forked: Vibrating particles

jsdoit.css

#desc{
font-size:80%;
font-family:tahoma;
color:#222;
width:250px;
float:left;
position:absolute;
margin:5px;
background-color:rgba(255, 255, 255, 0.5);
}

jsdoit.html

<div id = 'desc'>
<b>Particles 02:</b>Mouse over them!
</div>
<canvas id = 'canvas'></canvas>

jsdoit.js

// forked from prayushs's "Vibrating particles" http://jsdo.it/prayushs/particles
window.onload = init();
function init(){
canvas = document.getElementById('canvas');
context = canvas.getContext('2d');
canvas.width = window.innerWidth - 20;
canvas.height = window.innerHeight - 20;
canvas.addEventListener('mousemove',MouseMove,false);

mouse = {x:0,y:0}
particleHolder = [];
x = 100;
y = 100;
angle = 0.2;
radius = 80;
particleCount = 1000;
color = [
'rgba(106, 210, 231, 0.5)',
'rgba(250, 104, 0, 0.5)',
'rgba(243, 132, 48, 0.5)',
'rgba(198, 244, 98, 0.5)',
'rgba(255, 107, 107, 0.5)',
'rgba(250, 204, 0, 0.5)',
 'rgba(232, 125, 2, 0.5)',
'rgba(202, 232, 105, 0.5)',
'rgba(0, 169, 199, 0.5)',
'rgba(63, 191, 202, 0.5)',
'rgba(174, 225, 55, 0.5)',
 'rgba(208, 231, 80, 0.5)',
'rgba(78, 189, 233, 0.5)',
'rgba(37, 174, 228, 0.5)',
'rgba(249, 214, 36, 0.5)',
'rgba(240, 122, 25, 0.5)',
'rgba(239, 169, 46, 0.5)',
'rgba(136, 197, 38, 0.5)',
'rgba(190, 242, 2, 0.5)',
'rgba(250, 42, 0, 0.5)',
'rgba(0, 178, 255, 0.5)',
'rgba(127, 255, 36, 0.5)',
'rgba(194, 255, 102, 0.5)',
'rgba(200, 255, 0, 0.5)',
'rgba(19, 205, 75, 0.5)',
'rgba(126, 112, 215, 0.5)',
'rgba(187, 233, 7, 0.5)',
'rgba(192, 250, 56, 0.5)',
'rgba(170, 255, 0, 0.5)',
'rgba(255, 170, 0, 0.5)',
'rgba(255, 0, 170, 0.5)',
'rgba(170, 0, 255, 0.5)',
'rgba(0, 170, 255, 0.5)',
'rgba(255, 255, 0, 0.5)'
];


function MouseMove(event)
{
	mouse.x = event.pageX - canvas.offsetLeft;
	mouse.y = event.pageY - canvas.offsetLeft;
}
for(i = 0; i < particleCount ; i++)
{particleHolder.push(new generateParticles());}
function generateParticles()
{
this.x = Math.random()*canvas.width;
this.y = Math.random()*canvas.height;
this.color = color[Math.floor(Math.random()*color.length)];
this.rad = Math.floor(Math.random()*8);
}
function vibrate()
{

context.fillStyle = 'white';
context.fillRect(0, 0, canvas.width, canvas.height);
for(var j = 0; j < particleHolder.length; j++)
{
var p = particleHolder[j];
var distanceX = p.x - mouse.x;
var distanceY = p.y - mouse.y;
particleDistance =  Math.sqrt(distanceX*distanceX + distanceY*distanceY);

particleMouse = Math.max( Math.min( 75 / ( particleDistance /p.rad ), 10 ), 0.1 );
context.beginPath();
context.fillStyle = p.color;
context.arc(p.x + Math.sin(angle++*Math.cos(radius++)), 
p.y - Math.cos(angle++*Math.sin(radius++)), 
p.rad*particleMouse, Math.PI*2, false);
context.fill();
}
}
setInterval(vibrate, 30);
};