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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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freetobelee

function u(t) {

c.width=1920;for(i=9e3;i--;)x.fillRect(960+S(i/99)*i/3,540+C(i/88+t)*i/3,S(i)**3*9,S(i)**3*9,x.fillStyle=`rgb(${i%256},${i%256},${i%256})`)

Sep 20 2024 4:39 PM UTC

}// 139/140

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Created using Claude.ai

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SockTaters

remix of d/32467 by u/SockTaters

function u(t) {

eval(unescape(escape`景爨挮睩摴栽椽㔱㈻椭ⴻ砮晩汬却祬攽刨堽䤥㠪ㄶⱙ㵉⼴簱㔬娽㈪䤦ㄱ㈩ⱸ⹦楬汒散琨㈵㘫䌨琫䵡瑨⹡瑡渨娯堩⤪⡘⩘⭚⩚⤪⨮㔬㘵⭙ⰱ㜬ㄷ⤩䤽㜪⡓⡴⤼〩⬵㘪⡃⡴⤼〩幩`.replace(/u([^D].)/g,'$1%')))

Sep 20 2024 9:30 AM UTC

}// 127/140

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Volumetric RGB #Cube

u/SockTaters

best attempt at an uncompressed version: for(c.width=i=512;i--;x.fillStyle=R(X=I%8*8,Y=I/8|7,Z=I&56),x.fillRect(9+C(t+Math.atan(Z/X))*(X*X+Z*Z)**.5,Y,9,9))I=7*(S(t)<0)+56*(C(t)<0)^i
u/magna

awesome!

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taupelink

remix of d/32416 by u/taupelink

function u(t) {

g=n=>(((X*n/4%4-2)**2+(Y/n%4-2)**2-4)**2-8)**2|0;for(i=2e4;i--;x.fillRect(240+15*X,60+15*Y,w=g(4)+g(1)&37?0:2*t/t**t,w))X=i*i*t%96,Y=X*i%64

Sep 20 2024 5:56 AM UTC

}// 139/140

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d/32473

u/cantelope

total dweets (by taupelink): 1,168 😂
u/tomxor

This one is so neat. Don't stop taupelink 😄

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magna

remix of d/32471 by u/rodrigo.siqueira

function u(t) {

for(i=2e3;i--;d>91e3&Math.random()>.002&&x.fillRect(i,Y,1,1))Y=frame,d=(i-960)**2+(Y-540)**2

Sep 20 2024 2:31 AM UTC

}// 92/140

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Full moon scanline #moon #scanline

u/rodrigo.siqueira

Great! Suggestion for future code: Y=t*60 is 1 character shorter than Y=frame and it also prevents the "while line" on top because frame starts with "1" and t*60 starts with "0"
u/magna

Sweet! Noted.

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rodrigo.siqueira

function u(t) {

for(j=3e3;j--;c.style.filter=`invert(`)a=j/90+t,r=j/10+(t<2?99*j*T(j*t-5)/t:0),x.fillRect(940+C(a)*r,540+S(a)*r,S(t/5)+C(t/19),1+S(j))

Sep 19 2024 1:14 PM UTC

}// 134/140

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Full moon spiral #moon #spiral

u/lewdev

It's like a logo intro. Nice!

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lewdev

remix of d/32457 by u/lewdev

function u(t) {

eval(unescape(escape`砮晩汬剥捴⠰ⰰⱣ⹷楤瑨簽〬㉥㌩ഊ景爨椽ㅥ㌻椭ⴻ⤍ੲ㴱㔰ⱘ㴹㘰⭓⡩⤪匨琪㈩⩲ⱙ㴵㐰⭃⡩⤪ㄵ〬砮晩汬却祬攽恨獬⠵㔬㤹┬⑻䄽匨椩⩓⡴⨲⬲⤪㌰⬳ぽ┬⑻䄼㈰㼮㈺ㅽ怬砮晩汬剥捴⡘ⱙⰲ〬㈰⤠`.replace(/u([^D].)/g,'$1%')))

Sep 19 2024 2:35 AM UTC

}// 139/140

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💍 Spinning gold ring (w/shadow & hide black boxes)

u/Joachim

Good job!
u/lewdev

Thanks u/Joachim!
u/jpthinker

Exactly what I was going for! Thanks u/lewdev !

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SockTaters

function u(t) {

for(c.width=i=-1;++i<256;x.fillRect(99+C(t+Math.atan(Y/X))*(X*X+Y*Y)**.5,Y/9,17,9))x.fillStyle=R(X=16*(S(t)>0?i:~i)&240,Y=15|i^(C(t)<0)*240)

Sep 18 2024 9:06 PM UTC

}// 140/140

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Voxel Rendering

u/SockTaters

The math in R() ensures the farthest voxels from the viewer are drawn first regardless of rotation. If a 2**X by 2**X grid is labeled the obvious way (with the numbers 0 to 2**(2*X)-1 left-to-right, top-to-bottom) and n is the index of a given corner, then i^n maps i to an ordering that starts at n's corner and ends at the opposite corner. Rectangles of 2**X by 2**Y might also work. The math in R() is somewhat obfuscated for golfing purposes.
u/SockTaters

n=[0,3,12,15][0];for(i=0;i<16;)console.log(i++^n)// try these 4 corner indices

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rodrigo.siqueira

remix of d/32392 by u/rodrigo.siqueira

function u(t) {

for(x.reset(j=18);j--;)for(i=791;i--;x.fillRect((t+5)%29*120-740+S(.1+i+S(j/4+t*2)/3)*R,540+C(i)*R*(.4+S(i+t)/4),4,4))R=40*j+9

Sep 18 2024 3:38 PM UTC

}// 126/140

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Floating thing

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freetobelee

function u(t) {

c.width=w=1920;h=1080;for(i=60;i--;)x.fillStyle=`hsl(${180+i*2},${50+i}%,${30+S(i/9-t)*20}%)`,x.fillRect(i*40+S(i/7+t)*100,0,40,h)

Sep 18 2024 1:08 PM UTC

}// 130/140

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Created with prompts and Claude.ai

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freetobelee

function u(t) {

c.width=1920;for(i=4e3;i--;)x.fillStyle=`hsl(${S(i/99+t)*99},99%,50%)`,x.fillRect(i%80*24,i/80*24+60*S(i/80-t),20,20)

Sep 18 2024 1:04 PM UTC

}// 117/140

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Created with prompts and Claude.ai