text: /**
   * Tween.js - Licensed under the MIT license
   * https://github.com/tweenjs/tween.js
   * ----------------------------------------------
   *
   * See https://github.com/tweenjs/tween.js/graphs/contributors for the full list of contributors.
   * Thank you all, you're awesome!
   */
  
  
  var _Group = function () {
  	this._tweens = {};
  	this._tweensAddedDuringUpdate = {};
  };
  
  _Group.prototype = {
  	getAll: function () {
  
  		return Object.keys(this._tweens).map(function (tweenId) {
  			return this._tweens[tweenId];
  		}.bind(this));
  
  	},
  
  	removeAll: function () {
  
  		this._tweens = {};
  
  	},
  
  	add: function (tween) {
  
  		this._tweens[tween.getId()] = tween;
  		this._tweensAddedDuringUpdate[tween.getId()] = tween;
  
  	},
  
  	remove: function (tween) {
  
  		delete this._tweens[tween.getId()];
  		delete this._tweensAddedDuringUpdate[tween.getId()];
  
  	},
  
  	update: function (time, preserve) {
  
  		var tweenIds = Object.keys(this._tweens);
  
  		if (tweenIds.length === 0) {
  			return false;
  		}
  
  		time = time !== undefined ? time : TWEEN.now();
  
  		// Tweens are updated in "batches". If you add a new tween during an update, then the
  		// new tween will be updated in the next batch.
  		// If you remove a tween during an update, it may or may not be updated. However,
  		// if the removed tween was added during the current batch, then it will not be updated.
  		while (tweenIds.length > 0) {
  			this._tweensAddedDuringUpdate = {};
  
  			for (var i = 0; i < tweenIds.length; i++) {
  
  				var tween = this._tweens[tweenIds[i]];
  
  				if (tween && tween.update(time) === false) {
  					tween._isPlaying = false;
  
  					if (!preserve) {
  						delete this._tweens[tweenIds[i]];
  					}
  				}
  			}
  
  			tweenIds = Object.keys(this._tweensAddedDuringUpdate);
  		}
  
  		return true;
  
  	}
  };
  
  var TWEEN = new _Group();
  
  TWEEN.Group = _Group;
  TWEEN._nextId = 0;
  TWEEN.nextId = function () {
  	return TWEEN._nextId++;
  };
  
  
  // Include a performance.now polyfill.
  // In node.js, use process.hrtime.
  if (typeof (self) === 'undefined' && typeof (process) !== 'undefined' && process.hrtime) {
  	TWEEN.now = function () {
  		var time = process.hrtime();
  
  		// Convert [seconds, nanoseconds] to milliseconds.
  		return time[0] * 1000 + time[1] / 1000000;
  	};
  }
  // In a browser, use self.performance.now if it is available.
  else if (typeof (self) !== 'undefined' &&
           self.performance !== undefined &&
  		 self.performance.now !== undefined) {
  	// This must be bound, because directly assigning this function
  	// leads to an invocation exception in Chrome.
  	TWEEN.now = self.performance.now.bind(self.performance);
  }
  // Use Date.now if it is available.
  else if (Date.now !== undefined) {
  	TWEEN.now = Date.now;
  }
  // Otherwise, use 'new Date().getTime()'.
  else {
  	TWEEN.now = function () {
  		return new Date().getTime();
  	};
  }
  
  
  TWEEN.Tween = function (object, group) {
  	this._object = object;
  	this._valuesStart = {};
  	this._valuesEnd = {};
  	this._valuesStartRepeat = {};
  	this._duration = 1000;
  	this._repeat = 0;
  	this._repeatDelayTime = undefined;
  	this._yoyo = false;
  	this._isPlaying = false;
  	this._reversed = false;
  	this._delayTime = 0;
  	this._startTime = null;
  	this._easingFunction = TWEEN.Easing.Linear.None;
  	this._interpolationFunction = TWEEN.Interpolation.Linear;
  	this._chainedTweens = [];
  	this._onStartCallback = null;
  	this._onStartCallbackFired = false;
  	this._onUpdateCallback = null;
  	this._onCompleteCallback = null;
  	this._onStopCallback = null;
  	this._group = group || TWEEN;
  	this._id = TWEEN.nextId();
  
  };
  
  TWEEN.Tween.prototype = {
  	getId: function () {
  		return this._id;
  	},
  
  	isPlaying: function () {
  		return this._isPlaying;
  	},
  
  	to: function (properties, duration) {
  
  		this._valuesEnd = Object.create(properties);
  
  		if (duration !== undefined) {
  			this._duration = duration;
  		}
  
  		return this;
  
  	},
  
  	duration: function duration(d) {
  		this._duration = d;
  		return this;
  	},
  
  	start: function (time) {
  
  		this._group.add(this);
  
  		this._isPlaying = true;
  
  		this._onStartCallbackFired = false;
  
  		this._startTime = time !== undefined ? typeof time === 'string' ? TWEEN.now() + parseFloat(time) : time : TWEEN.now();
  		this._startTime += this._delayTime;
  
  		for (var property in this._valuesEnd) {
  
  			// Check if an Array was provided as property value
  			if (this._valuesEnd[property] instanceof Array) {
  
  				if (this._valuesEnd[property].length === 0) {
  					continue;
  				}
  
  				// Create a local copy of the Array with the start value at the front
  				this._valuesEnd[property] = [this._object[property]].concat(this._valuesEnd[property]);
  
  			}
  
  			// If `to()` specifies a property that doesn't exist in the source object,
  			// we should not set that property in the object
  			if (this._object[property] === undefined) {
  				continue;
  			}
  
  			// Save the starting value.
  			this._valuesStart[property] = this._object[property];
  
  			if ((this._valuesStart[property] instanceof Array) === false) {
  				this._valuesStart[property] *= 1.0; // Ensures we're using numbers, not strings
  			}
  
  			this._valuesStartRepeat[property] = this._valuesStart[property] || 0;
  
  		}
  
  		return this;
  
  	},
  
  	stop: function () {
  
  		if (!this._isPlaying) {
  			return this;
  		}
  
  		this._group.remove(this);
  		this._isPlaying = false;
  
  		if (this._onStopCallback !== null) {
  			this._onStopCallback(this._object);
  		}
  
  		this.stopChainedTweens();
  		return this;
  
  	},
  
  	end: function () {
  
  		this.update(Infinity);
  		return this;
  
  	},
  
  	stopChainedTweens: function () {
  
  		for (var i = 0, numChainedTweens = this._chainedTweens.length; i < numChainedTweens; i++) {
  			this._chainedTweens[i].stop();
  		}
  
  	},
  
  	group: function (group) {
  		this._group = group;
  		return this;
  	},
  
  	delay: function (amount) {
  
  		this._delayTime = amount;
  		return this;
  
  	},
  
  	repeat: function (times) {
  
  		this._repeat = times;
  		return this;
  
  	},
  
  	repeatDelay: function (amount) {
  
  		this._repeatDelayTime = amount;
  		return this;
  
  	},
  
  	yoyo: function (yoyo) {
  
  		this._yoyo = yoyo;
  		return this;
  
  	},
  
  	easing: function (easingFunction) {
  
  		this._easingFunction = easingFunction;
  		return this;
  
  	},
  
  	interpolation: function (interpolationFunction) {
  
  		this._interpolationFunction = interpolationFunction;
  		return this;
  
  	},
  
  	chain: function () {
  
  		this._chainedTweens = arguments;
  		return this;
  
  	},
  
  	onStart: function (callback) {
  
  		this._onStartCallback = callback;
  		return this;
  
  	},
  
  	onUpdate: function (callback) {
  
  		this._onUpdateCallback = callback;
  		return this;
  
  	},
  
  	onComplete: function (callback) {
  
  		this._onCompleteCallback = callback;
  		return this;
  
  	},
  
  	onStop: function (callback) {
  
  		this._onStopCallback = callback;
  		return this;
  
  	},
  
  	update: function (time) {
  
  		var property;
  		var elapsed;
  		var value;
  
  		if (time < this._startTime) {
  			return true;
  		}
  
  		if (this._onStartCallbackFired === false) {
  
  			if (this._onStartCallback !== null) {
  				this._onStartCallback(this._object);
  			}
  
  			this._onStartCallbackFired = true;
  		}
  
  		elapsed = (time - this._startTime) / this._duration;
  		elapsed = (this._duration === 0 || elapsed > 1) ? 1 : elapsed;
  
  		value = this._easingFunction(elapsed);
  
  		for (property in this._valuesEnd) {
  
  			// Don't update properties that do not exist in the source object
  			if (this._valuesStart[property] === undefined) {
  				continue;
  			}
  
  			var start = this._valuesStart[property] || 0;
  			var end = this._valuesEnd[property];
  
  			if (end instanceof Array) {
  
  				this._object[property] = this._interpolationFunction(end, value);
  
  			} else {
  
  				// Parses relative end values with start as base (e.g.: +10, -3)
  				if (typeof (end) === 'string') {
  
  					if (end.charAt(0) === '+' || end.charAt(0) === '-') {
  						end = start + parseFloat(end);
  					} else {
  						end = parseFloat(end);
  					}
  				}
  
  				// Protect against non numeric properties.
  				if (typeof (end) === 'number') {
  					this._object[property] = start + (end - start) * value;
  				}
  
  			}
  
  		}
  
  		if (this._onUpdateCallback !== null) {
  			this._onUpdateCallback(this._object);
  		}
  
  		if (elapsed === 1) {
  
  			if (this._repeat > 0) {
  
  				if (isFinite(this._repeat)) {
  					this._repeat--;
  				}
  
  				// Reassign starting values, restart by making startTime = now
  				for (property in this._valuesStartRepeat) {
  
  					if (typeof (this._valuesEnd[property]) === 'string') {
  						this._valuesStartRepeat[property] = this._valuesStartRepeat[property] + parseFloat(this._valuesEnd[property]);
  					}
  
  					if (this._yoyo) {
  						var tmp = this._valuesStartRepeat[property];
  
  						this._valuesStartRepeat[property] = this._valuesEnd[property];
  						this._valuesEnd[property] = tmp;
  					}
  
  					this._valuesStart[property] = this._valuesStartRepeat[property];
  
  				}
  
  				if (this._yoyo) {
  					this._reversed = !this._reversed;
  				}
  
  				if (this._repeatDelayTime !== undefined) {
  					this._startTime = time + this._repeatDelayTime;
  				} else {
  					this._startTime = time + this._delayTime;
  				}
  
  				return true;
  
  			} else {
  
  				if (this._onCompleteCallback !== null) {
  
  					this._onCompleteCallback(this._object);
  				}
  
  				for (var i = 0, numChainedTweens = this._chainedTweens.length; i < numChainedTweens; i++) {
  					// Make the chained tweens start exactly at the time they should,
  					// even if the `update()` method was called way past the duration of the tween
  					this._chainedTweens[i].start(this._startTime + this._duration);
  				}
  
  				return false;
  
  			}
  
  		}
  
  		return true;
  
  	}
  };
  
  
  TWEEN.Easing = {
  
  	Linear: {
  
  		None: function (k) {
  
  			return k;
  
  		}
  
  	},
  
  	Quadratic: {
  
  		In: function (k) {
  
  			return k * k;
  
  		},
  
  		Out: function (k) {
  
  			return k * (2 - k);
  
  		},
  
  		InOut: function (k) {
  
  			if ((k *= 2) < 1) {
  				return 0.5 * k * k;
  			}
  
  			return - 0.5 * (--k * (k - 2) - 1);
  
  		}
  
  	},
  
  	Cubic: {
  
  		In: function (k) {
  
  			return k * k * k;
  
  		},
  
  		Out: function (k) {
  
  			return --k * k * k + 1;
  
  		},
  
  		InOut: function (k) {
  
  			if ((k *= 2) < 1) {
  				return 0.5 * k * k * k;
  			}
  
  			return 0.5 * ((k -= 2) * k * k + 2);
  
  		}
  
  	},
  
  	Quartic: {
  
  		In: function (k) {
  
  			return k * k * k * k;
  
  		},
  
  		Out: function (k) {
  
  			return 1 - (--k * k * k * k);
  
  		},
  
  		InOut: function (k) {
  
  			if ((k *= 2) < 1) {
  				return 0.5 * k * k * k * k;
  			}
  
  			return - 0.5 * ((k -= 2) * k * k * k - 2);
  
  		}
  
  	},
  
  	Quintic: {
  
  		In: function (k) {
  
  			return k * k * k * k * k;
  
  		},
  
  		Out: function (k) {
  
  			return --k * k * k * k * k + 1;
  
  		},
  
  		InOut: function (k) {
  
  			if ((k *= 2) < 1) {
  				return 0.5 * k * k * k * k * k;
  			}
  
  			return 0.5 * ((k -= 2) * k * k * k * k + 2);
  
  		}
  
  	},
  
  	Sinusoidal: {
  
  		In: function (k) {
  
  			return 1 - Math.cos(k * Math.PI / 2);
  
  		},
  
  		Out: function (k) {
  
  			return Math.sin(k * Math.PI / 2);
  
  		},
  
  		InOut: function (k) {
  
  			return 0.5 * (1 - Math.cos(Math.PI * k));
  
  		}
  
  	},
  
  	Exponential: {
  
  		In: function (k) {
  
  			return k === 0 ? 0 : Math.pow(1024, k - 1);
  
  		},
  
  		Out: function (k) {
  
  			return k === 1 ? 1 : 1 - Math.pow(2, - 10 * k);
  
  		},
  
  		InOut: function (k) {
  
  			if (k === 0) {
  				return 0;
  			}
  
  			if (k === 1) {
  				return 1;
  			}
  
  			if ((k *= 2) < 1) {
  				return 0.5 * Math.pow(1024, k - 1);
  			}
  
  			return 0.5 * (- Math.pow(2, - 10 * (k - 1)) + 2);
  
  		}
  
  	},
  
  	Circular: {
  
  		In: function (k) {
  
  			return 1 - Math.sqrt(1 - k * k);
  
  		},
  
  		Out: function (k) {
  
  			return Math.sqrt(1 - (--k * k));
  
  		},
  
  		InOut: function (k) {
  
  			if ((k *= 2) < 1) {
  				return - 0.5 * (Math.sqrt(1 - k * k) - 1);
  			}
  
  			return 0.5 * (Math.sqrt(1 - (k -= 2) * k) + 1);
  
  		}
  
  	},
  
  	Elastic: {
  
  		In: function (k) {
  
  			if (k === 0) {
  				return 0;
  			}
  
  			if (k === 1) {
  				return 1;
  			}
  
  			return -Math.pow(2, 10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI);
  
  		},
  
  		Out: function (k) {
  
  			if (k === 0) {
  				return 0;
  			}
  
  			if (k === 1) {
  				return 1;
  			}
  
  			return Math.pow(2, -10 * k) * Math.sin((k - 0.1) * 5 * Math.PI) + 1;
  
  		},
  
  		InOut: function (k) {
  
  			if (k === 0) {
  				return 0;
  			}
  
  			if (k === 1) {
  				return 1;
  			}
  
  			k *= 2;
  
  			if (k < 1) {
  				return -0.5 * Math.pow(2, 10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI);
  			}
  
  			return 0.5 * Math.pow(2, -10 * (k - 1)) * Math.sin((k - 1.1) * 5 * Math.PI) + 1;
  
  		}
  
  	},
  
  	Back: {
  
  		In: function (k) {
  
  			var s = 1.70158;
  
  			return k * k * ((s + 1) * k - s);
  
  		},
  
  		Out: function (k) {
  
  			var s = 1.70158;
  
  			return --k * k * ((s + 1) * k + s) + 1;
  
  		},
  
  		InOut: function (k) {
  
  			var s = 1.70158 * 1.525;
  
  			if ((k *= 2) < 1) {
  				return 0.5 * (k * k * ((s + 1) * k - s));
  			}
  
  			return 0.5 * ((k -= 2) * k * ((s + 1) * k + s) + 2);
  
  		}
  
  	},
  
  	Bounce: {
  
  		In: function (k) {
  
  			return 1 - TWEEN.Easing.Bounce.Out(1 - k);
  
  		},
  
  		Out: function (k) {
  
  			if (k < (1 / 2.75)) {
  				return 7.5625 * k * k;
  			} else if (k < (2 / 2.75)) {
  				return 7.5625 * (k -= (1.5 / 2.75)) * k + 0.75;
  			} else if (k < (2.5 / 2.75)) {
  				return 7.5625 * (k -= (2.25 / 2.75)) * k + 0.9375;
  			} else {
  				return 7.5625 * (k -= (2.625 / 2.75)) * k + 0.984375;
  			}
  
  		},
  
  		InOut: function (k) {
  
  			if (k < 0.5) {
  				return TWEEN.Easing.Bounce.In(k * 2) * 0.5;
  			}
  
  			return TWEEN.Easing.Bounce.Out(k * 2 - 1) * 0.5 + 0.5;
  
  		}
  
  	}
  
  };
  
  TWEEN.Interpolation = {
  
  	Linear: function (v, k) {
  
  		var m = v.length - 1;
  		var f = m * k;
  		var i = Math.floor(f);
  		var fn = TWEEN.Interpolation.Utils.Linear;
  
  		if (k < 0) {
  			return fn(v[0], v[1], f);
  		}
  
  		if (k > 1) {
  			return fn(v[m], v[m - 1], m - f);
  		}
  
  		return fn(v[i], v[i + 1 > m ? m : i + 1], f - i);
  
  	},
  
  	Bezier: function (v, k) {
  
  		var b = 0;
  		var n = v.length - 1;
  		var pw = Math.pow;
  		var bn = TWEEN.Interpolation.Utils.Bernstein;
  
  		for (var i = 0; i <= n; i++) {
  			b += pw(1 - k, n - i) * pw(k, i) * v[i] * bn(n, i);
  		}
  
  		return b;
  
  	},
  
  	CatmullRom: function (v, k) {
  
  		var m = v.length - 1;
  		var f = m * k;
  		var i = Math.floor(f);
  		var fn = TWEEN.Interpolation.Utils.CatmullRom;
  
  		if (v[0] === v[m]) {
  
  			if (k < 0) {
  				i = Math.floor(f = m * (1 + k));
  			}
  
  			return fn(v[(i - 1 + m) % m], v[i], v[(i + 1) % m], v[(i + 2) % m], f - i);
  
  		} else {
  
  			if (k < 0) {
  				return v[0] - (fn(v[0], v[0], v[1], v[1], -f) - v[0]);
  			}
  
  			if (k > 1) {
  				return v[m] - (fn(v[m], v[m], v[m - 1], v[m - 1], f - m) - v[m]);
  			}
  
  			return fn(v[i ? i - 1 : 0], v[i], v[m < i + 1 ? m : i + 1], v[m < i + 2 ? m : i + 2], f - i);
  
  		}
  
  	},
  
  	Utils: {
  
  		Linear: function (p0, p1, t) {
  
  			return (p1 - p0) * t + p0;
  
  		},
  
  		Bernstein: function (n, i) {
  
  			var fc = TWEEN.Interpolation.Utils.Factorial;
  
  			return fc(n) / fc(i) / fc(n - i);
  
  		},
  
  		Factorial: (function () {
  
  			var a = [1];
  
  			return function (n) {
  
  				var s = 1;
  
  				if (a[n]) {
  					return a[n];
  				}
  
  				for (var i = n; i > 1; i--) {
  					s *= i;
  				}
  
  				a[n] = s;
  				return s;
  
  			};
  
  		})(),
  
  		CatmullRom: function (p0, p1, p2, p3, t) {
  
  			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;
  
  		}
  
  	}
  
  };
  
  // UMD (Universal Module Definition)
  (function (root) {
  
  	if (typeof define === 'function' && define.amd) {
  
  		// AMD
  		define([], function () {
  			return TWEEN;
  		});
  
  	} else if (typeof module !== 'undefined' && typeof exports === 'object') {
  
  		// Node.js
  		module.exports = TWEEN;
  
  	} else if (root !== undefined) {
  
  		// Global variable
  		root.TWEEN = TWEEN;
  
  	}
  
  })(this);
  