Simple status box for the sidebar.
[elgg_plugins.git] / yui / docs / Bezier.js.html
bloba797104b56751ea6dfecef884c483f4a17243ecd
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
2 <html>
3 <head>
4 <title>API: animation Bezier.js (YUI Library)</title>
5 <link rel="stylesheet" type="text/css" href="assets/api.css">
6 </head>
8 <body id="yahoo-com">
9 <div id="doc3" class="yui-t2">
11 <div id="hd">
12 <h1>Yahoo! UI Library</h1>
13 <h3>animation&nbsp; <span class="subtitle">2.2.0</span></h3>
14 <p>
15 <a href="./index.html">Yahoo! UI Library</a>
16 &gt; <a href="./module_animation.html">animation</a>
18 &gt; Bezier.js (source view)
19 </p>
20 </div>
22 <div id="bd">
23 <div id="yui-main">
24 <div class="yui-b">
26 <div id="srcout">
27 <div class="highlight" ><pre><span class="c">/**</span>
28 <span class="c"> * Used to calculate Bezier splines for any number of control points.</span>
29 <span class="c"> * @class Bezier</span>
30 <span class="c"> * @namespace YAHOO.util</span>
31 <span class="c"> *</span>
32 <span class="c"> */</span>
33 <span class="nx">YAHOO</span><span class="o">.</span><span class="nx">util</span><span class="o">.</span><span class="nx">Bezier</span> <span class="o">=</span> <span class="k">new</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span>
34 <span class="c">/**</span>
35 <span class="c"> * Get the current position of the animated element based on t.</span>
36 <span class="c"> * Each point is an array of &quot;x&quot; and &quot;y&quot; values (0 = x, 1 = y)</span>
37 <span class="c"> * At least 2 points are required (start and end).</span>
38 <span class="c"> * First point is start. Last point is end.</span>
39 <span class="c"> * Additional control points are optional. </span>
40 <span class="c"> * @method getPosition</span>
41 <span class="c"> * @param {Array} points An array containing Bezier points</span>
42 <span class="c"> * @param {Number} t A number between 0 and 1 which is the basis for determining current position</span>
43 <span class="c"> * @return {Array} An array containing int x and y member data</span>
44 <span class="c"> */</span>
45 <span class="k">this</span><span class="o">.</span><span class="nx">getPosition</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">points</span><span class="o">,</span> <span class="nx">t</span><span class="o">)</span> <span class="o">{</span>
46 <span class="k">var</span> <span class="nx">n</span> <span class="o">=</span> <span class="nx">points</span><span class="o">.</span><span class="nx">length</span><span class="o">;</span>
47 <span class="k">var</span> <span class="nx">tmp</span> <span class="o">=</span> <span class="o">[];</span>
49 <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">i</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="o">;</span> <span class="o">++</span><span class="nx">i</span><span class="o">){</span>
50 <span class="nx">tmp</span><span class="o">[</span><span class="nx">i</span><span class="o">]</span> <span class="o">=</span> <span class="o">[</span><span class="nx">points</span><span class="o">[</span><span class="nx">i</span><span class="o">][</span><span class="m">0</span><span class="o">],</span> <span class="nx">points</span><span class="o">[</span><span class="nx">i</span><span class="o">][</span><span class="m">1</span><span class="o">]];</span> <span class="c">// save input</span>
51 <span class="c"></span> <span class="o">}</span>
53 <span class="k">for</span> <span class="o">(</span><span class="k">var</span> <span class="nx">j</span> <span class="o">=</span> <span class="m">1</span><span class="o">;</span> <span class="nx">j</span> <span class="o">&lt;</span> <span class="nx">n</span><span class="o">;</span> <span class="o">++</span><span class="nx">j</span><span class="o">)</span> <span class="o">{</span>
54 <span class="k">for</span> <span class="o">(</span><span class="nx">i</span> <span class="o">=</span> <span class="m">0</span><span class="o">;</span> <span class="nx">i</span> <span class="o">&lt;</span> <span class="nx">n</span> <span class="o">-</span> <span class="nx">j</span><span class="o">;</span> <span class="o">++</span><span class="nx">i</span><span class="o">)</span> <span class="o">{</span>
55 <span class="nx">tmp</span><span class="o">[</span><span class="nx">i</span><span class="o">][</span><span class="m">0</span><span class="o">]</span> <span class="o">=</span> <span class="o">(</span><span class="m">1</span> <span class="o">-</span> <span class="nx">t</span><span class="o">)</span> <span class="o">*</span> <span class="nx">tmp</span><span class="o">[</span><span class="nx">i</span><span class="o">][</span><span class="m">0</span><span class="o">]</span> <span class="o">+</span> <span class="nx">t</span> <span class="o">*</span> <span class="nx">tmp</span><span class="o">[</span><span class="nb">parseInt</span><span class="o">(</span><span class="nx">i</span> <span class="o">+</span> <span class="m">1</span><span class="o">,</span> <span class="m">10</span><span class="o">)][</span><span class="m">0</span><span class="o">];</span>
56 <span class="nx">tmp</span><span class="o">[</span><span class="nx">i</span><span class="o">][</span><span class="m">1</span><span class="o">]</span> <span class="o">=</span> <span class="o">(</span><span class="m">1</span> <span class="o">-</span> <span class="nx">t</span><span class="o">)</span> <span class="o">*</span> <span class="nx">tmp</span><span class="o">[</span><span class="nx">i</span><span class="o">][</span><span class="m">1</span><span class="o">]</span> <span class="o">+</span> <span class="nx">t</span> <span class="o">*</span> <span class="nx">tmp</span><span class="o">[</span><span class="nb">parseInt</span><span class="o">(</span><span class="nx">i</span> <span class="o">+</span> <span class="m">1</span><span class="o">,</span> <span class="m">10</span><span class="o">)][</span><span class="m">1</span><span class="o">];</span>
57 <span class="o">}</span>
58 <span class="o">}</span>
60 <span class="k">return</span> <span class="o">[</span> <span class="nx">tmp</span><span class="o">[</span><span class="m">0</span><span class="o">][</span><span class="m">0</span><span class="o">],</span> <span class="nx">tmp</span><span class="o">[</span><span class="m">0</span><span class="o">][</span><span class="m">1</span><span class="o">]</span> <span class="o">];</span>
62 <span class="o">};</span>
63 <span class="o">};</span>
64 </pre></div>
65 </div>
66 </div>
67 </div>
68 <div class="yui-b">
69 <div class="nav">
71 <div class="module">
72 <h4>Modules</h4>
73 <ul class="content">
75 <li class="selected"><a href="module_animation.html">animation</a></li>
77 <li class=""><a href="module_autocomplete.html">autocomplete</a></li>
79 <li class=""><a href="module_button.html">button</a></li>
81 <li class=""><a href="module_calendar.html">calendar</a></li>
83 <li class=""><a href="module_connection.html">connection</a></li>
85 <li class=""><a href="module_container.html">container</a></li>
87 <li class=""><a href="module_datasource.html">datasource</a></li>
89 <li class=""><a href="module_datatable.html">datatable</a></li>
91 <li class=""><a href="module_dom.html">dom</a></li>
93 <li class=""><a href="module_dragdrop.html">dragdrop</a></li>
95 <li class=""><a href="module_element.html">element</a></li>
97 <li class=""><a href="module_event.html">event</a></li>
99 <li class=""><a href="module_history.html">history</a></li>
101 <li class=""><a href="module_logger.html">logger</a></li>
103 <li class=""><a href="module_menu.html">menu</a></li>
105 <li class=""><a href="module_slider.html">slider</a></li>
107 <li class=""><a href="module_tabview.html">tabview</a></li>
109 <li class=""><a href="module_treeview.html">treeview</a></li>
111 <li class=""><a href="module_yahoo.html">yahoo</a></li>
112 </ul>
113 </div>
115 <div class="module">
116 <h4>Classes</h4>
117 <ul class="content">
118 <li class=""><a href="YAHOO.util.Anim.html">YAHOO.util.Anim</a></li>
119 <li class=""><a href="YAHOO.util.AnimMgr.html">YAHOO.util.AnimMgr</a></li>
120 <li class=""><a href="YAHOO.util.Bezier.html">YAHOO.util.Bezier</a></li>
121 <li class=""><a href="YAHOO.util.ColorAnim.html">YAHOO.util.ColorAnim</a></li>
122 <li class=""><a href="YAHOO.util.Easing.html">YAHOO.util.Easing</a></li>
123 <li class=""><a href="YAHOO.util.Motion.html">YAHOO.util.Motion</a></li>
124 <li class=""><a href="YAHOO.util.Scroll.html">YAHOO.util.Scroll</a></li>
125 </ul>
126 </div>
128 <div class="module">
129 <h4>Files</h4>
130 <ul class="content">
131 <li class=""><a href="Anim.js.html">Anim.js</a></li>
132 <li class=""><a href="AnimMgr.js.html">AnimMgr.js</a></li>
133 <li class="selected"><a href="Bezier.js.html">Bezier.js</a></li>
134 <li class=""><a href="ColorAnim.js.html">ColorAnim.js</a></li>
135 <li class=""><a href="Easing.js.html">Easing.js</a></li>
136 <li class=""><a href="Motion.js.html">Motion.js</a></li>
137 <li class=""><a href="Scroll.js.html">Scroll.js</a></li>
138 </ul>
139 </div>
145 </div>
146 </div>
147 </div>
148 <div id="ft">
149 <hr />
150 Copyright &copy; 2007 Yahoo! Inc. All rights reserved.
151 </div>
152 </div>
153 </body>
154 </html>