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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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vgel

function u(t) {

for(i=c.width|=0,x.globalAlpha=.7;i-->0;X=1120+S(i/10)*1200,Y=i-10,x.lineTo(X,(Y-S(X*Y*Y+t/Y**.5*13)*40)/Y**.5*-10+900));x.stroke()

Dec 17 2023 10:49 PM UTC

}// 131/140

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waves

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danny@hille.dk

remix of d/29146 by u/danny@hille.dk

function u(t) {

i=t*60;w=63&i/4;x.fillRect(960-i/2-w,i,i+w*2,1)

Dec 17 2023 9:21 AM UTC

}// 47/140

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47b christmas tree - #waitforit #minimalistic #ChristmasTree

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rodrigo.siqueira

remix of d/29130 by u/rodrigo.siqueira

function u(t) {

for(t?Y++:Y=0,X=3e3;X--;x.fillRect(X,Y,1,f(X/2e3-.6,Y/1500)))f=(x,y,n=0)=>y?f(x*x-y*y,T(.8*x*y)*3+.6,n+1):C(n/3-t/3)/2+.5

Dec 15 2023 12:33 PM UTC

}// 121/140

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16-arm superspiral #fractal #spiral

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taupelink

remix of d/29086 by u/taupelink

function u(t) {

for(i=273;i--&&t<2;x.fill(x.stroke()))x.beginPath(x.fillStyle=['#D75','#DEF','#234'][i%3]+(i%7%2)),x.arc(i%13*180,i%7*180,i/t**t,i,i+3+t)

Dec 12 2023 10:26 PM UTC

}// 137/140

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d/29121

u/taupelink

created on ios/safari

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rodrigo.siqueira

remix of d/28863 by u/rodrigo.siqueira

function u(t) {

c.style='filter:sepia(.4'
for(X=Y=t,i=9e4;i--;x.fillRect(X*190-710,Y*50+1300-X*70,.1,t<4))
Y=(i/Y&2)*7+(Y-X)/2+X*S(X/3),X+=Y/2

Dec 11 2023 1:01 AM UTC

}// 126/140

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Marbled Paper Patterns (paper marbling technique)

u/tomxor

I've been playing with the idea of implementing a remix tree view and stumbled into this massive one... The root is saturn d/10534, 60 parents up, which seems kind of appropriate :)

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danny@hille.dk

remix of d/29089 by u/danny@hille.dk

function u(t) {

for(i=c.width+=0;i--;)x.fillRect(960+(f=C(t*3-i/99))*100-200*(C(4*i/1e3-t*3)*C(i*i+t)**2),i,m=(1.5+f)*5,m)

Dec 9 2023 8:24 PM UTC

}// 106/140

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Ribbon remix

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taupelink

remix of d/28945 by u/taupelink

function u(t) {

eval(unescape(escape`景爨椽㐰〻椭ⴾ㤰〪琻砮晩汬⡸⹳瑲潫攨⤩⥸⹢敧楮偡瑨⡸⹦楬汓瑹汥㵛✣㈶㤱✬✣䙅䔱✬✣䉄䘱❝孩┷┳崩ⱸ孩┱㐿❡牣✺❲散琧崨椥㈰┹⨲㐰Ⱪ┸┵⨲㐰Ⱪ⩴⨪琬樽椪㈫琬樭㔫椥㔪琩ⱸ⹬楮敗楤瑨㵴`.replace(/u([^D].)/g,'$1%')))

Nov 27 2023 6:05 AM UTC

}// 140/140

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d/28975

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baon

remix of d/28950 by u/baon

function u(t) {

for(c.width|=0,X=Y=0,i=2e3;i--;x.fillRect(960+X,540+Y,10,10))
X=400*C(i)*S(2-0.1*S(10*t+X/20)**8+i/2),Y=-400*S(i+0.7**C(i)**0.05)

Nov 25 2023 7:34 AM UTC

}// 130/140

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#heart

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baon

remix of d/28936 by u/baon

function u(t) {

for(c.width|=i=500;i--;x.fillRect(960+X,540+Y,10,10))
X=400*C(i) * S( S(t*2) + t + i/2 ), Y=-400*S(i + 0.7**C(i)**0.05)

Nov 24 2023 8:39 AM UTC

}// 120/140

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#heart

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timothytomato

remix of d/28877 by u/Xen

function u(t) {

c.style="filter:invert("
for(i=490;i>10;i--){x.strokeRect(900+S(i+t)*i*15,399+C(i+t)*i*2,i,i);x.strokeStyle=R(i,i*2,255,.5)}

Nov 23 2023 10:00 PM UTC

}// 124/140

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Black hole

u/Xen

niice