Dweets awesomed by u/Purpzie

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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Purpzie

remix of d/10506 by u/Purpzie

function u(t) {

for(r=Math.random,i=1e3;i--;x.fillRect(X,Y,25,25))X=r()*2e3,Y=r()*1e3,x.fillStyle=`hsl(${(S(t-X/99)+C(t-Y/99))*(S(t)*300)} 99%70%)`

Oct 16 2018 5:12 PM UTC

}// 131/140

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u/katkip

nice

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Purpzie

remix of d/10505 by u/Purpzie

function u(t) {

for(r=Math.random,i=1e3;i--;x.fillRect(X,Y,25,25))X=r()*2e3,Y=r()*1e3,x.fillStyle=`hsl(${(S(t-X/1e3)+C(t-Y/99))*(S(t)*300)} 99%70%)`

Oct 16 2018 5:08 PM UTC

}// 132/140

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i love messing with coordinate-based color

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Purpzie

remix of d/10504 by u/Purpzie

function u(t) {

for(r=Math.random,i=1e3;i--;x.fillRect(X,Y,25,25))X=r()*2e3,Y=r()*1e3,x.fillStyle=`hsl(${(S(t-X/99)+C(t-Y/99))*99-100} 99%70%)`

Oct 16 2018 5:04 PM UTC

}// 127/140

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Purpzie

remix of d/10475 by u/Purpzie

function u(t) {

for(r=Math.random,i=1e3;i--;x.fillRect(X,Y,25,25))X=r()*2e3,Y=r()*1e3,x.fillStyle=`hsl(${(S(t-X/1e3)+C(t-Y/99))*250} 99%70%)`

Oct 16 2018 5:02 PM UTC

}// 125/140

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Purpzie

remix of d/10343 by u/Purpzie

function u(t) {

for(r=Math.random,i=500;i--;)X=r()*2e3,Y=r()*1e3,x.fillStyle=`hsl(${Y/50*X/25+t*99} 99%65%)`,x.fillRect(X,Y,25,25)

Oct 15 2018 8:10 PM UTC

}// 114/140

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Purpzie

function u(t) {

for(i=1920;i-=a=10;)x.fillStyle=R(r=S(t**5+i)<0?255:0,r,r),x.fillRect(i,0,a,a);x.drawImage(c,0,a)

Oct 15 2018 7:43 PM UTC

}// 97/140

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woven

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Purpzie

function u(t) {

for(r=Math.random,x.drawImage(c,S(t**9)*5,T(t**9)),i=1e3;i--;x.fillRect(r()*1920,r()*1080,9,9))x.fillStyle=R(r()*255,r()*255,r()*255)

Oct 15 2018 7:28 PM UTC

}// 133/140

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corruption

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Purpzie

remix of d/10401 by u/rbong

function u(t) {

c.height|=p=m=>(S(Y+t+m*90)+1)*250;for(i=108;i--,Y=(0|i/4)*40;a<b&&x.fillRect(a,Y,b-a,40))x.fillStyle=R(a=p(m=i%4),50,b=p(m+1%4))

Oct 15 2018 6:40 PM UTC

}// 129/140

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Shortened by 11 characters (plus a color change)

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Purpzie

function u(t) {

for(i=2e3;i--;x.fillRect(t*Math.random()*100,i,9,9))x.fillStyle=`hsl(${i/4+t*50},90%,50%)`

Oct 12 2018 8:05 PM UTC

}// 90/140

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Purpzie

remix of d/4329 by u/retera

function u(t) {

for(c.width|=0,d=720;d--;x.fillRect(C(a=b/8/t+t/r)*s*S(b%8+t)+960,S(a)*s*C(b%8-t)+540,8,8))s=480+C(r=0|d/72,b=d%72)*r*5

Oct 12 2018 4:53 PM UTC

}// 119/140

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Combined 3 for loops into 1, shortening from 140 to 119 characters

u/donbright

awesome

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