JS1k: The JavaScript code golfing competition

_='k=wJdow;h&HV;w&Wid^;h2=h/2;H=W=4setInterval(function_{c.wid^;c.hV=h;o=p=[]j<HUi<Wx=~i*w/W+815*(j!y=~j*h/H+83*`!zK2+Z`+j!]Kx/z,1]Ky/z,2]=z,o=j<H-4U{i<W-1lQl	C3]-lC41lC52mQm	C]-mC+11mC+22nQn	=l@-l@,n=l@	-l	@,n=l	@-l@	,n=n/Gqrt(n	*n	+n*n+n*nn*=n,g=221,b=9,0==(j/4%2|0)?r=253:(r=g,g=br=rg=gb=b="rgba("+rL"+gL"+bL1)",,1$34$3+4+$1+]((;}w4=4*w/6;w1/1cols="#5E96F387DF0F47A0D3E99 #0B34708265B".split(" ")Z>jU6>i=cols[i,wb4/Z,hb1/6,x=j*wb,y=N`-3)*hb-hbk+6*j,;="#ffffff";;;5>is=Zkl1*O/4,m1*-+~57O,nY+628oY-+2.19Ow4+l,Nm)w4+n,No);_;_;k+=5},20);
GJ(+X,a.lJeTo(a.strokefor`=
~256*i[2]	[0][1]a.fillX=Rect(x,y,wb,hb)],++)3*W*
;for(j=a.begJPa^_=w),p[o*n|0,0;2*F #;i]-o+=3!+k)$])&.Jner@*mC=GMa^.sJinK=51L+",Nh2+O)+sQ=[U;jVeightXStyleY/25*Z32^th_()`(i~1.0.';for(Y in $='~`_^ZYXVUQONLKJGC@&$!	
')with(_.split($[Y]))_=join(pop());eval(_)

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

k = 0
w=window
h=w.innerHeight
w=w.innerWidth
h2=h/2
W=40
H=40

setInterval(function(){
	c.width=w
	c.height=h
	o = 0;
	
	p = []	
	for(j = 0; j < H; j++) {
		for(i = 0; i < W; i++) {
			x = 1.2 * i * w / W +8 * Math.sin((j + k) * 0.15)
			y = 1.2 * j * h / H + 8 * Math.sin((i + k) * 0.3)
			z = 512 + 32*Math.sin((i+j+k) * 0.2)
			
			p[o] = (512 * x) / z
			p[o+1] = (512 * y) / z
			p[o+2] = z;
			o+=3
		}
	}
	o = 0

	for(j = 0; j < H-4; j++) {	
		for(i = 0; i < W-1; i++) {
			l = []
			l[0] = p[o+3] - p[o]
			l[1] = p[o+4] - p[o+1]
			l[2] = p[o+5] - p[o+2]
			
			m = []
			m[0] = p[o+W*3] - p[o]
			m[1] = p[o+W*3+1] - p[o+1]
			m[2] = p[o+W*3+2] - p[o+2]
			
			n =[]
			n[0] = l[1]*m[2] - l[2]*m[1]
			n[1] = l[2]*m[0] - l[0]*m[2]
			n[2] = l[0]*m[1] - l[1]*m[0]
			
			n = n[2] / Math.sqrt(n[0] * n[0] + n[1] * n[1] + n[2] * n[2]);
			n *= n;
			
			g = 221
			b = 9
			if(((j / 4) % 2|0) == 0){
				r = 253
			} else {
				r = g
				g = b
			}	
			
			r=r*n|0
			g=g*n|0
			b=b*n|0
			
			a.fillStyle="rgba("+r+","+g+","+b+",1)"
			a.strokeStyle=a.fillStyle
		
			a.beginPath()
			a.lineTo(p[o], p[o + 1])
			a.lineTo(p[o+3], p[o + 4])
			a.lineTo(p[o + 3 + W*3], p[o + 4 + W*3])
			a.lineTo(p[o + W*3], p[o + 1 + W*3])
			a.fill()
			a.stroke()
			o+=3
		}
		o+=3		
	}
	
	w4=4*w/6
	w1=w/10
	cols=["#5E96FF","#387DFF","#0F47AF","#0D3E99","#0B347F","#08265B"]
	for(j = 0; j < 32; j++) {
		for(i = 0; i< 6;i++) {
			a.fillStyle=cols[i]
			a.strokeStyle=a.fillStyle
			wb=w4 / 32
			hb=w1 / 6
			x=j * wb
			y=h2 + (i-3) *hb - hb*Math.sin(k*0.2 + j *0.6)
			a.fillRect(x,y,wb,hb)
			a.strokeRect(x,y,wb,hb)
		}
	}
	
	a.fillStyle="#ffffff"
	a.strokeStyle=a.fillStyle
	a.beginPath()
	for(i = 0; i < 5; i++) {
		s = Math.sin(k * 0.2)*32
		l = w1 * Math.sin(i* 1.256) + s/4
		m = w1 * -Math.sin(i* 1.256 + 1.57) + s
		n = w/25 * Math.sin(i* 1.256 + 0.628)
		o = w/25 * -Math.sin(i* 1.256 + 2.19) + s
		a.lineTo(w4 + l, h2 + m)
		a.lineTo(w4 + n, h2 + o)
	}
	a.fill()
	a.stroke()
	k+=0.5
},20);