JS1k: The JavaScript code golfing competition

r=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||function(f){window.setTimeout(f,1E3/60)};var e=-0.5,g=4,h=0.005,k=0,m=100,n=50,p=0,q=0;colorIntv=1;phase=0;window.onload=function(){b.style.margin;c.style.backgroundColor="#222";s();t();c.focus()};window.onresize=s;function s(){c.width=window.innerWidth;c.height=window.innerHeight;p=c.width/2;q=c.height/2}
function t(){a.save();a.setTransform(1,0,0,1,0,0);a.clearRect(0,0,c.width,c.height);a.restore();a.lineWidth=1;for(var f=150*Math.sin(e)+50,d=-Math.PI;d<Math.PI;d+=0.05){var l=f*Math.sin(g*d)+f*Math.cos(g*d),u=5+5*Math.sin(f*d);a.strokeStyle="hsl("+k+","+m+"%,"+n+"%)";k+=colorIntv;if(255<k||0>k)colorIntv*=-1;a.beginPath();a.arc(l*Math.cos(d+phase)+p,l*Math.sin(d+phase)+q,u,0,2*Math.PI);a.stroke()}g+=h;if(6<g||3>g)h*=-1;e=e>2*Math.PI?0:e+0.005;phase=phase>2*Math.PI?0:phase+0.01;r(t)};

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

r = (function(){
    return window.requestAnimationFrame    ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame    ||
        window.oRequestAnimationFrame      ||
        window.msRequestAnimationFrame     ||
        function (callback) {
            window.setTimeout(callback, 1000 / 60);
        };
})();

var ampt = -0.5, k = 4,
    akIntv = 0.005,
    color = { h: 0, s: 100, l: 50 },
    offsetX = 0,
    offsetY = 0;
    colorIntv = 1,
    phase = 0;

window.onload = function () {
    b.style.margin

    c.style.backgroundColor = "#222";
    setDimensions();

    drawLoop(c);
    c.focus();
}

window.onresize = setDimensions;

function setDimensions () {
    c.width = window.innerWidth;
    c.height = window.innerHeight;
    
    offsetX = c.width/2;
    offsetY = c.height/2;
}

function drawLoop () {
    // clear out the screen first
    a.save();
    a.setTransform(1, 0, 0, 1, 0, 0);
    a.clearRect(0, 0, c.width, c.height);
    a.restore();
    
    // draw the flower
    a.lineWidth = 1;
    var amp = 150 * Math.sin(ampt) + 50;
    for (var theta=-Math.PI; theta<Math.PI; theta+=0.05) {
        var r = amp * Math.sin(k * (theta)) + amp * Math.cos(k * (theta));
        var rad = 5 + Math.sin(amp * theta) * 5;
        
        a.strokeStyle = 'hsl('+color.h+','+color.s+'%,'+color.l+'%'+')';
        
        color.h += colorIntv;
        if (color.h > 255 || color.h < 0)
            colorIntv *= -1;
   
        a.beginPath();
        a.arc(r * Math.cos(theta + phase) + offsetX, r * Math.sin(theta + phase) + offsetY, rad, 0, 2*Math.PI);
        a.stroke();
    }

    // increment and cycle variables if necessary
    k += akIntv;
    if (k > 6 || k < 3)
        akIntv *= -1;

    ampt = ampt > 2*Math.PI ? 0 : ampt + 0.005;
    phase = phase > 2*Math.PI ? 0 : phase + 0.01;

    // queue up for the next cycle
    // closure compiler doesn't obfuscate this right so I just change it manually
    r(drawLoop);
}