Sophie: qt4-doc-4:4.6.3-0.2mdv2010.2 i586

qt4-doc-4.6.3-0.2mdv2010.2.i586.rpm

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html
    PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <title>Qt 4.6: plasma.js Example File (script/context2d/scripts/plasma.js)</title>
  <link href="classic.css" rel="stylesheet" type="text/css" />
</head>
<body>
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="left" valign="top" width="32"><a href="http://qt.nokia.com/"><img src="images/qt-logo.png" align="left" border="0" /></a></td>
<td width="1">&nbsp;&nbsp;</td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a>&nbsp;&middot; <a href="classes.html"><font color="#004faf">All&nbsp;Classes</font></a>&nbsp;&middot; <a href="functions.html"><font color="#004faf">All&nbsp;Functions</font></a>&nbsp;&middot; <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">plasma.js Example File<br /><span class="small-subtitle">script/context2d/scripts/plasma.js</span>
</h1>
<pre> var counter = 0;

 var PIXEL_SIZE = 4;

 var temp_1 = 0;

 function init()
 {
     setInterval('render()',50);
 }

 function dist(a, b, c, d)
 {
     return Math.sqrt((a - c) * (a - c) + (b - d) * (b - d));
 }

 function render()
 {
     var canvas = document.getElementById('tutorial');
     canvas.resize(128, 128);
     var ctx = canvas.getContext('2d');
     ctx.save();

     var time = counter * 5;

     for( y = 0; y &lt; 128; y+=PIXEL_SIZE) {
         for( x = 0 ; x &lt; 128; x+=PIXEL_SIZE) {

             var temp_val = Math.floor(Math.sin(dist(x + time, y, 128.0, 128.0) / 8.0)
                                       + Math.sin(dist(x, y, 64.0, 64.0) / 8.0)
                                       + Math.sin(dist(x, y + time / 7, 192.0, 64) / 7.0)
                                       + Math.sin(dist(x, y, 192.0, 100.0) / 8.0));

             var temp_col = Math.floor((2 + temp_val) * 50);

             var rand_red = temp_col * 3;
             var rand_green = temp_col  ;
             var rand_blue = 128 - temp_col;

             ctx.fillStyle = &quot;rgb(&quot;+rand_red+&quot;,&quot;+rand_green+&quot;,&quot;+rand_blue+&quot;)&quot;;

             ctx.fillRect(x,y,PIXEL_SIZE,PIXEL_SIZE);
         }
     }

     ctx.restore();
     counter++;

 }

 init();</pre>
<p /><address><hr /><div align="center">
<table width="100%" cellspacing="0" border="0"><tr class="address">
<td width="40%" align="left">Copyright &copy; 2010 Nokia Corporation and/or its subsidiary(-ies)</td>
<td width="20%" align="center"><a href="trademarks.html">Trademarks</a></td>
<td width="40%" align="right"><div align="right">Qt 4.6.3</div></td>
</tr></table></div></address></body>
</html>