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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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Xen

remix of d/4042 by u/pyrzqxgl

function u(t) {

m=c.width/2
for(i=2e3;i--;x.fillRect(m+m*C(t+359*i),m*S(t+2e1*i),99,99))x.fillStyle=`hsla(${t*i/3*S(i/m)},99%,50%,.04)`

Dec 27 2017 7:16 PM UTC

}// 119/140

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Plasma_Zebra

u/iverjo

#plasma

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Detomon

function u(t) {

c.width=c.height=32;for(i=0;i<32;i++)for(j=0;j<32;j++){x.fillStyle=R(S(i/32+t+3.14)*255,S(j/32+t)*255);x.fillRect(i,j,1,1)}

Feb 22 2017 8:55 AM UTC

}// 125/140

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u/iverjo

#plasma

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zkfrontman

remix of d/4983 by u/nickd3000

function u(t) {

a=c=>128*(.5+C(7*(i/1e3+c)));for(i=220;i--;)x.fillStyle=R(a(-t/9),a(t/7),a(t/5)),x.fillRect(9*i,0,9,2e3);

Dec 31 2017 4:51 PM UTC

}// 105/140

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u/iverjo

#plasma

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Xen

function u(t) {

t?x.fillRect((F=frame)%3,C(F),1,1,x.fillStyle=R(F%69,F%96)):c.width=3

Jul 26 2017 6:36 PM UTC

}// 69/140

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Low-Res 69byte Plasma Gone wrong lol

u/iverjo

#plasma
u/BuRRak

67 if you use t*60 instead of frame

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magna

remix of d/8755 by u/magna

function u(t) {

T.valueOf=Math.random
x.fillStyle=`hsl(${t*9},40%,40%`
x.drawImage(c,0,0,w=2e3,w,0,0,w-8,w-8)
x.fillText(u,T*w,T*w)
x.filter='blur(9px'

Jun 27 2018 3:40 AM UTC

}// 136/140

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#plasma

u/magna

If you tilt your head sideways, it looks like rain on a misty alien planet.

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