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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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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jimmyolang

function u(t) {

c.width=1920
a="pick meee"
x.font=Math.round(t%5*30)+'px serif'
x.fillStyle=`hsl(${t*50%360},100%,50%)`
x.fillText(a, 960, 540);

Oct 13 2024 2:46 AM UTC

}// 129/140

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u/SockTaters

Welcome to Dwitter!

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Agnes

remix of d/32558 by u/veubeke

function u(t) {

x.font='20em"A'
for(i=22;i--;)for(y=10;y--;x.fillText(i==(y+~~(.25+t/1.57))%10&&i%2?"🖕":'✋',i*100+(i%2?_:-_)-200,100+_+y*300))_=S(t*4)*100

Oct 9 2024 9:36 AM UTC

}// 138/140

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Periodically rude all hands on deck

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sydwei

function u(t) {

c.width=1920
for(i=0;i<200;i++)
x.fillRect(1000+S(t*i)*150,C(t*i)-200,850,10*~x.rotate(t/12), x.fillStyle=R(10+25*i,10*i,15*i))

Oct 9 2024 4:43 AM UTC

}// 127/140

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sydgu fall 24 sketch 1

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HardlyProductive

function u(t) {

for(c.width|=r=999;r--;){
for(theta=6.28;theta>0;theta-=0.2){
x.fillRect(999+r*S(theta+r*C(theta+t)/100),500+r*S(theta),3,3)
}
}

Sep 27 2024 6:46 AM UTC

}// 128/140

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baegus

function u(t) {

with(x){
reset()
translate(960,560)
for(i=0;i<300;i++){
rotate(S(i*400))
fillStyle=R(i*3,i*.6,i*.4)
fillRect(i*i*S(t)**5,i,200,40)}}

Sep 25 2024 9:31 PM UTC

}// 132/140

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Tentangled - light version

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baegus

function u(t) {

with(x){reset()
fillRect(0,0,1e4,1e4)
translate(920,530)
for(i=300;i--;){rotate(S(i*400))
fillStyle=R(i,i)
fillRect(i*i*S(t)**5,i,200,40)}}

Sep 25 2024 9:24 PM UTC

}// 139/140

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Tentangled

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tem

remix of d/32313 by u/tem

function u(t) {

r=1+(t/2|0)*.007-(t/4|0)*.004
for(i=c.width|=2e3;i--;c.style.filter=`invert(`)x.fillRect(1e3+(j=t%2+i*r)*S(j)/2,540+j*C(j|0)/2,s=i/69,s)

Sep 24 2024 8:32 AM UTC

}// 136/140

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Cycle though the endless flow

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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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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) {

for(i=2e3;i--;)x.fillRect(960+S(a=i/99+t)*i/2,540+C(a)*i/2,10,10,x.fillStyle=`hsl(${i/5+t*99},99%,${50+S(i/50+t)*25}%)`)

Sep 18 2024 12:13 AM UTC

}// 120/140

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made with text prompts only with Claude.ai

u/rodrigo.siqueira

🍭