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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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rodrigo.siqueira

remix of d/36048 by u/rodrigo.siqueira

function u(t) {

x.translate(1e3,1624)
with(x)for(i=16;i--;c.style.filter=`invert(`)scale(1,5),beginPath(),arc(0,0,i*i,0,2),fill(),scale(.99,.2),rotate(T(i))

Jul 31 2026 1:17 PM UTC

}// 140/140

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Splash Spiral #spiral

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f8f82804

remix of d/9672 by u/yonatan

function u(t) {

c.width=480;x.shadowColor=`hsl(${9*t} 95%45%`;for(x.shadowBlur=i=15;i--;x.arc(0,0,18,S(t),9))x.setTransform(i-7,0,0,7,240,135);x.stroke()

Sep 7 2018 8:32 PM UTC

}// 137/140

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chunnoo

remix of d/183 by u/chunnoo

function u(t) {

w=960;c.width=2*w;h=540;x.beginPath();x.moveTo(0,0);x.bezierCurveTo(h*C(t*Math.PI)+w,h*S(t*Math.PI)+h,h*C(t)+w,h*S(t)+h,2*w,2*h);x.stroke();

Jun 8 2016 9:17 PM UTC

}// 140/140

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rodrigo.siqueira

remix of d/32378 by u/rodrigo.siqueira

function u(t) {

                                   `꩜`




for(x.reset(ට=5e3);ට;)x.fillRect(960+S(ට--/99)*ට/9,540+C(ට/99+.2)*ට/20+S(t*3)*(1-ට/5e3)*450,5,5)

Sep 6 2024 7:13 PM UTC

}// 140/140

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꩜ Bouncing line (spiral version) ꩜ #spiral

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HardlyProductive

function u(t) {

for(c.width|=i=0;i<9;i++){x.beginPath();
x.arc(200*i+100,540,100,0,9);
x.stroke();x.fillRect(200*i+85+100*S(7*t+i),525-100*C(7*t+i),30,30)}

Aug 17 2024 8:52 AM UTC

}// 139/140

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u/dabl03

Wow, if you change S to C it looks like a wave, if you change C to T it looks like jumping frogs :)

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nix

remix of d/8057 by u/nix

function u(t) {

for(c.width=i=1e3;i>1;i-=8)x.beginPath(),s=1+S(i+t),x.ellipse(300+99*s*s*1.1,300+t,h=99*(1+S((64+S(t)+i)+t/2)),h,1+s,-s,2),x.stroke()

May 9 2018 10:08 PM UTC

}// 133/140

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u/Lazy1337

#d3

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KilledByAPixel

remix of d/14717 by u/rodrigo.siqueira

function u(t) {

c.width|=X=Y=Z=1
for(i=4010;i--;i<2e3&&x.lineTo(960+(X*C(t)-Y*S(t))*45,1160-Z*23))Z+=(X*Y-Z)/39,X+=(Y-X)/13,Y+=X*(28-Z)/99
x.fill('evenodd')

Jun 23 2019 6:49 PM UTC

}// 140/140

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3D Lorenz Attractor

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ntsutae

remix of d/20669 by u/tomxor

function u(t) {

for(c.width&=i=8320;i--;)
x.fillRect(X=i&127,Y=i>>7,
k=S(8*t+X*X-3*Y*Y+19*X*Y)+.5,k)

Nov 18 2020 4:30 PM UTC

}// 84/140

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u/tomxor

#illusion This is messing with my eyes! looks like continuous rotating slices without ever getting beyond 90 degrees
u/joeytwiddle

Travelling without moving
u/ntsutae

I didn't have enough understanding and respect for the work

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Xen

function u(t) {

x.fillText(code,c.width=-1,9)

Jun 27 2019 9:07 PM UTC

}// 29/140

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29byte #Quine

u/Xen

#nano

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Konical

function u(t) {

x.fillRect(x.globalAlpha=.05,0,2e3,2e3)
for(i=2e4;i--;)for(j=7;j--;)x.clearRect(i*S(K=i*i*j-t/5)+765,i*C(K-C(t+i/697)/6)/2+760,v=j*S(t+j),t)

Jan 24 2023 5:55 PM UTC

}// 140/140

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new to this so i used a bit of code of someone else