JS1k: The JavaScript code golfing competition

for(_='eight~atan2V = UsclT-=cLptKKsJ/2G,yEc.fillCCRect(Brandomsz0,){CStyle=)*(p-rldreturn draw(l-nfNocos0;(b-f)-(K.(n-e))/D=b.clientsin);a.width;c.globalAlpha=	a.h~function U=-125+rn(25(c.516.toString(16)UparseInt((.5J[i].
var {V,sqrt,,,PI,a,}=Math;rn=;p3D(xE,zxLXELY,zLZ;p=V(xE),d=sqrt(y*y+x*x),x=E=;n=-1b=1,l=1d=1,e=f=g=x,h=z,D=(h-f)-(g-e(d-b),m=((g-eh-f,A=(d-b;(m>0&&m<1&&A>0&&A<1)?{x:cx+(n+m*)TE:cy+y/z*T,d:(x*x+y*y+z*z)}:{d:-1};}rgb(cr+g+b-"#"+r+g+b;}(for(i=i<55;++iK={};xyz=25c=/35;vz=-v;J.push(K}rl+=(/112)/60	.1;"#000";B  , for(var i=J.length-1;i>=--irgb(
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

var {atan2,sqrt,sin,cos,PI,acos,random}=Math;
rn=random;


/* minified 3D projection function */
function p3D(x,y,z){
	x-=cX,y-=cY,z-=cZ;
	p=atan2(x,y),d=sqrt(y*y+x*x),x=sin(p-rl)*d,y=cos(p-rl)*d;
	n=-10,b=1,l=10,d=1,e=0,f=0,g=x,h=z,k=(h-f)*(l-n)-(g-e)*(d-b),m=((g-e)*(b-f)-(h-f)*(n-e))/k,j=((l-n)*(b-f)-(d-b)*(n-e))/k;
	return (m>0&&m<1&&j>0&&j<1)?{x:cx+(n+m*(l-n))*scl,y:cy+y/z*scl,d:(x*x+y*y+z*z)}:{d:-1};
}

/* color string based on radian input */
function rgb(c){
	r = parseInt((.5+sin(c)*.5)*16);
	g = parseInt((.5+cos(c)*.5)*16);
	b = parseInt((.5-sin(c)*.5)*16);
	return "#"+r.toString(16)+g.toString(16)+b.toString(16);
}

/* draw */
function draw(){

	for(i=0;i<55;++i){
		pt={};
		pt.x=-125+rn()*250;
		pt.y=-125+rn()*250;
		pt.z=250;
		pt.c=fNo/35;
		pt.vz=-v;
		pts.push(pt);
	}

	rl+=sin(fNo/112)/60;
	
	c.globalAlpha=.1;
	c.fillStyle="#000";
	c.fillRect(0, 0, a.width, a.height);
	for(var i=pts.length-1;i>=0;--i){
		c.fillStyle=rgb(pts[i].c);
		pts[i].z+=pts[i].vz;
		pt=p3D(pts[i].x,pts[i].y,pts[i].z);
		if(pt.d+1){
			sz=.5+2000/(1+pt.d/20);
			c.globalAlpha=1/(1+sz/4);
			c.fillRect(pt.x-sz/2,pt.y-sz/2,sz,sz);
		}
		if(pts[i].z<0)pts.splice(i,1);
	}
	fNo++;
	requestAnimationFrame(draw);
}

/* remove this beofre minifiying */
	window.a=document.querySelector("canvas");
	window.b=document.querySelector("body");
	window.c=window.a.getContext("2d");
/*********************************/	

a.width=b.clientWidth;
a.height=b.clientHeight;
fNo=0;
cX = 0;
cY = 0;
cZ = -25;
pch = 0;
yw = 0;
rl = 0;
cx=a.width/2;
cy=a.height/2;
scl=850;
pts=[];
v=1.5;

draw();