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   1 <html><head><title>/home/edward/gitlive/roojs1/Roo/lib/Beizer.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  * Portions of this file are based on pieces of Yahoo User Interface Library
   3  * Copyright (c) 2007, Yahoo! Inc. All rights reserved.
   4  * YUI licensed under the BSD License:
   5  * http://developer.yahoo.net/yui/license.txt
   6  * &lt;script type=&quot;text/javascript&quot;&gt;
   7  *
   8  */
   9 </span><span class="jsdoc-var">Roo.lib.Bezier </span><span class="jsdoc-syntax">= </span><span class="jsdoc-keyword">new function</span><span class="jsdoc-syntax">() {
  10
  11         </span><span class="jsdoc-var">this.getPosition </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">t</span><span class="jsdoc-syntax">) {
  12             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">n </span><span class="jsdoc-syntax">= </span><span class="jsdoc-var">points.length</span><span class="jsdoc-syntax">;
  13             </span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">tmp </span><span class="jsdoc-syntax">= [];
  14
  15             </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">n</span><span class="jsdoc-syntax">; ++</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">) {
  16                 </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">] = [</span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][0], </span><span class="jsdoc-var">points</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][1]];
  17             }
  18
  19             </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</span><span class="jsdoc-keyword">var </span><span class="jsdoc-var">j </span><span class="jsdoc-syntax">= 1; </span><span class="jsdoc-var">j </span><span class="jsdoc-syntax">&lt; </span><span class="jsdoc-var">n</span><span class="jsdoc-syntax">; ++</span><span class="jsdoc-var">j</span><span class="jsdoc-syntax">) {
  20                 </span><span class="jsdoc-keyword">for </span><span class="jsdoc-syntax">(</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">n </span><span class="jsdoc-syntax">- </span><span class="jsdoc-var">j</span><span class="jsdoc-syntax">; ++</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">) {
  21                     </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][0] = (1 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">) * </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][0] + </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">parseInt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">+ 1, 10)][0];
  22                     </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][1] = (1 - </span><span class="jsdoc-var">t</span><span class="jsdoc-syntax">) * </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">i</span><span class="jsdoc-syntax">][1] + </span><span class="jsdoc-var">t </span><span class="jsdoc-syntax">* </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[</span><span class="jsdoc-var">parseInt</span><span class="jsdoc-syntax">(</span><span class="jsdoc-var">i </span><span class="jsdoc-syntax">+ 1, 10)][1];
  23                 }
  24             }
  25
  26             </span><span class="jsdoc-keyword">return </span><span class="jsdoc-syntax">[ </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[0][0], </span><span class="jsdoc-var">tmp</span><span class="jsdoc-syntax">[0][1] ];
  27
  28         };
  29     };</span></code></body></html>