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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: #Food

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KilledByAPixel

function u(t) {

c.style.filter='invert('
x.font="13em'"
x.fillText(["That's fine, dude.","I'm not mad at you."," - Renee Nicole Good"][t*60|0],30,280+2e4*t)

Jan 10 2026 2:24 PM UTC

}// 140/140

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💔

u/cantelope

was she one of the thousands of brown people they murdered, or no? oh right. she was the white woman

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rodrigo.siqueira

remix of d/34626 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert()sepia(`
for(𝕏=X=Y=t,i=3e4;i--;𝕏=X,x.fillRect(Y*2e3+410,X*3e3-910,t<1,.1))X=(X*X-Y*Y*.4)%5+.29,Y=C(2*𝕏*Y+1+i%5/15)+.1

Jan 10 2026 2:05 AM UTC

}// 140/140

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Plant i%5

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rodrigo.siqueira

remix of d/34674 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert()sepia(`,X=t,Y=t*99-450;for(i=1e4;--i;x.fillRect(912+5*Y+25*X,7*(X-Y)+640,.2,t<4))X=Y*.9993-(((Y=9-X)<0)*X+9)+Y/9

Jan 7 2026 2:57 PM UTC

}// 136/140

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Splash of spirals

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rodrigo.siqueira

remix of d/34831 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert()sepia(.7)'
for(i=2e4;i--;x.fillRect(940+X*15,480-Y*62,t<2,.1))
F=i%(2+40/(t)),X=4*F*S(k=i*i),Y=F*C(k)/2-20/(F+1)

Jan 25 2026 10:51 PM UTC

}// 136/140

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Cosmic funnel #spacetime

u/ximavus

#einsteinstheoryofrelativity

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rodrigo.siqueira

remix of d/34835 by u/DazeWare

function u(t) {

c.style.filter='invert()sepia()'
for(i=2e4;i--;x.fillRect(960+70*F*T(k)+210*C(w),500-X*70+F*40,t<2,.1))F=i%(2+6/t),X=F*S(k=i/t)-4*S(w=k/9)-F

Jan 25 2026 2:41 AM UTC

}// 140/140

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Microscopic creature

u/Axioplase

Do not put your face near the top of the egg... #alien

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dee-gomma

remix of d/34783 by u/dee-gomma

function u(t) {

for(c.width=n=y=99,f=_=>(_%=9)<4?_:9-_;y--;x.fillRect(0,y,n,1))x.fillStyle=`hsl(${q=t*9} 90%${26+9*f(q+2*f(y/3))}`
x.strokeText(code,n-q,32)

Jan 20 2026 5:34 PM UTC

}// 140/140

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#rasterbars #quine

u/magna

Great!
u/lewdev

I didn't know about strokeText. It's a neat way to write in black without needing to update fillStyle which was already being used..
u/ximavus

strokeText looks useful actually I forgot about it

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rodrigo.siqueira

remix of d/34778 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert()sepia()'
for(i=1e4;i--;x.fillRect(960+X*54,540-Y*54,t<2,.1))
F=i%(4+2/t),X=F*S(k=i/t)-4*S(w=k/4),Y=F*C(k)+4*C(w)

Jan 20 2026 1:02 PM UTC

}// 136/140

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Concentric Loop 5

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rodrigo.siqueira

remix of d/34778 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert()sepia()'
for(i=1e4;i--;x.fillRect(960+X*54,540-Y*54,t<2,.1))
F=i%(4+2/t),X=F*S(k=i/t)-4*S(w=k/3),Y=F*C(k)+4*C(w)

Jan 20 2026 1:02 PM UTC

}// 136/140

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Concentric Loop 4

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dee-gomma

function u(t) {

for(y=n=2e3,f=_=>(_%=96)<49?_:96-_;y--;x.fillRect(0,y,n,1))x.fillStyle=`hsl(${t*26} 90%${13+1.5*f(t*96+2*f(y/6))}`

Jan 20 2026 1:22 AM UTC

}// 114/140

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Old school #rasterbars effect

u/dee-gomma

Inspired by "Tecno Skull" Blues Brothers cracktro by TDT/TRSI
u/ximavus

nice!

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KilledByAPixel

remix of d/34741 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󨼮󭽩󩍴󪌦󟝩󟜶󜬷󜬻󪜭󛜻󩌽󣝡󭍨󛭭󪝮󚌨󦜽󪜯󜜸󜌭󜜷󚜪󚬲󛌨󦌪󛬵󛜱󞌩󚬪󜬩󛍸󛭦󪝬󫍓󭍹󫍥󟝘󟽤󟌵󟼧󘼰󜬵󙼺󩌼󜬴󟼧󘽦󩭦󙼺󙼣󨬰󜬧󞬧󘼵󝜵󙼬󮌮󩭩󫍬󤭥󨽴󚌳󞜫󦌯󜬫󦌯󝌸󚭃󚍘󛼸󛝩󛼸󜌰󛝴󚬶󚜬󜼰󚽙󚽘󛼱󜬪󤼨󦌯󜜶󛝴󚜬󜬬󪜿󛬳󞬹󞜩󚝘󟝩󙜹󞜻`.replace(/u../g,'')))

Jan 19 2026 11:55 PM UTC

}// 140/140

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Norway 🇳🇴 #flag 🏅