box-drawing example

3 files changed, 1132 insertions, 0 deletions

diff --git a/assets/javascripts/vendor/loader.js b/assets/javascripts/vendor/loader.js
new file mode 100644
index 0000000..4c1c8cd
--- /dev/null
+++ b/assets/javascripts/vendor/loader.js
@@ -0,0 +1,68 @@
+var Loader = Loader || (function(){
+  function Loader (readyCallback){
+    this.assets = {};
+    this.images = [];
+    this.readyCallback = readyCallback;
+  }
+
+  // Register an asset as loading
+  Loader.prototype.register = function(s){
+    this.assets[s] = false;
+  }
+
+  // Signal that an asset has loaded
+  Loader.prototype.ready = function(s){
+    window.debug && console.log("ready >> " + s);
+
+    this.assets[s] = true;
+    if (this.loaded) return;
+    if (! this.isReady()) return;
+
+    this.loaded = true;
+    this.readyCallback && this.readyCallback();
+  }
+
+  // (boolean) Is the loader ready?
+  Loader.prototype.isReady = function(){
+    for (var s in this.assets) {
+      if (this.assets.hasOwnProperty(s) && this.assets[s] != true) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  // (int) Number of assets remaining
+  Loader.prototype.remainingAssets = function(){
+    var n = 0;
+    for (var s in this.assets) {
+      if (this.assets.hasOwnProperty(s) && this.assets[s] != true) {
+        n++;
+        console.log('remaining: ' + s);
+      }
+    }
+    return n;
+  }
+
+  // Preload the images in config.images
+  Loader.prototype.preloadImages = function(images){
+    this.register("preload");
+    for (var i = 0; i < images.length; i++) {
+      this.preloadImage(images[i]);
+    }
+    this.ready("preload");
+  }
+  Loader.prototype.preloadImage = function(src){
+    var _this = this;
+    this.register(src);
+    var img = new Image();
+    img.onload = function(){
+      _this.ready(src);
+    }
+    img.src = src;
+    if (img.complete) img.onload();
+    _this.images.push(img);
+  }
+
+  return Loader;
+})();
diff --git a/assets/javascripts/vendor/tube.js b/assets/javascripts/vendor/tube.js
new file mode 100644
index 0000000..17d3bfd
--- /dev/null
+++ b/assets/javascripts/vendor/tube.js
@@ -0,0 +1,323 @@
+var nextTick = (function(){
+  // postMessage behaves badly on IE8
+  if (window.ActiveXObject || !window.postMessage) {
+    var nextTick = function(fn) {
+      setTimeout(fn, 0);
+    }
+  } else {
+    // based on setZeroTimeout by David Baron
+    // - http://dbaron.org/log/20100309-faster-timeouts
+    var timeouts = []
+      , name = 'next-tick-zero-timeout'
+
+    window.addEventListener('message', function(e){
+      if (e.source == window && e.data == name) {
+        if (e.stopPropagation) e.stopPropagation();
+        if (timeouts.length) timeouts.shift()();
+      }
+    }, true);
+
+    var nextTick = function(fn){
+      timeouts.push(fn);
+      window.postMessage(name, '*');
+    }
+  }
+
+  return nextTick;
+})()
+
+var Uid = (function(){
+  var id = 0
+  return function(){ return id++ + "" }
+})()
+
+
+var tokenize = (function(){
+  var tokenize = function(str, splitOn){
+    return str
+             .trim()
+             .split(splitOn || tokenize.default);
+  };
+
+  tokenize.default = /\s+/g;
+
+  return tokenize;
+})()
+
+// globber("*".split(":"), "a:b:c".split(":")) => true
+// globber("*:c".split(":"), "a:b:c".split(":")) => true
+// globber("a:*".split(":"), "a:b:c".split(":")) => true
+// globber("a:*:c".split(":"), "a:b:c".split(":")) => true
+
+// based on codegolf.stackexchange.com/questions/467/implement-glob-matcher
+var globber = function(patterns, strings) {
+  // console.log("globber called with: " + patterns.join(":"), strings.join(":"))
+  var first = patterns[0],
+      rest = patterns.slice(1),
+      len = strings.length,
+      matchFound;
+
+  if(first === '*') { 
+    for(var i = 0; i <= len; ++i) {
+      // console.log("* " + i + " trying " + rest.join(":") + " with " + strings.slice(i).join(":"))
+      if(globber(rest, strings.slice(i))) return true;
+    }
+    return false;
+  } else { 
+    matchFound = (first === strings[0]);
+    // console.log ("literal matching " + first + " " + strings[0] + " " + !!matched)
+  }
+
+  return matchFound && ((!rest.length && !len) || globber(rest, strings.slice(1)));
+};
+
+var setproto = function(obj, proto){
+  if (obj.__proto__)
+    obj.__proto__ = proto;
+  else
+    for (var key in proto)
+      obj[key] = proto[key];
+};
+
+
+var Tube = (function(){
+  var globcache = {};
+  var Tube = function(opts){
+    opts = opts || {};
+    if (opts.queue){
+      var c = function(){
+        var args = arguments;
+        // queueOrNextTick (function(){ c.send.apply(c, args) });
+        nextTick (function(){ c.send.apply(c, args) });
+        return c;
+      };
+    } else {
+      var c = function(){
+        c.send.apply(c, arguments);
+        return c;
+      };
+    }
+
+    setproto(c, Tube.proto);
+    c.listeners = {};
+    c.globListeners = {};
+
+    return c;
+  };
+
+  Tube.total = {};
+  Tube.proto = {};
+
+  /*
+  adds fns as listeners to a channel
+
+  on("msg", fn, {opts})
+  on("msg", [fn, fn2], {opts})
+  on("msg msg2 msg3", fn, {opts})
+  on({"msg": fn, "msg2": fn2}, {opts})
+  */
+
+  Tube.proto.on = function(){
+    var chan = this;
+    if (typeof arguments[0] === "string") { 
+    //if (arguments.length > 1) {           // on("msg", f)
+      var msgMap = {};
+      msgMap[arguments[0]] = arguments[1];
+      var opts = arguments[2] || {};
+    } else {                              // on({"msg": f, ...})
+      var msgMap = arguments[0];
+      var opts = arguments[1] || {};
+    }
+
+    for (var string in msgMap){
+      var msgs = string.split(" ");
+      var fs = msgMap[string];
+      if (!Array.isArray(fs)) fs = [fs];
+
+      for(var i=0, f; f=fs[i]; i++){
+        if (!f.uid) f.uid = Uid();
+      }
+
+      for(var i=0, msg; msg=msgs[i]; i++){
+        var listeners = (msg.indexOf("*") === -1) ?
+                          chan.listeners :
+                          chan.globListeners;
+
+        // todo: this probably wastes a lot of memory?
+        // make a copy of the listener, add to it, and replace the listener
+        // why not just push directly?
+        // send might be iterating over it... and that will fuck up the iteration
+
+        listeners[msg] = (msg in listeners) ?
+                           listeners[msg].concat(fs) :
+                           fs.concat();
+      }
+    }
+
+    return chan;
+  };
+
+  /*
+  off()
+  off("a:b:c")
+  off(f)
+  off("a:b:c", f)
+  off("a:b:c d:e:f")
+  off([f, f2])
+  off({"a": f, "b": f2})
+  */
+
+  Tube.proto.off = function(){ var chan = this;
+
+    var listeners, i, msgs, msg;
+
+    // off() : delete all listeners. but replace, instead of delete
+    if (arguments.length === 0) { 
+      chan.listeners = {};
+      chan.globListeners = {};
+      return chan;
+    }
+
+    // off("a:b:c d:e:f")
+    // remove all matching listeners
+    if (arguments.length === 1 && typeof arguments[0] === "string"){
+      // question... will this fuck up send if we delete in the middle of it dispatching?
+      msgs = arguments[0].split(" ");
+
+      for (i=0; msg=msgs[i]; i++){
+        delete chan.listeners[msg];
+        delete chan.globListeners[msg];
+      }
+      return chan;
+    }
+
+    // off(f) or off([f, f2])
+    // remove all matching functions
+    if (typeof arguments[0] === "function" || Array.isArray(arguments[0])) {
+      var fs = (typeof arguments[0] === "function") ? 
+                 [arguments[0]] :
+                 arguments[0];
+      // TODO
+      return chan;
+    }
+
+    // off("a:b:c", f) or off({"a": f, "b": f2})
+    if (arguments.length > 1) {           // off("msg", f)
+      var msgMap = {};
+      msgMap[arguments[0]] = arguments[1];
+    } else {                              // off({"msg": f, ...})
+      var msgMap = arguments[0];
+    }
+
+    for (var string in msgMap){
+      msgs = string.split(" ");
+
+      var fs = msgMap[string];
+      if (typeof fs === "function") fs = [fs];
+
+      for(var i=0; msg=msgs[i]; i++){
+        if (msg in chan.listeners)
+          listeners = chan.listeners;
+        else if (msg in chan.globListeners)
+          listeners = chan.globListeners;
+        else
+          continue;
+
+        // gotta do this carefully in case we are still iterating through the listener in send
+        // build a new array and assign it to the property, instead of mutating it.
+
+        // console.log(" length of listeners[" + msg + "]: " + listeners[msg].length)
+        // console.log(listeners[msg].join(","));
+        // console.log(fs.join(","));
+
+        listeners[msg] = listeners[msg].filter(
+                           function(f){ return fs.indexOf(f) === -1 }
+                         );
+
+        // console.log(" length of listeners[" + msg + "]: " + listeners[msg].length)
+
+      }
+    }
+
+    return chan;
+
+  };
+
+  /*
+  c = Tube()
+  c.on("foo", fn)
+  c("foo", "bar", [])
+
+  will call fn("bar", [], "foo")
+  */
+
+  Tube.proto.send = function(msgString /*, data... */){
+    // todo: don't do this?
+    if (!Tube.total[msgString]) Tube.total[msgString] = 0
+    Tube.total[msgString]+=1;
+
+    var listener,
+        listeners = this.listeners,
+        globListeners = this.globListeners,
+        //args = Array.prototype.splice.call(arguments, 1),
+        msgs = tokenize(msgString),
+        msg, f;
+
+    if (arguments.length) {
+      var args = Array.prototype.splice.call(arguments, 1);
+      args.push(msgString);
+
+    } else {
+      var args = [];
+    }
+
+    for (var m=0; msg=msgs[m]; m++){
+
+      var fsToRun = [];
+      var uidKeyFnValue = {};
+      var uidKeyMsgStringValue = {};
+
+      // note this will die on errors
+      // todo: implement http://dean.edwards.name/weblog/2009/03/callbacks-vs-events/
+      // exact matches
+      if (listener = listeners[msg]) {
+        for (var i=0; f=listener[i]; i++){
+            // fsToRun.push([f, msg]);
+          uidKeyFnValue[f.uid] = f;
+          uidKeyMsgStringValue[f.uid] = msg;
+        }
+      }
+
+      // glob matches
+      var msgSplit = msg.split(":");
+
+      for (var pattern in globListeners){
+
+        if (pattern !== "*") { // * always matches
+          var patternSplit = globcache[pattern] || (globcache[pattern] = pattern.split(":"));
+          if (!globber(patternSplit, msgSplit)) continue;
+        }
+
+        listener = globListeners[pattern];
+
+        for (var i=0; f=listener[i]; i++){
+          //f.apply(window, args); // hm possibly pass the actual message to the func
+          // fsToRun.push([f, msg]);
+          uidKeyFnValue[f.uid] = f;
+          uidKeyMsgStringValue[f.uid] = msg;
+        }
+      }
+
+      var fns = [];
+      for (var f in uidKeyFnValue) fns.push(uidKeyFnValue[f]);
+
+      for (var i=0, f; f=fns[i]; i++)
+        f.apply(f, args);
+
+    }
+    return this;
+  };
+
+  return Tube;
+})()
+
diff --git a/assets/javascripts/vendor/tween.js b/assets/javascripts/vendor/tween.js
new file mode 100644
index 0000000..b246ead
--- /dev/null
+++ b/assets/javascripts/vendor/tween.js
@@ -0,0 +1,741 @@
+/**
+ * @author sole / http://soledadpenades.com
+ * @author mrdoob / http://mrdoob.com
+ * @author Robert Eisele / http://www.xarg.org
+ * @author Philippe / http://philippe.elsass.me
+ * @author Robert Penner / http://www.robertpenner.com/easing_terms_of_use.html
+ * @author Paul Lewis / http://www.aerotwist.com/
+ * @author lechecacharro
+ * @author Josh Faul / http://jocafa.com/
+ * @author egraether / http://egraether.com/
+ * @author endel / http://endel.me
+ * @author Ben Delarre / http://delarre.net
+ */
+
+// Date.now shim for (ahem) Internet Explo(d|r)er
+if ( Date.now === undefined ) {
+
+	Date.now = function () {
+
+		return new Date().valueOf();
+
+	};
+
+}
+
+var TWEEN = TWEEN || ( function () {
+
+	var _tweens = [];
+
+	return {
+
+		REVISION: '12',
+
+		getAll: function () {
+
+			return _tweens;
+
+		},
+
+		removeAll: function () {
+
+			_tweens = [];
+
+		},
+
+		add: function ( tween ) {
+
+			_tweens.push( tween );
+
+		},
+
+		remove: function ( tween ) {
+
+			var i = _tweens.indexOf( tween );
+
+			if ( i !== -1 ) {
+
+				_tweens.splice( i, 1 );
+
+			}
+
+		},
+
+		update: function ( time ) {
+
+			if ( _tweens.length === 0 ) return false;
+
+			var i = 0;
+
+			time = time !== undefined ? time : ( typeof window !== 'undefined' && window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
+
+			while ( i < _tweens.length ) {
+
+				if ( _tweens[ i ].update( time ) ) {
+
+					i++;
+
+				} else {
+
+					_tweens.splice( i, 1 );
+
+				}
+
+			}
+
+			return true;
+
+		}
+	};
+
+} )();
+
+TWEEN.Tween = function ( object ) {
+
+	var _object = object;
+	var _valuesStart = {};
+	var _valuesEnd = {};
+	var _valuesStartRepeat = {};
+	var _duration = 1000;
+	var _repeat = 0;
+	var _yoyo = false;
+	var _isPlaying = false;
+	var _reversed = false;
+	var _delayTime = 0;
+	var _startTime = null;
+	var _easingFunction = TWEEN.Easing.Linear.None;
+	var _interpolationFunction = TWEEN.Interpolation.Linear;
+	var _chainedTweens = [];
+	var _onStartCallback = null;
+	var _onStartCallbackFired = false;
+	var _onUpdateCallback = null;
+	var _onCompleteCallback = null;
+
+	// Set all starting values present on the target object
+	for ( var field in object ) {
+
+		_valuesStart[ field ] = parseFloat(object[field], 10);
+
+	}
+
+	this.to = function ( properties, duration ) {
+
+		if ( duration !== undefined ) {
+
+			_duration = duration;
+
+		}
+
+		_valuesEnd = properties;
+
+		return this;
+
+	};
+
+	this.start = function ( time ) {
+
+		TWEEN.add( this );
+
+		_isPlaying = true;
+
+		_onStartCallbackFired = false;
+
+		_startTime = time !== undefined ? time : ( typeof window !== 'undefined' && window.performance !== undefined && window.performance.now !== undefined ? window.performance.now() : Date.now() );
+		_startTime += _delayTime;
+
+		for ( var property in _valuesEnd ) {
+
+			// check if an Array was provided as property value
+			if ( _valuesEnd[ property ] instanceof Array ) {
+
+				if ( _valuesEnd[ property ].length === 0 ) {
+
+					continue;
+
+				}
+
+				// create a local copy of the Array with the start value at the front
+				_valuesEnd[ property ] = [ _object[ property ] ].concat( _valuesEnd[ property ] );
+
+			}
+
+			_valuesStart[ property ] = _object[ property ];
+
+			if( ( _valuesStart[ property ] instanceof Array ) === false ) {
+				_valuesStart[ property ] *= 1.0; // Ensures we're using numbers, not strings
+			}
+
+			_valuesStartRepeat[ property ] = _valuesStart[ property ] || 0;
+
+		}
+
+		return this;
+
+	};
+
+	this.stop = function () {
+
+		if ( !_isPlaying ) {
+			return this;
+		}
+
+		TWEEN.remove( this );
+		_isPlaying = false;
+		this.stopChainedTweens();
+		return this;
+
+	};
+
+	this.stopChainedTweens = function () {
+
+		for ( var i = 0, numChainedTweens = _chainedTweens.length; i < numChainedTweens; i++ ) {
+
+			_chainedTweens[ i ].stop();
+
+		}
+
+	};
+
+	this.delay = function ( amount ) {
+
+		_delayTime = amount;
+		return this;
+
+	};
+
+	this.repeat = function ( times ) {
+
+		_repeat = times;
+		return this;
+
+	};
+
+	this.yoyo = function( yoyo ) {
+
+		_yoyo = yoyo;
+		return this;
+
+	};
+
+
+	this.easing = function ( easing ) {
+
+		_easingFunction = easing;
+		return this;
+
+	};
+
+	this.interpolation = function ( interpolation ) {
+
+		_interpolationFunction = interpolation;
+		return this;
+
+	};
+
+	this.chain = function () {
+
+		_chainedTweens = arguments;
+		return this;
+
+	};
+
+	this.onStart = function ( callback ) {
+
+		_onStartCallback = callback;
+		return this;
+
+	};
+
+	this.onUpdate = function ( callback ) {
+
+		_onUpdateCallback = callback;
+		return this;
+
+	};
+
+	this.onComplete = function ( callback ) {
+
+		_onCompleteCallback = callback;
+		return this;
+
+	};
+
+	this.update = function ( time ) {
+
+		var property;
+
+		if ( time < _startTime ) {
+
+			return true;
+
+		}
+
+		if ( _onStartCallbackFired === false ) {
+
+			if ( _onStartCallback !== null ) {
+
+				_onStartCallback.call( _object );
+
+			}
+
+			_onStartCallbackFired = true;
+
+		}
+
+		var elapsed = ( time - _startTime ) / _duration;
+		elapsed = elapsed > 1 ? 1 : elapsed;
+
+		var value = _easingFunction( elapsed );
+
+		for ( property in _valuesEnd ) {
+
+			var start = _valuesStart[ property ] || 0;
+			var end = _valuesEnd[ property ];
+
+			if ( end instanceof Array ) {
+
+				_object[ property ] = _interpolationFunction( end, value );
+
+			} else {
+
+                // Parses relative end values with start as base (e.g.: +10, -3)
+				if ( typeof(end) === "string" ) {
+					end = start + parseFloat(end, 10);
+				}
+
+				// protect against non numeric properties.
+                if ( typeof(end) === "number" ) {
+					_object[ property ] = start + ( end - start ) * value;
+				}
+
+			}
+
+		}
+
+		if ( _onUpdateCallback !== null ) {
+
+			_onUpdateCallback.call( _object, value );
+
+		}
+
+		if ( elapsed == 1 ) {
+
+			if ( _repeat > 0 ) {
+
+				if( isFinite( _repeat ) ) {
+					_repeat--;
+				}
+
+				// reassign starting values, restart by making startTime = now
+				for( property in _valuesStartRepeat ) {
+
+					if ( typeof( _valuesEnd[ property ] ) === "string" ) {
+						_valuesStartRepeat[ property ] = _valuesStartRepeat[ property ] + parseFloat(_valuesEnd[ property ], 10);
+					}
+
+					if (_yoyo) {
+						var tmp = _valuesStartRepeat[ property ];
+						_valuesStartRepeat[ property ] = _valuesEnd[ property ];
+						_valuesEnd[ property ] = tmp;
+						_reversed = !_reversed;
+					}
+					_valuesStart[ property ] = _valuesStartRepeat[ property ];
+
+				}
+
+				_startTime = time + _delayTime;
+
+				return true;
+
+			} else {
+
+				if ( _onCompleteCallback !== null ) {
+
+					_onCompleteCallback.call( _object );
+
+				}
+
+				for ( var i = 0, numChainedTweens = _chainedTweens.length; i < numChainedTweens; i++ ) {
+
+					_chainedTweens[ i ].start( time );
+
+				}
+
+				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 ) {
+
+			var s, a = 0.1, p = 0.4;
+			if ( k === 0 ) return 0;
+			if ( k === 1 ) return 1;
+			if ( !a || a < 1 ) { a = 1; s = p / 4; }
+			else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
+			return - ( a * Math.pow( 2, 10 * ( k -= 1 ) ) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) );
+
+		},
+
+		Out: function ( k ) {
+
+			var s, a = 0.1, p = 0.4;
+			if ( k === 0 ) return 0;
+			if ( k === 1 ) return 1;
+			if ( !a || a < 1 ) { a = 1; s = p / 4; }
+			else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
+			return ( a * Math.pow( 2, - 10 * k) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) + 1 );
+
+		},
+
+		InOut: function ( k ) {
+
+			var s, a = 0.1, p = 0.4;
+			if ( k === 0 ) return 0;
+			if ( k === 1 ) return 1;
+			if ( !a || a < 1 ) { a = 1; s = p / 4; }
+			else s = p * Math.asin( 1 / a ) / ( 2 * Math.PI );
+			if ( ( k *= 2 ) < 1 ) return - 0.5 * ( a * Math.pow( 2, 10 * ( k -= 1 ) ) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) );
+			return a * Math.pow( 2, -10 * ( k -= 1 ) ) * Math.sin( ( k - s ) * ( 2 * Math.PI ) / p ) * 0.5 + 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, f = m * k, i = Math.floor( f ), 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, n = v.length - 1, pw = Math.pow, bn = TWEEN.Interpolation.Utils.Bernstein, i;
+
+		for ( 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, f = m * k, i = Math.floor( f ), 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, i;
+				if ( a[ n ] ) return a[ n ];
+				for ( i = n; i > 1; i-- ) s *= i;
+				return a[ n ] = s;
+
+			};
+
+		} )(),
+
+		CatmullRom: function ( p0, p1, p2, p3, t ) {
+
+			var v0 = ( p2 - p0 ) * 0.5, v1 = ( p3 - p1 ) * 0.5, t2 = t * t, t3 = t * t2;
+			return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;
+
+		}
+
+	}
+
+};