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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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danny@hille.dk

remix of d/26026 by u/danny@hille.dk

function u(t) {

for(i=2e3;i--;)x.fillRect(i,t*240,.1,C(t-i/256)*64^C(t+i/512)*128)

Aug 25 2022 3:51 PM UTC

}// 66/140

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It's not a fractal? 66 byte remix

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mxfh

remix of d/23558 by u/mxfh

function u(t) {

this.b||(I=new ImageData(w=2048,w),b=new Int32Array(I.data.buffer))
for(i=3e6;i--;b[i]=b[i-w]-(i-Y&Y+i)*t)Y=i*w
x.putImageData(I,0,0)

Aug 17 2022 11:41 PM UTC

}// 133/140

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new weird mountain ranges

u/mxfh

mostly this (lol) just answers my own question, if the buffer can be reused in source of this remix.
u/magna

Keeps on giving

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rodrigo.siqueira

remix of d/25894 by u/rodrigo.siqueira

function u(t) {

for(K=X=-540;X<-K;X++)for(Y=K;Y<-K;Y++)h=S(2*Math.atan(Y/X)+Math.log(Math.sqrt(X*X+Y*Y))*9),h<S(X*Y/h)&&x.fillRect(960-X,Y-K+t,1,t<.1)

Jul 30 2022 4:57 PM UTC

}// 134/140

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Spiralnebel (Spiral Nebula), a more accurate translation from the original C64 code. #spiral Original code from 1984 by Norbert Treitz, für Phantasie und Logik.

u/andrea270872

Wow!
u/rodrigo.siqueira

"Spiele mit Computer-Grafik. Für Phantasie und Logik" (Norbert Treitz, 1984), page 63. Short video showing the book: https://twitter.com/quasimondo/status/155338…

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New_Core

function u(t) {

for(c.width=j=200;j--;x.beginPath(x.strokeStyle=R(a*99),x.stroke()))for(a=S(j/9+t),i=21;i--;)x.lineTo(i*99,j*1+3*C(b=t+a+i)*S(b))

Jul 21 2022 10:23 AM UTC

}// 129/140

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rodrigo.siqueira

remix of d/25787 by u/cantelope

function u(t) {

for(x.fillRect(0,0,w=2e3,w),i=1e4;i--;x.clearRect(w/2+S(p=T(i^S(a=i+t)*f))/(Z=T(a)*S(f*p+t)/400),w/4+C(p)/Z,K=p/9+3,K))f=i**.9%1

Jul 11 2022 12:08 AM UTC

}// 128/140

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Spiral burst

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jdspugh

remix of d/25780 by u/Ghoust

function u(t) {

h=40;for(X=c.width=214;X--;){
e=X/19;h+=S(e*S(e)+C(e))>0?1:-1
for(Y=120;Y--;x.fillStyle=Y<h?R(b=t*Y*S(X/70)+t*9,b/3):0)x.fillRect(X,Y,1,1)}

Jul 7 2022 4:41 PM UTC

}// 139/140

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Mountain Sunrise, Animated

u/Ghoust

Love it!

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rodrigo.siqueira

remix of d/25761 by u/rodrigo.siqueira

function u(t) {

t?y+=S(y*7+t)*3:(y=98)
for(i=2e3;i;i--)x.fillStyle=R(A=(B=i>y*7?C(S(i*y*i))*(.3+C(8+t)/6):C(t/2-2))*i/1.2,A/2,y*B*2),x.fillRect(t*230,i,9,1)

Jul 1 2022 6:32 PM UTC

}// 140/140

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Mountains at Sunrise

u/tomxor

Getting a bit of a celestial feeling from the sunrise. Maybe sunrise on a distant moon.

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BriSeven

function u(t) {

x.save()
x.translate(940,550)
x.rotate(t*30)
x.font=4*t+'px a'
x.fillText(String.fromCodePoint((14000+((t*240|0)))),30*t,30*t)
x.restore()

Jun 28 2022 11:09 AM UTC

}// 138/140

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string ring

u/rodrigo.siqueira

The vortex of Chinese concrete poetry #spiral
u/CazadorDePerros

wow, lovely!

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taupelink

remix of d/25524 by u/taupelink

function u(t) {

eval(unescape(escape`景爨欽㈵㜬洽琿〺㉥㐻洭ⴻ砮晩汬⡸⹳瑲潫攨⤩⥸⹢敧楮偡瑨⡲㵭⨪⡧㵭┨㈳⼵ㄩ⤩Ⱪ㵭╫ⱸ⹬楮敗楤瑨㵲⽩┱ⱸ⹦楬汓瑹汥㵒⡩ⱩⱩⱭ⼸攳⤬砮慲挨津㤪欫椪䌨洩Ⱘ洯㝼〩┵⩫⭩⩓⡭⤬爬洬洫㤪未札㘩`.replace(/u([^D].)/g,'$1%')))

May 30 2022 12:01 PM UTC

}// 140/140

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d/25568

u/KilledByAPixel

nice

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UEZ

function u(t) {

eval(unescape(escape`󩭯󬬨󨼮󭽩󩍴󪌽󪜽󜝥󜼻󪜭󟜱󛼱󝬻󮌮󩭩󫍬󤭥󨽴󚌹󜌪󚍘󚬲󚽙󛜶󚜬󞜰󚬨󦌯󜬭󦜭󮬫󝜩󛌶󚽺󛌹󚬨󜬭󮬩󚜩󦌽󪜥󞌬󦜽󪜯󜜲󞌬󮬽󤼨󤼨󦜫󠼨󦌪󜼩󚜫󤼨󦌫󤼨󦜪󜼩󚜫󭌪󜼩󚬪󜼯󝬬󮌮󩽬󫽢󨝬󠝬󬍨󨜽󜜭󮬪󝌻`.replace(/u../g,'')))

May 22 2022 1:08 PM UTC

}// 118/140

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Remix of #25511 by TGY