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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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Current theme challenge: #Food

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remix of d/35884 by u/rg

function u(t) {

eval(unescape(escape`愽稽㸨稪稩⨪⠮㔫琯㤰⤻昽甽㹡⡡⡡⡵┸ⴴ⤭㐩ⴶ⤻景爨椽欽ㅥ㐻椭ⴻ砮晩汬剥捴⠹㘰⭲⩃⡨㵩⽫⨶⸳⤪䌨琯椩ⰵ㐰⭲⩓⡨⽴⩩⤬琼ㄳⰡ⡦⠴⩴⤫昨琫株ㄴ⤦㌩⤩爽㠰⬸〪琠`.replace(/u([^D].)/g,'$1%')))

Jul 12 2026 4:57 AM UTC

}// 127/140

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rodrigo.siqueira

remix of d/35862 by u/taupelink

function u(t) {

f=u=>8*C(1/u+t/3);for(i=k=1e4;i--;x.fillRect(960+r*C(h=i/k*6.29),540+r*S(h),S(8*t**.8+f(h*2)),t/4))r=90*t

Jul 10 2026 9:56 PM UTC

}// 105/140

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Circle distortion

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DazeWare

remix of d/35836 by u/DazeWare

function u(t) {

for(i=z=1080;i--;x.fillRect(500*t,i,i,z/=.7-S(i/r)/e))q=z%2,x.fillStyle=R(r=1+(z=z%4+z*.4|0)**3/8,r,r),z+=3+3*C(i/r*T(e=++z*9+t/.7/z))

Jul 7 2026 3:24 AM UTC

}// 134/140

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rodrigo.siqueira

remix of d/36042 by u/rodrigo.siqueira

function u(t) {

x.translate(540,1500)
with(x)for(i=16;i--;c.style.filter=`invert(`)scale(1,4),beginPath(),arc(0,0,i*i,0,1),fill(),scale(.996,1/4),rotate(5)

Jul 31 2026 1:39 AM UTC

}// 139/140

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Thorn Vortex

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PotatoImaginator

remix of d/35992 by u/PotatoImaginator

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁞👰👍𨑴𪀮𤁉𒡦𫱲𚁩🐱𜠻𪐭𛐻𚑸𛡦𪑬𫁒𩑣𭀨𭐽𜠰𜀪𚁩𛑴𙐱𚐭𜰴𜀬𭐯𜠫𜠸𝐬𝀰𜀬𜐰𜐩𒡷𪑴𪀨𮀩𩡯𫡴🐢𜐴𝑰𮀧𘠬𭁲𨑮𬱬𨑴𩐨𞐶𜀬𝐴𜀩𛁲𫱴𨑴𩐨𭠽𜠪𬀪𭀩𛁦𪑬𫁔𩑸𭀨𘡜𭑻𜑦𝠱𝡽𘠬𛐱𜀰𛐨𭰽𜠵𜀪𤰨𭀥𜐪𬀩𚡓𚁶𚐩𛀵𝐭𭰯𥀨𭠩𚐻`.replace(/u../g,'')))

Jul 28 2026 2:23 PM UTC

}// 140/140

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#emoji falling down the #stairs

u/PotatoImaginator

c.width^=p=Math.PI for(i=12;i--;)x.fillRect(u=200*(i-t%1)-340,u/2+285,400,101) with(x)font="145px'",translate(960,540),rotate(v=2*p*t),fillText("\u{1f616}",-100-(w=250*S(t%1*p)*S(v)),55-w/T(v))

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luta

function u(t) {

c.width=240;for(n=i=64;i--;)for(j=n;j--;)for(k=n;k--;)i&j||i&k||j&k||x.fillRect(120+(2*i+k+j-n)*C(t)-(3*k+j-n+2)/1.732*S(t),120-1.633*j,1,1)

Jul 28 2026 4:04 AM UTC

}// 140/140

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#sierpinski

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KilledByAPixel

remix of d/34603 by u/KilledByAPixel

function u(t) {

c.width|=A=198
for(x.fillText('🧇',0,12);A;R+=.01)((X=t+(e=R/99)*A-R)^R)%3||x.drawImage(c,(X+R)%1*11+1,R=1,e*9,14,A--*10,540-4/e,20,9/e)

Jul 23 2026 4:12 AM UTC

}// 135/140

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Wafflestein 🧇

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rodrigo.siqueira

remix of d/35927 by u/taupelink

function u(t) {

for(m=t?0:2e4;m--;x['stroke']())i=m&350,x.beginPath(x.strokeStyle=`hsl(${m**.4},99%,${54*S(i/22)}%`),x['arc'](m%2197-i+80,m*m%1081,i,i,i%5)

Jul 18 2026 12:55 AM UTC

}// 139/140

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Fuzzy Network

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taupelink

remix of d/35910 by u/taupelink

function u(t) {

f=u=>16*S(u+t/3)**2+(u%8-4-S(h-8*t))**2;for(i=4e3;i--;x.fillRect(i/2,r,6,6))r=135*t,h=i/840,x.fillStyle=f(t)+f((5+t|0)*h)&15?'#13A3':'#FECC'

Jul 16 2026 1:07 AM UTC

}// 140/140

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d/35913

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taupelink

remix of d/35827 by u/taupelink

function u(t) {

for(i=r=h=1e4;i--;x.fillRect(960+60*r*C(h),540+60*r*S(h),r+h/2&&t<5,!!(2*S(2*r+2*h)+4*r&2*S(h*18)&3)))[r,h]=[5+4*S(r+6*h),3.14*C(2*r-3*h+t)]

Jul 10 2026 2:53 AM UTC

}// 140/140

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d/35856