JS1k: The JavaScript code golfing competition

_='v=c.height=c.width=256,d=a.geKKv,v),p=new Uint32Array(d.d%.buffer),k=[],s=v,t=288,u=.1,m="3R



2103			654H20H
2H75NN5150404R074337L6#103
#6L2		5N	1R",e=Math,fsin,gcos,htan,nPI/18Ko=0xff,q=64,w=16down1}up0};setInterval(\'u7O@<=u?-@:2:k[39O0>=u?@:-2Es8OgEt8O-f:0z=v;zS{l=u+e.%n((F-z)/#1)/n;lG?360:36=l?-360ElQ18G?=t-q,x=J:=(tW-q,)y=b;yQy=b,xr;BC=r?63-b:b;9G||27l?=(sW-!b):=s-!J;xQxA,;bj=b<B?A?j:63-j:C;y=141/<B?b:B);x=F-(y>>1)r=v-x;rSr<x?(Xo,p[(2N-r)6316F|o):X(m[(32/y*(r-x)&15$w+/2&15)]&3$(4210752^<B||q))|o}a.pud,K0)\',w);
#2h(l*n)<wQ~m[x*w+y]&4;)bA,jr,y=Tg--t$f;=function(z){k[z.keyCode]=,b=s-V-t),A=V>>66#503
2	LL&65472,j=t-T,A=333(u*n);for(R0*v+z]=tImageD%(11q,r=k[3440<(b6
=e.x=j+=(j;onkey!q*,y=#22$)*%ata@358E:0;F128G0>lH7
J)-1)K0,L66N55O]?Q&&R0S--;)T-s$V1/*W)+qXp[r';for(Y in $='XWVTSRQONLKJHGFE@%$#!	
')with(_.split($[Y]))_=join(pop());eval(_)

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

var v = c.height = c.width = 256, d = a.getImageData(0, 0, v, v), p = new Uint32Array(d.data.buffer), k = [], s = v, t = 288, u = 0.1, m = "333333333333300022222222222221036666666666666547622222262222110762222222222110076222222622211007511555551511040440040004444044447333333400333337622622250322226662262221032222266226222503222266622622250322222666666665445566661111111000001111", e = Math, f = e.sin, g = e.cos, h = e.tan, n = e.PI / 180, o = 4278190080, q = 64, w = 16;
onkeydown = function(z) {
  k[z.keyCode] = 1
};
onkeyup = function(z) {
  k[z.keyCode] = 0
};
setInterval(function() {
  var z, b, j, l, A, r, y, x, B, C;
  u += k[37] ? 358 <= u ? -358 : 2 : k[39] ? 0 >= u ? 358 : -2 : 0;
  s += k[38] ? g(u * n) : 0;
  t += k[38] ? -f(u * n) : 0;
  for(z = v;z--;) {
    l = u + e.atan((128 - z) / 221) / n;
    l += 0 > l ? 360 : 360 <= l ? -360 : 0;
    0 < l && 180 > l ? (j = t & 65472, b = s - 1 / h(l * n) * (j - t), A = 1 / h(l * n) * q, r = -q, x = (j >> 6) - 1) : (j = (t & 65472) + q, b = s - 1 / h(l * n) * (j - t), A = 1 / h(l * n) * -q, r = q, x = j >> 6);
    for(y = b >> 6;0 < y && y < w && ~m[x * w + y] & 4;) {
      b += A, j += r, y = b >> 6, x += r >> 6
    }
    B = (b - s) * g(u * n) - (j - t) * f(u * n);
    C = 0 < r ? 63 - b : b;
    90 > l || 270 < l ? (b = (s & 65472) + q, j = t - (b - s) * h(l * n), A = q, r = -q * h(l * n), y = b >> 6) : (b = s & 65472, j = t - (b - s) * h(l * n), A = -q, r = q * h(l * n), y = (b >> 6) - 1);
    for(x = j >> 6;0 < x && x < w && ~m[x * w + y] & 4;) {
      b += A, j += r, y += A >> 6, x = j >> 6
    }
    b = (b - s) * g(u * n) - (j - t) * f(u * n);
    j = b < B ? 0 < A ? j : 63 - j : C;
    y = 14144 / (b < B ? b : B);
    x = 128 - (y >> 1);
    for(r = v - x;r--;) {
      r < x ? (p[r * v + z] = o, p[(255 - r) * v + z] = 6316128 | o) : p[r * v + z] = (m[(32 / y * (r - x) & 15) * w + (j / 2 & 15)] & 3) * (4210752 ^ (b < B || q)) | o
    }
  }
  a.putImageData(d, 0, 0)
}, w);