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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>dot landscape</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 dot landscape">
<meta name="keywords" content="landscape,dot,3d,effect,javascript,canvas,dhtml,webdesign,google,chrome,experiment,demo,code">
<meta name="author" content="REZ">
<meta name="generator" content="REZ">
<meta name="version" content="0.4">
<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">
.lnk1 {font:bold 11px/100% verdana;color:#a0a0a0;letter-spacing:-1px;text-shadow:#707070 0px 0px 4px}
.lnk2 {font:bold 11px/100% verdana;color:#ffffff;letter-spacing:-1px;text-shadow:#70e0ff 0px 0px 4px}
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}
.bar {background-color:#404040;height:5px}
canvas{background-color:#000000;overflow:hidden}
</style>
</head>
<script type="text/javascript">
google_ad_client='pub-5142607733332317';
google_ad_slot='7763889105';
google_ad_width=468;
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 url=document.location.href;
var flag=true;
var test=true;
var n1=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):64);
var n2=n1;
var w=0;
var h=0;
var x=0;
var y=0;
var z=0;
var p_x=0;
var p_y=0;
var star_ratio=512+256;
var star_color_ratio=0;
var star_speed=0;
var star=new Array(n1*n2);
var color_r,color_g,color_b;
var dot_w=24;
var cursor_x=0;
var cursor_y=0;
var mouse_x=0;
var mouse_y=0;
var context;
var sky;
var sun;
var fog;
var style=Array('positive','negative','crater','cloud','waves','flat');
var style_id=style.length;
var key;
var timeout;
var fps=20;
var angle=Math.PI/180;
var angle1=1;
var angle2=3;
var angle3=2;
var angle4=2;
var start_a=0;
var start_b=45;
var start_c=90;
var start_d=135;
var a=start_a;
var b=start_b;
var c=start_c;
var d=start_d;
function init()
{
clearTimeout(timeout);
var k=0;
var radius=h/24;
a=start_a;
c=start_b;
for(var i=0;i<n1;i++)
{
b=start_b;
d=start_d;
for(var j=0;j<n2;j++)
{
var val=radius*Math.sin(angle*(a+c))+(radius/2)*Math.cos(angle*c)+radius*Math.cos(angle*(b+d))+(radius/2)*Math.sin(angle*d);
star[k]=new Array(5);
star[k][0]=w/n1*j-x;//+((i%2==0)?-(w/2)/n1:0);
star[k][1]=y-h/4;
switch(style_id)
{
case 0: color_r=255; color_g=255; color_b=255; star[k][1]+=(val<0)?val:0; break;
case 1: color_r=255; color_g=255; color_b=255; star[k][1]+=(val>0)?val:0; break;
case 2: color_r=176; color_g=144; color_b=160; star[k][1]+=(val<0)?((val>-radius/2)?val:radius/2):0; break;
case 3: color_r=255; color_g=176; color_b=64; star[k][1]+=(val<0)?((val>-radius)?0:-radius*1.5):0; break;
case 4: color_r=64; color_g=128; color_b=192; star[k][1]+=radius/2*Math.cos(angle*(d/2+c*2)); break;
case 5: color_r=128; color_g=160; color_b=96; star[k][0]+=Math.random(0,1)*radius/2; break;
}
star[k][1]+=Math.random(0,1)*radius/8;
star[k][2]=z/n1*i+((j%2==0)?-(z/2)/n1:0); if(star[k][2]<0) star[k][2]+=z;
star[k][3]=0;
star[k][4]=0;
b+=360*angle2/n2;
d+=360*angle4/n2;
k++;
}
a+=360*angle1/n1;
c+=360*angle3/n2;
}
var starfield=$i('starfield');
starfield.style.position='absolute';
starfield.width=w;
starfield.height=h;
context=starfield.getContext('2d');
context.globalAlpha=0.5;
sky=context.createLinearGradient(0,0,0,h);
sky.addColorStop(0,'rgb(0,0,0)');
sky.addColorStop(0.025,'rgb(0,128,192)');
sky.addColorStop(0.17,'rgb(192,232,240)');
sky.addColorStop(0.18,'rgb(255,255,255)');
sky.addColorStop(0.2,'rgb(80,64,128)');
sky.addColorStop(0.3,'rgb(64,32,80)');
sky.addColorStop(0.975,'rgb(24,32,16)');
sky.addColorStop(1,'rgb(8,0,16)');
fog=context.createRadialGradient(x,0,0,x,0,h);
fog.addColorStop(0,'rgba(255,255,255,0)');
fog.addColorStop(0.1,'rgba(255,96,160,0.2)');
fog.addColorStop(0.4,'rgba(255,224,128,0.5)');
fog.addColorStop(0.6,'rgba('+Math.round((color_r+255)/2)+','+Math.round((color_g+224)/2)+','+Math.round((color_b+128)/2)+',0.5)');
fog.addColorStop(0.8,'rgba('+color_r+','+color_g+','+color_b+',0.5)');
fog.addColorStop(1,'rgba('+color_r+','+color_g+','+color_b+',0)');
sun=context.createRadialGradient(x,h/10,0,x,h/10,h*0.1);
sun.addColorStop(0,'rgb(255,255,255)');
sun.addColorStop(0.1,'rgb(255,255,255)');
sun.addColorStop(0.2,'rgba(255,232,144,0.75)');
sun.addColorStop(1,'rgba(255,255,255,0)');
}
function anim()
{
mouse_x=(cursor_x-x)/32;
context.fillStyle=sky;
context.fillRect(0,0,w,h);
context.fillStyle=sun;
context.fillRect(0,0,w,h);
context.fillStyle=fog;
var k=0;
for(var i=0;i<n1;i++)
{
var dot_size=dot_w-star[k][2]*star_color_ratio;
for(var j=0;j<n2;j++)
{
test=true;
star[k][0]+=mouse_x; if(star[k][0]>x) { star[k][0]-=w; test=false; } if(star[k][0]<-x) { star[k][0]+=w; test=false; }
star[k][2]-=star_speed; if(star[k][2]>z) { star[k][2]-=z; test=false; } if(star[k][2]<0) { star[k][2]+=z; test=false; }
star[k][3]=x+star[k][0]/star[k][2]*star_ratio;
star[k][4]=horizon+star[k][1]/star[k][2]*star_ratio;
if(star[k][3]>-dot_size&&star[k][3]<w+dot_size&&test) context.fillRect(star[k][3],star[k][4],dot_size,dot_size);
k++;
}
}
timeout=setTimeout('anim()',fps);
}
function update_style()
{
style_id++;
if(style_id>style.length-1) style_id=0;
$i('menu_style').innerHTML=style[style_id]+' ';
init();
anim();
}
function randomize()
{
angle1=Math.round(Math.random(0,1)*5);
angle2=Math.round(Math.random(0,1)*5);
angle3=Math.round(Math.random(0,1)*5);
angle4=Math.round(Math.random(0,1)*5);
start_a=Math.round(Math.random(0,1)*18)*10;
start_b=Math.round(Math.random(0,1)*18)*10;
start_c=Math.round(Math.random(0,1)*18)*10;
start_d=Math.round(Math.random(0,1)*18)*10;
init();
anim();
}
function move(evt)
{
evt=evt||event;
cursor_x=evt.pageX-p_x;
cursor_y=evt.pageY-p_y-h/2;
star_speed=(cursor_y)/16;
}
function key_manager(evt)
{
evt=evt||event;
key=evt.which||evt.keyCode;
switch(key)
{
case 27: case 13: case 32:
flag=flag?false:true;
if(flag)
timeout=setTimeout('anim()',fps);
else
clearTimeout(timeout);
break;
}
top.status='key='+((key<100)?'0':'')+((key<10)?'0':'')+key;
}
function key_release()
{
switch(key)
{
case 27: case 13: case 32:
break;
}
}
function mouse_wheel(evt)
{
evt=evt||event;
var delta=0;
if(evt.wheelDelta)
{
delta=evt.wheelDelta/120;
}
else if(evt.detail)
{
delta=-evt.detail/3;
}
dot_w+=(delta>=0)?-1:1;
star_color_ratio=dot_w/z;
//star_ratio+=(delta>=0)?-4:4;
if(evt.preventDefault) evt.preventDefault();
}
function resize()
{
var screen_w=get_screen_size()[0];
var screen_h=get_screen_size()[1];
w=468;
h=350-15;
x=Math.round(w/2);
y=Math.round(h/2);
z=(w+h);
horizon=Math.round(h*0.04);//0.08;
star_color_ratio=dot_w/z;
p_x=Math.round((screen_w-w)/2);
p_y=Math.round((screen_h-h)/2);
var starfield=$i('starfield');
starfield.style.left=p_x+'px';
starfield.style.top=p_y+'px';
var menu=$i('menu');
menu.style.left=p_x+'px';
menu.style.top=(p_y-15)+'px';
menu.style.width=468+'px';
menu.style.height=15+'px';
var bar1=$i('bar1');
bar1.style.top='31px';
bar1.style.width=screen_w+'px';
var bar2=$i('bar2');
bar2.style.top=(screen_h-31-5)+'px';
bar2.style.width=screen_w+'px';
var rez=$i('rez');
rez.style.display='block';
rez.style.left=(screen_w-rez.offsetWidth-4)+'px';
rez.style.top=(screen_h-rez.offsetHeight-2)+'px';
var adsense=$i('adsense');
adsense.style.position='absolute';
adsense.style.left=p_x+'px';
adsense.style.top=(p_y+h)+'px';
adsense.style.width=468+'px';
adsense.style.height=15+'px';
adsense.style.display='block';
}
document.onmousemove=move;
document.onkeypress=key_manager;
document.onkeyup=key_release;
document.onmousewheel=mouse_wheel; if(window.addEventListener) window.addEventListener('DOMMouseScroll',mouse_wheel,false);
</script>
<body onload="resize();update_style();" onresize="resize()" onorientationchange="resize()">
<div id="bar1" class="bar"></div>
<div id="bar2" class="bar"></div>
<div id="title" style="left:4px;top:2px;font:bold 34px/100% arial;letter-spacing:-4px;color:#606060;text-shadow:#606060 0px 0px 4px">dot landscape </div>
<div id="menu">
<div id="menu_style" class="lnk1" style="cursor:pointer" onclick="update_style()" onmouseover="this.className='lnk2'" onmouseout="this.className='lnk1'"></div>
<div id="menu_random" class="lnk1" style="left:64px;cursor:pointer" onclick="randomize()" onmouseover="this.className='lnk2'" onmouseout="this.className='lnk1'">randomize </div>
</div>
<canvas id="starfield" style="background-color:#000000"></canvas>
<div id="rez" class="lnk1" style="width:22px;height:12px;cursor:pointer;display:none" onclick="document.location.href='http://www.chiptune.com'" onmouseover="this.className='lnk2'" onmouseout="this.className='lnk1'">REZ </div>
<div id="adsense" style="background-color:transparent;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>