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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<title>plasma</title>
<meta http-equiv="content-type" content="text/html;charset=ISO-8859-1">
<meta http-equiv="content-language" content="en">
<meta name="description" content="javascript+canvas plasma">
<meta name="keywords" content="javascript,canvas,dhtml,ajax,web,design,google,chrome,experiment,dev,code">
<meta name="author" content="REZ">
<meta name="generator" content="REZ">
<meta name="version" content="0.1">
<meta name="copyright" content="REZ 2009">
<meta name="robots" content="all">
<meta name="viewport" content="width=device-width,user-scalable=0,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0">
<style type="text/css">
body {margin:0;padding:0;background-color:#000000;font-size:0;overflow:hidden}
div {margin:0;padding:0;position:absolute;font-size:0;overflow:hidden}
canvas{background-color:#000000;overflow:hidden}
</style>
</head>
<script type="text/javascript">
var google_ad_client='pub-5142607733332317';
var google_ad_slot='7763889105';
var google_ad_width=468;
var google_ad_height=15;
</script>
<script type="text/javascript">
function $i(id) { return document.getElementById(id); }
function $r(parent,child) { (document.getElementById(parent)).removeChild(document.getElementById(child)); }
function $t(name) { return document.getElementsByTagName(name); }
function $c(code) { return String.fromCharCode(code); }
function $h(value) { return ('0'+Math.max(0,Math.min(255,Math.round(value))).toString(16)).slice(-2); }
function _i(id,value) { $t('div')[id].innerHTML+=value; }
function _h(value) { return !hires?value:Math.round(value/2); }
function get_screen_size()
{
var w=document.documentElement.clientWidth;
var h=document.documentElement.clientHeight;
return Array(w,h);
}
var flag=true;
var url=document.location.href;
var n=parseInt((url.indexOf('n=')!=-1)?url.substring(url.indexOf('n=')+2,((url.substring(url.indexOf('n=')+2,url.length)).indexOf('&')!=-1)?url.indexOf('n=')+2+(url.substring(url.indexOf('n=')+2,url.length)).indexOf('&'):url.length):32);
var n1=Math.ceil(n/4*3);
var n2=Math.ceil(n/8);
var x=0;
var y=0;
var w=0;
var h=0;
var p_w=0;
var p_h=0;
var c_r=128;
var c_g=128;
var c_b=128;
var c_rgb=128;
var context;
var key;
var timeout;
var fps=20;
var radius=64;
var angle=Math.PI/180;
var angle_ratio=angle/n;
var a=0;
var b=0;
var c=0;
var d=0;
var angle1=1;
var angle2=1;
var angle3=1;
var angle4=1;
var angle5=1;
var angle6=1;
var k=0;
var l=0;
function init()
{
var plasma=$i('plasma');
plasma.style.position='absolute';
context=plasma.getContext('2d');
randomize();
resize();
anim();
}
function anim()
{
for(var i=0;i<n;i++)
{
a+=0.0005*Math.cos(angle*i*angle1);
c+=0.001*Math.sin(angle*(n-i)*angle3);
for(var j=0;j<n;j++)
{
b+=0.001*Math.cos(angle*j*angle2);
d+=0.0005*Math.sin(angle*(n-j)*angle4);
var a_a=i*8*Math.sin(angle*(a+b)*angle5);
var a_b=j*8*Math.cos(angle*(c+d)*angle6);
var a_c=(i*angle1+j*angle2)*32*Math.sin(angle*((n-i)*a_a+(j-n)*a_b)*angle3/720);
var a_d=((n*angle4-i*angle4)+(n*angle5-j*angle5))*32*Math.sin(angle*(i*a_a+j*a_b)*angle6/720);
var a1=48*Math.cos(angle*a_c);
var a2=48*Math.cos(angle*a_d);
var a3=48*Math.cos(angle*a_a);
var a4=48*Math.cos(angle*a_b);
c_r=128+Math.floor(a1+a3+a4);
c_b=128+Math.floor(a2+a3+a4);
c_g=Math.round((c_r+c_b)/2-(a3*2+a4*2));
context.fillStyle='rgb('+c_r+','+c_g+','+c_b+')';
context.fillRect(j*p_w,i*p_h,p_w,p_h);
/*if(i==0||i==n1-1)
{
c_rgb=Math.round((c_r+c_g+c_b)/4);
context.fillStyle='rgb('+c_rgb+','+c_rgb+','+c_rgb+')';
if(i==0) context.fillRect(j*p_w,0,p_w,(n2)*p_h);
if(i==n1-1) context.fillRect(j*p_w,(n2+n1)*p_h,p_w,(n2)*p_h);
}*/
}
}
timeout=setTimeout('anim()',fps);
}
function randomize()
{
angle1=Math.round(Math.random(0,1)*3+1);
angle2=Math.round(Math.random(0,1)*3+1);
angle3=Math.round(Math.random(0,1)*3+1);
angle4=Math.round(Math.random(0,1)*3+1);
angle5=Math.round(Math.random(0,1)*3+1);
angle6=Math.round(Math.random(0,1)*3+1);
}
function key_manager(evt)
{
evt=evt||event;
key=evt.which||evt.keyCode;
switch(key)
{
case 27: case 13:
flag=flag?false:true;
if(flag)
timeout=setTimeout('anim()',fps);
else
clearTimeout(timeout);
break;
case 32:
randomize();
break;
}
//top.status='key='+((key<100)?'0':'')+((key<10)?'0':'')+key;
}
function key_release()
{
switch(key)
{
case 27: case 13: case 32:
break;
}
}
function mouse_wheel(evt)
{
evt=evt||event;
var delta=0;
if(evt.wheelDelta)
{
delta=evt.wheelDelta/120;
}
else if(evt.detail)
{
delta=-evt.detail/3;
}
radius+=(delta>=0)?-2:2;
if(evt.preventDefault) evt.preventDefault();
}
function resize()
{
w=get_screen_size()[0];
h=get_screen_size()[1]-15;
p_w=Math.ceil(w/n);
p_h=Math.ceil(h/n);
var plasma=$i('plasma');
plasma.width=w;
plasma.height=h;
var adsense=$i('adsense');
adsense.style.position='absolute';
adsense.style.left='0px';
adsense.style.top=h+'px';
adsense.style.width=468+'px';
adsense.style.height=15+'px';
adsense.style.display='block';
}
document.onkeypress=key_manager;
document.onkeyup=key_release;
document.onmousewheel=mouse_wheel; if(window.addEventListener) window.addEventListener('DOMMouseScroll',mouse_wheel,false);
</script>
<body onload="init()" onresize="resize()" onorientationchange="resize()" style="background-color:#304050">
<canvas id="plasma" style="background-color:#304050;cursor:pointer" onclick="randomize()"></canvas>
<div id="adsense" style="background-color:#304050;display:none"><script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script></div>
</body>
<script type="text/javascript" src="http://www.google-analytics.com/urchin.js"></script>
<script type="text/javascript"> var _uacct='UA-241365-1'; urchinTracker(); </script>
</html>