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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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Tekmap

remix of d/33932 by u/joeytwiddle

function u(t) {

  for(c.width=800,X=Y=i=2e4;i--;x.fillRect(400+X*99,225+Y*99,2,2))j=i>>8,X=C(a=Y+j)+C(b=X+t+j*9),Y=C(a)+S(b),x.fillStyle=`hsl(${i},90%,50%)`

Jul 6 2026 1:40 AM UTC

}// 140/140

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Tekmap

remix of d/12491 by u/rodrigo.siqueira

function u(t) {

t||(a=b=9)
for(i=8e4;i--;)x.fillStyle=`hsl(9,45%,${T(t/9)*50}%,25%)`,x.fillRect(980+(b+=.0004)/C(a+=Math.random()),540+b/S(a/9e3),1,2)

Jul 6 2026 1:29 AM UTC

}// 134/140

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RwaterC

function u(t) {

m=40;z="𐃀𐇀𐇀𐏠🏠🻸𗻿𓎟𑿼𐵰𑮠𓿠𓿰𗳰𗁰𐀰";for(i=256;i--;){b=i&15;z.codePointAt(i>>3)>>15-b&1&&x.fillRect(b*m,(i>>4)*m,m,m)} //smaller

Jul 5 2026 12:02 PM UTC

}// 117/140

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RwaterC

function u(t) {

j=40;z="ÔÔÔôćôĒČēG³3Đ!/´SôSĄĄD";for(i=0;i<256;i++){(z[i>>3].charCodeAt(0)-20>>7-(i&7))&1&&x.fillRect((i&15)*j,(i>>4)*j,j,j)}

Jul 5 2026 4:17 AM UTC

}// 134/140

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taupelink

remix of d/35698 by u/taupelink

function u(t) {

f=u=>Math.max(8*S(u/3)**2+8*S(h),(u%8-1-w)**2);for(i=k=1e4;i--;x.fillRect(640+r*C(h=i/k*4),r*S(h),w=t/4,!(f(24*t**.5)+f(t+18*h)&7)*w))r=90*t

Jul 5 2026 3:24 AM UTC

}// 140/140

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d/35804

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hirth27

function u(t) {

for(c.width=i=2000;i--;x.fillRect(970+r*C(a),550+r*S(a),8,1))j=i>>9,a=i/1+S(j+t),r=(j*1+t*22)%900*(1+S(a*8+j*t)/3),x.fillStyle=R(r/1,9,j*27)

Jul 5 2026 2:23 AM UTC

}// 140/140

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hirth27

function u(t) {

for(c.width=i=2000;i--;x.fillRect(950+(r=1.01**i)*C(a=i/+t),640+r*S(a),9,9))x.fillStyle=R(i/1,27,27-i/9)

Jul 5 2026 1:51 AM UTC

}// 104/140

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chaos before order

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46uuuu

function u(t) {

c.width=1920
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,0,50,t*80)

Jul 4 2026 3:09 AM UTC

}// 70/140

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taupelink

remix of d/35696 by u/taupelink

function u(t) {

for(i=z=4e3;i--;x.fillRect(240*t,i/3,z+=9+6*C(z*C(z+t%3/z*4)+i/r/z),3))x.fillStyle=R(r=272-(z=9+7*C((z+4+2*(t&3)^i%1080/z/4)/8))*z*3,r,r,.7)

Jun 29 2026 4:29 AM UTC

}// 140/140

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d/35708

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PotatoImaginator

remix of d/35992 by u/PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞🐰𒡦𫱲𚁩🐱𜠻𪐭𛐻𚑸𛡦𪑬𫁒𩑣𭀨𭐽𜠰𜀪𚁩𛑴𙐱𚐭𜰴𜀬𭐯𜠫𜠸𝐬𝀰𜀬𜐰𜐩𒡸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻嵮𭀥𜐰𚠳𝡽𛀹𞐥𛀵𜀥𚑠𒡸𛡡𬡣𚀹𝠰𛀵𝀰𛐲𝐰𚡓𚁴𙐱𚡍𨑴𪀮𤁉𚐬𝰵𛀰𛀷𚐊𮀮𩡩𫁬𚀩`.replace(/u../g,'')))

Jul 28 2026 9:59 AM UTC

}// 123/140

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Colourful Bouncing #ball on #stairs

u/PotatoImaginator

c.width^=0 for(i=12;i--;)x.fillRect(u=200*(i-t%1)-340,u/2+285,400,101) x.fillStyle=hsl(${~~t%10*36},99%,50%) x.arc(960,540-250*S(t%1*Math.PI),75,0,7) x.fill()