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function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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xiho

remix of d/3036 by u/artfarnaa

function u(t) {

 for (c.width|=a=100;--a;x.arc(960-S(G+t)*200,
 540+C(t+G)*400,Math.abs(S(t))+50,0,
 1))x.moveTo(G=a/5|960,540)
 x.fill('evenodd')

Aug 8 2017 10:01 AM UTC

}// 130/140

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kchplr

function u(t) {

x.fillStyle='#0001';for(x.fillRect(0,0,2e3,2e3),i=0;i<6.29;Y=S(i*2+t),X=(C(2*i)+C(t+i+Y)),x.clearRect(960+X*450,536+Y*500,20,9))i+=.002

Aug 5 2017 2:42 PM UTC

}// 135/140

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A glowy curve, inspired by the inverted colors of https://www.dwitter.net/d/3015 by Cantelope

u/kchplr

Noticed it is very slow in firefox, has lot of artefact on Safari and doesn't even render properly in stable Chrome. The only browser rendering it correctly is Chrome Canary. Oh, well.
u/kchplr

Here is a version which renders correctly on stable Chrome : for(x.fillStyle='rgba(0,0,0,.1)',x.fillRect(0,i=0,2e3,2e3);i<7;Y=S(i*2+t),X=(C(2*i)+C(t+i+Y)),x.clearRect(960+X*450,536+Y*500,20,9))i+=.002

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Xen

remix of d/1259 by u/aemkei

function u(t) {

x.fillStyle=R(c.width^=0);t||(p=[X=I=70]);for(p[I++*I%55+3178]=i=699;i++<3230;x.fillRect(i%X*29,i/4+X,p[i]=p[i]+p[i+1]+p[i+X]+p[i+X]>>2,9));

Aug 1 2017 10:16 PM UTC

}// 140/140

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u/Lazy1337

#fire

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Xen

remix of d/2997 by u/cagr30

function u(t) {

q=t*99;x.fillStyle=`hsla(${q},99%,50%,.1`;x.fillRect(q%1920,q%1080,r=99*T(q),r)

Aug 1 2017 7:57 PM UTC

}// 79/140

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cagr30

function u(t) {

c.width=192;A=Math.abs;Y=A(t*99%176-88);X=A(t*139%376-188);x.F=x.fillRect;x.F(X,Y+7,3,5);x.F(187,Y+C(X/39)*29,5,20);x.F(0,Y-S(X/29)*24,5,20)

Aug 1 2017 3:57 PM UTC

}// 140/140

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Xen

remix of d/2963 by u/p01

function u(t) {

for(X=c.width=99;X--;x.fillRect(X,D,1-D/7,59-D*6))for(D=0;','<(u+1)[t+D*C(T=X/99-C(t))|(4.5+D*S(T))<<3]&&D<6;)D+=.1

Jul 31 2017 11:18 PM UTC

}// 115/140

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Dweetenstein115

u/iverjo

Impressive! Also kudos to p01 for creating the original
u/donbright

omg
u/Xen

Every remix i've ever done wouldn't exist without the original ;-)
u/iverjo

#wolfenstein
u/Xen

#d3 #raymarching

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Xen

remix of d/2982 by u/New_Core

function u(t) {

for(c.width|=i=40;i--;x.fill())i%2>0?a=500:a=0,x.fillStyle=`hsla(${i*9},99%,50%,.4`,x.lineTo(999+a*S(i*.698+t),i>20?a:-a+999)

Jul 31 2017 10:48 PM UTC

}// 125/140

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spbyrne

function u(t) {

h=960,c=128,x.beginPath(),x.fillStyle=R(S(t)*c+c,S(t+2)*c+c,S(t+4)*c+c),x.arc(h*.8+(h*.6*S(t)),h*.6,(h/3+S(t)*c),t/2,t/2+2),x.fill()

Jul 31 2017 12:48 AM UTC

}// 133/140

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u/donbright

great job

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New_Core

function u(t) {

c.width|=0
for(i=60;i--;)x.beginPath(),x.arc(960+i*10*S(t+i/99),540+200*C(t*2+i/9),a=99*S(3+i/6)+120,0,7),x.fillStyle=R(0,99,0),x.fill()

Jul 30 2017 11:08 AM UTC

}// 136/140

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Wasnt what I was going for but funny enough to post ;)

u/sigveseb

amost feels a little metaball-y
u/iverjo

This is rad, man! How does it work?
u/joeytwiddle

Funny effect :) Using i-=6 shows up some sine waves
u/iverjo

#metaballs

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Xen

function u(t) {

for(z=h=c.width=99;z--;)for(y=h;y--;x.fillRect(z,y/.8,N,N))for(N=D=2.6;X=D*z/h-D,Y=D*y/h-D,D+=d=(X*Y-C(t*T(Y))+D*N)/2-3+C(X)*C(Y),1<d*N--;);

Jul 29 2017 8:01 PM UTC

}// 140/140

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u/jick

This is really nice.
u/Xen

Thanks, its a rubbish port of p01's TeaStorm