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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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garettridge

remix of d/3371 by u/Xen

function u(t) {

c.width=1920;for(j=64;j--;)for(i=125;i--;x.fillRect(i<<4,j<<4,16,16))a=1+S((i&j)/+t*9),x.fillStyle=R(j,0,i,a/1.6)

Jan 13 2018 6:25 PM UTC

}// 113/140

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u/Xen

nice :-)
u/garettridge

Once character removal difference, thought it looked cool

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taupelink

remix of d/32051 by u/taupelink

function u(t) {

f=u=>((u%6-3)**2-4)**2&11;for(i=2e4;i--;x.fillRect(5*i%9*240+8*r*C(h),i%5*240+8*r*S(h),t<5,f(3*h)==f(r/2+C(h+i%45/19*h))))r=i*t%12+2,h=r*i%7

Jun 24 2024 12:34 AM UTC

}// 140/140

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d/32054

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Xen

remix of d/3224 by u/rgarner

function u(t) {

for(c.width|=i=200;i--;x.fillRect(900+i*C(Z),200-i*S(Z),i,i))x.rotate(.006),x.fillStyle=`hsla(${Z=t*i/2},99%,50%,.6)`

Sep 30 2017 11:08 PM UTC

}// 117/140

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u/rgarner

This is indeed a nice remix :)

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dogspace

remix of d/6861 by u/sj_

function u(t) {

x.shadowBlur=99;
x.shadowColor=`hsl(${t*60},100%,50%)`
x.fillRect(
 c.width/2 + C(t) * 500-(t*4),
 c.height/2 + S(t) * 500-(t*4),
20,20);

Feb 13 2018 4:10 AM UTC

}// 137/140

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u/joeytwiddle

Painting with shadows :-o

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rodrigo.siqueira

remix of d/34233 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=1.5e4,i);i--;x.clearRect(960+S(l+=t)/S(q=i%2<.5?n:3.2-n)/(Z=C(l)/S(q)+1)*(h=540)*2,h+C(q)/Z*h,4,4))n=(l=i**.9)%2

Aug 26 2025 7:31 PM UTC

}// 133/140

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Outside the Stanford Torus #space #torus

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katkip

remix of d/9141 by u/Xen

function u(t) {

for(Z=i=t*99%2e3|0;i--;x.fillRect(C(T(Z)*S(i/t))/500*t,500+i*C(i*t),35*T(t),15*C(t/i)))x.fillStyle=`hsla(${Z/i*t|i},99%,50%,.1)`;

Aug 6 2018 3:41 PM UTC

}// 129/140

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#remix_chain

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andrea270872

function u(t) {

c.width|=0
x.lineWidth=4
for(i=8;--i>0;x.fillStyle='#7'+i*9)A=[99,99+120*i,1/i*t%(i*2)*99,99],x.fillRect(...A,A[2]=1600),x.strokeRect(...A)

Feb 12 2020 10:57 PM UTC

}// 139/140

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"Getting there..." procrastination-style

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Smiley1000

remix of d/24813 by u/Smiley1000

function u(t) {

for(h=0;h<108;h++)for(w=0;w<192;w++){
f=o=>(C((w*0.005+t+o/3)*6.3)<h/54-1)*255
x.fillStyle=R(f(0),f(1),f(2),1)
x.fillRect(w*10,h*10,10,10)
}

Jan 22 2022 1:05 PM UTC

}// 140/140

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colorful Cosine Wave! (with dirty Tricks)

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heyitsguay

remix of d/10517 by u/heyitsguay

function u(t) {

for(c.width|=j=w=800;j--;)with(x)rotate(1+0.002*S(t/3)),beginPath(),arc(960+j,w,j*(1.2+S(t/3+j)),0,7),stroke()

Oct 17 2018 5:45 AM UTC

}// 110/140

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tomxor

remix of d/24801 by u/rep_movsd

function u(t) {

for(c.style.filter='invert(1',t?i=5e4>>t:G=X=Y=.8;i--;x.fillRect(960+X*19,540+Y*29,.2,.2))Z=X,X=G+Y*1.01-Y**3/7e3,G=4*X*X/(1+X*X)-X*.8,Y=G-Z

Jan 20 2022 11:56 PM UTC

}// 140/140

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Smolr Fluffier Gumowski-Mira Mythic Bird