JS1k: The JavaScript code golfing competition

function dB(e,t,n,r,i,s,o,u){c.moveTo(e,t);c.bezierCurveTo(n,r,i,s,o,u);c.save();c.translate(o,u);c.rotate(P);c.translate(-o,-u);c.bezierCurveTo(i,s,n,r,e,t);c.save();c.translate(o,u);c.rotate(P);c.translate(-o,-u)}function dL(){for(var e=0;sX+2*e*len<w;++e){for(var t=0;sY+2*t*len<w;++t){dB(sX+2*e*len,sY+2*t*len,rx1+2*e*len,ry1+2*t*len,rx2+2*e*len,ry2+2*t*len,sX+(2*e+1)*len,sY+2*t*len)}}}var M=Math,R=M.random,F=M.floor,C=M.cos,S=M.sin,P=M.PI,sX=0,sY=0,len=30,r1=F(50*R()),r2=F(50*R()),ang1=2*P*R(),ang2=2*P*R(),rx1=sX+len/2+r1*C(ang1),ry1=sY+r1*S(ang1),rx2=sX+len/2+r2*C(ang2),ry2=sY+r2*S(ang2),w=c.width=c.height=M.max(window.innerWidth,window.innerHeight);c.beginPath();dL();c.translate(w/2,w/2);c.rotate(P/2);c.translate(-w/2,-w/2);dL();c.lineWidth=1;c.stroke()

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var M = Math,
	R = M.random,
	F = M.floor,
	C = M.cos,
	S = M.sin,
	P = M.PI,
	sX = 0,
	sY = 0,
	len = 30,
	r1 = F(50*R()),
	r2 = F(50*R()),
	ang1 = 2*P*R(),
	ang2 = 2*P*R(),
	rx1 = sX + len/2 + r1*C(ang1),
	ry1 = sY + r1*S(ang1),
	rx2 = sX + len/2 + r2*C(ang2),
	ry2 = sY + r2*S(ang2),
	w = c.width = c.height = M.max(window.innerWidth,window.innerHeight);

function drawBase(x0,y0,x1,y1,x2,y2,x3,y3) {
	c.moveTo(x0,y0);
	c.bezierCurveTo(x1,y1,x2,y2,x3,y3);
	c.save();
	c.translate(x3,y3);
	c.rotate(P);
	c.translate(-x3,-y3);
	c.bezierCurveTo(x2,y2,x1,y1,x0,y0);
	c.save();
	c.translate(x3,y3);
	c.rotate(P);
	c.translate(-x3,-y3);
}

function drawLines() {
	for(var i = 0; sX + 2*i*len < w; ++i) {
		for(var j = 0; sY + 2*j*len < w; ++j) {
			drawBase(sX + 2*i*len,sY + 2*j*len,rx1 + 2*i*len,ry1 + 2*j*len,rx2 + 2*i*len,ry2 + 2*j*len,sX + (2*i + 1)*len,sY + 2*j*len);
		}
	}
}

c.beginPath();

drawLines();
c.translate(w/2,w/2);
c.rotate(P/2);
c.translate(-w/2,-w/2);
drawLines();

c.lineWidth = 1;
c.stroke();