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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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anthonylewis

remix of d/7718 by u/anthonylewis

function u(t) {

w=c.width^=0
for(i=30;i--;)
Z=w/(i-t%2+1),x.beginPath(),x.arc(960,540,Math.abs(Z),0,7),x.stroke()

Apr 21 2018 1:43 AM UTC

}// 97/140

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And now a round tunnel...

u/magna

#tunnel

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anthonylewis

remix of d/7718 by u/anthonylewis

function u(t) {

w=c.width^=0
x.globalAlpha=.1
for(i=30;i--;)
Z=w/(i-t%2+1),x.fillRect(960-Z/2,540-Z/2,Z,Z)

Apr 21 2018 1:33 AM UTC

}// 90/140

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u/Agnes

Really classy shades of grey... looks like something you'd see at a museum.
u/BuRRak

This is so satysfing to watch
u/rjro

dat hotline bling dat James Turrell aesthetic
u/BuRRak

This is mindblowing because it is all the same color
u/lionleaf

#tunnel

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BuRRak

function u(t) {

eval(unescape(escape`景爨椽㉥㌻椭ⴻ砮晩汬却祬攽刨〬〬ㄲ㠫匨椯㈵〫琩⨸〩⥸⹦楬汒散琨〬椬㉥㌬ㄩ㭸⹦潮琽∵捭⁥∻景爨椽㐻ⴭ椻⥸⹦楬汔數琨却物湧⹦牯浃潤敐潩湴⠱㈸〳〫椩ⰱ㤲〭⡩⩴⨶〥㈱㔰⤬匨琩⨳㈫㔴〫椪⨵⤻`.replace(/u(..)/g,"$1%")))

Apr 20 2018 8:55 PM UTC

}// 138/140

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Not so lonely anymore

u/lionleaf

#fish #ocean #water
u/BuRRak

#<b>test</b>
u/joeytwiddle

#aquarium #river #sea #seaside

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Agnes

function u(t) {

for(c.width|=i=Q=255;i--;)x.fillStyle=R(f=2*i/Q,f*Q,i?f:Q,i?1:0.9),e=Q*(4+f*S(f+t)),x.rotate(f/e),x.fillRect(!!i*e,i?f*700:Q,s=i?25*f:3e3,s)

Apr 20 2018 4:59 PM UTC

}// 140/140

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Spooky sea monster under the stormy seas.

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BuRRak

function u(t) {

for(i=1080;i--;x.fillStyle=R(0,0,128+S(i/250+t)*80))x.fillRect(0,i,1920,1)
x.font="5cm e"
x.fillText("🐟",1920-(t*60%2150),S(t)*32+540)

Apr 20 2018 4:24 PM UTC

}// 134/140

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A lonely fish

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mohammedamarnah

remix of d/7670 by u/mohammedamarnah

function u(t) {

v=c.width=1920;h=c.height/2;
for(i=0;i<100;i+=0.3)
x.fillRect(S(3*t*i)*500+v/2, S(2*t*i)*500+h, 10, 10)
x.stroke()

Apr 20 2018 4:09 PM UTC

}// 114/140

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u/BuRRak

Golfed down to 83 characters: c.width|=v=500 for(i=0;i<100;i+=.3) x.fillRect(S(3*t*i)*v+960,S(2*t*i)*v+540,10,10)
u/Galaxtone

@BuRRak SyntaxError: Unexpected token for
u/BalintCsala

I guess that should be a new line

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BuRRak

function u(t) {

for(i=1080,v=212;i--;x.fillStyle=R(T(i/v+t*60/12)*v,T(i/v+t*60/18)*v,T(i/v+t*60/24)*v))x.fillRect(0,i,1920,1);

Apr 20 2018 3:55 PM UTC

}// 110/140

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BuRRak

function u(t) {

U=I=0;
Z=Array(99).fill(0)
for(O of Q="")eval({'+':'Z[I]++','-':'Z[I]--','>':'I++','<':'I--','.':'U+=String.fromCharCode(Z[I])'}[O])
throw U

Apr 20 2018 3:23 PM UTC

}// 140/140

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Best brainfuck interpreter I could do in 140 characters, super bad code. You need to change the Q variable to your code for it to run. There are no loops or an input, but the output works just fine.

u/BuRRak

The Q variable declaration is there just so you know what to edit, it could be left out as it is not used anywhere in the code again
u/BuRRak

The output also throws a 0 before every other output

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Blane

function u(t) {

c.width^=0;with(x){for(i=999;i--;)fillRect(960*(1+T(9e2/(i-1))),540*(1-T((9e9)/(i**.5+1e-8*t))),10,10)}

Apr 20 2018 3:13 PM UTC

}// 103/140

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Xen

remix of d/7713 by u/anthonylewis

function u(t) {

c.width|=0,x.globalAlpha=.2
for(i=99;i--;x.arc(S(t+7*t%i)*400+960,C(t+i%t)*400+540,i,0,6.28))x.beginPath(x.fill())

Apr 20 2018 7:09 AM UTC

}// 114/140

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