JS1k: The JavaScript code golfing competition

_=' g(e,te={x:x+Cy:y+Sl:	r,a:a+t}
move,y-	Ca),y-	Sa));return e}b.onv=v?clearv):,16)}
0fftextBase="topWid5;M=Ma;Ssin;Ccos;W=a.wid;H=a.height;r7;tPPI/2;v=c.000Rect(0,0,W,HbeginPa();it+01;a4-C(t)*P;d=S(t)+1.4;=[{x:W/2,y:H/2,l:150,a:-P}i--n=[b=.pop()n.push(-a*.5/d),a*d/.5))}=n}c.(fffText(" to pause",9,9)},16;c.Intervale.functionStyle="#a+t)*	r,fill];while(	l*linebs(stroke){=M.clicksetfth=.)
"
=15;g(b,Tox=(';for(Y in $='	
')with(_.split($[Y]))_=join(pop());eval(_)

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

b.onclick=function(){v=v?clearInterval(v):setInterval(f,16)}
c.strokeStyle="#0ff";c.textBaseline="top";c.lineWidth=.5;
M=Math;S=M.sin;C=M.cos;W=a.width;H=a.height;
r=.7;t=15;P=M.PI/2;

function g(b,a){
	b={x:b.x+C(b.a+a)*b.l*r,y:b.y+S(b.a+a)*b.l*r,l:b.l*r,a:b.a+a};
	c.moveTo(b.x,b.y);c.lineTo(b.x-b.l*C(b.a),b.y-b.l*S(b.a));
	return b;
}

v=setInterval(f=function(){
	c.fillStyle="#000";c.fillRect(0,0,W,H);c.beginPath();
	i=15;t+=.01;a=.4-C(t)*P;d=(S(t)+1.4);
	bs=[{x:W/2,y:H/2,l:150,a:-P}];
	while(i--){nbs=[];while(b=bs.pop()){nbs.push(g(b,-a*.5/d),g(b,a*d/.5))}bs=nbs}
	c.stroke();c.fillStyle="#fff";c.fillText("click to pause",9,9)
},16)