JS1k: The JavaScript code golfing competition

for(_=");~+n*n~`atan2_=_(^={}Z;++Y=[]Xcos$c.#n=!(W[i].(x,y,z){PI0,5399,)*Gt;sin(Kd;b.p+;T.;~#stroke.push(~WQ(=0;=,n~d=sqrt(	,S,DreturnG25.lengthfor(var mm<;I.$(function 
var{sin,$,sqrt,_,a$,}=Math;
R!-9;b=1;d=1;l=9;efg=x;h=z;k=(h-f(l-n)-(g-e(d-b~m=((l-n(b-f)-(d-b(n-e))/k;{x:600+(e+m*(g-e)60y:338+y/z*600};}
H(b,aBX;if(D>D);SYmtl/1.65;MC;Nq;An;K=*2/S*m;G=+a;C=q=!p^q	q*q`q=N-G!Gp^C	C*C`C=M+K!A+KIZM=MN=NA=AC=Cq=q!nK^C-M,n-A)G=a(q-N)/t)l=tDD+1BI~H(I,a~}}
QTZBXS=SH=D;bZM=xN=yA=zKG=-.01l=25CM+qN+nA+D=1Bb~H(T.B[0],/4-F/35/4.1~ T;}
L(bU=R(M,N,A~V=R(C,q,n~#beginPath(Style='hsla('+S*99+D*15)+',100%,50%,1)';#moveTo(U.x,U.y~#lineTo(V.x,V.y(~BYm)L(B[m]~}
D(while(W)W.splice(1-15,3155,4)-2,8)3,6)~F++;#fillRect(120675~for(ii<WYi)LB[0]~requestAnimationFrame(D~}a.width=1200;a.height=675;WX;FD(~";G=/[^ %-W[\]a-}]/.exec(_);)with(_.split(G))_=join(shift());eval(_)

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

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

function R(x,y,z){
	n=-9;b=1;d=1;l=9;e=0;f=0;g=x;h=z;k=(h-f)*(l-n)-(g-e)*(d-b);m=((l-n)*(b-f)-(d-b)*(n-e))/k;
	return {x:600+(e+m*(g-e))*600,y:338+y/z*600};
}

function H(b,S,D,a) {
  b.B=[];
  if (b.D > D) return;
  for (var m = 0; m < S; ++m) {
    t=b.l/1.65;M=b.C;N=b.q;A=b.n;K=PI*2/S*m;G=PI+a;C=sin(K)*sin(G)*t;q=cos(G)*t;n=cos(K)*sin(G)*t;p=atan2(q,n);
    d=sqrt(q*q+n*n);q=N-sin(p+b.G)*d;n=cos(p+b.G)*d;p=atan2(C,n);d=sqrt(C*C+n*n);C=M+sin(p+b.K)*d;n=A+cos(p+b.K)*d;
    I={};I.M=M;I.N=N;I.A=A;I.C=C;I.q=q;I.n=n;I.K=atan2(C-M,n-A);I.G=acos((q-N)/t);I.l=t;I.D=b.D+1;
    b.B.push(I);
    H(I,S,D,a);
  }
}

function Q(x,y,z,S,D) {
  T={};T.B=[];T.S=S;T.H=D;b={};b.M=x;b.N=y;b.A=z;b.K=b.G=PI-.01;b.l=25;b.C=b.M+sin(b.K)*sin(b.G)*25;
  b.q=b.N+cos(b.G)*25;b.n=b.A+cos(b.K)*sin(b.G)*25;b.D=1;T.B.push(b);
  H(T.B[0],S,D,PI/4-cos(F/35)*PI/4.1);
  return T;
}

function L(b) {
  U=R(b.M,b.N,b.A);
  V=R(b.C,b.q,b.n);
  c.beginPath();
  c.strokeStyle = 'hsla('+(W[i].S*99+b.D*15)+',100%,50%,1)';
  c.moveTo(U.x,U.y);
  c.lineTo(V.x,V.y);
  c.stroke();
  for(var m=0;m<b.B.length;++m)L(b.B[m]);
}

function D(){
  while (W.length) W.splice(0, 1);
  W.push(Q(-15,30,150,5,4));
  W.push(Q(-50,30,99,2,8));
  W.push(Q(50,30,99,3,6));
  F++;
  c.fillRect(0,0,1200,675);
  for(i=0;i<W.length;++i)L(W[i].B[0]);
  requestAnimationFrame(D);
}

a.width=1200;a.height=675;W=[];F=0;
D();