse, this.matrixWorld);
+
+			_mvPosition.setFromMatrixPosition(this.modelViewMatrix);
+
+			if (raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false) {
+				_worldScale.multiplyScalar(-_mvPosition.z);
+			}
+
+			var rotation = this.material.rotation;
+			var sin, cos;
+
+			if (rotation !== 0) {
+				cos = Math.cos(rotation);
+				sin = Math.sin(rotation);
+			}
+
+			var center = this.center;
+			transformVertex(_vA$1.set(-0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
+			transformVertex(_vB$1.set(0.5, -0.5, 0), _mvPosition, center, _worldScale, sin, cos);
+			transformVertex(_vC$1.set(0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);
+
+			_uvA$1.set(0, 0);
+
+			_uvB$1.set(1, 0);
+
+			_uvC$1.set(1, 1); // check first triangle
+
+
+			var intersect = raycaster.ray.intersectTriangle(_vA$1, _vB$1, _vC$1, false, _intersectPoint);
+
+			if (intersect === null) {
+				// check second triangle
+				transformVertex(_vB$1.set(-0.5, 0.5, 0), _mvPosition, center, _worldScale, sin, cos);
+
+				_uvB$1.set(0, 1);
+
+				intersect = raycaster.ray.intersectTriangle(_vA$1, _vC$1, _vB$1, false, _intersectPoint);
+
+				if (intersect === null) {
+					return;
+				}
+			}
+
+			var distance = raycaster.ray.origin.distanceTo(_intersectPoint);
+			if (distance < raycaster.near || distance > raycaster.far) return;
+			intersects.push({
+				distance: distance,
+				point: _intersectPoint.clone(),
+				uv: Triangle.getUV(_intersectPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2()),
+				face: null,
+				object: this
+			});
+		};
+
+		_proto.copy = function copy(source) {
+			_Object3D.prototype.copy.call(this, source);
+
+			if (source.center !== undefined) this.center.copy(source.center);
+			this.material = source.material;
+			return this;
+		};
+
+		return Sprite;
+	}(Object3D);
+
+	Sprite.prototype.isSprite = true;
+
+	function transformVertex(vertexPosition, mvPosition, center, scale, sin, cos) {
+		// compute position in camera space
+		_alignedPosition.subVectors(vertexPosition, center).addScalar(0.5).multiply(scale); // to check if rotation is not zero
+
+
+		if (sin !== undefined) {
+			_rotatedPosition.x = cos * _alignedPosition.x - sin * _alignedPosition.y;
+			_rotatedPosition.y = sin * _alignedPosition.x + cos * _alignedPosition.y;
+		} else {
+			_rotatedPosition.copy(_alignedPosition);
+		}
+
+		vertexPosition.copy(mvPosition);
+		vertexPosition.x += _rotatedPosition.x;
+		vertexPosition.y += _rotatedPosition.y; // transform to world space
+
+		vertexPosition.applyMatrix4(_viewWorldMatrix);
+	}
+
+	var _v1$4 = /*@__PURE__*/new Vector3();
+
+	var _v2$2 = /*@__PURE__*/new Vector3();
+
+	var LOD = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(LOD, _Object3D);
+
+		function LOD() {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this._currentLevel = 0;
+			_this.type = 'LOD';
+			Object.defineProperties(_assertThisInitialized(_this), {
+				levels: {
+					enumerable: true,
+					value: []
+				},
+				isLOD: {
+					value: true
+				}
+			});
+			_this.autoUpdate = true;
+			return _this;
+		}
+
+		var _proto = LOD.prototype;
+
+		_proto.copy = function copy(source) {
+			_Object3D.prototype.copy.call(this, source, false);
+
+			var levels = source.levels;
+
+			for (var i = 0, l = levels.length; i < l; i++) {
+				var level = levels[i];
+				this.addLevel(level.object.clone(), level.distance);
+			}
+
+			this.autoUpdate = source.autoUpdate;
+			return this;
+		};
+
+		_proto.addLevel = function addLevel(object, distance) {
+			if (distance === void 0) {
+				distance = 0;
+			}
+
+			distance = Math.abs(distance);
+			var levels = this.levels;
+			var l;
+
+			for (l = 0; l < levels.length; l++) {
+				if (distance < levels[l].distance) {
+					break;
+				}
+			}
+
+			levels.splice(l, 0, {
+				distance: distance,
+				object: object
+			});
+			this.add(object);
+			return this;
+		};
+
+		_proto.getCurrentLevel = function getCurrentLevel() {
+			return this._currentLevel;
+		};
+
+		_proto.getObjectForDistance = function getObjectForDistance(distance) {
+			var levels = this.levels;
+
+			if (levels.length > 0) {
+				var i, l;
+
+				for (i = 1, l = levels.length; i < l; i++) {
+					if (distance < levels[i].distance) {
+						break;
+					}
+				}
+
+				return levels[i - 1].object;
+			}
+
+			return null;
+		};
+
+		_proto.raycast = function raycast(raycaster, intersects) {
+			var levels = this.levels;
+
+			if (levels.length > 0) {
+				_v1$4.setFromMatrixPosition(this.matrixWorld);
+
+				var distance = raycaster.ray.origin.distanceTo(_v1$4);
+				this.getObjectForDistance(distance).raycast(raycaster, intersects);
+			}
+		};
+
+		_proto.update = function update(camera) {
+			var levels = this.levels;
+
+			if (levels.length > 1) {
+				_v1$4.setFromMatrixPosition(camera.matrixWorld);
+
+				_v2$2.setFromMatrixPosition(this.matrixWorld);
+
+				var distance = _v1$4.distanceTo(_v2$2) / camera.zoom;
+				levels[0].object.visible = true;
+				var i, l;
+
+				for (i = 1, l = levels.length; i < l; i++) {
+					if (distance >= levels[i].distance) {
+						levels[i - 1].object.visible = false;
+						levels[i].object.visible = true;
+					} else {
+						break;
+					}
+				}
+
+				this._currentLevel = i - 1;
+
+				for (; i < l; i++) {
+					levels[i].object.visible = false;
+				}
+			}
+		};
+
+		_proto.toJSON = function toJSON(meta) {
+			var data = _Object3D.prototype.toJSON.call(this, meta);
+
+			if (this.autoUpdate === false) data.object.autoUpdate = false;
+			data.object.levels = [];
+			var levels = this.levels;
+
+			for (var i = 0, l = levels.length; i < l; i++) {
+				var level = levels[i];
+				data.object.levels.push({
+					object: level.object.uuid,
+					distance: level.distance
+				});
+			}
+
+			return data;
+		};
+
+		return LOD;
+	}(Object3D);
+
+	var _basePosition = new Vector3();
+
+	var _skinIndex = new Vector4();
+
+	var _skinWeight = new Vector4();
+
+	var _vector$7 = new Vector3();
+
+	var _matrix$1 = new Matrix4();
+
+	function SkinnedMesh(geometry, material) {
+		Mesh.call(this, geometry, material);
+		this.type = 'SkinnedMesh';
+		this.bindMode = 'attached';
+		this.bindMatrix = new Matrix4();
+		this.bindMatrixInverse = new Matrix4();
+	}
+
+	SkinnedMesh.prototype = Object.assign(Object.create(Mesh.prototype), {
+		constructor: SkinnedMesh,
+		isSkinnedMesh: true,
+		copy: function copy(source) {
+			Mesh.prototype.copy.call(this, source);
+			this.bindMode = source.bindMode;
+			this.bindMatrix.copy(source.bindMatrix);
+			this.bindMatrixInverse.copy(source.bindMatrixInverse);
+			this.skeleton = source.skeleton;
+			return this;
+		},
+		bind: function bind(skeleton, bindMatrix) {
+			this.skeleton = skeleton;
+
+			if (bindMatrix === undefined) {
+				this.updateMatrixWorld(true);
+				this.skeleton.calculateInverses();
+				bindMatrix = this.matrixWorld;
+			}
+
+			this.bindMatrix.copy(bindMatrix);
+			this.bindMatrixInverse.copy(bindMatrix).invert();
+		},
+		pose: function pose() {
+			this.skeleton.pose();
+		},
+		normalizeSkinWeights: function normalizeSkinWeights() {
+			var vector = new Vector4();
+			var skinWeight = this.geometry.attributes.skinWeight;
+
+			for (var i = 0, l = skinWeight.count; i < l; i++) {
+				vector.x = skinWeight.getX(i);
+				vector.y = skinWeight.getY(i);
+				vector.z = skinWeight.getZ(i);
+				vector.w = skinWeight.getW(i);
+				var scale = 1.0 / vector.manhattanLength();
+
+				if (scale !== Infinity) {
+					vector.multiplyScalar(scale);
+				} else {
+					vector.set(1, 0, 0, 0); // do something reasonable
+				}
+
+				skinWeight.setXYZW(i, vector.x, vector.y, vector.z, vector.w);
+			}
+		},
+		updateMatrixWorld: function updateMatrixWorld(force) {
+			Mesh.prototype.updateMatrixWorld.call(this, force);
+
+			if (this.bindMode === 'attached') {
+				this.bindMatrixInverse.copy(this.matrixWorld).invert();
+			} else if (this.bindMode === 'detached') {
+				this.bindMatrixInverse.copy(this.bindMatrix).invert();
+			} else {
+				console.warn('THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode);
+			}
+		},
+		boneTransform: function boneTransform(index, target) {
+			var skeleton = this.skeleton;
+			var geometry = this.geometry;
+
+			_skinIndex.fromBufferAttribute(geometry.attributes.skinIndex, index);
+
+			_skinWeight.fromBufferAttribute(geometry.attributes.skinWeight, index);
+
+			_basePosition.fromBufferAttribute(geometry.attributes.position, index).applyMatrix4(this.bindMatrix);
+
+			target.set(0, 0, 0);
+
+			for (var i = 0; i < 4; i++) {
+				var weight = _skinWeight.getComponent(i);
+
+				if (weight !== 0) {
+					var boneIndex = _skinIndex.getComponent(i);
+
+					_matrix$1.multiplyMatrices(skeleton.bones[boneIndex].matrixWorld, skeleton.boneInverses[boneIndex]);
+
+					target.addScaledVector(_vector$7.copy(_basePosition).applyMatrix4(_matrix$1), weight);
+				}
+			}
+
+			return target.applyMatrix4(this.bindMatrixInverse);
+		}
+	});
+
+	function Bone() {
+		Object3D.call(this);
+		this.type = 'Bone';
+	}
+
+	Bone.prototype = Object.assign(Object.create(Object3D.prototype), {
+		constructor: Bone,
+		isBone: true
+	});
+
+	var _offsetMatrix = /*@__PURE__*/new Matrix4();
+
+	var _identityMatrix = /*@__PURE__*/new Matrix4();
+
+	var Skeleton = /*#__PURE__*/function () {
+		function Skeleton(bones, boneInverses) {
+			if (bones === void 0) {
+				bones = [];
+			}
+
+			if (boneInverses === void 0) {
+				boneInverses = [];
+			}
+
+			this.uuid = MathUtils.generateUUID();
+			this.bones = bones.slice(0);
+			this.boneInverses = boneInverses;
+			this.boneMatrices = null;
+			this.boneTexture = null;
+			this.boneTextureSize = 0;
+			this.frame = -1;
+			this.init();
+		}
+
+		var _proto = Skeleton.prototype;
+
+		_proto.init = function init() {
+			var bones = this.bones;
+			var boneInverses = this.boneInverses;
+			this.boneMatrices = new Float32Array(bones.length * 16); // calculate inverse bone matrices if necessary
+
+			if (boneInverses.length === 0) {
+				this.calculateInverses();
+			} else {
+				// handle special case
+				if (bones.length !== boneInverses.length) {
+					console.warn('THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.');
+					this.boneInverses = [];
+
+					for (var i = 0, il = this.bones.length; i < il; i++) {
+						this.boneInverses.push(new Matrix4());
+					}
+				}
+			}
+		};
+
+		_proto.calculateInverses = function calculateInverses() {
+			this.boneInverses.length = 0;
+
+			for (var i = 0, il = this.bones.length; i < il; i++) {
+				var inverse = new Matrix4();
+
+				if (this.bones[i]) {
+					inverse.copy(this.bones[i].matrixWorld).invert();
+				}
+
+				this.boneInverses.push(inverse);
+			}
+		};
+
+		_proto.pose = function pose() {
+			// recover the bind-time world matrices
+			for (var i = 0, il = this.bones.length; i < il; i++) {
+				var bone = this.bones[i];
+
+				if (bone) {
+					bone.matrixWorld.copy(this.boneInverses[i]).invert();
+				}
+			} // compute the local matrices, positions, rotations and scales
+
+
+			for (var _i = 0, _il = this.bones.length; _i < _il; _i++) {
+				var _bone = this.bones[_i];
+
+				if (_bone) {
+					if (_bone.parent && _bone.parent.isBone) {
+						_bone.matrix.copy(_bone.parent.matrixWorld).invert();
+
+						_bone.matrix.multiply(_bone.matrixWorld);
+					} else {
+						_bone.matrix.copy(_bone.matrixWorld);
+					}
+
+					_bone.matrix.decompose(_bone.position, _bone.quaternion, _bone.scale);
+				}
+			}
+		};
+
+		_proto.update = function update() {
+			var bones = this.bones;
+			var boneInverses = this.boneInverses;
+			var boneMatrices = this.boneMatrices;
+			var boneTexture = this.boneTexture; // flatten bone matrices to array
+
+			for (var i = 0, il = bones.length; i < il; i++) {
+				// compute the offset between the current and the original transform
+				var matrix = bones[i] ? bones[i].matrixWorld : _identityMatrix;
+
+				_offsetMatrix.multiplyMatrices(matrix, boneInverses[i]);
+
+				_offsetMatrix.toArray(boneMatrices, i * 16);
+			}
+
+			if (boneTexture !== null) {
+				boneTexture.needsUpdate = true;
+			}
+		};
+
+		_proto.clone = function clone() {
+			return new Skeleton(this.bones, this.boneInverses);
+		};
+
+		_proto.getBoneByName = function getBoneByName(name) {
+			for (var i = 0, il = this.bones.length; i < il; i++) {
+				var bone = this.bones[i];
+
+				if (bone.name === name) {
+					return bone;
+				}
+			}
+
+			return undefined;
+		};
+
+		_proto.dispose = function dispose() {
+			if (this.boneTexture !== null) {
+				this.boneTexture.dispose();
+				this.boneTexture = null;
+			}
+		};
+
+		_proto.fromJSON = function fromJSON(json, bones) {
+			this.uuid = json.uuid;
+
+			for (var i = 0, l = json.bones.length; i < l; i++) {
+				var uuid = json.bones[i];
+				var bone = bones[uuid];
+
+				if (bone === undefined) {
+					console.warn('THREE.Skeleton: No bone found with UUID:', uuid);
+					bone = new Bone();
+				}
+
+				this.bones.push(bone);
+				this.boneInverses.push(new Matrix4().fromArray(json.boneInverses[i]));
+			}
+
+			this.init();
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = {
+				metadata: {
+					version: 4.5,
+					type: 'Skeleton',
+					generator: 'Skeleton.toJSON'
+				},
+				bones: [],
+				boneInverses: []
+			};
+			data.uuid = this.uuid;
+			var bones = this.bones;
+			var boneInverses = this.boneInverses;
+
+			for (var i = 0, l = bones.length; i < l; i++) {
+				var bone = bones[i];
+				data.bones.push(bone.uuid);
+				var boneInverse = boneInverses[i];
+				data.boneInverses.push(boneInverse.toArray());
+			}
+
+			return data;
+		};
+
+		return Skeleton;
+	}();
+
+	var _instanceLocalMatrix = new Matrix4();
+
+	var _instanceWorldMatrix = new Matrix4();
+
+	var _instanceIntersects = [];
+
+	var _mesh = new Mesh();
+
+	function InstancedMesh(geometry, material, count) {
+		Mesh.call(this, geometry, material);
+		this.instanceMatrix = new BufferAttribute(new Float32Array(count * 16), 16);
+		this.instanceColor = null;
+		this.count = count;
+		this.frustumCulled = false;
+	}
+
+	InstancedMesh.prototype = Object.assign(Object.create(Mesh.prototype), {
+		constructor: InstancedMesh,
+		isInstancedMesh: true,
+		copy: function copy(source) {
+			Mesh.prototype.copy.call(this, source);
+			this.instanceMatrix.copy(source.instanceMatrix);
+			if (source.instanceColor !== null) this.instanceColor = source.instanceColor.clone();
+			this.count = source.count;
+			return this;
+		},
+		getColorAt: function getColorAt(index, color) {
+			color.fromArray(this.instanceColor.array, index * 3);
+		},
+		getMatrixAt: function getMatrixAt(index, matrix) {
+			matrix.fromArray(this.instanceMatrix.array, index * 16);
+		},
+		raycast: function raycast(raycaster, intersects) {
+			var matrixWorld = this.matrixWorld;
+			var raycastTimes = this.count;
+			_mesh.geometry = this.geometry;
+			_mesh.material = this.material;
+			if (_mesh.material === undefined) return;
+
+			for (var instanceId = 0; instanceId < raycastTimes; instanceId++) {
+				// calculate the world matrix for each instance
+				this.getMatrixAt(instanceId, _instanceLocalMatrix);
+
+				_instanceWorldMatrix.multiplyMatrices(matrixWorld, _instanceLocalMatrix); // the mesh represents this single instance
+
+
+				_mesh.matrixWorld = _instanceWorldMatrix;
+
+				_mesh.raycast(raycaster, _instanceIntersects); // process the result of raycast
+
+
+				for (var i = 0, l = _instanceIntersects.length; i < l; i++) {
+					var intersect = _instanceIntersects[i];
+					intersect.instanceId = instanceId;
+					intersect.object = this;
+					intersects.push(intersect);
+				}
+
+				_instanceIntersects.length = 0;
+			}
+		},
+		setColorAt: function setColorAt(index, color) {
+			if (this.instanceColor === null) {
+				this.instanceColor = new BufferAttribute(new Float32Array(this.count * 3), 3);
+			}
+
+			color.toArray(this.instanceColor.array, index * 3);
+		},
+		setMatrixAt: function setMatrixAt(index, matrix) {
+			matrix.toArray(this.instanceMatrix.array, index * 16);
+		},
+		updateMorphTargets: function updateMorphTargets() {},
+		dispose: function dispose() {
+			this.dispatchEvent({
+				type: 'dispose'
+			});
+		}
+	});
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	linewidth: <float>,
+	 *	linecap: "round",
+	 *	linejoin: "round"
+	 * }
+	 */
+
+	var LineBasicMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(LineBasicMaterial, _Material);
+
+		function LineBasicMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'LineBasicMaterial';
+			_this.color = new Color(0xffffff);
+			_this.linewidth = 1;
+			_this.linecap = 'round';
+			_this.linejoin = 'round';
+			_this.morphTargets = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = LineBasicMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.linewidth = source.linewidth;
+			this.linecap = source.linecap;
+			this.linejoin = source.linejoin;
+			this.morphTargets = source.morphTargets;
+			return this;
+		};
+
+		return LineBasicMaterial;
+	}(Material);
+
+	LineBasicMaterial.prototype.isLineBasicMaterial = true;
+
+	var _start = new Vector3();
+
+	var _end = new Vector3();
+
+	var _inverseMatrix$1 = new Matrix4();
+
+	var _ray$1 = new Ray();
+
+	var _sphere$2 = new Sphere();
+
+	function Line(geometry, material) {
+		if (geometry === void 0) {
+			geometry = new BufferGeometry();
+		}
+
+		if (material === void 0) {
+			material = new LineBasicMaterial();
+		}
+
+		Object3D.call(this);
+		this.type = 'Line';
+		this.geometry = geometry;
+		this.material = material;
+		this.updateMorphTargets();
+	}
+
+	Line.prototype = Object.assign(Object.create(Object3D.prototype), {
+		constructor: Line,
+		isLine: true,
+		copy: function copy(source) {
+			Object3D.prototype.copy.call(this, source);
+			this.material = source.material;
+			this.geometry = source.geometry;
+			return this;
+		},
+		computeLineDistances: function computeLineDistances() {
+			var geometry = this.geometry;
+
+			if (geometry.isBufferGeometry) {
+				// we assume non-indexed geometry
+				if (geometry.index === null) {
+					var positionAttribute = geometry.attributes.position;
+					var lineDistances = [0];
+
+					for (var i = 1, l = positionAttribute.count; i < l; i++) {
+						_start.fromBufferAttribute(positionAttribute, i - 1);
+
+						_end.fromBufferAttribute(positionAttribute, i);
+
+						lineDistances[i] = lineDistances[i - 1];
+						lineDistances[i] += _start.distanceTo(_end);
+					}
+
+					geometry.setAttribute('lineDistance', new Float32BufferAttribute(lineDistances, 1));
+				} else {
+					console.warn('THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.');
+				}
+			} else if (geometry.isGeometry) {
+				console.error('THREE.Line.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+			}
+
+			return this;
+		},
+		raycast: function raycast(raycaster, intersects) {
+			var geometry = this.geometry;
+			var matrixWorld = this.matrixWorld;
+			var threshold = raycaster.params.Line.threshold; // Checking boundingSphere distance to ray
+
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
+
+			_sphere$2.copy(geometry.boundingSphere);
+
+			_sphere$2.applyMatrix4(matrixWorld);
+
+			_sphere$2.radius += threshold;
+			if (raycaster.ray.intersectsSphere(_sphere$2) === false) return; //
+
+			_inverseMatrix$1.copy(matrixWorld).invert();
+
+			_ray$1.copy(raycaster.ray).applyMatrix4(_inverseMatrix$1);
+
+			var localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
+			var localThresholdSq = localThreshold * localThreshold;
+			var vStart = new Vector3();
+			var vEnd = new Vector3();
+			var interSegment = new Vector3();
+			var interRay = new Vector3();
+			var step = this.isLineSegments ? 2 : 1;
+
+			if (geometry.isBufferGeometry) {
+				var index = geometry.index;
+				var attributes = geometry.attributes;
+				var positionAttribute = attributes.position;
+
+				if (index !== null) {
+					var indices = index.array;
+
+					for (var i = 0, l = indices.length - 1; i < l; i += step) {
+						var a = indices[i];
+						var b = indices[i + 1];
+						vStart.fromBufferAttribute(positionAttribute, a);
+						vEnd.fromBufferAttribute(positionAttribute, b);
+
+						var distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);
+
+						if (distSq > localThresholdSq) continue;
+						interRay.applyMatrix4(this.matrixWorld); //Move back to world space for distance calculation
+
+						var distance = raycaster.ray.origin.distanceTo(interRay);
+						if (distance < raycaster.near || distance > raycaster.far) continue;
+						intersects.push({
+							distance: distance,
+							// What do we want? intersection point on the ray or on the segment??
+							// point: raycaster.ray.at( distance ),
+							point: interSegment.clone().applyMatrix4(this.matrixWorld),
+							index: i,
+							face: null,
+							faceIndex: null,
+							object: this
+						});
+					}
+				} else {
+					for (var _i = 0, _l = positionAttribute.count - 1; _i < _l; _i += step) {
+						vStart.fromBufferAttribute(positionAttribute, _i);
+						vEnd.fromBufferAttribute(positionAttribute, _i + 1);
+
+						var _distSq = _ray$1.distanceSqToSegment(vStart, vEnd, interRay, interSegment);
+
+						if (_distSq > localThresholdSq) continue;
+						interRay.applyMatrix4(this.matrixWorld); //Move back to world space for distance calculation
+
+						var _distance = raycaster.ray.origin.distanceTo(interRay);
+
+						if (_distance < raycaster.near || _distance > raycaster.far) continue;
+						intersects.push({
+							distance: _distance,
+							// What do we want? intersection point on the ray or on the segment??
+							// point: raycaster.ray.at( distance ),
+							point: interSegment.clone().applyMatrix4(this.matrixWorld),
+							index: _i,
+							face: null,
+							faceIndex: null,
+							object: this
+						});
+					}
+				}
+			} else if (geometry.isGeometry) {
+				console.error('THREE.Line.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+			}
+		},
+		updateMorphTargets: function updateMorphTargets() {
+			var geometry = this.geometry;
+
+			if (geometry.isBufferGeometry) {
+				var morphAttributes = geometry.morphAttributes;
+				var keys = Object.keys(morphAttributes);
+
+				if (keys.length > 0) {
+					var morphAttribute = morphAttributes[keys[0]];
+
+					if (morphAttribute !== undefined) {
+						this.morphTargetInfluences = [];
+						this.morphTargetDictionary = {};
+
+						for (var m = 0, ml = morphAttribute.length; m < ml; m++) {
+							var name = morphAttribute[m].name || String(m);
+							this.morphTargetInfluences.push(0);
+							this.morphTargetDictionary[name] = m;
+						}
+					}
+				}
+			} else {
+				var morphTargets = geometry.morphTargets;
+
+				if (morphTargets !== undefined && morphTargets.length > 0) {
+					console.error('THREE.Line.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.');
+				}
+			}
+		}
+	});
+
+	var _start$1 = new Vector3();
+
+	var _end$1 = new Vector3();
+
+	function LineSegments(geometry, material) {
+		Line.call(this, geometry, material);
+		this.type = 'LineSegments';
+	}
+
+	LineSegments.prototype = Object.assign(Object.create(Line.prototype), {
+		constructor: LineSegments,
+		isLineSegments: true,
+		computeLineDistances: function computeLineDistances() {
+			var geometry = this.geometry;
+
+			if (geometry.isBufferGeometry) {
+				// we assume non-indexed geometry
+				if (geometry.index === null) {
+					var positionAttribute = geometry.attributes.position;
+					var lineDistances = [];
+
+					for (var i = 0, l = positionAttribute.count; i < l; i += 2) {
+						_start$1.fromBufferAttribute(positionAttribute, i);
+
+						_end$1.fromBufferAttribute(positionAttribute, i + 1);
+
+						lineDistances[i] = i === 0 ? 0 : lineDistances[i - 1];
+						lineDistances[i + 1] = lineDistances[i] + _start$1.distanceTo(_end$1);
+					}
+
+					geometry.setAttribute('lineDistance', new Float32BufferAttribute(lineDistances, 1));
+				} else {
+					console.warn('THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.');
+				}
+			} else if (geometry.isGeometry) {
+				console.error('THREE.LineSegments.computeLineDistances() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+			}
+
+			return this;
+		}
+	});
+
+	var LineLoop = /*#__PURE__*/function (_Line) {
+		_inheritsLoose(LineLoop, _Line);
+
+		function LineLoop(geometry, material) {
+			var _this;
+
+			_this = _Line.call(this, geometry, material) || this;
+			_this.type = 'LineLoop';
+			return _this;
+		}
+
+		return LineLoop;
+	}(Line);
+
+	LineLoop.prototype.isLineLoop = true;
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *	map: new THREE.Texture( <Image> ),
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	size: <float>,
+	 *	sizeAttenuation: <bool>
+	 *
+	 *	morphTargets: <bool>
+	 * }
+	 */
+
+	var PointsMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(PointsMaterial, _Material);
+
+		function PointsMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'PointsMaterial';
+			_this.color = new Color(0xffffff);
+			_this.map = null;
+			_this.alphaMap = null;
+			_this.size = 1;
+			_this.sizeAttenuation = true;
+			_this.morphTargets = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = PointsMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.alphaMap = source.alphaMap;
+			this.size = source.size;
+			this.sizeAttenuation = source.sizeAttenuation;
+			this.morphTargets = source.morphTargets;
+			return this;
+		};
+
+		return PointsMaterial;
+	}(Material);
+
+	PointsMaterial.prototype.isPointsMaterial = true;
+
+	var _inverseMatrix$2 = new Matrix4();
+
+	var _ray$2 = new Ray();
+
+	var _sphere$3 = new Sphere();
+
+	var _position$1 = new Vector3();
+
+	function Points(geometry, material) {
+		if (geometry === void 0) {
+			geometry = new BufferGeometry();
+		}
+
+		if (material === void 0) {
+			material = new PointsMaterial();
+		}
+
+		Object3D.call(this);
+		this.type = 'Points';
+		this.geometry = geometry;
+		this.material = material;
+		this.updateMorphTargets();
+	}
+
+	Points.prototype = Object.assign(Object.create(Object3D.prototype), {
+		constructor: Points,
+		isPoints: true,
+		copy: function copy(source) {
+			Object3D.prototype.copy.call(this, source);
+			this.material = source.material;
+			this.geometry = source.geometry;
+			return this;
+		},
+		raycast: function raycast(raycaster, intersects) {
+			var geometry = this.geometry;
+			var matrixWorld = this.matrixWorld;
+			var threshold = raycaster.params.Points.threshold; // Checking boundingSphere distance to ray
+
+			if (geometry.boundingSphere === null) geometry.computeBoundingSphere();
+
+			_sphere$3.copy(geometry.boundingSphere);
+
+			_sphere$3.applyMatrix4(matrixWorld);
+
+			_sphere$3.radius += threshold;
+			if (raycaster.ray.intersectsSphere(_sphere$3) === false) return; //
+
+			_inverseMatrix$2.copy(matrixWorld).invert();
+
+			_ray$2.copy(raycaster.ray).applyMatrix4(_inverseMatrix$2);
+
+			var localThreshold = threshold / ((this.scale.x + this.scale.y + this.scale.z) / 3);
+			var localThresholdSq = localThreshold * localThreshold;
+
+			if (geometry.isBufferGeometry) {
+				var index = geometry.index;
+				var attributes = geometry.attributes;
+				var positionAttribute = attributes.position;
+
+				if (index !== null) {
+					var indices = index.array;
+
+					for (var i = 0, il = indices.length; i < il; i++) {
+						var a = indices[i];
+
+						_position$1.fromBufferAttribute(positionAttribute, a);
+
+						testPoint(_position$1, a, localThresholdSq, matrixWorld, raycaster, intersects, this);
+					}
+				} else {
+					for (var _i = 0, l = positionAttribute.count; _i < l; _i++) {
+						_position$1.fromBufferAttribute(positionAttribute, _i);
+
+						testPoint(_position$1, _i, localThresholdSq, matrixWorld, raycaster, intersects, this);
+					}
+				}
+			} else {
+				console.error('THREE.Points.raycast() no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+			}
+		},
+		updateMorphTargets: function updateMorphTargets() {
+			var geometry = this.geometry;
+
+			if (geometry.isBufferGeometry) {
+				var morphAttributes = geometry.morphAttributes;
+				var keys = Object.keys(morphAttributes);
+
+				if (keys.length > 0) {
+					var morphAttribute = morphAttributes[keys[0]];
+
+					if (morphAttribute !== undefined) {
+						this.morphTargetInfluences = [];
+						this.morphTargetDictionary = {};
+
+						for (var m = 0, ml = morphAttribute.length; m < ml; m++) {
+							var name = morphAttribute[m].name || String(m);
+							this.morphTargetInfluences.push(0);
+							this.morphTargetDictionary[name] = m;
+						}
+					}
+				}
+			} else {
+				var morphTargets = geometry.morphTargets;
+
+				if (morphTargets !== undefined && morphTargets.length > 0) {
+					console.error('THREE.Points.updateMorphTargets() does not support THREE.Geometry. Use THREE.BufferGeometry instead.');
+				}
+			}
+		}
+	});
+
+	function testPoint(point, index, localThresholdSq, matrixWorld, raycaster, intersects, object) {
+		var rayPointDistanceSq = _ray$2.distanceSqToPoint(point);
+
+		if (rayPointDistanceSq < localThresholdSq) {
+			var intersectPoint = new Vector3();
+
+			_ray$2.closestPointToPoint(point, intersectPoint);
+
+			intersectPoint.applyMatrix4(matrixWorld);
+			var distance = raycaster.ray.origin.distanceTo(intersectPoint);
+			if (distance < raycaster.near || distance > raycaster.far) return;
+			intersects.push({
+				distance: distance,
+				distanceToRay: Math.sqrt(rayPointDistanceSq),
+				point: intersectPoint,
+				index: index,
+				face: null,
+				object: object
+			});
+		}
+	}
+
+	var VideoTexture = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(VideoTexture, _Texture);
+
+		function VideoTexture(video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
+			var _this;
+
+			_this = _Texture.call(this, video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) || this;
+			_this.format = format !== undefined ? format : RGBFormat;
+			_this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
+			_this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
+			_this.generateMipmaps = false;
+
+			var scope = _assertThisInitialized(_this);
+
+			function updateVideo() {
+				scope.needsUpdate = true;
+				video.requestVideoFrameCallback(updateVideo);
+			}
+
+			if ('requestVideoFrameCallback' in video) {
+				video.requestVideoFrameCallback(updateVideo);
+			}
+
+			return _this;
+		}
+
+		var _proto = VideoTexture.prototype;
+
+		_proto.clone = function clone() {
+			return new this.constructor(this.image).copy(this);
+		};
+
+		_proto.update = function update() {
+			var video = this.image;
+			var hasVideoFrameCallback = ('requestVideoFrameCallback' in video);
+
+			if (hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA) {
+				this.needsUpdate = true;
+			}
+		};
+
+		return VideoTexture;
+	}(Texture);
+
+	VideoTexture.prototype.isVideoTexture = true;
+
+	var CompressedTexture = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(CompressedTexture, _Texture);
+
+		function CompressedTexture(mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, encoding) {
+			var _this;
+
+			_this = _Texture.call(this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, encoding) || this;
+			_this.image = {
+				width: width,
+				height: height
+			};
+			_this.mipmaps = mipmaps; // no flipping for cube textures
+			// (also flipping doesn't work for compressed textures )
+
+			_this.flipY = false; // can't generate mipmaps for compressed textures
+			// mips must be embedded in DDS files
+
+			_this.generateMipmaps = false;
+			return _this;
+		}
+
+		return CompressedTexture;
+	}(Texture);
+
+	CompressedTexture.prototype.isCompressedTexture = true;
+
+	var CanvasTexture = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(CanvasTexture, _Texture);
+
+		function CanvasTexture(canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) {
+			var _this;
+
+			_this = _Texture.call(this, canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) || this;
+			_this.needsUpdate = true;
+			return _this;
+		}
+
+		return CanvasTexture;
+	}(Texture);
+
+	CanvasTexture.prototype.isCanvasTexture = true;
+
+	var DepthTexture = /*#__PURE__*/function (_Texture) {
+		_inheritsLoose(DepthTexture, _Texture);
+
+		function DepthTexture(width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format) {
+			var _this;
+
+			format = format !== undefined ? format : DepthFormat;
+
+			if (format !== DepthFormat && format !== DepthStencilFormat) {
+				throw new Error('DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat');
+			}
+
+			if (type === undefined && format === DepthFormat) type = UnsignedShortType;
+			if (type === undefined && format === DepthStencilFormat) type = UnsignedInt248Type;
+			_this = _Texture.call(this, null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy) || this;
+			_this.image = {
+				width: width,
+				height: height
+			};
+			_this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
+			_this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
+			_this.flipY = false;
+			_this.generateMipmaps = false;
+			return _this;
+		}
+
+		return DepthTexture;
+	}(Texture);
+
+	DepthTexture.prototype.isDepthTexture = true;
+
+	var CircleGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(CircleGeometry, _BufferGeometry);
+
+		function CircleGeometry(radius, segments, thetaStart, thetaLength) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (segments === void 0) {
+				segments = 8;
+			}
+
+			if (thetaStart === void 0) {
+				thetaStart = 0;
+			}
+
+			if (thetaLength === void 0) {
+				thetaLength = Math.PI * 2;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'CircleGeometry';
+			_this.parameters = {
+				radius: radius,
+				segments: segments,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+			segments = Math.max(3, segments); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // helper variables
+
+			var vertex = new Vector3();
+			var uv = new Vector2(); // center point
+
+			vertices.push(0, 0, 0);
+			normals.push(0, 0, 1);
+			uvs.push(0.5, 0.5);
+
+			for (var s = 0, i = 3; s <= segments; s++, i += 3) {
+				var segment = thetaStart + s / segments * thetaLength; // vertex
+
+				vertex.x = radius * Math.cos(segment);
+				vertex.y = radius * Math.sin(segment);
+				vertices.push(vertex.x, vertex.y, vertex.z); // normal
+
+				normals.push(0, 0, 1); // uvs
+
+				uv.x = (vertices[i] / radius + 1) / 2;
+				uv.y = (vertices[i + 1] / radius + 1) / 2;
+				uvs.push(uv.x, uv.y);
+			} // indices
+
+
+			for (var _i = 1; _i <= segments; _i++) {
+				indices.push(_i, _i + 1, 0);
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+
+			return _this;
+		}
+
+		return CircleGeometry;
+	}(BufferGeometry);
+
+	var CylinderGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(CylinderGeometry, _BufferGeometry);
+
+		function CylinderGeometry(radiusTop, radiusBottom, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength) {
+			var _this;
+
+			if (radiusTop === void 0) {
+				radiusTop = 1;
+			}
+
+			if (radiusBottom === void 0) {
+				radiusBottom = 1;
+			}
+
+			if (height === void 0) {
+				height = 1;
+			}
+
+			if (radialSegments === void 0) {
+				radialSegments = 8;
+			}
+
+			if (heightSegments === void 0) {
+				heightSegments = 1;
+			}
+
+			if (openEnded === void 0) {
+				openEnded = false;
+			}
+
+			if (thetaStart === void 0) {
+				thetaStart = 0;
+			}
+
+			if (thetaLength === void 0) {
+				thetaLength = Math.PI * 2;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'CylinderGeometry';
+			_this.parameters = {
+				radiusTop: radiusTop,
+				radiusBottom: radiusBottom,
+				height: height,
+				radialSegments: radialSegments,
+				heightSegments: heightSegments,
+				openEnded: openEnded,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+
+			var scope = _assertThisInitialized(_this);
+
+			radialSegments = Math.floor(radialSegments);
+			heightSegments = Math.floor(heightSegments); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // helper variables
+
+			var index = 0;
+			var indexArray = [];
+			var halfHeight = height / 2;
+			var groupStart = 0; // generate geometry
+
+			generateTorso();
+
+			if (openEnded === false) {
+				if (radiusTop > 0) generateCap(true);
+				if (radiusBottom > 0) generateCap(false);
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+
+			function generateTorso() {
+				var normal = new Vector3();
+				var vertex = new Vector3();
+				var groupCount = 0; // this will be used to calculate the normal
+
+				var slope = (radiusBottom - radiusTop) / height; // generate vertices, normals and uvs
+
+				for (var y = 0; y <= heightSegments; y++) {
+					var indexRow = [];
+					var v = y / heightSegments; // calculate the radius of the current row
+
+					var radius = v * (radiusBottom - radiusTop) + radiusTop;
+
+					for (var x = 0; x <= radialSegments; x++) {
+						var u = x / radialSegments;
+						var theta = u * thetaLength + thetaStart;
+						var sinTheta = Math.sin(theta);
+						var cosTheta = Math.cos(theta); // vertex
+
+						vertex.x = radius * sinTheta;
+						vertex.y = -v * height + halfHeight;
+						vertex.z = radius * cosTheta;
+						vertices.push(vertex.x, vertex.y, vertex.z); // normal
+
+						normal.set(sinTheta, slope, cosTheta).normalize();
+						normals.push(normal.x, normal.y, normal.z); // uv
+
+						uvs.push(u, 1 - v); // save index of vertex in respective row
+
+						indexRow.push(index++);
+					} // now save vertices of the row in our index array
+
+
+					indexArray.push(indexRow);
+				} // generate indices
+
+
+				for (var _x = 0; _x < radialSegments; _x++) {
+					for (var _y = 0; _y < heightSegments; _y++) {
+						// we use the index array to access the correct indices
+						var a = indexArray[_y][_x];
+						var b = indexArray[_y + 1][_x];
+						var c = indexArray[_y + 1][_x + 1];
+						var d = indexArray[_y][_x + 1]; // faces
+
+						indices.push(a, b, d);
+						indices.push(b, c, d); // update group counter
+
+						groupCount += 6;
+					}
+				} // add a group to the geometry. this will ensure multi material support
+
+
+				scope.addGroup(groupStart, groupCount, 0); // calculate new start value for groups
+
+				groupStart += groupCount;
+			}
+
+			function generateCap(top) {
+				// save the index of the first center vertex
+				var centerIndexStart = index;
+				var uv = new Vector2();
+				var vertex = new Vector3();
+				var groupCount = 0;
+				var radius = top === true ? radiusTop : radiusBottom;
+				var sign = top === true ? 1 : -1; // first we generate the center vertex data of the cap.
+				// because the geometry needs one set of uvs per face,
+				// we must generate a center vertex per face/segment
+
+				for (var x = 1; x <= radialSegments; x++) {
+					// vertex
+					vertices.push(0, halfHeight * sign, 0); // normal
+
+					normals.push(0, sign, 0); // uv
+
+					uvs.push(0.5, 0.5); // increase index
+
+					index++;
+				} // save the index of the last center vertex
+
+
+				var centerIndexEnd = index; // now we generate the surrounding vertices, normals and uvs
+
+				for (var _x2 = 0; _x2 <= radialSegments; _x2++) {
+					var u = _x2 / radialSegments;
+					var theta = u * thetaLength + thetaStart;
+					var cosTheta = Math.cos(theta);
+					var sinTheta = Math.sin(theta); // vertex
+
+					vertex.x = radius * sinTheta;
+					vertex.y = halfHeight * sign;
+					vertex.z = radius * cosTheta;
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
+
+					normals.push(0, sign, 0); // uv
+
+					uv.x = cosTheta * 0.5 + 0.5;
+					uv.y = sinTheta * 0.5 * sign + 0.5;
+					uvs.push(uv.x, uv.y); // increase index
+
+					index++;
+				} // generate indices
+
+
+				for (var _x3 = 0; _x3 < radialSegments; _x3++) {
+					var c = centerIndexStart + _x3;
+					var i = centerIndexEnd + _x3;
+
+					if (top === true) {
+						// face top
+						indices.push(i, i + 1, c);
+					} else {
+						// face bottom
+						indices.push(i + 1, i, c);
+					}
+
+					groupCount += 3;
+				} // add a group to the geometry. this will ensure multi material support
+
+
+				scope.addGroup(groupStart, groupCount, top === true ? 1 : 2); // calculate new start value for groups
+
+				groupStart += groupCount;
+			}
+
+			return _this;
+		}
+
+		return CylinderGeometry;
+	}(BufferGeometry);
+
+	var ConeGeometry = /*#__PURE__*/function (_CylinderGeometry) {
+		_inheritsLoose(ConeGeometry, _CylinderGeometry);
+
+		function ConeGeometry(radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (height === void 0) {
+				height = 1;
+			}
+
+			if (radialSegments === void 0) {
+				radialSegments = 8;
+			}
+
+			if (heightSegments === void 0) {
+				heightSegments = 1;
+			}
+
+			if (openEnded === void 0) {
+				openEnded = false;
+			}
+
+			if (thetaStart === void 0) {
+				thetaStart = 0;
+			}
+
+			if (thetaLength === void 0) {
+				thetaLength = Math.PI * 2;
+			}
+
+			_this = _CylinderGeometry.call(this, 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength) || this;
+			_this.type = 'ConeGeometry';
+			_this.parameters = {
+				radius: radius,
+				height: height,
+				radialSegments: radialSegments,
+				heightSegments: heightSegments,
+				openEnded: openEnded,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+			return _this;
+		}
+
+		return ConeGeometry;
+	}(CylinderGeometry);
+
+	var PolyhedronGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(PolyhedronGeometry, _BufferGeometry);
+
+		function PolyhedronGeometry(vertices, indices, radius, detail) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (detail === void 0) {
+				detail = 0;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'PolyhedronGeometry';
+			_this.parameters = {
+				vertices: vertices,
+				indices: indices,
+				radius: radius,
+				detail: detail
+			}; // default buffer data
+
+			var vertexBuffer = [];
+			var uvBuffer = []; // the subdivision creates the vertex buffer data
+
+			subdivide(detail); // all vertices should lie on a conceptual sphere with a given radius
+
+			applyRadius(radius); // finally, create the uv data
+
+			generateUVs(); // build non-indexed geometry
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertexBuffer, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(vertexBuffer.slice(), 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvBuffer, 2));
+
+			if (detail === 0) {
+				_this.computeVertexNormals(); // flat normals
+
+			} else {
+				_this.normalizeNormals(); // smooth normals
+
+			} // helper functions
+
+
+			function subdivide(detail) {
+				var a = new Vector3();
+				var b = new Vector3();
+				var c = new Vector3(); // iterate over all faces and apply a subdivison with the given detail value
+
+				for (var i = 0; i < indices.length; i += 3) {
+					// get the vertices of the face
+					getVertexByIndex(indices[i + 0], a);
+					getVertexByIndex(indices[i + 1], b);
+					getVertexByIndex(indices[i + 2], c); // perform subdivision
+
+					subdivideFace(a, b, c, detail);
+				}
+			}
+
+			function subdivideFace(a, b, c, detail) {
+				var cols = detail + 1; // we use this multidimensional array as a data structure for creating the subdivision
+
+				var v = []; // construct all of the vertices for this subdivision
+
+				for (var i = 0; i <= cols; i++) {
+					v[i] = [];
+					var aj = a.clone().lerp(c, i / cols);
+					var bj = b.clone().lerp(c, i / cols);
+					var rows = cols - i;
+
+					for (var j = 0; j <= rows; j++) {
+						if (j === 0 && i === cols) {
+							v[i][j] = aj;
+						} else {
+							v[i][j] = aj.clone().lerp(bj, j / rows);
+						}
+					}
+				} // construct all of the faces
+
+
+				for (var _i = 0; _i < cols; _i++) {
+					for (var _j = 0; _j < 2 * (cols - _i) - 1; _j++) {
+						var k = Math.floor(_j / 2);
+
+						if (_j % 2 === 0) {
+							pushVertex(v[_i][k + 1]);
+							pushVertex(v[_i + 1][k]);
+							pushVertex(v[_i][k]);
+						} else {
+							pushVertex(v[_i][k + 1]);
+							pushVertex(v[_i + 1][k + 1]);
+							pushVertex(v[_i + 1][k]);
+						}
+					}
+				}
+			}
+
+			function applyRadius(radius) {
+				var vertex = new Vector3(); // iterate over the entire buffer and apply the radius to each vertex
+
+				for (var i = 0; i < vertexBuffer.length; i += 3) {
+					vertex.x = vertexBuffer[i + 0];
+					vertex.y = vertexBuffer[i + 1];
+					vertex.z = vertexBuffer[i + 2];
+					vertex.normalize().multiplyScalar(radius);
+					vertexBuffer[i + 0] = vertex.x;
+					vertexBuffer[i + 1] = vertex.y;
+					vertexBuffer[i + 2] = vertex.z;
+				}
+			}
+
+			function generateUVs() {
+				var vertex = new Vector3();
+
+				for (var i = 0; i < vertexBuffer.length; i += 3) {
+					vertex.x = vertexBuffer[i + 0];
+					vertex.y = vertexBuffer[i + 1];
+					vertex.z = vertexBuffer[i + 2];
+					var u = azimuth(vertex) / 2 / Math.PI + 0.5;
+					var v = inclination(vertex) / Math.PI + 0.5;
+					uvBuffer.push(u, 1 - v);
+				}
+
+				correctUVs();
+				correctSeam();
+			}
+
+			function correctSeam() {
+				// handle case when face straddles the seam, see #3269
+				for (var i = 0; i < uvBuffer.length; i += 6) {
+					// uv data of a single face
+					var x0 = uvBuffer[i + 0];
+					var x1 = uvBuffer[i + 2];
+					var x2 = uvBuffer[i + 4];
+					var max = Math.max(x0, x1, x2);
+					var min = Math.min(x0, x1, x2); // 0.9 is somewhat arbitrary
+
+					if (max > 0.9 && min < 0.1) {
+						if (x0 < 0.2) uvBuffer[i + 0] += 1;
+						if (x1 < 0.2) uvBuffer[i + 2] += 1;
+						if (x2 < 0.2) uvBuffer[i + 4] += 1;
+					}
+				}
+			}
+
+			function pushVertex(vertex) {
+				vertexBuffer.push(vertex.x, vertex.y, vertex.z);
+			}
+
+			function getVertexByIndex(index, vertex) {
+				var stride = index * 3;
+				vertex.x = vertices[stride + 0];
+				vertex.y = vertices[stride + 1];
+				vertex.z = vertices[stride + 2];
+			}
+
+			function correctUVs() {
+				var a = new Vector3();
+				var b = new Vector3();
+				var c = new Vector3();
+				var centroid = new Vector3();
+				var uvA = new Vector2();
+				var uvB = new Vector2();
+				var uvC = new Vector2();
+
+				for (var i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6) {
+					a.set(vertexBuffer[i + 0], vertexBuffer[i + 1], vertexBuffer[i + 2]);
+					b.set(vertexBuffer[i + 3], vertexBuffer[i + 4], vertexBuffer[i + 5]);
+					c.set(vertexBuffer[i + 6], vertexBuffer[i + 7], vertexBuffer[i + 8]);
+					uvA.set(uvBuffer[j + 0], uvBuffer[j + 1]);
+					uvB.set(uvBuffer[j + 2], uvBuffer[j + 3]);
+					uvC.set(uvBuffer[j + 4], uvBuffer[j + 5]);
+					centroid.copy(a).add(b).add(c).divideScalar(3);
+					var azi = azimuth(centroid);
+					correctUV(uvA, j + 0, a, azi);
+					correctUV(uvB, j + 2, b, azi);
+					correctUV(uvC, j + 4, c, azi);
+				}
+			}
+
+			function correctUV(uv, stride, vector, azimuth) {
+				if (azimuth < 0 && uv.x === 1) {
+					uvBuffer[stride] = uv.x - 1;
+				}
+
+				if (vector.x === 0 && vector.z === 0) {
+					uvBuffer[stride] = azimuth / 2 / Math.PI + 0.5;
+				}
+			} // Angle around the Y axis, counter-clockwise when looking from above.
+
+
+			function azimuth(vector) {
+				return Math.atan2(vector.z, -vector.x);
+			} // Angle above the XZ plane.
+
+
+			function inclination(vector) {
+				return Math.atan2(-vector.y, Math.sqrt(vector.x * vector.x + vector.z * vector.z));
+			}
+
+			return _this;
+		}
+
+		return PolyhedronGeometry;
+	}(BufferGeometry);
+
+	var DodecahedronGeometry = /*#__PURE__*/function (_PolyhedronGeometry) {
+		_inheritsLoose(DodecahedronGeometry, _PolyhedronGeometry);
+
+		function DodecahedronGeometry(radius, detail) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (detail === void 0) {
+				detail = 0;
+			}
+
+			var t = (1 + Math.sqrt(5)) / 2;
+			var r = 1 / t;
+			var vertices = [// (±1, ±1, ±1)
+			-1, -1, -1, -1, -1, 1, -1, 1, -1, -1, 1, 1, 1, -1, -1, 1, -1, 1, 1, 1, -1, 1, 1, 1, // (0, ±1/φ, ±φ)
+			0, -r, -t, 0, -r, t, 0, r, -t, 0, r, t, // (±1/φ, ±φ, 0)
+			-r, -t, 0, -r, t, 0, r, -t, 0, r, t, 0, // (±φ, 0, ±1/φ)
+			-t, 0, -r, t, 0, -r, -t, 0, r, t, 0, r];
+			var indices = [3, 11, 7, 3, 7, 15, 3, 15, 13, 7, 19, 17, 7, 17, 6, 7, 6, 15, 17, 4, 8, 17, 8, 10, 17, 10, 6, 8, 0, 16, 8, 16, 2, 8, 2, 10, 0, 12, 1, 0, 1, 18, 0, 18, 16, 6, 10, 2, 6, 2, 13, 6, 13, 15, 2, 16, 18, 2, 18, 3, 2, 3, 13, 18, 1, 9, 18, 9, 11, 18, 11, 3, 4, 14, 12, 4, 12, 0, 4, 0, 8, 11, 9, 5, 11, 5, 19, 11, 19, 7, 19, 5, 14, 19, 14, 4, 19, 4, 17, 1, 12, 14, 1, 14, 5, 1, 5, 9];
+			_this = _PolyhedronGeometry.call(this, vertices, indices, radius, detail) || this;
+			_this.type = 'DodecahedronGeometry';
+			_this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+			return _this;
+		}
+
+		return DodecahedronGeometry;
+	}(PolyhedronGeometry);
+
+	var _v0$2 = new Vector3();
+
+	var _v1$5 = new Vector3();
+
+	var _normal$1 = new Vector3();
+
+	var _triangle = new Triangle();
+
+	var EdgesGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(EdgesGeometry, _BufferGeometry);
+
+		function EdgesGeometry(geometry, thresholdAngle) {
+			var _this;
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'EdgesGeometry';
+			_this.parameters = {
+				thresholdAngle: thresholdAngle
+			};
+			thresholdAngle = thresholdAngle !== undefined ? thresholdAngle : 1;
+
+			if (geometry.isGeometry === true) {
+				console.error('THREE.EdgesGeometry no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+				return _assertThisInitialized(_this);
+			}
+
+			var precisionPoints = 4;
+			var precision = Math.pow(10, precisionPoints);
+			var thresholdDot = Math.cos(MathUtils.DEG2RAD * thresholdAngle);
+			var indexAttr = geometry.getIndex();
+			var positionAttr = geometry.getAttribute('position');
+			var indexCount = indexAttr ? indexAttr.count : positionAttr.count;
+			var indexArr = [0, 0, 0];
+			var vertKeys = ['a', 'b', 'c'];
+			var hashes = new Array(3);
+			var edgeData = {};
+			var vertices = [];
+
+			for (var i = 0; i < indexCount; i += 3) {
+				if (indexAttr) {
+					indexArr[0] = indexAttr.getX(i);
+					indexArr[1] = indexAttr.getX(i + 1);
+					indexArr[2] = indexAttr.getX(i + 2);
+				} else {
+					indexArr[0] = i;
+					indexArr[1] = i + 1;
+					indexArr[2] = i + 2;
+				}
+
+				var a = _triangle.a,
+						b = _triangle.b,
+						c = _triangle.c;
+				a.fromBufferAttribute(positionAttr, indexArr[0]);
+				b.fromBufferAttribute(positionAttr, indexArr[1]);
+				c.fromBufferAttribute(positionAttr, indexArr[2]);
+
+				_triangle.getNormal(_normal$1); // create hashes for the edge from the vertices
+
+
+				hashes[0] = Math.round(a.x * precision) + "," + Math.round(a.y * precision) + "," + Math.round(a.z * precision);
+				hashes[1] = Math.round(b.x * precision) + "," + Math.round(b.y * precision) + "," + Math.round(b.z * precision);
+				hashes[2] = Math.round(c.x * precision) + "," + Math.round(c.y * precision) + "," + Math.round(c.z * precision); // skip degenerate triangles
+
+				if (hashes[0] === hashes[1] || hashes[1] === hashes[2] || hashes[2] === hashes[0]) {
+					continue;
+				} // iterate over every edge
+
+
+				for (var j = 0; j < 3; j++) {
+					// get the first and next vertex making up the edge
+					var jNext = (j + 1) % 3;
+					var vecHash0 = hashes[j];
+					var vecHash1 = hashes[jNext];
+					var v0 = _triangle[vertKeys[j]];
+					var v1 = _triangle[vertKeys[jNext]];
+					var hash = vecHash0 + "_" + vecHash1;
+					var reverseHash = vecHash1 + "_" + vecHash0;
+
+					if (reverseHash in edgeData && edgeData[reverseHash]) {
+						// if we found a sibling edge add it into the vertex array if
+						// it meets the angle threshold and delete the edge from the map.
+						if (_normal$1.dot(edgeData[reverseHash].normal) <= thresholdDot) {
+							vertices.push(v0.x, v0.y, v0.z);
+							vertices.push(v1.x, v1.y, v1.z);
+						}
+
+						edgeData[reverseHash] = null;
+					} else if (!(hash in edgeData)) {
+						// if we've already got an edge here then skip adding a new one
+						edgeData[hash] = {
+							index0: indexArr[j],
+							index1: indexArr[jNext],
+							normal: _normal$1.clone()
+						};
+					}
+				}
+			} // iterate over all remaining, unmatched edges and add them to the vertex array
+
+
+			for (var key in edgeData) {
+				if (edgeData[key]) {
+					var _edgeData$key = edgeData[key],
+							index0 = _edgeData$key.index0,
+							index1 = _edgeData$key.index1;
+
+					_v0$2.fromBufferAttribute(positionAttr, index0);
+
+					_v1$5.fromBufferAttribute(positionAttr, index1);
+
+					vertices.push(_v0$2.x, _v0$2.y, _v0$2.z);
+					vertices.push(_v1$5.x, _v1$5.y, _v1$5.z);
+				}
+			}
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			return _this;
+		}
+
+		return EdgesGeometry;
+	}(BufferGeometry);
+
+	/**
+	 * Port from https://github.com/mapbox/earcut (v2.2.2)
+	 */
+	var Earcut = {
+		triangulate: function triangulate(data, holeIndices, dim) {
+			dim = dim || 2;
+			var hasHoles = holeIndices && holeIndices.length;
+			var outerLen = hasHoles ? holeIndices[0] * dim : data.length;
+			var outerNode = linkedList(data, 0, outerLen, dim, true);
+			var triangles = [];
+			if (!outerNode || outerNode.next === outerNode.prev) return triangles;
+			var minX, minY, maxX, maxY, x, y, invSize;
+			if (hasHoles) outerNode = eliminateHoles(data, holeIndices, outerNode, dim); // if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
+
+			if (data.length > 80 * dim) {
+				minX = maxX = data[0];
+				minY = maxY = data[1];
+
+				for (var i = dim; i < outerLen; i += dim) {
+					x = data[i];
+					y = data[i + 1];
+					if (x < minX) minX = x;
+					if (y < minY) minY = y;
+					if (x > maxX) maxX = x;
+					if (y > maxY) maxY = y;
+				} // minX, minY and invSize are later used to transform coords into integers for z-order calculation
+
+
+				invSize = Math.max(maxX - minX, maxY - minY);
+				invSize = invSize !== 0 ? 1 / invSize : 0;
+			}
+
+			earcutLinked(outerNode, triangles, dim, minX, minY, invSize);
+			return triangles;
+		}
+	}; // create a circular doubly linked list from polygon points in the specified winding order
+
+	function linkedList(data, start, end, dim, clockwise) {
+		var i, last;
+
+		if (clockwise === signedArea(data, start, end, dim) > 0) {
+			for (i = start; i < end; i += dim) {
+				last = insertNode(i, data[i], data[i + 1], last);
+			}
+		} else {
+			for (i = end - dim; i >= start; i -= dim) {
+				last = insertNode(i, data[i], data[i + 1], last);
+			}
+		}
+
+		if (last && equals(last, last.next)) {
+			removeNode(last);
+			last = last.next;
+		}
+
+		return last;
+	} // eliminate colinear or duplicate points
+
+
+	function filterPoints(start, end) {
+		if (!start) return start;
+		if (!end) end = start;
+		var p = start,
+				again;
+
+		do {
+			again = false;
+
+			if (!p.steiner && (equals(p, p.next) || area(p.prev, p, p.next) === 0)) {
+				removeNode(p);
+				p = end = p.prev;
+				if (p === p.next) break;
+				again = true;
+			} else {
+				p = p.next;
+			}
+		} while (again || p !== end);
+
+		return end;
+	} // main ear slicing loop which triangulates a polygon (given as a linked list)
+
+
+	function earcutLinked(ear, triangles, dim, minX, minY, invSize, pass) {
+		if (!ear) return; // interlink polygon nodes in z-order
+
+		if (!pass && invSize) indexCurve(ear, minX, minY, invSize);
+		var stop = ear,
+				prev,
+				next; // iterate through ears, slicing them one by one
+
+		while (ear.prev !== ear.next) {
+			prev = ear.prev;
+			next = ear.next;
+
+			if (invSize ? isEarHashed(ear, minX, minY, invSize) : isEar(ear)) {
+				// cut off the triangle
+				triangles.push(prev.i / dim);
+				triangles.push(ear.i / dim);
+				triangles.push(next.i / dim);
+				removeNode(ear); // skipping the next vertex leads to less sliver triangles
+
+				ear = next.next;
+				stop = next.next;
+				continue;
+			}
+
+			ear = next; // if we looped through the whole remaining polygon and can't find any more ears
+
+			if (ear === stop) {
+				// try filtering points and slicing again
+				if (!pass) {
+					earcutLinked(filterPoints(ear), triangles, dim, minX, minY, invSize, 1); // if this didn't work, try curing all small self-intersections locally
+				} else if (pass === 1) {
+					ear = cureLocalIntersections(filterPoints(ear), triangles, dim);
+					earcutLinked(ear, triangles, dim, minX, minY, invSize, 2); // as a last resort, try splitting the remaining polygon into two
+				} else if (pass === 2) {
+					splitEarcut(ear, triangles, dim, minX, minY, invSize);
+				}
+
+				break;
+			}
+		}
+	} // check whether a polygon node forms a valid ear with adjacent nodes
+
+
+	function isEar(ear) {
+		var a = ear.prev,
+				b = ear,
+				c = ear.next;
+		if (area(a, b, c) >= 0) return false; // reflex, can't be an ear
+		// now make sure we don't have other points inside the potential ear
+
+		var p = ear.next.next;
+
+		while (p !== ear.prev) {
+			if (pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
+			p = p.next;
+		}
+
+		return true;
+	}
+
+	function isEarHashed(ear, minX, minY, invSize) {
+		var a = ear.prev,
+				b = ear,
+				c = ear.next;
+		if (area(a, b, c) >= 0) return false; // reflex, can't be an ear
+		// triangle bbox; min & max are calculated like this for speed
+
+		var minTX = a.x < b.x ? a.x < c.x ? a.x : c.x : b.x < c.x ? b.x : c.x,
+				minTY = a.y < b.y ? a.y < c.y ? a.y : c.y : b.y < c.y ? b.y : c.y,
+				maxTX = a.x > b.x ? a.x > c.x ? a.x : c.x : b.x > c.x ? b.x : c.x,
+				maxTY = a.y > b.y ? a.y > c.y ? a.y : c.y : b.y > c.y ? b.y : c.y; // z-order range for the current triangle bbox;
+
+		var minZ = zOrder(minTX, minTY, minX, minY, invSize),
+				maxZ = zOrder(maxTX, maxTY, minX, minY, invSize);
+		var p = ear.prevZ,
+				n = ear.nextZ; // look for points inside the triangle in both directions
+
+		while (p && p.z >= minZ && n && n.z <= maxZ) {
+			if (p !== ear.prev && p !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
+			p = p.prevZ;
+			if (n !== ear.prev && n !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
+			n = n.nextZ;
+		} // look for remaining points in decreasing z-order
+
+
+		while (p && p.z >= minZ) {
+			if (p !== ear.prev && p !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, p.x, p.y) && area(p.prev, p, p.next) >= 0) return false;
+			p = p.prevZ;
+		} // look for remaining points in increasing z-order
+
+
+		while (n && n.z <= maxZ) {
+			if (n !== ear.prev && n !== ear.next && pointInTriangle(a.x, a.y, b.x, b.y, c.x, c.y, n.x, n.y) && area(n.prev, n, n.next) >= 0) return false;
+			n = n.nextZ;
+		}
+
+		return true;
+	} // go through all polygon nodes and cure small local self-intersections
+
+
+	function cureLocalIntersections(start, triangles, dim) {
+		var p = start;
+
+		do {
+			var a = p.prev,
+					b = p.next.next;
+
+			if (!equals(a, b) && intersects(a, p, p.next, b) && locallyInside(a, b) && locallyInside(b, a)) {
+				triangles.push(a.i / dim);
+				triangles.push(p.i / dim);
+				triangles.push(b.i / dim); // remove two nodes involved
+
+				removeNode(p);
+				removeNode(p.next);
+				p = start = b;
+			}
+
+			p = p.next;
+		} while (p !== start);
+
+		return filterPoints(p);
+	} // try splitting polygon into two and triangulate them independently
+
+
+	function splitEarcut(start, triangles, dim, minX, minY, invSize) {
+		// look for a valid diagonal that divides the polygon into two
+		var a = start;
+
+		do {
+			var b = a.next.next;
+
+			while (b !== a.prev) {
+				if (a.i !== b.i && isValidDiagonal(a, b)) {
+					// split the polygon in two by the diagonal
+					var c = splitPolygon(a, b); // filter colinear points around the cuts
+
+					a = filterPoints(a, a.next);
+					c = filterPoints(c, c.next); // run earcut on each half
+
+					earcutLinked(a, triangles, dim, minX, minY, invSize);
+					earcutLinked(c, triangles, dim, minX, minY, invSize);
+					return;
+				}
+
+				b = b.next;
+			}
+
+			a = a.next;
+		} while (a !== start);
+	} // link every hole into the outer loop, producing a single-ring polygon without holes
+
+
+	function eliminateHoles(data, holeIndices, outerNode, dim) {
+		var queue = [];
+		var i, len, start, end, list;
+
+		for (i = 0, len = holeIndices.length; i < len; i++) {
+			start = holeIndices[i] * dim;
+			end = i < len - 1 ? holeIndices[i + 1] * dim : data.length;
+			list = linkedList(data, start, end, dim, false);
+			if (list === list.next) list.steiner = true;
+			queue.push(getLeftmost(list));
+		}
+
+		queue.sort(compareX); // process holes from left to right
+
+		for (i = 0; i < queue.length; i++) {
+			eliminateHole(queue[i], outerNode);
+			outerNode = filterPoints(outerNode, outerNode.next);
+		}
+
+		return outerNode;
+	}
+
+	function compareX(a, b) {
+		return a.x - b.x;
+	} // find a bridge between vertices that connects hole with an outer ring and and link it
+
+
+	function eliminateHole(hole, outerNode) {
+		outerNode = findHoleBridge(hole, outerNode);
+
+		if (outerNode) {
+			var b = splitPolygon(outerNode, hole); // filter collinear points around the cuts
+
+			filterPoints(outerNode, outerNode.next);
+			filterPoints(b, b.next);
+		}
+	} // David Eberly's algorithm for finding a bridge between hole and outer polygon
+
+
+	function findHoleBridge(hole, outerNode) {
+		var p = outerNode;
+		var hx = hole.x;
+		var hy = hole.y;
+		var qx = -Infinity,
+				m; // find a segment intersected by a ray from the hole's leftmost point to the left;
+		// segment's endpoint with lesser x will be potential connection point
+
+		do {
+			if (hy <= p.y && hy >= p.next.y && p.next.y !== p.y) {
+				var x = p.x + (hy - p.y) * (p.next.x - p.x) / (p.next.y - p.y);
+
+				if (x <= hx && x > qx) {
+					qx = x;
+
+					if (x === hx) {
+						if (hy === p.y) return p;
+						if (hy === p.next.y) return p.next;
+					}
+
+					m = p.x < p.next.x ? p : p.next;
+				}
+			}
+
+			p = p.next;
+		} while (p !== outerNode);
+
+		if (!m) return null;
+		if (hx === qx) return m; // hole touches outer segment; pick leftmost endpoint
+		// look for points inside the triangle of hole point, segment intersection and endpoint;
+		// if there are no points found, we have a valid connection;
+		// otherwise choose the point of the minimum angle with the ray as connection point
+
+		var stop = m,
+				mx = m.x,
+				my = m.y;
+		var tanMin = Infinity,
+				tan;
+		p = m;
+
+		do {
+			if (hx >= p.x && p.x >= mx && hx !== p.x && pointInTriangle(hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y)) {
+				tan = Math.abs(hy - p.y) / (hx - p.x); // tangential
+
+				if (locallyInside(p, hole) && (tan < tanMin || tan === tanMin && (p.x > m.x || p.x === m.x && sectorContainsSector(m, p)))) {
+					m = p;
+					tanMin = tan;
+				}
+			}
+
+			p = p.next;
+		} while (p !== stop);
+
+		return m;
+	} // whether sector in vertex m contains sector in vertex p in the same coordinates
+
+
+	function sectorContainsSector(m, p) {
+		return area(m.prev, m, p.prev) < 0 && area(p.next, m, m.next) < 0;
+	} // interlink polygon nodes in z-order
+
+
+	function indexCurve(start, minX, minY, invSize) {
+		var p = start;
+
+		do {
+			if (p.z === null) p.z = zOrder(p.x, p.y, minX, minY, invSize);
+			p.prevZ = p.prev;
+			p.nextZ = p.next;
+			p = p.next;
+		} while (p !== start);
+
+		p.prevZ.nextZ = null;
+		p.prevZ = null;
+		sortLinked(p);
+	} // Simon Tatham's linked list merge sort algorithm
+	// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
+
+
+	function sortLinked(list) {
+		var i,
+				p,
+				q,
+				e,
+				tail,
+				numMerges,
+				pSize,
+				qSize,
+				inSize = 1;
+
+		do {
+			p = list;
+			list = null;
+			tail = null;
+			numMerges = 0;
+
+			while (p) {
+				numMerges++;
+				q = p;
+				pSize = 0;
+
+				for (i = 0; i < inSize; i++) {
+					pSize++;
+					q = q.nextZ;
+					if (!q) break;
+				}
+
+				qSize = inSize;
+
+				while (pSize > 0 || qSize > 0 && q) {
+					if (pSize !== 0 && (qSize === 0 || !q || p.z <= q.z)) {
+						e = p;
+						p = p.nextZ;
+						pSize--;
+					} else {
+						e = q;
+						q = q.nextZ;
+						qSize--;
+					}
+
+					if (tail) tail.nextZ = e;else list = e;
+					e.prevZ = tail;
+					tail = e;
+				}
+
+				p = q;
+			}
+
+			tail.nextZ = null;
+			inSize *= 2;
+		} while (numMerges > 1);
+
+		return list;
+	} // z-order of a point given coords and inverse of the longer side of data bbox
+
+
+	function zOrder(x, y, minX, minY, invSize) {
+		// coords are transformed into non-negative 15-bit integer range
+		x = 32767 * (x - minX) * invSize;
+		y = 32767 * (y - minY) * invSize;
+		x = (x | x << 8) & 0x00FF00FF;
+		x = (x | x << 4) & 0x0F0F0F0F;
+		x = (x | x << 2) & 0x33333333;
+		x = (x | x << 1) & 0x55555555;
+		y = (y | y << 8) & 0x00FF00FF;
+		y = (y | y << 4) & 0x0F0F0F0F;
+		y = (y | y << 2) & 0x33333333;
+		y = (y | y << 1) & 0x55555555;
+		return x | y << 1;
+	} // find the leftmost node of a polygon ring
+
+
+	function getLeftmost(start) {
+		var p = start,
+				leftmost = start;
+
+		do {
+			if (p.x < leftmost.x || p.x === leftmost.x && p.y < leftmost.y) leftmost = p;
+			p = p.next;
+		} while (p !== start);
+
+		return leftmost;
+	} // check if a point lies within a convex triangle
+
+
+	function pointInTriangle(ax, ay, bx, by, cx, cy, px, py) {
+		return (cx - px) * (ay - py) - (ax - px) * (cy - py) >= 0 && (ax - px) * (by - py) - (bx - px) * (ay - py) >= 0 && (bx - px) * (cy - py) - (cx - px) * (by - py) >= 0;
+	} // check if a diagonal between two polygon nodes is valid (lies in polygon interior)
+
+
+	function isValidDiagonal(a, b) {
+		return a.next.i !== b.i && a.prev.i !== b.i && !intersectsPolygon(a, b) && ( // dones't intersect other edges
+		locallyInside(a, b) && locallyInside(b, a) && middleInside(a, b) && ( // locally visible
+		area(a.prev, a, b.prev) || area(a, b.prev, b)) || // does not create opposite-facing sectors
+		equals(a, b) && area(a.prev, a, a.next) > 0 && area(b.prev, b, b.next) > 0); // special zero-length case
+	} // signed area of a triangle
+
+
+	function area(p, q, r) {
+		return (q.y - p.y) * (r.x - q.x) - (q.x - p.x) * (r.y - q.y);
+	} // check if two points are equal
+
+
+	function equals(p1, p2) {
+		return p1.x === p2.x && p1.y === p2.y;
+	} // check if two segments intersect
+
+
+	function intersects(p1, q1, p2, q2) {
+		var o1 = sign(area(p1, q1, p2));
+		var o2 = sign(area(p1, q1, q2));
+		var o3 = sign(area(p2, q2, p1));
+		var o4 = sign(area(p2, q2, q1));
+		if (o1 !== o2 && o3 !== o4) return true; // general case
+
+		if (o1 === 0 && onSegment(p1, p2, q1)) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1
+
+		if (o2 === 0 && onSegment(p1, q2, q1)) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1
+
+		if (o3 === 0 && onSegment(p2, p1, q2)) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2
+
+		if (o4 === 0 && onSegment(p2, q1, q2)) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2
+
+		return false;
+	} // for collinear points p, q, r, check if point q lies on segment pr
+
+
+	function onSegment(p, q, r) {
+		return q.x <= Math.max(p.x, r.x) && q.x >= Math.min(p.x, r.x) && q.y <= Math.max(p.y, r.y) && q.y >= Math.min(p.y, r.y);
+	}
+
+	function sign(num) {
+		return num > 0 ? 1 : num < 0 ? -1 : 0;
+	} // check if a polygon diagonal intersects any polygon segments
+
+
+	function intersectsPolygon(a, b) {
+		var p = a;
+
+		do {
+			if (p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i && intersects(p, p.next, a, b)) return true;
+			p = p.next;
+		} while (p !== a);
+
+		return false;
+	} // check if a polygon diagonal is locally inside the polygon
+
+
+	function locallyInside(a, b) {
+		return area(a.prev, a, a.next) < 0 ? area(a, b, a.next) >= 0 && area(a, a.prev, b) >= 0 : area(a, b, a.prev) < 0 || area(a, a.next, b) < 0;
+	} // check if the middle point of a polygon diagonal is inside the polygon
+
+
+	function middleInside(a, b) {
+		var p = a,
+				inside = false;
+		var px = (a.x + b.x) / 2,
+				py = (a.y + b.y) / 2;
+
+		do {
+			if (p.y > py !== p.next.y > py && p.next.y !== p.y && px < (p.next.x - p.x) * (py - p.y) / (p.next.y - p.y) + p.x) inside = !inside;
+			p = p.next;
+		} while (p !== a);
+
+		return inside;
+	} // link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
+	// if one belongs to the outer ring and another to a hole, it merges it into a single ring
+
+
+	function splitPolygon(a, b) {
+		var a2 = new Node(a.i, a.x, a.y),
+				b2 = new Node(b.i, b.x, b.y),
+				an = a.next,
+				bp = b.prev;
+		a.next = b;
+		b.prev = a;
+		a2.next = an;
+		an.prev = a2;
+		b2.next = a2;
+		a2.prev = b2;
+		bp.next = b2;
+		b2.prev = bp;
+		return b2;
+	} // create a node and optionally link it with previous one (in a circular doubly linked list)
+
+
+	function insertNode(i, x, y, last) {
+		var p = new Node(i, x, y);
+
+		if (!last) {
+			p.prev = p;
+			p.next = p;
+		} else {
+			p.next = last.next;
+			p.prev = last;
+			last.next.prev = p;
+			last.next = p;
+		}
+
+		return p;
+	}
+
+	function removeNode(p) {
+		p.next.prev = p.prev;
+		p.prev.next = p.next;
+		if (p.prevZ) p.prevZ.nextZ = p.nextZ;
+		if (p.nextZ) p.nextZ.prevZ = p.prevZ;
+	}
+
+	function Node(i, x, y) {
+		// vertex index in coordinates array
+		this.i = i; // vertex coordinates
+
+		this.x = x;
+		this.y = y; // previous and next vertex nodes in a polygon ring
+
+		this.prev = null;
+		this.next = null; // z-order curve value
+
+		this.z = null; // previous and next nodes in z-order
+
+		this.prevZ = null;
+		this.nextZ = null; // indicates whether this is a steiner point
+
+		this.steiner = false;
+	}
+
+	function signedArea(data, start, end, dim) {
+		var sum = 0;
+
+		for (var i = start, j = end - dim; i < end; i += dim) {
+			sum += (data[j] - data[i]) * (data[i + 1] + data[j + 1]);
+			j = i;
+		}
+
+		return sum;
+	}
+
+	var ShapeUtils = {
+		// calculate area of the contour polygon
+		area: function area(contour) {
+			var n = contour.length;
+			var a = 0.0;
+
+			for (var p = n - 1, q = 0; q < n; p = q++) {
+				a += contour[p].x * contour[q].y - contour[q].x * contour[p].y;
+			}
+
+			return a * 0.5;
+		},
+		isClockWise: function isClockWise(pts) {
+			return ShapeUtils.area(pts) < 0;
+		},
+		triangulateShape: function triangulateShape(contour, holes) {
+			var vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]
+
+			var holeIndices = []; // array of hole indices
+
+			var faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]
+
+			removeDupEndPts(contour);
+			addContour(vertices, contour); //
+
+			var holeIndex = contour.length;
+			holes.forEach(removeDupEndPts);
+
+			for (var i = 0; i < holes.length; i++) {
+				holeIndices.push(holeIndex);
+				holeIndex += holes[i].length;
+				addContour(vertices, holes[i]);
+			} //
+
+
+			var triangles = Earcut.triangulate(vertices, holeIndices); //
+
+			for (var _i = 0; _i < triangles.length; _i += 3) {
+				faces.push(triangles.slice(_i, _i + 3));
+			}
+
+			return faces;
+		}
+	};
+
+	function removeDupEndPts(points) {
+		var l = points.length;
+
+		if (l > 2 && points[l - 1].equals(points[0])) {
+			points.pop();
+		}
+	}
+
+	function addContour(vertices, contour) {
+		for (var i = 0; i < contour.length; i++) {
+			vertices.push(contour[i].x);
+			vertices.push(contour[i].y);
+		}
+	}
+
+	var ExtrudeGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(ExtrudeGeometry, _BufferGeometry);
+
+		function ExtrudeGeometry(shapes, options) {
+			var _this;
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'ExtrudeGeometry';
+			_this.parameters = {
+				shapes: shapes,
+				options: options
+			};
+			shapes = Array.isArray(shapes) ? shapes : [shapes];
+
+			var scope = _assertThisInitialized(_this);
+
+			var verticesArray = [];
+			var uvArray = [];
+
+			for (var i = 0, l = shapes.length; i < l; i++) {
+				var shape = shapes[i];
+				addShape(shape);
+			} // build geometry
+
+
+			_this.setAttribute('position', new Float32BufferAttribute(verticesArray, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvArray, 2));
+
+			_this.computeVertexNormals(); // functions
+
+
+			function addShape(shape) {
+				var placeholder = []; // options
+
+				var curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
+				var steps = options.steps !== undefined ? options.steps : 1;
+				var depth = options.depth !== undefined ? options.depth : 100;
+				var bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
+				var bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 6;
+				var bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 2;
+				var bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
+				var bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;
+				var extrudePath = options.extrudePath;
+				var uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator; // deprecated options
+
+				if (options.amount !== undefined) {
+					console.warn('THREE.ExtrudeBufferGeometry: amount has been renamed to depth.');
+					depth = options.amount;
+				} //
+
+
+				var extrudePts,
+						extrudeByPath = false;
+				var splineTube, binormal, normal, position2;
+
+				if (extrudePath) {
+					extrudePts = extrudePath.getSpacedPoints(steps);
+					extrudeByPath = true;
+					bevelEnabled = false; // bevels not supported for path extrusion
+					// SETUP TNB variables
+					// TODO1 - have a .isClosed in spline?
+
+					splineTube = extrudePath.computeFrenetFrames(steps, false); // console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);
+
+					binormal = new Vector3();
+					normal = new Vector3();
+					position2 = new Vector3();
+				} // Safeguards if bevels are not enabled
+
+
+				if (!bevelEnabled) {
+					bevelSegments = 0;
+					bevelThickness = 0;
+					bevelSize = 0;
+					bevelOffset = 0;
+				} // Variables initialization
+
+
+				var shapePoints = shape.extractPoints(curveSegments);
+				var vertices = shapePoints.shape;
+				var holes = shapePoints.holes;
+				var reverse = !ShapeUtils.isClockWise(vertices);
+
+				if (reverse) {
+					vertices = vertices.reverse(); // Maybe we should also check if holes are in the opposite direction, just to be safe ...
+
+					for (var h = 0, hl = holes.length; h < hl; h++) {
+						var ahole = holes[h];
+
+						if (ShapeUtils.isClockWise(ahole)) {
+							holes[h] = ahole.reverse();
+						}
+					}
+				}
+
+				var faces = ShapeUtils.triangulateShape(vertices, holes);
+				/* Vertices */
+
+				var contour = vertices; // vertices has all points but contour has only points of circumference
+
+				for (var _h = 0, _hl = holes.length; _h < _hl; _h++) {
+					var _ahole = holes[_h];
+					vertices = vertices.concat(_ahole);
+				}
+
+				function scalePt2(pt, vec, size) {
+					if (!vec) console.error('THREE.ExtrudeGeometry: vec does not exist');
+					return vec.clone().multiplyScalar(size).add(pt);
+				}
+
+				var vlen = vertices.length,
+						flen = faces.length; // Find directions for point movement
+
+				function getBevelVec(inPt, inPrev, inNext) {
+					// computes for inPt the corresponding point inPt' on a new contour
+					//	 shifted by 1 unit (length of normalized vector) to the left
+					// if we walk along contour clockwise, this new contour is outside the old one
+					//
+					// inPt' is the intersection of the two lines parallel to the two
+					//	adjacent edges of inPt at a distance of 1 unit on the left side.
+					var v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt
+					// good reading for geometry algorithms (here: line-line intersection)
+					// http://geomalgorithms.com/a05-_intersect-1.html
+
+					var v_prev_x = inPt.x - inPrev.x,
+							v_prev_y = inPt.y - inPrev.y;
+					var v_next_x = inNext.x - inPt.x,
+							v_next_y = inNext.y - inPt.y;
+					var v_prev_lensq = v_prev_x * v_prev_x + v_prev_y * v_prev_y; // check for collinear edges
+
+					var collinear0 = v_prev_x * v_next_y - v_prev_y * v_next_x;
+
+					if (Math.abs(collinear0) > Number.EPSILON) {
+						// not collinear
+						// length of vectors for normalizing
+						var v_prev_len = Math.sqrt(v_prev_lensq);
+						var v_next_len = Math.sqrt(v_next_x * v_next_x + v_next_y * v_next_y); // shift adjacent points by unit vectors to the left
+
+						var ptPrevShift_x = inPrev.x - v_prev_y / v_prev_len;
+						var ptPrevShift_y = inPrev.y + v_prev_x / v_prev_len;
+						var ptNextShift_x = inNext.x - v_next_y / v_next_len;
+						var ptNextShift_y = inNext.y + v_next_x / v_next_len; // scaling factor for v_prev to intersection point
+
+						var sf = ((ptNextShift_x - ptPrevShift_x) * v_next_y - (ptNextShift_y - ptPrevShift_y) * v_next_x) / (v_prev_x * v_next_y - v_prev_y * v_next_x); // vector from inPt to intersection point
+
+						v_trans_x = ptPrevShift_x + v_prev_x * sf - inPt.x;
+						v_trans_y = ptPrevShift_y + v_prev_y * sf - inPt.y; // Don't normalize!, otherwise sharp corners become ugly
+						//	but prevent crazy spikes
+
+						var v_trans_lensq = v_trans_x * v_trans_x + v_trans_y * v_trans_y;
+
+						if (v_trans_lensq <= 2) {
+							return new Vector2(v_trans_x, v_trans_y);
+						} else {
+							shrink_by = Math.sqrt(v_trans_lensq / 2);
+						}
+					} else {
+						// handle special case of collinear edges
+						var direction_eq = false; // assumes: opposite
+
+						if (v_prev_x > Number.EPSILON) {
+							if (v_next_x > Number.EPSILON) {
+								direction_eq = true;
+							}
+						} else {
+							if (v_prev_x < -Number.EPSILON) {
+								if (v_next_x < -Number.EPSILON) {
+									direction_eq = true;
+								}
+							} else {
+								if (Math.sign(v_prev_y) === Math.sign(v_next_y)) {
+									direction_eq = true;
+								}
+							}
+						}
+
+						if (direction_eq) {
+							// console.log("Warning: lines are a straight sequence");
+							v_trans_x = -v_prev_y;
+							v_trans_y = v_prev_x;
+							shrink_by = Math.sqrt(v_prev_lensq);
+						} else {
+							// console.log("Warning: lines are a straight spike");
+							v_trans_x = v_prev_x;
+							v_trans_y = v_prev_y;
+							shrink_by = Math.sqrt(v_prev_lensq / 2);
+						}
+					}
+
+					return new Vector2(v_trans_x / shrink_by, v_trans_y / shrink_by);
+				}
+
+				var contourMovements = [];
+
+				for (var _i = 0, il = contour.length, j = il - 1, k = _i + 1; _i < il; _i++, j++, k++) {
+					if (j === il) j = 0;
+					if (k === il) k = 0; //	(j)---(i)---(k)
+					// console.log('i,j,k', i, j , k)
+
+					contourMovements[_i] = getBevelVec(contour[_i], contour[j], contour[k]);
+				}
+
+				var holesMovements = [];
+				var oneHoleMovements,
+						verticesMovements = contourMovements.concat();
+
+				for (var _h2 = 0, _hl2 = holes.length; _h2 < _hl2; _h2++) {
+					var _ahole2 = holes[_h2];
+					oneHoleMovements = [];
+
+					for (var _i2 = 0, _il = _ahole2.length, _j = _il - 1, _k = _i2 + 1; _i2 < _il; _i2++, _j++, _k++) {
+						if (_j === _il) _j = 0;
+						if (_k === _il) _k = 0; //	(j)---(i)---(k)
+
+						oneHoleMovements[_i2] = getBevelVec(_ahole2[_i2], _ahole2[_j], _ahole2[_k]);
+					}
+
+					holesMovements.push(oneHoleMovements);
+					verticesMovements = verticesMovements.concat(oneHoleMovements);
+				} // Loop bevelSegments, 1 for the front, 1 for the back
+
+
+				for (var b = 0; b < bevelSegments; b++) {
+					//for ( b = bevelSegments; b > 0; b -- ) {
+					var t = b / bevelSegments;
+					var z = bevelThickness * Math.cos(t * Math.PI / 2);
+
+					var _bs = bevelSize * Math.sin(t * Math.PI / 2) + bevelOffset; // contract shape
+
+
+					for (var _i3 = 0, _il2 = contour.length; _i3 < _il2; _i3++) {
+						var vert = scalePt2(contour[_i3], contourMovements[_i3], _bs);
+						v(vert.x, vert.y, -z);
+					} // expand holes
+
+
+					for (var _h3 = 0, _hl3 = holes.length; _h3 < _hl3; _h3++) {
+						var _ahole3 = holes[_h3];
+						oneHoleMovements = holesMovements[_h3];
+
+						for (var _i4 = 0, _il3 = _ahole3.length; _i4 < _il3; _i4++) {
+							var _vert = scalePt2(_ahole3[_i4], oneHoleMovements[_i4], _bs);
+
+							v(_vert.x, _vert.y, -z);
+						}
+					}
+				}
+
+				var bs = bevelSize + bevelOffset; // Back facing vertices
+
+				for (var _i5 = 0; _i5 < vlen; _i5++) {
+					var _vert2 = bevelEnabled ? scalePt2(vertices[_i5], verticesMovements[_i5], bs) : vertices[_i5];
+
+					if (!extrudeByPath) {
+						v(_vert2.x, _vert2.y, 0);
+					} else {
+						// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );
+						normal.copy(splineTube.normals[0]).multiplyScalar(_vert2.x);
+						binormal.copy(splineTube.binormals[0]).multiplyScalar(_vert2.y);
+						position2.copy(extrudePts[0]).add(normal).add(binormal);
+						v(position2.x, position2.y, position2.z);
+					}
+				} // Add stepped vertices...
+				// Including front facing vertices
+
+
+				for (var s = 1; s <= steps; s++) {
+					for (var _i6 = 0; _i6 < vlen; _i6++) {
+						var _vert3 = bevelEnabled ? scalePt2(vertices[_i6], verticesMovements[_i6], bs) : vertices[_i6];
+
+						if (!extrudeByPath) {
+							v(_vert3.x, _vert3.y, depth / steps * s);
+						} else {
+							// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );
+							normal.copy(splineTube.normals[s]).multiplyScalar(_vert3.x);
+							binormal.copy(splineTube.binormals[s]).multiplyScalar(_vert3.y);
+							position2.copy(extrudePts[s]).add(normal).add(binormal);
+							v(position2.x, position2.y, position2.z);
+						}
+					}
+				} // Add bevel segments planes
+				//for ( b = 1; b <= bevelSegments; b ++ ) {
+
+
+				for (var _b = bevelSegments - 1; _b >= 0; _b--) {
+					var _t = _b / bevelSegments;
+
+					var _z = bevelThickness * Math.cos(_t * Math.PI / 2);
+
+					var _bs2 = bevelSize * Math.sin(_t * Math.PI / 2) + bevelOffset; // contract shape
+
+
+					for (var _i7 = 0, _il4 = contour.length; _i7 < _il4; _i7++) {
+						var _vert4 = scalePt2(contour[_i7], contourMovements[_i7], _bs2);
+
+						v(_vert4.x, _vert4.y, depth + _z);
+					} // expand holes
+
+
+					for (var _h4 = 0, _hl4 = holes.length; _h4 < _hl4; _h4++) {
+						var _ahole4 = holes[_h4];
+						oneHoleMovements = holesMovements[_h4];
+
+						for (var _i8 = 0, _il5 = _ahole4.length; _i8 < _il5; _i8++) {
+							var _vert5 = scalePt2(_ahole4[_i8], oneHoleMovements[_i8], _bs2);
+
+							if (!extrudeByPath) {
+								v(_vert5.x, _vert5.y, depth + _z);
+							} else {
+								v(_vert5.x, _vert5.y + extrudePts[steps - 1].y, extrudePts[steps - 1].x + _z);
+							}
+						}
+					}
+				}
+				/* Faces */
+				// Top and bottom faces
+
+
+				buildLidFaces(); // Sides faces
+
+				buildSideFaces(); /////	Internal functions
+
+				function buildLidFaces() {
+					var start = verticesArray.length / 3;
+
+					if (bevelEnabled) {
+						var layer = 0; // steps + 1
+
+						var offset = vlen * layer; // Bottom faces
+
+						for (var _i9 = 0; _i9 < flen; _i9++) {
+							var face = faces[_i9];
+							f3(face[2] + offset, face[1] + offset, face[0] + offset);
+						}
+
+						layer = steps + bevelSegments * 2;
+						offset = vlen * layer; // Top faces
+
+						for (var _i10 = 0; _i10 < flen; _i10++) {
+							var _face = faces[_i10];
+							f3(_face[0] + offset, _face[1] + offset, _face[2] + offset);
+						}
+					} else {
+						// Bottom faces
+						for (var _i11 = 0; _i11 < flen; _i11++) {
+							var _face2 = faces[_i11];
+							f3(_face2[2], _face2[1], _face2[0]);
+						} // Top faces
+
+
+						for (var _i12 = 0; _i12 < flen; _i12++) {
+							var _face3 = faces[_i12];
+							f3(_face3[0] + vlen * steps, _face3[1] + vlen * steps, _face3[2] + vlen * steps);
+						}
+					}
+
+					scope.addGroup(start, verticesArray.length / 3 - start, 0);
+				} // Create faces for the z-sides of the shape
+
+
+				function buildSideFaces() {
+					var start = verticesArray.length / 3;
+					var layeroffset = 0;
+					sidewalls(contour, layeroffset);
+					layeroffset += contour.length;
+
+					for (var _h5 = 0, _hl5 = holes.length; _h5 < _hl5; _h5++) {
+						var _ahole5 = holes[_h5];
+						sidewalls(_ahole5, layeroffset); //, true
+
+						layeroffset += _ahole5.length;
+					}
+
+					scope.addGroup(start, verticesArray.length / 3 - start, 1);
+				}
+
+				function sidewalls(contour, layeroffset) {
+					var i = contour.length;
+
+					while (--i >= 0) {
+						var _j2 = i;
+
+						var _k2 = i - 1;
+
+						if (_k2 < 0) _k2 = contour.length - 1; //console.log('b', i,j, i-1, k,vertices.length);
+
+						for (var _s = 0, sl = steps + bevelSegments * 2; _s < sl; _s++) {
+							var slen1 = vlen * _s;
+							var slen2 = vlen * (_s + 1);
+
+							var a = layeroffset + _j2 + slen1,
+									_b2 = layeroffset + _k2 + slen1,
+									c = layeroffset + _k2 + slen2,
+									d = layeroffset + _j2 + slen2;
+
+							f4(a, _b2, c, d);
+						}
+					}
+				}
+
+				function v(x, y, z) {
+					placeholder.push(x);
+					placeholder.push(y);
+					placeholder.push(z);
+				}
+
+				function f3(a, b, c) {
+					addVertex(a);
+					addVertex(b);
+					addVertex(c);
+					var nextIndex = verticesArray.length / 3;
+					var uvs = uvgen.generateTopUV(scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1);
+					addUV(uvs[0]);
+					addUV(uvs[1]);
+					addUV(uvs[2]);
+				}
+
+				function f4(a, b, c, d) {
+					addVertex(a);
+					addVertex(b);
+					addVertex(d);
+					addVertex(b);
+					addVertex(c);
+					addVertex(d);
+					var nextIndex = verticesArray.length / 3;
+					var uvs = uvgen.generateSideWallUV(scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1);
+					addUV(uvs[0]);
+					addUV(uvs[1]);
+					addUV(uvs[3]);
+					addUV(uvs[1]);
+					addUV(uvs[2]);
+					addUV(uvs[3]);
+				}
+
+				function addVertex(index) {
+					verticesArray.push(placeholder[index * 3 + 0]);
+					verticesArray.push(placeholder[index * 3 + 1]);
+					verticesArray.push(placeholder[index * 3 + 2]);
+				}
+
+				function addUV(vector2) {
+					uvArray.push(vector2.x);
+					uvArray.push(vector2.y);
+				}
+			}
+
+			return _this;
+		}
+
+		var _proto = ExtrudeGeometry.prototype;
+
+		_proto.toJSON = function toJSON() {
+			var data = BufferGeometry.prototype.toJSON.call(this);
+			var shapes = this.parameters.shapes;
+			var options = this.parameters.options;
+			return _toJSON(shapes, options, data);
+		};
+
+		return ExtrudeGeometry;
+	}(BufferGeometry);
+
+	var WorldUVGenerator = {
+		generateTopUV: function generateTopUV(geometry, vertices, indexA, indexB, indexC) {
+			var a_x = vertices[indexA * 3];
+			var a_y = vertices[indexA * 3 + 1];
+			var b_x = vertices[indexB * 3];
+			var b_y = vertices[indexB * 3 + 1];
+			var c_x = vertices[indexC * 3];
+			var c_y = vertices[indexC * 3 + 1];
+			return [new Vector2(a_x, a_y), new Vector2(b_x, b_y), new Vector2(c_x, c_y)];
+		},
+		generateSideWallUV: function generateSideWallUV(geometry, vertices, indexA, indexB, indexC, indexD) {
+			var a_x = vertices[indexA * 3];
+			var a_y = vertices[indexA * 3 + 1];
+			var a_z = vertices[indexA * 3 + 2];
+			var b_x = vertices[indexB * 3];
+			var b_y = vertices[indexB * 3 + 1];
+			var b_z = vertices[indexB * 3 + 2];
+			var c_x = vertices[indexC * 3];
+			var c_y = vertices[indexC * 3 + 1];
+			var c_z = vertices[indexC * 3 + 2];
+			var d_x = vertices[indexD * 3];
+			var d_y = vertices[indexD * 3 + 1];
+			var d_z = vertices[indexD * 3 + 2];
+
+			if (Math.abs(a_y - b_y) < 0.01) {
+				return [new Vector2(a_x, 1 - a_z), new Vector2(b_x, 1 - b_z), new Vector2(c_x, 1 - c_z), new Vector2(d_x, 1 - d_z)];
+			} else {
+				return [new Vector2(a_y, 1 - a_z), new Vector2(b_y, 1 - b_z), new Vector2(c_y, 1 - c_z), new Vector2(d_y, 1 - d_z)];
+			}
+		}
+	};
+
+	function _toJSON(shapes, options, data) {
+		data.shapes = [];
+
+		if (Array.isArray(shapes)) {
+			for (var i = 0, l = shapes.length; i < l; i++) {
+				var shape = shapes[i];
+				data.shapes.push(shape.uuid);
+			}
+		} else {
+			data.shapes.push(shapes.uuid);
+		}
+
+		if (options.extrudePath !== undefined) data.options.extrudePath = options.extrudePath.toJSON();
+		return data;
+	}
+
+	var IcosahedronGeometry = /*#__PURE__*/function (_PolyhedronGeometry) {
+		_inheritsLoose(IcosahedronGeometry, _PolyhedronGeometry);
+
+		function IcosahedronGeometry(radius, detail) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (detail === void 0) {
+				detail = 0;
+			}
+
+			var t = (1 + Math.sqrt(5)) / 2;
+			var vertices = [-1, t, 0, 1, t, 0, -1, -t, 0, 1, -t, 0, 0, -1, t, 0, 1, t, 0, -1, -t, 0, 1, -t, t, 0, -1, t, 0, 1, -t, 0, -1, -t, 0, 1];
+			var indices = [0, 11, 5, 0, 5, 1, 0, 1, 7, 0, 7, 10, 0, 10, 11, 1, 5, 9, 5, 11, 4, 11, 10, 2, 10, 7, 6, 7, 1, 8, 3, 9, 4, 3, 4, 2, 3, 2, 6, 3, 6, 8, 3, 8, 9, 4, 9, 5, 2, 4, 11, 6, 2, 10, 8, 6, 7, 9, 8, 1];
+			_this = _PolyhedronGeometry.call(this, vertices, indices, radius, detail) || this;
+			_this.type = 'IcosahedronGeometry';
+			_this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+			return _this;
+		}
+
+		return IcosahedronGeometry;
+	}(PolyhedronGeometry);
+
+	var LatheGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(LatheGeometry, _BufferGeometry);
+
+		function LatheGeometry(points, segments, phiStart, phiLength) {
+			var _this;
+
+			if (segments === void 0) {
+				segments = 12;
+			}
+
+			if (phiStart === void 0) {
+				phiStart = 0;
+			}
+
+			if (phiLength === void 0) {
+				phiLength = Math.PI * 2;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'LatheGeometry';
+			_this.parameters = {
+				points: points,
+				segments: segments,
+				phiStart: phiStart,
+				phiLength: phiLength
+			};
+			segments = Math.floor(segments); // clamp phiLength so it's in range of [ 0, 2PI ]
+
+			phiLength = MathUtils.clamp(phiLength, 0, Math.PI * 2); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var uvs = []; // helper variables
+
+			var inverseSegments = 1.0 / segments;
+			var vertex = new Vector3();
+			var uv = new Vector2(); // generate vertices and uvs
+
+			for (var i = 0; i <= segments; i++) {
+				var phi = phiStart + i * inverseSegments * phiLength;
+				var sin = Math.sin(phi);
+				var cos = Math.cos(phi);
+
+				for (var j = 0; j <= points.length - 1; j++) {
+					// vertex
+					vertex.x = points[j].x * sin;
+					vertex.y = points[j].y;
+					vertex.z = points[j].x * cos;
+					vertices.push(vertex.x, vertex.y, vertex.z); // uv
+
+					uv.x = i / segments;
+					uv.y = j / (points.length - 1);
+					uvs.push(uv.x, uv.y);
+				}
+			} // indices
+
+
+			for (var _i = 0; _i < segments; _i++) {
+				for (var _j = 0; _j < points.length - 1; _j++) {
+					var base = _j + _i * points.length;
+					var a = base;
+					var b = base + points.length;
+					var c = base + points.length + 1;
+					var d = base + 1; // faces
+
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // generate normals
+
+
+			_this.computeVertexNormals(); // if the geometry is closed, we need to average the normals along the seam.
+			// because the corresponding vertices are identical (but still have different UVs).
+
+
+			if (phiLength === Math.PI * 2) {
+				var normals = _this.attributes.normal.array;
+				var n1 = new Vector3();
+				var n2 = new Vector3();
+				var n = new Vector3(); // this is the buffer offset for the last line of vertices
+
+				var _base = segments * points.length * 3;
+
+				for (var _i2 = 0, _j2 = 0; _i2 < points.length; _i2++, _j2 += 3) {
+					// select the normal of the vertex in the first line
+					n1.x = normals[_j2 + 0];
+					n1.y = normals[_j2 + 1];
+					n1.z = normals[_j2 + 2]; // select the normal of the vertex in the last line
+
+					n2.x = normals[_base + _j2 + 0];
+					n2.y = normals[_base + _j2 + 1];
+					n2.z = normals[_base + _j2 + 2]; // average normals
+
+					n.addVectors(n1, n2).normalize(); // assign the new values to both normals
+
+					normals[_j2 + 0] = normals[_base + _j2 + 0] = n.x;
+					normals[_j2 + 1] = normals[_base + _j2 + 1] = n.y;
+					normals[_j2 + 2] = normals[_base + _j2 + 2] = n.z;
+				}
+			}
+
+			return _this;
+		}
+
+		return LatheGeometry;
+	}(BufferGeometry);
+
+	var OctahedronGeometry = /*#__PURE__*/function (_PolyhedronGeometry) {
+		_inheritsLoose(OctahedronGeometry, _PolyhedronGeometry);
+
+		function OctahedronGeometry(radius, detail) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (detail === void 0) {
+				detail = 0;
+			}
+
+			var vertices = [1, 0, 0, -1, 0, 0, 0, 1, 0, 0, -1, 0, 0, 0, 1, 0, 0, -1];
+			var indices = [0, 2, 4, 0, 4, 3, 0, 3, 5, 0, 5, 2, 1, 2, 5, 1, 5, 3, 1, 3, 4, 1, 4, 2];
+			_this = _PolyhedronGeometry.call(this, vertices, indices, radius, detail) || this;
+			_this.type = 'OctahedronGeometry';
+			_this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+			return _this;
+		}
+
+		return OctahedronGeometry;
+	}(PolyhedronGeometry);
+
+	/**
+	 * Parametric Surfaces Geometry
+	 * based on the brilliant article by @prideout https://prideout.net/blog/old/blog/index.html@p=44.html
+	 */
+
+	function ParametricGeometry(func, slices, stacks) {
+		BufferGeometry.call(this);
+		this.type = 'ParametricGeometry';
+		this.parameters = {
+			func: func,
+			slices: slices,
+			stacks: stacks
+		}; // buffers
+
+		var indices = [];
+		var vertices = [];
+		var normals = [];
+		var uvs = [];
+		var EPS = 0.00001;
+		var normal = new Vector3();
+		var p0 = new Vector3(),
+				p1 = new Vector3();
+		var pu = new Vector3(),
+				pv = new Vector3();
+
+		if (func.length < 3) {
+			console.error('THREE.ParametricGeometry: Function must now modify a Vector3 as third parameter.');
+		} // generate vertices, normals and uvs
+
+
+		var sliceCount = slices + 1;
+
+		for (var i = 0; i <= stacks; i++) {
+			var v = i / stacks;
+
+			for (var j = 0; j <= slices; j++) {
+				var u = j / slices; // vertex
+
+				func(u, v, p0);
+				vertices.push(p0.x, p0.y, p0.z); // normal
+				// approximate tangent vectors via finite differences
+
+				if (u - EPS >= 0) {
+					func(u - EPS, v, p1);
+					pu.subVectors(p0, p1);
+				} else {
+					func(u + EPS, v, p1);
+					pu.subVectors(p1, p0);
+				}
+
+				if (v - EPS >= 0) {
+					func(u, v - EPS, p1);
+					pv.subVectors(p0, p1);
+				} else {
+					func(u, v + EPS, p1);
+					pv.subVectors(p1, p0);
+				} // cross product of tangent vectors returns surface normal
+
+
+				normal.crossVectors(pu, pv).normalize();
+				normals.push(normal.x, normal.y, normal.z); // uv
+
+				uvs.push(u, v);
+			}
+		} // generate indices
+
+
+		for (var _i = 0; _i < stacks; _i++) {
+			for (var _j = 0; _j < slices; _j++) {
+				var a = _i * sliceCount + _j;
+				var b = _i * sliceCount + _j + 1;
+				var c = (_i + 1) * sliceCount + _j + 1;
+				var d = (_i + 1) * sliceCount + _j; // faces one and two
+
+				indices.push(a, b, d);
+				indices.push(b, c, d);
+			}
+		} // build geometry
+
+
+		this.setIndex(indices);
+		this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+		this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+		this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+	}
+
+	ParametricGeometry.prototype = Object.create(BufferGeometry.prototype);
+	ParametricGeometry.prototype.constructor = ParametricGeometry;
+
+	var RingGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(RingGeometry, _BufferGeometry);
+
+		function RingGeometry(innerRadius, outerRadius, thetaSegments, phiSegments, thetaStart, thetaLength) {
+			var _this;
+
+			if (innerRadius === void 0) {
+				innerRadius = 0.5;
+			}
+
+			if (outerRadius === void 0) {
+				outerRadius = 1;
+			}
+
+			if (thetaSegments === void 0) {
+				thetaSegments = 8;
+			}
+
+			if (phiSegments === void 0) {
+				phiSegments = 1;
+			}
+
+			if (thetaStart === void 0) {
+				thetaStart = 0;
+			}
+
+			if (thetaLength === void 0) {
+				thetaLength = Math.PI * 2;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'RingGeometry';
+			_this.parameters = {
+				innerRadius: innerRadius,
+				outerRadius: outerRadius,
+				thetaSegments: thetaSegments,
+				phiSegments: phiSegments,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+			thetaSegments = Math.max(3, thetaSegments);
+			phiSegments = Math.max(1, phiSegments); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // some helper variables
+
+			var radius = innerRadius;
+			var radiusStep = (outerRadius - innerRadius) / phiSegments;
+			var vertex = new Vector3();
+			var uv = new Vector2(); // generate vertices, normals and uvs
+
+			for (var j = 0; j <= phiSegments; j++) {
+				for (var i = 0; i <= thetaSegments; i++) {
+					// values are generate from the inside of the ring to the outside
+					var segment = thetaStart + i / thetaSegments * thetaLength; // vertex
+
+					vertex.x = radius * Math.cos(segment);
+					vertex.y = radius * Math.sin(segment);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
+
+					normals.push(0, 0, 1); // uv
+
+					uv.x = (vertex.x / outerRadius + 1) / 2;
+					uv.y = (vertex.y / outerRadius + 1) / 2;
+					uvs.push(uv.x, uv.y);
+				} // increase the radius for next row of vertices
+
+
+				radius += radiusStep;
+			} // indices
+
+
+			for (var _j = 0; _j < phiSegments; _j++) {
+				var thetaSegmentLevel = _j * (thetaSegments + 1);
+
+				for (var _i = 0; _i < thetaSegments; _i++) {
+					var _segment = _i + thetaSegmentLevel;
+
+					var a = _segment;
+					var b = _segment + thetaSegments + 1;
+					var c = _segment + thetaSegments + 2;
+					var d = _segment + 1; // faces
+
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+
+			return _this;
+		}
+
+		return RingGeometry;
+	}(BufferGeometry);
+
+	var ShapeGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(ShapeGeometry, _BufferGeometry);
+
+		function ShapeGeometry(shapes, curveSegments) {
+			var _this;
+
+			if (curveSegments === void 0) {
+				curveSegments = 12;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'ShapeGeometry';
+			_this.parameters = {
+				shapes: shapes,
+				curveSegments: curveSegments
+			}; // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // helper variables
+
+			var groupStart = 0;
+			var groupCount = 0; // allow single and array values for "shapes" parameter
+
+			if (Array.isArray(shapes) === false) {
+				addShape(shapes);
+			} else {
+				for (var i = 0; i < shapes.length; i++) {
+					addShape(shapes[i]);
+
+					_this.addGroup(groupStart, groupCount, i); // enables MultiMaterial support
+
+
+					groupStart += groupCount;
+					groupCount = 0;
+				}
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // helper functions
+
+
+			function addShape(shape) {
+				var indexOffset = vertices.length / 3;
+				var points = shape.extractPoints(curveSegments);
+				var shapeVertices = points.shape;
+				var shapeHoles = points.holes; // check direction of vertices
+
+				if (ShapeUtils.isClockWise(shapeVertices) === false) {
+					shapeVertices = shapeVertices.reverse();
+				}
+
+				for (var _i = 0, l = shapeHoles.length; _i < l; _i++) {
+					var shapeHole = shapeHoles[_i];
+
+					if (ShapeUtils.isClockWise(shapeHole) === true) {
+						shapeHoles[_i] = shapeHole.reverse();
+					}
+				}
+
+				var faces = ShapeUtils.triangulateShape(shapeVertices, shapeHoles); // join vertices of inner and outer paths to a single array
+
+				for (var _i2 = 0, _l = shapeHoles.length; _i2 < _l; _i2++) {
+					var _shapeHole = shapeHoles[_i2];
+					shapeVertices = shapeVertices.concat(_shapeHole);
+				} // vertices, normals, uvs
+
+
+				for (var _i3 = 0, _l2 = shapeVertices.length; _i3 < _l2; _i3++) {
+					var vertex = shapeVertices[_i3];
+					vertices.push(vertex.x, vertex.y, 0);
+					normals.push(0, 0, 1);
+					uvs.push(vertex.x, vertex.y); // world uvs
+				} // incides
+
+
+				for (var _i4 = 0, _l3 = faces.length; _i4 < _l3; _i4++) {
+					var face = faces[_i4];
+					var a = face[0] + indexOffset;
+					var b = face[1] + indexOffset;
+					var c = face[2] + indexOffset;
+					indices.push(a, b, c);
+					groupCount += 3;
+				}
+			}
+
+			return _this;
+		}
+
+		var _proto = ShapeGeometry.prototype;
+
+		_proto.toJSON = function toJSON() {
+			var data = BufferGeometry.prototype.toJSON.call(this);
+			var shapes = this.parameters.shapes;
+			return _toJSON$1(shapes, data);
+		};
+
+		return ShapeGeometry;
+	}(BufferGeometry);
+
+	function _toJSON$1(shapes, data) {
+		data.shapes = [];
+
+		if (Array.isArray(shapes)) {
+			for (var i = 0, l = shapes.length; i < l; i++) {
+				var shape = shapes[i];
+				data.shapes.push(shape.uuid);
+			}
+		} else {
+			data.shapes.push(shapes.uuid);
+		}
+
+		return data;
+	}
+
+	var SphereGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(SphereGeometry, _BufferGeometry);
+
+		function SphereGeometry(radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (widthSegments === void 0) {
+				widthSegments = 8;
+			}
+
+			if (heightSegments === void 0) {
+				heightSegments = 6;
+			}
+
+			if (phiStart === void 0) {
+				phiStart = 0;
+			}
+
+			if (phiLength === void 0) {
+				phiLength = Math.PI * 2;
+			}
+
+			if (thetaStart === void 0) {
+				thetaStart = 0;
+			}
+
+			if (thetaLength === void 0) {
+				thetaLength = Math.PI;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'SphereGeometry';
+			_this.parameters = {
+				radius: radius,
+				widthSegments: widthSegments,
+				heightSegments: heightSegments,
+				phiStart: phiStart,
+				phiLength: phiLength,
+				thetaStart: thetaStart,
+				thetaLength: thetaLength
+			};
+			widthSegments = Math.max(3, Math.floor(widthSegments));
+			heightSegments = Math.max(2, Math.floor(heightSegments));
+			var thetaEnd = Math.min(thetaStart + thetaLength, Math.PI);
+			var index = 0;
+			var grid = [];
+			var vertex = new Vector3();
+			var normal = new Vector3(); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // generate vertices, normals and uvs
+
+			for (var iy = 0; iy <= heightSegments; iy++) {
+				var verticesRow = [];
+				var v = iy / heightSegments; // special case for the poles
+
+				var uOffset = 0;
+
+				if (iy == 0 && thetaStart == 0) {
+					uOffset = 0.5 / widthSegments;
+				} else if (iy == heightSegments && thetaEnd == Math.PI) {
+					uOffset = -0.5 / widthSegments;
+				}
+
+				for (var ix = 0; ix <= widthSegments; ix++) {
+					var u = ix / widthSegments; // vertex
+
+					vertex.x = -radius * Math.cos(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
+					vertex.y = radius * Math.cos(thetaStart + v * thetaLength);
+					vertex.z = radius * Math.sin(phiStart + u * phiLength) * Math.sin(thetaStart + v * thetaLength);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
+
+					normal.copy(vertex).normalize();
+					normals.push(normal.x, normal.y, normal.z); // uv
+
+					uvs.push(u + uOffset, 1 - v);
+					verticesRow.push(index++);
+				}
+
+				grid.push(verticesRow);
+			} // indices
+
+
+			for (var _iy = 0; _iy < heightSegments; _iy++) {
+				for (var _ix = 0; _ix < widthSegments; _ix++) {
+					var a = grid[_iy][_ix + 1];
+					var b = grid[_iy][_ix];
+					var c = grid[_iy + 1][_ix];
+					var d = grid[_iy + 1][_ix + 1];
+					if (_iy !== 0 || thetaStart > 0) indices.push(a, b, d);
+					if (_iy !== heightSegments - 1 || thetaEnd < Math.PI) indices.push(b, c, d);
+				}
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+
+			return _this;
+		}
+
+		return SphereGeometry;
+	}(BufferGeometry);
+
+	var TetrahedronGeometry = /*#__PURE__*/function (_PolyhedronGeometry) {
+		_inheritsLoose(TetrahedronGeometry, _PolyhedronGeometry);
+
+		function TetrahedronGeometry(radius, detail) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (detail === void 0) {
+				detail = 0;
+			}
+
+			var vertices = [1, 1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1];
+			var indices = [2, 1, 0, 0, 3, 2, 1, 3, 0, 2, 3, 1];
+			_this = _PolyhedronGeometry.call(this, vertices, indices, radius, detail) || this;
+			_this.type = 'TetrahedronGeometry';
+			_this.parameters = {
+				radius: radius,
+				detail: detail
+			};
+			return _this;
+		}
+
+		return TetrahedronGeometry;
+	}(PolyhedronGeometry);
+
+	var TextGeometry = /*#__PURE__*/function (_ExtrudeGeometry) {
+		_inheritsLoose(TextGeometry, _ExtrudeGeometry);
+
+		function TextGeometry(text, parameters) {
+			var _this;
+
+			if (parameters === void 0) {
+				parameters = {};
+			}
+
+			var font = parameters.font;
+
+			if (!(font && font.isFont)) {
+				console.error('THREE.TextGeometry: font parameter is not an instance of THREE.Font.');
+				return new BufferGeometry() || _assertThisInitialized(_this);
+			}
+
+			var shapes = font.generateShapes(text, parameters.size); // translate parameters to ExtrudeGeometry API
+
+			parameters.depth = parameters.height !== undefined ? parameters.height : 50; // defaults
+
+			if (parameters.bevelThickness === undefined) parameters.bevelThickness = 10;
+			if (parameters.bevelSize === undefined) parameters.bevelSize = 8;
+			if (parameters.bevelEnabled === undefined) parameters.bevelEnabled = false;
+			_this = _ExtrudeGeometry.call(this, shapes, parameters) || this;
+			_this.type = 'TextGeometry';
+			return _this;
+		}
+
+		return TextGeometry;
+	}(ExtrudeGeometry);
+
+	var TorusGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(TorusGeometry, _BufferGeometry);
+
+		function TorusGeometry(radius, tube, radialSegments, tubularSegments, arc) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (tube === void 0) {
+				tube = 0.4;
+			}
+
+			if (radialSegments === void 0) {
+				radialSegments = 8;
+			}
+
+			if (tubularSegments === void 0) {
+				tubularSegments = 6;
+			}
+
+			if (arc === void 0) {
+				arc = Math.PI * 2;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'TorusGeometry';
+			_this.parameters = {
+				radius: radius,
+				tube: tube,
+				radialSegments: radialSegments,
+				tubularSegments: tubularSegments,
+				arc: arc
+			};
+			radialSegments = Math.floor(radialSegments);
+			tubularSegments = Math.floor(tubularSegments); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // helper variables
+
+			var center = new Vector3();
+			var vertex = new Vector3();
+			var normal = new Vector3(); // generate vertices, normals and uvs
+
+			for (var j = 0; j <= radialSegments; j++) {
+				for (var i = 0; i <= tubularSegments; i++) {
+					var u = i / tubularSegments * arc;
+					var v = j / radialSegments * Math.PI * 2; // vertex
+
+					vertex.x = (radius + tube * Math.cos(v)) * Math.cos(u);
+					vertex.y = (radius + tube * Math.cos(v)) * Math.sin(u);
+					vertex.z = tube * Math.sin(v);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal
+
+					center.x = radius * Math.cos(u);
+					center.y = radius * Math.sin(u);
+					normal.subVectors(vertex, center).normalize();
+					normals.push(normal.x, normal.y, normal.z); // uv
+
+					uvs.push(i / tubularSegments);
+					uvs.push(j / radialSegments);
+				}
+			} // generate indices
+
+
+			for (var _j = 1; _j <= radialSegments; _j++) {
+				for (var _i = 1; _i <= tubularSegments; _i++) {
+					// indices
+					var a = (tubularSegments + 1) * _j + _i - 1;
+					var b = (tubularSegments + 1) * (_j - 1) + _i - 1;
+					var c = (tubularSegments + 1) * (_j - 1) + _i;
+					var d = (tubularSegments + 1) * _j + _i; // faces
+
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2));
+
+			return _this;
+		}
+
+		return TorusGeometry;
+	}(BufferGeometry);
+
+	var TorusKnotGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(TorusKnotGeometry, _BufferGeometry);
+
+		function TorusKnotGeometry(radius, tube, tubularSegments, radialSegments, p, q) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (tube === void 0) {
+				tube = 0.4;
+			}
+
+			if (tubularSegments === void 0) {
+				tubularSegments = 64;
+			}
+
+			if (radialSegments === void 0) {
+				radialSegments = 8;
+			}
+
+			if (p === void 0) {
+				p = 2;
+			}
+
+			if (q === void 0) {
+				q = 3;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'TorusKnotGeometry';
+			_this.parameters = {
+				radius: radius,
+				tube: tube,
+				tubularSegments: tubularSegments,
+				radialSegments: radialSegments,
+				p: p,
+				q: q
+			};
+			tubularSegments = Math.floor(tubularSegments);
+			radialSegments = Math.floor(radialSegments); // buffers
+
+			var indices = [];
+			var vertices = [];
+			var normals = [];
+			var uvs = []; // helper variables
+
+			var vertex = new Vector3();
+			var normal = new Vector3();
+			var P1 = new Vector3();
+			var P2 = new Vector3();
+			var B = new Vector3();
+			var T = new Vector3();
+			var N = new Vector3(); // generate vertices, normals and uvs
+
+			for (var i = 0; i <= tubularSegments; ++i) {
+				// the radian "u" is used to calculate the position on the torus curve of the current tubular segement
+				var u = i / tubularSegments * p * Math.PI * 2; // now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
+				// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions
+
+				calculatePositionOnCurve(u, p, q, radius, P1);
+				calculatePositionOnCurve(u + 0.01, p, q, radius, P2); // calculate orthonormal basis
+
+				T.subVectors(P2, P1);
+				N.addVectors(P2, P1);
+				B.crossVectors(T, N);
+				N.crossVectors(B, T); // normalize B, N. T can be ignored, we don't use it
+
+				B.normalize();
+				N.normalize();
+
+				for (var j = 0; j <= radialSegments; ++j) {
+					// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
+					// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.
+					var v = j / radialSegments * Math.PI * 2;
+					var cx = -tube * Math.cos(v);
+					var cy = tube * Math.sin(v); // now calculate the final vertex position.
+					// first we orient the extrusion with our basis vectos, then we add it to the current position on the curve
+
+					vertex.x = P1.x + (cx * N.x + cy * B.x);
+					vertex.y = P1.y + (cx * N.y + cy * B.y);
+					vertex.z = P1.z + (cx * N.z + cy * B.z);
+					vertices.push(vertex.x, vertex.y, vertex.z); // normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)
+
+					normal.subVectors(vertex, P1).normalize();
+					normals.push(normal.x, normal.y, normal.z); // uv
+
+					uvs.push(i / tubularSegments);
+					uvs.push(j / radialSegments);
+				}
+			} // generate indices
+
+
+			for (var _j = 1; _j <= tubularSegments; _j++) {
+				for (var _i = 1; _i <= radialSegments; _i++) {
+					// indices
+					var a = (radialSegments + 1) * (_j - 1) + (_i - 1);
+					var b = (radialSegments + 1) * _j + (_i - 1);
+					var c = (radialSegments + 1) * _j + _i;
+					var d = (radialSegments + 1) * (_j - 1) + _i; // faces
+
+					indices.push(a, b, d);
+					indices.push(b, c, d);
+				}
+			} // build geometry
+
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // this function calculates the current position on the torus curve
+
+
+			function calculatePositionOnCurve(u, p, q, radius, position) {
+				var cu = Math.cos(u);
+				var su = Math.sin(u);
+				var quOverP = q / p * u;
+				var cs = Math.cos(quOverP);
+				position.x = radius * (2 + cs) * 0.5 * cu;
+				position.y = radius * (2 + cs) * su * 0.5;
+				position.z = radius * Math.sin(quOverP) * 0.5;
+			}
+
+			return _this;
+		}
+
+		return TorusKnotGeometry;
+	}(BufferGeometry);
+
+	var TubeGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(TubeGeometry, _BufferGeometry);
+
+		function TubeGeometry(path, tubularSegments, radius, radialSegments, closed) {
+			var _this;
+
+			if (tubularSegments === void 0) {
+				tubularSegments = 64;
+			}
+
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (radialSegments === void 0) {
+				radialSegments = 8;
+			}
+
+			if (closed === void 0) {
+				closed = false;
+			}
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'TubeGeometry';
+			_this.parameters = {
+				path: path,
+				tubularSegments: tubularSegments,
+				radius: radius,
+				radialSegments: radialSegments,
+				closed: closed
+			};
+			var frames = path.computeFrenetFrames(tubularSegments, closed); // expose internals
+
+			_this.tangents = frames.tangents;
+			_this.normals = frames.normals;
+			_this.binormals = frames.binormals; // helper variables
+
+			var vertex = new Vector3();
+			var normal = new Vector3();
+			var uv = new Vector2();
+			var P = new Vector3(); // buffer
+
+			var vertices = [];
+			var normals = [];
+			var uvs = [];
+			var indices = []; // create buffer data
+
+			generateBufferData(); // build geometry
+
+			_this.setIndex(indices);
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			_this.setAttribute('normal', new Float32BufferAttribute(normals, 3));
+
+			_this.setAttribute('uv', new Float32BufferAttribute(uvs, 2)); // functions
+
+
+			function generateBufferData() {
+				for (var i = 0; i < tubularSegments; i++) {
+					generateSegment(i);
+				} // if the geometry is not closed, generate the last row of vertices and normals
+				// at the regular position on the given path
+				//
+				// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)
+
+
+				generateSegment(closed === false ? tubularSegments : 0); // uvs are generated in a separate function.
+				// this makes it easy compute correct values for closed geometries
+
+				generateUVs(); // finally create faces
+
+				generateIndices();
+			}
+
+			function generateSegment(i) {
+				// we use getPointAt to sample evenly distributed points from the given path
+				P = path.getPointAt(i / tubularSegments, P); // retrieve corresponding normal and binormal
+
+				var N = frames.normals[i];
+				var B = frames.binormals[i]; // generate normals and vertices for the current segment
+
+				for (var j = 0; j <= radialSegments; j++) {
+					var v = j / radialSegments * Math.PI * 2;
+					var sin = Math.sin(v);
+					var cos = -Math.cos(v); // normal
+
+					normal.x = cos * N.x + sin * B.x;
+					normal.y = cos * N.y + sin * B.y;
+					normal.z = cos * N.z + sin * B.z;
+					normal.normalize();
+					normals.push(normal.x, normal.y, normal.z); // vertex
+
+					vertex.x = P.x + radius * normal.x;
+					vertex.y = P.y + radius * normal.y;
+					vertex.z = P.z + radius * normal.z;
+					vertices.push(vertex.x, vertex.y, vertex.z);
+				}
+			}
+
+			function generateIndices() {
+				for (var j = 1; j <= tubularSegments; j++) {
+					for (var i = 1; i <= radialSegments; i++) {
+						var a = (radialSegments + 1) * (j - 1) + (i - 1);
+						var b = (radialSegments + 1) * j + (i - 1);
+						var c = (radialSegments + 1) * j + i;
+						var d = (radialSegments + 1) * (j - 1) + i; // faces
+
+						indices.push(a, b, d);
+						indices.push(b, c, d);
+					}
+				}
+			}
+
+			function generateUVs() {
+				for (var i = 0; i <= tubularSegments; i++) {
+					for (var j = 0; j <= radialSegments; j++) {
+						uv.x = i / tubularSegments;
+						uv.y = j / radialSegments;
+						uvs.push(uv.x, uv.y);
+					}
+				}
+			}
+
+			return _this;
+		}
+
+		var _proto = TubeGeometry.prototype;
+
+		_proto.toJSON = function toJSON() {
+			var data = BufferGeometry.prototype.toJSON.call(this);
+			data.path = this.parameters.path.toJSON();
+			return data;
+		};
+
+		return TubeGeometry;
+	}(BufferGeometry);
+
+	var WireframeGeometry = /*#__PURE__*/function (_BufferGeometry) {
+		_inheritsLoose(WireframeGeometry, _BufferGeometry);
+
+		function WireframeGeometry(geometry) {
+			var _this;
+
+			_this = _BufferGeometry.call(this) || this;
+			_this.type = 'WireframeGeometry';
+
+			if (geometry.isGeometry === true) {
+				console.error('THREE.WireframeGeometry no longer supports THREE.Geometry. Use THREE.BufferGeometry instead.');
+				return _assertThisInitialized(_this);
+			} // buffer
+
+
+			var vertices = []; // helper variables
+
+			var edge = [0, 0],
+					edges = {};
+			var vertex = new Vector3();
+
+			if (geometry.index !== null) {
+				// indexed BufferGeometry
+				var position = geometry.attributes.position;
+				var indices = geometry.index;
+				var groups = geometry.groups;
+
+				if (groups.length === 0) {
+					groups = [{
+						start: 0,
+						count: indices.count,
+						materialIndex: 0
+					}];
+				} // create a data structure that contains all eges without duplicates
+
+
+				for (var o = 0, ol = groups.length; o < ol; ++o) {
+					var group = groups[o];
+					var start = group.start;
+					var count = group.count;
+
+					for (var i = start, l = start + count; i < l; i += 3) {
+						for (var j = 0; j < 3; j++) {
+							var edge1 = indices.getX(i + j);
+							var edge2 = indices.getX(i + (j + 1) % 3);
+							edge[0] = Math.min(edge1, edge2); // sorting prevents duplicates
+
+							edge[1] = Math.max(edge1, edge2);
+							var key = edge[0] + ',' + edge[1];
+
+							if (edges[key] === undefined) {
+								edges[key] = {
+									index1: edge[0],
+									index2: edge[1]
+								};
+							}
+						}
+					}
+				} // generate vertices
+
+
+				for (var _key in edges) {
+					var e = edges[_key];
+					vertex.fromBufferAttribute(position, e.index1);
+					vertices.push(vertex.x, vertex.y, vertex.z);
+					vertex.fromBufferAttribute(position, e.index2);
+					vertices.push(vertex.x, vertex.y, vertex.z);
+				}
+			} else {
+				// non-indexed BufferGeometry
+				var _position = geometry.attributes.position;
+
+				for (var _i = 0, _l = _position.count / 3; _i < _l; _i++) {
+					for (var _j = 0; _j < 3; _j++) {
+						// three edges per triangle, an edge is represented as (index1, index2)
+						// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)
+						var index1 = 3 * _i + _j;
+						vertex.fromBufferAttribute(_position, index1);
+						vertices.push(vertex.x, vertex.y, vertex.z);
+						var index2 = 3 * _i + (_j + 1) % 3;
+						vertex.fromBufferAttribute(_position, index2);
+						vertices.push(vertex.x, vertex.y, vertex.z);
+					}
+				}
+			} // build geometry
+
+
+			_this.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+
+			return _this;
+		}
+
+		return WireframeGeometry;
+	}(BufferGeometry);
+
+	var Geometries = /*#__PURE__*/Object.freeze({
+		__proto__: null,
+		BoxGeometry: BoxGeometry,
+		BoxBufferGeometry: BoxGeometry,
+		CircleGeometry: CircleGeometry,
+		CircleBufferGeometry: CircleGeometry,
+		ConeGeometry: ConeGeometry,
+		ConeBufferGeometry: ConeGeometry,
+		CylinderGeometry: CylinderGeometry,
+		CylinderBufferGeometry: CylinderGeometry,
+		DodecahedronGeometry: DodecahedronGeometry,
+		DodecahedronBufferGeometry: DodecahedronGeometry,
+		EdgesGeometry: EdgesGeometry,
+		ExtrudeGeometry: ExtrudeGeometry,
+		ExtrudeBufferGeometry: ExtrudeGeometry,
+		IcosahedronGeometry: IcosahedronGeometry,
+		IcosahedronBufferGeometry: IcosahedronGeometry,
+		LatheGeometry: LatheGeometry,
+		LatheBufferGeometry: LatheGeometry,
+		OctahedronGeometry: OctahedronGeometry,
+		OctahedronBufferGeometry: OctahedronGeometry,
+		ParametricGeometry: ParametricGeometry,
+		ParametricBufferGeometry: ParametricGeometry,
+		PlaneGeometry: PlaneGeometry,
+		PlaneBufferGeometry: PlaneGeometry,
+		PolyhedronGeometry: PolyhedronGeometry,
+		PolyhedronBufferGeometry: PolyhedronGeometry,
+		RingGeometry: RingGeometry,
+		RingBufferGeometry: RingGeometry,
+		ShapeGeometry: ShapeGeometry,
+		ShapeBufferGeometry: ShapeGeometry,
+		SphereGeometry: SphereGeometry,
+		SphereBufferGeometry: SphereGeometry,
+		TetrahedronGeometry: TetrahedronGeometry,
+		TetrahedronBufferGeometry: TetrahedronGeometry,
+		TextGeometry: TextGeometry,
+		TextBufferGeometry: TextGeometry,
+		TorusGeometry: TorusGeometry,
+		TorusBufferGeometry: TorusGeometry,
+		TorusKnotGeometry: TorusKnotGeometry,
+		TorusKnotBufferGeometry: TorusKnotGeometry,
+		TubeGeometry: TubeGeometry,
+		TubeBufferGeometry: TubeGeometry,
+		WireframeGeometry: WireframeGeometry
+	});
+
+	/**
+	 * parameters = {
+	 *	color: <THREE.Color>
+	 * }
+	 */
+
+	var ShadowMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(ShadowMaterial, _Material);
+
+		function ShadowMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'ShadowMaterial';
+			_this.color = new Color(0x000000);
+			_this.transparent = true;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = ShadowMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			return this;
+		};
+
+		return ShadowMaterial;
+	}(Material);
+
+	ShadowMaterial.prototype.isShadowMaterial = true;
+
+	var RawShaderMaterial = /*#__PURE__*/function (_ShaderMaterial) {
+		_inheritsLoose(RawShaderMaterial, _ShaderMaterial);
+
+		function RawShaderMaterial(parameters) {
+			var _this;
+
+			_this = _ShaderMaterial.call(this, parameters) || this;
+			_this.type = 'RawShaderMaterial';
+			return _this;
+		}
+
+		return RawShaderMaterial;
+	}(ShaderMaterial);
+
+	RawShaderMaterial.prototype.isRawShaderMaterial = true;
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	roughness: <float>,
+	 *	metalness: <float>,
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	roughnessMap: new THREE.Texture( <Image> ),
+	 *
+	 *	metalnessMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	envMapIntensity: <float>
+	 *
+	 *	refractionRatio: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>,
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
+
+	function MeshStandardMaterial(parameters) {
+		Material.call(this);
+		this.defines = {
+			'STANDARD': ''
+		};
+		this.type = 'MeshStandardMaterial';
+		this.color = new Color(0xffffff); // diffuse
+
+		this.roughness = 1.0;
+		this.metalness = 0.0;
+		this.map = null;
+		this.lightMap = null;
+		this.lightMapIntensity = 1.0;
+		this.aoMap = null;
+		this.aoMapIntensity = 1.0;
+		this.emissive = new Color(0x000000);
+		this.emissiveIntensity = 1.0;
+		this.emissiveMap = null;
+		this.bumpMap = null;
+		this.bumpScale = 1;
+		this.normalMap = null;
+		this.normalMapType = TangentSpaceNormalMap;
+		this.normalScale = new Vector2(1, 1);
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+		this.roughnessMap = null;
+		this.metalnessMap = null;
+		this.alphaMap = null;
+		this.envMap = null;
+		this.envMapIntensity = 1.0;
+		this.refractionRatio = 0.98;
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+		this.wireframeLinecap = 'round';
+		this.wireframeLinejoin = 'round';
+		this.skinning = false;
+		this.morphTargets = false;
+		this.morphNormals = false;
+		this.flatShading = false;
+		this.vertexTangents = false;
+		this.setValues(parameters);
+	}
+
+	MeshStandardMaterial.prototype = Object.create(Material.prototype);
+	MeshStandardMaterial.prototype.constructor = MeshStandardMaterial;
+	MeshStandardMaterial.prototype.isMeshStandardMaterial = true;
+
+	MeshStandardMaterial.prototype.copy = function (source) {
+		Material.prototype.copy.call(this, source);
+		this.defines = {
+			'STANDARD': ''
+		};
+		this.color.copy(source.color);
+		this.roughness = source.roughness;
+		this.metalness = source.metalness;
+		this.map = source.map;
+		this.lightMap = source.lightMap;
+		this.lightMapIntensity = source.lightMapIntensity;
+		this.aoMap = source.aoMap;
+		this.aoMapIntensity = source.aoMapIntensity;
+		this.emissive.copy(source.emissive);
+		this.emissiveMap = source.emissiveMap;
+		this.emissiveIntensity = source.emissiveIntensity;
+		this.bumpMap = source.bumpMap;
+		this.bumpScale = source.bumpScale;
+		this.normalMap = source.normalMap;
+		this.normalMapType = source.normalMapType;
+		this.normalScale.copy(source.normalScale);
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+		this.roughnessMap = source.roughnessMap;
+		this.metalnessMap = source.metalnessMap;
+		this.alphaMap = source.alphaMap;
+		this.envMap = source.envMap;
+		this.envMapIntensity = source.envMapIntensity;
+		this.refractionRatio = source.refractionRatio;
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+		this.wireframeLinecap = source.wireframeLinecap;
+		this.wireframeLinejoin = source.wireframeLinejoin;
+		this.skinning = source.skinning;
+		this.morphTargets = source.morphTargets;
+		this.morphNormals = source.morphNormals;
+		this.flatShading = source.flatShading;
+		this.vertexTangents = source.vertexTangents;
+		return this;
+	};
+
+	/**
+	 * parameters = {
+	 *	clearcoat: <float>,
+	 *	clearcoatMap: new THREE.Texture( <Image> ),
+	 *	clearcoatRoughness: <float>,
+	 *	clearcoatRoughnessMap: new THREE.Texture( <Image> ),
+	 *	clearcoatNormalScale: <Vector2>,
+	 *	clearcoatNormalMap: new THREE.Texture( <Image> ),
+	 *
+	 *	reflectivity: <float>,
+	 *	ior: <float>,
+	 *
+	 *	sheen: <Color>,
+	 *
+	 *	transmission: <float>,
+	 *	transmissionMap: new THREE.Texture( <Image> )
+	 * }
+	 */
+
+	function MeshPhysicalMaterial(parameters) {
+		MeshStandardMaterial.call(this);
+		this.defines = {
+			'STANDARD': '',
+			'PHYSICAL': ''
+		};
+		this.type = 'MeshPhysicalMaterial';
+		this.clearcoat = 0.0;
+		this.clearcoatMap = null;
+		this.clearcoatRoughness = 0.0;
+		this.clearcoatRoughnessMap = null;
+		this.clearcoatNormalScale = new Vector2(1, 1);
+		this.clearcoatNormalMap = null;
+		this.reflectivity = 0.5; // maps to F0 = 0.04
+
+		Object.defineProperty(this, 'ior', {
+			get: function get() {
+				return (1 + 0.4 * this.reflectivity) / (1 - 0.4 * this.reflectivity);
+			},
+			set: function set(ior) {
+				this.reflectivity = MathUtils.clamp(2.5 * (ior - 1) / (ior + 1), 0, 1);
+			}
+		});
+		this.sheen = null; // null will disable sheen bsdf
+
+		this.transmission = 0.0;
+		this.transmissionMap = null;
+		this.setValues(parameters);
+	}
+
+	MeshPhysicalMaterial.prototype = Object.create(MeshStandardMaterial.prototype);
+	MeshPhysicalMaterial.prototype.constructor = MeshPhysicalMaterial;
+	MeshPhysicalMaterial.prototype.isMeshPhysicalMaterial = true;
+
+	MeshPhysicalMaterial.prototype.copy = function (source) {
+		MeshStandardMaterial.prototype.copy.call(this, source);
+		this.defines = {
+			'STANDARD': '',
+			'PHYSICAL': ''
+		};
+		this.clearcoat = source.clearcoat;
+		this.clearcoatMap = source.clearcoatMap;
+		this.clearcoatRoughness = source.clearcoatRoughness;
+		this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
+		this.clearcoatNormalMap = source.clearcoatNormalMap;
+		this.clearcoatNormalScale.copy(source.clearcoatNormalScale);
+		this.reflectivity = source.reflectivity;
+
+		if (source.sheen) {
+			this.sheen = (this.sheen || new Color()).copy(source.sheen);
+		} else {
+			this.sheen = null;
+		}
+
+		this.transmission = source.transmission;
+		this.transmissionMap = source.transmissionMap;
+		return this;
+	};
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	specular: <hex>,
+	 *	shininess: <float>,
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	specularMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	combine: THREE.MultiplyOperation,
+	 *	reflectivity: <float>,
+	 *	refractionRatio: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>,
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
+
+	var MeshPhongMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshPhongMaterial, _Material);
+
+		function MeshPhongMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'MeshPhongMaterial';
+			_this.color = new Color(0xffffff); // diffuse
+
+			_this.specular = new Color(0x111111);
+			_this.shininess = 30;
+			_this.map = null;
+			_this.lightMap = null;
+			_this.lightMapIntensity = 1.0;
+			_this.aoMap = null;
+			_this.aoMapIntensity = 1.0;
+			_this.emissive = new Color(0x000000);
+			_this.emissiveIntensity = 1.0;
+			_this.emissiveMap = null;
+			_this.bumpMap = null;
+			_this.bumpScale = 1;
+			_this.normalMap = null;
+			_this.normalMapType = TangentSpaceNormalMap;
+			_this.normalScale = new Vector2(1, 1);
+			_this.displacementMap = null;
+			_this.displacementScale = 1;
+			_this.displacementBias = 0;
+			_this.specularMap = null;
+			_this.alphaMap = null;
+			_this.envMap = null;
+			_this.combine = MultiplyOperation;
+			_this.reflectivity = 1;
+			_this.refractionRatio = 0.98;
+			_this.wireframe = false;
+			_this.wireframeLinewidth = 1;
+			_this.wireframeLinecap = 'round';
+			_this.wireframeLinejoin = 'round';
+			_this.skinning = false;
+			_this.morphTargets = false;
+			_this.morphNormals = false;
+			_this.flatShading = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshPhongMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.specular.copy(source.specular);
+			this.shininess = source.shininess;
+			this.map = source.map;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.emissive.copy(source.emissive);
+			this.emissiveMap = source.emissiveMap;
+			this.emissiveIntensity = source.emissiveIntensity;
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.specularMap = source.specularMap;
+			this.alphaMap = source.alphaMap;
+			this.envMap = source.envMap;
+			this.combine = source.combine;
+			this.reflectivity = source.reflectivity;
+			this.refractionRatio = source.refractionRatio;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.flatShading = source.flatShading;
+			return this;
+		};
+
+		return MeshPhongMaterial;
+	}(Material);
+
+	MeshPhongMaterial.prototype.isMeshPhongMaterial = true;
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *	gradientMap: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 * }
+	 */
+
+	var MeshToonMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshToonMaterial, _Material);
+
+		function MeshToonMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.defines = {
+				'TOON': ''
+			};
+			_this.type = 'MeshToonMaterial';
+			_this.color = new Color(0xffffff);
+			_this.map = null;
+			_this.gradientMap = null;
+			_this.lightMap = null;
+			_this.lightMapIntensity = 1.0;
+			_this.aoMap = null;
+			_this.aoMapIntensity = 1.0;
+			_this.emissive = new Color(0x000000);
+			_this.emissiveIntensity = 1.0;
+			_this.emissiveMap = null;
+			_this.bumpMap = null;
+			_this.bumpScale = 1;
+			_this.normalMap = null;
+			_this.normalMapType = TangentSpaceNormalMap;
+			_this.normalScale = new Vector2(1, 1);
+			_this.displacementMap = null;
+			_this.displacementScale = 1;
+			_this.displacementBias = 0;
+			_this.alphaMap = null;
+			_this.wireframe = false;
+			_this.wireframeLinewidth = 1;
+			_this.wireframeLinecap = 'round';
+			_this.wireframeLinejoin = 'round';
+			_this.skinning = false;
+			_this.morphTargets = false;
+			_this.morphNormals = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshToonMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.gradientMap = source.gradientMap;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.emissive.copy(source.emissive);
+			this.emissiveMap = source.emissiveMap;
+			this.emissiveIntensity = source.emissiveIntensity;
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.alphaMap = source.alphaMap;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			return this;
+		};
+
+		return MeshToonMaterial;
+	}(Material);
+
+	MeshToonMaterial.prototype.isMeshToonMaterial = true;
+
+	/**
+	 * parameters = {
+	 *	opacity: <float>,
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>,
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
+
+	var MeshNormalMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshNormalMaterial, _Material);
+
+		function MeshNormalMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'MeshNormalMaterial';
+			_this.bumpMap = null;
+			_this.bumpScale = 1;
+			_this.normalMap = null;
+			_this.normalMapType = TangentSpaceNormalMap;
+			_this.normalScale = new Vector2(1, 1);
+			_this.displacementMap = null;
+			_this.displacementScale = 1;
+			_this.displacementBias = 0;
+			_this.wireframe = false;
+			_this.wireframeLinewidth = 1;
+			_this.fog = false;
+			_this.skinning = false;
+			_this.morphTargets = false;
+			_this.morphNormals = false;
+			_this.flatShading = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshNormalMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.flatShading = source.flatShading;
+			return this;
+		};
+
+		return MeshNormalMaterial;
+	}(Material);
+
+	MeshNormalMaterial.prototype.isMeshNormalMaterial = true;
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	lightMap: new THREE.Texture( <Image> ),
+	 *	lightMapIntensity: <float>
+	 *
+	 *	aoMap: new THREE.Texture( <Image> ),
+	 *	aoMapIntensity: <float>
+	 *
+	 *	emissive: <hex>,
+	 *	emissiveIntensity: <float>
+	 *	emissiveMap: new THREE.Texture( <Image> ),
+	 *
+	 *	specularMap: new THREE.Texture( <Image> ),
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	envMap: new THREE.CubeTexture( [posx, negx, posy, negy, posz, negz] ),
+	 *	combine: THREE.Multiply,
+	 *	reflectivity: <float>,
+	 *	refractionRatio: <float>,
+	 *
+	 *	wireframe: <boolean>,
+	 *	wireframeLinewidth: <float>,
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 * }
+	 */
+
+	var MeshLambertMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshLambertMaterial, _Material);
+
+		function MeshLambertMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.type = 'MeshLambertMaterial';
+			_this.color = new Color(0xffffff); // diffuse
+
+			_this.map = null;
+			_this.lightMap = null;
+			_this.lightMapIntensity = 1.0;
+			_this.aoMap = null;
+			_this.aoMapIntensity = 1.0;
+			_this.emissive = new Color(0x000000);
+			_this.emissiveIntensity = 1.0;
+			_this.emissiveMap = null;
+			_this.specularMap = null;
+			_this.alphaMap = null;
+			_this.envMap = null;
+			_this.combine = MultiplyOperation;
+			_this.reflectivity = 1;
+			_this.refractionRatio = 0.98;
+			_this.wireframe = false;
+			_this.wireframeLinewidth = 1;
+			_this.wireframeLinecap = 'round';
+			_this.wireframeLinejoin = 'round';
+			_this.skinning = false;
+			_this.morphTargets = false;
+			_this.morphNormals = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshLambertMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.map = source.map;
+			this.lightMap = source.lightMap;
+			this.lightMapIntensity = source.lightMapIntensity;
+			this.aoMap = source.aoMap;
+			this.aoMapIntensity = source.aoMapIntensity;
+			this.emissive.copy(source.emissive);
+			this.emissiveMap = source.emissiveMap;
+			this.emissiveIntensity = source.emissiveIntensity;
+			this.specularMap = source.specularMap;
+			this.alphaMap = source.alphaMap;
+			this.envMap = source.envMap;
+			this.combine = source.combine;
+			this.reflectivity = source.reflectivity;
+			this.refractionRatio = source.refractionRatio;
+			this.wireframe = source.wireframe;
+			this.wireframeLinewidth = source.wireframeLinewidth;
+			this.wireframeLinecap = source.wireframeLinecap;
+			this.wireframeLinejoin = source.wireframeLinejoin;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			return this;
+		};
+
+		return MeshLambertMaterial;
+	}(Material);
+
+	MeshLambertMaterial.prototype.isMeshLambertMaterial = true;
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	matcap: new THREE.Texture( <Image> ),
+	 *
+	 *	map: new THREE.Texture( <Image> ),
+	 *
+	 *	bumpMap: new THREE.Texture( <Image> ),
+	 *	bumpScale: <float>,
+	 *
+	 *	normalMap: new THREE.Texture( <Image> ),
+	 *	normalMapType: THREE.TangentSpaceNormalMap,
+	 *	normalScale: <Vector2>,
+	 *
+	 *	displacementMap: new THREE.Texture( <Image> ),
+	 *	displacementScale: <float>,
+	 *	displacementBias: <float>,
+	 *
+	 *	alphaMap: new THREE.Texture( <Image> ),
+	 *
+	 *	skinning: <bool>,
+	 *	morphTargets: <bool>,
+	 *	morphNormals: <bool>
+	 *
+	 *	flatShading: <bool>
+	 * }
+	 */
+
+	var MeshMatcapMaterial = /*#__PURE__*/function (_Material) {
+		_inheritsLoose(MeshMatcapMaterial, _Material);
+
+		function MeshMatcapMaterial(parameters) {
+			var _this;
+
+			_this = _Material.call(this) || this;
+			_this.defines = {
+				'MATCAP': ''
+			};
+			_this.type = 'MeshMatcapMaterial';
+			_this.color = new Color(0xffffff); // diffuse
+
+			_this.matcap = null;
+			_this.map = null;
+			_this.bumpMap = null;
+			_this.bumpScale = 1;
+			_this.normalMap = null;
+			_this.normalMapType = TangentSpaceNormalMap;
+			_this.normalScale = new Vector2(1, 1);
+			_this.displacementMap = null;
+			_this.displacementScale = 1;
+			_this.displacementBias = 0;
+			_this.alphaMap = null;
+			_this.skinning = false;
+			_this.morphTargets = false;
+			_this.morphNormals = false;
+			_this.flatShading = false;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = MeshMatcapMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_Material.prototype.copy.call(this, source);
+
+			this.defines = {
+				'MATCAP': ''
+			};
+			this.color.copy(source.color);
+			this.matcap = source.matcap;
+			this.map = source.map;
+			this.bumpMap = source.bumpMap;
+			this.bumpScale = source.bumpScale;
+			this.normalMap = source.normalMap;
+			this.normalMapType = source.normalMapType;
+			this.normalScale.copy(source.normalScale);
+			this.displacementMap = source.displacementMap;
+			this.displacementScale = source.displacementScale;
+			this.displacementBias = source.displacementBias;
+			this.alphaMap = source.alphaMap;
+			this.skinning = source.skinning;
+			this.morphTargets = source.morphTargets;
+			this.morphNormals = source.morphNormals;
+			this.flatShading = source.flatShading;
+			return this;
+		};
+
+		return MeshMatcapMaterial;
+	}(Material);
+
+	MeshMatcapMaterial.prototype.isMeshMatcapMaterial = true;
+
+	/**
+	 * parameters = {
+	 *	color: <hex>,
+	 *	opacity: <float>,
+	 *
+	 *	linewidth: <float>,
+	 *
+	 *	scale: <float>,
+	 *	dashSize: <float>,
+	 *	gapSize: <float>
+	 * }
+	 */
+
+	var LineDashedMaterial = /*#__PURE__*/function (_LineBasicMaterial) {
+		_inheritsLoose(LineDashedMaterial, _LineBasicMaterial);
+
+		function LineDashedMaterial(parameters) {
+			var _this;
+
+			_this = _LineBasicMaterial.call(this) || this;
+			_this.type = 'LineDashedMaterial';
+			_this.scale = 1;
+			_this.dashSize = 3;
+			_this.gapSize = 1;
+
+			_this.setValues(parameters);
+
+			return _this;
+		}
+
+		var _proto = LineDashedMaterial.prototype;
+
+		_proto.copy = function copy(source) {
+			_LineBasicMaterial.prototype.copy.call(this, source);
+
+			this.scale = source.scale;
+			this.dashSize = source.dashSize;
+			this.gapSize = source.gapSize;
+			return this;
+		};
+
+		return LineDashedMaterial;
+	}(LineBasicMaterial);
+
+	LineDashedMaterial.prototype.isLineDashedMaterial = true;
+
+	var Materials = /*#__PURE__*/Object.freeze({
+		__proto__: null,
+		ShadowMaterial: ShadowMaterial,
+		SpriteMaterial: SpriteMaterial,
+		RawShaderMaterial: RawShaderMaterial,
+		ShaderMaterial: ShaderMaterial,
+		PointsMaterial: PointsMaterial,
+		MeshPhysicalMaterial: MeshPhysicalMaterial,
+		MeshStandardMaterial: MeshStandardMaterial,
+		MeshPhongMaterial: MeshPhongMaterial,
+		MeshToonMaterial: MeshToonMaterial,
+		MeshNormalMaterial: MeshNormalMaterial,
+		MeshLambertMaterial: MeshLambertMaterial,
+		MeshDepthMaterial: MeshDepthMaterial,
+		MeshDistanceMaterial: MeshDistanceMaterial,
+		MeshBasicMaterial: MeshBasicMaterial,
+		MeshMatcapMaterial: MeshMatcapMaterial,
+		LineDashedMaterial: LineDashedMaterial,
+		LineBasicMaterial: LineBasicMaterial,
+		Material: Material
+	});
+
+	var AnimationUtils = {
+		// same as Array.prototype.slice, but also works on typed arrays
+		arraySlice: function arraySlice(array, from, to) {
+			if (AnimationUtils.isTypedArray(array)) {
+				// in ios9 array.subarray(from, undefined) will return empty array
+				// but array.subarray(from) or array.subarray(from, len) is correct
+				return new array.constructor(array.subarray(from, to !== undefined ? to : array.length));
+			}
+
+			return array.slice(from, to);
+		},
+		// converts an array to a specific type
+		convertArray: function convertArray(array, type, forceClone) {
+			if (!array || // let 'undefined' and 'null' pass
+			!forceClone && array.constructor === type) return array;
+
+			if (typeof type.BYTES_PER_ELEMENT === 'number') {
+				return new type(array); // create typed array
+			}
+
+			return Array.prototype.slice.call(array); // create Array
+		},
+		isTypedArray: function isTypedArray(object) {
+			return ArrayBuffer.isView(object) && !(object instanceof DataView);
+		},
+		// returns an array by which times and values can be sorted
+		getKeyframeOrder: function getKeyframeOrder(times) {
+			function compareTime(i, j) {
+				return times[i] - times[j];
+			}
+
+			var n = times.length;
+			var result = new Array(n);
+
+			for (var i = 0; i !== n; ++i) {
+				result[i] = i;
+			}
+
+			result.sort(compareTime);
+			return result;
+		},
+		// uses the array previously returned by 'getKeyframeOrder' to sort data
+		sortedArray: function sortedArray(values, stride, order) {
+			var nValues = values.length;
+			var result = new values.constructor(nValues);
+
+			for (var i = 0, dstOffset = 0; dstOffset !== nValues; ++i) {
+				var srcOffset = order[i] * stride;
+
+				for (var j = 0; j !== stride; ++j) {
+					result[dstOffset++] = values[srcOffset + j];
+				}
+			}
+
+			return result;
+		},
+		// function for parsing AOS keyframe formats
+		flattenJSON: function flattenJSON(jsonKeys, times, values, valuePropertyName) {
+			var i = 1,
+					key = jsonKeys[0];
+
+			while (key !== undefined && key[valuePropertyName] === undefined) {
+				key = jsonKeys[i++];
+			}
+
+			if (key === undefined) return; // no data
+
+			var value = key[valuePropertyName];
+			if (value === undefined) return; // no data
+
+			if (Array.isArray(value)) {
+				do {
+					value = key[valuePropertyName];
+
+					if (value !== undefined) {
+						times.push(key.time);
+						values.push.apply(values, value); // push all elements
+					}
+
+					key = jsonKeys[i++];
+				} while (key !== undefined);
+			} else if (value.toArray !== undefined) {
+				// ...assume THREE.Math-ish
+				do {
+					value = key[valuePropertyName];
+
+					if (value !== undefined) {
+						times.push(key.time);
+						value.toArray(values, values.length);
+					}
+
+					key = jsonKeys[i++];
+				} while (key !== undefined);
+			} else {
+				// otherwise push as-is
+				do {
+					value = key[valuePropertyName];
+
+					if (value !== undefined) {
+						times.push(key.time);
+						values.push(value);
+					}
+
+					key = jsonKeys[i++];
+				} while (key !== undefined);
+			}
+		},
+		subclip: function subclip(sourceClip, name, startFrame, endFrame, fps) {
+			if (fps === void 0) {
+				fps = 30;
+			}
+
+			var clip = sourceClip.clone();
+			clip.name = name;
+			var tracks = [];
+
+			for (var i = 0; i < clip.tracks.length; ++i) {
+				var track = clip.tracks[i];
+				var valueSize = track.getValueSize();
+				var times = [];
+				var values = [];
+
+				for (var j = 0; j < track.times.length; ++j) {
+					var frame = track.times[j] * fps;
+					if (frame < startFrame || frame >= endFrame) continue;
+					times.push(track.times[j]);
+
+					for (var k = 0; k < valueSize; ++k) {
+						values.push(track.values[j * valueSize + k]);
+					}
+				}
+
+				if (times.length === 0) continue;
+				track.times = AnimationUtils.convertArray(times, track.times.constructor);
+				track.values = AnimationUtils.convertArray(values, track.values.constructor);
+				tracks.push(track);
+			}
+
+			clip.tracks = tracks; // find minimum .times value across all tracks in the trimmed clip
+
+			var minStartTime = Infinity;
+
+			for (var _i = 0; _i < clip.tracks.length; ++_i) {
+				if (minStartTime > clip.tracks[_i].times[0]) {
+					minStartTime = clip.tracks[_i].times[0];
+				}
+			} // shift all tracks such that clip begins at t=0
+
+
+			for (var _i2 = 0; _i2 < clip.tracks.length; ++_i2) {
+				clip.tracks[_i2].shift(-1 * minStartTime);
+			}
+
+			clip.resetDuration();
+			return clip;
+		},
+		makeClipAdditive: function makeClipAdditive(targetClip, referenceFrame, referenceClip, fps) {
+			if (referenceFrame === void 0) {
+				referenceFrame = 0;
+			}
+
+			if (referenceClip === void 0) {
+				referenceClip = targetClip;
+			}
+
+			if (fps === void 0) {
+				fps = 30;
+			}
+
+			if (fps <= 0) fps = 30;
+			var numTracks = referenceClip.tracks.length;
+			var referenceTime = referenceFrame / fps; // Make each track's values relative to the values at the reference frame
+
+			var _loop = function _loop(i) {
+				var referenceTrack = referenceClip.tracks[i];
+				var referenceTrackType = referenceTrack.ValueTypeName; // Skip this track if it's non-numeric
+
+				if (referenceTrackType === 'bool' || referenceTrackType === 'string') return "continue"; // Find the track in the target clip whose name and type matches the reference track
+
+				var targetTrack = targetClip.tracks.find(function (track) {
+					return track.name === referenceTrack.name && track.ValueTypeName === referenceTrackType;
+				});
+				if (targetTrack === undefined) return "continue";
+				var referenceOffset = 0;
+				var referenceValueSize = referenceTrack.getValueSize();
+
+				if (referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
+					referenceOffset = referenceValueSize / 3;
+				}
+
+				var targetOffset = 0;
+				var targetValueSize = targetTrack.getValueSize();
+
+				if (targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline) {
+					targetOffset = targetValueSize / 3;
+				}
+
+				var lastIndex = referenceTrack.times.length - 1;
+				var referenceValue = void 0; // Find the value to subtract out of the track
+
+				if (referenceTime <= referenceTrack.times[0]) {
+					// Reference frame is earlier than the first keyframe, so just use the first keyframe
+					var startIndex = referenceOffset;
+					var endIndex = referenceValueSize - referenceOffset;
+					referenceValue = AnimationUtils.arraySlice(referenceTrack.values, startIndex, endIndex);
+				} else if (referenceTime >= referenceTrack.times[lastIndex]) {
+					// Reference frame is after the last keyframe, so just use the last keyframe
+					var _startIndex = lastIndex * referenceValueSize + referenceOffset;
+
+					var _endIndex = _startIndex + referenceValueSize - referenceOffset;
+
+					referenceValue = AnimationUtils.arraySlice(referenceTrack.values, _startIndex, _endIndex);
+				} else {
+					// Interpolate to the reference value
+					var interpolant = referenceTrack.createInterpolant();
+					var _startIndex2 = referenceOffset;
+
+					var _endIndex2 = referenceValueSize - referenceOffset;
+
+					interpolant.evaluate(referenceTime);
+					referenceValue = AnimationUtils.arraySlice(interpolant.resultBuffer, _startIndex2, _endIndex2);
+				} // Conjugate the quaternion
+
+
+				if (referenceTrackType === 'quaternion') {
+					var referenceQuat = new Quaternion().fromArray(referenceValue).normalize().conjugate();
+					referenceQuat.toArray(referenceValue);
+				} // Subtract the reference value from all of the track values
+
+
+				var numTimes = targetTrack.times.length;
+
+				for (var j = 0; j < numTimes; ++j) {
+					var valueStart = j * targetValueSize + targetOffset;
+
+					if (referenceTrackType === 'quaternion') {
+						// Multiply the conjugate for quaternion track types
+						Quaternion.multiplyQuaternionsFlat(targetTrack.values, valueStart, referenceValue, 0, targetTrack.values, valueStart);
+					} else {
+						var valueEnd = targetValueSize - targetOffset * 2; // Subtract each value for all other numeric track types
+
+						for (var k = 0; k < valueEnd; ++k) {
+							targetTrack.values[valueStart + k] -= referenceValue[k];
+						}
+					}
+				}
+			};
+
+			for (var i = 0; i < numTracks; ++i) {
+				var _ret = _loop(i);
+
+				if (_ret === "continue") continue;
+			}
+
+			targetClip.blendMode = AdditiveAnimationBlendMode;
+			return targetClip;
+		}
+	};
+
+	/**
+	 * Abstract base class of interpolants over parametric samples.
+	 *
+	 * The parameter domain is one dimensional, typically the time or a path
+	 * along a curve defined by the data.
+	 *
+	 * The sample values can have any dimensionality and derived classes may
+	 * apply special interpretations to the data.
+	 *
+	 * This class provides the interval seek in a Template Method, deferring
+	 * the actual interpolation to derived classes.
+	 *
+	 * Time complexity is O(1) for linear access crossing at most two points
+	 * and O(log N) for random access, where N is the number of positions.
+	 *
+	 * References:
+	 *
+	 * 		http://www.oodesign.com/template-method-pattern.html
+	 *
+	 */
+	function Interpolant(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+		this.parameterPositions = parameterPositions;
+		this._cachedIndex = 0;
+		this.resultBuffer = resultBuffer !== undefined ? resultBuffer : new sampleValues.constructor(sampleSize);
+		this.sampleValues = sampleValues;
+		this.valueSize = sampleSize;
+	}
+
+	Object.assign(Interpolant.prototype, {
+		evaluate: function evaluate(t) {
+			var pp = this.parameterPositions;
+			var i1 = this._cachedIndex,
+					t1 = pp[i1],
+					t0 = pp[i1 - 1];
+
+			validate_interval: {
+				seek: {
+					var right;
+
+					linear_scan: {
+						//- See http://jsperf.com/comparison-to-undefined/3
+						//- slower code:
+						//-
+						//- 				if ( t >= t1 || t1 === undefined ) {
+						forward_scan: if (!(t < t1)) {
+							for (var giveUpAt = i1 + 2;;) {
+								if (t1 === undefined) {
+									if (t < t0) break forward_scan; // after end
+
+									i1 = pp.length;
+									this._cachedIndex = i1;
+									return this.afterEnd_(i1 - 1, t, t0);
+								}
+
+								if (i1 === giveUpAt) break; // this loop
+
+								t0 = t1;
+								t1 = pp[++i1];
+
+								if (t < t1) {
+									// we have arrived at the sought interval
+									break seek;
+								}
+							} // prepare binary search on the right side of the index
+
+
+							right = pp.length;
+							break linear_scan;
+						} //- slower code:
+						//-					if ( t < t0 || t0 === undefined ) {
+
+
+						if (!(t >= t0)) {
+							// looping?
+							var t1global = pp[1];
+
+							if (t < t1global) {
+								i1 = 2; // + 1, using the scan for the details
+
+								t0 = t1global;
+							} // linear reverse scan
+
+
+							for (var _giveUpAt = i1 - 2;;) {
+								if (t0 === undefined) {
+									// before start
+									this._cachedIndex = 0;
+									return this.beforeStart_(0, t, t1);
+								}
+
+								if (i1 === _giveUpAt) break; // this loop
+
+								t1 = t0;
+								t0 = pp[--i1 - 1];
+
+								if (t >= t0) {
+									// we have arrived at the sought interval
+									break seek;
+								}
+							} // prepare binary search on the left side of the index
+
+
+							right = i1;
+							i1 = 0;
+							break linear_scan;
+						} // the interval is valid
+
+
+						break validate_interval;
+					} // linear scan
+					// binary search
+
+
+					while (i1 < right) {
+						var mid = i1 + right >>> 1;
+
+						if (t < pp[mid]) {
+							right = mid;
+						} else {
+							i1 = mid + 1;
+						}
+					}
+
+					t1 = pp[i1];
+					t0 = pp[i1 - 1]; // check boundary cases, again
+
+					if (t0 === undefined) {
+						this._cachedIndex = 0;
+						return this.beforeStart_(0, t, t1);
+					}
+
+					if (t1 === undefined) {
+						i1 = pp.length;
+						this._cachedIndex = i1;
+						return this.afterEnd_(i1 - 1, t0, t);
+					}
+				} // seek
+
+
+				this._cachedIndex = i1;
+				this.intervalChanged_(i1, t0, t1);
+			} // validate_interval
+
+
+			return this.interpolate_(i1, t0, t, t1);
+		},
+		settings: null,
+		// optional, subclass-specific settings structure
+		// Note: The indirection allows central control of many interpolants.
+		// --- Protected interface
+		DefaultSettings_: {},
+		getSettings_: function getSettings_() {
+			return this.settings || this.DefaultSettings_;
+		},
+		copySampleValue_: function copySampleValue_(index) {
+			// copies a sample value to the result buffer
+			var result = this.resultBuffer,
+					values = this.sampleValues,
+					stride = this.valueSize,
+					offset = index * stride;
+
+			for (var i = 0; i !== stride; ++i) {
+				result[i] = values[offset + i];
+			}
+
+			return result;
+		},
+		// Template methods for derived classes:
+		interpolate_: function interpolate_()
+		/* i1, t0, t, t1 */
+		{
+			throw new Error('call to abstract method'); // implementations shall return this.resultBuffer
+		},
+		intervalChanged_: function intervalChanged_()
+		/* i1, t0, t1 */
+		{// empty
+		}
+	}); // DECLARE ALIAS AFTER assign prototype
+
+	Object.assign(Interpolant.prototype, {
+		//( 0, t, t0 ), returns this.resultBuffer
+		beforeStart_: Interpolant.prototype.copySampleValue_,
+		//( N-1, tN-1, t ), returns this.resultBuffer
+		afterEnd_: Interpolant.prototype.copySampleValue_
+	});
+
+	/**
+	 * Fast and simple cubic spline interpolant.
+	 *
+	 * It was derived from a Hermitian construction setting the first derivative
+	 * at each sample position to the linear slope between neighboring positions
+	 * over their parameter interval.
+	 */
+
+	function CubicInterpolant(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+		Interpolant.call(this, parameterPositions, sampleValues, sampleSize, resultBuffer);
+		this._weightPrev = -0;
+		this._offsetPrev = -0;
+		this._weightNext = -0;
+		this._offsetNext = -0;
+	}
+
+	CubicInterpolant.prototype = Object.assign(Object.create(Interpolant.prototype), {
+		constructor: CubicInterpolant,
+		DefaultSettings_: {
+			endingStart: ZeroCurvatureEnding,
+			endingEnd: ZeroCurvatureEnding
+		},
+		intervalChanged_: function intervalChanged_(i1, t0, t1) {
+			var pp = this.parameterPositions;
+			var iPrev = i1 - 2,
+					iNext = i1 + 1,
+					tPrev = pp[iPrev],
+					tNext = pp[iNext];
+
+			if (tPrev === undefined) {
+				switch (this.getSettings_().endingStart) {
+					case ZeroSlopeEnding:
+						// f'(t0) = 0
+						iPrev = i1;
+						tPrev = 2 * t0 - t1;
+						break;
+
+					case WrapAroundEnding:
+						// use the other end of the curve
+						iPrev = pp.length - 2;
+						tPrev = t0 + pp[iPrev] - pp[iPrev + 1];
+						break;
+
+					default:
+						// ZeroCurvatureEnding
+						// f''(t0) = 0 a.k.a. Natural Spline
+						iPrev = i1;
+						tPrev = t1;
+				}
+			}
+
+			if (tNext === undefined) {
+				switch (this.getSettings_().endingEnd) {
+					case ZeroSlopeEnding:
+						// f'(tN) = 0
+						iNext = i1;
+						tNext = 2 * t1 - t0;
+						break;
+
+					case WrapAroundEnding:
+						// use the other end of the curve
+						iNext = 1;
+						tNext = t1 + pp[1] - pp[0];
+						break;
+
+					default:
+						// ZeroCurvatureEnding
+						// f''(tN) = 0, a.k.a. Natural Spline
+						iNext = i1 - 1;
+						tNext = t0;
+				}
+			}
+
+			var halfDt = (t1 - t0) * 0.5,
+					stride = this.valueSize;
+			this._weightPrev = halfDt / (t0 - tPrev);
+			this._weightNext = halfDt / (tNext - t1);
+			this._offsetPrev = iPrev * stride;
+			this._offsetNext = iNext * stride;
+		},
+		interpolate_: function interpolate_(i1, t0, t, t1) {
+			var result = this.resultBuffer,
+					values = this.sampleValues,
+					stride = this.valueSize,
+					o1 = i1 * stride,
+					o0 = o1 - stride,
+					oP = this._offsetPrev,
+					oN = this._offsetNext,
+					wP = this._weightPrev,
+					wN = this._weightNext,
+					p = (t - t0) / (t1 - t0),
+					pp = p * p,
+					ppp = pp * p; // evaluate polynomials
+
+			var sP = -wP * ppp + 2 * wP * pp - wP * p;
+			var s0 = (1 + wP) * ppp + (-1.5 - 2 * wP) * pp + (-0.5 + wP) * p + 1;
+			var s1 = (-1 - wN) * ppp + (1.5 + wN) * pp + 0.5 * p;
+			var sN = wN * ppp - wN * pp; // combine data linearly
+
+			for (var i = 0; i !== stride; ++i) {
+				result[i] = sP * values[oP + i] + s0 * values[o0 + i] + s1 * values[o1 + i] + sN * values[oN + i];
+			}
+
+			return result;
+		}
+	});
+
+	function LinearInterpolant(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+		Interpolant.call(this, parameterPositions, sampleValues, sampleSize, resultBuffer);
+	}
+
+	LinearInterpolant.prototype = Object.assign(Object.create(Interpolant.prototype), {
+		constructor: LinearInterpolant,
+		interpolate_: function interpolate_(i1, t0, t, t1) {
+			var result = this.resultBuffer,
+					values = this.sampleValues,
+					stride = this.valueSize,
+					offset1 = i1 * stride,
+					offset0 = offset1 - stride,
+					weight1 = (t - t0) / (t1 - t0),
+					weight0 = 1 - weight1;
+
+			for (var i = 0; i !== stride; ++i) {
+				result[i] = values[offset0 + i] * weight0 + values[offset1 + i] * weight1;
+			}
+
+			return result;
+		}
+	});
+
+	/**
+	 *
+	 * Interpolant that evaluates to the sample value at the position preceeding
+	 * the parameter.
+	 */
+
+	function DiscreteInterpolant(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+		Interpolant.call(this, parameterPositions, sampleValues, sampleSize, resultBuffer);
+	}
+
+	DiscreteInterpolant.prototype = Object.assign(Object.create(Interpolant.prototype), {
+		constructor: DiscreteInterpolant,
+		interpolate_: function interpolate_(i1
+		/*, t0, t, t1 */
+		) {
+			return this.copySampleValue_(i1 - 1);
+		}
+	});
+
+	var KeyframeTrack = /*#__PURE__*/function () {
+		function KeyframeTrack(name, times, values, interpolation) {
+			if (name === undefined) throw new Error('THREE.KeyframeTrack: track name is undefined');
+			if (times === undefined || times.length === 0) throw new Error('THREE.KeyframeTrack: no keyframes in track named ' + name);
+			this.name = name;
+			this.times = AnimationUtils.convertArray(times, this.TimeBufferType);
+			this.values = AnimationUtils.convertArray(values, this.ValueBufferType);
+			this.setInterpolation(interpolation || this.DefaultInterpolation);
+		} // Serialization (in static context, because of constructor invocation
+		// and automatic invocation of .toJSON):
+
+
+		KeyframeTrack.toJSON = function toJSON(track) {
+			var trackType = track.constructor;
+			var json; // derived classes can define a static toJSON method
+
+			if (trackType.toJSON !== this.toJSON) {
+				json = trackType.toJSON(track);
+			} else {
+				// by default, we assume the data can be serialized as-is
+				json = {
+					'name': track.name,
+					'times': AnimationUtils.convertArray(track.times, Array),
+					'values': AnimationUtils.convertArray(track.values, Array)
+				};
+				var interpolation = track.getInterpolation();
+
+				if (interpolation !== track.DefaultInterpolation) {
+					json.interpolation = interpolation;
+				}
+			}
+
+			json.type = track.ValueTypeName; // mandatory
+
+			return json;
+		};
+
+		var _proto = KeyframeTrack.prototype;
+
+		_proto.InterpolantFactoryMethodDiscrete = function InterpolantFactoryMethodDiscrete(result) {
+			return new DiscreteInterpolant(this.times, this.values, this.getValueSize(), result);
+		};
+
+		_proto.InterpolantFactoryMethodLinear = function InterpolantFactoryMethodLinear(result) {
+			return new LinearInterpolant(this.times, this.values, this.getValueSize(), result);
+		};
+
+		_proto.InterpolantFactoryMethodSmooth = function InterpolantFactoryMethodSmooth(result) {
+			return new CubicInterpolant(this.times, this.values, this.getValueSize(), result);
+		};
+
+		_proto.setInterpolation = function setInterpolation(interpolation) {
+			var factoryMethod;
+
+			switch (interpolation) {
+				case InterpolateDiscrete:
+					factoryMethod = this.InterpolantFactoryMethodDiscrete;
+					break;
+
+				case InterpolateLinear:
+					factoryMethod = this.InterpolantFactoryMethodLinear;
+					break;
+
+				case InterpolateSmooth:
+					factoryMethod = this.InterpolantFactoryMethodSmooth;
+					break;
+			}
+
+			if (factoryMethod === undefined) {
+				var message = 'unsupported interpolation for ' + this.ValueTypeName + ' keyframe track named ' + this.name;
+
+				if (this.createInterpolant === undefined) {
+					// fall back to default, unless the default itself is messed up
+					if (interpolation !== this.DefaultInterpolation) {
+						this.setInterpolation(this.DefaultInterpolation);
+					} else {
+						throw new Error(message); // fatal, in this case
+					}
+				}
+
+				console.warn('THREE.KeyframeTrack:', message);
+				return this;
+			}
+
+			this.createInterpolant = factoryMethod;
+			return this;
+		};
+
+		_proto.getInterpolation = function getInterpolation() {
+			switch (this.createInterpolant) {
+				case this.InterpolantFactoryMethodDiscrete:
+					return InterpolateDiscrete;
+
+				case this.InterpolantFactoryMethodLinear:
+					return InterpolateLinear;
+
+				case this.InterpolantFactoryMethodSmooth:
+					return InterpolateSmooth;
+			}
+		};
+
+		_proto.getValueSize = function getValueSize() {
+			return this.values.length / this.times.length;
+		} // move all keyframes either forwards or backwards in time
+		;
+
+		_proto.shift = function shift(timeOffset) {
+			if (timeOffset !== 0.0) {
+				var times = this.times;
+
+				for (var i = 0, n = times.length; i !== n; ++i) {
+					times[i] += timeOffset;
+				}
+			}
+
+			return this;
+		} // scale all keyframe times by a factor (useful for frame <-> seconds conversions)
+		;
+
+		_proto.scale = function scale(timeScale) {
+			if (timeScale !== 1.0) {
+				var times = this.times;
+
+				for (var i = 0, n = times.length; i !== n; ++i) {
+					times[i] *= timeScale;
+				}
+			}
+
+			return this;
+		} // removes keyframes before and after animation without changing any values within the range [startTime, endTime].
+		// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
+		;
+
+		_proto.trim = function trim(startTime, endTime) {
+			var times = this.times,
+					nKeys = times.length;
+			var from = 0,
+					to = nKeys - 1;
+
+			while (from !== nKeys && times[from] < startTime) {
+				++from;
+			}
+
+			while (to !== -1 && times[to] > endTime) {
+				--to;
+			}
+
+			++to; // inclusive -> exclusive bound
+
+			if (from !== 0 || to !== nKeys) {
+				// empty tracks are forbidden, so keep at least one keyframe
+				if (from >= to) {
+					to = Math.max(to, 1);
+					from = to - 1;
+				}
+
+				var stride = this.getValueSize();
+				this.times = AnimationUtils.arraySlice(times, from, to);
+				this.values = AnimationUtils.arraySlice(this.values, from * stride, to * stride);
+			}
+
+			return this;
+		} // ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
+		;
+
+		_proto.validate = function validate() {
+			var valid = true;
+			var valueSize = this.getValueSize();
+
+			if (valueSize - Math.floor(valueSize) !== 0) {
+				console.error('THREE.KeyframeTrack: Invalid value size in track.', this);
+				valid = false;
+			}
+
+			var times = this.times,
+					values = this.values,
+					nKeys = times.length;
+
+			if (nKeys === 0) {
+				console.error('THREE.KeyframeTrack: Track is empty.', this);
+				valid = false;
+			}
+
+			var prevTime = null;
+
+			for (var i = 0; i !== nKeys; i++) {
+				var currTime = times[i];
+
+				if (typeof currTime === 'number' && isNaN(currTime)) {
+					console.error('THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime);
+					valid = false;
+					break;
+				}
+
+				if (prevTime !== null && prevTime > currTime) {
+					console.error('THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime);
+					valid = false;
+					break;
+				}
+
+				prevTime = currTime;
+			}
+
+			if (values !== undefined) {
+				if (AnimationUtils.isTypedArray(values)) {
+					for (var _i = 0, n = values.length; _i !== n; ++_i) {
+						var value = values[_i];
+
+						if (isNaN(value)) {
+							console.error('THREE.KeyframeTrack: Value is not a valid number.', this, _i, value);
+							valid = false;
+							break;
+						}
+					}
+				}
+			}
+
+			return valid;
+		} // removes equivalent sequential keys as common in morph target sequences
+		// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
+		;
+
+		_proto.optimize = function optimize() {
+			// times or values may be shared with other tracks, so overwriting is unsafe
+			var times = AnimationUtils.arraySlice(this.times),
+					values = AnimationUtils.arraySlice(this.values),
+					stride = this.getValueSize(),
+					smoothInterpolation = this.getInterpolation() === InterpolateSmooth,
+					lastIndex = times.length - 1;
+			var writeIndex = 1;
+
+			for (var i = 1; i < lastIndex; ++i) {
+				var keep = false;
+				var time = times[i];
+				var timeNext = times[i + 1]; // remove adjacent keyframes scheduled at the same time
+
+				if (time !== timeNext && (i !== 1 || time !== times[0])) {
+					if (!smoothInterpolation) {
+						// remove unnecessary keyframes same as their neighbors
+						var offset = i * stride,
+								offsetP = offset - stride,
+								offsetN = offset + stride;
+
+						for (var j = 0; j !== stride; ++j) {
+							var value = values[offset + j];
+
+							if (value !== values[offsetP + j] || value !== values[offsetN + j]) {
+								keep = true;
+								break;
+							}
+						}
+					} else {
+						keep = true;
+					}
+				} // in-place compaction
+
+
+				if (keep) {
+					if (i !== writeIndex) {
+						times[writeIndex] = times[i];
+						var readOffset = i * stride,
+								writeOffset = writeIndex * stride;
+
+						for (var _j = 0; _j !== stride; ++_j) {
+							values[writeOffset + _j] = values[readOffset + _j];
+						}
+					}
+
+					++writeIndex;
+				}
+			} // flush last keyframe (compaction looks ahead)
+
+
+			if (lastIndex > 0) {
+				times[writeIndex] = times[lastIndex];
+
+				for (var _readOffset = lastIndex * stride, _writeOffset = writeIndex * stride, _j2 = 0; _j2 !== stride; ++_j2) {
+					values[_writeOffset + _j2] = values[_readOffset + _j2];
+				}
+
+				++writeIndex;
+			}
+
+			if (writeIndex !== times.length) {
+				this.times = AnimationUtils.arraySlice(times, 0, writeIndex);
+				this.values = AnimationUtils.arraySlice(values, 0, writeIndex * stride);
+			} else {
+				this.times = times;
+				this.values = values;
+			}
+
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			var times = AnimationUtils.arraySlice(this.times, 0);
+			var values = AnimationUtils.arraySlice(this.values, 0);
+			var TypedKeyframeTrack = this.constructor;
+			var track = new TypedKeyframeTrack(this.name, times, values); // Interpolant argument to constructor is not saved, so copy the factory method directly.
+
+			track.createInterpolant = this.createInterpolant;
+			return track;
+		};
+
+		return KeyframeTrack;
+	}();
+
+	KeyframeTrack.prototype.TimeBufferType = Float32Array;
+	KeyframeTrack.prototype.ValueBufferType = Float32Array;
+	KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
+
+	/**
+	 * A Track of Boolean keyframe values.
+	 */
+
+	var BooleanKeyframeTrack = /*#__PURE__*/function (_KeyframeTrack) {
+		_inheritsLoose(BooleanKeyframeTrack, _KeyframeTrack);
+
+		function BooleanKeyframeTrack() {
+			return _KeyframeTrack.apply(this, arguments) || this;
+		}
+
+		return BooleanKeyframeTrack;
+	}(KeyframeTrack);
+
+	BooleanKeyframeTrack.prototype.ValueTypeName = 'bool';
+	BooleanKeyframeTrack.prototype.ValueBufferType = Array;
+	BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
+	BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
+	BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined; // Note: Actually this track could have a optimized / compressed
+
+	/**
+	 * A Track of keyframe values that represent color.
+	 */
+
+	var ColorKeyframeTrack = /*#__PURE__*/function (_KeyframeTrack) {
+		_inheritsLoose(ColorKeyframeTrack, _KeyframeTrack);
+
+		function ColorKeyframeTrack() {
+			return _KeyframeTrack.apply(this, arguments) || this;
+		}
+
+		return ColorKeyframeTrack;
+	}(KeyframeTrack);
+
+	ColorKeyframeTrack.prototype.ValueTypeName = 'color'; // ValueBufferType is inherited
+
+	/**
+	 * A Track of numeric keyframe values.
+	 */
+
+	var NumberKeyframeTrack = /*#__PURE__*/function (_KeyframeTrack) {
+		_inheritsLoose(NumberKeyframeTrack, _KeyframeTrack);
+
+		function NumberKeyframeTrack() {
+			return _KeyframeTrack.apply(this, arguments) || this;
+		}
+
+		return NumberKeyframeTrack;
+	}(KeyframeTrack);
+
+	NumberKeyframeTrack.prototype.ValueTypeName = 'number'; // ValueBufferType is inherited
+
+	/**
+	 * Spherical linear unit quaternion interpolant.
+	 */
+
+	function QuaternionLinearInterpolant(parameterPositions, sampleValues, sampleSize, resultBuffer) {
+		Interpolant.call(this, parameterPositions, sampleValues, sampleSize, resultBuffer);
+	}
+
+	QuaternionLinearInterpolant.prototype = Object.assign(Object.create(Interpolant.prototype), {
+		constructor: QuaternionLinearInterpolant,
+		interpolate_: function interpolate_(i1, t0, t, t1) {
+			var result = this.resultBuffer,
+					values = this.sampleValues,
+					stride = this.valueSize,
+					alpha = (t - t0) / (t1 - t0);
+			var offset = i1 * stride;
+
+			for (var end = offset + stride; offset !== end; offset += 4) {
+				Quaternion.slerpFlat(result, 0, values, offset - stride, values, offset, alpha);
+			}
+
+			return result;
+		}
+	});
+
+	/**
+	 * A Track of quaternion keyframe values.
+	 */
+
+	var QuaternionKeyframeTrack = /*#__PURE__*/function (_KeyframeTrack) {
+		_inheritsLoose(QuaternionKeyframeTrack, _KeyframeTrack);
+
+		function QuaternionKeyframeTrack() {
+			return _KeyframeTrack.apply(this, arguments) || this;
+		}
+
+		var _proto = QuaternionKeyframeTrack.prototype;
+
+		_proto.InterpolantFactoryMethodLinear = function InterpolantFactoryMethodLinear(result) {
+			return new QuaternionLinearInterpolant(this.times, this.values, this.getValueSize(), result);
+		};
+
+		return QuaternionKeyframeTrack;
+	}(KeyframeTrack);
+
+	QuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion'; // ValueBufferType is inherited
+
+	QuaternionKeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
+	QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;
+
+	/**
+	 * A Track that interpolates Strings
+	 */
+
+	var StringKeyframeTrack = /*#__PURE__*/function (_KeyframeTrack) {
+		_inheritsLoose(StringKeyframeTrack, _KeyframeTrack);
+
+		function StringKeyframeTrack() {
+			return _KeyframeTrack.apply(this, arguments) || this;
+		}
+
+		return StringKeyframeTrack;
+	}(KeyframeTrack);
+
+	StringKeyframeTrack.prototype.ValueTypeName = 'string';
+	StringKeyframeTrack.prototype.ValueBufferType = Array;
+	StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
+	StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
+	StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;
+
+	/**
+	 * A Track of vectored keyframe values.
+	 */
+
+	var VectorKeyframeTrack = /*#__PURE__*/function (_KeyframeTrack) {
+		_inheritsLoose(VectorKeyframeTrack, _KeyframeTrack);
+
+		function VectorKeyframeTrack() {
+			return _KeyframeTrack.apply(this, arguments) || this;
+		}
+
+		return VectorKeyframeTrack;
+	}(KeyframeTrack);
+
+	VectorKeyframeTrack.prototype.ValueTypeName = 'vector'; // ValueBufferType is inherited
+
+	var AnimationClip = /*#__PURE__*/function () {
+		function AnimationClip(name, duration, tracks, blendMode) {
+			if (duration === void 0) {
+				duration = -1;
+			}
+
+			if (blendMode === void 0) {
+				blendMode = NormalAnimationBlendMode;
+			}
+
+			this.name = name;
+			this.tracks = tracks;
+			this.duration = duration;
+			this.blendMode = blendMode;
+			this.uuid = MathUtils.generateUUID(); // this means it should figure out its duration by scanning the tracks
+
+			if (this.duration < 0) {
+				this.resetDuration();
+			}
+		}
+
+		AnimationClip.parse = function parse(json) {
+			var tracks = [],
+					jsonTracks = json.tracks,
+					frameTime = 1.0 / (json.fps || 1.0);
+
+			for (var i = 0, n = jsonTracks.length; i !== n; ++i) {
+				tracks.push(parseKeyframeTrack(jsonTracks[i]).scale(frameTime));
+			}
+
+			var clip = new this(json.name, json.duration, tracks, json.blendMode);
+			clip.uuid = json.uuid;
+			return clip;
+		};
+
+		AnimationClip.toJSON = function toJSON(clip) {
+			var tracks = [],
+					clipTracks = clip.tracks;
+			var json = {
+				'name': clip.name,
+				'duration': clip.duration,
+				'tracks': tracks,
+				'uuid': clip.uuid,
+				'blendMode': clip.blendMode
+			};
+
+			for (var i = 0, n = clipTracks.length; i !== n; ++i) {
+				tracks.push(KeyframeTrack.toJSON(clipTracks[i]));
+			}
+
+			return json;
+		};
+
+		AnimationClip.CreateFromMorphTargetSequence = function CreateFromMorphTargetSequence(name, morphTargetSequence, fps, noLoop) {
+			var numMorphTargets = morphTargetSequence.length;
+			var tracks = [];
+
+			for (var i = 0; i < numMorphTargets; i++) {
+				var times = [];
+				var values = [];
+				times.push((i + numMorphTargets - 1) % numMorphTargets, i, (i + 1) % numMorphTargets);
+				values.push(0, 1, 0);
+				var order = AnimationUtils.getKeyframeOrder(times);
+				times = AnimationUtils.sortedArray(times, 1, order);
+				values = AnimationUtils.sortedArray(values, 1, order); // if there is a key at the first frame, duplicate it as the
+				// last frame as well for perfect loop.
+
+				if (!noLoop && times[0] === 0) {
+					times.push(numMorphTargets);
+					values.push(values[0]);
+				}
+
+				tracks.push(new NumberKeyframeTrack('.morphTargetInfluences[' + morphTargetSequence[i].name + ']', times, values).scale(1.0 / fps));
+			}
+
+			return new this(name, -1, tracks);
+		};
+
+		AnimationClip.findByName = function findByName(objectOrClipArray, name) {
+			var clipArray = objectOrClipArray;
+
+			if (!Array.isArray(objectOrClipArray)) {
+				var o = objectOrClipArray;
+				clipArray = o.geometry && o.geometry.animations || o.animations;
+			}
+
+			for (var i = 0; i < clipArray.length; i++) {
+				if (clipArray[i].name === name) {
+					return clipArray[i];
+				}
+			}
+
+			return null;
+		};
+
+		AnimationClip.CreateClipsFromMorphTargetSequences = function CreateClipsFromMorphTargetSequences(morphTargets, fps, noLoop) {
+			var animationToMorphTargets = {}; // tested with https://regex101.com/ on trick sequences
+			// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
+
+			var pattern = /^([\w-]*?)([\d]+)$/; // sort morph target names into animation groups based
+			// patterns like Walk_001, Walk_002, Run_001, Run_002
+
+			for (var i = 0, il = morphTargets.length; i < il; i++) {
+				var morphTarget = morphTargets[i];
+				var parts = morphTarget.name.match(pattern);
+
+				if (parts && parts.length > 1) {
+					var name = parts[1];
+					var animationMorphTargets = animationToMorphTargets[name];
+
+					if (!animationMorphTargets) {
+						animationToMorphTargets[name] = animationMorphTargets = [];
+					}
+
+					animationMorphTargets.push(morphTarget);
+				}
+			}
+
+			var clips = [];
+
+			for (var _name in animationToMorphTargets) {
+				clips.push(this.CreateFromMorphTargetSequence(_name, animationToMorphTargets[_name], fps, noLoop));
+			}
+
+			return clips;
+		} // parse the animation.hierarchy format
+		;
+
+		AnimationClip.parseAnimation = function parseAnimation(animation, bones) {
+			if (!animation) {
+				console.error('THREE.AnimationClip: No animation in JSONLoader data.');
+				return null;
+			}
+
+			var addNonemptyTrack = function addNonemptyTrack(trackType, trackName, animationKeys, propertyName, destTracks) {
+				// only return track if there are actually keys.
+				if (animationKeys.length !== 0) {
+					var times = [];
+					var values = [];
+					AnimationUtils.flattenJSON(animationKeys, times, values, propertyName); // empty keys are filtered out, so check again
+
+					if (times.length !== 0) {
+						destTracks.push(new trackType(trackName, times, values));
+					}
+				}
+			};
+
+			var tracks = [];
+			var clipName = animation.name || 'default';
+			var fps = animation.fps || 30;
+			var blendMode = animation.blendMode; // automatic length determination in AnimationClip.
+
+			var duration = animation.length || -1;
+			var hierarchyTracks = animation.hierarchy || [];
+
+			for (var h = 0; h < hierarchyTracks.length; h++) {
+				var animationKeys = hierarchyTracks[h].keys; // skip empty tracks
+
+				if (!animationKeys || animationKeys.length === 0) continue; // process morph targets
+
+				if (animationKeys[0].morphTargets) {
+					// figure out all morph targets used in this track
+					var morphTargetNames = {};
+					var k = void 0;
+
+					for (k = 0; k < animationKeys.length; k++) {
+						if (animationKeys[k].morphTargets) {
+							for (var m = 0; m < animationKeys[k].morphTargets.length; m++) {
+								morphTargetNames[animationKeys[k].morphTargets[m]] = -1;
+							}
+						}
+					} // create a track for each morph target with all zero
+					// morphTargetInfluences except for the keys in which
+					// the morphTarget is named.
+
+
+					for (var morphTargetName in morphTargetNames) {
+						var times = [];
+						var values = [];
+
+						for (var _m = 0; _m !== animationKeys[k].morphTargets.length; ++_m) {
+							var animationKey = animationKeys[k];
+							times.push(animationKey.time);
+							values.push(animationKey.morphTarget === morphTargetName ? 1 : 0);
+						}
+
+						tracks.push(new NumberKeyframeTrack('.morphTargetInfluence[' + morphTargetName + ']', times, values));
+					}
+
+					duration = morphTargetNames.length * (fps || 1.0);
+				} else {
+					// ...assume skeletal animation
+					var boneName = '.bones[' + bones[h].name + ']';
+					addNonemptyTrack(VectorKeyframeTrack, boneName + '.position', animationKeys, 'pos', tracks);
+					addNonemptyTrack(QuaternionKeyframeTrack, boneName + '.quaternion', animationKeys, 'rot', tracks);
+					addNonemptyTrack(VectorKeyframeTrack, boneName + '.scale', animationKeys, 'scl', tracks);
+				}
+			}
+
+			if (tracks.length === 0) {
+				return null;
+			}
+
+			var clip = new this(clipName, duration, tracks, blendMode);
+			return clip;
+		};
+
+		var _proto = AnimationClip.prototype;
+
+		_proto.resetDuration = function resetDuration() {
+			var tracks = this.tracks;
+			var duration = 0;
+
+			for (var i = 0, n = tracks.length; i !== n; ++i) {
+				var track = this.tracks[i];
+				duration = Math.max(duration, track.times[track.times.length - 1]);
+			}
+
+			this.duration = duration;
+			return this;
+		};
+
+		_proto.trim = function trim() {
+			for (var i = 0; i < this.tracks.length; i++) {
+				this.tracks[i].trim(0, this.duration);
+			}
+
+			return this;
+		};
+
+		_proto.validate = function validate() {
+			var valid = true;
+
+			for (var i = 0; i < this.tracks.length; i++) {
+				valid = valid && this.tracks[i].validate();
+			}
+
+			return valid;
+		};
+
+		_proto.optimize = function optimize() {
+			for (var i = 0; i < this.tracks.length; i++) {
+				this.tracks[i].optimize();
+			}
+
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			var tracks = [];
+
+			for (var i = 0; i < this.tracks.length; i++) {
+				tracks.push(this.tracks[i].clone());
+			}
+
+			return new this.constructor(this.name, this.duration, tracks, this.blendMode);
+		};
+
+		_proto.toJSON = function toJSON() {
+			return this.constructor.toJSON(this);
+		};
+
+		return AnimationClip;
+	}();
+
+	function getTrackTypeForValueTypeName(typeName) {
+		switch (typeName.toLowerCase()) {
+			case 'scalar':
+			case 'double':
+			case 'float':
+			case 'number':
+			case 'integer':
+				return NumberKeyframeTrack;
+
+			case 'vector':
+			case 'vector2':
+			case 'vector3':
+			case 'vector4':
+				return VectorKeyframeTrack;
+
+			case 'color':
+				return ColorKeyframeTrack;
+
+			case 'quaternion':
+				return QuaternionKeyframeTrack;
+
+			case 'bool':
+			case 'boolean':
+				return BooleanKeyframeTrack;
+
+			case 'string':
+				return StringKeyframeTrack;
+		}
+
+		throw new Error('THREE.KeyframeTrack: Unsupported typeName: ' + typeName);
+	}
+
+	function parseKeyframeTrack(json) {
+		if (json.type === undefined) {
+			throw new Error('THREE.KeyframeTrack: track type undefined, can not parse');
+		}
+
+		var trackType = getTrackTypeForValueTypeName(json.type);
+
+		if (json.times === undefined) {
+			var times = [],
+					values = [];
+			AnimationUtils.flattenJSON(json.keys, times, values, 'value');
+			json.times = times;
+			json.values = values;
+		} // derived classes can define a static parse method
+
+
+		if (trackType.parse !== undefined) {
+			return trackType.parse(json);
+		} else {
+			// by default, we assume a constructor compatible with the base
+			return new trackType(json.name, json.times, json.values, json.interpolation);
+		}
+	}
+
+	var Cache = {
+		enabled: false,
+		files: {},
+		add: function add(key, file) {
+			if (this.enabled === false) return; // console.log( 'THREE.Cache', 'Adding key:', key );
+
+			this.files[key] = file;
+		},
+		get: function get(key) {
+			if (this.enabled === false) return; // console.log( 'THREE.Cache', 'Checking key:', key );
+
+			return this.files[key];
+		},
+		remove: function remove(key) {
+			delete this.files[key];
+		},
+		clear: function clear() {
+			this.files = {};
+		}
+	};
+
+	function LoadingManager(onLoad, onProgress, onError) {
+		var scope = this;
+		var isLoading = false;
+		var itemsLoaded = 0;
+		var itemsTotal = 0;
+		var urlModifier = undefined;
+		var handlers = []; // Refer to #5689 for the reason why we don't set .onStart
+		// in the constructor
+
+		this.onStart = undefined;
+		this.onLoad = onLoad;
+		this.onProgress = onProgress;
+		this.onError = onError;
+
+		this.itemStart = function (url) {
+			itemsTotal++;
+
+			if (isLoading === false) {
+				if (scope.onStart !== undefined) {
+					scope.onStart(url, itemsLoaded, itemsTotal);
+				}
+			}
+
+			isLoading = true;
+		};
+
+		this.itemEnd = function (url) {
+			itemsLoaded++;
+
+			if (scope.onProgress !== undefined) {
+				scope.onProgress(url, itemsLoaded, itemsTotal);
+			}
+
+			if (itemsLoaded === itemsTotal) {
+				isLoading = false;
+
+				if (scope.onLoad !== undefined) {
+					scope.onLoad();
+				}
+			}
+		};
+
+		this.itemError = function (url) {
+			if (scope.onError !== undefined) {
+				scope.onError(url);
+			}
+		};
+
+		this.resolveURL = function (url) {
+			if (urlModifier) {
+				return urlModifier(url);
+			}
+
+			return url;
+		};
+
+		this.setURLModifier = function (transform) {
+			urlModifier = transform;
+			return this;
+		};
+
+		this.addHandler = function (regex, loader) {
+			handlers.push(regex, loader);
+			return this;
+		};
+
+		this.removeHandler = function (regex) {
+			var index = handlers.indexOf(regex);
+
+			if (index !== -1) {
+				handlers.splice(index, 2);
+			}
+
+			return this;
+		};
+
+		this.getHandler = function (file) {
+			for (var i = 0, l = handlers.length; i < l; i += 2) {
+				var regex = handlers[i];
+				var loader = handlers[i + 1];
+				if (regex.global) regex.lastIndex = 0; // see #17920
+
+				if (regex.test(file)) {
+					return loader;
+				}
+			}
+
+			return null;
+		};
+	}
+
+	var DefaultLoadingManager = new LoadingManager();
+
+	function Loader(manager) {
+		this.manager = manager !== undefined ? manager : DefaultLoadingManager;
+		this.crossOrigin = 'anonymous';
+		this.withCredentials = false;
+		this.path = '';
+		this.resourcePath = '';
+		this.requestHeader = {};
+	}
+
+	Object.assign(Loader.prototype, {
+		load: function load()
+		/* url, onLoad, onProgress, onError */
+		{},
+		loadAsync: function loadAsync(url, onProgress) {
+			var scope = this;
+			return new Promise(function (resolve, reject) {
+				scope.load(url, resolve, onProgress, reject);
+			});
+		},
+		parse: function parse()
+		/* data */
+		{},
+		setCrossOrigin: function setCrossOrigin(crossOrigin) {
+			this.crossOrigin = crossOrigin;
+			return this;
+		},
+		setWithCredentials: function setWithCredentials(value) {
+			this.withCredentials = value;
+			return this;
+		},
+		setPath: function setPath(path) {
+			this.path = path;
+			return this;
+		},
+		setResourcePath: function setResourcePath(resourcePath) {
+			this.resourcePath = resourcePath;
+			return this;
+		},
+		setRequestHeader: function setRequestHeader(requestHeader) {
+			this.requestHeader = requestHeader;
+			return this;
+		}
+	});
+
+	var loading = {};
+
+	function FileLoader(manager) {
+		Loader.call(this, manager);
+	}
+
+	FileLoader.prototype = Object.assign(Object.create(Loader.prototype), {
+		constructor: FileLoader,
+		load: function load(url, onLoad, onProgress, onError) {
+			if (url === undefined) url = '';
+			if (this.path !== undefined) url = this.path + url;
+			url = this.manager.resolveURL(url);
+			var scope = this;
+			var cached = Cache.get(url);
+
+			if (cached !== undefined) {
+				scope.manager.itemStart(url);
+				setTimeout(function () {
+					if (onLoad) onLoad(cached);
+					scope.manager.itemEnd(url);
+				}, 0);
+				return cached;
+			} // Check if request is duplicate
+
+
+			if (loading[url] !== undefined) {
+				loading[url].push({
+					onLoad: onLoad,
+					onProgress: onProgress,
+					onError: onError
+				});
+				return;
+			} // Check for data: URI
+
+
+			var dataUriRegex = /^data:(.*?)(;base64)?,(.*)$/;
+			var dataUriRegexResult = url.match(dataUriRegex);
+			var request; // Safari can not handle Data URIs through XMLHttpRequest so process manually
+
+			if (dataUriRegexResult) {
+				var mimeType = dataUriRegexResult[1];
+				var isBase64 = !!dataUriRegexResult[2];
+				var data = dataUriRegexResult[3];
+				data = decodeURIComponent(data);
+				if (isBase64) data = atob(data);
+
+				try {
+					var response;
+					var responseType = (this.responseType || '').toLowerCase();
+
+					switch (responseType) {
+						case 'arraybuffer':
+						case 'blob':
+							var view = new Uint8Array(data.length);
+
+							for (var i = 0; i < data.length; i++) {
+								view[i] = data.charCodeAt(i);
+							}
+
+							if (responseType === 'blob') {
+								response = new Blob([view.buffer], {
+									type: mimeType
+								});
+							} else {
+								response = view.buffer;
+							}
+
+							break;
+
+						case 'document':
+							var parser = new DOMParser();
+							response = parser.parseFromString(data, mimeType);
+							break;
+
+						case 'json':
+							response = JSON.parse(data);
+							break;
+
+						default:
+							// 'text' or other
+							response = data;
+							break;
+					} // Wait for next browser tick like standard XMLHttpRequest event dispatching does
+
+
+					setTimeout(function () {
+						if (onLoad) onLoad(response);
+						scope.manager.itemEnd(url);
+					}, 0);
+				} catch (error) {
+					// Wait for next browser tick like standard XMLHttpRequest event dispatching does
+					setTimeout(function () {
+						if (onError) onError(error);
+						scope.manager.itemError(url);
+						scope.manager.itemEnd(url);
+					}, 0);
+				}
+			} else {
+				// Initialise array for duplicate requests
+				loading[url] = [];
+				loading[url].push({
+					onLoad: onLoad,
+					onProgress: onProgress,
+					onError: onError
+				});
+				request = new XMLHttpRequest();
+				request.open('GET', url, true);
+				request.addEventListener('load', function (event) {
+					var response = this.response;
+					var callbacks = loading[url];
+					delete loading[url];
+
+					if (this.status === 200 || this.status === 0) {
+						// Some browsers return HTTP Status 0 when using non-http protocol
+						// e.g. 'file://' or 'data://'. Handle as success.
+						if (this.status === 0) console.warn('THREE.FileLoader: HTTP Status 0 received.'); // Add to cache only on HTTP success, so that we do not cache
+						// error response bodies as proper responses to requests.
+
+						Cache.add(url, response);
+
+						for (var _i = 0, il = callbacks.length; _i < il; _i++) {
+							var callback = callbacks[_i];
+							if (callback.onLoad) callback.onLoad(response);
+						}
+
+						scope.manager.itemEnd(url);
+					} else {
+						for (var _i2 = 0, _il = callbacks.length; _i2 < _il; _i2++) {
+							var _callback = callbacks[_i2];
+							if (_callback.onError) _callback.onError(event);
+						}
+
+						scope.manager.itemError(url);
+						scope.manager.itemEnd(url);
+					}
+				}, false);
+				request.addEventListener('progress', function (event) {
+					var callbacks = loading[url];
+
+					for (var _i3 = 0, il = callbacks.length; _i3 < il; _i3++) {
+						var callback = callbacks[_i3];
+						if (callback.onProgress) callback.onProgress(event);
+					}
+				}, false);
+				request.addEventListener('error', function (event) {
+					var callbacks = loading[url];
+					delete loading[url];
+
+					for (var _i4 = 0, il = callbacks.length; _i4 < il; _i4++) {
+						var callback = callbacks[_i4];
+						if (callback.onError) callback.onError(event);
+					}
+
+					scope.manager.itemError(url);
+					scope.manager.itemEnd(url);
+				}, false);
+				request.addEventListener('abort', function (event) {
+					var callbacks = loading[url];
+					delete loading[url];
+
+					for (var _i5 = 0, il = callbacks.length; _i5 < il; _i5++) {
+						var callback = callbacks[_i5];
+						if (callback.onError) callback.onError(event);
+					}
+
+					scope.manager.itemError(url);
+					scope.manager.itemEnd(url);
+				}, false);
+				if (this.responseType !== undefined) request.responseType = this.responseType;
+				if (this.withCredentials !== undefined) request.withCredentials = this.withCredentials;
+				if (request.overrideMimeType) request.overrideMimeType(this.mimeType !== undefined ? this.mimeType : 'text/plain');
+
+				for (var header in this.requestHeader) {
+					request.setRequestHeader(header, this.requestHeader[header]);
+				}
+
+				request.send(null);
+			}
+
+			scope.manager.itemStart(url);
+			return request;
+		},
+		setResponseType: function setResponseType(value) {
+			this.responseType = value;
+			return this;
+		},
+		setMimeType: function setMimeType(value) {
+			this.mimeType = value;
+			return this;
+		}
+	});
+
+	var AnimationLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(AnimationLoader, _Loader);
+
+		function AnimationLoader(manager) {
+			return _Loader.call(this, manager) || this;
+		}
+
+		var _proto = AnimationLoader.prototype;
+
+		_proto.load = function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(this.withCredentials);
+			loader.load(url, function (text) {
+				try {
+					onLoad(scope.parse(JSON.parse(text)));
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
+
+					scope.manager.itemError(url);
+				}
+			}, onProgress, onError);
+		};
+
+		_proto.parse = function parse(json) {
+			var animations = [];
+
+			for (var i = 0; i < json.length; i++) {
+				var clip = AnimationClip.parse(json[i]);
+				animations.push(clip);
+			}
+
+			return animations;
+		};
+
+		return AnimationLoader;
+	}(Loader);
+
+	/**
+	 * Abstract Base class to block based textures loader (dds, pvr, ...)
+	 *
+	 * Sub classes have to implement the parse() method which will be used in load().
+	 */
+
+	function CompressedTextureLoader(manager) {
+		Loader.call(this, manager);
+	}
+
+	CompressedTextureLoader.prototype = Object.assign(Object.create(Loader.prototype), {
+		constructor: CompressedTextureLoader,
+		load: function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var images = [];
+			var texture = new CompressedTexture();
+			var loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setResponseType('arraybuffer');
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			var loaded = 0;
+
+			function loadTexture(i) {
+				loader.load(url[i], function (buffer) {
+					var texDatas = scope.parse(buffer, true);
+					images[i] = {
+						width: texDatas.width,
+						height: texDatas.height,
+						format: texDatas.format,
+						mipmaps: texDatas.mipmaps
+					};
+					loaded += 1;
+
+					if (loaded === 6) {
+						if (texDatas.mipmapCount === 1) texture.minFilter = LinearFilter;
+						texture.image = images;
+						texture.format = texDatas.format;
+						texture.needsUpdate = true;
+						if (onLoad) onLoad(texture);
+					}
+				}, onProgress, onError);
+			}
+
+			if (Array.isArray(url)) {
+				for (var i = 0, il = url.length; i < il; ++i) {
+					loadTexture(i);
+				}
+			} else {
+				// compressed cubemap texture stored in a single DDS file
+				loader.load(url, function (buffer) {
+					var texDatas = scope.parse(buffer, true);
+
+					if (texDatas.isCubemap) {
+						var faces = texDatas.mipmaps.length / texDatas.mipmapCount;
+
+						for (var f = 0; f < faces; f++) {
+							images[f] = {
+								mipmaps: []
+							};
+
+							for (var _i = 0; _i < texDatas.mipmapCount; _i++) {
+								images[f].mipmaps.push(texDatas.mipmaps[f * texDatas.mipmapCount + _i]);
+								images[f].format = texDatas.format;
+								images[f].width = texDatas.width;
+								images[f].height = texDatas.height;
+							}
+						}
+
+						texture.image = images;
+					} else {
+						texture.image.width = texDatas.width;
+						texture.image.height = texDatas.height;
+						texture.mipmaps = texDatas.mipmaps;
+					}
+
+					if (texDatas.mipmapCount === 1) {
+						texture.minFilter = LinearFilter;
+					}
+
+					texture.format = texDatas.format;
+					texture.needsUpdate = true;
+					if (onLoad) onLoad(texture);
+				}, onProgress, onError);
+			}
+
+			return texture;
+		}
+	});
+
+	var ImageLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(ImageLoader, _Loader);
+
+		function ImageLoader(manager) {
+			return _Loader.call(this, manager) || this;
+		}
+
+		var _proto = ImageLoader.prototype;
+
+		_proto.load = function load(url, onLoad, onProgress, onError) {
+			if (this.path !== undefined) url = this.path + url;
+			url = this.manager.resolveURL(url);
+			var scope = this;
+			var cached = Cache.get(url);
+
+			if (cached !== undefined) {
+				scope.manager.itemStart(url);
+				setTimeout(function () {
+					if (onLoad) onLoad(cached);
+					scope.manager.itemEnd(url);
+				}, 0);
+				return cached;
+			}
+
+			var image = document.createElementNS('http://www.w3.org/1999/xhtml', 'img');
+
+			function onImageLoad() {
+				image.removeEventListener('load', onImageLoad, false);
+				image.removeEventListener('error', onImageError, false);
+				Cache.add(url, this);
+				if (onLoad) onLoad(this);
+				scope.manager.itemEnd(url);
+			}
+
+			function onImageError(event) {
+				image.removeEventListener('load', onImageLoad, false);
+				image.removeEventListener('error', onImageError, false);
+				if (onError) onError(event);
+				scope.manager.itemError(url);
+				scope.manager.itemEnd(url);
+			}
+
+			image.addEventListener('load', onImageLoad, false);
+			image.addEventListener('error', onImageError, false);
+
+			if (url.substr(0, 5) !== 'data:') {
+				if (this.crossOrigin !== undefined) image.crossOrigin = this.crossOrigin;
+			}
+
+			scope.manager.itemStart(url);
+			image.src = url;
+			return image;
+		};
+
+		return ImageLoader;
+	}(Loader);
+
+	var CubeTextureLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(CubeTextureLoader, _Loader);
+
+		function CubeTextureLoader(manager) {
+			return _Loader.call(this, manager) || this;
+		}
+
+		var _proto = CubeTextureLoader.prototype;
+
+		_proto.load = function load(urls, onLoad, onProgress, onError) {
+			var texture = new CubeTexture();
+			var loader = new ImageLoader(this.manager);
+			loader.setCrossOrigin(this.crossOrigin);
+			loader.setPath(this.path);
+			var loaded = 0;
+
+			function loadTexture(i) {
+				loader.load(urls[i], function (image) {
+					texture.images[i] = image;
+					loaded++;
+
+					if (loaded === 6) {
+						texture.needsUpdate = true;
+						if (onLoad) onLoad(texture);
+					}
+				}, undefined, onError);
+			}
+
+			for (var i = 0; i < urls.length; ++i) {
+				loadTexture(i);
+			}
+
+			return texture;
+		};
+
+		return CubeTextureLoader;
+	}(Loader);
+
+	/**
+	 * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
+	 *
+	 * Sub classes have to implement the parse() method which will be used in load().
+	 */
+
+	function DataTextureLoader(manager) {
+		Loader.call(this, manager);
+	}
+
+	DataTextureLoader.prototype = Object.assign(Object.create(Loader.prototype), {
+		constructor: DataTextureLoader,
+		load: function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var texture = new DataTexture();
+			var loader = new FileLoader(this.manager);
+			loader.setResponseType('arraybuffer');
+			loader.setRequestHeader(this.requestHeader);
+			loader.setPath(this.path);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (buffer) {
+				var texData = scope.parse(buffer);
+				if (!texData) return;
+
+				if (texData.image !== undefined) {
+					texture.image = texData.image;
+				} else if (texData.data !== undefined) {
+					texture.image.width = texData.width;
+					texture.image.height = texData.height;
+					texture.image.data = texData.data;
+				}
+
+				texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
+				texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;
+				texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
+				texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;
+				texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;
+
+				if (texData.encoding !== undefined) {
+					texture.encoding = texData.encoding;
+				}
+
+				if (texData.flipY !== undefined) {
+					texture.flipY = texData.flipY;
+				}
+
+				if (texData.format !== undefined) {
+					texture.format = texData.format;
+				}
+
+				if (texData.type !== undefined) {
+					texture.type = texData.type;
+				}
+
+				if (texData.mipmaps !== undefined) {
+					texture.mipmaps = texData.mipmaps;
+					texture.minFilter = LinearMipmapLinearFilter; // presumably...
+				}
+
+				if (texData.mipmapCount === 1) {
+					texture.minFilter = LinearFilter;
+				}
+
+				texture.needsUpdate = true;
+				if (onLoad) onLoad(texture, texData);
+			}, onProgress, onError);
+			return texture;
+		}
+	});
+
+	function TextureLoader(manager) {
+		Loader.call(this, manager);
+	}
+
+	TextureLoader.prototype = Object.assign(Object.create(Loader.prototype), {
+		constructor: TextureLoader,
+		load: function load(url, onLoad, onProgress, onError) {
+			var texture = new Texture();
+			var loader = new ImageLoader(this.manager);
+			loader.setCrossOrigin(this.crossOrigin);
+			loader.setPath(this.path);
+			loader.load(url, function (image) {
+				texture.image = image; // JPEGs can't have an alpha channel, so memory can be saved by storing them as RGB.
+
+				var isJPEG = url.search(/\.jpe?g($|\?)/i) > 0 || url.search(/^data\:image\/jpeg/) === 0;
+				texture.format = isJPEG ? RGBFormat : RGBAFormat;
+				texture.needsUpdate = true;
+
+				if (onLoad !== undefined) {
+					onLoad(texture);
+				}
+			}, onProgress, onError);
+			return texture;
+		}
+	});
+
+	/**
+	 * Extensible curve object.
+	 *
+	 * Some common of curve methods:
+	 * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )
+	 * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )
+	 * .getPoints(), .getSpacedPoints()
+	 * .getLength()
+	 * .updateArcLengths()
+	 *
+	 * This following curves inherit from THREE.Curve:
+	 *
+	 * -- 2D curves --
+	 * THREE.ArcCurve
+	 * THREE.CubicBezierCurve
+	 * THREE.EllipseCurve
+	 * THREE.LineCurve
+	 * THREE.QuadraticBezierCurve
+	 * THREE.SplineCurve
+	 *
+	 * -- 3D curves --
+	 * THREE.CatmullRomCurve3
+	 * THREE.CubicBezierCurve3
+	 * THREE.LineCurve3
+	 * THREE.QuadraticBezierCurve3
+	 *
+	 * A series of curves can be represented as a THREE.CurvePath.
+	 *
+	 **/
+
+	function Curve() {
+		this.type = 'Curve';
+		this.arcLengthDivisions = 200;
+	}
+
+	Object.assign(Curve.prototype, {
+		// Virtual base class method to overwrite and implement in subclasses
+		//	- t [0 .. 1]
+		getPoint: function getPoint()
+		/* t, optionalTarget */
+		{
+			console.warn('THREE.Curve: .getPoint() not implemented.');
+			return null;
+		},
+		// Get point at relative position in curve according to arc length
+		// - u [0 .. 1]
+		getPointAt: function getPointAt(u, optionalTarget) {
+			var t = this.getUtoTmapping(u);
+			return this.getPoint(t, optionalTarget);
+		},
+		// Get sequence of points using getPoint( t )
+		getPoints: function getPoints(divisions) {
+			if (divisions === void 0) {
+				divisions = 5;
+			}
+
+			var points = [];
+
+			for (var d = 0; d <= divisions; d++) {
+				points.push(this.getPoint(d / divisions));
+			}
+
+			return points;
+		},
+		// Get sequence of points using getPointAt( u )
+		getSpacedPoints: function getSpacedPoints(divisions) {
+			if (divisions === void 0) {
+				divisions = 5;
+			}
+
+			var points = [];
+
+			for (var d = 0; d <= divisions; d++) {
+				points.push(this.getPointAt(d / divisions));
+			}
+
+			return points;
+		},
+		// Get total curve arc length
+		getLength: function getLength() {
+			var lengths = this.getLengths();
+			return lengths[lengths.length - 1];
+		},
+		// Get list of cumulative segment lengths
+		getLengths: function getLengths(divisions) {
+			if (divisions === undefined) divisions = this.arcLengthDivisions;
+
+			if (this.cacheArcLengths && this.cacheArcLengths.length === divisions + 1 && !this.needsUpdate) {
+				return this.cacheArcLengths;
+			}
+
+			this.needsUpdate = false;
+			var cache = [];
+			var current,
+					last = this.getPoint(0);
+			var sum = 0;
+			cache.push(0);
+
+			for (var p = 1; p <= divisions; p++) {
+				current = this.getPoint(p / divisions);
+				sum += current.distanceTo(last);
+				cache.push(sum);
+				last = current;
+			}
+
+			this.cacheArcLengths = cache;
+			return cache; // { sums: cache, sum: sum }; Sum is in the last element.
+		},
+		updateArcLengths: function updateArcLengths() {
+			this.needsUpdate = true;
+			this.getLengths();
+		},
+		// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant
+		getUtoTmapping: function getUtoTmapping(u, distance) {
+			var arcLengths = this.getLengths();
+			var i = 0;
+			var il = arcLengths.length;
+			var targetArcLength; // The targeted u distance value to get
+
+			if (distance) {
+				targetArcLength = distance;
+			} else {
+				targetArcLength = u * arcLengths[il - 1];
+			} // binary search for the index with largest value smaller than target u distance
+
+
+			var low = 0,
+					high = il - 1,
+					comparison;
+
+			while (low <= high) {
+				i = Math.floor(low + (high - low) / 2); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats
+
+				comparison = arcLengths[i] - targetArcLength;
+
+				if (comparison < 0) {
+					low = i + 1;
+				} else if (comparison > 0) {
+					high = i - 1;
+				} else {
+					high = i;
+					break; // DONE
+				}
+			}
+
+			i = high;
+
+			if (arcLengths[i] === targetArcLength) {
+				return i / (il - 1);
+			} // we could get finer grain at lengths, or use simple interpolation between two points
+
+
+			var lengthBefore = arcLengths[i];
+			var lengthAfter = arcLengths[i + 1];
+			var segmentLength = lengthAfter - lengthBefore; // determine where we are between the 'before' and 'after' points
+
+			var segmentFraction = (targetArcLength - lengthBefore) / segmentLength; // add that fractional amount to t
+
+			var t = (i + segmentFraction) / (il - 1);
+			return t;
+		},
+		// Returns a unit vector tangent at t
+		// In case any sub curve does not implement its tangent derivation,
+		// 2 points a small delta apart will be used to find its gradient
+		// which seems to give a reasonable approximation
+		getTangent: function getTangent(t, optionalTarget) {
+			var delta = 0.0001;
+			var t1 = t - delta;
+			var t2 = t + delta; // Capping in case of danger
+
+			if (t1 < 0) t1 = 0;
+			if (t2 > 1) t2 = 1;
+			var pt1 = this.getPoint(t1);
+			var pt2 = this.getPoint(t2);
+			var tangent = optionalTarget || (pt1.isVector2 ? new Vector2() : new Vector3());
+			tangent.copy(pt2).sub(pt1).normalize();
+			return tangent;
+		},
+		getTangentAt: function getTangentAt(u, optionalTarget) {
+			var t = this.getUtoTmapping(u);
+			return this.getTangent(t, optionalTarget);
+		},
+		computeFrenetFrames: function computeFrenetFrames(segments, closed) {
+			// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf
+			var normal = new Vector3();
+			var tangents = [];
+			var normals = [];
+			var binormals = [];
+			var vec = new Vector3();
+			var mat = new Matrix4(); // compute the tangent vectors for each segment on the curve
+
+			for (var i = 0; i <= segments; i++) {
+				var u = i / segments;
+				tangents[i] = this.getTangentAt(u, new Vector3());
+				tangents[i].normalize();
+			} // select an initial normal vector perpendicular to the first tangent vector,
+			// and in the direction of the minimum tangent xyz component
+
+
+			normals[0] = new Vector3();
+			binormals[0] = new Vector3();
+			var min = Number.MAX_VALUE;
+			var tx = Math.abs(tangents[0].x);
+			var ty = Math.abs(tangents[0].y);
+			var tz = Math.abs(tangents[0].z);
+
+			if (tx <= min) {
+				min = tx;
+				normal.set(1, 0, 0);
+			}
+
+			if (ty <= min) {
+				min = ty;
+				normal.set(0, 1, 0);
+			}
+
+			if (tz <= min) {
+				normal.set(0, 0, 1);
+			}
+
+			vec.crossVectors(tangents[0], normal).normalize();
+			normals[0].crossVectors(tangents[0], vec);
+			binormals[0].crossVectors(tangents[0], normals[0]); // compute the slowly-varying normal and binormal vectors for each segment on the curve
+
+			for (var _i = 1; _i <= segments; _i++) {
+				normals[_i] = normals[_i - 1].clone();
+				binormals[_i] = binormals[_i - 1].clone();
+				vec.crossVectors(tangents[_i - 1], tangents[_i]);
+
+				if (vec.length() > Number.EPSILON) {
+					vec.normalize();
+					var theta = Math.acos(MathUtils.clamp(tangents[_i - 1].dot(tangents[_i]), -1, 1)); // clamp for floating pt errors
+
+					normals[_i].applyMatrix4(mat.makeRotationAxis(vec, theta));
+				}
+
+				binormals[_i].crossVectors(tangents[_i], normals[_i]);
+			} // if the curve is closed, postprocess the vectors so the first and last normal vectors are the same
+
+
+			if (closed === true) {
+				var _theta = Math.acos(MathUtils.clamp(normals[0].dot(normals[segments]), -1, 1));
+
+				_theta /= segments;
+
+				if (tangents[0].dot(vec.crossVectors(normals[0], normals[segments])) > 0) {
+					_theta = -_theta;
+				}
+
+				for (var _i2 = 1; _i2 <= segments; _i2++) {
+					// twist a little...
+					normals[_i2].applyMatrix4(mat.makeRotationAxis(tangents[_i2], _theta * _i2));
+
+					binormals[_i2].crossVectors(tangents[_i2], normals[_i2]);
+				}
+			}
+
+			return {
+				tangents: tangents,
+				normals: normals,
+				binormals: binormals
+			};
+		},
+		clone: function clone() {
+			return new this.constructor().copy(this);
+		},
+		copy: function copy(source) {
+			this.arcLengthDivisions = source.arcLengthDivisions;
+			return this;
+		},
+		toJSON: function toJSON() {
+			var data = {
+				metadata: {
+					version: 4.5,
+					type: 'Curve',
+					generator: 'Curve.toJSON'
+				}
+			};
+			data.arcLengthDivisions = this.arcLengthDivisions;
+			data.type = this.type;
+			return data;
+		},
+		fromJSON: function fromJSON(json) {
+			this.arcLengthDivisions = json.arcLengthDivisions;
+			return this;
+		}
+	});
+
+	var EllipseCurve = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(EllipseCurve, _Curve);
+
+		function EllipseCurve(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
+			var _this;
+
+			if (aX === void 0) {
+				aX = 0;
+			}
+
+			if (aY === void 0) {
+				aY = 0;
+			}
+
+			if (xRadius === void 0) {
+				xRadius = 1;
+			}
+
+			if (yRadius === void 0) {
+				yRadius = 1;
+			}
+
+			if (aStartAngle === void 0) {
+				aStartAngle = 0;
+			}
+
+			if (aEndAngle === void 0) {
+				aEndAngle = Math.PI * 2;
+			}
+
+			if (aClockwise === void 0) {
+				aClockwise = false;
+			}
+
+			if (aRotation === void 0) {
+				aRotation = 0;
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'EllipseCurve';
+			_this.aX = aX;
+			_this.aY = aY;
+			_this.xRadius = xRadius;
+			_this.yRadius = yRadius;
+			_this.aStartAngle = aStartAngle;
+			_this.aEndAngle = aEndAngle;
+			_this.aClockwise = aClockwise;
+			_this.aRotation = aRotation;
+			return _this;
+		}
+
+		var _proto = EllipseCurve.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			var point = optionalTarget || new Vector2();
+			var twoPi = Math.PI * 2;
+			var deltaAngle = this.aEndAngle - this.aStartAngle;
+			var samePoints = Math.abs(deltaAngle) < Number.EPSILON; // ensures that deltaAngle is 0 .. 2 PI
+
+			while (deltaAngle < 0) {
+				deltaAngle += twoPi;
+			}
+
+			while (deltaAngle > twoPi) {
+				deltaAngle -= twoPi;
+			}
+
+			if (deltaAngle < Number.EPSILON) {
+				if (samePoints) {
+					deltaAngle = 0;
+				} else {
+					deltaAngle = twoPi;
+				}
+			}
+
+			if (this.aClockwise === true && !samePoints) {
+				if (deltaAngle === twoPi) {
+					deltaAngle = -twoPi;
+				} else {
+					deltaAngle = deltaAngle - twoPi;
+				}
+			}
+
+			var angle = this.aStartAngle + t * deltaAngle;
+			var x = this.aX + this.xRadius * Math.cos(angle);
+			var y = this.aY + this.yRadius * Math.sin(angle);
+
+			if (this.aRotation !== 0) {
+				var cos = Math.cos(this.aRotation);
+				var sin = Math.sin(this.aRotation);
+				var tx = x - this.aX;
+				var ty = y - this.aY; // Rotate the point about the center of the ellipse.
+
+				x = tx * cos - ty * sin + this.aX;
+				y = tx * sin + ty * cos + this.aY;
+			}
+
+			return point.set(x, y);
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.aX = source.aX;
+			this.aY = source.aY;
+			this.xRadius = source.xRadius;
+			this.yRadius = source.yRadius;
+			this.aStartAngle = source.aStartAngle;
+			this.aEndAngle = source.aEndAngle;
+			this.aClockwise = source.aClockwise;
+			this.aRotation = source.aRotation;
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.aX = this.aX;
+			data.aY = this.aY;
+			data.xRadius = this.xRadius;
+			data.yRadius = this.yRadius;
+			data.aStartAngle = this.aStartAngle;
+			data.aEndAngle = this.aEndAngle;
+			data.aClockwise = this.aClockwise;
+			data.aRotation = this.aRotation;
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.aX = json.aX;
+			this.aY = json.aY;
+			this.xRadius = json.xRadius;
+			this.yRadius = json.yRadius;
+			this.aStartAngle = json.aStartAngle;
+			this.aEndAngle = json.aEndAngle;
+			this.aClockwise = json.aClockwise;
+			this.aRotation = json.aRotation;
+			return this;
+		};
+
+		return EllipseCurve;
+	}(Curve);
+
+	EllipseCurve.prototype.isEllipseCurve = true;
+
+	var ArcCurve = /*#__PURE__*/function (_EllipseCurve) {
+		_inheritsLoose(ArcCurve, _EllipseCurve);
+
+		function ArcCurve(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
+			var _this;
+
+			_this = _EllipseCurve.call(this, aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise) || this;
+			_this.type = 'ArcCurve';
+			return _this;
+		}
+
+		return ArcCurve;
+	}(EllipseCurve);
+
+	ArcCurve.prototype.isArcCurve = true;
+
+	/**
+	 * Centripetal CatmullRom Curve - which is useful for avoiding
+	 * cusps and self-intersections in non-uniform catmull rom curves.
+	 * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
+	 *
+	 * curve.type accepts centripetal(default), chordal and catmullrom
+	 * curve.tension is used for catmullrom which defaults to 0.5
+	 */
+
+	/*
+	Based on an optimized c++ solution in
+	 - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
+	 - http://ideone.com/NoEbVM
+
+	This CubicPoly class could be used for reusing some variables and calculations,
+	but for three.js curve use, it could be possible inlined and flatten into a single function call
+	which can be placed in CurveUtils.
+	*/
+
+	function CubicPoly() {
+		var c0 = 0,
+				c1 = 0,
+				c2 = 0,
+				c3 = 0;
+		/*
+		 * Compute coefficients for a cubic polynomial
+		 *	 p(s) = c0 + c1*s + c2*s^2 + c3*s^3
+		 * such that
+		 *	 p(0) = x0, p(1) = x1
+		 *	and
+		 *	 p'(0) = t0, p'(1) = t1.
+		 */
+
+		function init(x0, x1, t0, t1) {
+			c0 = x0;
+			c1 = t0;
+			c2 = -3 * x0 + 3 * x1 - 2 * t0 - t1;
+			c3 = 2 * x0 - 2 * x1 + t0 + t1;
+		}
+
+		return {
+			initCatmullRom: function initCatmullRom(x0, x1, x2, x3, tension) {
+				init(x1, x2, tension * (x2 - x0), tension * (x3 - x1));
+			},
+			initNonuniformCatmullRom: function initNonuniformCatmullRom(x0, x1, x2, x3, dt0, dt1, dt2) {
+				// compute tangents when parameterized in [t1,t2]
+				var t1 = (x1 - x0) / dt0 - (x2 - x0) / (dt0 + dt1) + (x2 - x1) / dt1;
+				var t2 = (x2 - x1) / dt1 - (x3 - x1) / (dt1 + dt2) + (x3 - x2) / dt2; // rescale tangents for parametrization in [0,1]
+
+				t1 *= dt1;
+				t2 *= dt1;
+				init(x1, x2, t1, t2);
+			},
+			calc: function calc(t) {
+				var t2 = t * t;
+				var t3 = t2 * t;
+				return c0 + c1 * t + c2 * t2 + c3 * t3;
+			}
+		};
+	} //
+
+
+	var tmp = new Vector3();
+	var px = new CubicPoly(),
+			py = new CubicPoly(),
+			pz = new CubicPoly();
+
+	var CatmullRomCurve3 = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(CatmullRomCurve3, _Curve);
+
+		function CatmullRomCurve3(points, closed, curveType, tension) {
+			var _this;
+
+			if (points === void 0) {
+				points = [];
+			}
+
+			if (closed === void 0) {
+				closed = false;
+			}
+
+			if (curveType === void 0) {
+				curveType = 'centripetal';
+			}
+
+			if (tension === void 0) {
+				tension = 0.5;
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'CatmullRomCurve3';
+			_this.points = points;
+			_this.closed = closed;
+			_this.curveType = curveType;
+			_this.tension = tension;
+			return _this;
+		}
+
+		var _proto = CatmullRomCurve3.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector3();
+			}
+
+			var point = optionalTarget;
+			var points = this.points;
+			var l = points.length;
+			var p = (l - (this.closed ? 0 : 1)) * t;
+			var intPoint = Math.floor(p);
+			var weight = p - intPoint;
+
+			if (this.closed) {
+				intPoint += intPoint > 0 ? 0 : (Math.floor(Math.abs(intPoint) / l) + 1) * l;
+			} else if (weight === 0 && intPoint === l - 1) {
+				intPoint = l - 2;
+				weight = 1;
+			}
+
+			var p0, p3; // 4 points (p1 & p2 defined below)
+
+			if (this.closed || intPoint > 0) {
+				p0 = points[(intPoint - 1) % l];
+			} else {
+				// extrapolate first point
+				tmp.subVectors(points[0], points[1]).add(points[0]);
+				p0 = tmp;
+			}
+
+			var p1 = points[intPoint % l];
+			var p2 = points[(intPoint + 1) % l];
+
+			if (this.closed || intPoint + 2 < l) {
+				p3 = points[(intPoint + 2) % l];
+			} else {
+				// extrapolate last point
+				tmp.subVectors(points[l - 1], points[l - 2]).add(points[l - 1]);
+				p3 = tmp;
+			}
+
+			if (this.curveType === 'centripetal' || this.curveType === 'chordal') {
+				// init Centripetal / Chordal Catmull-Rom
+				var pow = this.curveType === 'chordal' ? 0.5 : 0.25;
+				var dt0 = Math.pow(p0.distanceToSquared(p1), pow);
+				var dt1 = Math.pow(p1.distanceToSquared(p2), pow);
+				var dt2 = Math.pow(p2.distanceToSquared(p3), pow); // safety check for repeated points
+
+				if (dt1 < 1e-4) dt1 = 1.0;
+				if (dt0 < 1e-4) dt0 = dt1;
+				if (dt2 < 1e-4) dt2 = dt1;
+				px.initNonuniformCatmullRom(p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2);
+				py.initNonuniformCatmullRom(p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2);
+				pz.initNonuniformCatmullRom(p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2);
+			} else if (this.curveType === 'catmullrom') {
+				px.initCatmullRom(p0.x, p1.x, p2.x, p3.x, this.tension);
+				py.initCatmullRom(p0.y, p1.y, p2.y, p3.y, this.tension);
+				pz.initCatmullRom(p0.z, p1.z, p2.z, p3.z, this.tension);
+			}
+
+			point.set(px.calc(weight), py.calc(weight), pz.calc(weight));
+			return point;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.points = [];
+
+			for (var i = 0, l = source.points.length; i < l; i++) {
+				var point = source.points[i];
+				this.points.push(point.clone());
+			}
+
+			this.closed = source.closed;
+			this.curveType = source.curveType;
+			this.tension = source.tension;
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.points = [];
+
+			for (var i = 0, l = this.points.length; i < l; i++) {
+				var point = this.points[i];
+				data.points.push(point.toArray());
+			}
+
+			data.closed = this.closed;
+			data.curveType = this.curveType;
+			data.tension = this.tension;
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.points = [];
+
+			for (var i = 0, l = json.points.length; i < l; i++) {
+				var point = json.points[i];
+				this.points.push(new Vector3().fromArray(point));
+			}
+
+			this.closed = json.closed;
+			this.curveType = json.curveType;
+			this.tension = json.tension;
+			return this;
+		};
+
+		return CatmullRomCurve3;
+	}(Curve);
+
+	CatmullRomCurve3.prototype.isCatmullRomCurve3 = true;
+
+	/**
+	 * Bezier Curves formulas obtained from
+	 * http://en.wikipedia.org/wiki/Bézier_curve
+	 */
+	function CatmullRom(t, p0, p1, p2, p3) {
+		var v0 = (p2 - p0) * 0.5;
+		var v1 = (p3 - p1) * 0.5;
+		var t2 = t * t;
+		var t3 = t * t2;
+		return (2 * p1 - 2 * p2 + v0 + v1) * t3 + (-3 * p1 + 3 * p2 - 2 * v0 - v1) * t2 + v0 * t + p1;
+	} //
+
+
+	function QuadraticBezierP0(t, p) {
+		var k = 1 - t;
+		return k * k * p;
+	}
+
+	function QuadraticBezierP1(t, p) {
+		return 2 * (1 - t) * t * p;
+	}
+
+	function QuadraticBezierP2(t, p) {
+		return t * t * p;
+	}
+
+	function QuadraticBezier(t, p0, p1, p2) {
+		return QuadraticBezierP0(t, p0) + QuadraticBezierP1(t, p1) + QuadraticBezierP2(t, p2);
+	} //
+
+
+	function CubicBezierP0(t, p) {
+		var k = 1 - t;
+		return k * k * k * p;
+	}
+
+	function CubicBezierP1(t, p) {
+		var k = 1 - t;
+		return 3 * k * k * t * p;
+	}
+
+	function CubicBezierP2(t, p) {
+		return 3 * (1 - t) * t * t * p;
+	}
+
+	function CubicBezierP3(t, p) {
+		return t * t * t * p;
+	}
+
+	function CubicBezier(t, p0, p1, p2, p3) {
+		return CubicBezierP0(t, p0) + CubicBezierP1(t, p1) + CubicBezierP2(t, p2) + CubicBezierP3(t, p3);
+	}
+
+	var CubicBezierCurve = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(CubicBezierCurve, _Curve);
+
+		function CubicBezierCurve(v0, v1, v2, v3) {
+			var _this;
+
+			if (v0 === void 0) {
+				v0 = new Vector2();
+			}
+
+			if (v1 === void 0) {
+				v1 = new Vector2();
+			}
+
+			if (v2 === void 0) {
+				v2 = new Vector2();
+			}
+
+			if (v3 === void 0) {
+				v3 = new Vector2();
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'CubicBezierCurve';
+			_this.v0 = v0;
+			_this.v1 = v1;
+			_this.v2 = v2;
+			_this.v3 = v3;
+			return _this;
+		}
+
+		var _proto = CubicBezierCurve.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector2();
+			}
+
+			var point = optionalTarget;
+			var v0 = this.v0,
+					v1 = this.v1,
+					v2 = this.v2,
+					v3 = this.v3;
+			point.set(CubicBezier(t, v0.x, v1.x, v2.x, v3.x), CubicBezier(t, v0.y, v1.y, v2.y, v3.y));
+			return point;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			this.v3.copy(source.v3);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			data.v3 = this.v3.toArray();
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			this.v3.fromArray(json.v3);
+			return this;
+		};
+
+		return CubicBezierCurve;
+	}(Curve);
+
+	CubicBezierCurve.prototype.isCubicBezierCurve = true;
+
+	var CubicBezierCurve3 = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(CubicBezierCurve3, _Curve);
+
+		function CubicBezierCurve3(v0, v1, v2, v3) {
+			var _this;
+
+			if (v0 === void 0) {
+				v0 = new Vector3();
+			}
+
+			if (v1 === void 0) {
+				v1 = new Vector3();
+			}
+
+			if (v2 === void 0) {
+				v2 = new Vector3();
+			}
+
+			if (v3 === void 0) {
+				v3 = new Vector3();
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'CubicBezierCurve3';
+			_this.v0 = v0;
+			_this.v1 = v1;
+			_this.v2 = v2;
+			_this.v3 = v3;
+			return _this;
+		}
+
+		var _proto = CubicBezierCurve3.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector3();
+			}
+
+			var point = optionalTarget;
+			var v0 = this.v0,
+					v1 = this.v1,
+					v2 = this.v2,
+					v3 = this.v3;
+			point.set(CubicBezier(t, v0.x, v1.x, v2.x, v3.x), CubicBezier(t, v0.y, v1.y, v2.y, v3.y), CubicBezier(t, v0.z, v1.z, v2.z, v3.z));
+			return point;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			this.v3.copy(source.v3);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			data.v3 = this.v3.toArray();
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			this.v3.fromArray(json.v3);
+			return this;
+		};
+
+		return CubicBezierCurve3;
+	}(Curve);
+
+	CubicBezierCurve3.prototype.isCubicBezierCurve3 = true;
+
+	var LineCurve = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(LineCurve, _Curve);
+
+		function LineCurve(v1, v2) {
+			var _this;
+
+			if (v1 === void 0) {
+				v1 = new Vector2();
+			}
+
+			if (v2 === void 0) {
+				v2 = new Vector2();
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'LineCurve';
+			_this.v1 = v1;
+			_this.v2 = v2;
+			return _this;
+		}
+
+		var _proto = LineCurve.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector2();
+			}
+
+			var point = optionalTarget;
+
+			if (t === 1) {
+				point.copy(this.v2);
+			} else {
+				point.copy(this.v2).sub(this.v1);
+				point.multiplyScalar(t).add(this.v1);
+			}
+
+			return point;
+		} // Line curve is linear, so we can overwrite default getPointAt
+		;
+
+		_proto.getPointAt = function getPointAt(u, optionalTarget) {
+			return this.getPoint(u, optionalTarget);
+		};
+
+		_proto.getTangent = function getTangent(t, optionalTarget) {
+			var tangent = optionalTarget || new Vector2();
+			tangent.copy(this.v2).sub(this.v1).normalize();
+			return tangent;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			return this;
+		};
+
+		return LineCurve;
+	}(Curve);
+
+	LineCurve.prototype.isLineCurve = true;
+
+	var LineCurve3 = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(LineCurve3, _Curve);
+
+		function LineCurve3(v1, v2) {
+			var _this;
+
+			if (v1 === void 0) {
+				v1 = new Vector3();
+			}
+
+			if (v2 === void 0) {
+				v2 = new Vector3();
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'LineCurve3';
+			_this.isLineCurve3 = true;
+			_this.v1 = v1;
+			_this.v2 = v2;
+			return _this;
+		}
+
+		var _proto = LineCurve3.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector3();
+			}
+
+			var point = optionalTarget;
+
+			if (t === 1) {
+				point.copy(this.v2);
+			} else {
+				point.copy(this.v2).sub(this.v1);
+				point.multiplyScalar(t).add(this.v1);
+			}
+
+			return point;
+		} // Line curve is linear, so we can overwrite default getPointAt
+		;
+
+		_proto.getPointAt = function getPointAt(u, optionalTarget) {
+			return this.getPoint(u, optionalTarget);
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			return this;
+		};
+
+		return LineCurve3;
+	}(Curve);
+
+	var QuadraticBezierCurve = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(QuadraticBezierCurve, _Curve);
+
+		function QuadraticBezierCurve(v0, v1, v2) {
+			var _this;
+
+			if (v0 === void 0) {
+				v0 = new Vector2();
+			}
+
+			if (v1 === void 0) {
+				v1 = new Vector2();
+			}
+
+			if (v2 === void 0) {
+				v2 = new Vector2();
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'QuadraticBezierCurve';
+			_this.v0 = v0;
+			_this.v1 = v1;
+			_this.v2 = v2;
+			return _this;
+		}
+
+		var _proto = QuadraticBezierCurve.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector2();
+			}
+
+			var point = optionalTarget;
+			var v0 = this.v0,
+					v1 = this.v1,
+					v2 = this.v2;
+			point.set(QuadraticBezier(t, v0.x, v1.x, v2.x), QuadraticBezier(t, v0.y, v1.y, v2.y));
+			return point;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			return this;
+		};
+
+		return QuadraticBezierCurve;
+	}(Curve);
+
+	QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;
+
+	var QuadraticBezierCurve3 = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(QuadraticBezierCurve3, _Curve);
+
+		function QuadraticBezierCurve3(v0, v1, v2) {
+			var _this;
+
+			if (v0 === void 0) {
+				v0 = new Vector3();
+			}
+
+			if (v1 === void 0) {
+				v1 = new Vector3();
+			}
+
+			if (v2 === void 0) {
+				v2 = new Vector3();
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'QuadraticBezierCurve3';
+			_this.v0 = v0;
+			_this.v1 = v1;
+			_this.v2 = v2;
+			return _this;
+		}
+
+		var _proto = QuadraticBezierCurve3.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector3();
+			}
+
+			var point = optionalTarget;
+			var v0 = this.v0,
+					v1 = this.v1,
+					v2 = this.v2;
+			point.set(QuadraticBezier(t, v0.x, v1.x, v2.x), QuadraticBezier(t, v0.y, v1.y, v2.y), QuadraticBezier(t, v0.z, v1.z, v2.z));
+			return point;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.v0.copy(source.v0);
+			this.v1.copy(source.v1);
+			this.v2.copy(source.v2);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.v0 = this.v0.toArray();
+			data.v1 = this.v1.toArray();
+			data.v2 = this.v2.toArray();
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.v0.fromArray(json.v0);
+			this.v1.fromArray(json.v1);
+			this.v2.fromArray(json.v2);
+			return this;
+		};
+
+		return QuadraticBezierCurve3;
+	}(Curve);
+
+	QuadraticBezierCurve3.prototype.isQuadraticBezierCurve3 = true;
+
+	var SplineCurve = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(SplineCurve, _Curve);
+
+		function SplineCurve(points) {
+			var _this;
+
+			if (points === void 0) {
+				points = [];
+			}
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'SplineCurve';
+			_this.points = points;
+			return _this;
+		}
+
+		var _proto = SplineCurve.prototype;
+
+		_proto.getPoint = function getPoint(t, optionalTarget) {
+			if (optionalTarget === void 0) {
+				optionalTarget = new Vector2();
+			}
+
+			var point = optionalTarget;
+			var points = this.points;
+			var p = (points.length - 1) * t;
+			var intPoint = Math.floor(p);
+			var weight = p - intPoint;
+			var p0 = points[intPoint === 0 ? intPoint : intPoint - 1];
+			var p1 = points[intPoint];
+			var p2 = points[intPoint > points.length - 2 ? points.length - 1 : intPoint + 1];
+			var p3 = points[intPoint > points.length - 3 ? points.length - 1 : intPoint + 2];
+			point.set(CatmullRom(weight, p0.x, p1.x, p2.x, p3.x), CatmullRom(weight, p0.y, p1.y, p2.y, p3.y));
+			return point;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.points = [];
+
+			for (var i = 0, l = source.points.length; i < l; i++) {
+				var point = source.points[i];
+				this.points.push(point.clone());
+			}
+
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.points = [];
+
+			for (var i = 0, l = this.points.length; i < l; i++) {
+				var point = this.points[i];
+				data.points.push(point.toArray());
+			}
+
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.points = [];
+
+			for (var i = 0, l = json.points.length; i < l; i++) {
+				var point = json.points[i];
+				this.points.push(new Vector2().fromArray(point));
+			}
+
+			return this;
+		};
+
+		return SplineCurve;
+	}(Curve);
+
+	SplineCurve.prototype.isSplineCurve = true;
+
+	var Curves = /*#__PURE__*/Object.freeze({
+		__proto__: null,
+		ArcCurve: ArcCurve,
+		CatmullRomCurve3: CatmullRomCurve3,
+		CubicBezierCurve: CubicBezierCurve,
+		CubicBezierCurve3: CubicBezierCurve3,
+		EllipseCurve: EllipseCurve,
+		LineCurve: LineCurve,
+		LineCurve3: LineCurve3,
+		QuadraticBezierCurve: QuadraticBezierCurve,
+		QuadraticBezierCurve3: QuadraticBezierCurve3,
+		SplineCurve: SplineCurve
+	});
+
+	/**************************************************************
+	 *	Curved Path - a curve path is simply a array of connected
+	 *	curves, but retains the api of a curve
+	 **************************************************************/
+
+	var CurvePath = /*#__PURE__*/function (_Curve) {
+		_inheritsLoose(CurvePath, _Curve);
+
+		function CurvePath() {
+			var _this;
+
+			_this = _Curve.call(this) || this;
+			_this.type = 'CurvePath';
+			_this.curves = [];
+			_this.autoClose = false; // Automatically closes the path
+
+			return _this;
+		}
+
+		var _proto = CurvePath.prototype;
+
+		_proto.add = function add(curve) {
+			this.curves.push(curve);
+		};
+
+		_proto.closePath = function closePath() {
+			// Add a line curve if start and end of lines are not connected
+			var startPoint = this.curves[0].getPoint(0);
+			var endPoint = this.curves[this.curves.length - 1].getPoint(1);
+
+			if (!startPoint.equals(endPoint)) {
+				this.curves.push(new LineCurve(endPoint, startPoint));
+			}
+		} // To get accurate point with reference to
+		// entire path distance at time t,
+		// following has to be done:
+		// 1. Length of each sub path have to be known
+		// 2. Locate and identify type of curve
+		// 3. Get t for the curve
+		// 4. Return curve.getPointAt(t')
+		;
+
+		_proto.getPoint = function getPoint(t) {
+			var d = t * this.getLength();
+			var curveLengths = this.getCurveLengths();
+			var i = 0; // To think about boundaries points.
+
+			while (i < curveLengths.length) {
+				if (curveLengths[i] >= d) {
+					var diff = curveLengths[i] - d;
+					var curve = this.curves[i];
+					var segmentLength = curve.getLength();
+					var u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
+					return curve.getPointAt(u);
+				}
+
+				i++;
+			}
+
+			return null; // loop where sum != 0, sum > d , sum+1 <d
+		} // We cannot use the default THREE.Curve getPoint() with getLength() because in
+		// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
+		// getPoint() depends on getLength
+		;
+
+		_proto.getLength = function getLength() {
+			var lens = this.getCurveLengths();
+			return lens[lens.length - 1];
+		} // cacheLengths must be recalculated.
+		;
+
+		_proto.updateArcLengths = function updateArcLengths() {
+			this.needsUpdate = true;
+			this.cacheLengths = null;
+			this.getCurveLengths();
+		} // Compute lengths and cache them
+		// We cannot overwrite getLengths() because UtoT mapping uses it.
+		;
+
+		_proto.getCurveLengths = function getCurveLengths() {
+			// We use cache values if curves and cache array are same length
+			if (this.cacheLengths && this.cacheLengths.length === this.curves.length) {
+				return this.cacheLengths;
+			} // Get length of sub-curve
+			// Push sums into cached array
+
+
+			var lengths = [];
+			var sums = 0;
+
+			for (var i = 0, l = this.curves.length; i < l; i++) {
+				sums += this.curves[i].getLength();
+				lengths.push(sums);
+			}
+
+			this.cacheLengths = lengths;
+			return lengths;
+		};
+
+		_proto.getSpacedPoints = function getSpacedPoints(divisions) {
+			if (divisions === void 0) {
+				divisions = 40;
+			}
+
+			var points = [];
+
+			for (var i = 0; i <= divisions; i++) {
+				points.push(this.getPoint(i / divisions));
+			}
+
+			if (this.autoClose) {
+				points.push(points[0]);
+			}
+
+			return points;
+		};
+
+		_proto.getPoints = function getPoints(divisions) {
+			if (divisions === void 0) {
+				divisions = 12;
+			}
+
+			var points = [];
+			var last;
+
+			for (var i = 0, curves = this.curves; i < curves.length; i++) {
+				var curve = curves[i];
+				var resolution = curve && curve.isEllipseCurve ? divisions * 2 : curve && (curve.isLineCurve || curve.isLineCurve3) ? 1 : curve && curve.isSplineCurve ? divisions * curve.points.length : divisions;
+				var pts = curve.getPoints(resolution);
+
+				for (var j = 0; j < pts.length; j++) {
+					var point = pts[j];
+					if (last && last.equals(point)) continue; // ensures no consecutive points are duplicates
+
+					points.push(point);
+					last = point;
+				}
+			}
+
+			if (this.autoClose && points.length > 1 && !points[points.length - 1].equals(points[0])) {
+				points.push(points[0]);
+			}
+
+			return points;
+		};
+
+		_proto.copy = function copy(source) {
+			_Curve.prototype.copy.call(this, source);
+
+			this.curves = [];
+
+			for (var i = 0, l = source.curves.length; i < l; i++) {
+				var curve = source.curves[i];
+				this.curves.push(curve.clone());
+			}
+
+			this.autoClose = source.autoClose;
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Curve.prototype.toJSON.call(this);
+
+			data.autoClose = this.autoClose;
+			data.curves = [];
+
+			for (var i = 0, l = this.curves.length; i < l; i++) {
+				var curve = this.curves[i];
+				data.curves.push(curve.toJSON());
+			}
+
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Curve.prototype.fromJSON.call(this, json);
+
+			this.autoClose = json.autoClose;
+			this.curves = [];
+
+			for (var i = 0, l = json.curves.length; i < l; i++) {
+				var curve = json.curves[i];
+				this.curves.push(new Curves[curve.type]().fromJSON(curve));
+			}
+
+			return this;
+		};
+
+		return CurvePath;
+	}(Curve);
+
+	var Path = /*#__PURE__*/function (_CurvePath) {
+		_inheritsLoose(Path, _CurvePath);
+
+		function Path(points) {
+			var _this;
+
+			_this = _CurvePath.call(this) || this;
+			_this.type = 'Path';
+			_this.currentPoint = new Vector2();
+
+			if (points) {
+				_this.setFromPoints(points);
+			}
+
+			return _this;
+		}
+
+		var _proto = Path.prototype;
+
+		_proto.setFromPoints = function setFromPoints(points) {
+			this.moveTo(points[0].x, points[0].y);
+
+			for (var i = 1, l = points.length; i < l; i++) {
+				this.lineTo(points[i].x, points[i].y);
+			}
+
+			return this;
+		};
+
+		_proto.moveTo = function moveTo(x, y) {
+			this.currentPoint.set(x, y); // TODO consider referencing vectors instead of copying?
+
+			return this;
+		};
+
+		_proto.lineTo = function lineTo(x, y) {
+			var curve = new LineCurve(this.currentPoint.clone(), new Vector2(x, y));
+			this.curves.push(curve);
+			this.currentPoint.set(x, y);
+			return this;
+		};
+
+		_proto.quadraticCurveTo = function quadraticCurveTo(aCPx, aCPy, aX, aY) {
+			var curve = new QuadraticBezierCurve(this.currentPoint.clone(), new Vector2(aCPx, aCPy), new Vector2(aX, aY));
+			this.curves.push(curve);
+			this.currentPoint.set(aX, aY);
+			return this;
+		};
+
+		_proto.bezierCurveTo = function bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
+			var curve = new CubicBezierCurve(this.currentPoint.clone(), new Vector2(aCP1x, aCP1y), new Vector2(aCP2x, aCP2y), new Vector2(aX, aY));
+			this.curves.push(curve);
+			this.currentPoint.set(aX, aY);
+			return this;
+		};
+
+		_proto.splineThru = function splineThru(pts
+		/*Array of Vector*/
+		) {
+			var npts = [this.currentPoint.clone()].concat(pts);
+			var curve = new SplineCurve(npts);
+			this.curves.push(curve);
+			this.currentPoint.copy(pts[pts.length - 1]);
+			return this;
+		};
+
+		_proto.arc = function arc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
+			var x0 = this.currentPoint.x;
+			var y0 = this.currentPoint.y;
+			this.absarc(aX + x0, aY + y0, aRadius, aStartAngle, aEndAngle, aClockwise);
+			return this;
+		};
+
+		_proto.absarc = function absarc(aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise) {
+			this.absellipse(aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise);
+			return this;
+		};
+
+		_proto.ellipse = function ellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
+			var x0 = this.currentPoint.x;
+			var y0 = this.currentPoint.y;
+			this.absellipse(aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);
+			return this;
+		};
+
+		_proto.absellipse = function absellipse(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation) {
+			var curve = new EllipseCurve(aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation);
+
+			if (this.curves.length > 0) {
+				// if a previous curve is present, attempt to join
+				var firstPoint = curve.getPoint(0);
+
+				if (!firstPoint.equals(this.currentPoint)) {
+					this.lineTo(firstPoint.x, firstPoint.y);
+				}
+			}
+
+			this.curves.push(curve);
+			var lastPoint = curve.getPoint(1);
+			this.currentPoint.copy(lastPoint);
+			return this;
+		};
+
+		_proto.copy = function copy(source) {
+			_CurvePath.prototype.copy.call(this, source);
+
+			this.currentPoint.copy(source.currentPoint);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _CurvePath.prototype.toJSON.call(this);
+
+			data.currentPoint = this.currentPoint.toArray();
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_CurvePath.prototype.fromJSON.call(this, json);
+
+			this.currentPoint.fromArray(json.currentPoint);
+			return this;
+		};
+
+		return Path;
+	}(CurvePath);
+
+	var Shape = /*#__PURE__*/function (_Path) {
+		_inheritsLoose(Shape, _Path);
+
+		function Shape(points) {
+			var _this;
+
+			_this = _Path.call(this, points) || this;
+			_this.uuid = MathUtils.generateUUID();
+			_this.type = 'Shape';
+			_this.holes = [];
+			return _this;
+		}
+
+		var _proto = Shape.prototype;
+
+		_proto.getPointsHoles = function getPointsHoles(divisions) {
+			var holesPts = [];
+
+			for (var i = 0, l = this.holes.length; i < l; i++) {
+				holesPts[i] = this.holes[i].getPoints(divisions);
+			}
+
+			return holesPts;
+		} // get points of shape and holes (keypoints based on segments parameter)
+		;
+
+		_proto.extractPoints = function extractPoints(divisions) {
+			return {
+				shape: this.getPoints(divisions),
+				holes: this.getPointsHoles(divisions)
+			};
+		};
+
+		_proto.copy = function copy(source) {
+			_Path.prototype.copy.call(this, source);
+
+			this.holes = [];
+
+			for (var i = 0, l = source.holes.length; i < l; i++) {
+				var hole = source.holes[i];
+				this.holes.push(hole.clone());
+			}
+
+			return this;
+		};
+
+		_proto.toJSON = function toJSON() {
+			var data = _Path.prototype.toJSON.call(this);
+
+			data.uuid = this.uuid;
+			data.holes = [];
+
+			for (var i = 0, l = this.holes.length; i < l; i++) {
+				var hole = this.holes[i];
+				data.holes.push(hole.toJSON());
+			}
+
+			return data;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			_Path.prototype.fromJSON.call(this, json);
+
+			this.uuid = json.uuid;
+			this.holes = [];
+
+			for (var i = 0, l = json.holes.length; i < l; i++) {
+				var hole = json.holes[i];
+				this.holes.push(new Path().fromJSON(hole));
+			}
+
+			return this;
+		};
+
+		return Shape;
+	}(Path);
+
+	var Light = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(Light, _Object3D);
+
+		function Light(color, intensity) {
+			var _this;
+
+			if (intensity === void 0) {
+				intensity = 1;
+			}
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'Light';
+			_this.color = new Color(color);
+			_this.intensity = intensity;
+			return _this;
+		}
+
+		var _proto = Light.prototype;
+
+		_proto.copy = function copy(source) {
+			_Object3D.prototype.copy.call(this, source);
+
+			this.color.copy(source.color);
+			this.intensity = source.intensity;
+			return this;
+		};
+
+		_proto.toJSON = function toJSON(meta) {
+			var data = _Object3D.prototype.toJSON.call(this, meta);
+
+			data.object.color = this.color.getHex();
+			data.object.intensity = this.intensity;
+			if (this.groundColor !== undefined) data.object.groundColor = this.groundColor.getHex();
+			if (this.distance !== undefined) data.object.distance = this.distance;
+			if (this.angle !== undefined) data.object.angle = this.angle;
+			if (this.decay !== undefined) data.object.decay = this.decay;
+			if (this.penumbra !== undefined) data.object.penumbra = this.penumbra;
+			if (this.shadow !== undefined) data.object.shadow = this.shadow.toJSON();
+			return data;
+		};
+
+		return Light;
+	}(Object3D);
+
+	Light.prototype.isLight = true;
+
+	var HemisphereLight = /*#__PURE__*/function (_Light) {
+		_inheritsLoose(HemisphereLight, _Light);
+
+		function HemisphereLight(skyColor, groundColor, intensity) {
+			var _this;
+
+			_this = _Light.call(this, skyColor, intensity) || this;
+			_this.type = 'HemisphereLight';
+
+			_this.position.copy(Object3D.DefaultUp);
+
+			_this.updateMatrix();
+
+			_this.groundColor = new Color(groundColor);
+			return _this;
+		}
+
+		var _proto = HemisphereLight.prototype;
+
+		_proto.copy = function copy(source) {
+			Light.prototype.copy.call(this, source);
+			this.groundColor.copy(source.groundColor);
+			return this;
+		};
+
+		return HemisphereLight;
+	}(Light);
+
+	HemisphereLight.prototype.isHemisphereLight = true;
+
+	var _projScreenMatrix = /*@__PURE__*/new Matrix4();
+
+	var _lightPositionWorld = /*@__PURE__*/new Vector3();
+
+	var _lookTarget = /*@__PURE__*/new Vector3();
+
+	var LightShadow = /*#__PURE__*/function () {
+		function LightShadow(camera) {
+			this.camera = camera;
+			this.bias = 0;
+			this.normalBias = 0;
+			this.radius = 1;
+			this.mapSize = new Vector2(512, 512);
+			this.map = null;
+			this.mapPass = null;
+			this.matrix = new Matrix4();
+			this.autoUpdate = true;
+			this.needsUpdate = false;
+			this._frustum = new Frustum();
+			this._frameExtents = new Vector2(1, 1);
+			this._viewportCount = 1;
+			this._viewports = [new Vector4(0, 0, 1, 1)];
+		}
+
+		var _proto = LightShadow.prototype;
+
+		_proto.getViewportCount = function getViewportCount() {
+			return this._viewportCount;
+		};
+
+		_proto.getFrustum = function getFrustum() {
+			return this._frustum;
+		};
+
+		_proto.updateMatrices = function updateMatrices(light) {
+			var shadowCamera = this.camera;
+			var shadowMatrix = this.matrix;
+
+			_lightPositionWorld.setFromMatrixPosition(light.matrixWorld);
+
+			shadowCamera.position.copy(_lightPositionWorld);
+
+			_lookTarget.setFromMatrixPosition(light.target.matrixWorld);
+
+			shadowCamera.lookAt(_lookTarget);
+			shadowCamera.updateMatrixWorld();
+
+			_projScreenMatrix.multiplyMatrices(shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse);
+
+			this._frustum.setFromProjectionMatrix(_projScreenMatrix);
+
+			shadowMatrix.set(0.5, 0.0, 0.0, 0.5, 0.0, 0.5, 0.0, 0.5, 0.0, 0.0, 0.5, 0.5, 0.0, 0.0, 0.0, 1.0);
+			shadowMatrix.multiply(shadowCamera.projectionMatrix);
+			shadowMatrix.multiply(shadowCamera.matrixWorldInverse);
+		};
+
+		_proto.getViewport = function getViewport(viewportIndex) {
+			return this._viewports[viewportIndex];
+		};
+
+		_proto.getFrameExtents = function getFrameExtents() {
+			return this._frameExtents;
+		};
+
+		_proto.copy = function copy(source) {
+			this.camera = source.camera.clone();
+			this.bias = source.bias;
+			this.radius = source.radius;
+			this.mapSize.copy(source.mapSize);
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		_proto.toJSON = function toJSON() {
+			var object = {};
+			if (this.bias !== 0) object.bias = this.bias;
+			if (this.normalBias !== 0) object.normalBias = this.normalBias;
+			if (this.radius !== 1) object.radius = this.radius;
+			if (this.mapSize.x !== 512 || this.mapSize.y !== 512) object.mapSize = this.mapSize.toArray();
+			object.camera = this.camera.toJSON(false).object;
+			delete object.camera.matrix;
+			return object;
+		};
+
+		return LightShadow;
+	}();
+
+	var SpotLightShadow = /*#__PURE__*/function (_LightShadow) {
+		_inheritsLoose(SpotLightShadow, _LightShadow);
+
+		function SpotLightShadow() {
+			var _this;
+
+			_this = _LightShadow.call(this, new PerspectiveCamera(50, 1, 0.5, 500)) || this;
+			_this.focus = 1;
+			return _this;
+		}
+
+		var _proto = SpotLightShadow.prototype;
+
+		_proto.updateMatrices = function updateMatrices(light) {
+			var camera = this.camera;
+			var fov = MathUtils.RAD2DEG * 2 * light.angle * this.focus;
+			var aspect = this.mapSize.width / this.mapSize.height;
+			var far = light.distance || camera.far;
+
+			if (fov !== camera.fov || aspect !== camera.aspect || far !== camera.far) {
+				camera.fov = fov;
+				camera.aspect = aspect;
+				camera.far = far;
+				camera.updateProjectionMatrix();
+			}
+
+			_LightShadow.prototype.updateMatrices.call(this, light);
+		};
+
+		return SpotLightShadow;
+	}(LightShadow);
+
+	SpotLightShadow.prototype.isSpotLightShadow = true;
+
+	var SpotLight = /*#__PURE__*/function (_Light) {
+		_inheritsLoose(SpotLight, _Light);
+
+		function SpotLight(color, intensity, distance, angle, penumbra, decay) {
+			var _this;
+
+			if (distance === void 0) {
+				distance = 0;
+			}
+
+			if (angle === void 0) {
+				angle = Math.PI / 3;
+			}
+
+			if (penumbra === void 0) {
+				penumbra = 0;
+			}
+
+			if (decay === void 0) {
+				decay = 1;
+			}
+
+			_this = _Light.call(this, color, intensity) || this;
+			_this.type = 'SpotLight';
+
+			_this.position.copy(Object3D.DefaultUp);
+
+			_this.updateMatrix();
+
+			_this.target = new Object3D();
+			_this.distance = distance;
+			_this.angle = angle;
+			_this.penumbra = penumbra;
+			_this.decay = decay; // for physically correct lights, should be 2.
+
+			_this.shadow = new SpotLightShadow();
+			return _this;
+		}
+
+		var _proto = SpotLight.prototype;
+
+		_proto.copy = function copy(source) {
+			_Light.prototype.copy.call(this, source);
+
+			this.distance = source.distance;
+			this.angle = source.angle;
+			this.penumbra = source.penumbra;
+			this.decay = source.decay;
+			this.target = source.target.clone();
+			this.shadow = source.shadow.clone();
+			return this;
+		};
+
+		_createClass(SpotLight, [{
+			key: "power",
+			get: function get() {
+				// intensity = power per solid angle.
+				// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+				return this.intensity * Math.PI;
+			},
+			set: function set(power) {
+				// intensity = power per solid angle.
+				// ref: equation (17) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+				this.intensity = power / Math.PI;
+			}
+		}]);
+
+		return SpotLight;
+	}(Light);
+
+	SpotLight.prototype.isSpotLight = true;
+
+	var _projScreenMatrix$1 = /*@__PURE__*/new Matrix4();
+
+	var _lightPositionWorld$1 = /*@__PURE__*/new Vector3();
+
+	var _lookTarget$1 = /*@__PURE__*/new Vector3();
+
+	var PointLightShadow = /*#__PURE__*/function (_LightShadow) {
+		_inheritsLoose(PointLightShadow, _LightShadow);
+
+		function PointLightShadow() {
+			var _this;
+
+			_this = _LightShadow.call(this, new PerspectiveCamera(90, 1, 0.5, 500)) || this;
+			_this._frameExtents = new Vector2(4, 2);
+			_this._viewportCount = 6;
+			_this._viewports = [// These viewports map a cube-map onto a 2D texture with the
+			// following orientation:
+			//
+			//	xzXZ
+			//	 y Y
+			//
+			// X - Positive x direction
+			// x - Negative x direction
+			// Y - Positive y direction
+			// y - Negative y direction
+			// Z - Positive z direction
+			// z - Negative z direction
+			// positive X
+			new Vector4(2, 1, 1, 1), // negative X
+			new Vector4(0, 1, 1, 1), // positive Z
+			new Vector4(3, 1, 1, 1), // negative Z
+			new Vector4(1, 1, 1, 1), // positive Y
+			new Vector4(3, 0, 1, 1), // negative Y
+			new Vector4(1, 0, 1, 1)];
+			_this._cubeDirections = [new Vector3(1, 0, 0), new Vector3(-1, 0, 0), new Vector3(0, 0, 1), new Vector3(0, 0, -1), new Vector3(0, 1, 0), new Vector3(0, -1, 0)];
+			_this._cubeUps = [new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 1, 0), new Vector3(0, 0, 1), new Vector3(0, 0, -1)];
+			return _this;
+		}
+
+		var _proto = PointLightShadow.prototype;
+
+		_proto.updateMatrices = function updateMatrices(light, viewportIndex) {
+			if (viewportIndex === void 0) {
+				viewportIndex = 0;
+			}
+
+			var camera = this.camera;
+			var shadowMatrix = this.matrix;
+
+			_lightPositionWorld$1.setFromMatrixPosition(light.matrixWorld);
+
+			camera.position.copy(_lightPositionWorld$1);
+
+			_lookTarget$1.copy(camera.position);
+
+			_lookTarget$1.add(this._cubeDirections[viewportIndex]);
+
+			camera.up.copy(this._cubeUps[viewportIndex]);
+			camera.lookAt(_lookTarget$1);
+			camera.updateMatrixWorld();
+			shadowMatrix.makeTranslation(-_lightPositionWorld$1.x, -_lightPositionWorld$1.y, -_lightPositionWorld$1.z);
+
+			_projScreenMatrix$1.multiplyMatrices(camera.projectionMatrix, camera.matrixWorldInverse);
+
+			this._frustum.setFromProjectionMatrix(_projScreenMatrix$1);
+		};
+
+		return PointLightShadow;
+	}(LightShadow);
+
+	PointLightShadow.prototype.isPointLightShadow = true;
+
+	var PointLight = /*#__PURE__*/function (_Light) {
+		_inheritsLoose(PointLight, _Light);
+
+		function PointLight(color, intensity, distance, decay) {
+			var _this;
+
+			if (distance === void 0) {
+				distance = 0;
+			}
+
+			if (decay === void 0) {
+				decay = 1;
+			}
+
+			_this = _Light.call(this, color, intensity) || this;
+			_this.type = 'PointLight';
+			_this.distance = distance;
+			_this.decay = decay; // for physically correct lights, should be 2.
+
+			_this.shadow = new PointLightShadow();
+			return _this;
+		}
+
+		var _proto = PointLight.prototype;
+
+		_proto.copy = function copy(source) {
+			_Light.prototype.copy.call(this, source);
+
+			this.distance = source.distance;
+			this.decay = source.decay;
+			this.shadow = source.shadow.clone();
+			return this;
+		};
+
+		_createClass(PointLight, [{
+			key: "power",
+			get: function get() {
+				// intensity = power per solid angle.
+				// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+				return this.intensity * 4 * Math.PI;
+			},
+			set: function set(power) {
+				// intensity = power per solid angle.
+				// ref: equation (15) from https://seblagarde.files.wordpress.com/2015/07/course_notes_moving_frostbite_to_pbr_v32.pdf
+				this.intensity = power / (4 * Math.PI);
+			}
+		}]);
+
+		return PointLight;
+	}(Light);
+
+	PointLight.prototype.isPointLight = true;
+
+	var OrthographicCamera = /*#__PURE__*/function (_Camera) {
+		_inheritsLoose(OrthographicCamera, _Camera);
+
+		function OrthographicCamera(left, right, top, bottom, near, far) {
+			var _this;
+
+			if (left === void 0) {
+				left = -1;
+			}
+
+			if (right === void 0) {
+				right = 1;
+			}
+
+			if (top === void 0) {
+				top = 1;
+			}
+
+			if (bottom === void 0) {
+				bottom = -1;
+			}
+
+			if (near === void 0) {
+				near = 0.1;
+			}
+
+			if (far === void 0) {
+				far = 2000;
+			}
+
+			_this = _Camera.call(this) || this;
+			_this.type = 'OrthographicCamera';
+			_this.zoom = 1;
+			_this.view = null;
+			_this.left = left;
+			_this.right = right;
+			_this.top = top;
+			_this.bottom = bottom;
+			_this.near = near;
+			_this.far = far;
+
+			_this.updateProjectionMatrix();
+
+			return _this;
+		}
+
+		var _proto = OrthographicCamera.prototype;
+
+		_proto.copy = function copy(source, recursive) {
+			_Camera.prototype.copy.call(this, source, recursive);
+
+			this.left = source.left;
+			this.right = source.right;
+			this.top = source.top;
+			this.bottom = source.bottom;
+			this.near = source.near;
+			this.far = source.far;
+			this.zoom = source.zoom;
+			this.view = source.view === null ? null : Object.assign({}, source.view);
+			return this;
+		};
+
+		_proto.setViewOffset = function setViewOffset(fullWidth, fullHeight, x, y, width, height) {
+			if (this.view === null) {
+				this.view = {
+					enabled: true,
+					fullWidth: 1,
+					fullHeight: 1,
+					offsetX: 0,
+					offsetY: 0,
+					width: 1,
+					height: 1
+				};
+			}
+
+			this.view.enabled = true;
+			this.view.fullWidth = fullWidth;
+			this.view.fullHeight = fullHeight;
+			this.view.offsetX = x;
+			this.view.offsetY = y;
+			this.view.width = width;
+			this.view.height = height;
+			this.updateProjectionMatrix();
+		};
+
+		_proto.clearViewOffset = function clearViewOffset() {
+			if (this.view !== null) {
+				this.view.enabled = false;
+			}
+
+			this.updateProjectionMatrix();
+		};
+
+		_proto.updateProjectionMatrix = function updateProjectionMatrix() {
+			var dx = (this.right - this.left) / (2 * this.zoom);
+			var dy = (this.top - this.bottom) / (2 * this.zoom);
+			var cx = (this.right + this.left) / 2;
+			var cy = (this.top + this.bottom) / 2;
+			var left = cx - dx;
+			var right = cx + dx;
+			var top = cy + dy;
+			var bottom = cy - dy;
+
+			if (this.view !== null && this.view.enabled) {
+				var scaleW = (this.right - this.left) / this.view.fullWidth / this.zoom;
+				var scaleH = (this.top - this.bottom) / this.view.fullHeight / this.zoom;
+				left += scaleW * this.view.offsetX;
+				right = left + scaleW * this.view.width;
+				top -= scaleH * this.view.offsetY;
+				bottom = top - scaleH * this.view.height;
+			}
+
+			this.projectionMatrix.makeOrthographic(left, right, top, bottom, this.near, this.far);
+			this.projectionMatrixInverse.copy(this.projectionMatrix).invert();
+		};
+
+		_proto.toJSON = function toJSON(meta) {
+			var data = Object3D.prototype.toJSON.call(this, meta);
+			data.object.zoom = this.zoom;
+			data.object.left = this.left;
+			data.object.right = this.right;
+			data.object.top = this.top;
+			data.object.bottom = this.bottom;
+			data.object.near = this.near;
+			data.object.far = this.far;
+			if (this.view !== null) data.object.view = Object.assign({}, this.view);
+			return data;
+		};
+
+		return OrthographicCamera;
+	}(Camera);
+
+	OrthographicCamera.prototype.isOrthographicCamera = true;
+
+	var DirectionalLightShadow = /*#__PURE__*/function (_LightShadow) {
+		_inheritsLoose(DirectionalLightShadow, _LightShadow);
+
+		function DirectionalLightShadow() {
+			return _LightShadow.call(this, new OrthographicCamera(-5, 5, 5, -5, 0.5, 500)) || this;
+		}
+
+		return DirectionalLightShadow;
+	}(LightShadow);
+
+	DirectionalLightShadow.prototype.isDirectionalLightShadow = true;
+
+	var DirectionalLight = /*#__PURE__*/function (_Light) {
+		_inheritsLoose(DirectionalLight, _Light);
+
+		function DirectionalLight(color, intensity) {
+			var _this;
+
+			_this = _Light.call(this, color, intensity) || this;
+			_this.type = 'DirectionalLight';
+
+			_this.position.copy(Object3D.DefaultUp);
+
+			_this.updateMatrix();
+
+			_this.target = new Object3D();
+			_this.shadow = new DirectionalLightShadow();
+			return _this;
+		}
+
+		var _proto = DirectionalLight.prototype;
+
+		_proto.copy = function copy(source) {
+			_Light.prototype.copy.call(this, source);
+
+			this.target = source.target.clone();
+			this.shadow = source.shadow.clone();
+			return this;
+		};
+
+		return DirectionalLight;
+	}(Light);
+
+	DirectionalLight.prototype.isDirectionalLight = true;
+
+	var AmbientLight = /*#__PURE__*/function (_Light) {
+		_inheritsLoose(AmbientLight, _Light);
+
+		function AmbientLight(color, intensity) {
+			var _this;
+
+			_this = _Light.call(this, color, intensity) || this;
+			_this.type = 'AmbientLight';
+			return _this;
+		}
+
+		return AmbientLight;
+	}(Light);
+
+	AmbientLight.prototype.isAmbientLight = true;
+
+	var RectAreaLight = /*#__PURE__*/function (_Light) {
+		_inheritsLoose(RectAreaLight, _Light);
+
+		function RectAreaLight(color, intensity, width, height) {
+			var _this;
+
+			if (width === void 0) {
+				width = 10;
+			}
+
+			if (height === void 0) {
+				height = 10;
+			}
+
+			_this = _Light.call(this, color, intensity) || this;
+			_this.type = 'RectAreaLight';
+			_this.width = width;
+			_this.height = height;
+			return _this;
+		}
+
+		var _proto = RectAreaLight.prototype;
+
+		_proto.copy = function copy(source) {
+			_Light.prototype.copy.call(this, source);
+
+			this.width = source.width;
+			this.height = source.height;
+			return this;
+		};
+
+		_proto.toJSON = function toJSON(meta) {
+			var data = _Light.prototype.toJSON.call(this, meta);
+
+			data.object.width = this.width;
+			data.object.height = this.height;
+			return data;
+		};
+
+		return RectAreaLight;
+	}(Light);
+
+	RectAreaLight.prototype.isRectAreaLight = true;
+
+	/**
+	 * Primary reference:
+	 *	 https://graphics.stanford.edu/papers/envmap/envmap.pdf
+	 *
+	 * Secondary reference:
+	 *	 https://www.ppsloan.org/publications/StupidSH36.pdf
+	 */
+	// 3-band SH defined by 9 coefficients
+
+	var SphericalHarmonics3 = /*#__PURE__*/function () {
+		function SphericalHarmonics3() {
+			this.coefficients = [];
+
+			for (var i = 0; i < 9; i++) {
+				this.coefficients.push(new Vector3());
+			}
+		}
+
+		var _proto = SphericalHarmonics3.prototype;
+
+		_proto.set = function set(coefficients) {
+			for (var i = 0; i < 9; i++) {
+				this.coefficients[i].copy(coefficients[i]);
+			}
+
+			return this;
+		};
+
+		_proto.zero = function zero() {
+			for (var i = 0; i < 9; i++) {
+				this.coefficients[i].set(0, 0, 0);
+			}
+
+			return this;
+		} // get the radiance in the direction of the normal
+		// target is a Vector3
+		;
+
+		_proto.getAt = function getAt(normal, target) {
+			// normal is assumed to be unit length
+			var x = normal.x,
+					y = normal.y,
+					z = normal.z;
+			var coeff = this.coefficients; // band 0
+
+			target.copy(coeff[0]).multiplyScalar(0.282095); // band 1
+
+			target.addScaledVector(coeff[1], 0.488603 * y);
+			target.addScaledVector(coeff[2], 0.488603 * z);
+			target.addScaledVector(coeff[3], 0.488603 * x); // band 2
+
+			target.addScaledVector(coeff[4], 1.092548 * (x * y));
+			target.addScaledVector(coeff[5], 1.092548 * (y * z));
+			target.addScaledVector(coeff[6], 0.315392 * (3.0 * z * z - 1.0));
+			target.addScaledVector(coeff[7], 1.092548 * (x * z));
+			target.addScaledVector(coeff[8], 0.546274 * (x * x - y * y));
+			return target;
+		} // get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
+		// target is a Vector3
+		// https://graphics.stanford.edu/papers/envmap/envmap.pdf
+		;
+
+		_proto.getIrradianceAt = function getIrradianceAt(normal, target) {
+			// normal is assumed to be unit length
+			var x = normal.x,
+					y = normal.y,
+					z = normal.z;
+			var coeff = this.coefficients; // band 0
+
+			target.copy(coeff[0]).multiplyScalar(0.886227); // π * 0.282095
+			// band 1
+
+			target.addScaledVector(coeff[1], 2.0 * 0.511664 * y); // ( 2 * π / 3 ) * 0.488603
+
+			target.addScaledVector(coeff[2], 2.0 * 0.511664 * z);
+			target.addScaledVector(coeff[3], 2.0 * 0.511664 * x); // band 2
+
+			target.addScaledVector(coeff[4], 2.0 * 0.429043 * x * y); // ( π / 4 ) * 1.092548
+
+			target.addScaledVector(coeff[5], 2.0 * 0.429043 * y * z);
+			target.addScaledVector(coeff[6], 0.743125 * z * z - 0.247708); // ( π / 4 ) * 0.315392 * 3
+
+			target.addScaledVector(coeff[7], 2.0 * 0.429043 * x * z);
+			target.addScaledVector(coeff[8], 0.429043 * (x * x - y * y)); // ( π / 4 ) * 0.546274
+
+			return target;
+		};
+
+		_proto.add = function add(sh) {
+			for (var i = 0; i < 9; i++) {
+				this.coefficients[i].add(sh.coefficients[i]);
+			}
+
+			return this;
+		};
+
+		_proto.addScaledSH = function addScaledSH(sh, s) {
+			for (var i = 0; i < 9; i++) {
+				this.coefficients[i].addScaledVector(sh.coefficients[i], s);
+			}
+
+			return this;
+		};
+
+		_proto.scale = function scale(s) {
+			for (var i = 0; i < 9; i++) {
+				this.coefficients[i].multiplyScalar(s);
+			}
+
+			return this;
+		};
+
+		_proto.lerp = function lerp(sh, alpha) {
+			for (var i = 0; i < 9; i++) {
+				this.coefficients[i].lerp(sh.coefficients[i], alpha);
+			}
+
+			return this;
+		};
+
+		_proto.equals = function equals(sh) {
+			for (var i = 0; i < 9; i++) {
+				if (!this.coefficients[i].equals(sh.coefficients[i])) {
+					return false;
+				}
+			}
+
+			return true;
+		};
+
+		_proto.copy = function copy(sh) {
+			return this.set(sh.coefficients);
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		_proto.fromArray = function fromArray(array, offset) {
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			var coefficients = this.coefficients;
+
+			for (var i = 0; i < 9; i++) {
+				coefficients[i].fromArray(array, offset + i * 3);
+			}
+
+			return this;
+		};
+
+		_proto.toArray = function toArray(array, offset) {
+			if (array === void 0) {
+				array = [];
+			}
+
+			if (offset === void 0) {
+				offset = 0;
+			}
+
+			var coefficients = this.coefficients;
+
+			for (var i = 0; i < 9; i++) {
+				coefficients[i].toArray(array, offset + i * 3);
+			}
+
+			return array;
+		} // evaluate the basis functions
+		// shBasis is an Array[ 9 ]
+		;
+
+		SphericalHarmonics3.getBasisAt = function getBasisAt(normal, shBasis) {
+			// normal is assumed to be unit length
+			var x = normal.x,
+					y = normal.y,
+					z = normal.z; // band 0
+
+			shBasis[0] = 0.282095; // band 1
+
+			shBasis[1] = 0.488603 * y;
+			shBasis[2] = 0.488603 * z;
+			shBasis[3] = 0.488603 * x; // band 2
+
+			shBasis[4] = 1.092548 * x * y;
+			shBasis[5] = 1.092548 * y * z;
+			shBasis[6] = 0.315392 * (3 * z * z - 1);
+			shBasis[7] = 1.092548 * x * z;
+			shBasis[8] = 0.546274 * (x * x - y * y);
+		};
+
+		return SphericalHarmonics3;
+	}();
+
+	SphericalHarmonics3.prototype.isSphericalHarmonics3 = true;
+
+	var LightProbe = /*#__PURE__*/function (_Light) {
+		_inheritsLoose(LightProbe, _Light);
+
+		function LightProbe(sh, intensity) {
+			var _this;
+
+			if (sh === void 0) {
+				sh = new SphericalHarmonics3();
+			}
+
+			if (intensity === void 0) {
+				intensity = 1;
+			}
+
+			_this = _Light.call(this, undefined, intensity) || this;
+			_this.sh = sh;
+			return _this;
+		}
+
+		var _proto = LightProbe.prototype;
+
+		_proto.copy = function copy(source) {
+			_Light.prototype.copy.call(this, source);
+
+			this.sh.copy(source.sh);
+			return this;
+		};
+
+		_proto.fromJSON = function fromJSON(json) {
+			this.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();
+
+			this.sh.fromArray(json.sh);
+			return this;
+		};
+
+		_proto.toJSON = function toJSON(meta) {
+			var data = _Light.prototype.toJSON.call(this, meta);
+
+			data.object.sh = this.sh.toArray();
+			return data;
+		};
+
+		return LightProbe;
+	}(Light);
+
+	LightProbe.prototype.isLightProbe = true;
+
+	var MaterialLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(MaterialLoader, _Loader);
+
+		function MaterialLoader(manager) {
+			var _this;
+
+			_this = _Loader.call(this, manager) || this;
+			_this.textures = {};
+			return _this;
+		}
+
+		var _proto = MaterialLoader.prototype;
+
+		_proto.load = function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var loader = new FileLoader(scope.manager);
+			loader.setPath(scope.path);
+			loader.setRequestHeader(scope.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (text) {
+				try {
+					onLoad(scope.parse(JSON.parse(text)));
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
+
+					scope.manager.itemError(url);
+				}
+			}, onProgress, onError);
+		};
+
+		_proto.parse = function parse(json) {
+			var textures = this.textures;
+
+			function getTexture(name) {
+				if (textures[name] === undefined) {
+					console.warn('THREE.MaterialLoader: Undefined texture', name);
+				}
+
+				return textures[name];
+			}
+
+			var material = new Materials[json.type]();
+			if (json.uuid !== undefined) material.uuid = json.uuid;
+			if (json.name !== undefined) material.name = json.name;
+			if (json.color !== undefined && material.color !== undefined) material.color.setHex(json.color);
+			if (json.roughness !== undefined) material.roughness = json.roughness;
+			if (json.metalness !== undefined) material.metalness = json.metalness;
+			if (json.sheen !== undefined) material.sheen = new Color().setHex(json.sheen);
+			if (json.emissive !== undefined && material.emissive !== undefined) material.emissive.setHex(json.emissive);
+			if (json.specular !== undefined && material.specular !== undefined) material.specular.setHex(json.specular);
+			if (json.shininess !== undefined) material.shininess = json.shininess;
+			if (json.clearcoat !== undefined) material.clearcoat = json.clearcoat;
+			if (json.clearcoatRoughness !== undefined) material.clearcoatRoughness = json.clearcoatRoughness;
+			if (json.fog !== undefined) material.fog = json.fog;
+			if (json.flatShading !== undefined) material.flatShading = json.flatShading;
+			if (json.blending !== undefined) material.blending = json.blending;
+			if (json.combine !== undefined) material.combine = json.combine;
+			if (json.side !== undefined) material.side = json.side;
+			if (json.opacity !== undefined) material.opacity = json.opacity;
+			if (json.transparent !== undefined) material.transparent = json.transparent;
+			if (json.alphaTest !== undefined) material.alphaTest = json.alphaTest;
+			if (json.depthTest !== undefined) material.depthTest = json.depthTest;
+			if (json.depthWrite !== undefined) material.depthWrite = json.depthWrite;
+			if (json.colorWrite !== undefined) material.colorWrite = json.colorWrite;
+			if (json.stencilWrite !== undefined) material.stencilWrite = json.stencilWrite;
+			if (json.stencilWriteMask !== undefined) material.stencilWriteMask = json.stencilWriteMask;
+			if (json.stencilFunc !== undefined) material.stencilFunc = json.stencilFunc;
+			if (json.stencilRef !== undefined) material.stencilRef = json.stencilRef;
+			if (json.stencilFuncMask !== undefined) material.stencilFuncMask = json.stencilFuncMask;
+			if (json.stencilFail !== undefined) material.stencilFail = json.stencilFail;
+			if (json.stencilZFail !== undefined) material.stencilZFail = json.stencilZFail;
+			if (json.stencilZPass !== undefined) material.stencilZPass = json.stencilZPass;
+			if (json.wireframe !== undefined) material.wireframe = json.wireframe;
+			if (json.wireframeLinewidth !== undefined) material.wireframeLinewidth = json.wireframeLinewidth;
+			if (json.wireframeLinecap !== undefined) material.wireframeLinecap = json.wireframeLinecap;
+			if (json.wireframeLinejoin !== undefined) material.wireframeLinejoin = json.wireframeLinejoin;
+			if (json.rotation !== undefined) material.rotation = json.rotation;
+			if (json.linewidth !== 1) material.linewidth = json.linewidth;
+			if (json.dashSize !== undefined) material.dashSize = json.dashSize;
+			if (json.gapSize !== undefined) material.gapSize = json.gapSize;
+			if (json.scale !== undefined) material.scale = json.scale;
+			if (json.polygonOffset !== undefined) material.polygonOffset = json.polygonOffset;
+			if (json.polygonOffsetFactor !== undefined) material.polygonOffsetFactor = json.polygonOffsetFactor;
+			if (json.polygonOffsetUnits !== undefined) material.polygonOffsetUnits = json.polygonOffsetUnits;
+			if (json.skinning !== undefined) material.skinning = json.skinning;
+			if (json.morphTargets !== undefined) material.morphTargets = json.morphTargets;
+			if (json.morphNormals !== undefined) material.morphNormals = json.morphNormals;
+			if (json.dithering !== undefined) material.dithering = json.dithering;
+			if (json.vertexTangents !== undefined) material.vertexTangents = json.vertexTangents;
+			if (json.visible !== undefined) material.visible = json.visible;
+			if (json.toneMapped !== undefined) material.toneMapped = json.toneMapped;
+			if (json.userData !== undefined) material.userData = json.userData;
+
+			if (json.vertexColors !== undefined) {
+				if (typeof json.vertexColors === 'number') {
+					material.vertexColors = json.vertexColors > 0 ? true : false;
+				} else {
+					material.vertexColors = json.vertexColors;
+				}
+			} // Shader Material
+
+
+			if (json.uniforms !== undefined) {
+				for (var name in json.uniforms) {
+					var uniform = json.uniforms[name];
+					material.uniforms[name] = {};
+
+					switch (uniform.type) {
+						case 't':
+							material.uniforms[name].value = getTexture(uniform.value);
+							break;
+
+						case 'c':
+							material.uniforms[name].value = new Color().setHex(uniform.value);
+							break;
+
+						case 'v2':
+							material.uniforms[name].value = new Vector2().fromArray(uniform.value);
+							break;
+
+						case 'v3':
+							material.uniforms[name].value = new Vector3().fromArray(uniform.value);
+							break;
+
+						case 'v4':
+							material.uniforms[name].value = new Vector4().fromArray(uniform.value);
+							break;
+
+						case 'm3':
+							material.uniforms[name].value = new Matrix3().fromArray(uniform.value);
+							break;
+
+						case 'm4':
+							material.uniforms[name].value = new Matrix4().fromArray(uniform.value);
+							break;
+
+						default:
+							material.uniforms[name].value = uniform.value;
+					}
+				}
+			}
+
+			if (json.defines !== undefined) material.defines = json.defines;
+			if (json.vertexShader !== undefined) material.vertexShader = json.vertexShader;
+			if (json.fragmentShader !== undefined) material.fragmentShader = json.fragmentShader;
+
+			if (json.extensions !== undefined) {
+				for (var key in json.extensions) {
+					material.extensions[key] = json.extensions[key];
+				}
+			} // Deprecated
+
+
+			if (json.shading !== undefined) material.flatShading = json.shading === 1; // THREE.FlatShading
+			// for PointsMaterial
+
+			if (json.size !== undefined) material.size = json.size;
+			if (json.sizeAttenuation !== undefined) material.sizeAttenuation = json.sizeAttenuation; // maps
+
+			if (json.map !== undefined) material.map = getTexture(json.map);
+			if (json.matcap !== undefined) material.matcap = getTexture(json.matcap);
+			if (json.alphaMap !== undefined) material.alphaMap = getTexture(json.alphaMap);
+			if (json.bumpMap !== undefined) material.bumpMap = getTexture(json.bumpMap);
+			if (json.bumpScale !== undefined) material.bumpScale = json.bumpScale;
+			if (json.normalMap !== undefined) material.normalMap = getTexture(json.normalMap);
+			if (json.normalMapType !== undefined) material.normalMapType = json.normalMapType;
+
+			if (json.normalScale !== undefined) {
+				var normalScale = json.normalScale;
+
+				if (Array.isArray(normalScale) === false) {
+					// Blender exporter used to export a scalar. See #7459
+					normalScale = [normalScale, normalScale];
+				}
+
+				material.normalScale = new Vector2().fromArray(normalScale);
+			}
+
+			if (json.displacementMap !== undefined) material.displacementMap = getTexture(json.displacementMap);
+			if (json.displacementScale !== undefined) material.displacementScale = json.displacementScale;
+			if (json.displacementBias !== undefined) material.displacementBias = json.displacementBias;
+			if (json.roughnessMap !== undefined) material.roughnessMap = getTexture(json.roughnessMap);
+			if (json.metalnessMap !== undefined) material.metalnessMap = getTexture(json.metalnessMap);
+			if (json.emissiveMap !== undefined) material.emissiveMap = getTexture(json.emissiveMap);
+			if (json.emissiveIntensity !== undefined) material.emissiveIntensity = json.emissiveIntensity;
+			if (json.specularMap !== undefined) material.specularMap = getTexture(json.specularMap);
+			if (json.envMap !== undefined) material.envMap = getTexture(json.envMap);
+			if (json.envMapIntensity !== undefined) material.envMapIntensity = json.envMapIntensity;
+			if (json.reflectivity !== undefined) material.reflectivity = json.reflectivity;
+			if (json.refractionRatio !== undefined) material.refractionRatio = json.refractionRatio;
+			if (json.lightMap !== undefined) material.lightMap = getTexture(json.lightMap);
+			if (json.lightMapIntensity !== undefined) material.lightMapIntensity = json.lightMapIntensity;
+			if (json.aoMap !== undefined) material.aoMap = getTexture(json.aoMap);
+			if (json.aoMapIntensity !== undefined) material.aoMapIntensity = json.aoMapIntensity;
+			if (json.gradientMap !== undefined) material.gradientMap = getTexture(json.gradientMap);
+			if (json.clearcoatMap !== undefined) material.clearcoatMap = getTexture(json.clearcoatMap);
+			if (json.clearcoatRoughnessMap !== undefined) material.clearcoatRoughnessMap = getTexture(json.clearcoatRoughnessMap);
+			if (json.clearcoatNormalMap !== undefined) material.clearcoatNormalMap = getTexture(json.clearcoatNormalMap);
+			if (json.clearcoatNormalScale !== undefined) material.clearcoatNormalScale = new Vector2().fromArray(json.clearcoatNormalScale);
+			if (json.transmission !== undefined) material.transmission = json.transmission;
+			if (json.transmissionMap !== undefined) material.transmissionMap = getTexture(json.transmissionMap);
+			return material;
+		};
+
+		_proto.setTextures = function setTextures(value) {
+			this.textures = value;
+			return this;
+		};
+
+		return MaterialLoader;
+	}(Loader);
+
+	var LoaderUtils = {
+		decodeText: function decodeText(array) {
+			if (typeof TextDecoder !== 'undefined') {
+				return new TextDecoder().decode(array);
+			} // Avoid the String.fromCharCode.apply(null, array) shortcut, which
+			// throws a "maximum call stack size exceeded" error for large arrays.
+
+
+			var s = '';
+
+			for (var i = 0, il = array.length; i < il; i++) {
+				// Implicitly assumes little-endian.
+				s += String.fromCharCode(array[i]);
+			}
+
+			try {
+				// merges multi-byte utf-8 characters.
+				return decodeURIComponent(escape(s));
+			} catch (e) {
+				// see #16358
+				return s;
+			}
+		},
+		extractUrlBase: function extractUrlBase(url) {
+			var index = url.lastIndexOf('/');
+			if (index === -1) return './';
+			return url.substr(0, index + 1);
+		}
+	};
+
+	function InstancedBufferGeometry() {
+		BufferGeometry.call(this);
+		this.type = 'InstancedBufferGeometry';
+		this.instanceCount = Infinity;
+	}
+
+	InstancedBufferGeometry.prototype = Object.assign(Object.create(BufferGeometry.prototype), {
+		constructor: InstancedBufferGeometry,
+		isInstancedBufferGeometry: true,
+		copy: function copy(source) {
+			BufferGeometry.prototype.copy.call(this, source);
+			this.instanceCount = source.instanceCount;
+			return this;
+		},
+		clone: function clone() {
+			return new this.constructor().copy(this);
+		},
+		toJSON: function toJSON() {
+			var data = BufferGeometry.prototype.toJSON.call(this);
+			data.instanceCount = this.instanceCount;
+			data.isInstancedBufferGeometry = true;
+			return data;
+		}
+	});
+
+	function InstancedBufferAttribute(array, itemSize, normalized, meshPerAttribute) {
+		if (typeof normalized === 'number') {
+			meshPerAttribute = normalized;
+			normalized = false;
+			console.error('THREE.InstancedBufferAttribute: The constructor now expects normalized as the third argument.');
+		}
+
+		BufferAttribute.call(this, array, itemSize, normalized);
+		this.meshPerAttribute = meshPerAttribute || 1;
+	}
+
+	InstancedBufferAttribute.prototype = Object.assign(Object.create(BufferAttribute.prototype), {
+		constructor: InstancedBufferAttribute,
+		isInstancedBufferAttribute: true,
+		copy: function copy(source) {
+			BufferAttribute.prototype.copy.call(this, source);
+			this.meshPerAttribute = source.meshPerAttribute;
+			return this;
+		},
+		toJSON: function toJSON() {
+			var data = BufferAttribute.prototype.toJSON.call(this);
+			data.meshPerAttribute = this.meshPerAttribute;
+			data.isInstancedBufferAttribute = true;
+			return data;
+		}
+	});
+
+	var BufferGeometryLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(BufferGeometryLoader, _Loader);
+
+		function BufferGeometryLoader(manager) {
+			return _Loader.call(this, manager) || this;
+		}
+
+		var _proto = BufferGeometryLoader.prototype;
+
+		_proto.load = function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var loader = new FileLoader(scope.manager);
+			loader.setPath(scope.path);
+			loader.setRequestHeader(scope.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (text) {
+				try {
+					onLoad(scope.parse(JSON.parse(text)));
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
+
+					scope.manager.itemError(url);
+				}
+			}, onProgress, onError);
+		};
+
+		_proto.parse = function parse(json) {
+			var interleavedBufferMap = {};
+			var arrayBufferMap = {};
+
+			function getInterleavedBuffer(json, uuid) {
+				if (interleavedBufferMap[uuid] !== undefined) return interleavedBufferMap[uuid];
+				var interleavedBuffers = json.interleavedBuffers;
+				var interleavedBuffer = interleavedBuffers[uuid];
+				var buffer = getArrayBuffer(json, interleavedBuffer.buffer);
+				var array = getTypedArray(interleavedBuffer.type, buffer);
+				var ib = new InterleavedBuffer(array, interleavedBuffer.stride);
+				ib.uuid = interleavedBuffer.uuid;
+				interleavedBufferMap[uuid] = ib;
+				return ib;
+			}
+
+			function getArrayBuffer(json, uuid) {
+				if (arrayBufferMap[uuid] !== undefined) return arrayBufferMap[uuid];
+				var arrayBuffers = json.arrayBuffers;
+				var arrayBuffer = arrayBuffers[uuid];
+				var ab = new Uint32Array(arrayBuffer).buffer;
+				arrayBufferMap[uuid] = ab;
+				return ab;
+			}
+
+			var geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();
+			var index = json.data.index;
+
+			if (index !== undefined) {
+				var typedArray = getTypedArray(index.type, index.array);
+				geometry.setIndex(new BufferAttribute(typedArray, 1));
+			}
+
+			var attributes = json.data.attributes;
+
+			for (var key in attributes) {
+				var attribute = attributes[key];
+				var bufferAttribute = void 0;
+
+				if (attribute.isInterleavedBufferAttribute) {
+					var interleavedBuffer = getInterleavedBuffer(json.data, attribute.data);
+					bufferAttribute = new InterleavedBufferAttribute(interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized);
+				} else {
+					var _typedArray = getTypedArray(attribute.type, attribute.array);
+
+					var bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
+					bufferAttribute = new bufferAttributeConstr(_typedArray, attribute.itemSize, attribute.normalized);
+				}
+
+				if (attribute.name !== undefined) bufferAttribute.name = attribute.name;
+				geometry.setAttribute(key, bufferAttribute);
+			}
+
+			var morphAttributes = json.data.morphAttributes;
+
+			if (morphAttributes) {
+				for (var _key in morphAttributes) {
+					var attributeArray = morphAttributes[_key];
+					var array = [];
+
+					for (var i = 0, il = attributeArray.length; i < il; i++) {
+						var _attribute = attributeArray[i];
+
+						var _bufferAttribute = void 0;
+
+						if (_attribute.isInterleavedBufferAttribute) {
+							var _interleavedBuffer = getInterleavedBuffer(json.data, _attribute.data);
+
+							_bufferAttribute = new InterleavedBufferAttribute(_interleavedBuffer, _attribute.itemSize, _attribute.offset, _attribute.normalized);
+						} else {
+							var _typedArray2 = getTypedArray(_attribute.type, _attribute.array);
+
+							_bufferAttribute = new BufferAttribute(_typedArray2, _attribute.itemSize, _attribute.normalized);
+						}
+
+						if (_attribute.name !== undefined) _bufferAttribute.name = _attribute.name;
+						array.push(_bufferAttribute);
+					}
+
+					geometry.morphAttributes[_key] = array;
+				}
+			}
+
+			var morphTargetsRelative = json.data.morphTargetsRelative;
+
+			if (morphTargetsRelative) {
+				geometry.morphTargetsRelative = true;
+			}
+
+			var groups = json.data.groups || json.data.drawcalls || json.data.offsets;
+
+			if (groups !== undefined) {
+				for (var _i = 0, n = groups.length; _i !== n; ++_i) {
+					var group = groups[_i];
+					geometry.addGroup(group.start, group.count, group.materialIndex);
+				}
+			}
+
+			var boundingSphere = json.data.boundingSphere;
+
+			if (boundingSphere !== undefined) {
+				var center = new Vector3();
+
+				if (boundingSphere.center !== undefined) {
+					center.fromArray(boundingSphere.center);
+				}
+
+				geometry.boundingSphere = new Sphere(center, boundingSphere.radius);
+			}
+
+			if (json.name) geometry.name = json.name;
+			if (json.userData) geometry.userData = json.userData;
+			return geometry;
+		};
+
+		return BufferGeometryLoader;
+	}(Loader);
+
+	var ObjectLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(ObjectLoader, _Loader);
+
+		function ObjectLoader(manager) {
+			return _Loader.call(this, manager) || this;
+		}
+
+		var _proto = ObjectLoader.prototype;
+
+		_proto.load = function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var path = this.path === '' ? LoaderUtils.extractUrlBase(url) : this.path;
+			this.resourcePath = this.resourcePath || path;
+			var loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(this.withCredentials);
+			loader.load(url, function (text) {
+				var json = null;
+
+				try {
+					json = JSON.parse(text);
+				} catch (error) {
+					if (onError !== undefined) onError(error);
+					console.error('THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message);
+					return;
+				}
+
+				var metadata = json.metadata;
+
+				if (metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry') {
+					console.error('THREE.ObjectLoader: Can\'t load ' + url);
+					return;
+				}
+
+				scope.parse(json, onLoad);
+			}, onProgress, onError);
+		};
+
+		_proto.parse = function parse(json, onLoad) {
+			var animations = this.parseAnimations(json.animations);
+			var shapes = this.parseShapes(json.shapes);
+			var geometries = this.parseGeometries(json.geometries, shapes);
+			var images = this.parseImages(json.images, function () {
+				if (onLoad !== undefined) onLoad(object);
+			});
+			var textures = this.parseTextures(json.textures, images);
+			var materials = this.parseMaterials(json.materials, textures);
+			var object = this.parseObject(json.object, geometries, materials, animations);
+			var skeletons = this.parseSkeletons(json.skeletons, object);
+			this.bindSkeletons(object, skeletons); //
+
+			if (onLoad !== undefined) {
+				var hasImages = false;
+
+				for (var uuid in images) {
+					if (images[uuid] instanceof HTMLImageElement) {
+						hasImages = true;
+						break;
+					}
+				}
+
+				if (hasImages === false) onLoad(object);
+			}
+
+			return object;
+		};
+
+		_proto.parseShapes = function parseShapes(json) {
+			var shapes = {};
+
+			if (json !== undefined) {
+				for (var i = 0, l = json.length; i < l; i++) {
+					var shape = new Shape().fromJSON(json[i]);
+					shapes[shape.uuid] = shape;
+				}
+			}
+
+			return shapes;
+		};
+
+		_proto.parseSkeletons = function parseSkeletons(json, object) {
+			var skeletons = {};
+			var bones = {}; // generate bone lookup table
+
+			object.traverse(function (child) {
+				if (child.isBone) bones[child.uuid] = child;
+			}); // create skeletons
+
+			if (json !== undefined) {
+				for (var i = 0, l = json.length; i < l; i++) {
+					var skeleton = new Skeleton().fromJSON(json[i], bones);
+					skeletons[skeleton.uuid] = skeleton;
+				}
+			}
+
+			return skeletons;
+		};
+
+		_proto.parseGeometries = function parseGeometries(json, shapes) {
+			var geometries = {};
+			var geometryShapes;
+
+			if (json !== undefined) {
+				var bufferGeometryLoader = new BufferGeometryLoader();
+
+				for (var i = 0, l = json.length; i < l; i++) {
+					var geometry = void 0;
+					var data = json[i];
+
+					switch (data.type) {
+						case 'PlaneGeometry':
+						case 'PlaneBufferGeometry':
+							geometry = new Geometries[data.type](data.width, data.height, data.widthSegments, data.heightSegments);
+							break;
+
+						case 'BoxGeometry':
+						case 'BoxBufferGeometry':
+							geometry = new Geometries[data.type](data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments);
+							break;
+
+						case 'CircleGeometry':
+						case 'CircleBufferGeometry':
+							geometry = new Geometries[data.type](data.radius, data.segments, data.thetaStart, data.thetaLength);
+							break;
+
+						case 'CylinderGeometry':
+						case 'CylinderBufferGeometry':
+							geometry = new Geometries[data.type](data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
+							break;
+
+						case 'ConeGeometry':
+						case 'ConeBufferGeometry':
+							geometry = new Geometries[data.type](data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength);
+							break;
+
+						case 'SphereGeometry':
+						case 'SphereBufferGeometry':
+							geometry = new Geometries[data.type](data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength);
+							break;
+
+						case 'DodecahedronGeometry':
+						case 'DodecahedronBufferGeometry':
+						case 'IcosahedronGeometry':
+						case 'IcosahedronBufferGeometry':
+						case 'OctahedronGeometry':
+						case 'OctahedronBufferGeometry':
+						case 'TetrahedronGeometry':
+						case 'TetrahedronBufferGeometry':
+							geometry = new Geometries[data.type](data.radius, data.detail);
+							break;
+
+						case 'RingGeometry':
+						case 'RingBufferGeometry':
+							geometry = new Geometries[data.type](data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength);
+							break;
+
+						case 'TorusGeometry':
+						case 'TorusBufferGeometry':
+							geometry = new Geometries[data.type](data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc);
+							break;
+
+						case 'TorusKnotGeometry':
+						case 'TorusKnotBufferGeometry':
+							geometry = new Geometries[data.type](data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q);
+							break;
+
+						case 'TubeGeometry':
+						case 'TubeBufferGeometry':
+							// This only works for built-in curves (e.g. CatmullRomCurve3).
+							// User defined curves or instances of CurvePath will not be deserialized.
+							geometry = new Geometries[data.type](new Curves[data.path.type]().fromJSON(data.path), data.tubularSegments, data.radius, data.radialSegments, data.closed);
+							break;
+
+						case 'LatheGeometry':
+						case 'LatheBufferGeometry':
+							geometry = new Geometries[data.type](data.points, data.segments, data.phiStart, data.phiLength);
+							break;
+
+						case 'PolyhedronGeometry':
+						case 'PolyhedronBufferGeometry':
+							geometry = new Geometries[data.type](data.vertices, data.indices, data.radius, data.details);
+							break;
+
+						case 'ShapeGeometry':
+						case 'ShapeBufferGeometry':
+							geometryShapes = [];
+
+							for (var j = 0, jl = data.shapes.length; j < jl; j++) {
+								var shape = shapes[data.shapes[j]];
+								geometryShapes.push(shape);
+							}
+
+							geometry = new Geometries[data.type](geometryShapes, data.curveSegments);
+							break;
+
+						case 'ExtrudeGeometry':
+						case 'ExtrudeBufferGeometry':
+							geometryShapes = [];
+
+							for (var _j = 0, _jl = data.shapes.length; _j < _jl; _j++) {
+								var _shape = shapes[data.shapes[_j]];
+								geometryShapes.push(_shape);
+							}
+
+							var extrudePath = data.options.extrudePath;
+
+							if (extrudePath !== undefined) {
+								data.options.extrudePath = new Curves[extrudePath.type]().fromJSON(extrudePath);
+							}
+
+							geometry = new Geometries[data.type](geometryShapes, data.options);
+							break;
+
+						case 'BufferGeometry':
+						case 'InstancedBufferGeometry':
+							geometry = bufferGeometryLoader.parse(data);
+							break;
+
+						case 'Geometry':
+							console.error('THREE.ObjectLoader: Loading "Geometry" is not supported anymore.');
+							break;
+
+						default:
+							console.warn('THREE.ObjectLoader: Unsupported geometry type "' + data.type + '"');
+							continue;
+					}
+
+					geometry.uuid = data.uuid;
+					if (data.name !== undefined) geometry.name = data.name;
+					if (geometry.isBufferGeometry === true && data.userData !== undefined) geometry.userData = data.userData;
+					geometries[data.uuid] = geometry;
+				}
+			}
+
+			return geometries;
+		};
+
+		_proto.parseMaterials = function parseMaterials(json, textures) {
+			var cache = {}; // MultiMaterial
+
+			var materials = {};
+
+			if (json !== undefined) {
+				var loader = new MaterialLoader();
+				loader.setTextures(textures);
+
+				for (var i = 0, l = json.length; i < l; i++) {
+					var data = json[i];
+
+					if (data.type === 'MultiMaterial') {
+						// Deprecated
+						var array = [];
+
+						for (var j = 0; j < data.materials.length; j++) {
+							var material = data.materials[j];
+
+							if (cache[material.uuid] === undefined) {
+								cache[material.uuid] = loader.parse(material);
+							}
+
+							array.push(cache[material.uuid]);
+						}
+
+						materials[data.uuid] = array;
+					} else {
+						if (cache[data.uuid] === undefined) {
+							cache[data.uuid] = loader.parse(data);
+						}
+
+						materials[data.uuid] = cache[data.uuid];
+					}
+				}
+			}
+
+			return materials;
+		};
+
+		_proto.parseAnimations = function parseAnimations(json) {
+			var animations = {};
+
+			if (json !== undefined) {
+				for (var i = 0; i < json.length; i++) {
+					var data = json[i];
+					var clip = AnimationClip.parse(data);
+					animations[clip.uuid] = clip;
+				}
+			}
+
+			return animations;
+		};
+
+		_proto.parseImages = function parseImages(json, onLoad) {
+			var scope = this;
+			var images = {};
+			var loader;
+
+			function loadImage(url) {
+				scope.manager.itemStart(url);
+				return loader.load(url, function () {
+					scope.manager.itemEnd(url);
+				}, undefined, function () {
+					scope.manager.itemError(url);
+					scope.manager.itemEnd(url);
+				});
+			}
+
+			function deserializeImage(image) {
+				if (typeof image === 'string') {
+					var url = image;
+					var path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test(url) ? url : scope.resourcePath + url;
+					return loadImage(path);
+				} else {
+					if (image.data) {
+						return {
+							data: getTypedArray(image.type, image.data),
+							width: image.width,
+							height: image.height
+						};
+					} else {
+						return null;
+					}
+				}
+			}
+
+			if (json !== undefined && json.length > 0) {
+				var manager = new LoadingManager(onLoad);
+				loader = new ImageLoader(manager);
+				loader.setCrossOrigin(this.crossOrigin);
+
+				for (var i = 0, il = json.length; i < il; i++) {
+					var image = json[i];
+					var url = image.url;
+
+					if (Array.isArray(url)) {
+						// load array of images e.g CubeTexture
+						images[image.uuid] = [];
+
+						for (var j = 0, jl = url.length; j < jl; j++) {
+							var currentUrl = url[j];
+							var deserializedImage = deserializeImage(currentUrl);
+
+							if (deserializedImage !== null) {
+								if (deserializedImage instanceof HTMLImageElement) {
+									images[image.uuid].push(deserializedImage);
+								} else {
+									// special case: handle array of data textures for cube textures
+									images[image.uuid].push(new DataTexture(deserializedImage.data, deserializedImage.width, deserializedImage.height));
+								}
+							}
+						}
+					} else {
+						// load single image
+						var _deserializedImage = deserializeImage(image.url);
+
+						if (_deserializedImage !== null) {
+							images[image.uuid] = _deserializedImage;
+						}
+					}
+				}
+			}
+
+			return images;
+		};
+
+		_proto.parseTextures = function parseTextures(json, images) {
+			function parseConstant(value, type) {
+				if (typeof value === 'number') return value;
+				console.warn('THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value);
+				return type[value];
+			}
+
+			var textures = {};
+
+			if (json !== undefined) {
+				for (var i = 0, l = json.length; i < l; i++) {
+					var data = json[i];
+
+					if (data.image === undefined) {
+						console.warn('THREE.ObjectLoader: No "image" specified for', data.uuid);
+					}
+
+					if (images[data.image] === undefined) {
+						console.warn('THREE.ObjectLoader: Undefined image', data.image);
+					}
+
+					var texture = void 0;
+					var image = images[data.image];
+
+					if (Array.isArray(image)) {
+						texture = new CubeTexture(image);
+						if (image.length === 6) texture.needsUpdate = true;
+					} else {
+						if (image && image.data) {
+							texture = new DataTexture(image.data, image.width, image.height);
+						} else {
+							texture = new Texture(image);
+						}
+
+						if (image) texture.needsUpdate = true; // textures can have undefined image data
+					}
+
+					texture.uuid = data.uuid;
+					if (data.name !== undefined) texture.name = data.name;
+					if (data.mapping !== undefined) texture.mapping = parseConstant(data.mapping, TEXTURE_MAPPING);
+					if (data.offset !== undefined) texture.offset.fromArray(data.offset);
+					if (data.repeat !== undefined) texture.repeat.fromArray(data.repeat);
+					if (data.center !== undefined) texture.center.fromArray(data.center);
+					if (data.rotation !== undefined) texture.rotation = data.rotation;
+
+					if (data.wrap !== undefined) {
+						texture.wrapS = parseConstant(data.wrap[0], TEXTURE_WRAPPING);
+						texture.wrapT = parseConstant(data.wrap[1], TEXTURE_WRAPPING);
+					}
+
+					if (data.format !== undefined) texture.format = data.format;
+					if (data.type !== undefined) texture.type = data.type;
+					if (data.encoding !== undefined) texture.encoding = data.encoding;
+					if (data.minFilter !== undefined) texture.minFilter = parseConstant(data.minFilter, TEXTURE_FILTER);
+					if (data.magFilter !== undefined) texture.magFilter = parseConstant(data.magFilter, TEXTURE_FILTER);
+					if (data.anisotropy !== undefined) texture.anisotropy = data.anisotropy;
+					if (data.flipY !== undefined) texture.flipY = data.flipY;
+					if (data.premultiplyAlpha !== undefined) texture.premultiplyAlpha = data.premultiplyAlpha;
+					if (data.unpackAlignment !== undefined) texture.unpackAlignment = data.unpackAlignment;
+					textures[data.uuid] = texture;
+				}
+			}
+
+			return textures;
+		};
+
+		_proto.parseObject = function parseObject(data, geometries, materials, animations) {
+			var object;
+
+			function getGeometry(name) {
+				if (geometries[name] === undefined) {
+					console.warn('THREE.ObjectLoader: Undefined geometry', name);
+				}
+
+				return geometries[name];
+			}
+
+			function getMaterial(name) {
+				if (name === undefined) return undefined;
+
+				if (Array.isArray(name)) {
+					var array = [];
+
+					for (var i = 0, l = name.length; i < l; i++) {
+						var uuid = name[i];
+
+						if (materials[uuid] === undefined) {
+							console.warn('THREE.ObjectLoader: Undefined material', uuid);
+						}
+
+						array.push(materials[uuid]);
+					}
+
+					return array;
+				}
+
+				if (materials[name] === undefined) {
+					console.warn('THREE.ObjectLoader: Undefined material', name);
+				}
+
+				return materials[name];
+			}
+
+			var geometry, material;
+
+			switch (data.type) {
+				case 'Scene':
+					object = new Scene();
+
+					if (data.background !== undefined) {
+						if (Number.isInteger(data.background)) {
+							object.background = new Color(data.background);
+						}
+					}
+
+					if (data.fog !== undefined) {
+						if (data.fog.type === 'Fog') {
+							object.fog = new Fog(data.fog.color, data.fog.near, data.fog.far);
+						} else if (data.fog.type === 'FogExp2') {
+							object.fog = new FogExp2(data.fog.color, data.fog.density);
+						}
+					}
+
+					break;
+
+				case 'PerspectiveCamera':
+					object = new PerspectiveCamera(data.fov, data.aspect, data.near, data.far);
+					if (data.focus !== undefined) object.focus = data.focus;
+					if (data.zoom !== undefined) object.zoom = data.zoom;
+					if (data.filmGauge !== undefined) object.filmGauge = data.filmGauge;
+					if (data.filmOffset !== undefined) object.filmOffset = data.filmOffset;
+					if (data.view !== undefined) object.view = Object.assign({}, data.view);
+					break;
+
+				case 'OrthographicCamera':
+					object = new OrthographicCamera(data.left, data.right, data.top, data.bottom, data.near, data.far);
+					if (data.zoom !== undefined) object.zoom = data.zoom;
+					if (data.view !== undefined) object.view = Object.assign({}, data.view);
+					break;
+
+				case 'AmbientLight':
+					object = new AmbientLight(data.color, data.intensity);
+					break;
+
+				case 'DirectionalLight':
+					object = new DirectionalLight(data.color, data.intensity);
+					break;
+
+				case 'PointLight':
+					object = new PointLight(data.color, data.intensity, data.distance, data.decay);
+					break;
+
+				case 'RectAreaLight':
+					object = new RectAreaLight(data.color, data.intensity, data.width, data.height);
+					break;
+
+				case 'SpotLight':
+					object = new SpotLight(data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay);
+					break;
+
+				case 'HemisphereLight':
+					object = new HemisphereLight(data.color, data.groundColor, data.intensity);
+					break;
+
+				case 'LightProbe':
+					object = new LightProbe().fromJSON(data);
+					break;
+
+				case 'SkinnedMesh':
+					geometry = getGeometry(data.geometry);
+					material = getMaterial(data.material);
+					object = new SkinnedMesh(geometry, material);
+					if (data.bindMode !== undefined) object.bindMode = data.bindMode;
+					if (data.bindMatrix !== undefined) object.bindMatrix.fromArray(data.bindMatrix);
+					if (data.skeleton !== undefined) object.skeleton = data.skeleton;
+					break;
+
+				case 'Mesh':
+					geometry = getGeometry(data.geometry);
+					material = getMaterial(data.material);
+					object = new Mesh(geometry, material);
+					break;
+
+				case 'InstancedMesh':
+					geometry = getGeometry(data.geometry);
+					material = getMaterial(data.material);
+					var count = data.count;
+					var instanceMatrix = data.instanceMatrix;
+					object = new InstancedMesh(geometry, material, count);
+					object.instanceMatrix = new BufferAttribute(new Float32Array(instanceMatrix.array), 16);
+					break;
+
+				case 'LOD':
+					object = new LOD();
+					break;
+
+				case 'Line':
+					object = new Line(getGeometry(data.geometry), getMaterial(data.material));
+					break;
+
+				case 'LineLoop':
+					object = new LineLoop(getGeometry(data.geometry), getMaterial(data.material));
+					break;
+
+				case 'LineSegments':
+					object = new LineSegments(getGeometry(data.geometry), getMaterial(data.material));
+					break;
+
+				case 'PointCloud':
+				case 'Points':
+					object = new Points(getGeometry(data.geometry), getMaterial(data.material));
+					break;
+
+				case 'Sprite':
+					object = new Sprite(getMaterial(data.material));
+					break;
+
+				case 'Group':
+					object = new Group();
+					break;
+
+				case 'Bone':
+					object = new Bone();
+					break;
+
+				default:
+					object = new Object3D();
+			}
+
+			object.uuid = data.uuid;
+			if (data.name !== undefined) object.name = data.name;
+
+			if (data.matrix !== undefined) {
+				object.matrix.fromArray(data.matrix);
+				if (data.matrixAutoUpdate !== undefined) object.matrixAutoUpdate = data.matrixAutoUpdate;
+				if (object.matrixAutoUpdate) object.matrix.decompose(object.position, object.quaternion, object.scale);
+			} else {
+				if (data.position !== undefined) object.position.fromArray(data.position);
+				if (data.rotation !== undefined) object.rotation.fromArray(data.rotation);
+				if (data.quaternion !== undefined) object.quaternion.fromArray(data.quaternion);
+				if (data.scale !== undefined) object.scale.fromArray(data.scale);
+			}
+
+			if (data.castShadow !== undefined) object.castShadow = data.castShadow;
+			if (data.receiveShadow !== undefined) object.receiveShadow = data.receiveShadow;
+
+			if (data.shadow) {
+				if (data.shadow.bias !== undefined) object.shadow.bias = data.shadow.bias;
+				if (data.shadow.normalBias !== undefined) object.shadow.normalBias = data.shadow.normalBias;
+				if (data.shadow.radius !== undefined) object.shadow.radius = data.shadow.radius;
+				if (data.shadow.mapSize !== undefined) object.shadow.mapSize.fromArray(data.shadow.mapSize);
+				if (data.shadow.camera !== undefined) object.shadow.camera = this.parseObject(data.shadow.camera);
+			}
+
+			if (data.visible !== undefined) object.visible = data.visible;
+			if (data.frustumCulled !== undefined) object.frustumCulled = data.frustumCulled;
+			if (data.renderOrder !== undefined) object.renderOrder = data.renderOrder;
+			if (data.userData !== undefined) object.userData = data.userData;
+			if (data.layers !== undefined) object.layers.mask = data.layers;
+
+			if (data.children !== undefined) {
+				var children = data.children;
+
+				for (var i = 0; i < children.length; i++) {
+					object.add(this.parseObject(children[i], geometries, materials, animations));
+				}
+			}
+
+			if (data.animations !== undefined) {
+				var objectAnimations = data.animations;
+
+				for (var _i = 0; _i < objectAnimations.length; _i++) {
+					var uuid = objectAnimations[_i];
+					object.animations.push(animations[uuid]);
+				}
+			}
+
+			if (data.type === 'LOD') {
+				if (data.autoUpdate !== undefined) object.autoUpdate = data.autoUpdate;
+				var levels = data.levels;
+
+				for (var l = 0; l < levels.length; l++) {
+					var level = levels[l];
+					var child = object.getObjectByProperty('uuid', level.object);
+
+					if (child !== undefined) {
+						object.addLevel(child, level.distance);
+					}
+				}
+			}
+
+			return object;
+		};
+
+		_proto.bindSkeletons = function bindSkeletons(object, skeletons) {
+			if (Object.keys(skeletons).length === 0) return;
+			object.traverse(function (child) {
+				if (child.isSkinnedMesh === true && child.skeleton !== undefined) {
+					var skeleton = skeletons[child.skeleton];
+
+					if (skeleton === undefined) {
+						console.warn('THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton);
+					} else {
+						child.bind(skeleton, child.bindMatrix);
+					}
+				}
+			});
+		}
+		/* DEPRECATED */
+		;
+
+		_proto.setTexturePath = function setTexturePath(value) {
+			console.warn('THREE.ObjectLoader: .setTexturePath() has been renamed to .setResourcePath().');
+			return this.setResourcePath(value);
+		};
+
+		return ObjectLoader;
+	}(Loader);
+
+	var TEXTURE_MAPPING = {
+		UVMapping: UVMapping,
+		CubeReflectionMapping: CubeReflectionMapping,
+		CubeRefractionMapping: CubeRefractionMapping,
+		EquirectangularReflectionMapping: EquirectangularReflectionMapping,
+		EquirectangularRefractionMapping: EquirectangularRefractionMapping,
+		CubeUVReflectionMapping: CubeUVReflectionMapping,
+		CubeUVRefractionMapping: CubeUVRefractionMapping
+	};
+	var TEXTURE_WRAPPING = {
+		RepeatWrapping: RepeatWrapping,
+		ClampToEdgeWrapping: ClampToEdgeWrapping,
+		MirroredRepeatWrapping: MirroredRepeatWrapping
+	};
+	var TEXTURE_FILTER = {
+		NearestFilter: NearestFilter,
+		NearestMipmapNearestFilter: NearestMipmapNearestFilter,
+		NearestMipmapLinearFilter: NearestMipmapLinearFilter,
+		LinearFilter: LinearFilter,
+		LinearMipmapNearestFilter: LinearMipmapNearestFilter,
+		LinearMipmapLinearFilter: LinearMipmapLinearFilter
+	};
+
+	function ImageBitmapLoader(manager) {
+		if (typeof createImageBitmap === 'undefined') {
+			console.warn('THREE.ImageBitmapLoader: createImageBitmap() not supported.');
+		}
+
+		if (typeof fetch === 'undefined') {
+			console.warn('THREE.ImageBitmapLoader: fetch() not supported.');
+		}
+
+		Loader.call(this, manager);
+		this.options = {
+			premultiplyAlpha: 'none'
+		};
+	}
+
+	ImageBitmapLoader.prototype = Object.assign(Object.create(Loader.prototype), {
+		constructor: ImageBitmapLoader,
+		isImageBitmapLoader: true,
+		setOptions: function setOptions(options) {
+			this.options = options;
+			return this;
+		},
+		load: function load(url, onLoad, onProgress, onError) {
+			if (url === undefined) url = '';
+			if (this.path !== undefined) url = this.path + url;
+			url = this.manager.resolveURL(url);
+			var scope = this;
+			var cached = Cache.get(url);
+
+			if (cached !== undefined) {
+				scope.manager.itemStart(url);
+				setTimeout(function () {
+					if (onLoad) onLoad(cached);
+					scope.manager.itemEnd(url);
+				}, 0);
+				return cached;
+			}
+
+			var fetchOptions = {};
+			fetchOptions.credentials = this.crossOrigin === 'anonymous' ? 'same-origin' : 'include';
+			fetchOptions.headers = this.requestHeader;
+			fetch(url, fetchOptions).then(function (res) {
+				return res.blob();
+			}).then(function (blob) {
+				return createImageBitmap(blob, Object.assign(scope.options, {
+					colorSpaceConversion: 'none'
+				}));
+			}).then(function (imageBitmap) {
+				Cache.add(url, imageBitmap);
+				if (onLoad) onLoad(imageBitmap);
+				scope.manager.itemEnd(url);
+			}).catch(function (e) {
+				if (onError) onError(e);
+				scope.manager.itemError(url);
+				scope.manager.itemEnd(url);
+			});
+			scope.manager.itemStart(url);
+		}
+	});
+
+	var ShapePath = /*#__PURE__*/function () {
+		function ShapePath() {
+			this.type = 'ShapePath';
+			this.color = new Color();
+			this.subPaths = [];
+			this.currentPath = null;
+		}
+
+		var _proto = ShapePath.prototype;
+
+		_proto.moveTo = function moveTo(x, y) {
+			this.currentPath = new Path();
+			this.subPaths.push(this.currentPath);
+			this.currentPath.moveTo(x, y);
+			return this;
+		};
+
+		_proto.lineTo = function lineTo(x, y) {
+			this.currentPath.lineTo(x, y);
+			return this;
+		};
+
+		_proto.quadraticCurveTo = function quadraticCurveTo(aCPx, aCPy, aX, aY) {
+			this.currentPath.quadraticCurveTo(aCPx, aCPy, aX, aY);
+			return this;
+		};
+
+		_proto.bezierCurveTo = function bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY) {
+			this.currentPath.bezierCurveTo(aCP1x, aCP1y, aCP2x, aCP2y, aX, aY);
+			return this;
+		};
+
+		_proto.splineThru = function splineThru(pts) {
+			this.currentPath.splineThru(pts);
+			return this;
+		};
+
+		_proto.toShapes = function toShapes(isCCW, noHoles) {
+			function toShapesNoHoles(inSubpaths) {
+				var shapes = [];
+
+				for (var i = 0, l = inSubpaths.length; i < l; i++) {
+					var _tmpPath = inSubpaths[i];
+
+					var _tmpShape = new Shape();
+
+					_tmpShape.curves = _tmpPath.curves;
+					shapes.push(_tmpShape);
+				}
+
+				return shapes;
+			}
+
+			function isPointInsidePolygon(inPt, inPolygon) {
+				var polyLen = inPolygon.length; // inPt on polygon contour => immediate success		or
+				// toggling of inside/outside at every single! intersection point of an edge
+				//	with the horizontal line through inPt, left of inPt
+				//	not counting lowerY endpoints of edges and whole edges on that line
+
+				var inside = false;
+
+				for (var p = polyLen - 1, q = 0; q < polyLen; p = q++) {
+					var edgeLowPt = inPolygon[p];
+					var edgeHighPt = inPolygon[q];
+					var edgeDx = edgeHighPt.x - edgeLowPt.x;
+					var edgeDy = edgeHighPt.y - edgeLowPt.y;
+
+					if (Math.abs(edgeDy) > Number.EPSILON) {
+						// not parallel
+						if (edgeDy < 0) {
+							edgeLowPt = inPolygon[q];
+							edgeDx = -edgeDx;
+							edgeHighPt = inPolygon[p];
+							edgeDy = -edgeDy;
+						}
+
+						if (inPt.y < edgeLowPt.y || inPt.y > edgeHighPt.y) continue;
+
+						if (inPt.y === edgeLowPt.y) {
+							if (inPt.x === edgeLowPt.x) return true; // inPt is on contour ?
+							// continue;				// no intersection or edgeLowPt => doesn't count !!!
+						} else {
+							var perpEdge = edgeDy * (inPt.x - edgeLowPt.x) - edgeDx * (inPt.y - edgeLowPt.y);
+							if (perpEdge === 0) return true; // inPt is on contour ?
+
+							if (perpEdge < 0) continue;
+							inside = !inside; // true intersection left of inPt
+						}
+					} else {
+						// parallel or collinear
+						if (inPt.y !== edgeLowPt.y) continue; // parallel
+						// edge lies on the same horizontal line as inPt
+
+						if (edgeHighPt.x <= inPt.x && inPt.x <= edgeLowPt.x || edgeLowPt.x <= inPt.x && inPt.x <= edgeHighPt.x) return true; // inPt: Point on contour !
+						// continue;
+					}
+				}
+
+				return inside;
+			}
+
+			var isClockWise = ShapeUtils.isClockWise;
+			var subPaths = this.subPaths;
+			if (subPaths.length === 0) return [];
+			if (noHoles === true) return toShapesNoHoles(subPaths);
+			var solid, tmpPath, tmpShape;
+			var shapes = [];
+
+			if (subPaths.length === 1) {
+				tmpPath = subPaths[0];
+				tmpShape = new Shape();
+				tmpShape.curves = tmpPath.curves;
+				shapes.push(tmpShape);
+				return shapes;
+			}
+
+			var holesFirst = !isClockWise(subPaths[0].getPoints());
+			holesFirst = isCCW ? !holesFirst : holesFirst; // console.log("Holes first", holesFirst);
+
+			var betterShapeHoles = [];
+			var newShapes = [];
+			var newShapeHoles = [];
+			var mainIdx = 0;
+			var tmpPoints;
+			newShapes[mainIdx] = undefined;
+			newShapeHoles[mainIdx] = [];
+
+			for (var i = 0, l = subPaths.length; i < l; i++) {
+				tmpPath = subPaths[i];
+				tmpPoints = tmpPath.getPoints();
+				solid = isClockWise(tmpPoints);
+				solid = isCCW ? !solid : solid;
+
+				if (solid) {
+					if (!holesFirst && newShapes[mainIdx]) mainIdx++;
+					newShapes[mainIdx] = {
+						s: new Shape(),
+						p: tmpPoints
+					};
+					newShapes[mainIdx].s.curves = tmpPath.curves;
+					if (holesFirst) mainIdx++;
+					newShapeHoles[mainIdx] = []; //console.log('cw', i);
+				} else {
+					newShapeHoles[mainIdx].push({
+						h: tmpPath,
+						p: tmpPoints[0]
+					}); //console.log('ccw', i);
+				}
+			} // only Holes? -> probably all Shapes with wrong orientation
+
+
+			if (!newShapes[0]) return toShapesNoHoles(subPaths);
+
+			if (newShapes.length > 1) {
+				var ambiguous = false;
+				var toChange = [];
+
+				for (var sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx++) {
+					betterShapeHoles[sIdx] = [];
+				}
+
+				for (var _sIdx = 0, _sLen = newShapes.length; _sIdx < _sLen; _sIdx++) {
+					var sho = newShapeHoles[_sIdx];
+
+					for (var hIdx = 0; hIdx < sho.length; hIdx++) {
+						var ho = sho[hIdx];
+						var hole_unassigned = true;
+
+						for (var s2Idx = 0; s2Idx < newShapes.length; s2Idx++) {
+							if (isPointInsidePolygon(ho.p, newShapes[s2Idx].p)) {
+								if (_sIdx !== s2Idx) toChange.push({
+									froms: _sIdx,
+									tos: s2Idx,
+									hole: hIdx
+								});
+
+								if (hole_unassigned) {
+									hole_unassigned = false;
+									betterShapeHoles[s2Idx].push(ho);
+								} else {
+									ambiguous = true;
+								}
+							}
+						}
+
+						if (hole_unassigned) {
+							betterShapeHoles[_sIdx].push(ho);
+						}
+					}
+				} // console.log("ambiguous: ", ambiguous);
+
+
+				if (toChange.length > 0) {
+					// console.log("to change: ", toChange);
+					if (!ambiguous) newShapeHoles = betterShapeHoles;
+				}
+			}
+
+			var tmpHoles;
+
+			for (var _i = 0, il = newShapes.length; _i < il; _i++) {
+				tmpShape = newShapes[_i].s;
+				shapes.push(tmpShape);
+				tmpHoles = newShapeHoles[_i];
+
+				for (var j = 0, jl = tmpHoles.length; j < jl; j++) {
+					tmpShape.holes.push(tmpHoles[j].h);
+				}
+			} //console.log("shape", shapes);
+
+
+			return shapes;
+		};
+
+		return ShapePath;
+	}();
+
+	var Font = /*#__PURE__*/function () {
+		function Font(data) {
+			this.type = 'Font';
+			this.data = data;
+		}
+
+		var _proto = Font.prototype;
+
+		_proto.generateShapes = function generateShapes(text, size) {
+			if (size === void 0) {
+				size = 100;
+			}
+
+			var shapes = [];
+			var paths = createPaths(text, size, this.data);
+
+			for (var p = 0, pl = paths.length; p < pl; p++) {
+				Array.prototype.push.apply(shapes, paths[p].toShapes());
+			}
+
+			return shapes;
+		};
+
+		return Font;
+	}();
+
+	function createPaths(text, size, data) {
+		var chars = Array.from(text);
+		var scale = size / data.resolution;
+		var line_height = (data.boundingBox.yMax - data.boundingBox.yMin + data.underlineThickness) * scale;
+		var paths = [];
+		var offsetX = 0,
+				offsetY = 0;
+
+		for (var i = 0; i < chars.length; i++) {
+			var char = chars[i];
+
+			if (char === '\n') {
+				offsetX = 0;
+				offsetY -= line_height;
+			} else {
+				var ret = createPath(char, scale, offsetX, offsetY, data);
+				offsetX += ret.offsetX;
+				paths.push(ret.path);
+			}
+		}
+
+		return paths;
+	}
+
+	function createPath(char, scale, offsetX, offsetY, data) {
+		var glyph = data.glyphs[char] || data.glyphs['?'];
+
+		if (!glyph) {
+			console.error('THREE.Font: character "' + char + '" does not exists in font family ' + data.familyName + '.');
+			return;
+		}
+
+		var path = new ShapePath();
+		var x, y, cpx, cpy, cpx1, cpy1, cpx2, cpy2;
+
+		if (glyph.o) {
+			var outline = glyph._cachedOutline || (glyph._cachedOutline = glyph.o.split(' '));
+
+			for (var i = 0, l = outline.length; i < l;) {
+				var action = outline[i++];
+
+				switch (action) {
+					case 'm':
+						// moveTo
+						x = outline[i++] * scale + offsetX;
+						y = outline[i++] * scale + offsetY;
+						path.moveTo(x, y);
+						break;
+
+					case 'l':
+						// lineTo
+						x = outline[i++] * scale + offsetX;
+						y = outline[i++] * scale + offsetY;
+						path.lineTo(x, y);
+						break;
+
+					case 'q':
+						// quadraticCurveTo
+						cpx = outline[i++] * scale + offsetX;
+						cpy = outline[i++] * scale + offsetY;
+						cpx1 = outline[i++] * scale + offsetX;
+						cpy1 = outline[i++] * scale + offsetY;
+						path.quadraticCurveTo(cpx1, cpy1, cpx, cpy);
+						break;
+
+					case 'b':
+						// bezierCurveTo
+						cpx = outline[i++] * scale + offsetX;
+						cpy = outline[i++] * scale + offsetY;
+						cpx1 = outline[i++] * scale + offsetX;
+						cpy1 = outline[i++] * scale + offsetY;
+						cpx2 = outline[i++] * scale + offsetX;
+						cpy2 = outline[i++] * scale + offsetY;
+						path.bezierCurveTo(cpx1, cpy1, cpx2, cpy2, cpx, cpy);
+						break;
+				}
+			}
+		}
+
+		return {
+			offsetX: glyph.ha * scale,
+			path: path
+		};
+	}
+
+	Font.prototype.isFont = true;
+
+	var FontLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(FontLoader, _Loader);
+
+		function FontLoader(manager) {
+			return _Loader.call(this, manager) || this;
+		}
+
+		var _proto = FontLoader.prototype;
+
+		_proto.load = function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var loader = new FileLoader(this.manager);
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(scope.withCredentials);
+			loader.load(url, function (text) {
+				var json;
+
+				try {
+					json = JSON.parse(text);
+				} catch (e) {
+					console.warn('THREE.FontLoader: typeface.js support is being deprecated. Use typeface.json instead.');
+					json = JSON.parse(text.substring(65, text.length - 2));
+				}
+
+				var font = scope.parse(json);
+				if (onLoad) onLoad(font);
+			}, onProgress, onError);
+		};
+
+		_proto.parse = function parse(json) {
+			return new Font(json);
+		};
+
+		return FontLoader;
+	}(Loader);
+
+	var _context;
+
+	var AudioContext = {
+		getContext: function getContext() {
+			if (_context === undefined) {
+				_context = new (window.AudioContext || window.webkitAudioContext)();
+			}
+
+			return _context;
+		},
+		setContext: function setContext(value) {
+			_context = value;
+		}
+	};
+
+	var AudioLoader = /*#__PURE__*/function (_Loader) {
+		_inheritsLoose(AudioLoader, _Loader);
+
+		function AudioLoader(manager) {
+			return _Loader.call(this, manager) || this;
+		}
+
+		var _proto = AudioLoader.prototype;
+
+		_proto.load = function load(url, onLoad, onProgress, onError) {
+			var scope = this;
+			var loader = new FileLoader(this.manager);
+			loader.setResponseType('arraybuffer');
+			loader.setPath(this.path);
+			loader.setRequestHeader(this.requestHeader);
+			loader.setWithCredentials(this.withCredentials);
+			loader.load(url, function (buffer) {
+				try {
+					// Create a copy of the buffer. The `decodeAudioData` method
+					// detaches the buffer when complete, preventing reuse.
+					var bufferCopy = buffer.slice(0);
+					var context = AudioContext.getContext();
+					context.decodeAudioData(bufferCopy, function (audioBuffer) {
+						onLoad(audioBuffer);
+					});
+				} catch (e) {
+					if (onError) {
+						onError(e);
+					} else {
+						console.error(e);
+					}
+
+					scope.manager.itemError(url);
+				}
+			}, onProgress, onError);
+		};
+
+		return AudioLoader;
+	}(Loader);
+
+	var HemisphereLightProbe = /*#__PURE__*/function (_LightProbe) {
+		_inheritsLoose(HemisphereLightProbe, _LightProbe);
+
+		function HemisphereLightProbe(skyColor, groundColor, intensity) {
+			var _this;
+
+			if (intensity === void 0) {
+				intensity = 1;
+			}
+
+			_this = _LightProbe.call(this, undefined, intensity) || this;
+			var color1 = new Color().set(skyColor);
+			var color2 = new Color().set(groundColor);
+			var sky = new Vector3(color1.r, color1.g, color1.b);
+			var ground = new Vector3(color2.r, color2.g, color2.b); // without extra factor of PI in the shader, should = 1 / Math.sqrt( Math.PI );
+
+			var c0 = Math.sqrt(Math.PI);
+			var c1 = c0 * Math.sqrt(0.75);
+
+			_this.sh.coefficients[0].copy(sky).add(ground).multiplyScalar(c0);
+
+			_this.sh.coefficients[1].copy(sky).sub(ground).multiplyScalar(c1);
+
+			return _this;
+		}
+
+		return HemisphereLightProbe;
+	}(LightProbe);
+
+	HemisphereLightProbe.prototype.isHemisphereLightProbe = true;
+
+	var AmbientLightProbe = /*#__PURE__*/function (_LightProbe) {
+		_inheritsLoose(AmbientLightProbe, _LightProbe);
+
+		function AmbientLightProbe(color, intensity) {
+			var _this;
+
+			if (intensity === void 0) {
+				intensity = 1;
+			}
+
+			_this = _LightProbe.call(this, undefined, intensity) || this;
+			var color1 = new Color().set(color); // without extra factor of PI in the shader, would be 2 / Math.sqrt( Math.PI );
+
+			_this.sh.coefficients[0].set(color1.r, color1.g, color1.b).multiplyScalar(2 * Math.sqrt(Math.PI));
+
+			return _this;
+		}
+
+		return AmbientLightProbe;
+	}(LightProbe);
+
+	AmbientLightProbe.prototype.isAmbientLightProbe = true;
+
+	var _eyeRight = new Matrix4();
+
+	var _eyeLeft = new Matrix4();
+
+	var StereoCamera = /*#__PURE__*/function () {
+		function StereoCamera() {
+			this.type = 'StereoCamera';
+			this.aspect = 1;
+			this.eyeSep = 0.064;
+			this.cameraL = new PerspectiveCamera();
+			this.cameraL.layers.enable(1);
+			this.cameraL.matrixAutoUpdate = false;
+			this.cameraR = new PerspectiveCamera();
+			this.cameraR.layers.enable(2);
+			this.cameraR.matrixAutoUpdate = false;
+			this._cache = {
+				focus: null,
+				fov: null,
+				aspect: null,
+				near: null,
+				far: null,
+				zoom: null,
+				eyeSep: null
+			};
+		}
+
+		var _proto = StereoCamera.prototype;
+
+		_proto.update = function update(camera) {
+			var cache = this._cache;
+			var needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov || cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near || cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;
+
+			if (needsUpdate) {
+				cache.focus = camera.focus;
+				cache.fov = camera.fov;
+				cache.aspect = camera.aspect * this.aspect;
+				cache.near = camera.near;
+				cache.far = camera.far;
+				cache.zoom = camera.zoom;
+				cache.eyeSep = this.eyeSep; // Off-axis stereoscopic effect based on
+				// http://paulbourke.net/stereographics/stereorender/
+
+				var projectionMatrix = camera.projectionMatrix.clone();
+				var eyeSepHalf = cache.eyeSep / 2;
+				var eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
+				var ymax = cache.near * Math.tan(MathUtils.DEG2RAD * cache.fov * 0.5) / cache.zoom;
+				var xmin, xmax; // translate xOffset
+
+				_eyeLeft.elements[12] = -eyeSepHalf;
+				_eyeRight.elements[12] = eyeSepHalf; // for left eye
+
+				xmin = -ymax * cache.aspect + eyeSepOnProjection;
+				xmax = ymax * cache.aspect + eyeSepOnProjection;
+				projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
+				projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
+				this.cameraL.projectionMatrix.copy(projectionMatrix); // for right eye
+
+				xmin = -ymax * cache.aspect - eyeSepOnProjection;
+				xmax = ymax * cache.aspect - eyeSepOnProjection;
+				projectionMatrix.elements[0] = 2 * cache.near / (xmax - xmin);
+				projectionMatrix.elements[8] = (xmax + xmin) / (xmax - xmin);
+				this.cameraR.projectionMatrix.copy(projectionMatrix);
+			}
+
+			this.cameraL.matrixWorld.copy(camera.matrixWorld).multiply(_eyeLeft);
+			this.cameraR.matrixWorld.copy(camera.matrixWorld).multiply(_eyeRight);
+		};
+
+		return StereoCamera;
+	}();
+
+	var Clock = /*#__PURE__*/function () {
+		function Clock(autoStart) {
+			this.autoStart = autoStart !== undefined ? autoStart : true;
+			this.startTime = 0;
+			this.oldTime = 0;
+			this.elapsedTime = 0;
+			this.running = false;
+		}
+
+		var _proto = Clock.prototype;
+
+		_proto.start = function start() {
+			this.startTime = now();
+			this.oldTime = this.startTime;
+			this.elapsedTime = 0;
+			this.running = true;
+		};
+
+		_proto.stop = function stop() {
+			this.getElapsedTime();
+			this.running = false;
+			this.autoStart = false;
+		};
+
+		_proto.getElapsedTime = function getElapsedTime() {
+			this.getDelta();
+			return this.elapsedTime;
+		};
+
+		_proto.getDelta = function getDelta() {
+			var diff = 0;
+
+			if (this.autoStart && !this.running) {
+				this.start();
+				return 0;
+			}
+
+			if (this.running) {
+				var newTime = now();
+				diff = (newTime - this.oldTime) / 1000;
+				this.oldTime = newTime;
+				this.elapsedTime += diff;
+			}
+
+			return diff;
+		};
+
+		return Clock;
+	}();
+
+	function now() {
+		return (typeof performance === 'undefined' ? Date : performance).now(); // see #10732
+	}
+
+	var _position$2 = /*@__PURE__*/new Vector3();
+
+	var _quaternion$3 = /*@__PURE__*/new Quaternion();
+
+	var _scale$1 = /*@__PURE__*/new Vector3();
+
+	var _orientation = /*@__PURE__*/new Vector3();
+
+	var AudioListener = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(AudioListener, _Object3D);
+
+		function AudioListener() {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'AudioListener';
+			_this.context = AudioContext.getContext();
+			_this.gain = _this.context.createGain();
+
+			_this.gain.connect(_this.context.destination);
+
+			_this.filter = null;
+			_this.timeDelta = 0; // private
+
+			_this._clock = new Clock();
+			return _this;
+		}
+
+		var _proto = AudioListener.prototype;
+
+		_proto.getInput = function getInput() {
+			return this.gain;
+		};
+
+		_proto.removeFilter = function removeFilter() {
+			if (this.filter !== null) {
+				this.gain.disconnect(this.filter);
+				this.filter.disconnect(this.context.destination);
+				this.gain.connect(this.context.destination);
+				this.filter = null;
+			}
+
+			return this;
+		};
+
+		_proto.getFilter = function getFilter() {
+			return this.filter;
+		};
+
+		_proto.setFilter = function setFilter(value) {
+			if (this.filter !== null) {
+				this.gain.disconnect(this.filter);
+				this.filter.disconnect(this.context.destination);
+			} else {
+				this.gain.disconnect(this.context.destination);
+			}
+
+			this.filter = value;
+			this.gain.connect(this.filter);
+			this.filter.connect(this.context.destination);
+			return this;
+		};
+
+		_proto.getMasterVolume = function getMasterVolume() {
+			return this.gain.gain.value;
+		};
+
+		_proto.setMasterVolume = function setMasterVolume(value) {
+			this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
+			return this;
+		};
+
+		_proto.updateMatrixWorld = function updateMatrixWorld(force) {
+			_Object3D.prototype.updateMatrixWorld.call(this, force);
+
+			var listener = this.context.listener;
+			var up = this.up;
+			this.timeDelta = this._clock.getDelta();
+			this.matrixWorld.decompose(_position$2, _quaternion$3, _scale$1);
+
+			_orientation.set(0, 0, -1).applyQuaternion(_quaternion$3);
+
+			if (listener.positionX) {
+				// code path for Chrome (see #14393)
+				var endTime = this.context.currentTime + this.timeDelta;
+				listener.positionX.linearRampToValueAtTime(_position$2.x, endTime);
+				listener.positionY.linearRampToValueAtTime(_position$2.y, endTime);
+				listener.positionZ.linearRampToValueAtTime(_position$2.z, endTime);
+				listener.forwardX.linearRampToValueAtTime(_orientation.x, endTime);
+				listener.forwardY.linearRampToValueAtTime(_orientation.y, endTime);
+				listener.forwardZ.linearRampToValueAtTime(_orientation.z, endTime);
+				listener.upX.linearRampToValueAtTime(up.x, endTime);
+				listener.upY.linearRampToValueAtTime(up.y, endTime);
+				listener.upZ.linearRampToValueAtTime(up.z, endTime);
+			} else {
+				listener.setPosition(_position$2.x, _position$2.y, _position$2.z);
+				listener.setOrientation(_orientation.x, _orientation.y, _orientation.z, up.x, up.y, up.z);
+			}
+		};
+
+		return AudioListener;
+	}(Object3D);
+
+	var Audio = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(Audio, _Object3D);
+
+		function Audio(listener) {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'Audio';
+			_this.listener = listener;
+			_this.context = listener.context;
+			_this.gain = _this.context.createGain();
+
+			_this.gain.connect(listener.getInput());
+
+			_this.autoplay = false;
+			_this.buffer = null;
+			_this.detune = 0;
+			_this.loop = false;
+			_this.loopStart = 0;
+			_this.loopEnd = 0;
+			_this.offset = 0;
+			_this.duration = undefined;
+			_this.playbackRate = 1;
+			_this.isPlaying = false;
+			_this.hasPlaybackControl = true;
+			_this.source = null;
+			_this.sourceType = 'empty';
+			_this._startedAt = 0;
+			_this._progress = 0;
+			_this._connected = false;
+			_this.filters = [];
+			return _this;
+		}
+
+		var _proto = Audio.prototype;
+
+		_proto.getOutput = function getOutput() {
+			return this.gain;
+		};
+
+		_proto.setNodeSource = function setNodeSource(audioNode) {
+			this.hasPlaybackControl = false;
+			this.sourceType = 'audioNode';
+			this.source = audioNode;
+			this.connect();
+			return this;
+		};
+
+		_proto.setMediaElementSource = function setMediaElementSource(mediaElement) {
+			this.hasPlaybackControl = false;
+			this.sourceType = 'mediaNode';
+			this.source = this.context.createMediaElementSource(mediaElement);
+			this.connect();
+			return this;
+		};
+
+		_proto.setMediaStreamSource = function setMediaStreamSource(mediaStream) {
+			this.hasPlaybackControl = false;
+			this.sourceType = 'mediaStreamNode';
+			this.source = this.context.createMediaStreamSource(mediaStream);
+			this.connect();
+			return this;
+		};
+
+		_proto.setBuffer = function setBuffer(audioBuffer) {
+			this.buffer = audioBuffer;
+			this.sourceType = 'buffer';
+			if (this.autoplay) this.play();
+			return this;
+		};
+
+		_proto.play = function play(delay) {
+			if (delay === void 0) {
+				delay = 0;
+			}
+
+			if (this.isPlaying === true) {
+				console.warn('THREE.Audio: Audio is already playing.');
+				return;
+			}
+
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
+
+			this._startedAt = this.context.currentTime + delay;
+			var source = this.context.createBufferSource();
+			source.buffer = this.buffer;
+			source.loop = this.loop;
+			source.loopStart = this.loopStart;
+			source.loopEnd = this.loopEnd;
+			source.onended = this.onEnded.bind(this);
+			source.start(this._startedAt, this._progress + this.offset, this.duration);
+			this.isPlaying = true;
+			this.source = source;
+			this.setDetune(this.detune);
+			this.setPlaybackRate(this.playbackRate);
+			return this.connect();
+		};
+
+		_proto.pause = function pause() {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
+
+			if (this.isPlaying === true) {
+				// update current progress
+				this._progress += Math.max(this.context.currentTime - this._startedAt, 0) * this.playbackRate;
+
+				if (this.loop === true) {
+					// ensure _progress does not exceed duration with looped audios
+					this._progress = this._progress % (this.duration || this.buffer.duration);
+				}
+
+				this.source.stop();
+				this.source.onended = null;
+				this.isPlaying = false;
+			}
+
+			return this;
+		};
+
+		_proto.stop = function stop() {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
+
+			this._progress = 0;
+			this.source.stop();
+			this.source.onended = null;
+			this.isPlaying = false;
+			return this;
+		};
+
+		_proto.connect = function connect() {
+			if (this.filters.length > 0) {
+				this.source.connect(this.filters[0]);
+
+				for (var i = 1, l = this.filters.length; i < l; i++) {
+					this.filters[i - 1].connect(this.filters[i]);
+				}
+
+				this.filters[this.filters.length - 1].connect(this.getOutput());
+			} else {
+				this.source.connect(this.getOutput());
+			}
+
+			this._connected = true;
+			return this;
+		};
+
+		_proto.disconnect = function disconnect() {
+			if (this.filters.length > 0) {
+				this.source.disconnect(this.filters[0]);
+
+				for (var i = 1, l = this.filters.length; i < l; i++) {
+					this.filters[i - 1].disconnect(this.filters[i]);
+				}
+
+				this.filters[this.filters.length - 1].disconnect(this.getOutput());
+			} else {
+				this.source.disconnect(this.getOutput());
+			}
+
+			this._connected = false;
+			return this;
+		};
+
+		_proto.getFilters = function getFilters() {
+			return this.filters;
+		};
+
+		_proto.setFilters = function setFilters(value) {
+			if (!value) value = [];
+
+			if (this._connected === true) {
+				this.disconnect();
+				this.filters = value.slice();
+				this.connect();
+			} else {
+				this.filters = value.slice();
+			}
+
+			return this;
+		};
+
+		_proto.setDetune = function setDetune(value) {
+			this.detune = value;
+			if (this.source.detune === undefined) return; // only set detune when available
+
+			if (this.isPlaying === true) {
+				this.source.detune.setTargetAtTime(this.detune, this.context.currentTime, 0.01);
+			}
+
+			return this;
+		};
+
+		_proto.getDetune = function getDetune() {
+			return this.detune;
+		};
+
+		_proto.getFilter = function getFilter() {
+			return this.getFilters()[0];
+		};
+
+		_proto.setFilter = function setFilter(filter) {
+			return this.setFilters(filter ? [filter] : []);
+		};
+
+		_proto.setPlaybackRate = function setPlaybackRate(value) {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
+
+			this.playbackRate = value;
+
+			if (this.isPlaying === true) {
+				this.source.playbackRate.setTargetAtTime(this.playbackRate, this.context.currentTime, 0.01);
+			}
+
+			return this;
+		};
+
+		_proto.getPlaybackRate = function getPlaybackRate() {
+			return this.playbackRate;
+		};
+
+		_proto.onEnded = function onEnded() {
+			this.isPlaying = false;
+		};
+
+		_proto.getLoop = function getLoop() {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return false;
+			}
+
+			return this.loop;
+		};
+
+		_proto.setLoop = function setLoop(value) {
+			if (this.hasPlaybackControl === false) {
+				console.warn('THREE.Audio: this Audio has no playback control.');
+				return;
+			}
+
+			this.loop = value;
+
+			if (this.isPlaying === true) {
+				this.source.loop = this.loop;
+			}
+
+			return this;
+		};
+
+		_proto.setLoopStart = function setLoopStart(value) {
+			this.loopStart = value;
+			return this;
+		};
+
+		_proto.setLoopEnd = function setLoopEnd(value) {
+			this.loopEnd = value;
+			return this;
+		};
+
+		_proto.getVolume = function getVolume() {
+			return this.gain.gain.value;
+		};
+
+		_proto.setVolume = function setVolume(value) {
+			this.gain.gain.setTargetAtTime(value, this.context.currentTime, 0.01);
+			return this;
+		};
+
+		return Audio;
+	}(Object3D);
+
+	var _position$3 = /*@__PURE__*/new Vector3();
+
+	var _quaternion$4 = /*@__PURE__*/new Quaternion();
+
+	var _scale$2 = /*@__PURE__*/new Vector3();
+
+	var _orientation$1 = /*@__PURE__*/new Vector3();
+
+	var PositionalAudio = /*#__PURE__*/function (_Audio) {
+		_inheritsLoose(PositionalAudio, _Audio);
+
+		function PositionalAudio(listener) {
+			var _this;
+
+			_this = _Audio.call(this, listener) || this;
+			_this.panner = _this.context.createPanner();
+			_this.panner.panningModel = 'HRTF';
+
+			_this.panner.connect(_this.gain);
+
+			return _this;
+		}
+
+		var _proto = PositionalAudio.prototype;
+
+		_proto.getOutput = function getOutput() {
+			return this.panner;
+		};
+
+		_proto.getRefDistance = function getRefDistance() {
+			return this.panner.refDistance;
+		};
+
+		_proto.setRefDistance = function setRefDistance(value) {
+			this.panner.refDistance = value;
+			return this;
+		};
+
+		_proto.getRolloffFactor = function getRolloffFactor() {
+			return this.panner.rolloffFactor;
+		};
+
+		_proto.setRolloffFactor = function setRolloffFactor(value) {
+			this.panner.rolloffFactor = value;
+			return this;
+		};
+
+		_proto.getDistanceModel = function getDistanceModel() {
+			return this.panner.distanceModel;
+		};
+
+		_proto.setDistanceModel = function setDistanceModel(value) {
+			this.panner.distanceModel = value;
+			return this;
+		};
+
+		_proto.getMaxDistance = function getMaxDistance() {
+			return this.panner.maxDistance;
+		};
+
+		_proto.setMaxDistance = function setMaxDistance(value) {
+			this.panner.maxDistance = value;
+			return this;
+		};
+
+		_proto.setDirectionalCone = function setDirectionalCone(coneInnerAngle, coneOuterAngle, coneOuterGain) {
+			this.panner.coneInnerAngle = coneInnerAngle;
+			this.panner.coneOuterAngle = coneOuterAngle;
+			this.panner.coneOuterGain = coneOuterGain;
+			return this;
+		};
+
+		_proto.updateMatrixWorld = function updateMatrixWorld(force) {
+			_Audio.prototype.updateMatrixWorld.call(this, force);
+
+			if (this.hasPlaybackControl === true && this.isPlaying === false) return;
+			this.matrixWorld.decompose(_position$3, _quaternion$4, _scale$2);
+
+			_orientation$1.set(0, 0, 1).applyQuaternion(_quaternion$4);
+
+			var panner = this.panner;
+
+			if (panner.positionX) {
+				// code path for Chrome and Firefox (see #14393)
+				var endTime = this.context.currentTime + this.listener.timeDelta;
+				panner.positionX.linearRampToValueAtTime(_position$3.x, endTime);
+				panner.positionY.linearRampToValueAtTime(_position$3.y, endTime);
+				panner.positionZ.linearRampToValueAtTime(_position$3.z, endTime);
+				panner.orientationX.linearRampToValueAtTime(_orientation$1.x, endTime);
+				panner.orientationY.linearRampToValueAtTime(_orientation$1.y, endTime);
+				panner.orientationZ.linearRampToValueAtTime(_orientation$1.z, endTime);
+			} else {
+				panner.setPosition(_position$3.x, _position$3.y, _position$3.z);
+				panner.setOrientation(_orientation$1.x, _orientation$1.y, _orientation$1.z);
+			}
+		};
+
+		return PositionalAudio;
+	}(Audio);
+
+	var AudioAnalyser = /*#__PURE__*/function () {
+		function AudioAnalyser(audio, fftSize) {
+			if (fftSize === void 0) {
+				fftSize = 2048;
+			}
+
+			this.analyser = audio.context.createAnalyser();
+			this.analyser.fftSize = fftSize;
+			this.data = new Uint8Array(this.analyser.frequencyBinCount);
+			audio.getOutput().connect(this.analyser);
+		}
+
+		var _proto = AudioAnalyser.prototype;
+
+		_proto.getFrequencyData = function getFrequencyData() {
+			this.analyser.getByteFrequencyData(this.data);
+			return this.data;
+		};
+
+		_proto.getAverageFrequency = function getAverageFrequency() {
+			var value = 0;
+			var data = this.getFrequencyData();
+
+			for (var i = 0; i < data.length; i++) {
+				value += data[i];
+			}
+
+			return value / data.length;
+		};
+
+		return AudioAnalyser;
+	}();
+
+	var PropertyMixer = /*#__PURE__*/function () {
+		function PropertyMixer(binding, typeName, valueSize) {
+			this.binding = binding;
+			this.valueSize = valueSize;
+			var mixFunction, mixFunctionAdditive, setIdentity; // buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]
+			//
+			// interpolators can use .buffer as their .result
+			// the data then goes to 'incoming'
+			//
+			// 'accu0' and 'accu1' are used frame-interleaved for
+			// the cumulative result and are compared to detect
+			// changes
+			//
+			// 'orig' stores the original state of the property
+			//
+			// 'add' is used for additive cumulative results
+			//
+			// 'work' is optional and is only present for quaternion types. It is used
+			// to store intermediate quaternion multiplication results
+
+			switch (typeName) {
+				case 'quaternion':
+					mixFunction = this._slerp;
+					mixFunctionAdditive = this._slerpAdditive;
+					setIdentity = this._setAdditiveIdentityQuaternion;
+					this.buffer = new Float64Array(valueSize * 6);
+					this._workIndex = 5;
+					break;
+
+				case 'string':
+				case 'bool':
+					mixFunction = this._select; // Use the regular mix function and for additive on these types,
+					// additive is not relevant for non-numeric types
+
+					mixFunctionAdditive = this._select;
+					setIdentity = this._setAdditiveIdentityOther;
+					this.buffer = new Array(valueSize * 5);
+					break;
+
+				default:
+					mixFunction = this._lerp;
+					mixFunctionAdditive = this._lerpAdditive;
+					setIdentity = this._setAdditiveIdentityNumeric;
+					this.buffer = new Float64Array(valueSize * 5);
+			}
+
+			this._mixBufferRegion = mixFunction;
+			this._mixBufferRegionAdditive = mixFunctionAdditive;
+			this._setIdentity = setIdentity;
+			this._origIndex = 3;
+			this._addIndex = 4;
+			this.cumulativeWeight = 0;
+			this.cumulativeWeightAdditive = 0;
+			this.useCount = 0;
+			this.referenceCount = 0;
+		} // accumulate data in the 'incoming' region into 'accu<i>'
+
+
+		var _proto = PropertyMixer.prototype;
+
+		_proto.accumulate = function accumulate(accuIndex, weight) {
+			// note: happily accumulating nothing when weight = 0, the caller knows
+			// the weight and shouldn't have made the call in the first place
+			var buffer = this.buffer,
+					stride = this.valueSize,
+					offset = accuIndex * stride + stride;
+			var currentWeight = this.cumulativeWeight;
+
+			if (currentWeight === 0) {
+				// accuN := incoming * weight
+				for (var i = 0; i !== stride; ++i) {
+					buffer[offset + i] = buffer[i];
+				}
+
+				currentWeight = weight;
+			} else {
+				// accuN := accuN + incoming * weight
+				currentWeight += weight;
+				var mix = weight / currentWeight;
+
+				this._mixBufferRegion(buffer, offset, 0, mix, stride);
+			}
+
+			this.cumulativeWeight = currentWeight;
+		} // accumulate data in the 'incoming' region into 'add'
+		;
+
+		_proto.accumulateAdditive = function accumulateAdditive(weight) {
+			var buffer = this.buffer,
+					stride = this.valueSize,
+					offset = stride * this._addIndex;
+
+			if (this.cumulativeWeightAdditive === 0) {
+				// add = identity
+				this._setIdentity();
+			} // add := add + incoming * weight
+
+
+			this._mixBufferRegionAdditive(buffer, offset, 0, weight, stride);
+
+			this.cumulativeWeightAdditive += weight;
+		} // apply the state of 'accu<i>' to the binding when accus differ
+		;
+
+		_proto.apply = function apply(accuIndex) {
+			var stride = this.valueSize,
+					buffer = this.buffer,
+					offset = accuIndex * stride + stride,
+					weight = this.cumulativeWeight,
+					weightAdditive = this.cumulativeWeightAdditive,
+					binding = this.binding;
+			this.cumulativeWeight = 0;
+			this.cumulativeWeightAdditive = 0;
+
+			if (weight < 1) {
+				// accuN := accuN + original * ( 1 - cumulativeWeight )
+				var originalValueOffset = stride * this._origIndex;
+
+				this._mixBufferRegion(buffer, offset, originalValueOffset, 1 - weight, stride);
+			}
+
+			if (weightAdditive > 0) {
+				// accuN := accuN + additive accuN
+				this._mixBufferRegionAdditive(buffer, offset, this._addIndex * stride, 1, stride);
+			}
+
+			for (var i = stride, e = stride + stride; i !== e; ++i) {
+				if (buffer[i] !== buffer[i + stride]) {
+					// value has changed -> update scene graph
+					binding.setValue(buffer, offset);
+					break;
+				}
+			}
+		} // remember the state of the bound property and copy it to both accus
+		;
+
+		_proto.saveOriginalState = function saveOriginalState() {
+			var binding = this.binding;
+			var buffer = this.buffer,
+					stride = this.valueSize,
+					originalValueOffset = stride * this._origIndex;
+			binding.getValue(buffer, originalValueOffset); // accu[0..1] := orig -- initially detect changes against the original
+
+			for (var i = stride, e = originalValueOffset; i !== e; ++i) {
+				buffer[i] = buffer[originalValueOffset + i % stride];
+			} // Add to identity for additive
+
+
+			this._setIdentity();
+
+			this.cumulativeWeight = 0;
+			this.cumulativeWeightAdditive = 0;
+		} // apply the state previously taken via 'saveOriginalState' to the binding
+		;
+
+		_proto.restoreOriginalState = function restoreOriginalState() {
+			var originalValueOffset = this.valueSize * 3;
+			this.binding.setValue(this.buffer, originalValueOffset);
+		};
+
+		_proto._setAdditiveIdentityNumeric = function _setAdditiveIdentityNumeric() {
+			var startIndex = this._addIndex * this.valueSize;
+			var endIndex = startIndex + this.valueSize;
+
+			for (var i = startIndex; i < endIndex; i++) {
+				this.buffer[i] = 0;
+			}
+		};
+
+		_proto._setAdditiveIdentityQuaternion = function _setAdditiveIdentityQuaternion() {
+			this._setAdditiveIdentityNumeric();
+
+			this.buffer[this._addIndex * this.valueSize + 3] = 1;
+		};
+
+		_proto._setAdditiveIdentityOther = function _setAdditiveIdentityOther() {
+			var startIndex = this._origIndex * this.valueSize;
+			var targetIndex = this._addIndex * this.valueSize;
+
+			for (var i = 0; i < this.valueSize; i++) {
+				this.buffer[targetIndex + i] = this.buffer[startIndex + i];
+			}
+		} // mix functions
+		;
+
+		_proto._select = function _select(buffer, dstOffset, srcOffset, t, stride) {
+			if (t >= 0.5) {
+				for (var i = 0; i !== stride; ++i) {
+					buffer[dstOffset + i] = buffer[srcOffset + i];
+				}
+			}
+		};
+
+		_proto._slerp = function _slerp(buffer, dstOffset, srcOffset, t) {
+			Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t);
+		};
+
+		_proto._slerpAdditive = function _slerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
+			var workOffset = this._workIndex * stride; // Store result in intermediate buffer offset
+
+			Quaternion.multiplyQuaternionsFlat(buffer, workOffset, buffer, dstOffset, buffer, srcOffset); // Slerp to the intermediate result
+
+			Quaternion.slerpFlat(buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t);
+		};
+
+		_proto._lerp = function _lerp(buffer, dstOffset, srcOffset, t, stride) {
+			var s = 1 - t;
+
+			for (var i = 0; i !== stride; ++i) {
+				var j = dstOffset + i;
+				buffer[j] = buffer[j] * s + buffer[srcOffset + i] * t;
+			}
+		};
+
+		_proto._lerpAdditive = function _lerpAdditive(buffer, dstOffset, srcOffset, t, stride) {
+			for (var i = 0; i !== stride; ++i) {
+				var j = dstOffset + i;
+				buffer[j] = buffer[j] + buffer[srcOffset + i] * t;
+			}
+		};
+
+		return PropertyMixer;
+	}();
+
+	// Characters [].:/ are reserved for track binding syntax.
+	var _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
+
+	var _reservedRe = new RegExp('[' + _RESERVED_CHARS_RE + ']', 'g'); // Attempts to allow node names from any language. ES5's `\w` regexp matches
+	// only latin characters, and the unicode \p{L} is not yet supported. So
+	// instead, we exclude reserved characters and match everything else.
+
+
+	var _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
+
+	var _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace('\\.', '') + ']'; // Parent directories, delimited by '/' or ':'. Currently unused, but must
+	// be matched to parse the rest of the track name.
+
+
+	var _directoryRe = /((?:WC+[\/:])*)/.source.replace('WC', _wordChar); // Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.
+
+
+	var _nodeRe = /(WCOD+)?/.source.replace('WCOD', _wordCharOrDot); // Object on target node, and accessor. May not contain reserved
+	// characters. Accessor may contain any character except closing bracket.
+
+
+	var _objectRe = /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace('WC', _wordChar); // Property and accessor. May not contain reserved characters. Accessor may
+	// contain any non-bracket characters.
+
+
+	var _propertyRe = /\.(WC+)(?:\[(.+)\])?/.source.replace('WC', _wordChar);
+
+	var _trackRe = new RegExp('' + '^' + _directoryRe + _nodeRe + _objectRe + _propertyRe + '$');
+
+	var _supportedObjectNames = ['material', 'materials', 'bones'];
+
+	function Composite(targetGroup, path, optionalParsedPath) {
+		var parsedPath = optionalParsedPath || PropertyBinding.parseTrackName(path);
+		this._targetGroup = targetGroup;
+		this._bindings = targetGroup.subscribe_(path, parsedPath);
+	}
+
+	Object.assign(Composite.prototype, {
+		getValue: function getValue(array, offset) {
+			this.bind(); // bind all binding
+
+			var firstValidIndex = this._targetGroup.nCachedObjects_,
+					binding = this._bindings[firstValidIndex]; // and only call .getValue on the first
+
+			if (binding !== undefined) binding.getValue(array, offset);
+		},
+		setValue: function setValue(array, offset) {
+			var bindings = this._bindings;
+
+			for (var i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
+				bindings[i].setValue(array, offset);
+			}
+		},
+		bind: function bind() {
+			var bindings = this._bindings;
+
+			for (var i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
+				bindings[i].bind();
+			}
+		},
+		unbind: function unbind() {
+			var bindings = this._bindings;
+
+			for (var i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++i) {
+				bindings[i].unbind();
+			}
+		}
+	});
+
+	function PropertyBinding(rootNode, path, parsedPath) {
+		this.path = path;
+		this.parsedPath = parsedPath || PropertyBinding.parseTrackName(path);
+		this.node = PropertyBinding.findNode(rootNode, this.parsedPath.nodeName) || rootNode;
+		this.rootNode = rootNode;
+	}
+
+	Object.assign(PropertyBinding, {
+		Composite: Composite,
+		create: function create(root, path, parsedPath) {
+			if (!(root && root.isAnimationObjectGroup)) {
+				return new PropertyBinding(root, path, parsedPath);
+			} else {
+				return new PropertyBinding.Composite(root, path, parsedPath);
+			}
+		},
+
+		/**
+		 * Replaces spaces with underscores and removes unsupported characters from
+		 * node names, to ensure compatibility with parseTrackName().
+		 *
+		 * @param {string} name Node name to be sanitized.
+		 * @return {string}
+		 */
+		sanitizeNodeName: function sanitizeNodeName(name) {
+			return name.replace(/\s/g, '_').replace(_reservedRe, '');
+		},
+		parseTrackName: function parseTrackName(trackName) {
+			var matches = _trackRe.exec(trackName);
+
+			if (!matches) {
+				throw new Error('PropertyBinding: Cannot parse trackName: ' + trackName);
+			}
+
+			var results = {
+				// directoryName: matches[ 1 ], // (tschw) currently unused
+				nodeName: matches[2],
+				objectName: matches[3],
+				objectIndex: matches[4],
+				propertyName: matches[5],
+				// required
+				propertyIndex: matches[6]
+			};
+			var lastDot = results.nodeName && results.nodeName.lastIndexOf('.');
+
+			if (lastDot !== undefined && lastDot !== -1) {
+				var objectName = results.nodeName.substring(lastDot + 1); // Object names must be checked against an allowlist. Otherwise, there
+				// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
+				// 'bar' could be the objectName, or part of a nodeName (which can
+				// include '.' characters).
+
+				if (_supportedObjectNames.indexOf(objectName) !== -1) {
+					results.nodeName = results.nodeName.substring(0, lastDot);
+					results.objectName = objectName;
+				}
+			}
+
+			if (results.propertyName === null || results.propertyName.length === 0) {
+				throw new Error('PropertyBinding: can not parse propertyName from trackName: ' + trackName);
+			}
+
+			return results;
+		},
+		findNode: function findNode(root, nodeName) {
+			if (!nodeName || nodeName === '' || nodeName === '.' || nodeName === -1 || nodeName === root.name || nodeName === root.uuid) {
+				return root;
+			} // search into skeleton bones.
+
+
+			if (root.skeleton) {
+				var bone = root.skeleton.getBoneByName(nodeName);
+
+				if (bone !== undefined) {
+					return bone;
+				}
+			} // search into node subtree.
+
+
+			if (root.children) {
+				var searchNodeSubtree = function searchNodeSubtree(children) {
+					for (var i = 0; i < children.length; i++) {
+						var childNode = children[i];
+
+						if (childNode.name === nodeName || childNode.uuid === nodeName) {
+							return childNode;
+						}
+
+						var result = searchNodeSubtree(childNode.children);
+						if (result) return result;
+					}
+
+					return null;
+				};
+
+				var subTreeNode = searchNodeSubtree(root.children);
+
+				if (subTreeNode) {
+					return subTreeNode;
+				}
+			}
+
+			return null;
+		}
+	});
+	Object.assign(PropertyBinding.prototype, {
+		// prototype, continued
+		// these are used to "bind" a nonexistent property
+		_getValue_unavailable: function _getValue_unavailable() {},
+		_setValue_unavailable: function _setValue_unavailable() {},
+		BindingType: {
+			Direct: 0,
+			EntireArray: 1,
+			ArrayElement: 2,
+			HasFromToArray: 3
+		},
+		Versioning: {
+			None: 0,
+			NeedsUpdate: 1,
+			MatrixWorldNeedsUpdate: 2
+		},
+		GetterByBindingType: [function getValue_direct(buffer, offset) {
+			buffer[offset] = this.node[this.propertyName];
+		}, function getValue_array(buffer, offset) {
+			var source = this.resolvedProperty;
+
+			for (var i = 0, n = source.length; i !== n; ++i) {
+				buffer[offset++] = source[i];
+			}
+		}, function getValue_arrayElement(buffer, offset) {
+			buffer[offset] = this.resolvedProperty[this.propertyIndex];
+		}, function getValue_toArray(buffer, offset) {
+			this.resolvedProperty.toArray(buffer, offset);
+		}],
+		SetterByBindingTypeAndVersioning: [[// Direct
+		function setValue_direct(buffer, offset) {
+			this.targetObject[this.propertyName] = buffer[offset];
+		}, function setValue_direct_setNeedsUpdate(buffer, offset) {
+			this.targetObject[this.propertyName] = buffer[offset];
+			this.targetObject.needsUpdate = true;
+		}, function setValue_direct_setMatrixWorldNeedsUpdate(buffer, offset) {
+			this.targetObject[this.propertyName] = buffer[offset];
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		}], [// EntireArray
+		function setValue_array(buffer, offset) {
+			var dest = this.resolvedProperty;
+
+			for (var i = 0, n = dest.length; i !== n; ++i) {
+				dest[i] = buffer[offset++];
+			}
+		}, function setValue_array_setNeedsUpdate(buffer, offset) {
+			var dest = this.resolvedProperty;
+
+			for (var i = 0, n = dest.length; i !== n; ++i) {
+				dest[i] = buffer[offset++];
+			}
+
+			this.targetObject.needsUpdate = true;
+		}, function setValue_array_setMatrixWorldNeedsUpdate(buffer, offset) {
+			var dest = this.resolvedProperty;
+
+			for (var i = 0, n = dest.length; i !== n; ++i) {
+				dest[i] = buffer[offset++];
+			}
+
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		}], [// ArrayElement
+		function setValue_arrayElement(buffer, offset) {
+			this.resolvedProperty[this.propertyIndex] = buffer[offset];
+		}, function setValue_arrayElement_setNeedsUpdate(buffer, offset) {
+			this.resolvedProperty[this.propertyIndex] = buffer[offset];
+			this.targetObject.needsUpdate = true;
+		}, function setValue_arrayElement_setMatrixWorldNeedsUpdate(buffer, offset) {
+			this.resolvedProperty[this.propertyIndex] = buffer[offset];
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		}], [// HasToFromArray
+		function setValue_fromArray(buffer, offset) {
+			this.resolvedProperty.fromArray(buffer, offset);
+		}, function setValue_fromArray_setNeedsUpdate(buffer, offset) {
+			this.resolvedProperty.fromArray(buffer, offset);
+			this.targetObject.needsUpdate = true;
+		}, function setValue_fromArray_setMatrixWorldNeedsUpdate(buffer, offset) {
+			this.resolvedProperty.fromArray(buffer, offset);
+			this.targetObject.matrixWorldNeedsUpdate = true;
+		}]],
+		getValue: function getValue_unbound(targetArray, offset) {
+			this.bind();
+			this.getValue(targetArray, offset); // Note: This class uses a State pattern on a per-method basis:
+			// 'bind' sets 'this.getValue' / 'setValue' and shadows the
+			// prototype version of these methods with one that represents
+			// the bound state. When the property is not found, the methods
+			// become no-ops.
+		},
+		setValue: function getValue_unbound(sourceArray, offset) {
+			this.bind();
+			this.setValue(sourceArray, offset);
+		},
+		// create getter / setter pair for a property in the scene graph
+		bind: function bind() {
+			var targetObject = this.node;
+			var parsedPath = this.parsedPath;
+			var objectName = parsedPath.objectName;
+			var propertyName = parsedPath.propertyName;
+			var propertyIndex = parsedPath.propertyIndex;
+
+			if (!targetObject) {
+				targetObject = PropertyBinding.findNode(this.rootNode, parsedPath.nodeName) || this.rootNode;
+				this.node = targetObject;
+			} // set fail state so we can just 'return' on error
+
+
+			this.getValue = this._getValue_unavailable;
+			this.setValue = this._setValue_unavailable; // ensure there is a value node
+
+			if (!targetObject) {
+				console.error('THREE.PropertyBinding: Trying to update node for track: ' + this.path + ' but it wasn\'t found.');
+				return;
+			}
+
+			if (objectName) {
+				var objectIndex = parsedPath.objectIndex; // special cases were we need to reach deeper into the hierarchy to get the face materials....
+
+				switch (objectName) {
+					case 'materials':
+						if (!targetObject.material) {
+							console.error('THREE.PropertyBinding: Can not bind to material as node does not have a material.', this);
+							return;
+						}
+
+						if (!targetObject.material.materials) {
+							console.error('THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this);
+							return;
+						}
+
+						targetObject = targetObject.material.materials;
+						break;
+
+					case 'bones':
+						if (!targetObject.skeleton) {
+							console.error('THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this);
+							return;
+						} // potential future optimization: skip this if propertyIndex is already an integer
+						// and convert the integer string to a true integer.
+
+
+						targetObject = targetObject.skeleton.bones; // support resolving morphTarget names into indices.
+
+						for (var i = 0; i < targetObject.length; i++) {
+							if (targetObject[i].name === objectIndex) {
+								objectIndex = i;
+								break;
+							}
+						}
+
+						break;
+
+					default:
+						if (targetObject[objectName] === undefined) {
+							console.error('THREE.PropertyBinding: Can not bind to objectName of node undefined.', this);
+							return;
+						}
+
+						targetObject = targetObject[objectName];
+				}
+
+				if (objectIndex !== undefined) {
+					if (targetObject[objectIndex] === undefined) {
+						console.error('THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject);
+						return;
+					}
+
+					targetObject = targetObject[objectIndex];
+				}
+			} // resolve property
+
+
+			var nodeProperty = targetObject[propertyName];
+
+			if (nodeProperty === undefined) {
+				var nodeName = parsedPath.nodeName;
+				console.error('THREE.PropertyBinding: Trying to update property for track: ' + nodeName + '.' + propertyName + ' but it wasn\'t found.', targetObject);
+				return;
+			} // determine versioning scheme
+
+
+			var versioning = this.Versioning.None;
+			this.targetObject = targetObject;
+
+			if (targetObject.needsUpdate !== undefined) {
+				// material
+				versioning = this.Versioning.NeedsUpdate;
+			} else if (targetObject.matrixWorldNeedsUpdate !== undefined) {
+				// node transform
+				versioning = this.Versioning.MatrixWorldNeedsUpdate;
+			} // determine how the property gets bound
+
+
+			var bindingType = this.BindingType.Direct;
+
+			if (propertyIndex !== undefined) {
+				// access a sub element of the property array (only primitives are supported right now)
+				if (propertyName === 'morphTargetInfluences') {
+					// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.
+					// support resolving morphTarget names into indices.
+					if (!targetObject.geometry) {
+						console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this);
+						return;
+					}
+
+					if (targetObject.geometry.isBufferGeometry) {
+						if (!targetObject.geometry.morphAttributes) {
+							console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this);
+							return;
+						}
+
+						if (targetObject.morphTargetDictionary[propertyIndex] !== undefined) {
+							propertyIndex = targetObject.morphTargetDictionary[propertyIndex];
+						}
+					} else {
+						console.error('THREE.PropertyBinding: Can not bind to morphTargetInfluences on THREE.Geometry. Use THREE.BufferGeometry instead.', this);
+						return;
+					}
+				}
+
+				bindingType = this.BindingType.ArrayElement;
+				this.resolvedProperty = nodeProperty;
+				this.propertyIndex = propertyIndex;
+			} else if (nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined) {
+				// must use copy for Object3D.Euler/Quaternion
+				bindingType = this.BindingType.HasFromToArray;
+				this.resolvedProperty = nodeProperty;
+			} else if (Array.isArray(nodeProperty)) {
+				bindingType = this.BindingType.EntireArray;
+				this.resolvedProperty = nodeProperty;
+			} else {
+				this.propertyName = propertyName;
+			} // select getter / setter
+
+
+			this.getValue = this.GetterByBindingType[bindingType];
+			this.setValue = this.SetterByBindingTypeAndVersioning[bindingType][versioning];
+		},
+		unbind: function unbind() {
+			this.node = null; // back to the prototype version of getValue / setValue
+			// note: avoiding to mutate the shape of 'this' via 'delete'
+
+			this.getValue = this._getValue_unbound;
+			this.setValue = this._setValue_unbound;
+		}
+	}); // DECLARE ALIAS AFTER assign prototype
+
+	Object.assign(PropertyBinding.prototype, {
+		// initial state of these methods that calls 'bind'
+		_getValue_unbound: PropertyBinding.prototype.getValue,
+		_setValue_unbound: PropertyBinding.prototype.setValue
+	});
+
+	/**
+	 *
+	 * A group of objects that receives a shared animation state.
+	 *
+	 * Usage:
+	 *
+	 *	- Add objects you would otherwise pass as 'root' to the
+	 *		constructor or the .clipAction method of AnimationMixer.
+	 *
+	 *	- Instead pass this object as 'root'.
+	 *
+	 *	- You can also add and remove objects later when the mixer
+	 *		is running.
+	 *
+	 * Note:
+	 *
+	 *		Objects of this class appear as one object to the mixer,
+	 *		so cache control of the individual objects must be done
+	 *		on the group.
+	 *
+	 * Limitation:
+	 *
+	 *	- The animated properties must be compatible among the
+	 *		all objects in the group.
+	 *
+	 *	- A single property can either be controlled through a
+	 *		target group or directly, but not both.
+	 */
+
+	var AnimationObjectGroup = /*#__PURE__*/function () {
+		function AnimationObjectGroup() {
+			this.uuid = MathUtils.generateUUID(); // cached objects followed by the active ones
+
+			this._objects = Array.prototype.slice.call(arguments);
+			this.nCachedObjects_ = 0; // threshold
+			// note: read by PropertyBinding.Composite
+
+			var indices = {};
+			this._indicesByUUID = indices; // for bookkeeping
+
+			for (var i = 0, n = arguments.length; i !== n; ++i) {
+				indices[arguments[i].uuid] = i;
+			}
+
+			this._paths = []; // inside: string
+
+			this._parsedPaths = []; // inside: { we don't care, here }
+
+			this._bindings = []; // inside: Array< PropertyBinding >
+
+			this._bindingsIndicesByPath = {}; // inside: indices in these arrays
+
+			var scope = this;
+			this.stats = {
+				objects: {
+					get total() {
+						return scope._objects.length;
+					},
+
+					get inUse() {
+						return this.total - scope.nCachedObjects_;
+					}
+
+				},
+
+				get bindingsPerObject() {
+					return scope._bindings.length;
+				}
+
+			};
+		}
+
+		var _proto = AnimationObjectGroup.prototype;
+
+		_proto.add = function add() {
+			var objects = this._objects,
+					indicesByUUID = this._indicesByUUID,
+					paths = this._paths,
+					parsedPaths = this._parsedPaths,
+					bindings = this._bindings,
+					nBindings = bindings.length;
+			var knownObject = undefined,
+					nObjects = objects.length,
+					nCachedObjects = this.nCachedObjects_;
+
+			for (var i = 0, n = arguments.length; i !== n; ++i) {
+				var object = arguments[i],
+						uuid = object.uuid;
+				var index = indicesByUUID[uuid];
+
+				if (index === undefined) {
+					// unknown object -> add it to the ACTIVE region
+					index = nObjects++;
+					indicesByUUID[uuid] = index;
+					objects.push(object); // accounting is done, now do the same for all bindings
+
+					for (var j = 0, m = nBindings; j !== m; ++j) {
+						bindings[j].push(new PropertyBinding(object, paths[j], parsedPaths[j]));
+					}
+				} else if (index < nCachedObjects) {
+					knownObject = objects[index]; // move existing object to the ACTIVE region
+
+					var firstActiveIndex = --nCachedObjects,
+							lastCachedObject = objects[firstActiveIndex];
+					indicesByUUID[lastCachedObject.uuid] = index;
+					objects[index] = lastCachedObject;
+					indicesByUUID[uuid] = firstActiveIndex;
+					objects[firstActiveIndex] = object; // accounting is done, now do the same for all bindings
+
+					for (var _j = 0, _m = nBindings; _j !== _m; ++_j) {
+						var bindingsForPath = bindings[_j],
+								lastCached = bindingsForPath[firstActiveIndex];
+						var binding = bindingsForPath[index];
+						bindingsForPath[index] = lastCached;
+
+						if (binding === undefined) {
+							// since we do not bother to create new bindings
+							// for objects that are cached, the binding may
+							// or may not exist
+							binding = new PropertyBinding(object, paths[_j], parsedPaths[_j]);
+						}
+
+						bindingsForPath[firstActiveIndex] = binding;
+					}
+				} else if (objects[index] !== knownObject) {
+					console.error('THREE.AnimationObjectGroup: Different objects with the same UUID ' + 'detected. Clean the caches or recreate your infrastructure when reloading scenes.');
+				} // else the object is already where we want it to be
+
+			} // for arguments
+
+
+			this.nCachedObjects_ = nCachedObjects;
+		};
+
+		_proto.remove = function remove() {
+			var objects = this._objects,
+					indicesByUUID = this._indicesByUUID,
+					bindings = this._bindings,
+					nBindings = bindings.length;
+			var nCachedObjects = this.nCachedObjects_;
+
+			for (var i = 0, n = arguments.length; i !== n; ++i) {
+				var object = arguments[i],
+						uuid = object.uuid,
+						index = indicesByUUID[uuid];
+
+				if (index !== undefined && index >= nCachedObjects) {
+					// move existing object into the CACHED region
+					var lastCachedIndex = nCachedObjects++,
+							firstActiveObject = objects[lastCachedIndex];
+					indicesByUUID[firstActiveObject.uuid] = index;
+					objects[index] = firstActiveObject;
+					indicesByUUID[uuid] = lastCachedIndex;
+					objects[lastCachedIndex] = object; // accounting is done, now do the same for all bindings
+
+					for (var j = 0, m = nBindings; j !== m; ++j) {
+						var bindingsForPath = bindings[j],
+								firstActive = bindingsForPath[lastCachedIndex],
+								binding = bindingsForPath[index];
+						bindingsForPath[index] = firstActive;
+						bindingsForPath[lastCachedIndex] = binding;
+					}
+				}
+			} // for arguments
+
+
+			this.nCachedObjects_ = nCachedObjects;
+		} // remove & forget
+		;
+
+		_proto.uncache = function uncache() {
+			var objects = this._objects,
+					indicesByUUID = this._indicesByUUID,
+					bindings = this._bindings,
+					nBindings = bindings.length;
+			var nCachedObjects = this.nCachedObjects_,
+					nObjects = objects.length;
+
+			for (var i = 0, n = arguments.length; i !== n; ++i) {
+				var object = arguments[i],
+						uuid = object.uuid,
+						index = indicesByUUID[uuid];
+
+				if (index !== undefined) {
+					delete indicesByUUID[uuid];
+
+					if (index < nCachedObjects) {
+						// object is cached, shrink the CACHED region
+						var firstActiveIndex = --nCachedObjects,
+								lastCachedObject = objects[firstActiveIndex],
+								lastIndex = --nObjects,
+								lastObject = objects[lastIndex]; // last cached object takes this object's place
+
+						indicesByUUID[lastCachedObject.uuid] = index;
+						objects[index] = lastCachedObject; // last object goes to the activated slot and pop
+
+						indicesByUUID[lastObject.uuid] = firstActiveIndex;
+						objects[firstActiveIndex] = lastObject;
+						objects.pop(); // accounting is done, now do the same for all bindings
+
+						for (var j = 0, m = nBindings; j !== m; ++j) {
+							var bindingsForPath = bindings[j],
+									lastCached = bindingsForPath[firstActiveIndex],
+									last = bindingsForPath[lastIndex];
+							bindingsForPath[index] = lastCached;
+							bindingsForPath[firstActiveIndex] = last;
+							bindingsForPath.pop();
+						}
+					} else {
+						// object is active, just swap with the last and pop
+						var _lastIndex = --nObjects,
+								_lastObject = objects[_lastIndex];
+
+						if (_lastIndex > 0) {
+							indicesByUUID[_lastObject.uuid] = index;
+						}
+
+						objects[index] = _lastObject;
+						objects.pop(); // accounting is done, now do the same for all bindings
+
+						for (var _j2 = 0, _m2 = nBindings; _j2 !== _m2; ++_j2) {
+							var _bindingsForPath = bindings[_j2];
+							_bindingsForPath[index] = _bindingsForPath[_lastIndex];
+
+							_bindingsForPath.pop();
+						}
+					} // cached or active
+
+				} // if object is known
+
+			} // for arguments
+
+
+			this.nCachedObjects_ = nCachedObjects;
+		} // Internal interface used by befriended PropertyBinding.Composite:
+		;
+
+		_proto.subscribe_ = function subscribe_(path, parsedPath) {
+			// returns an array of bindings for the given path that is changed
+			// according to the contained objects in the group
+			var indicesByPath = this._bindingsIndicesByPath;
+			var index = indicesByPath[path];
+			var bindings = this._bindings;
+			if (index !== undefined) return bindings[index];
+			var paths = this._paths,
+					parsedPaths = this._parsedPaths,
+					objects = this._objects,
+					nObjects = objects.length,
+					nCachedObjects = this.nCachedObjects_,
+					bindingsForPath = new Array(nObjects);
+			index = bindings.length;
+			indicesByPath[path] = index;
+			paths.push(path);
+			parsedPaths.push(parsedPath);
+			bindings.push(bindingsForPath);
+
+			for (var i = nCachedObjects, n = objects.length; i !== n; ++i) {
+				var object = objects[i];
+				bindingsForPath[i] = new PropertyBinding(object, path, parsedPath);
+			}
+
+			return bindingsForPath;
+		};
+
+		_proto.unsubscribe_ = function unsubscribe_(path) {
+			// tells the group to forget about a property path and no longer
+			// update the array previously obtained with 'subscribe_'
+			var indicesByPath = this._bindingsIndicesByPath,
+					index = indicesByPath[path];
+
+			if (index !== undefined) {
+				var paths = this._paths,
+						parsedPaths = this._parsedPaths,
+						bindings = this._bindings,
+						lastBindingsIndex = bindings.length - 1,
+						lastBindings = bindings[lastBindingsIndex],
+						lastBindingsPath = path[lastBindingsIndex];
+				indicesByPath[lastBindingsPath] = index;
+				bindings[index] = lastBindings;
+				bindings.pop();
+				parsedPaths[index] = parsedPaths[lastBindingsIndex];
+				parsedPaths.pop();
+				paths[index] = paths[lastBindingsIndex];
+				paths.pop();
+			}
+		};
+
+		return AnimationObjectGroup;
+	}();
+
+	AnimationObjectGroup.prototype.isAnimationObjectGroup = true;
+
+	var AnimationAction = /*#__PURE__*/function () {
+		function AnimationAction(mixer, clip, localRoot, blendMode) {
+			if (localRoot === void 0) {
+				localRoot = null;
+			}
+
+			if (blendMode === void 0) {
+				blendMode = clip.blendMode;
+			}
+
+			this._mixer = mixer;
+			this._clip = clip;
+			this._localRoot = localRoot;
+			this.blendMode = blendMode;
+			var tracks = clip.tracks,
+					nTracks = tracks.length,
+					interpolants = new Array(nTracks);
+			var interpolantSettings = {
+				endingStart: ZeroCurvatureEnding,
+				endingEnd: ZeroCurvatureEnding
+			};
+
+			for (var i = 0; i !== nTracks; ++i) {
+				var interpolant = tracks[i].createInterpolant(null);
+				interpolants[i] = interpolant;
+				interpolant.settings = interpolantSettings;
+			}
+
+			this._interpolantSettings = interpolantSettings;
+			this._interpolants = interpolants; // bound by the mixer
+			// inside: PropertyMixer (managed by the mixer)
+
+			this._propertyBindings = new Array(nTracks);
+			this._cacheIndex = null; // for the memory manager
+
+			this._byClipCacheIndex = null; // for the memory manager
+
+			this._timeScaleInterpolant = null;
+			this._weightInterpolant = null;
+			this.loop = LoopRepeat;
+			this._loopCount = -1; // global mixer time when the action is to be started
+			// it's set back to 'null' upon start of the action
+
+			this._startTime = null; // scaled local time of the action
+			// gets clamped or wrapped to 0..clip.duration according to loop
+
+			this.time = 0;
+			this.timeScale = 1;
+			this._effectiveTimeScale = 1;
+			this.weight = 1;
+			this._effectiveWeight = 1;
+			this.repetitions = Infinity; // no. of repetitions when looping
+
+			this.paused = false; // true -> zero effective time scale
+
+			this.enabled = true; // false -> zero effective weight
+
+			this.clampWhenFinished = false; // keep feeding the last frame?
+
+			this.zeroSlopeAtStart = true; // for smooth interpolation w/o separate
+
+			this.zeroSlopeAtEnd = true; // clips for start, loop and end
+		} // State & Scheduling
+
+
+		var _proto = AnimationAction.prototype;
+
+		_proto.play = function play() {
+			this._mixer._activateAction(this);
+
+			return this;
+		};
+
+		_proto.stop = function stop() {
+			this._mixer._deactivateAction(this);
+
+			return this.reset();
+		};
+
+		_proto.reset = function reset() {
+			this.paused = false;
+			this.enabled = true;
+			this.time = 0; // restart clip
+
+			this._loopCount = -1; // forget previous loops
+
+			this._startTime = null; // forget scheduling
+
+			return this.stopFading().stopWarping();
+		};
+
+		_proto.isRunning = function isRunning() {
+			return this.enabled && !this.paused && this.timeScale !== 0 && this._startTime === null && this._mixer._isActiveAction(this);
+		} // return true when play has been called
+		;
+
+		_proto.isScheduled = function isScheduled() {
+			return this._mixer._isActiveAction(this);
+		};
+
+		_proto.startAt = function startAt(time) {
+			this._startTime = time;
+			return this;
+		};
+
+		_proto.setLoop = function setLoop(mode, repetitions) {
+			this.loop = mode;
+			this.repetitions = repetitions;
+			return this;
+		} // Weight
+		// set the weight stopping any scheduled fading
+		// although .enabled = false yields an effective weight of zero, this
+		// method does *not* change .enabled, because it would be confusing
+		;
+
+		_proto.setEffectiveWeight = function setEffectiveWeight(weight) {
+			this.weight = weight; // note: same logic as when updated at runtime
+
+			this._effectiveWeight = this.enabled ? weight : 0;
+			return this.stopFading();
+		} // return the weight considering fading and .enabled
+		;
+
+		_proto.getEffectiveWeight = function getEffectiveWeight() {
+			return this._effectiveWeight;
+		};
+
+		_proto.fadeIn = function fadeIn(duration) {
+			return this._scheduleFading(duration, 0, 1);
+		};
+
+		_proto.fadeOut = function fadeOut(duration) {
+			return this._scheduleFading(duration, 1, 0);
+		};
+
+		_proto.crossFadeFrom = function crossFadeFrom(fadeOutAction, duration, warp) {
+			fadeOutAction.fadeOut(duration);
+			this.fadeIn(duration);
+
+			if (warp) {
+				var fadeInDuration = this._clip.duration,
+						fadeOutDuration = fadeOutAction._clip.duration,
+						startEndRatio = fadeOutDuration / fadeInDuration,
+						endStartRatio = fadeInDuration / fadeOutDuration;
+				fadeOutAction.warp(1.0, startEndRatio, duration);
+				this.warp(endStartRatio, 1.0, duration);
+			}
+
+			return this;
+		};
+
+		_proto.crossFadeTo = function crossFadeTo(fadeInAction, duration, warp) {
+			return fadeInAction.crossFadeFrom(this, duration, warp);
+		};
+
+		_proto.stopFading = function stopFading() {
+			var weightInterpolant = this._weightInterpolant;
+
+			if (weightInterpolant !== null) {
+				this._weightInterpolant = null;
+
+				this._mixer._takeBackControlInterpolant(weightInterpolant);
+			}
+
+			return this;
+		} // Time Scale Control
+		// set the time scale stopping any scheduled warping
+		// although .paused = true yields an effective time scale of zero, this
+		// method does *not* change .paused, because it would be confusing
+		;
+
+		_proto.setEffectiveTimeScale = function setEffectiveTimeScale(timeScale) {
+			this.timeScale = timeScale;
+			this._effectiveTimeScale = this.paused ? 0 : timeScale;
+			return this.stopWarping();
+		} // return the time scale considering warping and .paused
+		;
+
+		_proto.getEffectiveTimeScale = function getEffectiveTimeScale() {
+			return this._effectiveTimeScale;
+		};
+
+		_proto.setDuration = function setDuration(duration) {
+			this.timeScale = this._clip.duration / duration;
+			return this.stopWarping();
+		};
+
+		_proto.syncWith = function syncWith(action) {
+			this.time = action.time;
+			this.timeScale = action.timeScale;
+			return this.stopWarping();
+		};
+
+		_proto.halt = function halt(duration) {
+			return this.warp(this._effectiveTimeScale, 0, duration);
+		};
+
+		_proto.warp = function warp(startTimeScale, endTimeScale, duration) {
+			var mixer = this._mixer,
+					now = mixer.time,
+					timeScale = this.timeScale;
+			var interpolant = this._timeScaleInterpolant;
+
+			if (interpolant === null) {
+				interpolant = mixer._lendControlInterpolant();
+				this._timeScaleInterpolant = interpolant;
+			}
+
+			var times = interpolant.parameterPositions,
+					values = interpolant.sampleValues;
+			times[0] = now;
+			times[1] = now + duration;
+			values[0] = startTimeScale / timeScale;
+			values[1] = endTimeScale / timeScale;
+			return this;
+		};
+
+		_proto.stopWarping = function stopWarping() {
+			var timeScaleInterpolant = this._timeScaleInterpolant;
+
+			if (timeScaleInterpolant !== null) {
+				this._timeScaleInterpolant = null;
+
+				this._mixer._takeBackControlInterpolant(timeScaleInterpolant);
+			}
+
+			return this;
+		} // Object Accessors
+		;
+
+		_proto.getMixer = function getMixer() {
+			return this._mixer;
+		};
+
+		_proto.getClip = function getClip() {
+			return this._clip;
+		};
+
+		_proto.getRoot = function getRoot() {
+			return this._localRoot || this._mixer._root;
+		} // Interna
+		;
+
+		_proto._update = function _update(time, deltaTime, timeDirection, accuIndex) {
+			// called by the mixer
+			if (!this.enabled) {
+				// call ._updateWeight() to update ._effectiveWeight
+				this._updateWeight(time);
+
+				return;
+			}
+
+			var startTime = this._startTime;
+
+			if (startTime !== null) {
+				// check for scheduled start of action
+				var timeRunning = (time - startTime) * timeDirection;
+
+				if (timeRunning < 0 || timeDirection === 0) {
+					return; // yet to come / don't decide when delta = 0
+				} // start
+
+
+				this._startTime = null; // unschedule
+
+				deltaTime = timeDirection * timeRunning;
+			} // apply time scale and advance time
+
+
+			deltaTime *= this._updateTimeScale(time);
+
+			var clipTime = this._updateTime(deltaTime); // note: _updateTime may disable the action resulting in
+			// an effective weight of 0
+
+
+			var weight = this._updateWeight(time);
+
+			if (weight > 0) {
+				var _interpolants = this._interpolants;
+				var propertyMixers = this._propertyBindings;
+
+				switch (this.blendMode) {
+					case AdditiveAnimationBlendMode:
+						for (var j = 0, m = _interpolants.length; j !== m; ++j) {
+							_interpolants[j].evaluate(clipTime);
+
+							propertyMixers[j].accumulateAdditive(weight);
+						}
+
+						break;
+
+					case NormalAnimationBlendMode:
+					default:
+						for (var _j = 0, _m = _interpolants.length; _j !== _m; ++_j) {
+							_interpolants[_j].evaluate(clipTime);
+
+							propertyMixers[_j].accumulate(accuIndex, weight);
+						}
+
+				}
+			}
+		};
+
+		_proto._updateWeight = function _updateWeight(time) {
+			var weight = 0;
+
+			if (this.enabled) {
+				weight = this.weight;
+				var interpolant = this._weightInterpolant;
+
+				if (interpolant !== null) {
+					var interpolantValue = interpolant.evaluate(time)[0];
+					weight *= interpolantValue;
+
+					if (time > interpolant.parameterPositions[1]) {
+						this.stopFading();
+
+						if (interpolantValue === 0) {
+							// faded out, disable
+							this.enabled = false;
+						}
+					}
+				}
+			}
+
+			this._effectiveWeight = weight;
+			return weight;
+		};
+
+		_proto._updateTimeScale = function _updateTimeScale(time) {
+			var timeScale = 0;
+
+			if (!this.paused) {
+				timeScale = this.timeScale;
+				var interpolant = this._timeScaleInterpolant;
+
+				if (interpolant !== null) {
+					var interpolantValue = interpolant.evaluate(time)[0];
+					timeScale *= interpolantValue;
+
+					if (time > interpolant.parameterPositions[1]) {
+						this.stopWarping();
+
+						if (timeScale === 0) {
+							// motion has halted, pause
+							this.paused = true;
+						} else {
+							// warp done - apply final time scale
+							this.timeScale = timeScale;
+						}
+					}
+				}
+			}
+
+			this._effectiveTimeScale = timeScale;
+			return timeScale;
+		};
+
+		_proto._updateTime = function _updateTime(deltaTime) {
+			var duration = this._clip.duration;
+			var loop = this.loop;
+			var time = this.time + deltaTime;
+			var loopCount = this._loopCount;
+			var pingPong = loop === LoopPingPong;
+
+			if (deltaTime === 0) {
+				if (loopCount === -1) return time;
+				return pingPong && (loopCount & 1) === 1 ? duration - time : time;
+			}
+
+			if (loop === LoopOnce) {
+				if (loopCount === -1) {
+					// just started
+					this._loopCount = 0;
+
+					this._setEndings(true, true, false);
+				}
+
+				handle_stop: {
+					if (time >= duration) {
+						time = duration;
+					} else if (time < 0) {
+						time = 0;
+					} else {
+						this.time = time;
+						break handle_stop;
+					}
+
+					if (this.clampWhenFinished) this.paused = true;else this.enabled = false;
+					this.time = time;
+
+					this._mixer.dispatchEvent({
+						type: 'finished',
+						action: this,
+						direction: deltaTime < 0 ? -1 : 1
+					});
+				}
+			} else {
+				// repetitive Repeat or PingPong
+				if (loopCount === -1) {
+					// just started
+					if (deltaTime >= 0) {
+						loopCount = 0;
+
+						this._setEndings(true, this.repetitions === 0, pingPong);
+					} else {
+						// when looping in reverse direction, the initial
+						// transition through zero counts as a repetition,
+						// so leave loopCount at -1
+						this._setEndings(this.repetitions === 0, true, pingPong);
+					}
+				}
+
+				if (time >= duration || time < 0) {
+					// wrap around
+					var loopDelta = Math.floor(time / duration); // signed
+
+					time -= duration * loopDelta;
+					loopCount += Math.abs(loopDelta);
+					var pending = this.repetitions - loopCount;
+
+					if (pending <= 0) {
+						// have to stop (switch state, clamp time, fire event)
+						if (this.clampWhenFinished) this.paused = true;else this.enabled = false;
+						time = deltaTime > 0 ? duration : 0;
+						this.time = time;
+
+						this._mixer.dispatchEvent({
+							type: 'finished',
+							action: this,
+							direction: deltaTime > 0 ? 1 : -1
+						});
+					} else {
+						// keep running
+						if (pending === 1) {
+							// entering the last round
+							var atStart = deltaTime < 0;
+
+							this._setEndings(atStart, !atStart, pingPong);
+						} else {
+							this._setEndings(false, false, pingPong);
+						}
+
+						this._loopCount = loopCount;
+						this.time = time;
+
+						this._mixer.dispatchEvent({
+							type: 'loop',
+							action: this,
+							loopDelta: loopDelta
+						});
+					}
+				} else {
+					this.time = time;
+				}
+
+				if (pingPong && (loopCount & 1) === 1) {
+					// invert time for the "pong round"
+					return duration - time;
+				}
+			}
+
+			return time;
+		};
+
+		_proto._setEndings = function _setEndings(atStart, atEnd, pingPong) {
+			var settings = this._interpolantSettings;
+
+			if (pingPong) {
+				settings.endingStart = ZeroSlopeEnding;
+				settings.endingEnd = ZeroSlopeEnding;
+			} else {
+				// assuming for LoopOnce atStart == atEnd == true
+				if (atStart) {
+					settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
+				} else {
+					settings.endingStart = WrapAroundEnding;
+				}
+
+				if (atEnd) {
+					settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
+				} else {
+					settings.endingEnd = WrapAroundEnding;
+				}
+			}
+		};
+
+		_proto._scheduleFading = function _scheduleFading(duration, weightNow, weightThen) {
+			var mixer = this._mixer,
+					now = mixer.time;
+			var interpolant = this._weightInterpolant;
+
+			if (interpolant === null) {
+				interpolant = mixer._lendControlInterpolant();
+				this._weightInterpolant = interpolant;
+			}
+
+			var times = interpolant.parameterPositions,
+					values = interpolant.sampleValues;
+			times[0] = now;
+			values[0] = weightNow;
+			times[1] = now + duration;
+			values[1] = weightThen;
+			return this;
+		};
+
+		return AnimationAction;
+	}();
+
+	var AnimationMixer = /*#__PURE__*/function (_EventDispatcher) {
+		_inheritsLoose(AnimationMixer, _EventDispatcher);
+
+		function AnimationMixer(root) {
+			var _this;
+
+			_this = _EventDispatcher.call(this) || this;
+			_this._root = root;
+
+			_this._initMemoryManager();
+
+			_this._accuIndex = 0;
+			_this.time = 0;
+			_this.timeScale = 1.0;
+			return _this;
+		}
+
+		var _proto = AnimationMixer.prototype;
+
+		_proto._bindAction = function _bindAction(action, prototypeAction) {
+			var root = action._localRoot || this._root,
+					tracks = action._clip.tracks,
+					nTracks = tracks.length,
+					bindings = action._propertyBindings,
+					interpolants = action._interpolants,
+					rootUuid = root.uuid,
+					bindingsByRoot = this._bindingsByRootAndName;
+			var bindingsByName = bindingsByRoot[rootUuid];
+
+			if (bindingsByName === undefined) {
+				bindingsByName = {};
+				bindingsByRoot[rootUuid] = bindingsByName;
+			}
+
+			for (var i = 0; i !== nTracks; ++i) {
+				var track = tracks[i],
+						trackName = track.name;
+				var binding = bindingsByName[trackName];
+
+				if (binding !== undefined) {
+					bindings[i] = binding;
+				} else {
+					binding = bindings[i];
+
+					if (binding !== undefined) {
+						// existing binding, make sure the cache knows
+						if (binding._cacheIndex === null) {
+							++binding.referenceCount;
+
+							this._addInactiveBinding(binding, rootUuid, trackName);
+						}
+
+						continue;
+					}
+
+					var path = prototypeAction && prototypeAction._propertyBindings[i].binding.parsedPath;
+					binding = new PropertyMixer(PropertyBinding.create(root, trackName, path), track.ValueTypeName, track.getValueSize());
+					++binding.referenceCount;
+
+					this._addInactiveBinding(binding, rootUuid, trackName);
+
+					bindings[i] = binding;
+				}
+
+				interpolants[i].resultBuffer = binding.buffer;
+			}
+		};
+
+		_proto._activateAction = function _activateAction(action) {
+			if (!this._isActiveAction(action)) {
+				if (action._cacheIndex === null) {
+					// this action has been forgotten by the cache, but the user
+					// appears to be still using it -> rebind
+					var rootUuid = (action._localRoot || this._root).uuid,
+							clipUuid = action._clip.uuid,
+							actionsForClip = this._actionsByClip[clipUuid];
+
+					this._bindAction(action, actionsForClip && actionsForClip.knownActions[0]);
+
+					this._addInactiveAction(action, clipUuid, rootUuid);
+				}
+
+				var bindings = action._propertyBindings; // increment reference counts / sort out state
+
+				for (var i = 0, n = bindings.length; i !== n; ++i) {
+					var binding = bindings[i];
+
+					if (binding.useCount++ === 0) {
+						this._lendBinding(binding);
+
+						binding.saveOriginalState();
+					}
+				}
+
+				this._lendAction(action);
+			}
+		};
+
+		_proto._deactivateAction = function _deactivateAction(action) {
+			if (this._isActiveAction(action)) {
+				var bindings = action._propertyBindings; // decrement reference counts / sort out state
+
+				for (var i = 0, n = bindings.length; i !== n; ++i) {
+					var binding = bindings[i];
+
+					if (--binding.useCount === 0) {
+						binding.restoreOriginalState();
+
+						this._takeBackBinding(binding);
+					}
+				}
+
+				this._takeBackAction(action);
+			}
+		} // Memory manager
+		;
+
+		_proto._initMemoryManager = function _initMemoryManager() {
+			this._actions = []; // 'nActiveActions' followed by inactive ones
+
+			this._nActiveActions = 0;
+			this._actionsByClip = {}; // inside:
+			// {
+			// 	knownActions: Array< AnimationAction > - used as prototypes
+			// 	actionByRoot: AnimationAction - lookup
+			// }
+
+			this._bindings = []; // 'nActiveBindings' followed by inactive ones
+
+			this._nActiveBindings = 0;
+			this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >
+
+			this._controlInterpolants = []; // same game as above
+
+			this._nActiveControlInterpolants = 0;
+			var scope = this;
+			this.stats = {
+				actions: {
+					get total() {
+						return scope._actions.length;
+					},
+
+					get inUse() {
+						return scope._nActiveActions;
+					}
+
+				},
+				bindings: {
+					get total() {
+						return scope._bindings.length;
+					},
+
+					get inUse() {
+						return scope._nActiveBindings;
+					}
+
+				},
+				controlInterpolants: {
+					get total() {
+						return scope._controlInterpolants.length;
+					},
+
+					get inUse() {
+						return scope._nActiveControlInterpolants;
+					}
+
+				}
+			};
+		} // Memory management for AnimationAction objects
+		;
+
+		_proto._isActiveAction = function _isActiveAction(action) {
+			var index = action._cacheIndex;
+			return index !== null && index < this._nActiveActions;
+		};
+
+		_proto._addInactiveAction = function _addInactiveAction(action, clipUuid, rootUuid) {
+			var actions = this._actions,
+					actionsByClip = this._actionsByClip;
+			var actionsForClip = actionsByClip[clipUuid];
+
+			if (actionsForClip === undefined) {
+				actionsForClip = {
+					knownActions: [action],
+					actionByRoot: {}
+				};
+				action._byClipCacheIndex = 0;
+				actionsByClip[clipUuid] = actionsForClip;
+			} else {
+				var knownActions = actionsForClip.knownActions;
+				action._byClipCacheIndex = knownActions.length;
+				knownActions.push(action);
+			}
+
+			action._cacheIndex = actions.length;
+			actions.push(action);
+			actionsForClip.actionByRoot[rootUuid] = action;
+		};
+
+		_proto._removeInactiveAction = function _removeInactiveAction(action) {
+			var actions = this._actions,
+					lastInactiveAction = actions[actions.length - 1],
+					cacheIndex = action._cacheIndex;
+			lastInactiveAction._cacheIndex = cacheIndex;
+			actions[cacheIndex] = lastInactiveAction;
+			actions.pop();
+			action._cacheIndex = null;
+			var clipUuid = action._clip.uuid,
+					actionsByClip = this._actionsByClip,
+					actionsForClip = actionsByClip[clipUuid],
+					knownActionsForClip = actionsForClip.knownActions,
+					lastKnownAction = knownActionsForClip[knownActionsForClip.length - 1],
+					byClipCacheIndex = action._byClipCacheIndex;
+			lastKnownAction._byClipCacheIndex = byClipCacheIndex;
+			knownActionsForClip[byClipCacheIndex] = lastKnownAction;
+			knownActionsForClip.pop();
+			action._byClipCacheIndex = null;
+			var actionByRoot = actionsForClip.actionByRoot,
+					rootUuid = (action._localRoot || this._root).uuid;
+			delete actionByRoot[rootUuid];
+
+			if (knownActionsForClip.length === 0) {
+				delete actionsByClip[clipUuid];
+			}
+
+			this._removeInactiveBindingsForAction(action);
+		};
+
+		_proto._removeInactiveBindingsForAction = function _removeInactiveBindingsForAction(action) {
+			var bindings = action._propertyBindings;
+
+			for (var i = 0, n = bindings.length; i !== n; ++i) {
+				var binding = bindings[i];
+
+				if (--binding.referenceCount === 0) {
+					this._removeInactiveBinding(binding);
+				}
+			}
+		};
+
+		_proto._lendAction = function _lendAction(action) {
+			// [ active actions |	inactive actions	]
+			// [	active actions >| inactive actions ]
+			//								 s				a
+			//									<-swap->
+			//								 a				s
+			var actions = this._actions,
+					prevIndex = action._cacheIndex,
+					lastActiveIndex = this._nActiveActions++,
+					firstInactiveAction = actions[lastActiveIndex];
+			action._cacheIndex = lastActiveIndex;
+			actions[lastActiveIndex] = action;
+			firstInactiveAction._cacheIndex = prevIndex;
+			actions[prevIndex] = firstInactiveAction;
+		};
+
+		_proto._takeBackAction = function _takeBackAction(action) {
+			// [	active actions	| inactive actions ]
+			// [ active actions |< inactive actions	]
+			//				a				s
+			//				 <-swap->
+			//				s				a
+			var actions = this._actions,
+					prevIndex = action._cacheIndex,
+					firstInactiveIndex = --this._nActiveActions,
+					lastActiveAction = actions[firstInactiveIndex];
+			action._cacheIndex = firstInactiveIndex;
+			actions[firstInactiveIndex] = action;
+			lastActiveAction._cacheIndex = prevIndex;
+			actions[prevIndex] = lastActiveAction;
+		} // Memory management for PropertyMixer objects
+		;
+
+		_proto._addInactiveBinding = function _addInactiveBinding(binding, rootUuid, trackName) {
+			var bindingsByRoot = this._bindingsByRootAndName,
+					bindings = this._bindings;
+			var bindingByName = bindingsByRoot[rootUuid];
+
+			if (bindingByName === undefined) {
+				bindingByName = {};
+				bindingsByRoot[rootUuid] = bindingByName;
+			}
+
+			bindingByName[trackName] = binding;
+			binding._cacheIndex = bindings.length;
+			bindings.push(binding);
+		};
+
+		_proto._removeInactiveBinding = function _removeInactiveBinding(binding) {
+			var bindings = this._bindings,
+					propBinding = binding.binding,
+					rootUuid = propBinding.rootNode.uuid,
+					trackName = propBinding.path,
+					bindingsByRoot = this._bindingsByRootAndName,
+					bindingByName = bindingsByRoot[rootUuid],
+					lastInactiveBinding = bindings[bindings.length - 1],
+					cacheIndex = binding._cacheIndex;
+			lastInactiveBinding._cacheIndex = cacheIndex;
+			bindings[cacheIndex] = lastInactiveBinding;
+			bindings.pop();
+			delete bindingByName[trackName];
+
+			if (Object.keys(bindingByName).length === 0) {
+				delete bindingsByRoot[rootUuid];
+			}
+		};
+
+		_proto._lendBinding = function _lendBinding(binding) {
+			var bindings = this._bindings,
+					prevIndex = binding._cacheIndex,
+					lastActiveIndex = this._nActiveBindings++,
+					firstInactiveBinding = bindings[lastActiveIndex];
+			binding._cacheIndex = lastActiveIndex;
+			bindings[lastActiveIndex] = binding;
+			firstInactiveBinding._cacheIndex = prevIndex;
+			bindings[prevIndex] = firstInactiveBinding;
+		};
+
+		_proto._takeBackBinding = function _takeBackBinding(binding) {
+			var bindings = this._bindings,
+					prevIndex = binding._cacheIndex,
+					firstInactiveIndex = --this._nActiveBindings,
+					lastActiveBinding = bindings[firstInactiveIndex];
+			binding._cacheIndex = firstInactiveIndex;
+			bindings[firstInactiveIndex] = binding;
+			lastActiveBinding._cacheIndex = prevIndex;
+			bindings[prevIndex] = lastActiveBinding;
+		} // Memory management of Interpolants for weight and time scale
+		;
+
+		_proto._lendControlInterpolant = function _lendControlInterpolant() {
+			var interpolants = this._controlInterpolants,
+					lastActiveIndex = this._nActiveControlInterpolants++;
+			var interpolant = interpolants[lastActiveIndex];
+
+			if (interpolant === undefined) {
+				interpolant = new LinearInterpolant(new Float32Array(2), new Float32Array(2), 1, this._controlInterpolantsResultBuffer);
+				interpolant.__cacheIndex = lastActiveIndex;
+				interpolants[lastActiveIndex] = interpolant;
+			}
+
+			return interpolant;
+		};
+
+		_proto._takeBackControlInterpolant = function _takeBackControlInterpolant(interpolant) {
+			var interpolants = this._controlInterpolants,
+					prevIndex = interpolant.__cacheIndex,
+					firstInactiveIndex = --this._nActiveControlInterpolants,
+					lastActiveInterpolant = interpolants[firstInactiveIndex];
+			interpolant.__cacheIndex = firstInactiveIndex;
+			interpolants[firstInactiveIndex] = interpolant;
+			lastActiveInterpolant.__cacheIndex = prevIndex;
+			interpolants[prevIndex] = lastActiveInterpolant;
+		} // return an action for a clip optionally using a custom root target
+		// object (this method allocates a lot of dynamic memory in case a
+		// previously unknown clip/root combination is specified)
+		;
+
+		_proto.clipAction = function clipAction(clip, optionalRoot, blendMode) {
+			var root = optionalRoot || this._root,
+					rootUuid = root.uuid;
+			var clipObject = typeof clip === 'string' ? AnimationClip.findByName(root, clip) : clip;
+			var clipUuid = clipObject !== null ? clipObject.uuid : clip;
+			var actionsForClip = this._actionsByClip[clipUuid];
+			var prototypeAction = null;
+
+			if (blendMode === undefined) {
+				if (clipObject !== null) {
+					blendMode = clipObject.blendMode;
+				} else {
+					blendMode = NormalAnimationBlendMode;
+				}
+			}
+
+			if (actionsForClip !== undefined) {
+				var existingAction = actionsForClip.actionByRoot[rootUuid];
+
+				if (existingAction !== undefined && existingAction.blendMode === blendMode) {
+					return existingAction;
+				} // we know the clip, so we don't have to parse all
+				// the bindings again but can just copy
+
+
+				prototypeAction = actionsForClip.knownActions[0]; // also, take the clip from the prototype action
+
+				if (clipObject === null) clipObject = prototypeAction._clip;
+			} // clip must be known when specified via string
+
+
+			if (clipObject === null) return null; // allocate all resources required to run it
+
+			var newAction = new AnimationAction(this, clipObject, optionalRoot, blendMode);
+
+			this._bindAction(newAction, prototypeAction); // and make the action known to the memory manager
+
+
+			this._addInactiveAction(newAction, clipUuid, rootUuid);
+
+			return newAction;
+		} // get an existing action
+		;
+
+		_proto.existingAction = function existingAction(clip, optionalRoot) {
+			var root = optionalRoot || this._root,
+					rootUuid = root.uuid,
+					clipObject = typeof clip === 'string' ? AnimationClip.findByName(root, clip) : clip,
+					clipUuid = clipObject ? clipObject.uuid : clip,
+					actionsForClip = this._actionsByClip[clipUuid];
+
+			if (actionsForClip !== undefined) {
+				return actionsForClip.actionByRoot[rootUuid] || null;
+			}
+
+			return null;
+		} // deactivates all previously scheduled actions
+		;
+
+		_proto.stopAllAction = function stopAllAction() {
+			var actions = this._actions,
+					nActions = this._nActiveActions;
+
+			for (var i = nActions - 1; i >= 0; --i) {
+				actions[i].stop();
+			}
+
+			return this;
+		} // advance the time and update apply the animation
+		;
+
+		_proto.update = function update(deltaTime) {
+			deltaTime *= this.timeScale;
+			var actions = this._actions,
+					nActions = this._nActiveActions,
+					time = this.time += deltaTime,
+					timeDirection = Math.sign(deltaTime),
+					accuIndex = this._accuIndex ^= 1; // run active actions
+
+			for (var i = 0; i !== nActions; ++i) {
+				var action = actions[i];
+
+				action._update(time, deltaTime, timeDirection, accuIndex);
+			} // update scene graph
+
+
+			var bindings = this._bindings,
+					nBindings = this._nActiveBindings;
+
+			for (var _i = 0; _i !== nBindings; ++_i) {
+				bindings[_i].apply(accuIndex);
+			}
+
+			return this;
+		} // Allows you to seek to a specific time in an animation.
+		;
+
+		_proto.setTime = function setTime(timeInSeconds) {
+			this.time = 0; // Zero out time attribute for AnimationMixer object;
+
+			for (var i = 0; i < this._actions.length; i++) {
+				this._actions[i].time = 0; // Zero out time attribute for all associated AnimationAction objects.
+			}
+
+			return this.update(timeInSeconds); // Update used to set exact time. Returns "this" AnimationMixer object.
+		} // return this mixer's root target object
+		;
+
+		_proto.getRoot = function getRoot() {
+			return this._root;
+		} // free all resources specific to a particular clip
+		;
+
+		_proto.uncacheClip = function uncacheClip(clip) {
+			var actions = this._actions,
+					clipUuid = clip.uuid,
+					actionsByClip = this._actionsByClip,
+					actionsForClip = actionsByClip[clipUuid];
+
+			if (actionsForClip !== undefined) {
+				// note: just calling _removeInactiveAction would mess up the
+				// iteration state and also require updating the state we can
+				// just throw away
+				var actionsToRemove = actionsForClip.knownActions;
+
+				for (var i = 0, n = actionsToRemove.length; i !== n; ++i) {
+					var action = actionsToRemove[i];
+
+					this._deactivateAction(action);
+
+					var cacheIndex = action._cacheIndex,
+							lastInactiveAction = actions[actions.length - 1];
+					action._cacheIndex = null;
+					action._byClipCacheIndex = null;
+					lastInactiveAction._cacheIndex = cacheIndex;
+					actions[cacheIndex] = lastInactiveAction;
+					actions.pop();
+
+					this._removeInactiveBindingsForAction(action);
+				}
+
+				delete actionsByClip[clipUuid];
+			}
+		} // free all resources specific to a particular root target object
+		;
+
+		_proto.uncacheRoot = function uncacheRoot(root) {
+			var rootUuid = root.uuid,
+					actionsByClip = this._actionsByClip;
+
+			for (var clipUuid in actionsByClip) {
+				var actionByRoot = actionsByClip[clipUuid].actionByRoot,
+						action = actionByRoot[rootUuid];
+
+				if (action !== undefined) {
+					this._deactivateAction(action);
+
+					this._removeInactiveAction(action);
+				}
+			}
+
+			var bindingsByRoot = this._bindingsByRootAndName,
+					bindingByName = bindingsByRoot[rootUuid];
+
+			if (bindingByName !== undefined) {
+				for (var trackName in bindingByName) {
+					var binding = bindingByName[trackName];
+					binding.restoreOriginalState();
+
+					this._removeInactiveBinding(binding);
+				}
+			}
+		} // remove a targeted clip from the cache
+		;
+
+		_proto.uncacheAction = function uncacheAction(clip, optionalRoot) {
+			var action = this.existingAction(clip, optionalRoot);
+
+			if (action !== null) {
+				this._deactivateAction(action);
+
+				this._removeInactiveAction(action);
+			}
+		};
+
+		return AnimationMixer;
+	}(EventDispatcher);
+
+	AnimationMixer.prototype._controlInterpolantsResultBuffer = new Float32Array(1);
+
+	var Uniform = /*#__PURE__*/function () {
+		function Uniform(value) {
+			if (typeof value === 'string') {
+				console.warn('THREE.Uniform: Type parameter is no longer needed.');
+				value = arguments[1];
+			}
+
+			this.value = value;
+		}
+
+		var _proto = Uniform.prototype;
+
+		_proto.clone = function clone() {
+			return new Uniform(this.value.clone === undefined ? this.value : this.value.clone());
+		};
+
+		return Uniform;
+	}();
+
+	function InstancedInterleavedBuffer(array, stride, meshPerAttribute) {
+		InterleavedBuffer.call(this, array, stride);
+		this.meshPerAttribute = meshPerAttribute || 1;
+	}
+
+	InstancedInterleavedBuffer.prototype = Object.assign(Object.create(InterleavedBuffer.prototype), {
+		constructor: InstancedInterleavedBuffer,
+		isInstancedInterleavedBuffer: true,
+		copy: function copy(source) {
+			InterleavedBuffer.prototype.copy.call(this, source);
+			this.meshPerAttribute = source.meshPerAttribute;
+			return this;
+		},
+		clone: function clone(data) {
+			var ib = InterleavedBuffer.prototype.clone.call(this, data);
+			ib.meshPerAttribute = this.meshPerAttribute;
+			return ib;
+		},
+		toJSON: function toJSON(data) {
+			var json = InterleavedBuffer.prototype.toJSON.call(this, data);
+			json.isInstancedInterleavedBuffer = true;
+			json.meshPerAttribute = this.meshPerAttribute;
+			return json;
+		}
+	});
+
+	function GLBufferAttribute(buffer, type, itemSize, elementSize, count) {
+		this.buffer = buffer;
+		this.type = type;
+		this.itemSize = itemSize;
+		this.elementSize = elementSize;
+		this.count = count;
+		this.version = 0;
+	}
+
+	Object.defineProperty(GLBufferAttribute.prototype, 'needsUpdate', {
+		set: function set(value) {
+			if (value === true) this.version++;
+		}
+	});
+	Object.assign(GLBufferAttribute.prototype, {
+		isGLBufferAttribute: true,
+		setBuffer: function setBuffer(buffer) {
+			this.buffer = buffer;
+			return this;
+		},
+		setType: function setType(type, elementSize) {
+			this.type = type;
+			this.elementSize = elementSize;
+			return this;
+		},
+		setItemSize: function setItemSize(itemSize) {
+			this.itemSize = itemSize;
+			return this;
+		},
+		setCount: function setCount(count) {
+			this.count = count;
+			return this;
+		}
+	});
+
+	function Raycaster(origin, direction, near, far) {
+		if (near === void 0) {
+			near = 0;
+		}
+
+		if (far === void 0) {
+			far = Infinity;
+		}
+
+		this.ray = new Ray(origin, direction); // direction is assumed to be normalized (for accurate distance calculations)
+
+		this.near = near;
+		this.far = far;
+		this.camera = null;
+		this.layers = new Layers();
+		this.params = {
+			Mesh: {},
+			Line: {
+				threshold: 1
+			},
+			LOD: {},
+			Points: {
+				threshold: 1
+			},
+			Sprite: {}
+		};
+		Object.defineProperties(this.params, {
+			PointCloud: {
+				get: function get() {
+					console.warn('THREE.Raycaster: params.PointCloud has been renamed to params.Points.');
+					return this.Points;
+				}
+			}
+		});
+	}
+
+	function ascSort(a, b) {
+		return a.distance - b.distance;
+	}
+
+	function _intersectObject(object, raycaster, intersects, recursive) {
+		if (object.layers.test(raycaster.layers)) {
+			object.raycast(raycaster, intersects);
+		}
+
+		if (recursive === true) {
+			var children = object.children;
+
+			for (var i = 0, l = children.length; i < l; i++) {
+				_intersectObject(children[i], raycaster, intersects, true);
+			}
+		}
+	}
+
+	Object.assign(Raycaster.prototype, {
+		set: function set(origin, direction) {
+			// direction is assumed to be normalized (for accurate distance calculations)
+			this.ray.set(origin, direction);
+		},
+		setFromCamera: function setFromCamera(coords, camera) {
+			if (camera && camera.isPerspectiveCamera) {
+				this.ray.origin.setFromMatrixPosition(camera.matrixWorld);
+				this.ray.direction.set(coords.x, coords.y, 0.5).unproject(camera).sub(this.ray.origin).normalize();
+				this.camera = camera;
+			} else if (camera && camera.isOrthographicCamera) {
+				this.ray.origin.set(coords.x, coords.y, (camera.near + camera.far) / (camera.near - camera.far)).unproject(camera); // set origin in plane of camera
+
+				this.ray.direction.set(0, 0, -1).transformDirection(camera.matrixWorld);
+				this.camera = camera;
+			} else {
+				console.error('THREE.Raycaster: Unsupported camera type: ' + camera.type);
+			}
+		},
+		intersectObject: function intersectObject(object, recursive, intersects) {
+			if (recursive === void 0) {
+				recursive = false;
+			}
+
+			if (intersects === void 0) {
+				intersects = [];
+			}
+
+			_intersectObject(object, this, intersects, recursive);
+
+			intersects.sort(ascSort);
+			return intersects;
+		},
+		intersectObjects: function intersectObjects(objects, recursive, intersects) {
+			if (recursive === void 0) {
+				recursive = false;
+			}
+
+			if (intersects === void 0) {
+				intersects = [];
+			}
+
+			for (var i = 0, l = objects.length; i < l; i++) {
+				_intersectObject(objects[i], this, intersects, recursive);
+			}
+
+			intersects.sort(ascSort);
+			return intersects;
+		}
+	});
+
+	/**
+	 * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
+	 *
+	 * The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
+	 * The azimuthal angle (theta) is measured from the positive z-axis.
+	 */
+
+	var Spherical = /*#__PURE__*/function () {
+		function Spherical(radius, phi, theta) {
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (phi === void 0) {
+				phi = 0;
+			}
+
+			if (theta === void 0) {
+				theta = 0;
+			}
+
+			this.radius = radius;
+			this.phi = phi; // polar angle
+
+			this.theta = theta; // azimuthal angle
+
+			return this;
+		}
+
+		var _proto = Spherical.prototype;
+
+		_proto.set = function set(radius, phi, theta) {
+			this.radius = radius;
+			this.phi = phi;
+			this.theta = theta;
+			return this;
+		};
+
+		_proto.copy = function copy(other) {
+			this.radius = other.radius;
+			this.phi = other.phi;
+			this.theta = other.theta;
+			return this;
+		} // restrict phi to be betwee EPS and PI-EPS
+		;
+
+		_proto.makeSafe = function makeSafe() {
+			var EPS = 0.000001;
+			this.phi = Math.max(EPS, Math.min(Math.PI - EPS, this.phi));
+			return this;
+		};
+
+		_proto.setFromVector3 = function setFromVector3(v) {
+			return this.setFromCartesianCoords(v.x, v.y, v.z);
+		};
+
+		_proto.setFromCartesianCoords = function setFromCartesianCoords(x, y, z) {
+			this.radius = Math.sqrt(x * x + y * y + z * z);
+
+			if (this.radius === 0) {
+				this.theta = 0;
+				this.phi = 0;
+			} else {
+				this.theta = Math.atan2(x, z);
+				this.phi = Math.acos(MathUtils.clamp(y / this.radius, -1, 1));
+			}
+
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		return Spherical;
+	}();
+
+	/**
+	 * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
+	 */
+	var Cylindrical = /*#__PURE__*/function () {
+		function Cylindrical(radius, theta, y) {
+			if (radius === void 0) {
+				radius = 1;
+			}
+
+			if (theta === void 0) {
+				theta = 0;
+			}
+
+			if (y === void 0) {
+				y = 0;
+			}
+
+			this.radius = radius; // distance from the origin to a point in the x-z plane
+
+			this.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
+
+			this.y = y; // height above the x-z plane
+
+			return this;
+		}
+
+		var _proto = Cylindrical.prototype;
+
+		_proto.set = function set(radius, theta, y) {
+			this.radius = radius;
+			this.theta = theta;
+			this.y = y;
+			return this;
+		};
+
+		_proto.copy = function copy(other) {
+			this.radius = other.radius;
+			this.theta = other.theta;
+			this.y = other.y;
+			return this;
+		};
+
+		_proto.setFromVector3 = function setFromVector3(v) {
+			return this.setFromCartesianCoords(v.x, v.y, v.z);
+		};
+
+		_proto.setFromCartesianCoords = function setFromCartesianCoords(x, y, z) {
+			this.radius = Math.sqrt(x * x + z * z);
+			this.theta = Math.atan2(x, z);
+			this.y = y;
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		return Cylindrical;
+	}();
+
+	var _vector$8 = /*@__PURE__*/new Vector2();
+
+	var Box2 = /*#__PURE__*/function () {
+		function Box2(min, max) {
+			if (min === void 0) {
+				min = new Vector2(+Infinity, +Infinity);
+			}
+
+			if (max === void 0) {
+				max = new Vector2(-Infinity, -Infinity);
+			}
+
+			this.min = min;
+			this.max = max;
+		}
+
+		var _proto = Box2.prototype;
+
+		_proto.set = function set(min, max) {
+			this.min.copy(min);
+			this.max.copy(max);
+			return this;
+		};
+
+		_proto.setFromPoints = function setFromPoints(points) {
+			this.makeEmpty();
+
+			for (var i = 0, il = points.length; i < il; i++) {
+				this.expandByPoint(points[i]);
+			}
+
+			return this;
+		};
+
+		_proto.setFromCenterAndSize = function setFromCenterAndSize(center, size) {
+			var halfSize = _vector$8.copy(size).multiplyScalar(0.5);
+
+			this.min.copy(center).sub(halfSize);
+			this.max.copy(center).add(halfSize);
+			return this;
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		_proto.copy = function copy(box) {
+			this.min.copy(box.min);
+			this.max.copy(box.max);
+			return this;
+		};
+
+		_proto.makeEmpty = function makeEmpty() {
+			this.min.x = this.min.y = +Infinity;
+			this.max.x = this.max.y = -Infinity;
+			return this;
+		};
+
+		_proto.isEmpty = function isEmpty() {
+			// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
+			return this.max.x < this.min.x || this.max.y < this.min.y;
+		};
+
+		_proto.getCenter = function getCenter(target) {
+			if (target === undefined) {
+				console.warn('THREE.Box2: .getCenter() target is now required');
+				target = new Vector2();
+			}
+
+			return this.isEmpty() ? target.set(0, 0) : target.addVectors(this.min, this.max).multiplyScalar(0.5);
+		};
+
+		_proto.getSize = function getSize(target) {
+			if (target === undefined) {
+				console.warn('THREE.Box2: .getSize() target is now required');
+				target = new Vector2();
+			}
+
+			return this.isEmpty() ? target.set(0, 0) : target.subVectors(this.max, this.min);
+		};
+
+		_proto.expandByPoint = function expandByPoint(point) {
+			this.min.min(point);
+			this.max.max(point);
+			return this;
+		};
+
+		_proto.expandByVector = function expandByVector(vector) {
+			this.min.sub(vector);
+			this.max.add(vector);
+			return this;
+		};
+
+		_proto.expandByScalar = function expandByScalar(scalar) {
+			this.min.addScalar(-scalar);
+			this.max.addScalar(scalar);
+			return this;
+		};
+
+		_proto.containsPoint = function containsPoint(point) {
+			return point.x < this.min.x || point.x > this.max.x || point.y < this.min.y || point.y > this.max.y ? false : true;
+		};
+
+		_proto.containsBox = function containsBox(box) {
+			return this.min.x <= box.min.x && box.max.x <= this.max.x && this.min.y <= box.min.y && box.max.y <= this.max.y;
+		};
+
+		_proto.getParameter = function getParameter(point, target) {
+			// This can potentially have a divide by zero if the box
+			// has a size dimension of 0.
+			if (target === undefined) {
+				console.warn('THREE.Box2: .getParameter() target is now required');
+				target = new Vector2();
+			}
+
+			return target.set((point.x - this.min.x) / (this.max.x - this.min.x), (point.y - this.min.y) / (this.max.y - this.min.y));
+		};
+
+		_proto.intersectsBox = function intersectsBox(box) {
+			// using 4 splitting planes to rule out intersections
+			return box.max.x < this.min.x || box.min.x > this.max.x || box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
+		};
+
+		_proto.clampPoint = function clampPoint(point, target) {
+			if (target === undefined) {
+				console.warn('THREE.Box2: .clampPoint() target is now required');
+				target = new Vector2();
+			}
+
+			return target.copy(point).clamp(this.min, this.max);
+		};
+
+		_proto.distanceToPoint = function distanceToPoint(point) {
+			var clampedPoint = _vector$8.copy(point).clamp(this.min, this.max);
+
+			return clampedPoint.sub(point).length();
+		};
+
+		_proto.intersect = function intersect(box) {
+			this.min.max(box.min);
+			this.max.min(box.max);
+			return this;
+		};
+
+		_proto.union = function union(box) {
+			this.min.min(box.min);
+			this.max.max(box.max);
+			return this;
+		};
+
+		_proto.translate = function translate(offset) {
+			this.min.add(offset);
+			this.max.add(offset);
+			return this;
+		};
+
+		_proto.equals = function equals(box) {
+			return box.min.equals(this.min) && box.max.equals(this.max);
+		};
+
+		return Box2;
+	}();
+
+	Box2.prototype.isBox2 = true;
+
+	var _startP = /*@__PURE__*/new Vector3();
+
+	var _startEnd = /*@__PURE__*/new Vector3();
+
+	var Line3 = /*#__PURE__*/function () {
+		function Line3(start, end) {
+			if (start === void 0) {
+				start = new Vector3();
+			}
+
+			if (end === void 0) {
+				end = new Vector3();
+			}
+
+			this.start = start;
+			this.end = end;
+		}
+
+		var _proto = Line3.prototype;
+
+		_proto.set = function set(start, end) {
+			this.start.copy(start);
+			this.end.copy(end);
+			return this;
+		};
+
+		_proto.copy = function copy(line) {
+			this.start.copy(line.start);
+			this.end.copy(line.end);
+			return this;
+		};
+
+		_proto.getCenter = function getCenter(target) {
+			if (target === undefined) {
+				console.warn('THREE.Line3: .getCenter() target is now required');
+				target = new Vector3();
+			}
+
+			return target.addVectors(this.start, this.end).multiplyScalar(0.5);
+		};
+
+		_proto.delta = function delta(target) {
+			if (target === undefined) {
+				console.warn('THREE.Line3: .delta() target is now required');
+				target = new Vector3();
+			}
+
+			return target.subVectors(this.end, this.start);
+		};
+
+		_proto.distanceSq = function distanceSq() {
+			return this.start.distanceToSquared(this.end);
+		};
+
+		_proto.distance = function distance() {
+			return this.start.distanceTo(this.end);
+		};
+
+		_proto.at = function at(t, target) {
+			if (target === undefined) {
+				console.warn('THREE.Line3: .at() target is now required');
+				target = new Vector3();
+			}
+
+			return this.delta(target).multiplyScalar(t).add(this.start);
+		};
+
+		_proto.closestPointToPointParameter = function closestPointToPointParameter(point, clampToLine) {
+			_startP.subVectors(point, this.start);
+
+			_startEnd.subVectors(this.end, this.start);
+
+			var startEnd2 = _startEnd.dot(_startEnd);
+
+			var startEnd_startP = _startEnd.dot(_startP);
+
+			var t = startEnd_startP / startEnd2;
+
+			if (clampToLine) {
+				t = MathUtils.clamp(t, 0, 1);
+			}
+
+			return t;
+		};
+
+		_proto.closestPointToPoint = function closestPointToPoint(point, clampToLine, target) {
+			var t = this.closestPointToPointParameter(point, clampToLine);
+
+			if (target === undefined) {
+				console.warn('THREE.Line3: .closestPointToPoint() target is now required');
+				target = new Vector3();
+			}
+
+			return this.delta(target).multiplyScalar(t).add(this.start);
+		};
+
+		_proto.applyMatrix4 = function applyMatrix4(matrix) {
+			this.start.applyMatrix4(matrix);
+			this.end.applyMatrix4(matrix);
+			return this;
+		};
+
+		_proto.equals = function equals(line) {
+			return line.start.equals(this.start) && line.end.equals(this.end);
+		};
+
+		_proto.clone = function clone() {
+			return new this.constructor().copy(this);
+		};
+
+		return Line3;
+	}();
+
+	function ImmediateRenderObject(material) {
+		Object3D.call(this);
+		this.material = material;
+
+		this.render = function ()
+		/* renderCallback */
+		{};
+
+		this.hasPositions = false;
+		this.hasNormals = false;
+		this.hasColors = false;
+		this.hasUvs = false;
+		this.positionArray = null;
+		this.normalArray = null;
+		this.colorArray = null;
+		this.uvArray = null;
+		this.count = 0;
+	}
+
+	ImmediateRenderObject.prototype = Object.create(Object3D.prototype);
+	ImmediateRenderObject.prototype.constructor = ImmediateRenderObject;
+	ImmediateRenderObject.prototype.isImmediateRenderObject = true;
+
+	var _vector$9 = /*@__PURE__*/new Vector3();
+
+	var SpotLightHelper = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(SpotLightHelper, _Object3D);
+
+		function SpotLightHelper(light, color) {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.light = light;
+
+			_this.light.updateMatrixWorld();
+
+			_this.matrix = light.matrixWorld;
+			_this.matrixAutoUpdate = false;
+			_this.color = color;
+			var geometry = new BufferGeometry();
+			var positions = [0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, -1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, -1, 1];
+
+			for (var i = 0, j = 1, l = 32; i < l; i++, j++) {
+				var p1 = i / l * Math.PI * 2;
+				var p2 = j / l * Math.PI * 2;
+				positions.push(Math.cos(p1), Math.sin(p1), 1, Math.cos(p2), Math.sin(p2), 1);
+			}
+
+			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
+			var material = new LineBasicMaterial({
+				fog: false,
+				toneMapped: false
+			});
+			_this.cone = new LineSegments(geometry, material);
+
+			_this.add(_this.cone);
+
+			_this.update();
+
+			return _this;
+		}
+
+		var _proto = SpotLightHelper.prototype;
+
+		_proto.dispose = function dispose() {
+			this.cone.geometry.dispose();
+			this.cone.material.dispose();
+		};
+
+		_proto.update = function update() {
+			this.light.updateMatrixWorld();
+			var coneLength = this.light.distance ? this.light.distance : 1000;
+			var coneWidth = coneLength * Math.tan(this.light.angle);
+			this.cone.scale.set(coneWidth, coneWidth, coneLength);
+
+			_vector$9.setFromMatrixPosition(this.light.target.matrixWorld);
+
+			this.cone.lookAt(_vector$9);
+
+			if (this.color !== undefined) {
+				this.cone.material.color.set(this.color);
+			} else {
+				this.cone.material.color.copy(this.light.color);
+			}
+		};
+
+		return SpotLightHelper;
+	}(Object3D);
+
+	var _vector$a = /*@__PURE__*/new Vector3();
+
+	var _boneMatrix = /*@__PURE__*/new Matrix4();
+
+	var _matrixWorldInv = /*@__PURE__*/new Matrix4();
+
+	var SkeletonHelper = /*#__PURE__*/function (_LineSegments) {
+		_inheritsLoose(SkeletonHelper, _LineSegments);
+
+		function SkeletonHelper(object) {
+			var _this;
+
+			var bones = getBoneList(object);
+			var geometry = new BufferGeometry();
+			var vertices = [];
+			var colors = [];
+			var color1 = new Color(0, 0, 1);
+			var color2 = new Color(0, 1, 0);
+
+			for (var i = 0; i < bones.length; i++) {
+				var bone = bones[i];
+
+				if (bone.parent && bone.parent.isBone) {
+					vertices.push(0, 0, 0);
+					vertices.push(0, 0, 0);
+					colors.push(color1.r, color1.g, color1.b);
+					colors.push(color2.r, color2.g, color2.b);
+				}
+			}
+
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			var material = new LineBasicMaterial({
+				vertexColors: true,
+				depthTest: false,
+				depthWrite: false,
+				toneMapped: false,
+				transparent: true
+			});
+			_this = _LineSegments.call(this, geometry, material) || this;
+			_this.type = 'SkeletonHelper';
+			_this.isSkeletonHelper = true;
+			_this.root = object;
+			_this.bones = bones;
+			_this.matrix = object.matrixWorld;
+			_this.matrixAutoUpdate = false;
+			return _this;
+		}
+
+		var _proto = SkeletonHelper.prototype;
+
+		_proto.updateMatrixWorld = function updateMatrixWorld(force) {
+			var bones = this.bones;
+			var geometry = this.geometry;
+			var position = geometry.getAttribute('position');
+
+			_matrixWorldInv.copy(this.root.matrixWorld).invert();
+
+			for (var i = 0, j = 0; i < bones.length; i++) {
+				var bone = bones[i];
+
+				if (bone.parent && bone.parent.isBone) {
+					_boneMatrix.multiplyMatrices(_matrixWorldInv, bone.matrixWorld);
+
+					_vector$a.setFromMatrixPosition(_boneMatrix);
+
+					position.setXYZ(j, _vector$a.x, _vector$a.y, _vector$a.z);
+
+					_boneMatrix.multiplyMatrices(_matrixWorldInv, bone.parent.matrixWorld);
+
+					_vector$a.setFromMatrixPosition(_boneMatrix);
+
+					position.setXYZ(j + 1, _vector$a.x, _vector$a.y, _vector$a.z);
+					j += 2;
+				}
+			}
+
+			geometry.getAttribute('position').needsUpdate = true;
+
+			_LineSegments.prototype.updateMatrixWorld.call(this, force);
+		};
+
+		return SkeletonHelper;
+	}(LineSegments);
+
+	function getBoneList(object) {
+		var boneList = [];
+
+		if (object && object.isBone) {
+			boneList.push(object);
+		}
+
+		for (var i = 0; i < object.children.length; i++) {
+			boneList.push.apply(boneList, getBoneList(object.children[i]));
+		}
+
+		return boneList;
+	}
+
+	var PointLightHelper = /*#__PURE__*/function (_Mesh) {
+		_inheritsLoose(PointLightHelper, _Mesh);
+
+		function PointLightHelper(light, sphereSize, color) {
+			var _this;
+
+			var geometry = new SphereGeometry(sphereSize, 4, 2);
+			var material = new MeshBasicMaterial({
+				wireframe: true,
+				fog: false,
+				toneMapped: false
+			});
+			_this = _Mesh.call(this, geometry, material) || this;
+			_this.light = light;
+
+			_this.light.updateMatrixWorld();
+
+			_this.color = color;
+			_this.type = 'PointLightHelper';
+			_this.matrix = _this.light.matrixWorld;
+			_this.matrixAutoUpdate = false;
+
+			_this.update();
+			/*
+			// TODO: delete this comment?
+			const distanceGeometry = new THREE.IcosahedronBufferGeometry( 1, 2 );
+			const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );
+			this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
+			this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );
+			const d = light.distance;
+			if ( d === 0.0 ) {
+				this.lightDistance.visible = false;
+			} else {
+				this.lightDistance.scale.set( d, d, d );
+			}
+			this.add( this.lightDistance );
+			*/
+
+
+			return _this;
+		}
+
+		var _proto = PointLightHelper.prototype;
+
+		_proto.dispose = function dispose() {
+			this.geometry.dispose();
+			this.material.dispose();
+		};
+
+		_proto.update = function update() {
+			if (this.color !== undefined) {
+				this.material.color.set(this.color);
+			} else {
+				this.material.color.copy(this.light.color);
+			}
+			/*
+			const d = this.light.distance;
+				if ( d === 0.0 ) {
+					this.lightDistance.visible = false;
+				} else {
+					this.lightDistance.visible = true;
+				this.lightDistance.scale.set( d, d, d );
+				}
+			*/
+
+		};
+
+		return PointLightHelper;
+	}(Mesh);
+
+	var _vector$b = /*@__PURE__*/new Vector3();
+
+	var _color1 = /*@__PURE__*/new Color();
+
+	var _color2 = /*@__PURE__*/new Color();
+
+	var HemisphereLightHelper = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(HemisphereLightHelper, _Object3D);
+
+		function HemisphereLightHelper(light, size, color) {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.light = light;
+
+			_this.light.updateMatrixWorld();
+
+			_this.matrix = light.matrixWorld;
+			_this.matrixAutoUpdate = false;
+			_this.color = color;
+			var geometry = new OctahedronGeometry(size);
+			geometry.rotateY(Math.PI * 0.5);
+			_this.material = new MeshBasicMaterial({
+				wireframe: true,
+				fog: false,
+				toneMapped: false
+			});
+			if (_this.color === undefined) _this.material.vertexColors = true;
+			var position = geometry.getAttribute('position');
+			var colors = new Float32Array(position.count * 3);
+			geometry.setAttribute('color', new BufferAttribute(colors, 3));
+
+			_this.add(new Mesh(geometry, _this.material));
+
+			_this.update();
+
+			return _this;
+		}
+
+		var _proto = HemisphereLightHelper.prototype;
+
+		_proto.dispose = function dispose() {
+			this.children[0].geometry.dispose();
+			this.children[0].material.dispose();
+		};
+
+		_proto.update = function update() {
+			var mesh = this.children[0];
+
+			if (this.color !== undefined) {
+				this.material.color.set(this.color);
+			} else {
+				var colors = mesh.geometry.getAttribute('color');
+
+				_color1.copy(this.light.color);
+
+				_color2.copy(this.light.groundColor);
+
+				for (var i = 0, l = colors.count; i < l; i++) {
+					var color = i < l / 2 ? _color1 : _color2;
+					colors.setXYZ(i, color.r, color.g, color.b);
+				}
+
+				colors.needsUpdate = true;
+			}
+
+			mesh.lookAt(_vector$b.setFromMatrixPosition(this.light.matrixWorld).negate());
+		};
+
+		return HemisphereLightHelper;
+	}(Object3D);
+
+	var GridHelper = /*#__PURE__*/function (_LineSegments) {
+		_inheritsLoose(GridHelper, _LineSegments);
+
+		function GridHelper(size, divisions, color1, color2) {
+			var _this;
+
+			if (size === void 0) {
+				size = 10;
+			}
+
+			if (divisions === void 0) {
+				divisions = 10;
+			}
+
+			if (color1 === void 0) {
+				color1 = 0x444444;
+			}
+
+			if (color2 === void 0) {
+				color2 = 0x888888;
+			}
+
+			color1 = new Color(color1);
+			color2 = new Color(color2);
+			var center = divisions / 2;
+			var step = size / divisions;
+			var halfSize = size / 2;
+			var vertices = [],
+					colors = [];
+
+			for (var i = 0, j = 0, k = -halfSize; i <= divisions; i++, k += step) {
+				vertices.push(-halfSize, 0, k, halfSize, 0, k);
+				vertices.push(k, 0, -halfSize, k, 0, halfSize);
+				var color = i === center ? color1 : color2;
+				color.toArray(colors, j);
+				j += 3;
+				color.toArray(colors, j);
+				j += 3;
+				color.toArray(colors, j);
+				j += 3;
+				color.toArray(colors, j);
+				j += 3;
+			}
+
+			var geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			var material = new LineBasicMaterial({
+				vertexColors: true,
+				toneMapped: false
+			});
+			_this = _LineSegments.call(this, geometry, material) || this;
+			_this.type = 'GridHelper';
+			return _this;
+		}
+
+		return GridHelper;
+	}(LineSegments);
+
+	var PolarGridHelper = /*#__PURE__*/function (_LineSegments) {
+		_inheritsLoose(PolarGridHelper, _LineSegments);
+
+		function PolarGridHelper(radius, radials, circles, divisions, color1, color2) {
+			var _this;
+
+			if (radius === void 0) {
+				radius = 10;
+			}
+
+			if (radials === void 0) {
+				radials = 16;
+			}
+
+			if (circles === void 0) {
+				circles = 8;
+			}
+
+			if (divisions === void 0) {
+				divisions = 64;
+			}
+
+			if (color1 === void 0) {
+				color1 = 0x444444;
+			}
+
+			if (color2 === void 0) {
+				color2 = 0x888888;
+			}
+
+			color1 = new Color(color1);
+			color2 = new Color(color2);
+			var vertices = [];
+			var colors = []; // create the radials
+
+			for (var i = 0; i <= radials; i++) {
+				var v = i / radials * (Math.PI * 2);
+				var x = Math.sin(v) * radius;
+				var z = Math.cos(v) * radius;
+				vertices.push(0, 0, 0);
+				vertices.push(x, 0, z);
+				var color = i & 1 ? color1 : color2;
+				colors.push(color.r, color.g, color.b);
+				colors.push(color.r, color.g, color.b);
+			} // create the circles
+
+
+			for (var _i = 0; _i <= circles; _i++) {
+				var _color = _i & 1 ? color1 : color2;
+
+				var r = radius - radius / circles * _i;
+
+				for (var j = 0; j < divisions; j++) {
+					// first vertex
+					var _v = j / divisions * (Math.PI * 2);
+
+					var _x = Math.sin(_v) * r;
+
+					var _z = Math.cos(_v) * r;
+
+					vertices.push(_x, 0, _z);
+					colors.push(_color.r, _color.g, _color.b); // second vertex
+
+					_v = (j + 1) / divisions * (Math.PI * 2);
+					_x = Math.sin(_v) * r;
+					_z = Math.cos(_v) * r;
+					vertices.push(_x, 0, _z);
+					colors.push(_color.r, _color.g, _color.b);
+				}
+			}
+
+			var geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			var material = new LineBasicMaterial({
+				vertexColors: true,
+				toneMapped: false
+			});
+			_this = _LineSegments.call(this, geometry, material) || this;
+			_this.type = 'PolarGridHelper';
+			return _this;
+		}
+
+		return PolarGridHelper;
+	}(LineSegments);
+
+	var _v1$6 = /*@__PURE__*/new Vector3();
+
+	var _v2$3 = /*@__PURE__*/new Vector3();
+
+	var _v3$1 = /*@__PURE__*/new Vector3();
+
+	var DirectionalLightHelper = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(DirectionalLightHelper, _Object3D);
+
+		function DirectionalLightHelper(light, size, color) {
+			var _this;
+
+			_this = _Object3D.call(this) || this;
+			_this.light = light;
+
+			_this.light.updateMatrixWorld();
+
+			_this.matrix = light.matrixWorld;
+			_this.matrixAutoUpdate = false;
+			_this.color = color;
+			if (size === undefined) size = 1;
+			var geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute([-size, size, 0, size, size, 0, size, -size, 0, -size, -size, 0, -size, size, 0], 3));
+			var material = new LineBasicMaterial({
+				fog: false,
+				toneMapped: false
+			});
+			_this.lightPlane = new Line(geometry, material);
+
+			_this.add(_this.lightPlane);
+
+			geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 0, 0, 1], 3));
+			_this.targetLine = new Line(geometry, material);
+
+			_this.add(_this.targetLine);
+
+			_this.update();
+
+			return _this;
+		}
+
+		var _proto = DirectionalLightHelper.prototype;
+
+		_proto.dispose = function dispose() {
+			this.lightPlane.geometry.dispose();
+			this.lightPlane.material.dispose();
+			this.targetLine.geometry.dispose();
+			this.targetLine.material.dispose();
+		};
+
+		_proto.update = function update() {
+			_v1$6.setFromMatrixPosition(this.light.matrixWorld);
+
+			_v2$3.setFromMatrixPosition(this.light.target.matrixWorld);
+
+			_v3$1.subVectors(_v2$3, _v1$6);
+
+			this.lightPlane.lookAt(_v2$3);
+
+			if (this.color !== undefined) {
+				this.lightPlane.material.color.set(this.color);
+				this.targetLine.material.color.set(this.color);
+			} else {
+				this.lightPlane.material.color.copy(this.light.color);
+				this.targetLine.material.color.copy(this.light.color);
+			}
+
+			this.targetLine.lookAt(_v2$3);
+			this.targetLine.scale.z = _v3$1.length();
+		};
+
+		return DirectionalLightHelper;
+	}(Object3D);
+
+	var _vector$c = /*@__PURE__*/new Vector3();
+
+	var _camera = /*@__PURE__*/new Camera();
+	/**
+	 *	- shows frustum, line of sight and up of the camera
+	 *	- suitable for fast updates
+	 * 	- based on frustum visualization in lightgl.js shadowmap example
+	 *		http://evanw.github.com/lightgl.js/tests/shadowmap.html
+	 */
+
+
+	var CameraHelper = /*#__PURE__*/function (_LineSegments) {
+		_inheritsLoose(CameraHelper, _LineSegments);
+
+		function CameraHelper(camera) {
+			var _this;
+
+			var geometry = new BufferGeometry();
+			var material = new LineBasicMaterial({
+				color: 0xffffff,
+				vertexColors: true,
+				toneMapped: false
+			});
+			var vertices = [];
+			var colors = [];
+			var pointMap = {}; // colors
+
+			var colorFrustum = new Color(0xffaa00);
+			var colorCone = new Color(0xff0000);
+			var colorUp = new Color(0x00aaff);
+			var colorTarget = new Color(0xffffff);
+			var colorCross = new Color(0x333333); // near
+
+			addLine('n1', 'n2', colorFrustum);
+			addLine('n2', 'n4', colorFrustum);
+			addLine('n4', 'n3', colorFrustum);
+			addLine('n3', 'n1', colorFrustum); // far
+
+			addLine('f1', 'f2', colorFrustum);
+			addLine('f2', 'f4', colorFrustum);
+			addLine('f4', 'f3', colorFrustum);
+			addLine('f3', 'f1', colorFrustum); // sides
+
+			addLine('n1', 'f1', colorFrustum);
+			addLine('n2', 'f2', colorFrustum);
+			addLine('n3', 'f3', colorFrustum);
+			addLine('n4', 'f4', colorFrustum); // cone
+
+			addLine('p', 'n1', colorCone);
+			addLine('p', 'n2', colorCone);
+			addLine('p', 'n3', colorCone);
+			addLine('p', 'n4', colorCone); // up
+
+			addLine('u1', 'u2', colorUp);
+			addLine('u2', 'u3', colorUp);
+			addLine('u3', 'u1', colorUp); // target
+
+			addLine('c', 't', colorTarget);
+			addLine('p', 'c', colorCross); // cross
+
+			addLine('cn1', 'cn2', colorCross);
+			addLine('cn3', 'cn4', colorCross);
+			addLine('cf1', 'cf2', colorCross);
+			addLine('cf3', 'cf4', colorCross);
+
+			function addLine(a, b, color) {
+				addPoint(a, color);
+				addPoint(b, color);
+			}
+
+			function addPoint(id, color) {
+				vertices.push(0, 0, 0);
+				colors.push(color.r, color.g, color.b);
+
+				if (pointMap[id] === undefined) {
+					pointMap[id] = [];
+				}
+
+				pointMap[id].push(vertices.length / 3 - 1);
+			}
+
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			_this = _LineSegments.call(this, geometry, material) || this;
+			_this.type = 'CameraHelper';
+			_this.camera = camera;
+			if (_this.camera.updateProjectionMatrix) _this.camera.updateProjectionMatrix();
+			_this.matrix = camera.matrixWorld;
+			_this.matrixAutoUpdate = false;
+			_this.pointMap = pointMap;
+
+			_this.update();
+
+			return _this;
+		}
+
+		var _proto = CameraHelper.prototype;
+
+		_proto.update = function update() {
+			var geometry = this.geometry;
+			var pointMap = this.pointMap;
+			var w = 1,
+					h = 1; // we need just camera projection matrix inverse
+			// world matrix must be identity
+
+			_camera.projectionMatrixInverse.copy(this.camera.projectionMatrixInverse); // center / target
+
+
+			setPoint('c', pointMap, geometry, _camera, 0, 0, -1);
+			setPoint('t', pointMap, geometry, _camera, 0, 0, 1); // near
+
+			setPoint('n1', pointMap, geometry, _camera, -w, -h, -1);
+			setPoint('n2', pointMap, geometry, _camera, w, -h, -1);
+			setPoint('n3', pointMap, geometry, _camera, -w, h, -1);
+			setPoint('n4', pointMap, geometry, _camera, w, h, -1); // far
+
+			setPoint('f1', pointMap, geometry, _camera, -w, -h, 1);
+			setPoint('f2', pointMap, geometry, _camera, w, -h, 1);
+			setPoint('f3', pointMap, geometry, _camera, -w, h, 1);
+			setPoint('f4', pointMap, geometry, _camera, w, h, 1); // up
+
+			setPoint('u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, -1);
+			setPoint('u2', pointMap, geometry, _camera, -w * 0.7, h * 1.1, -1);
+			setPoint('u3', pointMap, geometry, _camera, 0, h * 2, -1); // cross
+
+			setPoint('cf1', pointMap, geometry, _camera, -w, 0, 1);
+			setPoint('cf2', pointMap, geometry, _camera, w, 0, 1);
+			setPoint('cf3', pointMap, geometry, _camera, 0, -h, 1);
+			setPoint('cf4', pointMap, geometry, _camera, 0, h, 1);
+			setPoint('cn1', pointMap, geometry, _camera, -w, 0, -1);
+			setPoint('cn2', pointMap, geometry, _camera, w, 0, -1);
+			setPoint('cn3', pointMap, geometry, _camera, 0, -h, -1);
+			setPoint('cn4', pointMap, geometry, _camera, 0, h, -1);
+			geometry.getAttribute('position').needsUpdate = true;
+		};
+
+		return CameraHelper;
+	}(LineSegments);
+
+	function setPoint(point, pointMap, geometry, camera, x, y, z) {
+		_vector$c.set(x, y, z).unproject(camera);
+
+		var points = pointMap[point];
+
+		if (points !== undefined) {
+			var position = geometry.getAttribute('position');
+
+			for (var i = 0, l = points.length; i < l; i++) {
+				position.setXYZ(points[i], _vector$c.x, _vector$c.y, _vector$c.z);
+			}
+		}
+	}
+
+	var _box$3 = /*@__PURE__*/new Box3();
+
+	var BoxHelper = /*#__PURE__*/function (_LineSegments) {
+		_inheritsLoose(BoxHelper, _LineSegments);
+
+		function BoxHelper(object, color) {
+			var _this;
+
+			if (color === void 0) {
+				color = 0xffff00;
+			}
+
+			var indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
+			var positions = new Float32Array(8 * 3);
+			var geometry = new BufferGeometry();
+			geometry.setIndex(new BufferAttribute(indices, 1));
+			geometry.setAttribute('position', new BufferAttribute(positions, 3));
+			_this = _LineSegments.call(this, geometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			})) || this;
+			_this.object = object;
+			_this.type = 'BoxHelper';
+			_this.matrixAutoUpdate = false;
+
+			_this.update();
+
+			return _this;
+		}
+
+		var _proto = BoxHelper.prototype;
+
+		_proto.update = function update(object) {
+			if (object !== undefined) {
+				console.warn('THREE.BoxHelper: .update() has no longer arguments.');
+			}
+
+			if (this.object !== undefined) {
+				_box$3.setFromObject(this.object);
+			}
+
+			if (_box$3.isEmpty()) return;
+			var min = _box$3.min;
+			var max = _box$3.max;
+			/*
+				5____4
+			1/___0/|
+			| 6__|_7
+			2/___3/
+				0: max.x, max.y, max.z
+			1: min.x, max.y, max.z
+			2: min.x, min.y, max.z
+			3: max.x, min.y, max.z
+			4: max.x, max.y, min.z
+			5: min.x, max.y, min.z
+			6: min.x, min.y, min.z
+			7: max.x, min.y, min.z
+			*/
+
+			var position = this.geometry.attributes.position;
+			var array = position.array;
+			array[0] = max.x;
+			array[1] = max.y;
+			array[2] = max.z;
+			array[3] = min.x;
+			array[4] = max.y;
+			array[5] = max.z;
+			array[6] = min.x;
+			array[7] = min.y;
+			array[8] = max.z;
+			array[9] = max.x;
+			array[10] = min.y;
+			array[11] = max.z;
+			array[12] = max.x;
+			array[13] = max.y;
+			array[14] = min.z;
+			array[15] = min.x;
+			array[16] = max.y;
+			array[17] = min.z;
+			array[18] = min.x;
+			array[19] = min.y;
+			array[20] = min.z;
+			array[21] = max.x;
+			array[22] = min.y;
+			array[23] = min.z;
+			position.needsUpdate = true;
+			this.geometry.computeBoundingSphere();
+		};
+
+		_proto.setFromObject = function setFromObject(object) {
+			this.object = object;
+			this.update();
+			return this;
+		};
+
+		_proto.copy = function copy(source) {
+			LineSegments.prototype.copy.call(this, source);
+			this.object = source.object;
+			return this;
+		};
+
+		return BoxHelper;
+	}(LineSegments);
+
+	var Box3Helper = /*#__PURE__*/function (_LineSegments) {
+		_inheritsLoose(Box3Helper, _LineSegments);
+
+		function Box3Helper(box, color) {
+			var _this;
+
+			if (color === void 0) {
+				color = 0xffff00;
+			}
+
+			var indices = new Uint16Array([0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7]);
+			var positions = [1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, -1, -1, 1, -1, -1, -1, -1, 1, -1, -1];
+			var geometry = new BufferGeometry();
+			geometry.setIndex(new BufferAttribute(indices, 1));
+			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
+			_this = _LineSegments.call(this, geometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			})) || this;
+			_this.box = box;
+			_this.type = 'Box3Helper';
+
+			_this.geometry.computeBoundingSphere();
+
+			return _this;
+		}
+
+		var _proto = Box3Helper.prototype;
+
+		_proto.updateMatrixWorld = function updateMatrixWorld(force) {
+			var box = this.box;
+			if (box.isEmpty()) return;
+			box.getCenter(this.position);
+			box.getSize(this.scale);
+			this.scale.multiplyScalar(0.5);
+
+			_LineSegments.prototype.updateMatrixWorld.call(this, force);
+		};
+
+		return Box3Helper;
+	}(LineSegments);
+
+	var PlaneHelper = /*#__PURE__*/function (_Line) {
+		_inheritsLoose(PlaneHelper, _Line);
+
+		function PlaneHelper(plane, size, hex) {
+			var _this;
+
+			if (size === void 0) {
+				size = 1;
+			}
+
+			if (hex === void 0) {
+				hex = 0xffff00;
+			}
+
+			var color = hex;
+			var positions = [1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0];
+			var geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(positions, 3));
+			geometry.computeBoundingSphere();
+			_this = _Line.call(this, geometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			})) || this;
+			_this.type = 'PlaneHelper';
+			_this.plane = plane;
+			_this.size = size;
+			var positions2 = [1, 1, 1, -1, 1, 1, -1, -1, 1, 1, 1, 1, -1, -1, 1, 1, -1, 1];
+			var geometry2 = new BufferGeometry();
+			geometry2.setAttribute('position', new Float32BufferAttribute(positions2, 3));
+			geometry2.computeBoundingSphere();
+
+			_this.add(new Mesh(geometry2, new MeshBasicMaterial({
+				color: color,
+				opacity: 0.2,
+				transparent: true,
+				depthWrite: false,
+				toneMapped: false
+			})));
+
+			return _this;
+		}
+
+		var _proto = PlaneHelper.prototype;
+
+		_proto.updateMatrixWorld = function updateMatrixWorld(force) {
+			var scale = -this.plane.constant;
+			if (Math.abs(scale) < 1e-8) scale = 1e-8; // sign does not matter
+
+			this.scale.set(0.5 * this.size, 0.5 * this.size, scale);
+			this.children[0].material.side = scale < 0 ? BackSide : FrontSide; // renderer flips side when determinant < 0; flipping not wanted here
+
+			this.lookAt(this.plane.normal);
+
+			_Line.prototype.updateMatrixWorld.call(this, force);
+		};
+
+		return PlaneHelper;
+	}(Line);
+
+	var _axis = /*@__PURE__*/new Vector3();
+
+	var _lineGeometry, _coneGeometry;
+
+	var ArrowHelper = /*#__PURE__*/function (_Object3D) {
+		_inheritsLoose(ArrowHelper, _Object3D);
+
+		// dir is assumed to be normalized
+		function ArrowHelper(dir, origin, length, color, headLength, headWidth) {
+			var _this;
+
+			if (dir === void 0) {
+				dir = new Vector3(0, 0, 1);
+			}
+
+			if (origin === void 0) {
+				origin = new Vector3(0, 0, 0);
+			}
+
+			if (length === void 0) {
+				length = 1;
+			}
+
+			if (color === void 0) {
+				color = 0xffff00;
+			}
+
+			if (headLength === void 0) {
+				headLength = length * 0.2;
+			}
+
+			if (headWidth === void 0) {
+				headWidth = headLength * 0.2;
+			}
+
+			_this = _Object3D.call(this) || this;
+			_this.type = 'ArrowHelper';
+
+			if (_lineGeometry === undefined) {
+				_lineGeometry = new BufferGeometry();
+
+				_lineGeometry.setAttribute('position', new Float32BufferAttribute([0, 0, 0, 0, 1, 0], 3));
+
+				_coneGeometry = new CylinderGeometry(0, 0.5, 1, 5, 1);
+
+				_coneGeometry.translate(0, -0.5, 0);
+			}
+
+			_this.position.copy(origin);
+
+			_this.line = new Line(_lineGeometry, new LineBasicMaterial({
+				color: color,
+				toneMapped: false
+			}));
+			_this.line.matrixAutoUpdate = false;
+
+			_this.add(_this.line);
+
+			_this.cone = new Mesh(_coneGeometry, new MeshBasicMaterial({
+				color: color,
+				toneMapped: false
+			}));
+			_this.cone.matrixAutoUpdate = false;
+
+			_this.add(_this.cone);
+
+			_this.setDirection(dir);
+
+			_this.setLength(length, headLength, headWidth);
+
+			return _this;
+		}
+
+		var _proto = ArrowHelper.prototype;
+
+		_proto.setDirection = function setDirection(dir) {
+			// dir is assumed to be normalized
+			if (dir.y > 0.99999) {
+				this.quaternion.set(0, 0, 0, 1);
+			} else if (dir.y < -0.99999) {
+				this.quaternion.set(1, 0, 0, 0);
+			} else {
+				_axis.set(dir.z, 0, -dir.x).normalize();
+
+				var radians = Math.acos(dir.y);
+				this.quaternion.setFromAxisAngle(_axis, radians);
+			}
+		};
+
+		_proto.setLength = function setLength(length, headLength, headWidth) {
+			if (headLength === void 0) {
+				headLength = length * 0.2;
+			}
+
+			if (headWidth === void 0) {
+				headWidth = headLength * 0.2;
+			}
+
+			this.line.scale.set(1, Math.max(0.0001, length - headLength), 1); // see #17458
+
+			this.line.updateMatrix();
+			this.cone.scale.set(headWidth, headLength, headWidth);
+			this.cone.position.y = length;
+			this.cone.updateMatrix();
+		};
+
+		_proto.setColor = function setColor(color) {
+			this.line.material.color.set(color);
+			this.cone.material.color.set(color);
+		};
+
+		_proto.copy = function copy(source) {
+			_Object3D.prototype.copy.call(this, source, false);
+
+			this.line.copy(source.line);
+			this.cone.copy(source.cone);
+			return this;
+		};
+
+		return ArrowHelper;
+	}(Object3D);
+
+	var AxesHelper = /*#__PURE__*/function (_LineSegments) {
+		_inheritsLoose(AxesHelper, _LineSegments);
+
+		function AxesHelper(size) {
+			var _this;
+
+			if (size === void 0) {
+				size = 1;
+			}
+
+			var vertices = [0, 0, 0, size, 0, 0, 0, 0, 0, 0, size, 0, 0, 0, 0, 0, 0, size];
+			var colors = [1, 0, 0, 1, 0.6, 0, 0, 1, 0, 0.6, 1, 0, 0, 0, 1, 0, 0.6, 1];
+			var geometry = new BufferGeometry();
+			geometry.setAttribute('position', new Float32BufferAttribute(vertices, 3));
+			geometry.setAttribute('color', new Float32BufferAttribute(colors, 3));
+			var material = new LineBasicMaterial({
+				vertexColors: true,
+				toneMapped: false
+			});
+			_this = _LineSegments.call(this, geometry, material) || this;
+			_this.type = 'AxesHelper';
+			return _this;
+		}
+
+		return AxesHelper;
+	}(LineSegments);
+
+	var _floatView = new Float32Array(1);
+
+	var _int32View = new Int32Array(_floatView.buffer);
+
+	var DataUtils = {
+		// Converts float32 to float16 (stored as uint16 value).
+		toHalfFloat: function toHalfFloat(val) {
+			// Source: http://gamedev.stackexchange.com/questions/17326/conversion-of-a-number-from-single-precision-floating-point-representation-to-a/17410#17410
+
+			/* This method is faster than the OpenEXR implementation (very often
+			* used, eg. in Ogre), with the additional benefit of rounding, inspired
+			* by James Tursa?s half-precision code. */
+			_floatView[0] = val;
+			var x = _int32View[0];
+			var bits = x >> 16 & 0x8000;
+			/* Get the sign */
+
+			var m = x >> 12 & 0x07ff;
+			/* Keep one extra bit for rounding */
+
+			var e = x >> 23 & 0xff;
+			/* Using int is faster here */
+
+			/* If zero, or denormal, or exponent underflows too much for a denormal
+				* half, return signed zero. */
+
+			if (e < 103) return bits;
+			/* If NaN, return NaN. If Inf or exponent overflow, return Inf. */
+
+			if (e > 142) {
+				bits |= 0x7c00;
+				/* If exponent was 0xff and one mantissa bit was set, it means NaN,
+							* not Inf, so make sure we set one mantissa bit too. */
+
+				bits |= (e == 255 ? 0 : 1) && x & 0x007fffff;
+				return bits;
+			}
+			/* If exponent underflows but not too much, return a denormal */
+
+
+			if (e < 113) {
+				m |= 0x0800;
+				/* Extra rounding may overflow and set mantissa to 0 and exponent
+					* to 1, which is OK. */
+
+				bits |= (m >> 114 - e) + (m >> 113 - e & 1);
+				return bits;
+			}
+
+			bits |= e - 112 << 10 | m >> 1;
+			/* Extra rounding. An overflow will set mantissa to 0 and increment
+				* the exponent, which is OK. */
+
+			bits += m & 1;
+			return bits;
+		}
+	};
+
+	var _ENCODINGS;
+	var LOD_MIN = 4;
+	var LOD_MAX = 8;
+	var SIZE_MAX = Math.pow(2, LOD_MAX); // The standard deviations (radians) associated with the extra mips. These are
+	// chosen to approximate a Trowbridge-Reitz distribution function times the
+	// geometric shadowing function. These sigma values squared must match the
+	// variance #defines in cube_uv_reflection_fragment.glsl.js.
+
+	var EXTRA_LOD_SIGMA = [0.125, 0.215, 0.35, 0.446, 0.526, 0.582];
+	var TOTAL_LODS = LOD_MAX - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length; // The maximum length of the blur for loop. Smaller sigmas will use fewer
+	// samples and exit early, but not recompile the shader.
+
+	var MAX_SAMPLES = 20;
+	var ENCODINGS = (_ENCODINGS = {}, _ENCODINGS[LinearEncoding] = 0, _ENCODINGS[sRGBEncoding] = 1, _ENCODINGS[RGBEEncoding] = 2, _ENCODINGS[RGBM7Encoding] = 3, _ENCODINGS[RGBM16Encoding] = 4, _ENCODINGS[RGBDEncoding] = 5, _ENCODINGS[GammaEncoding] = 6, _ENCODINGS);
+	var backgroundMaterial = new MeshBasicMaterial({
+		side: BackSide,
+		depthWrite: false,
+		depthTest: false
+	});
+	var backgroundBox = new Mesh(new BoxGeometry(), backgroundMaterial);
+
+	var _flatCamera = /*@__PURE__*/new OrthographicCamera();
+
+	var _createPlanes2 = /*@__PURE__*/_createPlanes(),
+			_lodPlanes = _createPlanes2._lodPlanes,
+			_sizeLods = _createPlanes2._sizeLods,
+			_sigmas = _createPlanes2._sigmas;
+
+	var _clearColor = /*@__PURE__*/new Color();
+
+	var _oldTarget = null; // Golden Ratio
+
+	var PHI = (1 + Math.sqrt(5)) / 2;
+	var INV_PHI = 1 / PHI; // Vertices of a dodecahedron (except the opposites, which represent the
+	// same axis), used as axis directions evenly spread on a sphere.
+
+	var _axisDirections = [/*@__PURE__*/new Vector3(1, 1, 1), /*@__PURE__*/new Vector3(-1, 1, 1), /*@__PURE__*/new Vector3(1, 1, -1), /*@__PURE__*/new Vector3(-1, 1, -1), /*@__PURE__*/new Vector3(0, PHI, INV_PHI), /*@__PURE__*/new Vector3(0, PHI, -INV_PHI), /*@__PURE__*/new Vector3(INV_PHI, 0, PHI), /*@__PURE__*/new Vector3(-INV_PHI, 0, PHI), /*@__PURE__*/new Vector3(PHI, INV_PHI, 0), /*@__PURE__*/new Vector3(-PHI, INV_PHI, 0)];
+	/**
+	 * This class generates a Prefiltered, Mipmapped Radiance Environment Map
+	 * (PMREM) from a cubeMap environment texture. This allows different levels of
+	 * blur to be quickly accessed based on material roughness. It is packed into a
+	 * special CubeUV format that allows us to perform custom interpolation so that
+	 * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
+	 * chain, it only goes down to the LOD_MIN level (above), and then creates extra
+	 * even more filtered 'mips' at the same LOD_MIN resolution, associated with
+	 * higher roughness levels. In this way we maintain resolution to smoothly
+	 * interpolate diffuse lighting while limiting sampling computation.
+	 */
+
+	function convertLinearToRGBE(color) {
+		var maxComponent = Math.max(color.r, color.g, color.b);
+		var fExp = Math.min(Math.max(Math.ceil(Math.log2(maxComponent)), -128.0), 127.0);
+		color.multiplyScalar(Math.pow(2.0, -fExp));
+		var alpha = (fExp + 128.0) / 255.0;
+		return alpha;
+	}
+
+	var PMREMGenerator = /*#__PURE__*/function () {
+		function PMREMGenerator(renderer) {
+			this._renderer = renderer;
+			this._pingPongRenderTarget = null;
+			this._blurMaterial = _getBlurShader(MAX_SAMPLES);
+			this._equirectShader = null;
+			this._cubemapShader = null;
+
+			this._compileMaterial(this._blurMaterial);
+		}
+		/**
+		 * Generates a PMREM from a supplied Scene, which can be faster than using an
+		 * image if networking bandwidth is low. Optional sigma specifies a blur radius
+		 * in radians to be applied to the scene before PMREM generation. Optional near
+		 * and far planes ensure the scene is rendered in its entirety (the cubeCamera
+		 * is placed at the origin).
+		 */
+
+
+		var _proto = PMREMGenerator.prototype;
+
+		_proto.fromScene = function fromScene(scene, sigma, near, far) {
+			if (sigma === void 0) {
+				sigma = 0;
+			}
+
+			if (near === void 0) {
+				near = 0.1;
+			}
+
+			if (far === void 0) {
+				far = 100;
+			}
+
+			_oldTarget = this._renderer.getRenderTarget();
+
+			var cubeUVRenderTarget = this._allocateTargets();
+
+			this._sceneToCubeUV(scene, near, far, cubeUVRenderTarget);
+
+			if (sigma > 0) {
+				this._blur(cubeUVRenderTarget, 0, 0, sigma);
+			}
+
+			this._applyPMREM(cubeUVRenderTarget);
+
+			this._cleanup(cubeUVRenderTarget);
+
+			return cubeUVRenderTarget;
+		}
+		/**
+		 * Generates a PMREM from an equirectangular texture, which can be either LDR
+		 * (RGBFormat) or HDR (RGBEFormat). The ideal input image size is 1k (1024 x 512),
+		 * as this matches best with the 256 x 256 cubemap output.
+		 */
+		;
+
+		_proto.fromEquirectangular = function fromEquirectangular(equirectangular) {
+			return this._fromTexture(equirectangular);
+		}
+		/**
+		 * Generates a PMREM from an cubemap texture, which can be either LDR
+		 * (RGBFormat) or HDR (RGBEFormat). The ideal input cube size is 256 x 256,
+		 * as this matches best with the 256 x 256 cubemap output.
+		 */
+		;
+
+		_proto.fromCubemap = function fromCubemap(cubemap) {
+			return this._fromTexture(cubemap);
+		}
+		/**
+		 * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
+		 * your texture's network fetch for increased concurrency.
+		 */
+		;
+
+		_proto.compileCubemapShader = function compileCubemapShader() {
+			if (this._cubemapShader === null) {
+				this._cubemapShader = _getCubemapShader();
+
+				this._compileMaterial(this._cubemapShader);
+			}
+		}
+		/**
+		 * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
+		 * your texture's network fetch for increased concurrency.
+		 */
+		;
+
+		_proto.compileEquirectangularShader = function compileEquirectangularShader() {
+			if (this._equirectShader === null) {
+				this._equirectShader = _getEquirectShader();
+
+				this._compileMaterial(this._equirectShader);
+			}
+		}
+		/**
+		 * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
+		 * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
+		 * one of them will cause any others to also become unusable.
+		 */
+		;
+
+		_proto.dispose = function dispose() {
+			this._blurMaterial.dispose();
+
+			if (this._cubemapShader !== null) this._cubemapShader.dispose();
+			if (this._equirectShader !== null) this._equirectShader.dispose();
+
+			for (var i = 0; i < _lodPlanes.length; i++) {
+				_lodPlanes[i].dispose();
+			}
+		} // private interface
+		;
+
+		_proto._cleanup = function _cleanup(outputTarget) {
+			this._pingPongRenderTarget.dispose();
+
+			this._renderer.setRenderTarget(_oldTarget);
+
+			outputTarget.scissorTest = false;
+
+			_setViewport(outputTarget, 0, 0, outputTarget.width, outputTarget.height);
+		};
+
+		_proto._fromTexture = function _fromTexture(texture) {
+			_oldTarget = this._renderer.getRenderTarget();
+
+			var cubeUVRenderTarget = this._allocateTargets(texture);
+
+			this._textureToCubeUV(texture, cubeUVRenderTarget);
+
+			this._applyPMREM(cubeUVRenderTarget);
+
+			this._cleanup(cubeUVRenderTarget);
+
+			return cubeUVRenderTarget;
+		};
+
+		_proto._allocateTargets = function _allocateTargets(texture) {
+			// warning: null texture is valid
+			var params = {
+				magFilter: NearestFilter,
+				minFilter: NearestFilter,
+				generateMipmaps: false,
+				type: UnsignedByteType,
+				format: RGBEFormat,
+				encoding: _isLDR(texture) ? texture.encoding : RGBEEncoding,
+				depthBuffer: false
+			};
+
+			var cubeUVRenderTarget = _createRenderTarget(params);
+
+			cubeUVRenderTarget.depthBuffer = texture ? false : true;
+			this._pingPongRenderTarget = _createRenderTarget(params);
+			return cubeUVRenderTarget;
+		};
+
+		_proto._compileMaterial = function _compileMaterial(material) {
+			var tmpMesh = new Mesh(_lodPlanes[0], material);
+
+			this._renderer.compile(tmpMesh, _flatCamera);
+		};
+
+		_proto._sceneToCubeUV = function _sceneToCubeUV(scene, near, far, cubeUVRenderTarget) {
+			var fov = 90;
+			var aspect = 1;
+			var cubeCamera = new PerspectiveCamera(fov, aspect, near, far);
+			var upSign = [1, -1, 1, 1, 1, 1];
+			var forwardSign = [1, 1, 1, -1, -1, -1];
+			var renderer = this._renderer;
+			var originalAutoClear = renderer.autoClear;
+			var outputEncoding = renderer.outputEncoding;
+			var toneMapping = renderer.toneMapping;
+			renderer.getClearColor(_clearColor);
+			renderer.toneMapping = NoToneMapping;
+			renderer.outputEncoding = LinearEncoding;
+			renderer.autoClear = false;
+			var useSolidColor = false;
+			var background = scene.background;
+
+			if (background) {
+				if (background.isColor) {
+					backgroundMaterial.color.copy(background).convertSRGBToLinear();
+					scene.background = null;
+					var alpha = convertLinearToRGBE(backgroundMaterial.color);
+					backgroundMaterial.opacity = alpha;
+					useSolidColor = true;
+				}
+			} else {
+				backgroundMaterial.color.copy(_clearColor).convertSRGBToLinear();
+
+				var _alpha = convertLinearToRGBE(backgroundMaterial.color);
+
+				backgroundMaterial.opacity = _alpha;
+				useSolidColor = true;
+			}
+
+			for (var i = 0; i < 6; i++) {
+				var col = i % 3;
+
+				if (col == 0) {
+					cubeCamera.up.set(0, upSign[i], 0);
+					cubeCamera.lookAt(forwardSign[i], 0, 0);
+				} else if (col == 1) {
+					cubeCamera.up.set(0, 0, upSign[i]);
+					cubeCamera.lookAt(0, forwardSign[i], 0);
+				} else {
+					cubeCamera.up.set(0, upSign[i], 0);
+					cubeCamera.lookAt(0, 0, forwardSign[i]);
+				}
+
+				_setViewport(cubeUVRenderTarget, col * SIZE_MAX, i > 2 ? SIZE_MAX : 0, SIZE_MAX, SIZE_MAX);
+
+				renderer.setRenderTarget(cubeUVRenderTarget);
+
+				if (useSolidColor) {
+					renderer.render(backgroundBox, cubeCamera);
+				}
+
+				renderer.render(scene, cubeCamera);
+			}
+
+			renderer.toneMapping = toneMapping;
+			renderer.outputEncoding = outputEncoding;
+			renderer.autoClear = originalAutoClear;
+		};
+
+		_proto._textureToCubeUV = function _textureToCubeUV(texture, cubeUVRenderTarget) {
+			var renderer = this._renderer;
+
+			if (texture.isCubeTexture) {
+				if (this._cubemapShader == null) {
+					this._cubemapShader = _getCubemapShader();
+				}
+			} else {
+				if (this._equirectShader == null) {
+					this._equirectShader = _getEquirectShader();
+				}
+			}
+
+			var material = texture.isCubeTexture ? this._cubemapShader : this._equirectShader;
+			var mesh = new Mesh(_lodPlanes[0], material);
+			var uniforms = material.uniforms;
+			uniforms['envMap'].value = texture;
+
+			if (!texture.isCubeTexture) {
+				uniforms['texelSize'].value.set(1.0 / texture.image.width, 1.0 / texture.image.height);
+			}
+
+			uniforms['inputEncoding'].value = ENCODINGS[texture.encoding];
+			uniforms['outputEncoding'].value = ENCODINGS[cubeUVRenderTarget.texture.encoding];
+
+			_setViewport(cubeUVRenderTarget, 0, 0, 3 * SIZE_MAX, 2 * SIZE_MAX);
+
+			renderer.setRenderTarget(cubeUVRenderTarget);
+			renderer.render(mesh, _flatCamera);
+		};
+
+		_proto._applyPMREM = function _applyPMREM(cubeUVRenderTarget) {
+			var renderer = this._renderer;
+			var autoClear = renderer.autoClear;
+			renderer.autoClear = false;
+
+			for (var i = 1; i < TOTAL_LODS; i++) {
+				var sigma = Math.sqrt(_sigmas[i] * _sigmas[i] - _sigmas[i - 1] * _sigmas[i - 1]);
+				var poleAxis = _axisDirections[(i - 1) % _axisDirections.length];
+
+				this._blur(cubeUVRenderTarget, i - 1, i, sigma, poleAxis);
+			}
+
+			renderer.autoClear = autoClear;
+		}
+		/**
+		 * This is a two-pass Gaussian blur for a cubemap. Normally this is done
+		 * vertically and horizontally, but this breaks down on a cube. Here we apply
+		 * the blur latitudinally (around the poles), and then longitudinally (towards
+		 * the poles) to approximate the orthogonally-separable blur. It is least
+		 * accurate at the poles, but still does a decent job.
+		 */
+		;
+
+		_proto._blur = function _blur(cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis) {
+			var pingPongRenderTarget = this._pingPongRenderTarget;
+
+			this._halfBlur(cubeUVRenderTarget, pingPongRenderTarget, lodIn, lodOut, sigma, 'latitudinal', poleAxis);
+
+			this._halfBlur(pingPongRenderTarget, cubeUVRenderTarget, lodOut, lodOut, sigma, 'longitudinal', poleAxis);
+		};
+
+		_proto._halfBlur = function _halfBlur(targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis) {
+			var renderer = this._renderer;
+			var blurMaterial = this._blurMaterial;
+
+			if (direction !== 'latitudinal' && direction !== 'longitudinal') {
+				console.error('blur direction must be either latitudinal or longitudinal!');
+			} // Number of standard deviations at which to cut off the discrete approximation.
+
+
+			var STANDARD_DEVIATIONS = 3;
+			var blurMesh = new Mesh(_lodPlanes[lodOut], blurMaterial);
+			var blurUniforms = blurMaterial.uniforms;
+			var pixels = _sizeLods[lodIn] - 1;
+			var radiansPerPixel = isFinite(sigmaRadians) ? Math.PI / (2 * pixels) : 2 * Math.PI / (2 * MAX_SAMPLES - 1);
+			var sigmaPixels = sigmaRadians / radiansPerPixel;
+			var samples = isFinite(sigmaRadians) ? 1 + Math.floor(STANDARD_DEVIATIONS * sigmaPixels) : MAX_SAMPLES;
+
+			if (samples > MAX_SAMPLES) {
+				console.warn("sigmaRadians, " + sigmaRadians + ", is too large and will clip, as it requested " + samples + " samples when the maximum is set to " + MAX_SAMPLES);
+			}
+
+			var weights = [];
+			var sum = 0;
+
+			for (var i = 0; i < MAX_SAMPLES; ++i) {
+				var _x = i / sigmaPixels;
+
+				var weight = Math.exp(-_x * _x / 2);
+				weights.push(weight);
+
+				if (i == 0) {
+					sum += weight;
+				} else if (i < samples) {
+					sum += 2 * weight;
+				}
+			}
+
+			for (var _i = 0; _i < weights.length; _i++) {
+				weights[_i] = weights[_i] / sum;
+			}
+
+			blurUniforms['envMap'].value = targetIn.texture;
+			blurUniforms['samples'].value = samples;
+			blurUniforms['weights'].value = weights;
+			blurUniforms['latitudinal'].value = direction === 'latitudinal';
+
+			if (poleAxis) {
+				blurUniforms['poleAxis'].value = poleAxis;
+			}
+
+			blurUniforms['dTheta'].value = radiansPerPixel;
+			blurUniforms['mipInt'].value = LOD_MAX - lodIn;
+			blurUniforms['inputEncoding'].value = ENCODINGS[targetIn.texture.encoding];
+			blurUniforms['outputEncoding'].value = ENCODINGS[targetIn.texture.encoding];
+			var outputSize = _sizeLods[lodOut];
+			var x = 3 * Math.max(0, SIZE_MAX - 2 * outputSize);
+			var y = (lodOut === 0 ? 0 : 2 * SIZE_MAX) + 2 * outputSize * (lodOut > LOD_MAX - LOD_MIN ? lodOut - LOD_MAX + LOD_MIN : 0);
+
+			_setViewport(targetOut, x, y, 3 * outputSize, 2 * outputSize);
+
+			renderer.setRenderTarget(targetOut);
+			renderer.render(blurMesh, _flatCamera);
+		};
+
+		return PMREMGenerator;
+	}();
+
+	function _isLDR(texture) {
+		if (texture === undefined || texture.type !== UnsignedByteType) return false;
+		return texture.encoding === LinearEncoding || texture.encoding === sRGBEncoding || texture.encoding === GammaEncoding;
+	}
+
+	function _createPlanes() {
+		var _lodPlanes = [];
+		var _sizeLods = [];
+		var _sigmas = [];
+		var lod = LOD_MAX;
+
+		for (var i = 0; i < TOTAL_LODS; i++) {
+			var sizeLod = Math.pow(2, lod);
+
+			_sizeLods.push(sizeLod);
+
+			var sigma = 1.0 / sizeLod;
+
+			if (i > LOD_MAX - LOD_MIN) {
+				sigma = EXTRA_LOD_SIGMA[i - LOD_MAX + LOD_MIN - 1];
+			} else if (i == 0) {
+				sigma = 0;
+			}
+
+			_sigmas.push(sigma);
+
+			var texelSize = 1.0 / (sizeLod - 1);
+			var min = -texelSize / 2;
+			var max = 1 + texelSize / 2;
+			var uv1 = [min, min, max, min, max, max, min, min, max, max, min, max];
+			var cubeFaces = 6;
+			var vertices = 6;
+			var positionSize = 3;
+			var uvSize = 2;
+			var faceIndexSize = 1;
+			var position = new Float32Array(positionSize * vertices * cubeFaces);
+			var uv = new Float32Array(uvSize * vertices * cubeFaces);
+			var faceIndex = new Float32Array(faceIndexSize * vertices * cubeFaces);
+
+			for (var face = 0; face < cubeFaces; face++) {
+				var x = face % 3 * 2 / 3 - 1;
+				var y = face > 2 ? 0 : -1;
+				var coordinates = [x, y, 0, x + 2 / 3, y, 0, x + 2 / 3, y + 1, 0, x, y, 0, x + 2 / 3, y + 1, 0, x, y + 1, 0];
+				position.set(coordinates, positionSize * vertices * face);
+				uv.set(uv1, uvSize * vertices * face);
+				var fill = [face, face, face, face, face, face];
+				faceIndex.set(fill, faceIndexSize * vertices * face);
+			}
+
+			var planes = new BufferGeometry();
+			planes.setAttribute('position', new BufferAttribute(position, positionSize));
+			planes.setAttribute('uv', new BufferAttribute(uv, uvSize));
+			planes.setAttribute('faceIndex', new BufferAttribute(faceIndex, faceIndexSize));
+
+			_lodPlanes.push(planes);
+
+			if (lod > LOD_MIN) {
+				lod--;
+			}
+		}
+
+		return {
+			_lodPlanes: _lodPlanes,
+			_sizeLods: _sizeLods,
+			_sigmas: _sigmas
+		};
+	}
+
+	function _createRenderTarget(params) {
+		var cubeUVRenderTarget = new WebGLRenderTarget(3 * SIZE_MAX, 3 * SIZE_MAX, params);
+		cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
+		cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
+		cubeUVRenderTarget.scissorTest = true;
+		return cubeUVRenderTarget;
+	}
+
+	function _setViewport(target, x, y, width, height) {
+		target.viewport.set(x, y, width, height);
+		target.scissor.set(x, y, width, height);
+	}
+
+	function _getBlurShader(maxSamples) {
+		var weights = new Float32Array(maxSamples);
+		var poleAxis = new Vector3(0, 1, 0);
+		var shaderMaterial = new RawShaderMaterial({
+			name: 'SphericalGaussianBlur',
+			defines: {
+				'n': maxSamples
+			},
+			uniforms: {
+				'envMap': {
+					value: null
+				},
+				'samples': {
+					value: 1
+				},
+				'weights': {
+					value: weights
+				},
+				'latitudinal': {
+					value: false
+				},
+				'dTheta': {
+					value: 0
+				},
+				'mipInt': {
+					value: 0
+				},
+				'poleAxis': {
+					value: poleAxis
+				},
+				'inputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				},
+				'outputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				}
+			},
+			vertexShader: _getCommonVertexShader(),
+			fragmentShader:
+			/* glsl */
+			"\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform int samples;\n\t\t\tuniform float weights[ n ];\n\t\t\tuniform bool latitudinal;\n\t\t\tuniform float dTheta;\n\t\t\tuniform float mipInt;\n\t\t\tuniform vec3 poleAxis;\n\n\t\t\t" + _getEncodings() + "\n\n\t\t\t#define ENVMAP_TYPE_CUBE_UV\n\t\t\t#include <cube_uv_reflection_fragment>\n\n\t\t\tvec3 getSample( float theta, vec3 axis ) {\n\n\t\t\t\tfloat cosTheta = cos( theta );\n\t\t\t\t// Rodrigues' axis-angle rotation\n\t\t\t\tvec3 sampleDirection = vOutputDirection * cosTheta\n\t\t\t\t\t+ cross( axis, vOutputDirection ) * sin( theta )\n\t\t\t\t\t+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );\n\n\t\t\t\treturn bilinearCubeUV( envMap, sampleDirection, mipInt );\n\n\t\t\t}\n\n\t\t\tvoid main() {\n\n\t\t\t\tvec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );\n\n\t\t\t\tif ( all( equal( axis, vec3( 0.0 ) ) ) ) {\n\n\t\t\t\t\taxis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );\n\n\t\t\t\t}\n\n\t\t\t\taxis = normalize( axis );\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );\n\n\t\t\t\tfor ( int i = 1; i < n; i++ ) {\n\n\t\t\t\t\tif ( i >= samples ) {\n\n\t\t\t\t\t\tbreak;\n\n\t\t\t\t\t}\n\n\t\t\t\t\tfloat theta = dTheta * float( i );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );\n\t\t\t\t\tgl_FragColor.rgb += weights[ i ] * getSample( theta, axis );\n\n\t\t\t\t}\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t",
+			blending: NoBlending,
+			depthTest: false,
+			depthWrite: false
+		});
+		return shaderMaterial;
+	}
+
+	function _getEquirectShader() {
+		var texelSize = new Vector2(1, 1);
+		var shaderMaterial = new RawShaderMaterial({
+			name: 'EquirectangularToCubeUV',
+			uniforms: {
+				'envMap': {
+					value: null
+				},
+				'texelSize': {
+					value: texelSize
+				},
+				'inputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				},
+				'outputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				}
+			},
+			vertexShader: _getCommonVertexShader(),
+			fragmentShader:
+			/* glsl */
+			"\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform sampler2D envMap;\n\t\t\tuniform vec2 texelSize;\n\n\t\t\t" + _getEncodings() + "\n\n\t\t\t#include <common>\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\n\t\t\t\tvec3 outputDirection = normalize( vOutputDirection );\n\t\t\t\tvec2 uv = equirectUv( outputDirection );\n\n\t\t\t\tvec2 f = fract( uv / texelSize - 0.5 );\n\t\t\t\tuv -= f * texelSize;\n\t\t\t\tvec3 tl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x += texelSize.x;\n\t\t\t\tvec3 tr = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.y += texelSize.y;\n\t\t\t\tvec3 br = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\t\t\t\tuv.x -= texelSize.x;\n\t\t\t\tvec3 bl = envMapTexelToLinear( texture2D ( envMap, uv ) ).rgb;\n\n\t\t\t\tvec3 tm = mix( tl, tr, f.x );\n\t\t\t\tvec3 bm = mix( bl, br, f.x );\n\t\t\t\tgl_FragColor.rgb = mix( tm, bm, f.y );\n\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t",
+			blending: NoBlending,
+			depthTest: false,
+			depthWrite: false
+		});
+		return shaderMaterial;
+	}
+
+	function _getCubemapShader() {
+		var shaderMaterial = new RawShaderMaterial({
+			name: 'CubemapToCubeUV',
+			uniforms: {
+				'envMap': {
+					value: null
+				},
+				'inputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				},
+				'outputEncoding': {
+					value: ENCODINGS[LinearEncoding]
+				}
+			},
+			vertexShader: _getCommonVertexShader(),
+			fragmentShader:
+			/* glsl */
+			"\n\n\t\t\tprecision mediump float;\n\t\t\tprecision mediump int;\n\n\t\t\tvarying vec3 vOutputDirection;\n\n\t\t\tuniform samplerCube envMap;\n\n\t\t\t" + _getEncodings() + "\n\n\t\t\tvoid main() {\n\n\t\t\t\tgl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t\t\t\tgl_FragColor.rgb = envMapTexelToLinear( textureCube( envMap, vec3( - vOutputDirection.x, vOutputDirection.yz ) ) ).rgb;\n\t\t\t\tgl_FragColor = linearToOutputTexel( gl_FragColor );\n\n\t\t\t}\n\t\t",
+			blending: NoBlending,
+			depthTest: false,
+			depthWrite: false
+		});
+		return shaderMaterial;
+	}
+
+	function _getCommonVertexShader() {
+		return (
+			/* glsl */
+			"\n\n\t\tprecision mediump float;\n\t\tprecision mediump int;\n\n\t\tattribute vec3 position;\n\t\tattribute vec2 uv;\n\t\tattribute float faceIndex;\n\n\t\tvarying vec3 vOutputDirection;\n\n\t\t// RH coordinate system; PMREM face-indexing convention\n\t\tvec3 getDirection( vec2 uv, float face ) {\n\n\t\t\tuv = 2.0 * uv - 1.0;\n\n\t\t\tvec3 direction = vec3( uv, 1.0 );\n\n\t\t\tif ( face == 0.0 ) {\n\n\t\t\t\tdirection = direction.zyx; // ( 1, v, u ) pos x\n\n\t\t\t} else if ( face == 1.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xz *= -1.0; // ( -u, 1, -v ) pos y\n\n\t\t\t} else if ( face == 2.0 ) {\n\n\t\t\t\tdirection.x *= -1.0; // ( -u, v, 1 ) pos z\n\n\t\t\t} else if ( face == 3.0 ) {\n\n\t\t\t\tdirection = direction.zyx;\n\t\t\t\tdirection.xz *= -1.0; // ( -1, v, -u ) neg x\n\n\t\t\t} else if ( face == 4.0 ) {\n\n\t\t\t\tdirection = direction.xzy;\n\t\t\t\tdirection.xy *= -1.0; // ( -u, -1, v ) neg y\n\n\t\t\t} else if ( face == 5.0 ) {\n\n\t\t\t\tdirection.z *= -1.0; // ( u, v, -1 ) neg z\n\n\t\t\t}\n\n\t\t\treturn direction;\n\n\t\t}\n\n\t\tvoid main() {\n\n\t\t\tvOutputDirection = getDirection( uv, faceIndex );\n\t\t\tgl_Position = vec4( position, 1.0 );\n\n\t\t}\n\t"
+		);
+	}
+
+	function _getEncodings() {
+		return (
+			/* glsl */
+			"\n\n\t\tuniform int inputEncoding;\n\t\tuniform int outputEncoding;\n\n\t\t#include <encodings_pars_fragment>\n\n\t\tvec4 inputTexelToLinear( vec4 value ) {\n\n\t\t\tif ( inputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( inputEncoding == 1 ) {\n\n\t\t\t\treturn sRGBToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 2 ) {\n\n\t\t\t\treturn RGBEToLinear( value );\n\n\t\t\t} else if ( inputEncoding == 3 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 7.0 );\n\n\t\t\t} else if ( inputEncoding == 4 ) {\n\n\t\t\t\treturn RGBMToLinear( value, 16.0 );\n\n\t\t\t} else if ( inputEncoding == 5 ) {\n\n\t\t\t\treturn RGBDToLinear( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn GammaToLinear( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 linearToOutputTexel( vec4 value ) {\n\n\t\t\tif ( outputEncoding == 0 ) {\n\n\t\t\t\treturn value;\n\n\t\t\t} else if ( outputEncoding == 1 ) {\n\n\t\t\t\treturn LinearTosRGB( value );\n\n\t\t\t} else if ( outputEncoding == 2 ) {\n\n\t\t\t\treturn LinearToRGBE( value );\n\n\t\t\t} else if ( outputEncoding == 3 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 7.0 );\n\n\t\t\t} else if ( outputEncoding == 4 ) {\n\n\t\t\t\treturn LinearToRGBM( value, 16.0 );\n\n\t\t\t} else if ( outputEncoding == 5 ) {\n\n\t\t\t\treturn LinearToRGBD( value, 256.0 );\n\n\t\t\t} else {\n\n\t\t\t\treturn LinearToGamma( value, 2.2 );\n\n\t\t\t}\n\n\t\t}\n\n\t\tvec4 envMapTexelToLinear( vec4 color ) {\n\n\t\t\treturn inputTexelToLinear( color );\n\n\t\t}\n\t"
+		);
+	}
+
+	var LineStrip = 0;
+	var LinePieces = 1;
+	var NoColors = 0;
+	var FaceColors = 1;
+	var VertexColors = 2;
+	function MeshFaceMaterial(materials) {
+		console.warn('THREE.MeshFaceMaterial has been removed. Use an Array instead.');
+		return materials;
+	}
+	function MultiMaterial(materials) {
+		if (materials === void 0) {
+			materials = [];
+		}
+
+		console.warn('THREE.MultiMaterial has been removed. Use an Array instead.');
+		materials.isMultiMaterial = true;
+		materials.materials = materials;
+
+		materials.clone = function () {
+			return materials.slice();
+		};
+
+		return materials;
+	}
+	function PointCloud(geometry, material) {
+		console.warn('THREE.PointCloud has been renamed to THREE.Points.');
+		return new Points(geometry, material);
+	}
+	function Particle(material) {
+		console.warn('THREE.Particle has been renamed to THREE.Sprite.');
+		return new Sprite(material);
+	}
+	function ParticleSystem(geometry, material) {
+		console.warn('THREE.ParticleSystem has been renamed to THREE.Points.');
+		return new Points(geometry, material);
+	}
+	function PointCloudMaterial(parameters) {
+		console.warn('THREE.PointCloudMaterial has been renamed to THREE.PointsMaterial.');
+		return new PointsMaterial(parameters);
+	}
+	function ParticleBasicMaterial(parameters) {
+		console.warn('THREE.ParticleBasicMaterial has been renamed to THREE.PointsMaterial.');
+		return new PointsMaterial(parameters);
+	}
+	function ParticleSystemMaterial(parameters) {
+		console.warn('THREE.ParticleSystemMaterial has been renamed to THREE.PointsMaterial.');
+		return new PointsMaterial(parameters);
+	}
+	function Vertex(x, y, z) {
+		console.warn('THREE.Vertex has been removed. Use THREE.Vector3 instead.');
+		return new Vector3(x, y, z);
+	} //
+
+	function DynamicBufferAttribute(array, itemSize) {
+		console.warn('THREE.DynamicBufferAttribute has been removed. Use new THREE.BufferAttribute().setUsage( THREE.DynamicDrawUsage ) instead.');
+		return new BufferAttribute(array, itemSize).setUsage(DynamicDrawUsage);
+	}
+	function Int8Attribute(array, itemSize) {
+		console.warn('THREE.Int8Attribute has been removed. Use new THREE.Int8BufferAttribute() instead.');
+		return new Int8BufferAttribute(array, itemSize);
+	}
+	function Uint8Attribute(array, itemSize) {
+		console.warn('THREE.Uint8Attribute has been removed. Use new THREE.Uint8BufferAttribute() instead.');
+		return new Uint8BufferAttribute(array, itemSize);
+	}
+	function Uint8ClampedAttribute(array, itemSize) {
+		console.warn('THREE.Uint8ClampedAttribute has been removed. Use new THREE.Uint8ClampedBufferAttribute() instead.');
+		return new Uint8ClampedBufferAttribute(array, itemSize);
+	}
+	function Int16Attribute(array, itemSize) {
+		console.warn('THREE.Int16Attribute has been removed. Use new THREE.Int16BufferAttribute() instead.');
+		return new Int16BufferAttribute(array, itemSize);
+	}
+	function Uint16Attribute(array, itemSize) {
+		console.warn('THREE.Uint16Attribute has been removed. Use new THREE.Uint16BufferAttribute() instead.');
+		return new Uint16BufferAttribute(array, itemSize);
+	}
+	function Int32Attribute(array, itemSize) {
+		console.warn('THREE.Int32Attribute has been removed. Use new THREE.Int32BufferAttribute() instead.');
+		return new Int32BufferAttribute(array, itemSize);
+	}
+	function Uint32Attribute(array, itemSize) {
+		console.warn('THREE.Uint32Attribute has been removed. Use new THREE.Uint32BufferAttribute() instead.');
+		return new Uint32BufferAttribute(array, itemSize);
+	}
+	function Float32Attribute(array, itemSize) {
+		console.warn('THREE.Float32Attribute has been removed. Use new THREE.Float32BufferAttribute() instead.');
+		return new Float32BufferAttribute(array, itemSize);
+	}
+	function Float64Attribute(array, itemSize) {
+		console.warn('THREE.Float64Attribute has been removed. Use new THREE.Float64BufferAttribute() instead.');
+		return new Float64BufferAttribute(array, itemSize);
+	} //
+
+	Curve.create = function (construct, getPoint) {
+		console.log('THREE.Curve.create() has been deprecated');
+		construct.prototype = Object.create(Curve.prototype);
+		construct.prototype.constructor = construct;
+		construct.prototype.getPoint = getPoint;
+		return construct;
+	}; //
+
+
+	Path.prototype.fromPoints = function (points) {
+		console.warn('THREE.Path: .fromPoints() has been renamed to .setFromPoints().');
+		return this.setFromPoints(points);
+	}; //
+
+
+	function AxisHelper(size) {
+		console.warn('THREE.AxisHelper has been renamed to THREE.AxesHelper.');
+		return new AxesHelper(size);
+	}
+	function BoundingBoxHelper(object, color) {
+		console.warn('THREE.BoundingBoxHelper has been deprecated. Creating a THREE.BoxHelper instead.');
+		return new BoxHelper(object, color);
+	}
+	function EdgesHelper(object, hex) {
+		console.warn('THREE.EdgesHelper has been removed. Use THREE.EdgesGeometry instead.');
+		return new LineSegments(new EdgesGeometry(object.geometry), new LineBasicMaterial({
+			color: hex !== undefined ? hex : 0xffffff
+		}));
+	}
+
+	GridHelper.prototype.setColors = function () {
+		console.error('THREE.GridHelper: setColors() has been deprecated, pass them in the constructor instead.');
+	};
+
+	SkeletonHelper.prototype.update = function () {
+		console.error('THREE.SkeletonHelper: update() no longer needs to be called.');
+	};
+
+	function WireframeHelper(object, hex) {
+		console.warn('THREE.WireframeHelper has been removed. Use THREE.WireframeGeometry instead.');
+		return new LineSegments(new WireframeGeometry(object.geometry), new LineBasicMaterial({
+			color: hex !== undefined ? hex : 0xffffff
+		}));
+	} //
+
+	Loader.prototype.extractUrlBase = function (url) {
+		console.warn('THREE.Loader: .extractUrlBase() has been deprecated. Use THREE.LoaderUtils.extractUrlBase() instead.');
+		return LoaderUtils.extractUrlBase(url);
+	};
+
+	Loader.Handlers = {
+		add: function add()
+		/* regex, loader */
+		{
+			console.error('THREE.Loader: Handlers.add() has been removed. Use LoadingManager.addHandler() instead.');
+		},
+		get: function get()
+		/* file */
+		{
+			console.error('THREE.Loader: Handlers.get() has been removed. Use LoadingManager.getHandler() instead.');
+		}
+	};
+	function XHRLoader(manager) {
+		console.warn('THREE.XHRLoader has been renamed to THREE.FileLoader.');
+		return new FileLoader(manager);
+	}
+	function BinaryTextureLoader(manager) {
+		console.warn('THREE.BinaryTextureLoader has been renamed to THREE.DataTextureLoader.');
+		return new DataTextureLoader(manager);
+	} //
+
+	Box2.prototype.center = function (optionalTarget) {
+		console.warn('THREE.Box2: .center() has been renamed to .getCenter().');
+		return this.getCenter(optionalTarget);
+	};
+
+	Box2.prototype.empty = function () {
+		console.warn('THREE.Box2: .empty() has been renamed to .isEmpty().');
+		return this.isEmpty();
+	};
+
+	Box2.prototype.isIntersectionBox = function (box) {
+		console.warn('THREE.Box2: .isIntersectionBox() has been renamed to .intersectsBox().');
+		return this.intersectsBox(box);
+	};
+
+	Box2.prototype.size = function (optionalTarget) {
+		console.warn('THREE.Box2: .size() has been renamed to .getSize().');
+		return this.getSize(optionalTarget);
+	}; //
+
+
+	Box3.prototype.center = function (optionalTarget) {
+		console.warn('THREE.Box3: .center() has been renamed to .getCenter().');
+		return this.getCenter(optionalTarget);
+	};
+
+	Box3.prototype.empty = function () {
+		console.warn('THREE.Box3: .empty() has been renamed to .isEmpty().');
+		return this.isEmpty();
+	};
+
+	Box3.prototype.isIntersectionBox = function (box) {
+		console.warn('THREE.Box3: .isIntersectionBox() has been renamed to .intersectsBox().');
+		return this.intersectsBox(box);
+	};
+
+	Box3.prototype.isIntersectionSphere = function (sphere) {
+		console.warn('THREE.Box3: .isIntersectionSphere() has been renamed to .intersectsSphere().');
+		return this.intersectsSphere(sphere);
+	};
+
+	Box3.prototype.size = function (optionalTarget) {
+		console.warn('THREE.Box3: .size() has been renamed to .getSize().');
+		return this.getSize(optionalTarget);
+	}; //
+
+
+	Sphere.prototype.empty = function () {
+		console.warn('THREE.Sphere: .empty() has been renamed to .isEmpty().');
+		return this.isEmpty();
+	}; //
+
+
+	Frustum.prototype.setFromMatrix = function (m) {
+		console.warn('THREE.Frustum: .setFromMatrix() has been renamed to .setFromProjectionMatrix().');
+		return this.setFromProjectionMatrix(m);
+	}; //
+
+
+	Line3.prototype.center = function (optionalTarget) {
+		console.warn('THREE.Line3: .center() has been renamed to .getCenter().');
+		return this.getCenter(optionalTarget);
+	}; //
+
+
+	MathUtils.random16 = function () {
+		console.warn('THREE.Math: .random16() has been deprecated. Use Math.random() instead.');
+		return Math.random();
+	};
+
+	MathUtils.nearestPowerOfTwo = function (value) {
+		console.warn('THREE.Math: .nearestPowerOfTwo() has been renamed to .floorPowerOfTwo().');
+		return MathUtils.floorPowerOfTwo(value);
+	};
+
+	MathUtils.nextPowerOfTwo = function (value) {
+		console.warn('THREE.Math: .nextPowerOfTwo() has been renamed to .ceilPowerOfTwo().');
+		return MathUtils.ceilPowerOfTwo(value);
+	}; //
+
+
+	Matrix3.prototype.flattenToArrayOffset = function (array, offset) {
+		console.warn('THREE.Matrix3: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.');
+		return this.toArray(array, offset);
+	};
+
+	Matrix3.prototype.multiplyVector3 = function (vector) {
+		console.warn('THREE.Matrix3: .multiplyVector3() has been removed. Use vector.applyMatrix3( matrix ) instead.');
+		return vector.applyMatrix3(this);
+	};
+
+	Matrix3.prototype.multiplyVector3Array = function ()
+	/* a */
+	{
+		console.error('THREE.Matrix3: .multiplyVector3Array() has been removed.');
+	};
+
+	Matrix3.prototype.applyToBufferAttribute = function (attribute) {
+		console.warn('THREE.Matrix3: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix3( matrix ) instead.');
+		return attribute.applyMatrix3(this);
+	};
+
+	Matrix3.prototype.applyToVector3Array = function ()
+	/* array, offset, length */
+	{
+		console.error('THREE.Matrix3: .applyToVector3Array() has been removed.');
+	};
+
+	Matrix3.prototype.getInverse = function (matrix) {
+		console.warn('THREE.Matrix3: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.');
+		return this.copy(matrix).invert();
+	}; //
+
+
+	Matrix4.prototype.extractPosition = function (m) {
+		console.warn('THREE.Matrix4: .extractPosition() has been renamed to .copyPosition().');
+		return this.copyPosition(m);
+	};
+
+	Matrix4.prototype.flattenToArrayOffset = function (array, offset) {
+		console.warn('THREE.Matrix4: .flattenToArrayOffset() has been deprecated. Use .toArray() instead.');
+		return this.toArray(array, offset);
+	};
+
+	Matrix4.prototype.getPosition = function () {
+		console.warn('THREE.Matrix4: .getPosition() has been removed. Use Vector3.setFromMatrixPosition( matrix ) instead.');
+		return new Vector3().setFromMatrixColumn(this, 3);
+	};
+
+	Matrix4.prototype.setRotationFromQuaternion = function (q) {
+		console.warn('THREE.Matrix4: .setRotationFromQuaternion() has been renamed to .makeRotationFromQuaternion().');
+		return this.makeRotationFromQuaternion(q);
+	};
+
+	Matrix4.prototype.multiplyToArray = function () {
+		console.warn('THREE.Matrix4: .multiplyToArray() has been removed.');
+	};
+
+	Matrix4.prototype.multiplyVector3 = function (vector) {
+		console.warn('THREE.Matrix4: .multiplyVector3() has been removed. Use vector.applyMatrix4( matrix ) instead.');
+		return vector.applyMatrix4(this);
+	};
+
+	Matrix4.prototype.multiplyVector4 = function (vector) {
+		console.warn('THREE.Matrix4: .multiplyVector4() has been removed. Use vector.applyMatrix4( matrix ) instead.');
+		return vector.applyMatrix4(this);
+	};
+
+	Matrix4.prototype.multiplyVector3Array = function ()
+	/* a */
+	{
+		console.error('THREE.Matrix4: .multiplyVector3Array() has been removed.');
+	};
+
+	Matrix4.prototype.rotateAxis = function (v) {
+		console.warn('THREE.Matrix4: .rotateAxis() has been removed. Use Vector3.transformDirection( matrix ) instead.');
+		v.transformDirection(this);
+	};
+
+	Matrix4.prototype.crossVector = function (vector) {
+		console.warn('THREE.Matrix4: .crossVector() has been removed. Use vector.applyMatrix4( matrix ) instead.');
+		return vector.applyMatrix4(this);
+	};
+
+	Matrix4.prototype.translate = function () {
+		console.error('THREE.Matrix4: .translate() has been removed.');
+	};
+
+	Matrix4.prototype.rotateX = function () {
+		console.error('THREE.Matrix4: .rotateX() has been removed.');
+	};
+
+	Matrix4.prototype.rotateY = function () {
+		console.error('THREE.Matrix4: .rotateY() has been removed.');
+	};
+
+	Matrix4.prototype.rotateZ = function () {
+		console.error('THREE.Matrix4: .rotateZ() has been removed.');
+	};
+
+	Matrix4.prototype.rotateByAxis = function () {
+		console.error('THREE.Matrix4: .rotateByAxis() has been removed.');
+	};
+
+	Matrix4.prototype.applyToBufferAttribute = function (attribute) {
+		console.warn('THREE.Matrix4: .applyToBufferAttribute() has been removed. Use attribute.applyMatrix4( matrix ) instead.');
+		return attribute.applyMatrix4(this);
+	};
+
+	Matrix4.prototype.applyToVector3Array = function ()
+	/* array, offset, length */
+	{
+		console.error('THREE.Matrix4: .applyToVector3Array() has been removed.');
+	};
+
+	Matrix4.prototype.makeFrustum = function (left, right, bottom, top, near, far) {
+		console.warn('THREE.Matrix4: .makeFrustum() has been removed. Use .makePerspective( left, right, top, bottom, near, far ) instead.');
+		return this.makePerspective(left, right, top, bottom, near, far);
+	};
+
+	Matrix4.prototype.getInverse = function (matrix) {
+		console.warn('THREE.Matrix4: .getInverse() has been removed. Use matrixInv.copy( matrix ).invert(); instead.');
+		return this.copy(matrix).invert();
+	}; //
+
+
+	Plane.prototype.isIntersectionLine = function (line) {
+		console.warn('THREE.Plane: .isIntersectionLine() has been renamed to .intersectsLine().');
+		return this.intersectsLine(line);
+	}; //
+
+
+	Quaternion.prototype.multiplyVector3 = function (vector) {
+		console.warn('THREE.Quaternion: .multiplyVector3() has been removed. Use is now vector.applyQuaternion( quaternion ) instead.');
+		return vector.applyQuaternion(this);
+	};
+
+	Quaternion.prototype.inverse = function () {
+		console.warn('THREE.Quaternion: .inverse() has been renamed to invert().');
+		return this.invert();
+	}; //
+
+
+	Ray.prototype.isIntersectionBox = function (box) {
+		console.warn('THREE.Ray: .isIntersectionBox() has been renamed to .intersectsBox().');
+		return this.intersectsBox(box);
+	};
+
+	Ray.prototype.isIntersectionPlane = function (plane) {
+		console.warn('THREE.Ray: .isIntersectionPlane() has been renamed to .intersectsPlane().');
+		return this.intersectsPlane(plane);
+	};
+
+	Ray.prototype.isIntersectionSphere = function (sphere) {
+		console.warn('THREE.Ray: .isIntersectionSphere() has been renamed to .intersectsSphere().');
+		return this.intersectsSphere(sphere);
+	}; //
+
+
+	Triangle.prototype.area = function () {
+		console.warn('THREE.Triangle: .area() has been renamed to .getArea().');
+		return this.getArea();
+	};
+
+	Triangle.prototype.barycoordFromPoint = function (point, target) {
+		console.warn('THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().');
+		return this.getBarycoord(point, target);
+	};
+
+	Triangle.prototype.midpoint = function (target) {
+		console.warn('THREE.Triangle: .midpoint() has been renamed to .getMidpoint().');
+		return this.getMidpoint(target);
+	};
+
+	Triangle.prototypenormal = function (target) {
+		console.warn('THREE.Triangle: .normal() has been renamed to .getNormal().');
+		return this.getNormal(target);
+	};
+
+	Triangle.prototype.plane = function (target) {
+		console.warn('THREE.Triangle: .plane() has been renamed to .getPlane().');
+		return this.getPlane(target);
+	};
+
+	Triangle.barycoordFromPoint = function (point, a, b, c, target) {
+		console.warn('THREE.Triangle: .barycoordFromPoint() has been renamed to .getBarycoord().');
+		return Triangle.getBarycoord(point, a, b, c, target);
+	};
+
+	Triangle.normal = function (a, b, c, target) {
+		console.warn('THREE.Triangle: .normal() has been renamed to .getNormal().');
+		return Triangle.getNormal(a, b, c, target);
+	}; //
+
+
+	Shape.prototype.extractAllPoints = function (divisions) {
+		console.warn('THREE.Shape: .extractAllPoints() has been removed. Use .extractPoints() instead.');
+		return this.extractPoints(divisions);
+	};
+
+	Shape.prototype.extrude = function (options) {
+		console.warn('THREE.Shape: .extrude() has been removed. Use ExtrudeGeometry() instead.');
+		return new ExtrudeGeometry(this, options);
+	};
+
+	Shape.prototype.makeGeometry = function (options) {
+		console.warn('THREE.Shape: .makeGeometry() has been removed. Use ShapeGeometry() instead.');
+		return new ShapeGeometry(this, options);
+	}; //
+
+
+	Vector2.prototype.fromAttribute = function (attribute, index, offset) {
+		console.warn('THREE.Vector2: .fromAttribute() has been renamed to .fromBufferAttribute().');
+		return this.fromBufferAttribute(attribute, index, offset);
+	};
+
+	Vector2.prototype.distanceToManhattan = function (v) {
+		console.warn('THREE.Vector2: .distanceToManhattan() has been renamed to .manhattanDistanceTo().');
+		return this.manhattanDistanceTo(v);
+	};
+
+	Vector2.prototype.lengthManhattan = function () {
+		console.warn('THREE.Vector2: .lengthManhattan() has been renamed to .manhattanLength().');
+		return this.manhattanLength();
+	}; //
+
+
+	Vector3.prototype.setEulerFromRotationMatrix = function () {
+		console.error('THREE.Vector3: .setEulerFromRotationMatrix() has been removed. Use Euler.setFromRotationMatrix() instead.');
+	};
+
+	Vector3.prototype.setEulerFromQuaternion = function () {
+		console.error('THREE.Vector3: .setEulerFromQuaternion() has been removed. Use Euler.setFromQuaternion() instead.');
+	};
+
+	Vector3.prototype.getPositionFromMatrix = function (m) {
+		console.warn('THREE.Vector3: .getPositionFromMatrix() has been renamed to .setFromMatrixPosition().');
+		return this.setFromMatrixPosition(m);
+	};
+
+	Vector3.prototype.getScaleFromMatrix = function (m) {
+		console.warn('THREE.Vector3: .getScaleFromMatrix() has been renamed to .setFromMatrixScale().');
+		return this.setFromMatrixScale(m);
+	};
+
+	Vector3.prototype.getColumnFromMatrix = function (index, matrix) {
+		console.warn('THREE.Vector3: .getColumnFromMatrix() has been renamed to .setFromMatrixColumn().');
+		return this.setFromMatrixColumn(matrix, index);
+	};
+
+	Vector3.prototype.applyProjection = function (m) {
+		console.warn('THREE.Vector3: .applyProjection() has been removed. Use .applyMatrix4( m ) instead.');
+		return this.applyMatrix4(m);
+	};
+
+	Vector3.prototype.fromAttribute = function (attribute, index, offset) {
+		console.warn('THREE.Vector3: .fromAttribute() has been renamed to .fromBufferAttribute().');
+		return this.fromBufferAttribute(attribute, index, offset);
+	};
+
+	Vector3.prototype.distanceToManhattan = function (v) {
+		console.warn('THREE.Vector3: .distanceToManhattan() has been renamed to .manhattanDistanceTo().');
+		return this.manhattanDistanceTo(v);
+	};
+
+	Vector3.prototype.lengthManhattan = function () {
+		console.warn('THREE.Vector3: .lengthManhattan() has been renamed to .manhattanLength().');
+		return this.manhattanLength();
+	}; //
+
+
+	Vector4.prototype.fromAttribute = function (attribute, index, offset) {
+		console.warn('THREE.Vector4: .fromAttribute() has been renamed to .fromBufferAttribute().');
+		return this.fromBufferAttribute(attribute, index, offset);
+	};
+
+	Vector4.prototype.lengthManhattan = function () {
+		console.warn('THREE.Vector4: .lengthManhattan() has been renamed to .manhattanLength().');
+		return this.manhattanLength();
+	}; //
+
+
+	Object3D.prototype.getChildByName = function (name) {
+		console.warn('THREE.Object3D: .getChildByName() has been renamed to .getObjectByName().');
+		return this.getObjectByName(name);
+	};
+
+	Object3D.prototype.renderDepth = function () {
+		console.warn('THREE.Object3D: .renderDepth has been removed. Use .renderOrder, instead.');
+	};
+
+	Object3D.prototype.translate = function (distance, axis) {
+		console.warn('THREE.Object3D: .translate() has been removed. Use .translateOnAxis( axis, distance ) instead.');
+		return this.translateOnAxis(axis, distance);
+	};
+
+	Object3D.prototype.getWorldRotation = function () {
+		console.error('THREE.Object3D: .getWorldRotation() has been removed. Use THREE.Object3D.getWorldQuaternion( target ) instead.');
+	};
+
+	Object3D.prototype.applyMatrix = function (matrix) {
+		console.warn('THREE.Object3D: .applyMatrix() has been renamed to .applyMatrix4().');
+		return this.applyMatrix4(matrix);
+	};
+
+	Object.defineProperties(Object3D.prototype, {
+		eulerOrder: {
+			get: function get() {
+				console.warn('THREE.Object3D: .eulerOrder is now .rotation.order.');
+				return this.rotation.order;
+			},
+			set: function set(value) {
+				console.warn('THREE.Object3D: .eulerOrder is now .rotation.order.');
+				this.rotation.order = value;
+			}
+		},
+		useQuaternion: {
+			get: function get() {
+				console.warn('THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.');
+			},
+			set: function set() {
+				console.warn('THREE.Object3D: .useQuaternion has been removed. The library now uses quaternions by default.');
+			}
+		}
+	});
+
+	Mesh.prototype.setDrawMode = function () {
+		console.error('THREE.Mesh: .setDrawMode() has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.');
+	};
+
+	Object.defineProperties(Mesh.prototype, {
+		drawMode: {
+			get: function get() {
+				console.error('THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode.');
+				return TrianglesDrawMode;
+			},
+			set: function set() {
+				console.error('THREE.Mesh: .drawMode has been removed. The renderer now always assumes THREE.TrianglesDrawMode. Transform your geometry via BufferGeometryUtils.toTrianglesDrawMode() if necessary.');
+			}
+		}
+	});
+	Object.defineProperties(LOD.prototype, {
+		objects: {
+			get: function get() {
+				console.warn('THREE.LOD: .objects has been renamed to .levels.');
+				return this.levels;
+			}
+		}
+	});
+	Object.defineProperty(Skeleton.prototype, 'useVertexTexture', {
+		get: function get() {
+			console.warn('THREE.Skeleton: useVertexTexture has been removed.');
+		},
+		set: function set() {
+			console.warn('THREE.Skeleton: useVertexTexture has been removed.');
+		}
+	});
+
+	SkinnedMesh.prototype.initBones = function () {
+		console.error('THREE.SkinnedMesh: initBones() has been removed.');
+	};
+
+	Object.defineProperty(Curve.prototype, '__arcLengthDivisions', {
+		get: function get() {
+			console.warn('THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.');
+			return this.arcLengthDivisions;
+		},
+		set: function set(value) {
+			console.warn('THREE.Curve: .__arcLengthDivisions is now .arcLengthDivisions.');
+			this.arcLengthDivisions = value;
+		}
+	}); //
+
+	PerspectiveCamera.prototype.setLens = function (focalLength, filmGauge) {
+		console.warn('THREE.PerspectiveCamera.setLens is deprecated. ' + 'Use .setFocalLength and .filmGauge for a photographic setup.');
+		if (filmGauge !== undefined) this.filmGauge = filmGauge;
+		this.setFocalLength(focalLength);
+	}; //
+
+
+	Object.defineProperties(Light.prototype, {
+		onlyShadow: {
+			set: function set() {
+				console.warn('THREE.Light: .onlyShadow has been removed.');
+			}
+		},
+		shadowCameraFov: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowCameraFov is now .shadow.camera.fov.');
+				this.shadow.camera.fov = value;
+			}
+		},
+		shadowCameraLeft: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowCameraLeft is now .shadow.camera.left.');
+				this.shadow.camera.left = value;
+			}
+		},
+		shadowCameraRight: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowCameraRight is now .shadow.camera.right.');
+				this.shadow.camera.right = value;
+			}
+		},
+		shadowCameraTop: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowCameraTop is now .shadow.camera.top.');
+				this.shadow.camera.top = value;
+			}
+		},
+		shadowCameraBottom: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowCameraBottom is now .shadow.camera.bottom.');
+				this.shadow.camera.bottom = value;
+			}
+		},
+		shadowCameraNear: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowCameraNear is now .shadow.camera.near.');
+				this.shadow.camera.near = value;
+			}
+		},
+		shadowCameraFar: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowCameraFar is now .shadow.camera.far.');
+				this.shadow.camera.far = value;
+			}
+		},
+		shadowCameraVisible: {
+			set: function set() {
+				console.warn('THREE.Light: .shadowCameraVisible has been removed. Use new THREE.CameraHelper( light.shadow.camera ) instead.');
+			}
+		},
+		shadowBias: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowBias is now .shadow.bias.');
+				this.shadow.bias = value;
+			}
+		},
+		shadowDarkness: {
+			set: function set() {
+				console.warn('THREE.Light: .shadowDarkness has been removed.');
+			}
+		},
+		shadowMapWidth: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowMapWidth is now .shadow.mapSize.width.');
+				this.shadow.mapSize.width = value;
+			}
+		},
+		shadowMapHeight: {
+			set: function set(value) {
+				console.warn('THREE.Light: .shadowMapHeight is now .shadow.mapSize.height.');
+				this.shadow.mapSize.height = value;
+			}
+		}
+	}); //
+
+	Object.defineProperties(BufferAttribute.prototype, {
+		length: {
+			get: function get() {
+				console.warn('THREE.BufferAttribute: .length has been deprecated. Use .count instead.');
+				return this.array.length;
+			}
+		},
+		dynamic: {
+			get: function get() {
+				console.warn('THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.');
+				return this.usage === DynamicDrawUsage;
+			},
+			set: function set()
+			/* value */
+			{
+				console.warn('THREE.BufferAttribute: .dynamic has been deprecated. Use .usage instead.');
+				this.setUsage(DynamicDrawUsage);
+			}
+		}
+	});
+
+	BufferAttribute.prototype.setDynamic = function (value) {
+		console.warn('THREE.BufferAttribute: .setDynamic() has been deprecated. Use .setUsage() instead.');
+		this.setUsage(value === true ? DynamicDrawUsage : StaticDrawUsage);
+		return this;
+	};
+
+	BufferAttribute.prototype.copyIndicesArray = function ()
+	/* indices */
+	{
+		console.error('THREE.BufferAttribute: .copyIndicesArray() has been removed.');
+	}, BufferAttribute.prototype.setArray = function ()
+	/* array */
+	{
+		console.error('THREE.BufferAttribute: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers');
+	}; //
+
+	BufferGeometry.prototype.addIndex = function (index) {
+		console.warn('THREE.BufferGeometry: .addIndex() has been renamed to .setIndex().');
+		this.setIndex(index);
+	};
+
+	BufferGeometry.prototype.addAttribute = function (name, attribute) {
+		console.warn('THREE.BufferGeometry: .addAttribute() has been renamed to .setAttribute().');
+
+		if (!(attribute && attribute.isBufferAttribute) && !(attribute && attribute.isInterleavedBufferAttribute)) {
+			console.warn('THREE.BufferGeometry: .addAttribute() now expects ( name, attribute ).');
+			return this.setAttribute(name, new BufferAttribute(arguments[1], arguments[2]));
+		}
+
+		if (name === 'index') {
+			console.warn('THREE.BufferGeometry.addAttribute: Use .setIndex() for index attribute.');
+			this.setIndex(attribute);
+			return this;
+		}
+
+		return this.setAttribute(name, attribute);
+	};
+
+	BufferGeometry.prototype.addDrawCall = function (start, count, indexOffset) {
+		if (indexOffset !== undefined) {
+			console.warn('THREE.BufferGeometry: .addDrawCall() no longer supports indexOffset.');
+		}
+
+		console.warn('THREE.BufferGeometry: .addDrawCall() is now .addGroup().');
+		this.addGroup(start, count);
+	};
+
+	BufferGeometry.prototype.clearDrawCalls = function () {
+		console.warn('THREE.BufferGeometry: .clearDrawCalls() is now .clearGroups().');
+		this.clearGroups();
+	};
+
+	BufferGeometry.prototype.computeOffsets = function () {
+		console.warn('THREE.BufferGeometry: .computeOffsets() has been removed.');
+	};
+
+	BufferGeometry.prototype.removeAttribute = function (name) {
+		console.warn('THREE.BufferGeometry: .removeAttribute() has been renamed to .deleteAttribute().');
+		return this.deleteAttribute(name);
+	};
+
+	BufferGeometry.prototype.applyMatrix = function (matrix) {
+		console.warn('THREE.BufferGeometry: .applyMatrix() has been renamed to .applyMatrix4().');
+		return this.applyMatrix4(matrix);
+	};
+
+	Object.defineProperties(BufferGeometry.prototype, {
+		drawcalls: {
+			get: function get() {
+				console.error('THREE.BufferGeometry: .drawcalls has been renamed to .groups.');
+				return this.groups;
+			}
+		},
+		offsets: {
+			get: function get() {
+				console.warn('THREE.BufferGeometry: .offsets has been renamed to .groups.');
+				return this.groups;
+			}
+		}
+	});
+	Object.defineProperties(InstancedBufferGeometry.prototype, {
+		maxInstancedCount: {
+			get: function get() {
+				console.warn('THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.');
+				return this.instanceCount;
+			},
+			set: function set(value) {
+				console.warn('THREE.InstancedBufferGeometry: .maxInstancedCount has been renamed to .instanceCount.');
+				this.instanceCount = value;
+			}
+		}
+	});
+	Object.defineProperties(Raycaster.prototype, {
+		linePrecision: {
+			get: function get() {
+				console.warn('THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.');
+				return this.params.Line.threshold;
+			},
+			set: function set(value) {
+				console.warn('THREE.Raycaster: .linePrecision has been deprecated. Use .params.Line.threshold instead.');
+				this.params.Line.threshold = value;
+			}
+		}
+	});
+	Object.defineProperties(InterleavedBuffer.prototype, {
+		dynamic: {
+			get: function get() {
+				console.warn('THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.');
+				return this.usage === DynamicDrawUsage;
+			},
+			set: function set(value) {
+				console.warn('THREE.InterleavedBuffer: .length has been deprecated. Use .usage instead.');
+				this.setUsage(value);
+			}
+		}
+	});
+
+	InterleavedBuffer.prototype.setDynamic = function (value) {
+		console.warn('THREE.InterleavedBuffer: .setDynamic() has been deprecated. Use .setUsage() instead.');
+		this.setUsage(value === true ? DynamicDrawUsage : StaticDrawUsage);
+		return this;
+	};
+
+	InterleavedBuffer.prototype.setArray = function ()
+	/* array */
+	{
+		console.error('THREE.InterleavedBuffer: .setArray has been removed. Use BufferGeometry .setAttribute to replace/resize attribute buffers');
+	}; //
+
+
+	ExtrudeGeometry.prototype.getArrays = function () {
+		console.error('THREE.ExtrudeGeometry: .getArrays() has been removed.');
+	};
+
+	ExtrudeGeometry.prototype.addShapeList = function () {
+		console.error('THREE.ExtrudeGeometry: .addShapeList() has been removed.');
+	};
+
+	ExtrudeGeometry.prototype.addShape = function () {
+		console.error('THREE.ExtrudeGeometry: .addShape() has been removed.');
+	}; //
+
+
+	Scene.prototype.dispose = function () {
+		console.error('THREE.Scene: .dispose() has been removed.');
+	}; //
+
+
+	Object.defineProperties(Uniform.prototype, {
+		dynamic: {
+			set: function set() {
+				console.warn('THREE.Uniform: .dynamic has been removed. Use object.onBeforeRender() instead.');
+			}
+		},
+		onUpdate: {
+			value: function value() {
+				console.warn('THREE.Uniform: .onUpdate() has been removed. Use object.onBeforeRender() instead.');
+				return this;
+			}
+		}
+	}); //
+
+	Object.defineProperties(Material.prototype, {
+		wrapAround: {
+			get: function get() {
+				console.warn('THREE.Material: .wrapAround has been removed.');
+			},
+			set: function set() {
+				console.warn('THREE.Material: .wrapAround has been removed.');
+			}
+		},
+		overdraw: {
+			get: function get() {
+				console.warn('THREE.Material: .overdraw has been removed.');
+			},
+			set: function set() {
+				console.warn('THREE.Material: .overdraw has been removed.');
+			}
+		},
+		wrapRGB: {
+			get: function get() {
+				console.warn('THREE.Material: .wrapRGB has been removed.');
+				return new Color();
+			}
+		},
+		shading: {
+			get: function get() {
+				console.error('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
+			},
+			set: function set(value) {
+				console.warn('THREE.' + this.type + ': .shading has been removed. Use the boolean .flatShading instead.');
+				this.flatShading = value === FlatShading;
+			}
+		},
+		stencilMask: {
+			get: function get() {
+				console.warn('THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.');
+				return this.stencilFuncMask;
+			},
+			set: function set(value) {
+				console.warn('THREE.' + this.type + ': .stencilMask has been removed. Use .stencilFuncMask instead.');
+				this.stencilFuncMask = value;
+			}
+		}
+	});
+	Object.defineProperties(MeshPhongMaterial.prototype, {
+		metal: {
+			get: function get() {
+				console.warn('THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead.');
+				return false;
+			},
+			set: function set() {
+				console.warn('THREE.MeshPhongMaterial: .metal has been removed. Use THREE.MeshStandardMaterial instead');
+			}
+		}
+	});
+	Object.defineProperties(MeshPhysicalMaterial.prototype, {
+		transparency: {
+			get: function get() {
+				console.warn('THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.');
+				return this.transmission;
+			},
+			set: function set(value) {
+				console.warn('THREE.MeshPhysicalMaterial: .transparency has been renamed to .transmission.');
+				this.transmission = value;
+			}
+		}
+	});
+	Object.defineProperties(ShaderMaterial.prototype, {
+		derivatives: {
+			get: function get() {
+				console.warn('THREE.ShaderMaterial: .derivatives has been moved to .extensions.derivatives.');
+				return this.extensions.derivatives;
+			},
+			set: function set(value) {
+				console.warn('THREE. ShaderMaterial: .derivatives has been moved to .extensions.derivatives.');
+				this.extensions.derivatives = value;
+			}
+		}
+	}); //
+
+	WebGLRenderer.prototype.clearTarget = function (renderTarget, color, depth, stencil) {
+		console.warn('THREE.WebGLRenderer: .clearTarget() has been deprecated. Use .setRenderTarget() and .clear() instead.');
+		this.setRenderTarget(renderTarget);
+		this.clear(color, depth, stencil);
+	};
+
+	WebGLRenderer.prototype.animate = function (callback) {
+		console.warn('THREE.WebGLRenderer: .animate() is now .setAnimationLoop().');
+		this.setAnimationLoop(callback);
+	};
+
+	WebGLRenderer.prototype.getCurrentRenderTarget = function () {
+		console.warn('THREE.WebGLRenderer: .getCurrentRenderTarget() is now .getRenderTarget().');
+		return this.getRenderTarget();
+	};
+
+	WebGLRenderer.prototype.getMaxAnisotropy = function () {
+		console.warn('THREE.WebGLRenderer: .getMaxAnisotropy() is now .capabilities.getMaxAnisotropy().');
+		return this.capabilities.getMaxAnisotropy();
+	};
+
+	WebGLRenderer.prototype.getPrecision = function () {
+		console.warn('THREE.WebGLRenderer: .getPrecision() is now .capabilities.precision.');
+		return this.capabilities.precision;
+	};
+
+	WebGLRenderer.prototype.resetGLState = function () {
+		console.warn('THREE.WebGLRenderer: .resetGLState() is now .state.reset().');
+		return this.state.reset();
+	};
+
+	WebGLRenderer.prototype.supportsFloatTextures = function () {
+		console.warn('THREE.WebGLRenderer: .supportsFloatTextures() is now .extensions.get( \'OES_texture_float\' ).');
+		return this.extensions.get('OES_texture_float');
+	};
+
+	WebGLRenderer.prototype.supportsHalfFloatTextures = function () {
+		console.warn('THREE.WebGLRenderer: .supportsHalfFloatTextures() is now .extensions.get( \'OES_texture_half_float\' ).');
+		return this.extensions.get('OES_texture_half_float');
+	};
+
+	WebGLRenderer.prototype.supportsStandardDerivatives = function () {
+		console.warn('THREE.WebGLRenderer: .supportsStandardDerivatives() is now .extensions.get( \'OES_standard_derivatives\' ).');
+		return this.extensions.get('OES_standard_derivatives');
+	};
+
+	WebGLRenderer.prototype.supportsCompressedTextureS3TC = function () {
+		console.warn('THREE.WebGLRenderer: .supportsCompressedTextureS3TC() is now .extensions.get( \'WEBGL_compressed_texture_s3tc\' ).');
+		return this.extensions.get('WEBGL_compressed_texture_s3tc');
+	};
+
+	WebGLRenderer.prototype.supportsCompressedTexturePVRTC = function () {
+		console.warn('THREE.WebGLRenderer: .supportsCompressedTexturePVRTC() is now .extensions.get( \'WEBGL_compressed_texture_pvrtc\' ).');
+		return this.extensions.get('WEBGL_compressed_texture_pvrtc');
+	};
+
+	WebGLRenderer.prototype.supportsBlendMinMax = function () {
+		console.warn('THREE.WebGLRenderer: .supportsBlendMinMax() is now .extensions.get( \'EXT_blend_minmax\' ).');
+		return this.extensions.get('EXT_blend_minmax');
+	};
+
+	WebGLRenderer.prototype.supportsVertexTextures = function () {
+		console.warn('THREE.WebGLRenderer: .supportsVertexTextures() is now .capabilities.vertexTextures.');
+		return this.capabilities.vertexTextures;
+	};
+
+	WebGLRenderer.prototype.supportsInstancedArrays = function () {
+		console.warn('THREE.WebGLRenderer: .supportsInstancedArrays() is now .extensions.get( \'ANGLE_instanced_arrays\' ).');
+		return this.extensions.get('ANGLE_instanced_arrays');
+	};
+
+	WebGLRenderer.prototype.enableScissorTest = function (boolean) {
+		console.warn('THREE.WebGLRenderer: .enableScissorTest() is now .setScissorTest().');
+		this.setScissorTest(boolean);
+	};
+
+	WebGLRenderer.prototype.initMaterial = function () {
+		console.warn('THREE.WebGLRenderer: .initMaterial() has been removed.');
+	};
+
+	WebGLRenderer.prototype.addPrePlugin = function () {
+		console.warn('THREE.WebGLRenderer: .addPrePlugin() has been removed.');
+	};
+
+	WebGLRenderer.prototype.addPostPlugin = function () {
+		console.warn('THREE.WebGLRenderer: .addPostPlugin() has been removed.');
+	};
+
+	WebGLRenderer.prototype.updateShadowMap = function () {
+		console.warn('THREE.WebGLRenderer: .updateShadowMap() has been removed.');
+	};
+
+	WebGLRenderer.prototype.setFaceCulling = function () {
+		console.warn('THREE.WebGLRenderer: .setFaceCulling() has been removed.');
+	};
+
+	WebGLRenderer.prototype.allocTextureUnit = function () {
+		console.warn('THREE.WebGLRenderer: .allocTextureUnit() has been removed.');
+	};
+
+	WebGLRenderer.prototype.setTexture = function () {
+		console.warn('THREE.WebGLRenderer: .setTexture() has been removed.');
+	};
+
+	WebGLRenderer.prototype.setTexture2D = function () {
+		console.warn('THREE.WebGLRenderer: .setTexture2D() has been removed.');
+	};
+
+	WebGLRenderer.prototype.setTextureCube = function () {
+		console.warn('THREE.WebGLRenderer: .setTextureCube() has been removed.');
+	};
+
+	WebGLRenderer.prototype.getActiveMipMapLevel = function () {
+		console.warn('THREE.WebGLRenderer: .getActiveMipMapLevel() is now .getActiveMipmapLevel().');
+		return this.getActiveMipmapLevel();
+	};
+
+	Object.defineProperties(WebGLRenderer.prototype, {
+		shadowMapEnabled: {
+			get: function get() {
+				return this.shadowMap.enabled;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderer: .shadowMapEnabled is now .shadowMap.enabled.');
+				this.shadowMap.enabled = value;
+			}
+		},
+		shadowMapType: {
+			get: function get() {
+				return this.shadowMap.type;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderer: .shadowMapType is now .shadowMap.type.');
+				this.shadowMap.type = value;
+			}
+		},
+		shadowMapCullFace: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function set()
+			/* value */
+			{
+				console.warn('THREE.WebGLRenderer: .shadowMapCullFace has been removed. Set Material.shadowSide instead.');
+			}
+		},
+		context: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .context has been removed. Use .getContext() instead.');
+				return this.getContext();
+			}
+		},
+		vr: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .vr has been renamed to .xr');
+				return this.xr;
+			}
+		},
+		gammaInput: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.');
+				return false;
+			},
+			set: function set() {
+				console.warn('THREE.WebGLRenderer: .gammaInput has been removed. Set the encoding for textures via Texture.encoding instead.');
+			}
+		},
+		gammaOutput: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.');
+				return false;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderer: .gammaOutput has been removed. Set WebGLRenderer.outputEncoding instead.');
+				this.outputEncoding = value === true ? sRGBEncoding : LinearEncoding;
+			}
+		},
+		toneMappingWhitePoint: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.');
+				return 1.0;
+			},
+			set: function set() {
+				console.warn('THREE.WebGLRenderer: .toneMappingWhitePoint has been removed.');
+			}
+		}
+	});
+	Object.defineProperties(WebGLShadowMap.prototype, {
+		cullFace: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function set()
+			/* cullFace */
+			{
+				console.warn('THREE.WebGLRenderer: .shadowMap.cullFace has been removed. Set Material.shadowSide instead.');
+			}
+		},
+		renderReverseSided: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function set() {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderReverseSided has been removed. Set Material.shadowSide instead.');
+			}
+		},
+		renderSingleSided: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.');
+				return undefined;
+			},
+			set: function set() {
+				console.warn('THREE.WebGLRenderer: .shadowMap.renderSingleSided has been removed. Set Material.shadowSide instead.');
+			}
+		}
+	});
+	function WebGLRenderTargetCube(width, height, options) {
+		console.warn('THREE.WebGLRenderTargetCube( width, height, options ) is now WebGLCubeRenderTarget( size, options ).');
+		return new WebGLCubeRenderTarget(width, options);
+	} //
+
+	Object.defineProperties(WebGLRenderTarget.prototype, {
+		wrapS: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.');
+				return this.texture.wrapS;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .wrapS is now .texture.wrapS.');
+				this.texture.wrapS = value;
+			}
+		},
+		wrapT: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.');
+				return this.texture.wrapT;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .wrapT is now .texture.wrapT.');
+				this.texture.wrapT = value;
+			}
+		},
+		magFilter: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.');
+				return this.texture.magFilter;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .magFilter is now .texture.magFilter.');
+				this.texture.magFilter = value;
+			}
+		},
+		minFilter: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.');
+				return this.texture.minFilter;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .minFilter is now .texture.minFilter.');
+				this.texture.minFilter = value;
+			}
+		},
+		anisotropy: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.');
+				return this.texture.anisotropy;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .anisotropy is now .texture.anisotropy.');
+				this.texture.anisotropy = value;
+			}
+		},
+		offset: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .offset is now .texture.offset.');
+				return this.texture.offset;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .offset is now .texture.offset.');
+				this.texture.offset = value;
+			}
+		},
+		repeat: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .repeat is now .texture.repeat.');
+				return this.texture.repeat;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .repeat is now .texture.repeat.');
+				this.texture.repeat = value;
+			}
+		},
+		format: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .format is now .texture.format.');
+				return this.texture.format;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .format is now .texture.format.');
+				this.texture.format = value;
+			}
+		},
+		type: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .type is now .texture.type.');
+				return this.texture.type;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .type is now .texture.type.');
+				this.texture.type = value;
+			}
+		},
+		generateMipmaps: {
+			get: function get() {
+				console.warn('THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.');
+				return this.texture.generateMipmaps;
+			},
+			set: function set(value) {
+				console.warn('THREE.WebGLRenderTarget: .generateMipmaps is now .texture.generateMipmaps.');
+				this.texture.generateMipmaps = value;
+			}
+		}
+	}); //
+
+	Object.defineProperties(Audio.prototype, {
+		load: {
+			value: function value(file) {
+				console.warn('THREE.Audio: .load has been deprecated. Use THREE.AudioLoader instead.');
+				var scope = this;
+				var audioLoader = new AudioLoader();
+				audioLoader.load(file, function (buffer) {
+					scope.setBuffer(buffer);
+				});
+				return this;
+			}
+		},
+		startTime: {
+			set: function set() {
+				console.warn('THREE.Audio: .startTime is now .play( delay ).');
+			}
+		}
+	});
+
+	AudioAnalyser.prototype.getData = function () {
+		console.warn('THREE.AudioAnalyser: .getData() is now .getFrequencyData().');
+		return this.getFrequencyData();
+	}; //
+
+
+	CubeCamera.prototype.updateCubeMap = function (renderer, scene) {
+		console.warn('THREE.CubeCamera: .updateCubeMap() is now .update().');
+		return this.update(renderer, scene);
+	};
+
+	CubeCamera.prototype.clear = function (renderer, color, depth, stencil) {
+		console.warn('THREE.CubeCamera: .clear() is now .renderTarget.clear().');
+		return this.renderTarget.clear(renderer, color, depth, stencil);
+	};
+
+	ImageUtils.crossOrigin = undefined;
+
+	ImageUtils.loadTexture = function (url, mapping, onLoad, onError) {
+		console.warn('THREE.ImageUtils.loadTexture has been deprecated. Use THREE.TextureLoader() instead.');
+		var loader = new TextureLoader();
+		loader.setCrossOrigin(this.crossOrigin);
+		var texture = loader.load(url, onLoad, undefined, onError);
+		if (mapping) texture.mapping = mapping;
+		return texture;
+	};
+
+	ImageUtils.loadTextureCube = function (urls, mapping, onLoad, onError) {
+		console.warn('THREE.ImageUtils.loadTextureCube has been deprecated. Use THREE.CubeTextureLoader() instead.');
+		var loader = new CubeTextureLoader();
+		loader.setCrossOrigin(this.crossOrigin);
+		var texture = loader.load(urls, onLoad, undefined, onError);
+		if (mapping) texture.mapping = mapping;
+		return texture;
+	};
+
+	ImageUtils.loadCompressedTexture = function () {
+		console.error('THREE.ImageUtils.loadCompressedTexture has been removed. Use THREE.DDSLoader instead.');
+	};
+
+	ImageUtils.loadCompressedTextureCube = function () {
+		console.error('THREE.ImageUtils.loadCompressedTextureCube has been removed. Use THREE.DDSLoader instead.');
+	}; //
+
+
+	function CanvasRenderer() {
+		console.error('THREE.CanvasRenderer has been removed');
+	} //
+
+	function JSONLoader() {
+		console.error('THREE.JSONLoader has been removed.');
+	} //
+
+	var SceneUtils = {
+		createMultiMaterialObject: function createMultiMaterialObject()
+		/* geometry, materials */
+		{
+			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
+		},
+		detach: function detach()
+		/* child, parent, scene */
+		{
+			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
+		},
+		attach: function attach()
+		/* child, scene, parent */
+		{
+			console.error('THREE.SceneUtils has been moved to /examples/jsm/utils/SceneUtils.js');
+		}
+	}; //
+
+	function LensFlare() {
+		console.error('THREE.LensFlare has been moved to /examples/jsm/objects/Lensflare.js');
+	}
+
+	if (typeof __THREE_DEVTOOLS__ !== 'undefined') {
+		/* eslint-disable no-undef */
+		__THREE_DEVTOOLS__.dispatchEvent(new CustomEvent('register', {
+			detail: {
+				revision: REVISION
+			}
+		}));
+		/* eslint-enable no-undef */
+
+	}
+
+	if (typeof window !== 'undefined') {
+		if (window.__THREE__) {
+			console.warn('WARNING: Multiple instances of Three.js being imported.');
+		} else {
+			window.__THREE__ = REVISION;
+		}
+	}
+
+	exports.ACESFilmicToneMapping = ACESFilmicToneMapping;
+	exports.AddEquation = AddEquation;
+	exports.AddOperation = AddOperation;
+	exports.AdditiveAnimationBlendMode = AdditiveAnimationBlendMode;
+	exports.AdditiveBlending = AdditiveBlending;
+	exports.AlphaFormat = AlphaFormat;
+	exports.AlwaysDepth = AlwaysDepth;
+	exports.AlwaysStencilFunc = AlwaysStencilFunc;
+	exports.AmbientLight = AmbientLight;
+	exports.AmbientLightProbe = AmbientLightProbe;
+	exports.AnimationClip = AnimationClip;
+	exports.AnimationLoader = AnimationLoader;
+	exports.AnimationMixer = AnimationMixer;
+	exports.AnimationObjectGroup = AnimationObjectGroup;
+	exports.AnimationUtils = AnimationUtils;
+	exports.ArcCurve = ArcCurve;
+	exports.ArrayCamera = ArrayCamera;
+	exports.ArrowHelper = ArrowHelper;
+	exports.Audio = Audio;
+	exports.AudioAnalyser = AudioAnalyser;
+	exports.AudioContext = AudioContext;
+	exports.AudioListener = AudioListener;
+	exports.AudioLoader = AudioLoader;
+	exports.AxesHelper = AxesHelper;
+	exports.AxisHelper = AxisHelper;
+	exports.BackSide = BackSide;
+	exports.BasicDepthPacking = BasicDepthPacking;
+	exports.BasicShadowMap = BasicShadowMap;
+	exports.BinaryTextureLoader = BinaryTextureLoader;
+	exports.Bone = Bone;
+	exports.BooleanKeyframeTrack = BooleanKeyframeTrack;
+	exports.BoundingBoxHelper = BoundingBoxHelper;
+	exports.Box2 = Box2;
+	exports.Box3 = Box3;
+	exports.Box3Helper = Box3Helper;
+	exports.BoxBufferGeometry = BoxGeometry;
+	exports.BoxGeometry = BoxGeometry;
+	exports.BoxHelper = BoxHelper;
+	exports.BufferAttribute = BufferAttribute;
+	exports.BufferGeometry = BufferGeometry;
+	exports.BufferGeometryLoader = BufferGeometryLoader;
+	exports.ByteType = ByteType;
+	exports.Cache = Cache;
+	exports.Camera = Camera;
+	exports.CameraHelper = CameraHelper;
+	exports.CanvasRenderer = CanvasRenderer;
+	exports.CanvasTexture = CanvasTexture;
+	exports.CatmullRomCurve3 = CatmullRomCurve3;
+	exports.CineonToneMapping = CineonToneMapping;
+	exports.CircleBufferGeometry = CircleGeometry;
+	exports.CircleGeometry = CircleGeometry;
+	exports.ClampToEdgeWrapping = ClampToEdgeWrapping;
+	exports.Clock = Clock;
+	exports.Color = Color;
+	exports.ColorKeyframeTrack = ColorKeyframeTrack;
+	exports.CompressedTexture = CompressedTexture;
+	exports.CompressedTextureLoader = CompressedTextureLoader;
+	exports.ConeBufferGeometry = ConeGeometry;
+	exports.ConeGeometry = ConeGeometry;
+	exports.CubeCamera = CubeCamera;
+	exports.CubeReflectionMapping = CubeReflectionMapping;
+	exports.CubeRefractionMapping = CubeRefractionMapping;
+	exports.CubeTexture = CubeTexture;
+	exports.CubeTextureLoader = CubeTextureLoader;
+	exports.CubeUVReflectionMapping = CubeUVReflectionMapping;
+	exports.CubeUVRefractionMapping = CubeUVRefractionMapping;
+	exports.CubicBezierCurve = CubicBezierCurve;
+	exports.CubicBezierCurve3 = CubicBezierCurve3;
+	exports.CubicInterpolant = CubicInterpolant;
+	exports.CullFaceBack = CullFaceBack;
+	exports.CullFaceFront = CullFaceFront;
+	exports.CullFaceFrontBack = CullFaceFrontBack;
+	exports.CullFaceNone = CullFaceNone;
+	exports.Curve = Curve;
+	exports.CurvePath = CurvePath;
+	exports.CustomBlending = CustomBlending;
+	exports.CustomToneMapping = CustomToneMapping;
+	exports.CylinderBufferGeometry = CylinderGeometry;
+	exports.CylinderGeometry = CylinderGeometry;
+	exports.Cylindrical = Cylindrical;
+	exports.DataTexture = DataTexture;
+	exports.DataTexture2DArray = DataTexture2DArray;
+	exports.DataTexture3D = DataTexture3D;
+	exports.DataTextureLoader = DataTextureLoader;
+	exports.DataUtils = DataUtils;
+	exports.DecrementStencilOp = DecrementStencilOp;
+	exports.DecrementWrapStencilOp = DecrementWrapStencilOp;
+	exports.DefaultLoadingManager = DefaultLoadingManager;
+	exports.DepthFormat = DepthFormat;
+	exports.DepthStencilFormat = DepthStencilFormat;
+	exports.DepthTexture = DepthTexture;
+	exports.DirectionalLight = DirectionalLight;
+	exports.DirectionalLightHelper = DirectionalLightHelper;
+	exports.DiscreteInterpolant = DiscreteInterpolant;
+	exports.DodecahedronBufferGeometry = DodecahedronGeometry;
+	exports.DodecahedronGeometry = DodecahedronGeometry;
+	exports.DoubleSide = DoubleSide;
+	exports.DstAlphaFactor = DstAlphaFactor;
+	exports.DstColorFactor = DstColorFactor;
+	exports.DynamicBufferAttribute = DynamicBufferAttribute;
+	exports.DynamicCopyUsage = DynamicCopyUsage;
+	exports.DynamicDrawUsage = DynamicDrawUsage;
+	exports.DynamicReadUsage = DynamicReadUsage;
+	exports.EdgesGeometry = EdgesGeometry;
+	exports.EdgesHelper = EdgesHelper;
+	exports.EllipseCurve = EllipseCurve;
+	exports.EqualDepth = EqualDepth;
+	exports.EqualStencilFunc = EqualStencilFunc;
+	exports.EquirectangularReflectionMapping = EquirectangularReflectionMapping;
+	exports.EquirectangularRefractionMapping = EquirectangularRefractionMapping;
+	exports.Euler = Euler;
+	exports.EventDispatcher = EventDispatcher;
+	exports.ExtrudeBufferGeometry = ExtrudeGeometry;
+	exports.ExtrudeGeometry = ExtrudeGeometry;
+	exports.FaceColors = FaceColors;
+	exports.FileLoader = FileLoader;
+	exports.FlatShading = FlatShading;
+	exports.Float16BufferAttribute = Float16BufferAttribute;
+	exports.Float32Attribute = Float32Attribute;
+	exports.Float32BufferAttribute = Float32BufferAttribute;
+	exports.Float64Attribute = Float64Attribute;
+	exports.Float64BufferAttribute = Float64BufferAttribute;
+	exports.FloatType = FloatType;
+	exports.Fog = Fog;
+	exports.FogExp2 = FogExp2;
+	exports.Font = Font;
+	exports.FontLoader = FontLoader;
+	exports.FrontSide = FrontSide;
+	exports.Frustum = Frustum;
+	exports.GLBufferAttribute = GLBufferAttribute;
+	exports.GLSL1 = GLSL1;
+	exports.GLSL3 = GLSL3;
+	exports.GammaEncoding = GammaEncoding;
+	exports.GreaterDepth = GreaterDepth;
+	exports.GreaterEqualDepth = GreaterEqualDepth;
+	exports.GreaterEqualStencilFunc = GreaterEqualStencilFunc;
+	exports.GreaterStencilFunc = GreaterStencilFunc;
+	exports.GridHelper = GridHelper;
+	exports.Group = Group;
+	exports.HalfFloatType = HalfFloatType;
+	exports.HemisphereLight = HemisphereLight;
+	exports.HemisphereLightHelper = HemisphereLightHelper;
+	exports.HemisphereLightProbe = HemisphereLightProbe;
+	exports.IcosahedronBufferGeometry = IcosahedronGeometry;
+	exports.IcosahedronGeometry = IcosahedronGeometry;
+	exports.ImageBitmapLoader = ImageBitmapLoader;
+	exports.ImageLoader = ImageLoader;
+	exports.ImageUtils = ImageUtils;
+	exports.ImmediateRenderObject = ImmediateRenderObject;
+	exports.IncrementStencilOp = IncrementStencilOp;
+	exports.IncrementWrapStencilOp = IncrementWrapStencilOp;
+	exports.InstancedBufferAttribute = InstancedBufferAttribute;
+	exports.InstancedBufferGeometry = InstancedBufferGeometry;
+	exports.InstancedInterleavedBuffer = InstancedInterleavedBuffer;
+	exports.InstancedMesh = InstancedMesh;
+	exports.Int16Attribute = Int16Attribute;
+	exports.Int16BufferAttribute = Int16BufferAttribute;
+	exports.Int32Attribute = Int32Attribute;
+	exports.Int32BufferAttribute = Int32BufferAttribute;
+	exports.Int8Attribute = Int8Attribute;
+	exports.Int8BufferAttribute = Int8BufferAttribute;
+	exports.IntType = IntType;
+	exports.InterleavedBuffer = InterleavedBuffer;
+	exports.InterleavedBufferAttribute = InterleavedBufferAttribute;
+	exports.Interpolant = Interpolant;
+	exports.InterpolateDiscrete = InterpolateDiscrete;
+	exports.InterpolateLinear = InterpolateLinear;
+	exports.InterpolateSmooth = InterpolateSmooth;
+	exports.InvertStencilOp = InvertStencilOp;
+	exports.JSONLoader = JSONLoader;
+	exports.KeepStencilOp = KeepStencilOp;
+	exports.KeyframeTrack = KeyframeTrack;
+	exports.LOD = LOD;
+	exports.LatheBufferGeometry = LatheGeometry;
+	exports.LatheGeometry = LatheGeometry;
+	exports.Layers = Layers;
+	exports.LensFlare = LensFlare;
+	exports.LessDepth = LessDepth;
+	exports.LessEqualDepth = LessEqualDepth;
+	exports.LessEqualStencilFunc = LessEqualStencilFunc;
+	exports.LessStencilFunc = LessStencilFunc;
+	exports.Light = Light;
+	exports.LightProbe = LightProbe;
+	exports.Line = Line;
+	exports.Line3 = Line3;
+	exports.LineBasicMaterial = LineBasicMaterial;
+	exports.LineCurve = LineCurve;
+	exports.LineCurve3 = LineCurve3;
+	exports.LineDashedMaterial = LineDashedMaterial;
+	exports.LineLoop = LineLoop;
+	exports.LinePieces = LinePieces;
+	exports.LineSegments = LineSegments;
+	exports.LineStrip = LineStrip;
+	exports.LinearEncoding = LinearEncoding;
+	exports.LinearFilter = LinearFilter;
+	exports.LinearInterpolant = LinearInterpolant;
+	exports.LinearMipMapLinearFilter = LinearMipMapLinearFilter;
+	exports.LinearMipMapNearestFilter = LinearMipMapNearestFilter;
+	exports.LinearMipmapLinearFilter = LinearMipmapLinearFilter;
+	exports.LinearMipmapNearestFilter = LinearMipmapNearestFilter;
+	exports.LinearToneMapping = LinearToneMapping;
+	exports.Loader = Loader;
+	exports.LoaderUtils = LoaderUtils;
+	exports.LoadingManager = LoadingManager;
+	exports.LogLuvEncoding = LogLuvEncoding;
+	exports.LoopOnce = LoopOnce;
+	exports.LoopPingPong = LoopPingPong;
+	exports.LoopRepeat = LoopRepeat;
+	exports.LuminanceAlphaFormat = LuminanceAlphaFormat;
+	exports.LuminanceFormat = LuminanceFormat;
+	exports.MOUSE = MOUSE;
+	exports.Material = Material;
+	exports.MaterialLoader = MaterialLoader;
+	exports.Math = MathUtils;
+	exports.MathUtils = MathUtils;
+	exports.Matrix3 = Matrix3;
+	exports.Matrix4 = Matrix4;
+	exports.MaxEquation = MaxEquation;
+	exports.Mesh = Mesh;
+	exports.MeshBasicMaterial = MeshBasicMaterial;
+	exports.MeshDepthMaterial = MeshDepthMaterial;
+	exports.MeshDistanceMaterial = MeshDistanceMaterial;
+	exports.MeshFaceMaterial = MeshFaceMaterial;
+	exports.MeshLambertMaterial = MeshLambertMaterial;
+	exports.MeshMatcapMaterial = MeshMatcapMaterial;
+	exports.MeshNormalMaterial = MeshNormalMaterial;
+	exports.MeshPhongMaterial = MeshPhongMaterial;
+	exports.MeshPhysicalMaterial = MeshPhysicalMaterial;
+	exports.MeshStandardMaterial = MeshStandardMaterial;
+	exports.MeshToonMaterial = MeshToonMaterial;
+	exports.MinEquation = MinEquation;
+	exports.MirroredRepeatWrapping = MirroredRepeatWrapping;
+	exports.MixOperation = MixOperation;
+	exports.MultiMaterial = MultiMaterial;
+	exports.MultiplyBlending = MultiplyBlending;
+	exports.MultiplyOperation = MultiplyOperation;
+	exports.NearestFilter = NearestFilter;
+	exports.NearestMipMapLinearFilter = NearestMipMapLinearFilter;
+	exports.NearestMipMapNearestFilter = NearestMipMapNearestFilter;
+	exports.NearestMipmapLinearFilter = NearestMipmapLinearFilter;
+	exports.NearestMipmapNearestFilter = NearestMipmapNearestFilter;
+	exports.NeverDepth = NeverDepth;
+	exports.NeverStencilFunc = NeverStencilFunc;
+	exports.NoBlending = NoBlending;
+	exports.NoColors = NoColors;
+	exports.NoToneMapping = NoToneMapping;
+	exports.NormalAnimationBlendMode = NormalAnimationBlendMode;
+	exports.NormalBlending = NormalBlending;
+	exports.NotEqualDepth = NotEqualDepth;
+	exports.NotEqualStencilFunc = NotEqualStencilFunc;
+	exports.NumberKeyframeTrack = NumberKeyframeTrack;
+	exports.Object3D = Object3D;
+	exports.ObjectLoader = ObjectLoader;
+	exports.ObjectSpaceNormalMap = ObjectSpaceNormalMap;
+	exports.OctahedronBufferGeometry = OctahedronGeometry;
+	exports.OctahedronGeometry = OctahedronGeometry;
+	exports.OneFactor = OneFactor;
+	exports.OneMinusDstAlphaFactor = OneMinusDstAlphaFactor;
+	exports.OneMinusDstColorFactor = OneMinusDstColorFactor;
+	exports.OneMinusSrcAlphaFactor = OneMinusSrcAlphaFactor;
+	exports.OneMinusSrcColorFactor = OneMinusSrcColorFactor;
+	exports.OrthographicCamera = OrthographicCamera;
+	exports.PCFShadowMap = PCFShadowMap;
+	exports.PCFSoftShadowMap = PCFSoftShadowMap;
+	exports.PMREMGenerator = PMREMGenerator;
+	exports.ParametricBufferGeometry = ParametricGeometry;
+	exports.ParametricGeometry = ParametricGeometry;
+	exports.Particle = Particle;
+	exports.ParticleBasicMaterial = ParticleBasicMaterial;
+	exports.ParticleSystem = ParticleSystem;
+	exports.ParticleSystemMaterial = ParticleSystemMaterial;
+	exports.Path = Path;
+	exports.PerspectiveCamera = PerspectiveCamera;
+	exports.Plane = Plane;
+	exports.PlaneBufferGeometry = PlaneGeometry;
+	exports.PlaneGeometry = PlaneGeometry;
+	exports.PlaneHelper = PlaneHelper;
+	exports.PointCloud = PointCloud;
+	exports.PointCloudMaterial = PointCloudMaterial;
+	exports.PointLight = PointLight;
+	exports.PointLightHelper = PointLightHelper;
+	exports.Points = Points;
+	exports.PointsMaterial = PointsMaterial;
+	exports.PolarGridHelper = PolarGridHelper;
+	exports.PolyhedronBufferGeometry = PolyhedronGeometry;
+	exports.PolyhedronGeometry = PolyhedronGeometry;
+	exports.PositionalAudio = PositionalAudio;
+	exports.PropertyBinding = PropertyBinding;
+	exports.PropertyMixer = PropertyMixer;
+	exports.QuadraticBezierCurve = QuadraticBezierCurve;
+	exports.QuadraticBezierCurve3 = QuadraticBezierCurve3;
+	exports.Quaternion = Quaternion;
+	exports.QuaternionKeyframeTrack = QuaternionKeyframeTrack;
+	exports.QuaternionLinearInterpolant = QuaternionLinearInterpolant;
+	exports.REVISION = REVISION;
+	exports.RGBADepthPacking = RGBADepthPacking;
+	exports.RGBAFormat = RGBAFormat;
+	exports.RGBAIntegerFormat = RGBAIntegerFormat;
+	exports.RGBA_ASTC_10x10_Format = RGBA_ASTC_10x10_Format;
+	exports.RGBA_ASTC_10x5_Format = RGBA_ASTC_10x5_Format;
+	exports.RGBA_ASTC_10x6_Format = RGBA_ASTC_10x6_Format;
+	exports.RGBA_ASTC_10x8_Format = RGBA_ASTC_10x8_Format;
+	exports.RGBA_ASTC_12x10_Format = RGBA_ASTC_12x10_Format;
+	exports.RGBA_ASTC_12x12_Format = RGBA_ASTC_12x12_Format;
+	exports.RGBA_ASTC_4x4_Format = RGBA_ASTC_4x4_Format;
+	exports.RGBA_ASTC_5x4_Format = RGBA_ASTC_5x4_Format;
+	exports.RGBA_ASTC_5x5_Format = RGBA_ASTC_5x5_Format;
+	exports.RGBA_ASTC_6x5_Format = RGBA_ASTC_6x5_Format;
+	exports.RGBA_ASTC_6x6_Format = RGBA_ASTC_6x6_Format;
+	exports.RGBA_ASTC_8x5_Format = RGBA_ASTC_8x5_Format;
+	exports.RGBA_ASTC_8x6_Format = RGBA_ASTC_8x6_Format;
+	exports.RGBA_ASTC_8x8_Format = RGBA_ASTC_8x8_Format;
+	exports.RGBA_BPTC_Format = RGBA_BPTC_Format;
+	exports.RGBA_ETC2_EAC_Format = RGBA_ETC2_EAC_Format;
+	exports.RGBA_PVRTC_2BPPV1_Format = RGBA_PVRTC_2BPPV1_Format;
+	exports.RGBA_PVRTC_4BPPV1_Format = RGBA_PVRTC_4BPPV1_Format;
+	exports.RGBA_S3TC_DXT1_Format = RGBA_S3TC_DXT1_Format;
+	exports.RGBA_S3TC_DXT3_Format = RGBA_S3TC_DXT3_Format;
+	exports.RGBA_S3TC_DXT5_Format = RGBA_S3TC_DXT5_Format;
+	exports.RGBDEncoding = RGBDEncoding;
+	exports.RGBEEncoding = RGBEEncoding;
+	exports.RGBEFormat = RGBEFormat;
+	exports.RGBFormat = RGBFormat;
+	exports.RGBIntegerFormat = RGBIntegerFormat;
+	exports.RGBM16Encoding = RGBM16Encoding;
+	exports.RGBM7Encoding = RGBM7Encoding;
+	exports.RGB_ETC1_Format = RGB_ETC1_Format;
+	exports.RGB_ETC2_Format = RGB_ETC2_Format;
+	exports.RGB_PVRTC_2BPPV1_Format = RGB_PVRTC_2BPPV1_Format;
+	exports.RGB_PVRTC_4BPPV1_Format = RGB_PVRTC_4BPPV1_Format;
+	exports.RGB_S3TC_DXT1_Format = RGB_S3TC_DXT1_Format;
+	exports.RGFormat = RGFormat;
+	exports.RGIntegerFormat = RGIntegerFormat;
+	exports.RawShaderMaterial = RawShaderMaterial;
+	exports.Ray = Ray;
+	exports.Raycaster = Raycaster;
+	exports.RectAreaLight = RectAreaLight;
+	exports.RedFormat = RedFormat;
+	exports.RedIntegerFormat = RedIntegerFormat;
+	exports.ReinhardToneMapping = ReinhardToneMapping;
+	exports.RepeatWrapping = RepeatWrapping;
+	exports.ReplaceStencilOp = ReplaceStencilOp;
+	exports.ReverseSubtractEquation = ReverseSubtractEquation;
+	exports.RingBufferGeometry = RingGeometry;
+	exports.RingGeometry = RingGeometry;
+	exports.SRGB8_ALPHA8_ASTC_10x10_Format = SRGB8_ALPHA8_ASTC_10x10_Format;
+	exports.SRGB8_ALPHA8_ASTC_10x5_Format = SRGB8_ALPHA8_ASTC_10x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_10x6_Format = SRGB8_ALPHA8_ASTC_10x6_Format;
+	exports.SRGB8_ALPHA8_ASTC_10x8_Format = SRGB8_ALPHA8_ASTC_10x8_Format;
+	exports.SRGB8_ALPHA8_ASTC_12x10_Format = SRGB8_ALPHA8_ASTC_12x10_Format;
+	exports.SRGB8_ALPHA8_ASTC_12x12_Format = SRGB8_ALPHA8_ASTC_12x12_Format;
+	exports.SRGB8_ALPHA8_ASTC_4x4_Format = SRGB8_ALPHA8_ASTC_4x4_Format;
+	exports.SRGB8_ALPHA8_ASTC_5x4_Format = SRGB8_ALPHA8_ASTC_5x4_Format;
+	exports.SRGB8_ALPHA8_ASTC_5x5_Format = SRGB8_ALPHA8_ASTC_5x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_6x5_Format = SRGB8_ALPHA8_ASTC_6x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_6x6_Format = SRGB8_ALPHA8_ASTC_6x6_Format;
+	exports.SRGB8_ALPHA8_ASTC_8x5_Format = SRGB8_ALPHA8_ASTC_8x5_Format;
+	exports.SRGB8_ALPHA8_ASTC_8x6_Format = SRGB8_ALPHA8_ASTC_8x6_Format;
+	exports.SRGB8_ALPHA8_ASTC_8x8_Format = SRGB8_ALPHA8_ASTC_8x8_Format;
+	exports.Scene = Scene;
+	exports.SceneUtils = SceneUtils;
+	exports.ShaderChunk = ShaderChunk;
+	exports.ShaderLib = ShaderLib;
+	exports.ShaderMaterial = ShaderMaterial;
+	exports.ShadowMaterial = ShadowMaterial;
+	exports.Shape = Shape;
+	exports.ShapeBufferGeometry = ShapeGeometry;
+	exports.ShapeGeometry = ShapeGeometry;
+	exports.ShapePath = ShapePath;
+	exports.ShapeUtils = ShapeUtils;
+	exports.ShortType = ShortType;
+	exports.Skeleton = Skeleton;
+	exports.SkeletonHelper = SkeletonHelper;
+	exports.SkinnedMesh = SkinnedMesh;
+	exports.SmoothShading = SmoothShading;
+	exports.Sphere = Sphere;
+	exports.SphereBufferGeometry = SphereGeometry;
+	exports.SphereGeometry = SphereGeometry;
+	exports.Spherical = Spherical;
+	exports.SphericalHarmonics3 = SphericalHarmonics3;
+	exports.SplineCurve = SplineCurve;
+	exports.SpotLight = SpotLight;
+	exports.SpotLightHelper = SpotLightHelper;
+	exports.Sprite = Sprite;
+	exports.SpriteMaterial = SpriteMaterial;
+	exports.SrcAlphaFactor = SrcAlphaFactor;
+	exports.SrcAlphaSaturateFactor = SrcAlphaSaturateFactor;
+	exports.SrcColorFactor = SrcColorFactor;
+	exports.StaticCopyUsage = StaticCopyUsage;
+	exports.StaticDrawUsage = StaticDrawUsage;
+	exports.StaticReadUsage = StaticReadUsage;
+	exports.StereoCamera = StereoCamera;
+	exports.StreamCopyUsage = StreamCopyUsage;
+	exports.StreamDrawUsage = StreamDrawUsage;
+	exports.StreamReadUsage = StreamReadUsage;
+	exports.StringKeyframeTrack = StringKeyframeTrack;
+	exports.SubtractEquation = SubtractEquation;
+	exports.SubtractiveBlending = SubtractiveBlending;
+	exports.TOUCH = TOUCH;
+	exports.TangentSpaceNormalMap = TangentSpaceNormalMap;
+	exports.TetrahedronBufferGeometry = TetrahedronGeometry;
+	exports.TetrahedronGeometry = TetrahedronGeometry;
+	exports.TextBufferGeometry = TextGeometry;
+	exports.TextGeometry = TextGeometry;
+	exports.Texture = Texture;
+	exports.TextureLoader = TextureLoader;
+	exports.TorusBufferGeometry = TorusGeometry;
+	exports.TorusGeometry = TorusGeometry;
+	exports.TorusKnotBufferGeometry = TorusKnotGeometry;
+	exports.TorusKnotGeometry = TorusKnotGeometry;
+	exports.Triangle = Triangle;
+	exports.TriangleFanDrawMode = TriangleFanDrawMode;
+	exports.TriangleStripDrawMode = TriangleStripDrawMode;
+	exports.TrianglesDrawMode = TrianglesDrawMode;
+	exports.TubeBufferGeometry = TubeGeometry;
+	exports.TubeGeometry = TubeGeometry;
+	exports.UVMapping = UVMapping;
+	exports.Uint16Attribute = Uint16Attribute;
+	exports.Uint16BufferAttribute = Uint16BufferAttribute;
+	exports.Uint32Attribute = Uint32Attribute;
+	exports.Uint32BufferAttribute = Uint32BufferAttribute;
+	exports.Uint8Attribute = Uint8Attribute;
+	exports.Uint8BufferAttribute = Uint8BufferAttribute;
+	exports.Uint8ClampedAttribute = Uint8ClampedAttribute;
+	exports.Uint8ClampedBufferAttribute = Uint8ClampedBufferAttribute;
+	exports.Uniform = Uniform;
+	exports.UniformsLib = UniformsLib;
+	exports.UniformsUtils = UniformsUtils;
+	exports.UnsignedByteType = UnsignedByteType;
+	exports.UnsignedInt248Type = UnsignedInt248Type;
+	exports.UnsignedIntType = UnsignedIntType;
+	exports.UnsignedShort4444Type = UnsignedShort4444Type;
+	exports.UnsignedShort5551Type = UnsignedShort5551Type;
+	exports.UnsignedShort565Type = UnsignedShort565Type;
+	exports.UnsignedShortType = UnsignedShortType;
+	exports.VSMShadowMap = VSMShadowMap;
+	exports.Vector2 = Vector2;
+	exports.Vector3 = Vector3;
+	exports.Vector4 = Vector4;
+	exports.VectorKeyframeTrack = VectorKeyframeTrack;
+	exports.Vertex = Vertex;
+	exports.VertexColors = VertexColors;
+	exports.VideoTexture = VideoTexture;
+	exports.WebGL1Renderer = WebGL1Renderer;
+	exports.WebGLCubeRenderTarget = WebGLCubeRenderTarget;
+	exports.WebGLMultisampleRenderTarget = WebGLMultisampleRenderTarget;
+	exports.WebGLRenderTarget = WebGLRenderTarget;
+	exports.WebGLRenderTargetCube = WebGLRenderTargetCube;
+	exports.WebGLRenderer = WebGLRenderer;
+	exports.WebGLUtils = WebGLUtils;
+	exports.WireframeGeometry = WireframeGeometry;
+	exports.WireframeHelper = WireframeHelper;
+	exports.WrapAroundEnding = WrapAroundEnding;
+	exports.XHRLoader = XHRLoader;
+	exports.ZeroCurvatureEnding = ZeroCurvatureEnding;
+	exports.ZeroFactor = ZeroFactor;
+	exports.ZeroSlopeEnding = ZeroSlopeEnding;
+	exports.ZeroStencilOp = ZeroStencilOp;
+	exports.sRGBEncoding = sRGBEncoding;
+
+	Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
diff --git a/main.py b/main.py
new file mode 100644
index 0000000..efde0c7
--- /dev/null
+++ b/main.py
@@ -0,0 +1,224 @@
+from flask import Flask, render_template, request
+import random
+
+from flask.helpers import url_for
+app = Flask(__name__)
+"""
+2-bromobutane
+benzene
+butane
+ethanal
+ethanoic_acid
+hex-3-yne
+1-methoxypropane
+n-methylbutan-2-amine
+n_n-dimethylpropanamide
+pent-2-ene
+pentan-2-one
+propan-2-ol
+propyl_ethanoate
+
+
+"""
+
+frontlist=[
+
+'Aristotle',
+
+'Democritus (300 B.C)',
+
+'All matter made up of tiny particles (atoms)',
+
+'Thomson Model of the Atom',
+
+'Calculate relative charge and mass of the electron',
+
+'Ernest Rutherford (1911)',
+
+'Proved the existence of the neutron',
+
+'Neils Bohr',
+
+'Quantum Hypothesis made to explain observations',
+
+'The energy of the photon is transferred to the electron',
+
+'Energy level must be filled before moving up next level',
+
+'Pauli Exclusion Principle',
+
+'Hund’s Rule',
+
+'Ionic Compounds',
+
+'Molecular Compounds',
+
+'What type of bond? ΔEN = 0.2',
+
+'What type of bond? ΔEN = 1.9'
+]
+
+backlist=[
+
+'Only four elements earth, air, fire and water',
+
+'Atoms are made of tiny, indivisible things',
+
+'Dalton’s Atomic Theory',
+
+'Electrons could be emitted from matter',
+
+'Robert Millikan (1909)',
+
+'Discovered atom is mostly empty space',
+
+'James Chadwick (1932)',
+
+'The Planetary Model',
+
+'Max Planck (1900)',
+
+'Einstein (1905)',
+
+'Aufbau Principle',
+
+'No 2 e- in an atom can have 4 quantum numbers, on 2 e- can exist per orbital',
+
+'1 e- is placed in each suborbital',
+
+'Made of ionic bonds, usually between metals and nonmetals, bonded in a crystal lattice structure, EN >= 1.7',
+
+'Covalent bonds between 2 nonmetals, EN = 0 to 0.5 is nonpolar',
+
+'Non-polar bond',
+
+'Polar bond'
+
+]
+
+correct='<div class="answer"><h1 class="c">&check;</h1><p class="c">Correct!</p><p>Your answer:</p><p>'
+incorrect='<div class="answer"><h1 class="x">&cross;</h1><p class="x">Incorrect!</p><p>Your answer:</p><p>'
+style='<style>input{display:none;}.hide{display:none;}</style>'
+answerdict={
+    'in1.1':'</p><hr/> <p>Correct answer:</p><table class="hct"> <tr> <th>System</th> <th>Surrounding</th> </tr><tr> <td>Metal</td><td>Water</td></tr><tr> <td>m=300g</td><td>m=500g</td></tr><tr> <td>c=?</td><td>c=4.184 J/g°C</td></tr><tr><td>T<sub>1</sub>=915°C</td><td>T<sub>1</sub>=21.5°C</td></tr><tr><td>T<sub>2</sub>=74.6°C</td><td>T <sub>2</sub>=74.6°C</td></tr><tr><td>𝚫T=-840.4°C</td><td>𝚫T=+53.1°C</td></tr></table><div><p>Q=mcT</p><p>Q=(500g)(4.184 J/g°C)(53.1°C)</p><p>Q<sub>water</sub>=111,085.2 J</p><p>Q<sub>metal</sub>=-111,085.2 J</p><p>c=-111,085.2J / (300g)(-840.4°C)</p><p>c=0.44060447 J/g°C</p><p>c=0.4406 J/g°C</p></div></div>',
+    'in1.2':'</p><hr/> <p>Correct answer:</p><table class="hct"> <tr> <th>Substance</th> <th>Heat Capacity</th> </tr><tr style="background-color: #6cb400"> <td>Iron</td><td>0.440</td></tr><tr> <td>Lithium</td><td>3.56</td></tr><tr> <td>Sodium</td><td>1.23</td></tr><tr> <td>Aluminum</td><td>0.900</td></tr><tr> <td>Potassium</td><td>0.75</td></tr><tr> <td>Lead</td><td>0.160</td></tr><tr> <td>Gold</td><td>0.1290</td></tr></table> <p>Iron is most likely</p></div>',
+    'in2.1':'</p><hr/> <p>Correct answer:</p><p> 2C<sub>6</sub>H<sub>14</sub> + 19O<sub>2</sub> → 12CO<sub >2</sub > + 14H<sub>2</sub>O </p></div>',
+    'in2.2':'</p><hr/> <p>Correct answer:</p><p> ΔH=∑[(n)(ΔH<sub>f</sub> Products)] - ∑[(n)(ΔH<sub>f</sub> Reactants)] </p><p> ΔH=[(12 mol)(ΔH<sub>f</sub> CO<sub>2</sub>) + (14 mol)(ΔH<sub >f</sub > H<sub>2</sub>O)] - [(2 mol)(ΔH<sub>f</sub> C<sub>6</sub>H<sub>14</sub>) + (19 mol)(ΔH<sub>f</sub> O<sub>2</sub>)] </p><p> ΔH=[(12 mol)(-393.5 kJ/mol) + (14 mol)(-285.8 kJ/mol)] - [(2 mol)(-198.67 kJ/mol) + <s>(19 mol)(0 kJ/mol)</s>] </p><p>ΔH=[-8723.2 kJ] - [-397.34 kJ]</p><p>ΔH=-8325.86 kJ</p></div>',
+    'in2.3':'</p><hr/> <p>Correct answer:</p><p>ΔH=(n)(ΔH<sub>x</sub>)</p><p>ΔH<sub>x</sub>=-8325.86 kJ / 2 mol</p><p>ΔH<sub>x</sub>=-4162.93 kJ/mol</p></div>',
+    'in3.1':'</p><hr/> <p>Correct answer:</p><p>ΔS=∑[(n)(ΔS Products)] - ∑[(n)(ΔS Reactants)]</p><p> ΔS=[(2 mol)(ΔS LiOH) + (1 mol)(ΔS H<sub>2</sub>)] - [(2 mol)(ΔS Li) + (2 mol)(ΔS H<sub>2</sub>O)] </p><p>ΔS=[(2 mol)(47.97 J/mol*K) + (1 mol)(130.6  J/mol*K)] - [(2 mol)(ΔS 29.09 J/mol*K) + (2 mol)(69.95 J/mol*K)]</p><p>ΔS=[226.54 J/mol*K] - [198.08 J/mol*K]</p><p>ΔS=28.46 J/mol*K</p></div>',
+    'in3.2':'</p><hr/> <p>Correct answer:</p><p>Yes, because the ΔS is positive</p></div>'
+}
+
+@app.route("/")
+def home():
+    return render_template("main.html")
+
+@app.route("/chem12cpt/")
+def chem12cpt():
+    return render_template("chem12cpt.html")
+
+#UNITS
+@app.route("/chem12cpt/unit1/")
+def unit1():
+    return render_template("unit1.html")
+
+@app.route("/chem12cpt/unit2/")
+def unit2():
+    f = '<p>ftest</p><p>test</p>'
+    b = '<p>btest</p><p>test</p>'
+    r = random.randint(0, len(frontlist)-1)
+    return render_template("card.html", front=f"<p>{frontlist[r]}</p>", back=f"<p>{backlist[r]}</p>")
+
+
+
+@app.route("/chem12cpt/unit3/", methods=["POST","GET"])
+def unit3():
+    if request.method == "POST":
+        in11 = request.form['in1.1']
+        in12 = request.form['in1.2']
+        in211 = request.form['in2.1.1']
+        in212 = request.form['in2.1.2']
+        in213 = request.form['in2.1.3']
+        in214 = request.form['in2.1.4']
+        in22 = request.form['in2.2']
+        in23 = request.form['in2.3']
+        in31 = request.form['in3.1']
+        in32 = request.form['in3.2']
+        print(in11)
+        print(in211)
+        """ 
+        for key in a_dict:
+            print(key)
+        """
+
+        indic={}
+        try:
+            if float(in11) > 0.43 and float(in11) < 0.45:
+                print("correct")
+                indic['in1.1']=f"{correct}{in11}{answerdict['in1.1']}"
+            else:
+                indic['in1.1']=f"{incorrect}{in11}{answerdict['in1.1']}"
+        except:
+            indic['in1.1']=f"{incorrect}{in11}{answerdict['in1.1']}"
+
+        try:
+            if in12.lower() == 'iron':
+                indic['in1.2']=f"{correct}{in12}{answerdict['in1.2']}"
+            else:
+                indic['in1.2']=f"{incorrect}{in12}{answerdict['in1.2']}"
+        except:
+            indic['in1.2']=f"{incorrect}{in12}{answerdict['in1.2']}"
+
+        try:
+            if in211=='2C6H14' and in212=='19O2' and in213=='12CO2' and in214=='14H2O' or in211=='2C6H14' and in212=='19O2' and in213=='14H2O' and in214=='12CO2':
+                indic['in2.1']=f"{correct}{in211} + {in212} → {in213}+ {in214}{answerdict['in2.1']}"
+            else:
+                indic['in2.1']=f"{incorrect}{in211} + {in212} → {in213} + {in214}{answerdict['in2.1']}"
+        except:
+            indic['in2.1']=f"{incorrect}{in211} + {in212} → {in213} + {in214}{answerdict['in2.1']}"
+        
+        try:
+            if float(in22) > -8400 and float(in22) < -8300:
+                indic['in2.2']=f"{correct}{in22} kJ{answerdict['in2.2']}"
+            else:
+                indic['in2.2']=f"{incorrect}{in22} kJ{answerdict['in2.2']}"
+        except:
+            indic['in2.2']=f"{incorrect}{in22} kJ{answerdict['in2.2']}"
+        try:
+            if float(in23) > -4200 and float(in23) < -4100:
+                indic['in2.3']=f"{correct}{in23} kJ/mol{answerdict['in2.3']}"
+            else:
+                indic['in2.3']=f"{incorrect}{in23}  kJ/mol{answerdict['in2.3']}"
+        except:
+            indic['in2.3']=f"{incorrect}{in23}  kJ/mol{answerdict['in2.3']}"
+        try:
+            if float(in31) > 27 and float(in31) < 29:
+                indic['in3.1']=f"{correct}{in31} J/mol*K{answerdict['in3.1']}"
+            else:
+                indic['in3.1']=f"{incorrect}{in31} J/mol*K{answerdict['in3.1']}"
+        except:
+            indic['in3.1']=f"{incorrect}{in31} J/mol*K{answerdict['in3.1']}"
+        try:
+            if in32.lower() == 'yes':
+                indic['in3.2']=f"{correct}{in32}{answerdict['in3.2']}"
+            else:
+                indic['in3.2']=f"{incorrect}{in32}{answerdict['in3.2']}"
+        except:
+            indic['in3.2']=f"{incorrect}{in32}{answerdict['in3.2']}"
+        #print(in11)
+        print(in12)
+        return render_template("unit3.html", style=style, testa=indic)
+    return render_template("unit3.html")
+
+@app.route("/chem12cpt/unit4/")
+def unit4():
+    return render_template("unit4.html")
+
+
+
+@app.route("/3d/<model>/")
+def model(model):
+    return render_template("model.html", model=model)
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", debug=False, port=80)
\ No newline at end of file
diff --git a/static/css/card.css b/static/css/card.css
new file mode 100644
index 0000000..c972078
--- /dev/null
+++ b/static/css/card.css
@@ -0,0 +1,72 @@
+
+body {
+    font-size: 3em;
+    background-color: #2c2c2c; 
+    font-family: "Roboto", sans-serif;
+    margin: auto;
+    margin-top: 5vh;
+    text-align: center;
+  }
+a{
+  background-color: #535353;
+
+  border: none;
+  border-radius: 0.5em;
+  color: white;
+  text-align: center;
+  text-decoration: none;
+  display: inline-block;
+  padding: 10px;
+  cursor: pointer;
+}
+.scene {
+  width: 50vw;
+  height: 50vh;
+  margin: auto;
+  perspective: 70vh;
+  padding-bottom: 5vh;
+}
+
+.card {
+  position: relative;
+  width: 100%;
+  height: 100%;
+  
+  cursor: pointer;
+  transform-style: preserve-3d;
+  transform-origin: center right;
+  transition: transform 0.7s;
+}
+
+.card.is-flipped {
+  transform:  rotateX(-180deg);
+}
+.cardtext{
+    padding-left: 20%;
+    padding-right: 20%;
+  padding-top: 10%;
+}
+.card__face {
+  border-radius: 75px;
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  color: white;
+  text-align: center;
+  font-weight: bold;
+  font-size: 40px;
+  backface-visibility: hidden;
+}
+.refresh{
+  border: #229100;
+  border-radius: 75px;
+}
+.card__face--front {
+  background: #229100;
+  
+}
+
+.card__face--back {
+  background: black;
+  transform: rotateX(180deg);
+}
diff --git a/static/css/chem12cpt.css b/static/css/chem12cpt.css
new file mode 100644
index 0000000..03af711
--- /dev/null
+++ b/static/css/chem12cpt.css
@@ -0,0 +1,59 @@
+body {
+  font-size: 1em;
+  background-color: #2c2c2c;
+  font-family: "Roboto", sans-serif;
+  margin: auto;
+  /* margin-top: 30vh;*/
+  text-align: center;
+  color: white;
+}
+::-webkit-scrollbar {
+  background-color: #202324;
+  color: #aba499;
+}
+::-webkit-scrollbar-corner {
+  background-color: #181a1b;
+}
+::-webkit-scrollbar-thumb {
+  background-color: #535353;
+}
+p.links {
+  color: #229100;
+}
+button {
+  background-color: #229100;
+  border: none;
+  border-radius: 0.5em;
+  color: white;
+  text-align: center;
+  text-decoration: none;
+  display: inline-block;
+  padding: 10px;
+  cursor: pointer;
+}
+
+a {
+  color: white;
+  border-radius: 0.5em;
+  text-decoration: none;
+}
+
+.wrapper {
+  border-radius: 2em;
+  padding: 2em;
+  width: 30%;
+  margin-bottom: 2em;
+  margin: auto;
+  margin-top:0;
+  overflow: hidden; /* add this to contain floated children */
+}
+.first {
+  width: 50%;
+
+  float: left; /* add this */
+}
+.second {
+  width: 50%;
+
+  float: right; /* add this */
+}
diff --git a/static/css/main.css b/static/css/main.css
new file mode 100644
index 0000000..6eaf71c
--- /dev/null
+++ b/static/css/main.css
@@ -0,0 +1,257 @@
+body {
+  font-size: 3em;
+  background-color: #2c2c2c; 
+  font-family: "Roboto", sans-serif;
+  margin: auto;
+  margin-top: 30vh;
+  text-align: center;
+}
+
+a{
+  background-color: #535353;
+
+  border: none;
+  border-radius: 0.5em;
+  color: white;
+  text-align: center;
+  text-decoration: none;
+  display: inline-block;
+  padding: 10px;
+  cursor: pointer;
+}
+h1 {
+  color: #229100;
+
+  
+}
+
+/** UNDERLINE
+:root {
+  --mainColor: #00b1c9;
+}
+
+
+a {
+  background:
+     linear-gradient(
+       to bottom, var(--mainColor) 0%,
+       var(--mainColor) 100%
+     );
+  font-weight: bold;
+  background-position: 0 100%;
+  background-repeat: repeat-x;
+  background-size: 4px 4px;
+  text-decoration: none;
+  transition: background-size .2s;
+}
+
+a:hover {
+  background-size: 4px 50px;
+}
+
+
+
+ * ----------------------------------------
+ * animation text-pop-up-top
+ * ----------------------------------------
+ */
+
+/* DARW BOX   #243754   
+      <div class="wrapper">
+        <span class="square">
+          <a class="tenth before after" href="#">Chem 12 CPT</a>
+        </span>
+      </div>
+.wrapper{
+  margin:3em 0;
+}
+a,a:visited,a:hover,a:active{
+  -webkit-backface-visibility:hidden;
+          backface-visibility:hidden;
+	position:relative;
+  transition:0.5s color ease;
+	text-decoration:none;
+	color:#229100;
+	font-size:2.5em;
+}
+a:hover{
+	color:#40e7e7;
+}
+a.before:before,a.after:after{
+  content: "";
+  transition:0.5s all ease;
+  -webkit-backface-visibility:hidden;
+          backface-visibility:hidden;
+  position:absolute;
+}
+a.before:before{
+  top:-0.25em;
+}
+a.after:after{
+  bottom:-0.25em;
+}
+a.before:before,a.after:after{
+  height:5px;
+  height:0.35rem;
+  width:0;
+  background:#40e7e7;
+}
+a.first:after{
+  left:0;
+}
+a.second:after{
+  right:0;
+}
+a.third:after,a.sixth:before,a.sixth:after{
+  left:50%;
+  -webkit-transform:translateX(-50%);
+          transform:translateX(-50%);
+}
+a.fourth:before,a.fourth:after{
+  left:0;
+}
+a.fifth:before,a.fifth:after{
+  right:0;
+}
+a.seventh:before{
+  right:0;
+}
+a.seventh:after{
+  left:0;
+}
+a.eigth:before{
+  left:0;
+}
+a.eigth:after{
+  right:0;
+}
+a.before:hover:before,a.after:hover:after{
+  width:100%;
+}
+.square{
+  box-sizing:border-box;
+  margin-left:-0.4em;
+  position:relative;
+  font-size:1em;
+  overflow:hidden;
+}
+.square a{
+  position:static;
+  font-size:100%;
+  padding:0.2em 0.4em;
+}
+.square:before,.square:after{
+  content: "";
+  box-sizing:border-box;
+  transition:0.25s all ease;
+  -webkit-backface-visibility:hidden;
+          backface-visibility:hidden;
+  position:absolute;
+  width:5px;
+  width:0.35rem;
+  height:0;
+  background:#40e7e7;
+}
+.square:before{
+  left:0;
+  bottom:-0.2em;
+}
+.square.individual:before{
+  transition-delay:0.6s;
+}
+.square:after{
+  right:0;
+  top:-0.2em;
+}
+.square.individual:after{
+  transition-delay:0.2s;
+}
+.square a:before{
+  left:0;
+  transition:0.25s all ease;
+}
+.square a:after{
+  right:0;
+  transition:0.25s all ease;
+}
+.square.individual a:after{
+  transition:0.25s all ease 0.4s;
+}
+.square:hover:before,.square:hover:after{
+  height:calc(100% + 0.4em);
+}
+.square:hover a:before,.square:hover a:after{
+  width:100%;
+}
+
+*/
+
+body::-webkit-scrollbar {
+  width: 0;
+}
+body::-webkit-scrollbar- {
+  width: 0;
+}
+
+/* ----------------------------------------------
+ * Generated by Animista on 2020-12-31 16:52:43
+ * Licensed under FreeBSD License.
+ * See http://animista.net/license for more info. 
+ * w: http://animista.net, t: @cssanimista
+ * ---------------------------------------------- */
+
+/**
+ * ----------------------------------------
+ * animation text-pop-up-top
+ * ----------------------------------------
+ */
+@-webkit-keyframes text-pop-up-top {
+  0% {
+    -webkit-transform: translateY(0);
+    transform: translateY(0);
+    -webkit-transform-origin: 50% 50%;
+    transform-origin: 50% 50%;
+    text-shadow: none;
+  }
+  100% {
+    -webkit-transform: translateY(-50px);
+    transform: translateY(-50px);
+    -webkit-transform-origin: 50% 50%;
+    transform-origin: 50% 50%;
+    text-shadow: 0 1px 0 #229100, 0 2px 0 #229100, 0 3px 0 #229100,
+      0 4px 0 #229100, 0 5px 0 #229100, 0 6px 0 #229100, 0 7px 0 #229100,
+      0 8px 0 #229100, 0 9px 0 #229100, 0 50px 30px rgba(0, 0, 0, 0.3);
+  }
+}
+@keyframes text-pop-up-top {
+  0% {
+    -webkit-transform: translateY(0);
+    transform: translateY(0);
+    -webkit-transform-origin: 50% 50%;
+    transform-origin: 50% 50%;
+    text-shadow: none;
+  }
+  100% {
+    -webkit-transform: translateY(-50px);
+    transform: translateY(-50px);
+    -webkit-transform-origin: 50% 50%;
+    transform-origin: 50% 50%;
+    text-shadow: 0 1px 0 #229100, 0 2px 0 #229100, 0 3px 0 #229100,
+      0 4px 0 #229100, 0 5px 0 #229100, 0 6px 0 #229100, 0 7px 0 #229100,
+      0 8px 0 #229100, 0 9px 0 #229100, 0 50px 30px rgba(0, 0, 0, 0.3);
+  }
+}
+
+.text-pop-up-top {
+  -webkit-animation: text-pop-up-top 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94)
+    both;
+  animation: text-pop-up-top 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
+}
+
+
+iframe{
+  margin: auto;
+  width: 100%;
+  border: 0;
+  
+}
\ No newline at end of file
diff --git a/static/css/unit1.css b/static/css/unit1.css
new file mode 100644
index 0000000..d062b76
--- /dev/null
+++ b/static/css/unit1.css
@@ -0,0 +1,93 @@
+a {
+  color: #229100;
+}
+a.button{
+  background-color: #535353;
+
+  border: none;
+  border-radius: 0.5em;
+  color: white;
+  text-align: center;
+  text-decoration: none;
+  display: inline-block;
+  padding: 10px;
+  cursor: pointer;
+}
+iframe {
+  border-radius: 10px;
+  border-color: #229100;
+  width: 100%;
+  height: inherit;
+}
+
+img{
+    width: 100%;
+    border-radius: 10px;
+    border-color: #229100;
+}
+.hide{
+  display: none;
+}
+.t{
+  color: #fff;
+}
+.wrapper {
+  border-radius: 2em;
+  padding: 2em;
+  background: #535353;
+  margin-bottom: 2em;
+  width: 55%;
+  height: 30vh;
+  margin: auto;
+  overflow: hidden; /* add this to contain floated children */
+}
+.first {
+  width: 59%;
+  height: inherit;
+  float: left; /* add this */
+}
+.second {
+  width: 40%;
+  height: inherit;
+  float: right; /* add this */
+}
+
+/** Switch
+ -------------------------------------*/
+
+.switch input {
+  position: absolute;
+  opacity: 0;
+  
+}
+
+/**
+   * 1. Adjust this to size
+   */
+
+.switch {
+  display: inline-block;
+  font-size: 20px; /* 1 */
+  height: 1em;
+  width: 2em;
+  background: #bdb9a6;
+  border-radius: 1em;
+  margin-right: 10px;
+}
+
+.switch div {
+  height: 1em;
+  width: 1em;
+  border-radius: 1em;
+  background: #fff;
+  box-shadow: 0 0.1em 0.3em rgba(0, 0, 0, 0.3);
+  -webkit-transition: all 300ms;
+  -moz-transition: all 300ms;
+  transition: all 300ms;
+}
+
+.switch input:checked + div {
+  -webkit-transform: translate3d(100%, 0, 0);
+  -moz-transform: translate3d(100%, 0, 0);
+  transform: translate3d(100%, 0, 0);
+}
diff --git a/static/css/unit2.css b/static/css/unit2.css
new file mode 100644
index 0000000..e69de29
diff --git a/static/css/unit3.css b/static/css/unit3.css
new file mode 100644
index 0000000..fffc03c
--- /dev/null
+++ b/static/css/unit3.css
@@ -0,0 +1,98 @@
+.content {
+  width: 40%;
+  margin: auto;
+  text-align: left;
+}
+.hct {
+  width: 100%;
+  margin: auto;
+  border: #000000;
+  border-style: solid;
+}
+.baleq {
+  width: 4em;
+}
+h1.c {
+  color: greenyellow;
+  margin: 0;
+  padding: 0;
+  display: inline;
+}
+h1.x {
+  color: red;
+  margin: 0;
+  padding: 0;
+  display: inline;
+}
+
+p.c {
+  color: greenyellow;
+  display: inline;
+  font-size: 1.5em;
+}
+p.x {
+  color: red;
+  display: inline;
+  font-size: 1.5em;
+}
+.q1 {
+  border-radius: 2em;
+  padding: 2em;
+  background: #535353;
+  margin-bottom: 2em;
+}
+
+.q2 {
+  border-radius: 2em;
+  padding: 2em;
+  background: #535353;
+  margin-bottom: 2em;
+}
+
+.q3 {
+  border-radius: 2em;
+  padding: 2em;
+  background: #535353;
+  margin-bottom: 2em;
+}
+
+a.button {
+  background-color: #535353;
+  color: #ffffff;
+  text-decoration: none;
+  padding: 15px;
+}
+
+h4 {
+  margin: 0;
+}
+.title {
+  text-align: center;
+}
+.subbut {
+  text-align: right;
+  border-radius: 0.5em;
+  font-size:1.4em;
+  cursor: pointer;
+  background-color: #535353;
+}
+tr:nth-child(even) {
+  background-color: #2c2c2c;
+}
+tr:nth-child(odd) {
+  background-color: #535353;
+}
+input {
+  margin-bottom: 2em;
+  padding: 8px;
+  border: none;
+  border-bottom: 1px solid #2c2c2c;
+  background-color: #2c2c2c;
+  color: #ffffff;
+}
+
+.answer {
+  padding: 1em;
+  border-radius: 1.5em;
+  background-color: #2c2c2c;
+}
diff --git a/static/css/unit4.css b/static/css/unit4.css
new file mode 100644
index 0000000..bc62ab9
--- /dev/null
+++ b/static/css/unit4.css
@@ -0,0 +1,60 @@
+.walk {
+  margin: auto;
+  width: 60%;
+  border-radius: 2em;
+  padding: 2em;
+  background: #535353;
+  margin-bottom: 2em;
+}
+p.quest {
+  margin: auto;
+  width: 60%;
+}
+.hl {
+  color: #229100;
+}
+.hl2 {
+  color: #229100;
+}
+.answer {
+  padding: 1em;
+  border-radius: 1.5em;
+  background-color: #2c2c2c;
+  overflow: hidden;
+}
+.wrapper {
+  padding-top: 2em;
+  margin-bottom: 2em;
+  margin: auto;
+  overflow: hidden; /* add this to contain floated children */
+}
+.first {
+  width: 50%;
+  float: left; /* add this */
+  text-align: left;
+}
+.second {
+  width: 50%;
+  float: right; /* add this */
+}
+.ice {
+  margin: auto;
+}
+tr:nth-child(even) {
+  background-color: #2c2c2c;
+}
+tr:nth-child(odd) {
+  background-color: #535353;
+}
+a.button {
+  background-color: #535353;
+  color: #ffffff;
+  text-decoration: none;
+  padding: 15px;
+}
+.hide{
+  display: none;
+}
+.t{
+  color: white;
+}
\ No newline at end of file
diff --git a/static/docs/studyguide.pdf b/static/docs/studyguide.pdf
new file mode 100644
index 0000000..97a6e10
Binary files /dev/null and b/static/docs/studyguide.pdf differ
diff --git a/static/img/1-methoxypropane.png b/static/img/1-methoxypropane.png
new file mode 100644
index 0000000..8a18810
Binary files /dev/null and b/static/img/1-methoxypropane.png differ
diff --git a/static/img/benzene.png b/static/img/benzene.png
new file mode 100644
index 0000000..b7a40ca
Binary files /dev/null and b/static/img/benzene.png differ
diff --git a/static/img/butane.png b/static/img/butane.png
new file mode 100644
index 0000000..151029b
Binary files /dev/null and b/static/img/butane.png differ
diff --git a/static/img/ethanal.png b/static/img/ethanal.png
new file mode 100644
index 0000000..537b98d
Binary files /dev/null and b/static/img/ethanal.png differ
diff --git a/static/img/ethanoic_acid.png b/static/img/ethanoic_acid.png
new file mode 100644
index 0000000..5c7fe68
Binary files /dev/null and b/static/img/ethanoic_acid.png differ
diff --git a/img/favicon.ico b/static/img/favicon.ico
similarity index 100%
rename from img/favicon.ico
rename to static/img/favicon.ico
diff --git a/static/img/hex-3-yne.png b/static/img/hex-3-yne.png
new file mode 100644
index 0000000..d1f782c
Binary files /dev/null and b/static/img/hex-3-yne.png differ
diff --git a/static/img/n-methylbutan-2-amine.png b/static/img/n-methylbutan-2-amine.png
new file mode 100644
index 0000000..4b207e4
Binary files /dev/null and b/static/img/n-methylbutan-2-amine.png differ
diff --git a/static/img/n_n-dimethylpropanamide.png b/static/img/n_n-dimethylpropanamide.png
new file mode 100644
index 0000000..72ad7e8
Binary files /dev/null and b/static/img/n_n-dimethylpropanamide.png differ
diff --git a/static/img/pent-2-ene.png b/static/img/pent-2-ene.png
new file mode 100644
index 0000000..49bfb2b
Binary files /dev/null and b/static/img/pent-2-ene.png differ
diff --git a/static/img/pentan-2-one.png b/static/img/pentan-2-one.png
new file mode 100644
index 0000000..2a6fd3f
Binary files /dev/null and b/static/img/pentan-2-one.png differ
diff --git a/static/img/propan-2-ol.png b/static/img/propan-2-ol.png
new file mode 100644
index 0000000..cbc4f76
Binary files /dev/null and b/static/img/propan-2-ol.png differ
diff --git a/static/img/propyl_ethanoate.png b/static/img/propyl_ethanoate.png
new file mode 100644
index 0000000..bb42fb3
Binary files /dev/null and b/static/img/propyl_ethanoate.png differ
diff --git a/static/models/organic/1-methoxypropane.glb b/static/models/organic/1-methoxypropane.glb
new file mode 100644
index 0000000..1197e19
Binary files /dev/null and b/static/models/organic/1-methoxypropane.glb differ
diff --git a/static/models/organic/2-bromobutane.glb b/static/models/organic/2-bromobutane.glb
new file mode 100644
index 0000000..6336105
Binary files /dev/null and b/static/models/organic/2-bromobutane.glb differ
diff --git a/static/models/organic/benzene.glb b/static/models/organic/benzene.glb
new file mode 100644
index 0000000..06d4563
Binary files /dev/null and b/static/models/organic/benzene.glb differ
diff --git a/static/models/organic/butane.glb b/static/models/organic/butane.glb
new file mode 100644
index 0000000..8856d75
Binary files /dev/null and b/static/models/organic/butane.glb differ
diff --git a/static/models/organic/ethanal.glb b/static/models/organic/ethanal.glb
new file mode 100644
index 0000000..9d3deaf
Binary files /dev/null and b/static/models/organic/ethanal.glb differ
diff --git a/static/models/organic/ethanoic_acid.glb b/static/models/organic/ethanoic_acid.glb
new file mode 100644
index 0000000..22c3288
Binary files /dev/null and b/static/models/organic/ethanoic_acid.glb differ
diff --git a/static/models/organic/hex-3-yne.glb b/static/models/organic/hex-3-yne.glb
new file mode 100644
index 0000000..cacac0f
Binary files /dev/null and b/static/models/organic/hex-3-yne.glb differ
diff --git a/static/models/organic/n-methylbutan-2-amine.glb b/static/models/organic/n-methylbutan-2-amine.glb
new file mode 100644
index 0000000..ba11255
Binary files /dev/null and b/static/models/organic/n-methylbutan-2-amine.glb differ
diff --git a/static/models/organic/n_n-dimethylpropanamide.glb b/static/models/organic/n_n-dimethylpropanamide.glb
new file mode 100644
index 0000000..e35919c
Binary files /dev/null and b/static/models/organic/n_n-dimethylpropanamide.glb differ
diff --git a/static/models/organic/pent-2-ene.glb b/static/models/organic/pent-2-ene.glb
new file mode 100644
index 0000000..e9d9c1f
Binary files /dev/null and b/static/models/organic/pent-2-ene.glb differ
diff --git a/static/models/organic/pentan-2-one.glb b/static/models/organic/pentan-2-one.glb
new file mode 100644
index 0000000..f14400d
Binary files /dev/null and b/static/models/organic/pentan-2-one.glb differ
diff --git a/static/models/organic/propan-2-ol.glb b/static/models/organic/propan-2-ol.glb
new file mode 100644
index 0000000..babb980
Binary files /dev/null and b/static/models/organic/propan-2-ol.glb differ
diff --git a/static/models/organic/propyl_ethanoate.glb b/static/models/organic/propyl_ethanoate.glb
new file mode 100644
index 0000000..553c4e3
Binary files /dev/null and b/static/models/organic/propyl_ethanoate.glb differ
diff --git a/templates/card.html b/templates/card.html
new file mode 100644
index 0000000..d73753b
--- /dev/null
+++ b/templates/card.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Ethan's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/card.css') }}"
+    />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/chem12cpt.css') }}"
+    />
+    <link
+      rel="icon"
+      href="{{ url_for('static',filename='img/favicon.ico') }}"
+    />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body>
+    <h3>Click card to flip.</h3>
+    <div class="scene scene--card">
+      <div class="card">
+        <div class="card__face card__face--front">
+          <div class="cardtext">{{ front|safe }}</div>
+        </div>
+        <div class="card__face card__face--back">
+          <div class="cardtext">{{ back|safe }}</div>
+        </div>
+      </div>
+    </div>
+    <a href="../" class="button">Go Back</a>
+    <a onClick="window.location.reload()" class="button">Next</a>
+
+    <style></style>
+    <script>
+      var card = document.querySelector(".card");
+      card.addEventListener("click", function () {
+        card.classList.toggle("is-flipped");
+      });
+    </script>
+  </body>
+</html>
diff --git a/templates/chem12cpt.html b/templates/chem12cpt.html
new file mode 100644
index 0000000..e68e69c
--- /dev/null
+++ b/templates/chem12cpt.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Ethan's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/chem12cpt.css') }}"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/main.css') }}"
+    />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link
+      rel="icon"
+      href="{{ url_for('static',filename='img/favicon.ico') }}"
+    />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body style="margin-top: 1vh">
+    <div>
+      <h1>Chemistry 12 CPT</h1>
+    </div>
+    <div>
+      <p>
+        <a href="{{ url_for('static',filename='docs/studyguide.pdf') }}"
+          >Study Guide Units 1,2,3,4</a
+        >
+      </p>
+      <p class="links">Creative components:</p>
+      <div class="wrapper">
+        <div class="first">
+          <p><a href="./unit1">Unit 1</a></p>
+
+          <p><a href="./unit2">Unit 2</a></p>
+        </div>
+        <div class="second">
+          <p><a href="./unit3">Unit 3</a></p>
+
+          <p><a href="./unit4">Unit 4</a></p>
+        </div>
+      </div>
+    </div>
+  </body>
+</html>
diff --git a/templates/main.html b/templates/main.html
new file mode 100644
index 0000000..f083c4f
--- /dev/null
+++ b/templates/main.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Redzuzu's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link rel="stylesheet" type="text/css" href="{{ url_for('static',filename='css/main.css') }}" />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link rel="icon" href="{{ url_for('static',filename='img/favicon.ico') }}" />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body>
+    <div class="content">
+      <h1 class="text-pop-up-top">Ethan Pisani.</h1>
+      <a href="/chem12cpt/">Chemistry 12 CPT</a>
+
+    </div>
+
+
+
+
+  </body>
+</html>
diff --git a/templates/model.html b/templates/model.html
new file mode 100644
index 0000000..b10ce5a
--- /dev/null
+++ b/templates/model.html
@@ -0,0 +1,99 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>{{model}} Model</title>
+    <style>
+      body {
+        margin: 0;
+      }
+      canvas{
+        display: block;
+          width: 100%;
+          height: 100%;
+      }
+    </style>
+  </head>
+  <body>
+    
+    <script type="module">
+import * as THREE from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/build/three.module.js';
+import {OrbitControls} from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/examples/jsm/controls/OrbitControls.js';
+import {GLTFLoader} from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/examples/jsm/loaders/GLTFLoader.js';
+let camera, scene, renderer;
+
+init();
+render();
+
+function init() {
+
+    const container = document.createElement( 'div' );
+    document.body.appendChild( container );
+
+    camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
+    //camera.position.set( - 1.8, 0.6, 2.7 );
+
+    scene = new THREE.Scene();
+
+            const loader = new GLTFLoader().setPath('../../static/models/organic/' );
+            var obj;
+            //loader.load( 'propan-2-ol.glb', function ( gltf ) {
+                loader.load( '{{model}}.glb', function ( gltf ) {
+                //loader.load( 'Box.gltf', function ( gltf ) {
+                obj = gltf.scene;
+                scene.add( gltf.scene );
+
+
+                render();
+
+            } );
+            var light = new THREE.HemisphereLight(0xffffff, 0x000000, 1.5)
+            scene.add(light);
+            camera.position.set(0, 0, 10)
+            scene.background = new THREE.Color(0x2c2c2c)
+            //Object.rotation.y += 0.01;
+    renderer = new THREE.WebGLRenderer( { antialias: true } );
+    renderer.setPixelRatio( window.devicePixelRatio );
+    renderer.setSize( window.innerWidth, window.innerHeight );
+    container.appendChild( renderer.domElement );
+    window.addEventListener( 'resize', onWindowResize );
+
+    function animate(){
+      requestAnimationFrame(animate);
+      obj.rotation.y +=0.01;
+      obj.rotation.x +=0.01;
+      obj.rotation.z +=0.01;
+      render();
+    }
+animate();
+
+
+    
+    
+}
+
+function onWindowResize() {
+
+    camera.aspect = window.innerWidth / window.innerHeight;
+    camera.updateProjectionMatrix();
+
+    renderer.setSize( window.innerWidth, window.innerHeight );
+
+    render();
+
+}
+
+//
+
+function render() {
+
+    renderer.render( scene, camera );
+
+}
+
+
+
+    </script>
+
+  </body>
+</html>
\ No newline at end of file
diff --git a/templates/unit1.html b/templates/unit1.html
new file mode 100644
index 0000000..f749195
--- /dev/null
+++ b/templates/unit1.html
@@ -0,0 +1,270 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Ethan's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/chem12cpt.css') }}"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/unit1.css') }}"
+    />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link
+      rel="icon"
+      href="{{ url_for('static',filename='img/favicon.ico') }}"
+    />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body>
+    <div class="content">
+      <h1>Chemistry 12 CPT</h1>
+
+      <a href="../" class="button">Go Back</a>
+      <br />
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Alkane:</p>
+          <p>Any hydrocarbon with only single bonds</p>
+          <p>Example: <a href="../../3d/butane">butane</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/pent-2-ene"
+            title="butane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Alkene:</p>
+          <p>Any hydrocarbon with double bonds</p>
+          <p>Example: <a href="../../3d/pent-2-ene">pent-2-ene</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/pent-2-ene"
+            title="butane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Alkyne:</p>
+          <p>Any hydrocarbon with triple bonds</p>
+          <p>Example: <a href="../../3d/hex-3-yne">hex-3-yne</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/hex-3-yne"
+            title="butane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Aromatic:</p>
+          <p>
+            Any hydrocarbon that contains benzene or benzene like properties
+          </p>
+          <p>Example: <a href="../../3d/benzene">benzene</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/benzene"
+            title="benzene"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Alcohol:</p>
+          <p>A hydrocarbon with a main hydroxyl (OH) branch</p>
+          <p>Example: <a href="../../3d/propan-2-ol">propan-2-ol</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/propan-2-ol"
+            title="propan-2-ol"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Aldehyde:</p>
+          <p>
+            A hydrocarbon with double bonded oxygen (=O), single bonded hydrogen
+            (H)
+          </p>
+          <p>Example: <a href="../../3d/ethanal">ethanal</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/ethanal"
+            title="ethanal"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Ether:</p>
+          <p>A hydrocarbon with an oxygen (O) between two alkyl groups</p>
+          <p>
+            Example: <a href="../../3d/1-methoxypropane">1-methoxypropane</a>
+          </p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/1-methoxypropane"
+            title="1-methoxypropane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Carboxylic acid:</p>
+          <p>
+            A hydrocarbon with a carboxyl group (C(=O)OH) attached to an alkyl
+            groups
+          </p>
+          <p>Example: <a href="../../3d/ethanoic_acid">ethanoic acid</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/ethanoic_acid"
+            title="ethanoic_acid"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Ketone:</p>
+          <p>
+            A hydrocarbon with a double bonded oxygen (C=O) attached to two
+            alkyl groups
+          </p>
+          <p>Example: <a href="../../3d/pentan-2-one">pentan-2-one</a></p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/pentan-2-one"
+            title="pentan-2-one"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Ester:</p>
+          <p>
+            A hydrocarbon with a double bonded oxygen and a single bonded oxygen
+            (O-C=O) attached to two alkyl groups
+          </p>
+          <p>
+            Example: <a href="../../3d/propyl_ethanoate">propyl ethanoate</a>
+          </p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/propyl_ethanoate"
+            title="propyl_ethanoate"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Amine:</p>
+          <p>
+            A hydrocarbon with a bonded nitrogen (N) attached to 1 to 3 alkyl
+            groups
+          </p>
+          <p>
+            Example:
+            <a href="../../3d/n-methylbutan-2-amine">n-methylbutan-2-amine</a>
+          </p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/n-methylbutan-2-amine"
+            title="n-methylbutan-2-amine"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Aminde:</p>
+          <p>
+            A hydrocarbon with a bonded nitrogen with a double bonded oxygen
+            (N-C=O) attached to 1 to 3 alkyl groups
+          </p>
+          <p>
+            Example:
+            <a href="../../3d/n_n-dimethylpropanamide"
+              >n,n-dimethylpropanamide</a
+            >
+          </p>
+        </div>
+        <div class="second">
+          <iframe
+            loading="lazy"
+            src="../../3d/n_n-dimethylpropanamide"
+            title="n_n-dimethylpropanamide"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+    </div>
+  </body>
+  <script>
+    function checkf() {
+      var checkb = document.getElementById("checkbox");
+      if (checkb.checked == true) {
+        console.log("checked");
+        var list = document.getElementsByClassName("t");
+        console.log(list);
+        for (var i = 0; i < list.length; i++) {
+          var e = list[i];
+          e.className = "hide";
+        }
+      }
+    }
+  </script>
+</html>
diff --git a/templates/unit1copyimg.html b/templates/unit1copyimg.html
new file mode 100644
index 0000000..8600e48
--- /dev/null
+++ b/templates/unit1copyimg.html
@@ -0,0 +1,370 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Ethan's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/chem12cpt.css') }}"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/unit1.css') }}"
+    />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link
+      rel="icon"
+      href="{{ url_for('static',filename='img/favicon.ico') }}"
+    />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body>
+    <div class="content">
+      <h1>Chemistry 12 CPT</h1>
+
+      <div class="container">
+        <label class="switch"
+          ><input type="checkbox" id="checkbox" onchange="checkf()" />
+          <div></div> </label
+        >3d models
+      </div>
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Alkane:</p>
+          <p>Any hydrocarbon with only single bonds</p>
+          <p>Example: <a href="../../3d/butane">butane</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="1"
+            src="../../static/img/butane.png"
+            alt="butane"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/pent-2-ene"
+            title="butane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Alkene:</p>
+          <p>Any hydrocarbon with double bonds</p>
+          <p>Example: <a href="../../3d/pent-2-ene">pent-2-ene</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="2"
+            src="../../static/img/pent-2-ene.png"
+            alt="pent-2-ene"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/pent-2-ene"
+            title="butane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Alkyne:</p>
+          <p>Any hydrocarbon with triple bonds</p>
+          <p>Example: <a href="../../3d/hex-3-yne">hex-3-yne</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/hex-3-yne.png"
+            alt="hex-3-yne"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/hex-3-yne"
+            title="butane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+      <div class="wrapper">
+        <div class="first">
+          <p>Aromatic:</p>
+          <p>
+            Any hydrocarbon that contains benzene or benzene like properties
+          </p>
+          <p>Example: <a href="../../3d/benzene">benzene</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/benzene.png"
+            alt="benzene"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/benzene"
+            title="benzene"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Alcohol:</p>
+          <p>A hydrocarbon with a main hydroxyl (OH) branch</p>
+          <p>Example: <a href="../../3d/propan-2-ol">propan-2-ol</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/propan-2-ol.png"
+            alt="propan-2-ol"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/propan-2-ol"
+            title="propan-2-ol"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Aldehyde:</p>
+          <p>
+            A hydrocarbon with double bonded oxygen (=O), single bonded hydrogen
+            (H)
+          </p>
+          <p>Example: <a href="../../3d/ethanal">ethanal</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/ethanal.png"
+            alt="ethanal"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/ethanal"
+            title="ethanal"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Ether:</p>
+          <p>A hydrocarbon with an oxygen (O) between two alkyl groups</p>
+          <p>
+            Example: <a href="../../3d/1-methoxypropane">1-methoxypropane</a>
+          </p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/1-methoxypropane.png"
+            alt="1-methoxypropane"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/1-methoxypropane"
+            title="1-methoxypropane"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Carboxylic acid:</p>
+          <p>
+            A hydrocarbon with a carboxyl group (C(=O)OH) attached to an alkyl
+            groups
+          </p>
+          <p>Example: <a href="../../3d/ethanoic_acid">ethanoic acid</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/ethanoic_acid.png"
+            alt="ethanoic_acid"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/ethanoic_acid"
+            title="ethanoic_acid"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Ketone:</p>
+          <p>
+            A hydrocarbon with a double bonded oxygen (C=O) attached to two
+            alkyl groups
+          </p>
+          <p>Example: <a href="../../3d/pentan-2-one">pentan-2-one</a></p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/pentan-2-one.png"
+            alt="pentan-2-one"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/pentan-2-one"
+            title="pentan-2-one"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Ester:</p>
+          <p>
+            A hydrocarbon with a double bonded oxygen and a single bonded oxygen
+            (O-C=O) attached to two alkyl groups
+          </p>
+          <p>
+            Example: <a href="../../3d/propyl_ethanoate">propyl ethanoate</a>
+          </p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/propyl_ethanoate.png"
+            alt="propyl_ethanoate"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/propyl_ethanoate"
+            title="propyl_ethanoate"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Amine:</p>
+          <p>
+            A hydrocarbon with a bonded nitrogen (N) attached to 1 to 3 alkyl
+            groups
+          </p>
+          <p>
+            Example:
+            <a href="../../3d/n-methylbutan-2-amine">n-methylbutan-2-amine</a>
+          </p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/n-methylbutan-2-amine.png"
+            alt="n-methylbutan-2-amine"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/n-methylbutan-2-amine"
+            title="n-methylbutan-2-amine"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+
+      <div class="wrapper">
+        <div class="first">
+          <p>Aminde:</p>
+          <p>
+            A hydrocarbon with a bonded nitrogen  with a double bonded oxygen
+            (N-C=O) attached to 1 to 3 alkyl groups
+          </p>
+          <p>
+            Example:
+            <a href="../../3d/n_n-dimethylpropanamide"
+              >n,n-dimethylpropanamide</a
+            >
+          </p>
+        </div>
+        <div class="second">
+          <img
+            class="t"
+            id="im"
+            src="../../static/img/n_n-dimethylpropanamide.png"
+            alt="n_n-dimethylpropanamide"
+          />
+          <iframe
+            class="hide"
+            id="if"
+            loading="lazy"
+            src="../../3d/n_n-dimethylpropanamide"
+            title="n_n-dimethylpropanamide"
+          ></iframe>
+        </div>
+      </div>
+      <br />
+    </div>
+  </body>
+  <script>
+    function checkf() {
+      var checkb = document.getElementById("checkbox");
+      if (checkb.checked == true) {
+        console.log("checked");
+        var list = document.getElementsByClassName("t");
+        console.log(list);
+        for (var i = 0; i < list.length; i++) {
+          var e = list[i];
+          e.className = "hide";
+        }
+      }
+    }
+  </script>
+</html>
diff --git a/templates/unit2.html b/templates/unit2.html
new file mode 100644
index 0000000..3dc9eb0
--- /dev/null
+++ b/templates/unit2.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Ethan's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link rel="stylesheet" type="text/css" href="{{ url_for('static',filename='css/chem12cpt.css') }}" />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link rel="icon" href="/img/favicon.ico" />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body>
+</body>
+</html>
\ No newline at end of file
diff --git a/templates/unit3.html b/templates/unit3.html
new file mode 100644
index 0000000..e435452
--- /dev/null
+++ b/templates/unit3.html
@@ -0,0 +1,218 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Ethan's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/chem12cpt.css') }}"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/unit3.css') }}"
+    />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link
+      rel="icon"
+      href="{{ url_for('static',filename='img/favicon.ico') }}"
+    />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body>
+    <div class="content">
+      <div class="quest">
+        <h1 class="title ">Unit 3 Quiz</h1>
+        <form method="POST" action="">
+
+          <div class="q1">
+            <h4>Q.1</h4>
+            <p>
+              300g of an unkown metal at 400°C is dropped into 500mL of water at
+              21.5°C. The water is heated up to 74.6°C, what is the heat
+              capacity of the metal?
+            </p>
+            <table class="hct">
+              <tr>
+                <th>Substance</th>
+                <th>Heat Capacity</th>
+              </tr>
+              <tr>
+                <td>Iron</td>
+                <td>0.440</td>
+              </tr>
+              <tr>
+                <td>Lithium</td>
+                <td>3.56</td>
+              </tr>
+              <tr>
+                <td>Sodium</td>
+                <td>1.23</td>
+              </tr>
+              <tr>
+                <td>Aluminum</td>
+                <td>0.900</td>
+              </tr>
+              <tr>
+                <td>Potassium</td>
+                <td>0.75</td>
+              </tr>
+              <tr>
+                <td>Lead</td>
+                <td>0.160</td>
+              </tr>
+              <tr>
+                <td>Gold</td>
+                <td>0.1290</td>
+              </tr>
+            </table>
+            <hr />
+            <p>1.1: Please put answers with 4 sig digs (No UNITS)</p>
+            <input name="in1.1" type="text" placeholder="Ex. 0.8000" />
+            {% if testa %}
+            {{testa['in1.1']|safe}}
+            {% endif%}
+            <hr />
+            <p>1.2: Based on the chart, what metal is it likely to be (Just the metal)?</p>
+            <input name="in1.2" type="text" placeholder="Ex. Copper" />
+            {% if testa %}
+            {{testa['in1.2']|safe}}
+            {% endif%}
+                
+          </div>
+          <div class="q2">
+            <h4>Q.2</h4>
+            <p>Hexane combusts completely with oxygen gas.</p>
+            <p>2.1: What is the balanced equation (NO fractions)?</p>
+            <p class="hide">
+              <input
+                class="baleq"
+                name="in2.1.1"
+                type="text"
+                placeholder="Ex. 5H2"
+              />+<input
+                class="baleq"
+                name="in2.1.2"
+                type="text"
+                placeholder="Ex. 5H2"
+              />--><input
+                class="baleq"
+                name="in2.1.3"
+                type="text"
+                placeholder="Ex. 5H2"
+              />+<input
+                class="baleq"
+                name="in2.1.4"
+                type="text"
+                placeholder="Ex. 5H2"
+              />
+            </p>
+            {% if testa %}
+            {{testa['in2.1']|safe}}
+            {% endif%}
+            <hr />
+            <p>2.2: What is the enthalpy change (include +/-)(No UNITS)(4 sig digs)?</p>
+            <table class="hct">
+              <tr>
+                <th>Substance</th>
+                <th>ΔH<sub>f</sub> (kJ/mol)</th>
+              </tr>
+              <tr>
+                <td>C<sub>6</sub>H<sub>14</sub></td>
+                <td>-198.67</td>
+              </tr>
+              <tr>
+                <td>O<sub>2</sub></td>
+                <td>0</td>
+              </tr>
+              <tr>
+                <td>CO<sub>2</sub></td>
+                <td>−393.5</td>
+              </tr>
+              <tr>
+                <td>H<sub>2</sub>O</td>
+                <td>-285.8</td>
+              </tr>
+            </table>
+            <br />
+            <input name="in2.2" type="text" placeholder="Ex. +800" />
+            {% if testa %}
+            {{testa['in2.2']|safe}}
+            {% endif%}
+            <hr />
+
+            <p>
+              2.3: What is the molar enthalpy change of the hexane (include
+              +/-)(No UNITS)(4 sig digs)?
+            </p>
+
+            <input name="in2.3" type="text" placeholder="Ex. +800" />
+            {% if testa %}
+            {{testa['in2.3']|safe}}
+            {% endif%}
+
+          </div>
+          <div class="q3">
+            <h4>Q.3</h4>
+            <p>3.1: What is the ΔS of this reaction?</p>
+            <p>
+              2Li<sub>(s)</sub> + 2H<sub>2</sub>O<sub>(l)</sub> = 2LiOH<sub
+                >(aq)</sub
+              >
+              + H<sub>2(g)</sub>
+            </p>
+            <table class="hct">
+              <tr>
+                <th>Chemical</th>
+                <th>ΔS (J/mol*K)</th>
+              </tr>
+              <tr>
+                <td>LiOH</td>
+                <td>47.97</td>
+              </tr>
+              <tr>
+                <td>Li</td>
+                <td>29.09</td>
+              </tr>
+              <tr>
+                <td>H<sub>2</sub></td>
+                <td>130.6</td>
+              </tr>
+              <tr>
+                <td>H<sub>2</sub>O</td>
+                <td>69.95</td>
+              </tr>
+            </table>
+            <br />
+
+            <p>Put answers in 4 sig digs</p>
+            <input name="in3.1" type="text" placeholder="Ex. 800" />
+            {% if testa %}
+            {{testa['in3.1']|safe}}
+            {% endif%}
+            
+
+
+            <p>3.2: Is this reaction spontaneous based on entropy alone?</p>
+
+            <input name="in3.2" type="text" placeholder="Ex. Yes/No" />
+            {% if testa %}
+            {{testa['in3.2']|safe}}
+            {% endif%}
+
+          </div>
+          <input class="subbut" value="submit" type="submit" />
+        </form>
+      </div>
+      <a href="../" class="button">Go Back</a>
+    </div>
+    
+    
+      {{style|safe}}
+  </body>
+</html>
diff --git a/templates/unit4.html b/templates/unit4.html
new file mode 100644
index 0000000..375e897
--- /dev/null
+++ b/templates/unit4.html
@@ -0,0 +1,225 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Ethan's Site</title>
+    <link
+      href="https://fonts.googleapis.com/css?family=Roboto&display=swap"
+      rel="stylesheet"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/chem12cpt.css') }}"
+    />
+    <link
+      rel="stylesheet"
+      type="text/css"
+      href="{{ url_for('static',filename='css/unit4.css') }}"
+    />
+    <meta name="msapplication-TileColor" content="#000000" />
+    <meta name="theme-color" content="#000000" />
+    <link
+      rel="icon"
+      href="{{ url_for('static',filename='img/favicon.ico') }}"
+    />
+    <meta name="robots" content="index,follow" />
+  </head>
+  <body>
+    <div class="content">
+      <h1>Unit 4 Approxmation Rule Walkthrough</h1>
+      <div class="walk">
+        <p class="quest">
+          Initially 4.00 mol of carbon monoxide and 3.00 mol of bromine gas are
+          placed into a  2.5 L container, what is the concentration of the
+          reactants and Carbonyl bromide at equilibrium?
+        </p>
+        <p class="quest" id="inputText">K<sub>eq</sub> = 4.5x10<sup>-5</sup></p>
+        <br />
+        <button><a href="">Reset</a></button>
+        <button class="prevb" onclick="prev()">Previous</button>
+        <button class="nextb" onclick="next()">Next</button>
+        <button onclick="showall()">Show All</button>
+        <br />
+        <br />
+        <div class="answer">
+          <div class="wrapper">
+            <div class="first">
+              <p id="q1" class="hl2">1. Find chemical equation</p>
+              <p id="q2" class="hide">2. Balance chemical equation</p>
+              <p id="q3" class="hide">3. Make ICE table</p>
+              <p id="q4" class="hide">4. Fill in ICE table</p>
+              <p id="q5" class="hide">
+                5. Is this question an approximation rule (more than 1000x
+                difference)?
+              </p>
+              <p id="q6" class="hide">
+                6. Write keq equation with products and reactants
+              </p>
+              <p id="q7" class="hide">
+                7. Cross out x for reactants because we can assume that the
+                initial concentration of the reactants will be very similar to
+                the concentration at equilibrium
+              </p>
+              <p id="q8" class="hide">8. Solve for x</p>
+              <p id="q9" class="hide">
+                9. Use x to solve for each chemical’s equilibrium concentration
+              </p>
+            </div>
+            <div class="second">
+              <p id="w1" class="hl">
+                CO<sub>(g)</sub> + Br<sub>2(g)</sub> ⇌ COBr<sub>2(g)</sub>
+              </p>
+              <p id="w2" class="hide">
+                1CO<sub>(g)</sub> + 1Br<sub>2(g)</sub> ⇌ 1COBr<sub>2(g)</sub>
+              </p>
+              <div id="w3" class="hide">
+                <table class="ice">
+                  <tr>
+                    <td></td>
+                    <td>CO(g)</td>
+                    <td>Br2(g)</td>
+                    <td>COBr2(g)</td>
+                  </tr>
+                  <tr>
+                    <td>I</td>
+                    <td></td>
+                    <td></td>
+                    <td></td>
+                  </tr>
+                  <tr>
+                    <td>C</td>
+                    <td></td>
+                    <td></td>
+                    <td></td>
+                  </tr>
+                  <tr>
+                    <td>E</td>
+                    <td></td>
+                    <td></td>
+                    <td></td>
+                  </tr>
+                </table>
+              </div>
+              <div id="w4" class="hide">
+                <table class="ice">
+                  <tr>
+                    <td></td>
+                    <td>CO(g)</td>
+                    <td>Br2(g)</td>
+                    <td>COBr2(g)</td>
+                  </tr>
+                  <tr>
+                    <td>I</td>
+                    <td>1.60 mol/L</td>
+                    <td>1.20 mol/L</td>
+                    <td>0</td>
+                  </tr>
+                  <tr>
+                    <td>C</td>
+                    <td>-x</td>
+                    <td>-x</td>
+                    <td>+x</td>
+                  </tr>
+                  <tr>
+                    <td>E</td>
+                    <td>1.60 -x</td>
+                    <td>1.20 -x</td>
+                    <td>x</td>
+                  </tr>
+                </table>
+              </div>
+              <p id="w5" class="hide">
+                1.6 / 4.5x10<sup>-5</sup> = 35555.555... ∴ Yes it is more than
+                1000x difference
+              </p>
+              <div id="w6" class="hide">
+                <p>K<sub>eq</sub> = [Products] / [Reactants]</p>
+                <p>
+                  K<sub>eq</sub> = [COBr<sub>2(g)</sub>]<sup>1</sup> /
+                  [CO<sub>(g)</sub>]<sup>1</sup>[Br<sub>2(g)</sub>]<sup>1</sup>
+                </p>
+              </div>
+
+              <p id="w7" class="hide">
+                4.5x10<sup>-5</sup> = [x]<sup>1</sup> / [1.60
+                -x]<sup>1</sup>[1.20 -x]<sup>1</sup>
+              </p>
+              <div id="w8" class="hide">
+                <p>4.5x10<sup>-5</sup> = x / (1.60)(1.20)</p>
+                <p>4.5x10<sup>-5</sup> = x / 1.92</p>
+                <p>(4.5x10<sup>-5</sup>)(1.92) = x</p>
+                <p>x = 8.64x10<sup>-5</sup></p>
+              </div>
+
+              <div id="w9" class="hide">
+                <div class="wrapper">
+                  <div class="first">
+                    <p>[COBr<sub>2(g)</sub>] = x</p>
+                    <p>[COBr<sub>2(g)</sub>] = 8.64x10<sup>-5</sup> mol/L</p>
+                    <p>[Br<sub>2(g)</sub> ] = 1.20 - x</p>
+                    <p>[Br<sub>2(g)</sub> ] = 1.20 -8.64x10<sup>-5</sup></p>
+                    <p>[Br<sub>2(g)</sub> ] = 1.19991 mol/L</p>
+                    <p>[Br<sub>2(g)</sub> ] = 1.20 mol/L</p>
+                  </div>
+                  <div class="second">
+                    <p>[CO<sub>(g)</sub> ] = 1.60 - x</p>
+                    <p>[CO<sub>(g)</sub> ] = 1.60 -8.64x10<sup>-5</sup></p>
+                    <p>[CO<sub>(g)</sub> ] = 1.59991 mol/L</p>
+                    <p>[CO<sub>(g)</sub> ] = 1.60 mol/L</p>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      <p><a href="../" class="button">Go Back</a></p>
+    </div>
+  </body>
+  <script>
+    let walkan = ["w1", "w2", "w3", "w4", "w5", "w6", "w7", "w8", "w9"];
+    let walkan2 = ["q1", "q2", "q3", "q4", "q5", "q6", "q7", "q8", "q9"];
+    function highlight(text) {
+      var inputText = document.getElementById("inputText");
+      var innerHTML = inputText.innerHTML;
+      var index = innerHTML.indexOf(text);
+      if (index >= 0) {
+        innerHTML =
+          innerHTML.substring(0, index) +
+          "<span class='highlight'>" +
+          innerHTML.substring(index, index + text.length) +
+          "</span>" +
+          innerHTML.substring(index + text.length);
+        inputText.innerHTML = innerHTML;
+      }
+    }
+    function next() {
+      var x = document.querySelector(".hl");
+      let pos = walkan.indexOf(x.id);
+      if (pos != 8) {
+        document.getElementById(walkan[pos]).className = "";
+        document.getElementById(walkan[pos + 1]).className = "hl";
+        document.getElementById(walkan2[pos]).className = "";
+        document.getElementById(walkan2[pos + 1]).className = "hl2";
+      }
+    }
+    function prev() {
+      var x = document.querySelector(".hl");
+      let pos = walkan.indexOf(x.id);
+      if (pos != 0) {
+        document.getElementById(walkan[pos]).className = "hide";
+        document.getElementById(walkan[pos - 1]).className = "hl";
+        document.getElementById(walkan2[pos]).className = "hide";
+        document.getElementById(walkan2[pos - 1]).className = "hl2";
+      }
+    }
+    function showall() {
+      var arrayLength = walkan.length;
+      for (var i = 0; i < arrayLength; i++) {
+        document.getElementById(walkan[i]).className = "t";
+        document.getElementById(walkan2[i]).className = "t";
+      }
+    }
+  </script>
+</html>
diff --git a/threejs-test/example.js b/threejs-test/example.js
new file mode 100644
index 0000000..ff980db
--- /dev/null
+++ b/threejs-test/example.js
@@ -0,0 +1,18 @@
+import * as THREE from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/build/three.module.js';
+import {OrbitControls} from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/examples/jsm/controls/OrbitControls.js';
+import {GLTFLoader} from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/examples/jsm/loaders/GLTFLoader.js';
+const loader = new GLTFLoader();
+const scene = new THREE.Scene();
+//scene.background = new THREE.Color('black');
+// Load a glTF resource
+
+
+
+
+const gltfLoader = new GLTFLoader();
+    gltfLoader.load('../models/organic/propan-2-ol.gltf', (gltf) => {
+      const root = gltf.scene;
+      scene.add(root);
+      gltf.asset;
+      render();
+    });
\ No newline at end of file
diff --git a/threejs-test/help.js b/threejs-test/help.js
new file mode 100644
index 0000000..366f83e
--- /dev/null
+++ b/threejs-test/help.js
@@ -0,0 +1,74 @@
+import * as THREE from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/build/three.module.js';
+import {OrbitControls} from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/examples/jsm/controls/OrbitControls.js';
+import {GLTFLoader} from 'https://threejsfundamentals.org/threejs/resources/threejs/r125/examples/jsm/loaders/GLTFLoader.js';
+let camera, scene, renderer;
+
+init();
+render();
+
+function init() {
+
+    const container = document.createElement( 'div' );
+    document.body.appendChild( container );
+
+    camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.25, 20 );
+    //camera.position.set( - 1.8, 0.6, 2.7 );
+
+    scene = new THREE.Scene();
+
+            const loader = new GLTFLoader().setPath('../models/organic/' );
+            var obj;
+            //loader.load( 'propan-2-ol.glb', function ( gltf ) {
+                loader.load( 'testmolctrlj.glb', function ( gltf ) {
+                //loader.load( 'Box.gltf', function ( gltf ) {
+                obj = gltf.scene;
+                scene.add( gltf.scene );
+
+
+                render();
+
+            } );
+            var light = new THREE.HemisphereLight(0xffffff, 0x000000, 1.5)
+            scene.add(light);
+            camera.position.set(0, 0, 10)
+            scene.background = new THREE.Color(0x2c2c2c)
+            //Object.rotation.y += 0.01;
+    renderer = new THREE.WebGLRenderer( { antialias: true } );
+    renderer.setPixelRatio( window.devicePixelRatio );
+    renderer.setSize( window.innerWidth, window.innerHeight );
+    container.appendChild( renderer.domElement );
+    window.addEventListener( 'resize', onWindowResize );
+
+    function animate(){
+        requestAnimationFrame(animate);
+        obj.rotation.y += 0.005;
+        obj.rotation.z += 0.005;
+        obj.rotation.x += 0.005;
+        renderer.render(scene, camera)
+    }
+    animate();
+
+    
+
+}
+
+
+
+function onWindowResize() {
+
+    camera.aspect = window.innerWidth / window.innerHeight;
+    camera.updateProjectionMatrix();
+
+    renderer.setSize( window.innerWidth, window.innerHeight );
+
+    render();
+
+}
+
+//
+
+function render() {
+
+    renderer.render( scene, camera );
+
+}
diff --git a/threejs-test/index.html b/threejs-test/index.html
new file mode 100644
index 0000000..3791273
--- /dev/null
+++ b/threejs-test/index.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <title>My first three.js app</title>
+    <style>
+      body {
+        margin: 0;
+      }
+      canvas{
+        display: block;
+          width: 100%;
+          height: 100%;
+      }
+    </style>
+  </head>
+  <body>
+    
+    <script type="module" src="./help.js"></script>
+
+  </body>
+</html>
diff --git a/threejs-test/main.js b/threejs-test/main.js
new file mode 100644
index 0000000..3e7b803
--- /dev/null
+++ b/threejs-test/main.js
@@ -0,0 +1,40 @@
+const scene = new THREE.Scene();
+
+const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
+
+const render = new THREE.WebGLRenderer();
+
+render.setSize(window.innerWidth, window.innerHeight);
+
+document.body
+
+
+//
+loader.load(
+	// resource URL
+	'../models/organic/propan-2-ol.gltf',
+	// called when the resource is loaded
+	function ( gltf ) {
+
+		scene.add( gltf.scene );
+
+		gltf.animations; // Array<THREE.AnimationClip>
+		gltf.scene; // THREE.Group
+		gltf.scenes; // Array<THREE.Group>
+		gltf.cameras; // Array<THREE.Camera>
+		gltf.asset; // Object
+
+	},
+	// called while loading is progressing
+	function ( xhr ) {
+
+		console.log( ( xhr.loaded / xhr.total * 100 ) + '% loaded' );
+
+	},
+	// called when loading has errors
+	function ( error ) {
+        console.log(error)
+		console.log( 'An error happened' );
+
+	}
+);
\ No newline at end of file