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[roojs1] / 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     </span><span class="jsdoc-var">curve_data</span><span class="jsdoc-syntax">: [],
28
29     </span><span class="jsdoc-var">is_empty</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
30
31     </span><span class="jsdoc-var">mouse_btn_down</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">,
32
33     </span><span class="jsdoc-comment">/**
34      * @cfg {int} canvas height
35      */
36     </span><span class="jsdoc-var">canvas_height</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'200px'</span><span class="jsdoc-syntax">,
37
38     </span><span class="jsdoc-comment">/**
39      * @cfg {float|function} Radius of a single dot.
40      */
41     </span><span class="jsdoc-var">dot_size</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
42
43     </span><span class="jsdoc-comment">/**
44      * @cfg {float} Minimum width of a line. Defaults to 0.5.
45      */
46     </span><span class="jsdoc-var">min_width</span><span class="jsdoc-syntax">: 0.5,
47
48     </span><span class="jsdoc-comment">/**
49      * @cfg {float} Maximum width of a line. Defaults to 2.5.
50      */
51     </span><span class="jsdoc-var">max_width</span><span class="jsdoc-syntax">: 2.5,
52
53     </span><span class="jsdoc-comment">/**
54      * @cfg {integer} Draw the next point at most once per every x milliseconds. Set it to 0 to turn off throttling. Defaults to 16.
55      */
56     </span><span class="jsdoc-var">throttle</span><span class="jsdoc-syntax">: 16,
57
58     </span><span class="jsdoc-comment">/**
59      * @cfg {integer} Add the next point only if the previous one is farther than x pixels. Defaults to 5.
60      */
61     </span><span class="jsdoc-var">min_distance</span><span class="jsdoc-syntax">: 5,
62
63     </span><span class="jsdoc-comment">/**
64      * @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.
65      */
66     </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">,
67
68     </span><span class="jsdoc-comment">/**
69      * @cfg {string} Color used to draw the lines. Can be any color format accepted by context.fillStyle. Defaults to &quot;black&quot;.
70      */
71     </span><span class="jsdoc-var">dot_color</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'black'</span><span class="jsdoc-syntax">,
72
73     </span><span class="jsdoc-comment">/**
74      * @cfg {float} Weight used to modify new velocity based on the previous velocity. Defaults to 0.7.
75      */
76     </span><span class="jsdoc-var">velocity_filter_weight</span><span class="jsdoc-syntax">: 0.7,
77
78     </span><span class="jsdoc-comment">/**
79      * @cfg {function} Callback when stroke begin.
80      */
81     </span><span class="jsdoc-var">onBegin</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
82
83     </span><span class="jsdoc-comment">/**
84      * @cfg {function} Callback when stroke end.
85      */
86     </span><span class="jsdoc-var">onEnd</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">,
87
88     </span><span class="jsdoc-var">getAutoCreate </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
89     {
90         </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">;
91
92         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.cls</span><span class="jsdoc-syntax">){
93             </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">;
94         }
95
96         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">col_sizes </span><span class="jsdoc-syntax">= [
97             </span><span class="jsdoc-string">'lg'</span><span class="jsdoc-syntax">,
98             </span><span class="jsdoc-string">'md'</span><span class="jsdoc-syntax">,
99             </span><span class="jsdoc-string">'sm'</span><span class="jsdoc-syntax">,
100             </span><span class="jsdoc-string">'xs'
101         </span><span class="jsdoc-syntax">];
102
103         </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">++) {
104             </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">]]) {
105                 </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">]];
106             }
107         }
108
109         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">cfg </span><span class="jsdoc-syntax">= {
110             </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'div'</span><span class="jsdoc-syntax">,
111             </span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">,
112             </span><span class="jsdoc-var">cn</span><span class="jsdoc-syntax">: [
113                 {
114                     </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'div'</span><span class="jsdoc-syntax">,
115                     </span><span class="jsdoc-var">cls</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'roo-signature-body'</span><span class="jsdoc-syntax">,
116                     </span><span class="jsdoc-var">cn</span><span class="jsdoc-syntax">: [
117                         {
118                             </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'canvas'</span><span class="jsdoc-syntax">,
119                             </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">,
120                             </span><span class="jsdoc-var">height</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.canvas_height</span><span class="jsdoc-syntax">,
121                             </span><span class="jsdoc-var">width</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.canvas_width
122                         </span><span class="jsdoc-syntax">}
123                     ]
124                 },
125                 {
126                     </span><span class="jsdoc-var">tag</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'input'</span><span class="jsdoc-syntax">,
127                     </span><span class="jsdoc-var">type</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'file'</span><span class="jsdoc-syntax">,
128                     </span><span class="jsdoc-var">style</span><span class="jsdoc-syntax">: </span><span class="jsdoc-string">'display: none'
129                 </span><span class="jsdoc-syntax">}
130             ]
131         };
132
133         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">cfg</span><span class="jsdoc-syntax">;
134     },
135
136     </span><span class="jsdoc-var">initEvents</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
137     {
138         </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">);
139
140         </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">();
141
142         </span><span class="jsdoc-comment">// mouse &amp;&amp; touch event swapping...
143         </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">;
144         </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">;
145
146         </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">;
147         </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">);
148         </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">);
149         </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">);
150
151         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">window.PointerEvent</span><span class="jsdoc-syntax">) {
152             </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">);
153             </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">);
154             </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">);
155         }
156
157         </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">) {
158             </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">);
159             </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">);
160             </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">);
161         }
162
163         </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">);
164
165         </span><span class="jsdoc-comment">// file input event
166         </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">);
167
168         </span><span class="jsdoc-var">this.clear</span><span class="jsdoc-syntax">();
169
170         </span><span class="jsdoc-var">this.resize</span><span class="jsdoc-syntax">();
171     },
172
173     </span><span class="jsdoc-var">resize</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
174
175         </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">;
176         </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">();
177         </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">;
178
179         </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) {
180             </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">);
181         }
182         </span><span class="jsdoc-comment">// setting canvas width will clean img data
183         </span><span class="jsdoc-var">canvas.width </span><span class="jsdoc-syntax">= 0;
184
185         </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">?
186             </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">;
187
188         </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;
189         </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;
190
191         </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">;
192
193         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">img_data</span><span class="jsdoc-syntax">) {
194             </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);
195         }
196     },
197
198     </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">)
199     {
200         </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) {
201             </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">;
202             </span><span class="jsdoc-var">this.strokeBegin</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
203         }
204     },
205
206     </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">)
207     {
208         </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">) {
209             </span><span class="jsdoc-var">this.strokeMoveUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
210         }
211     },
212
213     </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">)
214     {
215         </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">) {
216             </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">;
217             </span><span class="jsdoc-var">this.strokeEnd</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
218         }
219     },
220
221     </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">) {
222
223         </span><span class="jsdoc-var">e.preventDefault</span><span class="jsdoc-syntax">();
224         </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) {
225             </span><span class="jsdoc-comment">// var touch = e.browserEvent.changedTouches[0];
226             // this.strokeBegin(touch);
227
228              </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...
229         </span><span class="jsdoc-syntax">}
230     },
231
232     </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">) {
233         </span><span class="jsdoc-var">e.preventDefault</span><span class="jsdoc-syntax">();
234         </span><span class="jsdoc-comment">// var touch = event.targetTouches[0];
235         // _this._strokeMoveUpdate(touch);
236         </span><span class="jsdoc-var">this.strokeMoveUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
237     },
238
239     </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">) {
240         </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">;
241         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">wasCanvasTouched</span><span class="jsdoc-syntax">) {
242             </span><span class="jsdoc-var">e.preventDefault</span><span class="jsdoc-syntax">();
243             </span><span class="jsdoc-comment">// var touch = event.changedTouches[0];
244             // _this._strokeEnd(touch);
245             </span><span class="jsdoc-var">this.strokeEnd</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
246         }
247     },
248
249     </span><span class="jsdoc-var">reset</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
250         </span><span class="jsdoc-var">this._lastPoints </span><span class="jsdoc-syntax">= [];
251         </span><span class="jsdoc-var">this._lastVelocity </span><span class="jsdoc-syntax">= 0;
252         </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;
253         </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">;
254     },
255
256     </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">)
257     {
258         </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
259
260         </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.throttle</span><span class="jsdoc-syntax">) {
261             </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">);
262         }
263         </span><span class="jsdoc-keyword">else </span><span class="jsdoc-syntax">{
264             </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
265         }
266     },
267
268     </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">)
269     {
270         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">newPointGroup </span><span class="jsdoc-syntax">= {
271             </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this.dot_color</span><span class="jsdoc-syntax">,
272             </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">: []
273         };
274
275         </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">) {
276             </span><span class="jsdoc-var">this.onBegin</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
277         }
278
279         </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">);
280         </span><span class="jsdoc-var">this.reset</span><span class="jsdoc-syntax">();
281         </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
282     },
283
284     </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">)
285     {
286         </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">();
287         </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">());
288         </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];
289         </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">;
290         </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];
291         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">isLastPointTooClose </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">lastPoint
292             </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
293             </span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
294         </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">;
295         </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">)) {
296             </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">);
297             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">lastPoint</span><span class="jsdoc-syntax">) {
298                 </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">});
299             }
300             </span><span class="jsdoc-keyword">else if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">curve</span><span class="jsdoc-syntax">) {
301                 </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">});
302             }
303             </span><span class="jsdoc-var">lastPoints.push</span><span class="jsdoc-syntax">({
304                 </span><span class="jsdoc-var">time</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">point.time</span><span class="jsdoc-syntax">,
305                 </span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">point.x</span><span class="jsdoc-syntax">,
306                 </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">point.y
307             </span><span class="jsdoc-syntax">});
308         }
309     },
310
311     </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">)
312     {
313         </span><span class="jsdoc-var">this.strokeUpdate</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
314         </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">) {
315             </span><span class="jsdoc-var">this.onEnd</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">e</span><span class="jsdoc-syntax">);
316         }
317     },
318
319     </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">) {
320         </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">;
321         </span><span class="jsdoc-var">_lastPoints.push</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">point</span><span class="jsdoc-syntax">);
322         </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) {
323             </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_lastPoints.length </span><span class="jsdoc-syntax">=== 3) {
324                 </span><span class="jsdoc-var">_lastPoints.unshift</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">_lastPoints</span><span class="jsdoc-syntax">[0]);
325             }
326             </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]);
327             </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">);
328             </span><span class="jsdoc-var">_lastPoints.shift</span><span class="jsdoc-syntax">();
329             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">curve</span><span class="jsdoc-syntax">;
330         }
331         </span><span class="jsdoc-keyword">return null</span><span class="jsdoc-syntax">;
332     },
333
334     </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">) {
335         </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">) +
336             (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">;
337
338         </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">);
339         </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">widths </span><span class="jsdoc-syntax">= {
340             </span><span class="jsdoc-var">end</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">newWidth</span><span class="jsdoc-syntax">,
341             </span><span class="jsdoc-var">start</span><span class="jsdoc-syntax">: </span><span class="jsdoc-var">this._lastWidth
342         </span><span class="jsdoc-syntax">};
343
344         </span><span class="jsdoc-var">this._lastVelocity </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">velocity</span><span class="jsdoc-syntax">;
345         </span><span class="jsdoc-var">this._lastWidth </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">newWidth</span><span class="jsdoc-syntax">;
346         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">widths</span><span class="jsdoc-syntax">;
347     },
348
349     </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">) {
350         </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">;
351         </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">();
352         </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">;
353         </span><span class="jsdoc-var">ctx.beginPath</span><span class="jsdoc-syntax">();
354         </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">);
355         </span><span class="jsdoc-var">ctx.closePath</span><span class="jsdoc-syntax">();
356         </span><span class="jsdoc-var">ctx.fillStyle </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">;
357         </span><span class="jsdoc-var">ctx.fill</span><span class="jsdoc-syntax">();
358     },
359
360     </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">) {
361         </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">;
362         </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">();
363         </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">;
364         </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;
365         </span><span class="jsdoc-var">ctx.beginPath</span><span class="jsdoc-syntax">();
366         </span><span class="jsdoc-var">ctx.fillStyle </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">color</span><span class="jsdoc-syntax">;
367         </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) {
368         </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">;
369         </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">;
370         </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">;
371         </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">;
372         </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">;
373         </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">;
374         </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">;
375         </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">;
376         </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">;
377         </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">;
378         </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">;
379         </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">;
380         </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">;
381         </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">;
382         </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">;
383         </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">);
384         }
385         </span><span class="jsdoc-var">ctx.closePath</span><span class="jsdoc-syntax">();
386         </span><span class="jsdoc-var">ctx.fill</span><span class="jsdoc-syntax">();
387     },
388
389     </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">) {
390         </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">();
391         </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">);
392         </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">);
393         </span><span class="jsdoc-var">this.is_empty </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
394     },
395
396     </span><span class="jsdoc-var">clear</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
397     {
398         </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">();
399         </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">;
400         </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">;
401         </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">);
402         </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">);
403         </span><span class="jsdoc-var">this.curve_data </span><span class="jsdoc-syntax">= [];
404         </span><span class="jsdoc-var">this.reset</span><span class="jsdoc-syntax">();
405         </span><span class="jsdoc-var">this.is_empty </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">true</span><span class="jsdoc-syntax">;
406     },
407
408     </span><span class="jsdoc-var">fileEl</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
409     {
410         </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">();
411     },
412
413     </span><span class="jsdoc-var">canvasEl</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
414     {
415         </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">();
416     },
417
418     </span><span class="jsdoc-var">canvasElCtx</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
419     {
420         </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">);
421     },
422
423     </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">)
424     {
425         </span><span class="jsdoc-keyword">if</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this.is_empty</span><span class="jsdoc-syntax">) {
426             </span><span class="jsdoc-keyword">return false</span><span class="jsdoc-syntax">;
427         }
428
429         </span><span class="jsdoc-comment">// encryption ?
430         </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);
431     },
432
433     </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">)
434     {
435         </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">();
436
437         </span><span class="jsdoc-var">img.onload </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
438             </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);
439         }</span><span class="jsdoc-var">.bind</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
440
441         </span><span class="jsdoc-var">img.src </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">img_src</span><span class="jsdoc-syntax">;
442
443         </span><span class="jsdoc-var">this.is_empty </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">false</span><span class="jsdoc-syntax">;
444     },
445
446     </span><span class="jsdoc-var">selectImage</span><span class="jsdoc-syntax">: </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">()
447     {
448         </span><span class="jsdoc-var">this.fileEl</span><span class="jsdoc-syntax">()</span><span class="jsdoc-var">.dom.click</span><span class="jsdoc-syntax">();
449     },
450
451     </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">)
452     {
453         </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">();
454
455         </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">){
456             </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">();
457             </span><span class="jsdoc-var">img.onload </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function</span><span class="jsdoc-syntax">(){
458                 </span><span class="jsdoc-var">this.reset</span><span class="jsdoc-syntax">();
459                 </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);
460             }</span><span class="jsdoc-var">.bind</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
461             </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">;
462         }</span><span class="jsdoc-var">.bind</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">);
463
464         </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]);
465     },
466
467     </span><span class="jsdoc-comment">// Bezier Point Constructor
468     </span><span class="jsdoc-var">Point</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
469         </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">) {
470             </span><span class="jsdoc-var">this.x </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">x</span><span class="jsdoc-syntax">;
471             </span><span class="jsdoc-var">this.y </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">y</span><span class="jsdoc-syntax">;
472             </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">();
473         }
474         </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">) {
475             </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));
476         };
477         </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">) {
478             </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">;
479         };
480         </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">) {
481             </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
482             </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">)
483             : 0;
484         };
485         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">Point</span><span class="jsdoc-syntax">;
486     }()),
487
488
489     </span><span class="jsdoc-comment">// Bezier Constructor
490     </span><span class="jsdoc-var">Bezier</span><span class="jsdoc-syntax">: (</span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
491         </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">) {
492             </span><span class="jsdoc-var">this.startPoint </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">startPoint</span><span class="jsdoc-syntax">;
493             </span><span class="jsdoc-var">this.control2 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">control2</span><span class="jsdoc-syntax">;
494             </span><span class="jsdoc-var">this.control1 </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">control1</span><span class="jsdoc-syntax">;
495             </span><span class="jsdoc-var">this.endPoint </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">endPoint</span><span class="jsdoc-syntax">;
496             </span><span class="jsdoc-var">this.startWidth </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">startWidth</span><span class="jsdoc-syntax">;
497             </span><span class="jsdoc-var">this.endWidth </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">endWidth</span><span class="jsdoc-syntax">;
498         }
499         </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">) {
500             </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">;
501             </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">;
502             </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">);
503         };
504         </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">) {
505             </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">;
506             </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">;
507             </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">;
508             </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">;
509             </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 };
510             </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 };
511             </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">);
512             </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">);
513             </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">;
514             </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">;
515             </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">);
516             </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">};
517             </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">;
518             </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">;
519             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">{
520                 </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">),
521                 </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">)
522             };
523         };
524         </span><span class="jsdoc-var">Bezier.prototype.length </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">function </span><span class="jsdoc-syntax">() {
525             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">steps </span><span class="jsdoc-syntax">= 10;
526             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">length </span><span class="jsdoc-syntax">= 0;
527             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">px</span><span class="jsdoc-syntax">;
528             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">py</span><span class="jsdoc-syntax">;
529             </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) {
530                 </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">;
531                 </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">);
532                 </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">);
533                 </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">&gt; 0) {
534                     </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">;
535                     </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">;
536                     </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">);
537                 }
538                 </span><span class="jsdoc-var">px </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">cx</span><span class="jsdoc-syntax">;
539                 </span><span class="jsdoc-var">py </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">cy</span><span class="jsdoc-syntax">;
540             }
541             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">length</span><span class="jsdoc-syntax">;
542         };
543         </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">) {
544             </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">))
545             + (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">)
546             + (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">)
547             + (</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">);
548         };
549         </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">Bezier</span><span class="jsdoc-syntax">;
550     }()),
551
552     </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">) {
553       </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; }
554       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">previous </span><span class="jsdoc-syntax">= 0;
555       </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">;
556       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">result</span><span class="jsdoc-syntax">;
557       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">storedContext</span><span class="jsdoc-syntax">;
558       </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">storedArgs</span><span class="jsdoc-syntax">;
559       </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">() {
560           </span><span class="jsdoc-var">previous </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">Date.now</span><span class="jsdoc-syntax">();
561           </span><span class="jsdoc-var">timeout </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
562           </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">);
563           </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
564               </span><span class="jsdoc-var">storedContext </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
565               </span><span class="jsdoc-var">storedArgs </span><span class="jsdoc-syntax">= [];
566           }
567       };
568       </span><span class="jsdoc-keyword">return function </span><span class="jsdoc-var">wrapper</span><span class="jsdoc-syntax">() {
569           </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">args </span><span class="jsdoc-syntax">= [];
570           </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">++) {
571               </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">];
572           }
573           </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">();
574           </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">);
575           </span><span class="jsdoc-var">storedContext </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">this</span><span class="jsdoc-syntax">;
576           </span><span class="jsdoc-var">storedArgs </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">args</span><span class="jsdoc-syntax">;
577           </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">) {
578               </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
579                   </span><span class="jsdoc-var">clearTimeout</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">);
580                   </span><span class="jsdoc-var">timeout </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
581               }
582               </span><span class="jsdoc-var">previous </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">now</span><span class="jsdoc-syntax">;
583               </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">);
584               </span><span class="jsdoc-keyword">if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
585                   </span><span class="jsdoc-var">storedContext </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">null</span><span class="jsdoc-syntax">;
586                   </span><span class="jsdoc-var">storedArgs </span><span class="jsdoc-syntax">= [];
587               }
588           }
589           </span><span class="jsdoc-keyword">else if </span><span class="jsdoc-syntax">(!</span><span class="jsdoc-var">timeout</span><span class="jsdoc-syntax">) {
590               </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">);
591           }
592           </span><span class="jsdoc-keyword">return </span><span class="jsdoc-var">result</span><span class="jsdoc-syntax">;
593       };
594   }
595
596 });
597
598
599
600  </span></code></body></html>
RooJS - Version 1