git.roojs.org Git - roojs1/blob - docs/src/Roo_bootstrap_BezierSignature.js.html

   1 <html><head><title>/home/alan/gitlive/roojs1/Roo/bootstrap/BezierSignature.js</title><link rel="stylesheet" type="text/css" href="../../css/highlight-js.css"/></head><body class="highlightpage"><code class="jsdoc-pretty"><span class="jsdoc-comment">/**
   2 *    This script refer to:
   3 *    Title: Signature Pad
   4 *    Author: szimek
   5 *    Availability: https://github.com/szimek/signature_pad
   6 **/
   7
   8 /**
   9  * @class Roo.bootstrap.BezierSignature
  10  * @extends Roo.bootstrap.Component
  11  * Bootstrap BezierSignature class
  12  *
  13  * @constructor
  14  * Create a new BezierSignature
  15  * @param {Object} config The config object
  16  */
  17
  18 </span><span class="jsdoc-var">Roo.bootstrap.BezierSignature </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">config</span><span class="jsdoc-syntax">){
  19     </span><span class="jsdoc-var">Roo.bootstrap.BezierSignature.superclass.constructor.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">config</span><span class="jsdoc-syntax">);
  20     </span><span class="jsdoc-var">this.addEvents</span><span class="jsdoc-syntax">({
  21         </span><span class="jsdoc-string">&quot;resize&quot; </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true
  22     </span><span class="jsdoc-syntax">});
  23 };
  24
  25 </span><span class="jsdoc-var">Roo.extend</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">Roo.bootstrap.BezierSignature</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">Roo.bootstrap.Component</span><span class="jsdoc-syntax">,
  26 {
  27
  28     </span><span class="jsdoc-var">curve_data</span><span class="jsdoc-syntax">: [],
  29
  30     </span><span class="jsdoc-var">is_empty</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
  31
  32     </span><span class="jsdoc-var">mouse_btn_down</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
  33
  34     </span><span class="jsdoc-comment">/**
  35      * @cfg {int} canvas height
  36      */
  37     </span><span class="jsdoc-var">canvas_height</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'200px'</span><span class="jsdoc-syntax">,
  38
  39     </span><span class="jsdoc-comment">/**
  40      * @cfg {float|function} Radius of a single dot.
  41      */
  42     </span><span class="jsdoc-var">dot_size</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
  43
  44     </span><span class="jsdoc-comment">/**
  45      * @cfg {float} Minimum width of a line. Defaults to 0.5.
  46      */
  47     </span><span class="jsdoc-var">min_width</span><span class="jsdoc-syntax">: 0.5,
  48
  49     </span><span class="jsdoc-comment">/**
  50      * @cfg {float} Maximum width of a line. Defaults to 2.5.
  51      */
  52     </span><span class="jsdoc-var">max_width</span><span class="jsdoc-syntax">: 2.5,
  53
  54     </span><span class="jsdoc-comment">/**
  55      * @cfg {integer} Draw the next point at most once per every x milliseconds. Set it to 0 to turn off throttling. Defaults to 16.
  56      */
  57     </span><span class="jsdoc-var">throttle</span><span class="jsdoc-syntax">: 16,
  58
  59     </span><span class="jsdoc-comment">/**
  60      * @cfg {integer} Add the next point only if the previous one is farther than x pixels. Defaults to 5.
  61      */
  62     </span><span class="jsdoc-var">min_distance</span><span class="jsdoc-syntax">: 5,
  63
  64     </span><span class="jsdoc-comment">/**
  65      * @cfg {string} Color used to clear the background. Can be any color format accepted by context.fillStyle. Defaults to &quot;rgba(0,0,0,0)&quot; (transparent black). Use a non-transparent color e.g. &quot;rgb(255,255,255)&quot; (opaque white) if you'd like to save signatures as JPEG images.
  66      */
  67     </span><span class="jsdoc-var">bg_color</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'rgba(0, 0, 0, 0)'</span><span class="jsdoc-syntax">,
  68
  69     </span><span class="jsdoc-comment">/**
  70      * @cfg {string} Color used to draw the lines. Can be any color format accepted by context.fillStyle. Defaults to &quot;black&quot;.
  71      */
  72     </span><span class="jsdoc-var">dot_color</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'black'</span><span class="jsdoc-syntax">,
  73
  74     </span><span class="jsdoc-comment">/**
  75      * @cfg {float} Weight used to modify new velocity based on the previous velocity. Defaults to 0.7.
  76      */
  77     </span><span class="jsdoc-var">velocity_filter_weight</span><span class="jsdoc-syntax">: 0.7,
  78
  79     </span><span class="jsdoc-comment">/**
  80      * @cfg {function} Callback when stroke begin.
  81      */
  82     </span><span class="jsdoc-var">onBegin</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
  83
  84     </span><span class="jsdoc-comment">/**
  85      * @cfg {function} Callback when stroke end.
  86      */
  87     </span><span class="jsdoc-var">onEnd</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
  88
  89     </span><span class="jsdoc-var">getAutoCreate </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
  90     {
  91         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">cls </span><span class="jsdoc-syntax">= </span><span class="jsdoc-string">'roo-signature column'</span><span class="jsdoc-syntax">;
  92
  93         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.cls</span><span class="jsdoc-syntax">){
  94             </span><span class="jsdoc-var">cls </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-string">' ' </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">this.cls</span><span class="jsdoc-syntax">;
  95         }
  96
  97         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">col_sizes </span><span class="jsdoc-syntax">= [
  98             </span><span class="jsdoc-string">'lg'</span><span class="jsdoc-syntax">,
  99             </span><span class="jsdoc-string">'md'</span><span class="jsdoc-syntax">,
 100             </span><span class="jsdoc-string">'sm'</span><span class="jsdoc-syntax">,
 101             </span><span class="jsdoc-string">'xs'
 102         </span><span class="jsdoc-syntax">];
 103
 104         </span><span class="jsdoc-keyword">for</span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">col_sizes.length</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">++) {
 105             </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">col_sizes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]]) {
 106                 </span><span class="jsdoc-var">cls </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-string">&quot; col-&quot;</span><span class="jsdoc-syntax">+</span><span class="jsdoc-var">col_sizes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]+</span><span class="jsdoc-string">&quot;-&quot;</span><span class="jsdoc-syntax">+</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">col_sizes</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">]];
 107             }
 108         }
 109
 110         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">cfg </span><span class="jsdoc-syntax">= {
 111             </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'div'</span><span class="jsdoc-syntax">,
 112             </span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">,
 113             </span><span class="jsdoc-var">cn</span><span class="jsdoc-syntax">: [
 114                 {
 115                     </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'div'</span><span class="jsdoc-syntax">,
 116                     </span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'roo-signature-body'</span><span class="jsdoc-syntax">,
 117                     </span><span class="jsdoc-var">cn</span><span class="jsdoc-syntax">: [
 118                         {
 119                             </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'canvas'</span><span class="jsdoc-syntax">,
 120                             </span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'roo-signature-body-canvas'</span><span class="jsdoc-syntax">,
 121                             </span><span class="jsdoc-var">height</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.canvas_height</span><span class="jsdoc-syntax">,
 122                             </span><span class="jsdoc-var">width</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.canvas_width
 123                         </span><span class="jsdoc-syntax">}
 124                     ]
 125                 },
 126                 {
 127                     </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'input'</span><span class="jsdoc-syntax">,
 128                     </span><span class="jsdoc-var">type</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'file'</span><span class="jsdoc-syntax">,
 129                     </span><span class="jsdoc-var">style</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'display: none'
 130                 </span><span class="jsdoc-syntax">}
 131             ]
 132         };
 133
 134         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">cfg</span><span class="jsdoc-syntax">;
 135     },
 136
 137     </span><span class="jsdoc-var">initEvents</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
 138     {
 139         </span><span class="jsdoc-var">Roo.bootstrap.BezierSignature.superclass.initEvents.call</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 140
 141         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">canvas </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasEl</span><span class="jsdoc-syntax">();
 142
 143         </span><span class="jsdoc-comment">// mouse &amp;&amp; touch event swapping...
 144         </span><span class="jsdoc-var">canvas.dom.style.touchAction </span><span class="jsdoc-syntax">= </span><span class="jsdoc-string">'none'</span><span class="jsdoc-syntax">;
 145         </span><span class="jsdoc-var">canvas.dom.style.msTouchAction </span><span class="jsdoc-syntax">= </span><span class="jsdoc-string">'none'</span><span class="jsdoc-syntax">;
 146
 147         </span><span class="jsdoc-var">this.mouse_btn_down </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 148         </span><span class="jsdoc-var">canvas.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'mousedown'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleMouseDown</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 149         </span><span class="jsdoc-var">canvas.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'mousemove'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleMouseMove</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 150         </span><span class="jsdoc-var">Roo.select</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'html'</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.first</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'mouseup'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleMouseUp</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 151
 152         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">window.PointerEvent</span><span class="jsdoc-syntax">) {
 153             </span><span class="jsdoc-var">canvas.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'pointerdown'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleMouseDown</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 154             </span><span class="jsdoc-var">canvas.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'pointermove'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleMouseMove</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 155             </span><span class="jsdoc-var">Roo.select</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'html'</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.first</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'pointerup'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleMouseUp</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 156         }
 157
 158         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'ontouchstart' </span><span class="jsdoc-keyword">in </span><span class="jsdoc-var">window</span><span class="jsdoc-syntax">) {
 159             </span><span class="jsdoc-var">canvas.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'touchstart'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleTouchStart</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 160             </span><span class="jsdoc-var">canvas.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'touchmove'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleTouchMove</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 161             </span><span class="jsdoc-var">canvas.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'touchend'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this._handleTouchEnd</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 162         }
 163
 164         </span><span class="jsdoc-var">Roo.EventManager.onWindowResize</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.resize</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">, </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">);
 165
 166         </span><span class="jsdoc-comment">// file input event
 167         </span><span class="jsdoc-var">this.fileEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.on</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'change'</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.uploadImage</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 168
 169         </span><span class="jsdoc-var">this.clear</span><span class="jsdoc-syntax">();
 170
 171         </span><span class="jsdoc-var">this.resize</span><span class="jsdoc-syntax">();
 172     },
 173
 174     </span><span class="jsdoc-var">resize</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
 175
 176         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">canvas </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom</span><span class="jsdoc-syntax">;
 177         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ctx </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">();
 178         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">img_data </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 179
 180         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">canvas.width </span><span class="jsdoc-syntax">&gt; 0) {
 181             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">img_data </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">ctx.getImageData</span><span class="jsdoc-syntax">(0, 0, </span><span class="jsdoc-var">canvas.width</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">canvas.height</span><span class="jsdoc-syntax">);
 182         }
 183         </span><span class="jsdoc-comment">// setting canvas width will clean img data
 184         </span><span class="jsdoc-var">canvas.width </span><span class="jsdoc-syntax">= 0;
 185
 186         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">style </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">window.getComputedStyle </span><span class="jsdoc-syntax">?
 187             </span><span class="jsdoc-var">getComputedStyle</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.el.dom</span><span class="jsdoc-syntax">, </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">) : </span><span class="jsdoc-var">this.el.dom.currentStyle</span><span class="jsdoc-syntax">;
 188
 189         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">padding_left </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">parseInt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">style.paddingLeft</span><span class="jsdoc-syntax">) || 0;
 190         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">padding_right </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">parseInt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">style.paddingRight</span><span class="jsdoc-syntax">) || 0;
 191
 192         </span><span class="jsdoc-var">canvas.width </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.el.dom.clientWidth </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">padding_left </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">padding_right</span><span class="jsdoc-syntax">;
 193
 194         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">img_data</span><span class="jsdoc-syntax">) {
 195             </span><span class="jsdoc-var">ctx.putImageData</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">img_data</span><span class="jsdoc-syntax">, 0, 0);
 196         }
 197     },
 198
 199     </span><span class="jsdoc-var">_handleMouseDown</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 200     {
 201         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e.browserEvent.which </span><span class="jsdoc-syntax">=== 1) {
 202             </span><span class="jsdoc-var">this.mouse_btn_down </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">;
 203             </span><span class="jsdoc-var">this.strokeBegin</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 204         }
 205     },
 206
 207     </span><span class="jsdoc-var">_handleMouseMove</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 208     {
 209         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.mouse_btn_down</span><span class="jsdoc-syntax">) {
 210             </span><span class="jsdoc-var">this.strokeMoveUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 211         }
 212     },
 213
 214     </span><span class="jsdoc-var">_handleMouseUp</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 215     {
 216         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e.browserEvent.which </span><span class="jsdoc-syntax">=== 1 &amp;&amp; </span><span class="jsdoc-var">this.mouse_btn_down</span><span class="jsdoc-syntax">) {
 217             </span><span class="jsdoc-var">this.mouse_btn_down </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 218             </span><span class="jsdoc-var">this.strokeEnd</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 219         }
 220     },
 221
 222     </span><span class="jsdoc-var">_handleTouchStart</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">) {
 223
 224         </span><span class="jsdoc-var">e.preventDefault</span><span class="jsdoc-syntax">();
 225         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e.browserEvent.targetTouches.length </span><span class="jsdoc-syntax">=== 1) {
 226             </span><span class="jsdoc-comment">// var touch = e.browserEvent.changedTouches[0];
 227             // this.strokeBegin(touch);
 228
 229              </span><span class="jsdoc-var">this.strokeBegin</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">); </span><span class="jsdoc-comment">// assume e catching the correct xy...
 230         </span><span class="jsdoc-syntax">}
 231     },
 232
 233     </span><span class="jsdoc-var">_handleTouchMove</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">) {
 234         </span><span class="jsdoc-var">e.preventDefault</span><span class="jsdoc-syntax">();
 235         </span><span class="jsdoc-comment">// var touch = event.targetTouches[0];
 236         // _this._strokeMoveUpdate(touch);
 237         </span><span class="jsdoc-var">this.strokeMoveUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 238     },
 239
 240     </span><span class="jsdoc-var">_handleTouchEnd</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">) {
 241         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">wasCanvasTouched </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">e.target </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-var">this.canvasEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom</span><span class="jsdoc-syntax">;
 242         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">wasCanvasTouched</span><span class="jsdoc-syntax">) {
 243             </span><span class="jsdoc-var">e.preventDefault</span><span class="jsdoc-syntax">();
 244             </span><span class="jsdoc-comment">// var touch = event.changedTouches[0];
 245             // _this._strokeEnd(touch);
 246             </span><span class="jsdoc-var">this.strokeEnd</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 247         }
 248     },
 249
 250     </span><span class="jsdoc-var">reset</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
 251         </span><span class="jsdoc-var">this._lastPoints </span><span class="jsdoc-syntax">= [];
 252         </span><span class="jsdoc-var">this._lastVelocity </span><span class="jsdoc-syntax">= 0;
 253         </span><span class="jsdoc-var">this._lastWidth </span><span class="jsdoc-syntax">= (</span><span class="jsdoc-var">this.min_width </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">this.max_width</span><span class="jsdoc-syntax">) / 2;
 254         </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.fillStyle </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.dot_color</span><span class="jsdoc-syntax">;
 255     },
 256
 257     </span><span class="jsdoc-var">strokeMoveUpdate</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 258     {
 259         </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 260
 261         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.throttle</span><span class="jsdoc-syntax">) {
 262             </span><span class="jsdoc-var">this.throttle</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.throttle</span><span class="jsdoc-syntax">);
 263         }
 264         </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
 265             </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 266         }
 267     },
 268
 269     </span><span class="jsdoc-var">strokeBegin</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 270     {
 271         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">newPointGroup </span><span class="jsdoc-syntax">= {
 272             </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.dot_color</span><span class="jsdoc-syntax">,
 273             </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">: []
 274         };
 275
 276         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">this.onBegin </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-string">'function'</span><span class="jsdoc-syntax">) {
 277             </span><span class="jsdoc-var">this.onBegin</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 278         }
 279
 280         </span><span class="jsdoc-var">this.curve_data.push</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">newPointGroup</span><span class="jsdoc-syntax">);
 281         </span><span class="jsdoc-var">this.reset</span><span class="jsdoc-syntax">();
 282         </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 283     },
 284
 285     </span><span class="jsdoc-var">strokeUpdate</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 286     {
 287         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">rect </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom.getBoundingClientRect</span><span class="jsdoc-syntax">();
 288         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">point </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">this.Point</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e.xy</span><span class="jsdoc-syntax">[0] - </span><span class="jsdoc-var">rect.left</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">e.xy</span><span class="jsdoc-syntax">[1] - </span><span class="jsdoc-var">rect.top</span><span class="jsdoc-syntax">, </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Date</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.getTime</span><span class="jsdoc-syntax">());
 289         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">lastPointGroup </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.curve_data</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">this.curve_data.length </span><span class="jsdoc-syntax">- 1];
 290         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">lastPoints </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">lastPointGroup.points</span><span class="jsdoc-syntax">;
 291         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">lastPoint </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">lastPoints.length </span><span class="jsdoc-syntax">&gt; 0 &amp;&amp; </span><span class="jsdoc-var">lastPoints</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">lastPoints.length </span><span class="jsdoc-syntax">- 1];
 292         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">isLastPointTooClose </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">lastPoint
 293             </span><span class="jsdoc-syntax">? </span><span class="jsdoc-var">point.distanceTo</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">lastPoint</span><span class="jsdoc-syntax">) &lt;= </span><span class="jsdoc-var">this.min_distance
 294             </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 295         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">color </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">lastPointGroup.color</span><span class="jsdoc-syntax">;
 296         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">lastPoint </span><span class="jsdoc-syntax">|| !(</span><span class="jsdoc-var">lastPoint </span><span class="jsdoc-syntax">&amp;&amp; </span><span class="jsdoc-var">isLastPointTooClose</span><span class="jsdoc-syntax">)) {
 297             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">curve </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.addPoint</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">point</span><span class="jsdoc-syntax">);
 298             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">lastPoint</span><span class="jsdoc-syntax">) {
 299                 </span><span class="jsdoc-var">this.drawDot</span><span class="jsdoc-syntax">({</span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">point</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">point</span><span class="jsdoc-syntax">});
 300             }
 301             </span><span class="jsdoc-keyword">else if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">curve</span><span class="jsdoc-syntax">) {
 302                 </span><span class="jsdoc-var">this.drawCurve</span><span class="jsdoc-syntax">({</span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">curve</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">curve</span><span class="jsdoc-syntax">});
 303             }
 304             </span><span class="jsdoc-var">lastPoints.push</span><span class="jsdoc-syntax">({
 305                 </span><span class="jsdoc-var">time</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">point.time</span><span class="jsdoc-syntax">,
 306                 </span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">point.x</span><span class="jsdoc-syntax">,
 307                 </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">point.y
 308             </span><span class="jsdoc-syntax">});
 309         }
 310     },
 311
 312     </span><span class="jsdoc-var">strokeEnd</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 313     {
 314         </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 315         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">this.onEnd </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-string">'function'</span><span class="jsdoc-syntax">) {
 316             </span><span class="jsdoc-var">this.onEnd</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
 317         }
 318     },
 319
 320     </span><span class="jsdoc-var">addPoint</span><span class="jsdoc-syntax">:  </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">point</span><span class="jsdoc-syntax">) {
 321         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">_lastPoints </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this._lastPoints</span><span class="jsdoc-syntax">;
 322         </span><span class="jsdoc-var">_lastPoints.push</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">point</span><span class="jsdoc-syntax">);
 323         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_lastPoints.length </span><span class="jsdoc-syntax">&gt; 2) {
 324             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_lastPoints.length </span><span class="jsdoc-syntax">=== 3) {
 325                 </span><span class="jsdoc-var">_lastPoints.unshift</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_lastPoints</span><span class="jsdoc-syntax">[0]);
 326             }
 327             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">widths </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.calculateCurveWidths</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_lastPoints</span><span class="jsdoc-syntax">[1], </span><span class="jsdoc-var">_lastPoints</span><span class="jsdoc-syntax">[2]);
 328             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">curve </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.Bezier.fromPoints</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_lastPoints</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">widths</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 329             </span><span class="jsdoc-var">_lastPoints.shift</span><span class="jsdoc-syntax">();
 330             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">curve</span><span class="jsdoc-syntax">;
 331         }
 332         </span><span class="jsdoc-keyword">return null</span><span class="jsdoc-syntax">;
 333     },
 334
 335     </span><span class="jsdoc-var">calculateCurveWidths</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">startPoint</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">endPoint</span><span class="jsdoc-syntax">) {
 336         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">velocity </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.velocity_filter_weight </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">endPoint.velocityFrom</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">startPoint</span><span class="jsdoc-syntax">) +
 337             (1 - </span><span class="jsdoc-var">this.velocity_filter_weight</span><span class="jsdoc-syntax">) * </span><span class="jsdoc-var">this._lastVelocity</span><span class="jsdoc-syntax">;
 338
 339         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">newWidth </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.max</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.max_width </span><span class="jsdoc-syntax">/ (</span><span class="jsdoc-var">velocity </span><span class="jsdoc-syntax">+ 1), </span><span class="jsdoc-var">this.min_width</span><span class="jsdoc-syntax">);
 340         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">widths </span><span class="jsdoc-syntax">= {
 341             </span><span class="jsdoc-var">end</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">newWidth</span><span class="jsdoc-syntax">,
 342             </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this._lastWidth
 343         </span><span class="jsdoc-syntax">};
 344
 345         </span><span class="jsdoc-var">this._lastVelocity </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">velocity</span><span class="jsdoc-syntax">;
 346         </span><span class="jsdoc-var">this._lastWidth </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">newWidth</span><span class="jsdoc-syntax">;
 347         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">widths</span><span class="jsdoc-syntax">;
 348     },
 349
 350     </span><span class="jsdoc-var">drawDot</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_a</span><span class="jsdoc-syntax">) {
 351         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">color </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">_a.color</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">point </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">_a.point</span><span class="jsdoc-syntax">;
 352         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ctx </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">();
 353         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">width </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">typeof </span><span class="jsdoc-var">this.dot_size </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-string">'function' </span><span class="jsdoc-syntax">? </span><span class="jsdoc-var">this.dot_size</span><span class="jsdoc-syntax">() : </span><span class="jsdoc-var">this.dot_size</span><span class="jsdoc-syntax">;
 354         </span><span class="jsdoc-var">ctx.beginPath</span><span class="jsdoc-syntax">();
 355         </span><span class="jsdoc-var">this.drawCurveSegment</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">point.x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">point.y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">width</span><span class="jsdoc-syntax">);
 356         </span><span class="jsdoc-var">ctx.closePath</span><span class="jsdoc-syntax">();
 357         </span><span class="jsdoc-var">ctx.fillStyle </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">;
 358         </span><span class="jsdoc-var">ctx.fill</span><span class="jsdoc-syntax">();
 359     },
 360
 361     </span><span class="jsdoc-var">drawCurve</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_a</span><span class="jsdoc-syntax">) {
 362         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">color </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">_a.color</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">curve </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">_a.curve</span><span class="jsdoc-syntax">;
 363         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ctx </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">();
 364         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">widthDelta </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">curve.endWidth </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">curve.startWidth</span><span class="jsdoc-syntax">;
 365         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">drawSteps </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.floor</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">curve.length</span><span class="jsdoc-syntax">()) * 2;
 366         </span><span class="jsdoc-var">ctx.beginPath</span><span class="jsdoc-syntax">();
 367         </span><span class="jsdoc-var">ctx.fillStyle </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">;
 368         </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">drawSteps</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">+= 1) {
 369         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">/ </span><span class="jsdoc-var">drawSteps</span><span class="jsdoc-syntax">;
 370         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">tt </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">;
 371         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ttt </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">tt </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">;
 372         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">u </span><span class="jsdoc-syntax">= 1 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">;
 373         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">uu </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">u </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">u</span><span class="jsdoc-syntax">;
 374         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">uuu </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">uu </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">u</span><span class="jsdoc-syntax">;
 375         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">x </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">uuu </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.startPoint.x</span><span class="jsdoc-syntax">;
 376         </span><span class="jsdoc-var">x </span><span class="jsdoc-syntax">+= 3 * </span><span class="jsdoc-var">uu </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.control1.x</span><span class="jsdoc-syntax">;
 377         </span><span class="jsdoc-var">x </span><span class="jsdoc-syntax">+= 3 * </span><span class="jsdoc-var">u </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">tt </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.control2.x</span><span class="jsdoc-syntax">;
 378         </span><span class="jsdoc-var">x </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-var">ttt </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.endPoint.x</span><span class="jsdoc-syntax">;
 379         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">y </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">uuu </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.startPoint.y</span><span class="jsdoc-syntax">;
 380         </span><span class="jsdoc-var">y </span><span class="jsdoc-syntax">+= 3 * </span><span class="jsdoc-var">uu </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.control1.y</span><span class="jsdoc-syntax">;
 381         </span><span class="jsdoc-var">y </span><span class="jsdoc-syntax">+= 3 * </span><span class="jsdoc-var">u </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">tt </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.control2.y</span><span class="jsdoc-syntax">;
 382         </span><span class="jsdoc-var">y </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-var">ttt </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">curve.endPoint.y</span><span class="jsdoc-syntax">;
 383         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">width </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">curve.startWidth </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">ttt </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">widthDelta</span><span class="jsdoc-syntax">;
 384         </span><span class="jsdoc-var">this.drawCurveSegment</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">width</span><span class="jsdoc-syntax">);
 385         }
 386         </span><span class="jsdoc-var">ctx.closePath</span><span class="jsdoc-syntax">();
 387         </span><span class="jsdoc-var">ctx.fill</span><span class="jsdoc-syntax">();
 388     },
 389
 390     </span><span class="jsdoc-var">drawCurveSegment</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">width</span><span class="jsdoc-syntax">) {
 391         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ctx </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">();
 392         </span><span class="jsdoc-var">ctx.moveTo</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">);
 393         </span><span class="jsdoc-var">ctx.arc</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">width</span><span class="jsdoc-syntax">, 0, 2 * </span><span class="jsdoc-var">Math.PI</span><span class="jsdoc-syntax">, </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">);
 394         </span><span class="jsdoc-var">this.is_empty </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 395     },
 396
 397     </span><span class="jsdoc-var">clear</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
 398     {
 399         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ctx </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">();
 400         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">canvas </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.canvasEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom</span><span class="jsdoc-syntax">;
 401         </span><span class="jsdoc-var">ctx.fillStyle </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.bg_color</span><span class="jsdoc-syntax">;
 402         </span><span class="jsdoc-var">ctx.clearRect</span><span class="jsdoc-syntax">(0, 0, </span><span class="jsdoc-var">canvas.width</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">canvas.height</span><span class="jsdoc-syntax">);
 403         </span><span class="jsdoc-var">ctx.fillRect</span><span class="jsdoc-syntax">(0, 0, </span><span class="jsdoc-var">canvas.width</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">canvas.height</span><span class="jsdoc-syntax">);
 404         </span><span class="jsdoc-var">this.curve_data </span><span class="jsdoc-syntax">= [];
 405         </span><span class="jsdoc-var">this.reset</span><span class="jsdoc-syntax">();
 406         </span><span class="jsdoc-var">this.is_empty </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">;
 407     },
 408
 409     </span><span class="jsdoc-var">fileEl</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
 410     {
 411         </span><span class="jsdoc-keyword">return  </span><span class="jsdoc-var">this.el.select</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'input'</span><span class="jsdoc-syntax">,</span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.first</span><span class="jsdoc-syntax">();
 412     },
 413
 414     </span><span class="jsdoc-var">canvasEl</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
 415     {
 416         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">this.el.select</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'canvas'</span><span class="jsdoc-syntax">,</span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.first</span><span class="jsdoc-syntax">();
 417     },
 418
 419     </span><span class="jsdoc-var">canvasElCtx</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
 420     {
 421         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">this.el.select</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'canvas'</span><span class="jsdoc-syntax">,</span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.first</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom.getContext</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'2d'</span><span class="jsdoc-syntax">);
 422     },
 423
 424     </span><span class="jsdoc-var">getImage</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">type</span><span class="jsdoc-syntax">)
 425     {
 426         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.is_empty</span><span class="jsdoc-syntax">) {
 427             </span><span class="jsdoc-keyword">return false</span><span class="jsdoc-syntax">;
 428         }
 429
 430         </span><span class="jsdoc-comment">// encryption ?
 431         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">this.canvasEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom.toDataURL</span><span class="jsdoc-syntax">(</span><span class="jsdoc-string">'image/'</span><span class="jsdoc-syntax">+</span><span class="jsdoc-var">type</span><span class="jsdoc-syntax">, 1);
 432     },
 433
 434     </span><span class="jsdoc-var">drawFromImage</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">img_src</span><span class="jsdoc-syntax">)
 435     {
 436         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">img </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Image</span><span class="jsdoc-syntax">();
 437
 438         </span><span class="jsdoc-var">img.onload </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
 439             </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.drawImage</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">img</span><span class="jsdoc-syntax">, 0, 0);
 440         }</span><span class="jsdoc-var">.bind</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 441
 442         </span><span class="jsdoc-var">img.src </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">img_src</span><span class="jsdoc-syntax">;
 443
 444         </span><span class="jsdoc-var">this.is_empty </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
 445     },
 446
 447     </span><span class="jsdoc-var">selectImage</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
 448     {
 449         </span><span class="jsdoc-var">this.fileEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom.click</span><span class="jsdoc-syntax">();
 450     },
 451
 452     </span><span class="jsdoc-var">uploadImage</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">)
 453     {
 454         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">reader </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">FileReader</span><span class="jsdoc-syntax">();
 455
 456         </span><span class="jsdoc-var">reader.onload </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">){
 457             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">img </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">Image</span><span class="jsdoc-syntax">();
 458             </span><span class="jsdoc-var">img.onload </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
 459                 </span><span class="jsdoc-var">this.reset</span><span class="jsdoc-syntax">();
 460                 </span><span class="jsdoc-var">this.canvasElCtx</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.drawImage</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">img</span><span class="jsdoc-syntax">, 0, 0);
 461             }</span><span class="jsdoc-var">.bind</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 462             </span><span class="jsdoc-var">img.src </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">e.target.result</span><span class="jsdoc-syntax">;
 463         }</span><span class="jsdoc-var">.bind</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
 464
 465         </span><span class="jsdoc-var">reader.readAsDataURL</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e.target.files</span><span class="jsdoc-syntax">[0]);
 466     },
 467
 468     </span><span class="jsdoc-comment">// Bezier Point Constructor
 469     </span><span class="jsdoc-var">Point</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
 470         </span><span class="jsdoc-keyword">function </span><span class="jsdoc-var">Point</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">time</span><span class="jsdoc-syntax">) {
 471             </span><span class="jsdoc-var">this.x </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">;
 472             </span><span class="jsdoc-var">this.y </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">;
 473             </span><span class="jsdoc-var">this.time </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">time </span><span class="jsdoc-syntax">|| </span><span class="jsdoc-var">Date.now</span><span class="jsdoc-syntax">();
 474         }
 475         </span><span class="jsdoc-var">Point.prototype.distanceTo </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">) {
 476             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">Math.sqrt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">Math.pow</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.x </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">start.x</span><span class="jsdoc-syntax">, 2) + </span><span class="jsdoc-var">Math.pow</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.y </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">start.y</span><span class="jsdoc-syntax">, 2));
 477         };
 478         </span><span class="jsdoc-var">Point.prototype.equals </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">other</span><span class="jsdoc-syntax">) {
 479             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">this.x </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-var">other.x </span><span class="jsdoc-syntax">&amp;&amp; </span><span class="jsdoc-var">this.y </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-var">other.y </span><span class="jsdoc-syntax">&amp;&amp; </span><span class="jsdoc-var">this.time </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-var">other.time</span><span class="jsdoc-syntax">;
 480         };
 481         </span><span class="jsdoc-var">Point.prototype.velocityFrom </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">) {
 482             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">this.time </span><span class="jsdoc-syntax">!== </span><span class="jsdoc-var">start.time
 483             </span><span class="jsdoc-syntax">? </span><span class="jsdoc-var">this.distanceTo</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">) / (</span><span class="jsdoc-var">this.time </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">start.time</span><span class="jsdoc-syntax">)
 484             : 0;
 485         };
 486         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">Point</span><span class="jsdoc-syntax">;
 487     }()),
 488
 489
 490     </span><span class="jsdoc-comment">// Bezier Constructor
 491     </span><span class="jsdoc-var">Bezier</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
 492         </span><span class="jsdoc-keyword">function </span><span class="jsdoc-var">Bezier</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">startPoint</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">control2</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">control1</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">endPoint</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">startWidth</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">endWidth</span><span class="jsdoc-syntax">) {
 493             </span><span class="jsdoc-var">this.startPoint </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">startPoint</span><span class="jsdoc-syntax">;
 494             </span><span class="jsdoc-var">this.control2 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">control2</span><span class="jsdoc-syntax">;
 495             </span><span class="jsdoc-var">this.control1 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">control1</span><span class="jsdoc-syntax">;
 496             </span><span class="jsdoc-var">this.endPoint </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">endPoint</span><span class="jsdoc-syntax">;
 497             </span><span class="jsdoc-var">this.startWidth </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">startWidth</span><span class="jsdoc-syntax">;
 498             </span><span class="jsdoc-var">this.endWidth </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">endWidth</span><span class="jsdoc-syntax">;
 499         }
 500         </span><span class="jsdoc-var">Bezier.fromPoints </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">widths</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">) {
 501             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">c2 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.calculateControlPoints</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[0], </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[1], </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[2], </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.c2</span><span class="jsdoc-syntax">;
 502             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">c3 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.calculateControlPoints</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[1], </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[2], </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[3], </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">)</span><span class="jsdoc-var">.c1</span><span class="jsdoc-syntax">;
 503             </span><span class="jsdoc-keyword">return new </span><span class="jsdoc-var">Bezier</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[1], </span><span class="jsdoc-var">c2</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">c3</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[2], </span><span class="jsdoc-var">widths.start</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">widths.end</span><span class="jsdoc-syntax">);
 504         };
 505         </span><span class="jsdoc-var">Bezier.calculateControlPoints </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">s1</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">s2</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">s3</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">scope</span><span class="jsdoc-syntax">) {
 506             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">dx1 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">s1.x </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">s2.x</span><span class="jsdoc-syntax">;
 507             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">dy1 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">s1.y </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">s2.y</span><span class="jsdoc-syntax">;
 508             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">dx2 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">s2.x </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">s3.x</span><span class="jsdoc-syntax">;
 509             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">dy2 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">s2.y </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">s3.y</span><span class="jsdoc-syntax">;
 510             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">m1 </span><span class="jsdoc-syntax">= { </span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-var">s1.x </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">s2.x</span><span class="jsdoc-syntax">) / 2.0, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-var">s1.y </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">s2.y</span><span class="jsdoc-syntax">) / 2.0 };
 511             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">m2 </span><span class="jsdoc-syntax">= { </span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-var">s2.x </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">s3.x</span><span class="jsdoc-syntax">) / 2.0, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-var">s2.y </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">s3.y</span><span class="jsdoc-syntax">) / 2.0 };
 512             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">l1 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.sqrt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">dx1 </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">dx1 </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">dy1 </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">dy1</span><span class="jsdoc-syntax">);
 513             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">l2 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Math.sqrt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">dx2 </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">dx2 </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">dy2 </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">dy2</span><span class="jsdoc-syntax">);
 514             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">dxm </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">m1.x </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">m2.x</span><span class="jsdoc-syntax">;
 515             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">dym </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">m1.y </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">m2.y</span><span class="jsdoc-syntax">;
 516             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">k </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">l2 </span><span class="jsdoc-syntax">/ (</span><span class="jsdoc-var">l1 </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">l2</span><span class="jsdoc-syntax">);
 517             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">cm </span><span class="jsdoc-syntax">= { </span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">m2.x </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">dxm </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">k</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">m2.y </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">dym </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">k </span><span class="jsdoc-syntax">};
 518             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">tx </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">s2.x </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">cm.x</span><span class="jsdoc-syntax">;
 519             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ty </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">s2.y </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">cm.y</span><span class="jsdoc-syntax">;
 520             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">{
 521                 </span><span class="jsdoc-var">c1</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">scope.Point</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">m1.x </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">tx</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">m1.y </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">ty</span><span class="jsdoc-syntax">),
 522                 </span><span class="jsdoc-var">c2</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">new </span><span class="jsdoc-var">scope.Point</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">m2.x </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">tx</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">m2.y </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">ty</span><span class="jsdoc-syntax">)
 523             };
 524         };
 525         </span><span class="jsdoc-var">Bezier.prototype.length </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
 526             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">steps </span><span class="jsdoc-syntax">= 10;
 527             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">length </span><span class="jsdoc-syntax">= 0;
 528             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">px</span><span class="jsdoc-syntax">;
 529             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">py</span><span class="jsdoc-syntax">;
 530             </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">= 0; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&lt;= </span><span class="jsdoc-var">steps</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">+= 1) {
 531                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">/ </span><span class="jsdoc-var">steps</span><span class="jsdoc-syntax">;
 532                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">cx </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.point</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.startPoint.x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.control1.x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.control2.x</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.endPoint.x</span><span class="jsdoc-syntax">);
 533                 </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">cy </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this.point</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.startPoint.y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.control1.y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.control2.y</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">this.endPoint.y</span><span class="jsdoc-syntax">);
 534                 </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&gt; 0) {
 535                     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">xdiff </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">cx </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">px</span><span class="jsdoc-syntax">;
 536                     </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">ydiff </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">cy </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">py</span><span class="jsdoc-syntax">;
 537                     </span><span class="jsdoc-var">length </span><span class="jsdoc-syntax">+= </span><span class="jsdoc-var">Math.sqrt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">xdiff </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">xdiff </span><span class="jsdoc-syntax">+ </span><span class="jsdoc-var">ydiff </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">ydiff</span><span class="jsdoc-syntax">);
 538                 }
 539                 </span><span class="jsdoc-var">px </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">cx</span><span class="jsdoc-syntax">;
 540                 </span><span class="jsdoc-var">py </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">cy</span><span class="jsdoc-syntax">;
 541             }
 542             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">length</span><span class="jsdoc-syntax">;
 543         };
 544         </span><span class="jsdoc-var">Bezier.prototype.point </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">c1</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">c2</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">end</span><span class="jsdoc-syntax">) {
 545             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">start </span><span class="jsdoc-syntax">* (1.0 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">) * (1.0 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">) * (1.0 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">))
 546             + (3.0 * </span><span class="jsdoc-var">c1 </span><span class="jsdoc-syntax">* (1.0 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">) * (1.0 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">) * </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">)
 547             + (3.0 * </span><span class="jsdoc-var">c2 </span><span class="jsdoc-syntax">* (1.0 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">) * </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">)
 548             + (</span><span class="jsdoc-var">end </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">);
 549         };
 550         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">Bezier</span><span class="jsdoc-syntax">;
 551     }()),
 552
 553     </span><span class="jsdoc-var">throttle</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">fn</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">wait</span><span class="jsdoc-syntax">) {
 554       </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">wait </span><span class="jsdoc-syntax">=== </span><span class="jsdoc-keyword">void </span><span class="jsdoc-syntax">0) { </span><span class="jsdoc-var">wait </span><span class="jsdoc-syntax">= 250; }
 555       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">previous </span><span class="jsdoc-syntax">= 0;
 556       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">timeout </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
 557       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">result</span><span class="jsdoc-syntax">;
 558       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">storedContext</span><span class="jsdoc-syntax">;
 559       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">storedArgs</span><span class="jsdoc-syntax">;
 560       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">later </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
 561           </span><span class="jsdoc-var">previous </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Date.now</span><span class="jsdoc-syntax">();
 562           </span><span class="jsdoc-var">timeout </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
 563           </span><span class="jsdoc-var">result </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">fn.apply</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">storedContext</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">storedArgs</span><span class="jsdoc-syntax">);
 564           </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
 565               </span><span class="jsdoc-var">storedContext </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
 566               </span><span class="jsdoc-var">storedArgs </span><span class="jsdoc-syntax">= [];
 567           }
 568       };
 569       </span><span class="jsdoc-keyword">return function </span><span class="jsdoc-var">wrapper</span><span class="jsdoc-syntax">() {
 570           </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">args </span><span class="jsdoc-syntax">= [];
 571           </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">_i </span><span class="jsdoc-syntax">= 0; </span><span class="jsdoc-var">_i </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">arguments.length</span><span class="jsdoc-syntax">; </span><span class="jsdoc-var">_i</span><span class="jsdoc-syntax">++) {
 572               </span><span class="jsdoc-var">args</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">_i</span><span class="jsdoc-syntax">] = </span><span class="jsdoc-var">arguments</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">_i</span><span class="jsdoc-syntax">];
 573           }
 574           </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">now </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Date.now</span><span class="jsdoc-syntax">();
 575           </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">remaining </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">wait </span><span class="jsdoc-syntax">- (</span><span class="jsdoc-var">now </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">previous</span><span class="jsdoc-syntax">);
 576           </span><span class="jsdoc-var">storedContext </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">;
 577           </span><span class="jsdoc-var">storedArgs </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">args</span><span class="jsdoc-syntax">;
 578           </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">remaining </span><span class="jsdoc-syntax">&lt;= 0 || </span><span class="jsdoc-var">remaining </span><span class="jsdoc-syntax">&gt; </span><span class="jsdoc-var">wait</span><span class="jsdoc-syntax">) {
 579               </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
 580                   </span><span class="jsdoc-var">clearTimeout</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">);
 581                   </span><span class="jsdoc-var">timeout </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
 582               }
 583               </span><span class="jsdoc-var">previous </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">now</span><span class="jsdoc-syntax">;
 584               </span><span class="jsdoc-var">result </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">fn.apply</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">storedContext</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">storedArgs</span><span class="jsdoc-syntax">);
 585               </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
 586                   </span><span class="jsdoc-var">storedContext </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
 587                   </span><span class="jsdoc-var">storedArgs </span><span class="jsdoc-syntax">= [];
 588               }
 589           }
 590           </span><span class="jsdoc-keyword">else if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
 591               </span><span class="jsdoc-var">timeout </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">window.setTimeout</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">later</span><span class="jsdoc-syntax">, </span><span class="jsdoc-var">remaining</span><span class="jsdoc-syntax">);
 592           }
 593           </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">result</span><span class="jsdoc-syntax">;
 594       };
 595   }
 596
 597 });
 598
 599
 600
 601  </span></code></body></html>