JS1k: The JavaScript code golfing competition

/* TODO: minify */
for(_='50`n._),^+2`^_Z_arc(YA(iX=a.W/2VV,U;iLraKteJtionHfuncH Gk=2`/(5,I-5^;p=[];thr[I]--;)for(i=*S(*C(+=tp[i120q.5,I+5^X+);Style="_fill#2a2430";0,	Rect(		w,h_.lengp.push(()_stroke0.1,1`a)ZeTo(wV+1`*ka^hV+k*q^_beginPa
wWwid;hWheight;c.globalComposiJOpeKH="lighJr"wi(Ma)M=2*PI,y=PI/3,R=Kndom,C=cos,S=sin,F=sqrt;s=(N=DaJ.now);mWcloneNode(0n=m.getConJxt("2d"tKnslaJ(wUhV
;Y20	-25	3		M#fff9af";;GA(b,e){d=F(b*b+e*eby)-ey^100d/100)-8dV5^by)+ey))}I=;-<=I;I-=10)-;>=iL+=10)X-X-		0#`ffff";
;0L<p-2L+=3)]?(+2]ZlineTo(k*],k*+1])):(_closePa,,,
r=[	M/3,M/3*2]n=c;#c2ff14";~GD{requestAnimaHFKme(Dt=N-s;s;t/=6;t|0Lu=R*t-tUv=-R*t,{x:wUy:hUu:uUv:v,l:0}t/=4;_cleardKwImage(m,	0pLq=],x*u,y*v,k=2*l|	
,Yx,y,(60-l)/6+1		M^rgba("+[260-k,k+5	k,(-k)/300]+")",,60<(l)&&p.splice(i,1I=r;IV	
,q=-30*I+1	a=-mova=+lin}';g=/[^ -FIM-T[\]a-~]/.exec(_);)with(_.split(g))_=join(shift());eval(_)

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

w=a.width
h=a.height
c.globalCompositeOperation='lighter'
p=[]
with(Math)z=2*PI,y=PI/3,R=random,C=cos,S=sin,Q=sqrt
s=(N=Date.now)()

m=a.cloneNode(0)
n=m.getContext('2d')
n.fillStyle='#2a2430'
n.fillRect(0,0,w,h)
n.translate(w/2,h/2)
n.beginPath()
n.arc(200,-250,30,0,z)
n.fillStyle='#fff9af'
n.fill()

function A(a,b){d=Q(a*a+b*b)
    p.push(a*C(y)-b*S(y),S(d/100)*100-C(d/25)*8,a*S(y)+b*C(y))}

for(j=120;j>=-120;j-=10)
    for(i=-120;i<=120;i+=10)A(i-5,j-5),A(i-5,j+5),A(i+5,j+5),A(i+5,j-5),p.push(0,0,0)

n.fillStyle='#2a2430'
n.strokeStyle='#50ffff'
n.beginPath()

for(i=0;i<p.length-2;i+=3)
    if(p[i])k=250/(p[i+2]+250),n.lineTo(k*p[i],k*p[i+1])
    else n.closePath(),n.fill(),n.stroke(),n.beginPath()

r=[0,z/3,z/3*2]

p=[]
n=c
n.strokeStyle='#c2ff14'
~function L(){
    requestAnimationFrame(L)
    t=N()-s
    s+=t
    t/=6

    for(i=t|0;i--;){
        u=R()*t-t/2
        v=-R()*t
        p.push({x:w/2,y:h/2,u:u/2,v:v,l:0})
    }

    t/=4
    n.clearRect(0,0,w,h)
    n.drawImage(m,0,0)

    for(i=p.length;i--;){
        q=p[i]
        q.x+=t*q.u
        q.y+=t*q.v

        k=2*q.l|0
        n.beginPath()
        n.arc(q.x,q.y,(60-q.l)/6+10,0,z)
        n.fillStyle='rgba('+[260-k,k+50,k,(120-k)/300]+')'
        n.fill()

        if((q.l+=t)>60)p.splice(i,1)
    }

    for(j=r.length;j--;){
        r[j]+=t/20

        n.beginPath()

        q=-30*j+10
        a=r[j]-.1
        k=250/(150*S(a)+250)
        n.moveTo(w/2+150*k*C(a),h/2+k*q)

        a=r[j]+.1
        k=250/(150*S(a)+250)
        n.lineTo(w/2+150*k*C(a),h/2+k*q)

        n.stroke()
    }
}()