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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/26996 by u/rodrigo.siqueira

function u(t) {

for(m=n=i=1e4;i--;x.fillRect(m+960,n+540,.3,t<5)){s=6*T(i*41)+frame,o=s*Math.PI/18;m=m/7+780*C(o/2);n=n/1.9+220*C(o+8)}

Apr 3 2023 7:41 PM UTC

}// 119/140

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Infinity strip

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taupelink

remix of d/18785 by u/taupelink

function u(t) {

for(f=.5,i=d=e=1e3;i--;x.fillRect(960+d*60*C(e),540+d*40*S(e),f,f))r=12+Math.random(z=99)*z|0,d=r/6+f*C(d),e=r+f*S(d)/r*9,f=r%.85+.5/f**.5

May 14 2020 5:49 PM UTC

}// 138/140

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d/18786

u/rep_movsd

#underrated

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stefano

remix of d/28254 by u/stefano

function u(t) {

c.width|=0;for(i=0,n=60,o=440,u=960;i<=n;p=i/n*6.28,w=p+t,h=100,x.moveTo(u+S(p)*o,h+C(p)*h),x.lineTo(u+S(w)*o,880+(C(w)*h)),++i)x.stroke()

Aug 9 2023 5:14 PM UTC

}// 138/140

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KilledByAPixel

remix of d/21974 by u/KilledByAPixel

function u(t) {

t?x.fillStyle='#0031':X=Y=Z=0
for(x.fillRect(0,0,i=2e3,i);i--;X*=s=.999,Y*=s)x.clearRect(960+(X+=C(Z+=S(t*9^i))),540+(Y+=(S(Z))),1,1)

Mar 16 2021 5:53 AM UTC

}// 133/140

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Electron

u/magna

Wild!

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maxpowa

remix of d/3377 by u/maxpowa

function u(t) {

x.font='100px s';
r=m=>Math.random()*Number.MAX_VALUE%m;
o=(e,i,j)=>x.fillText(e,i,j)
o('🖕',r(1919),r(1080));

Oct 27 2017 4:15 PM UTC

}// 109/140

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u/New_Core

x.font='3cm s',r=>Math.random(),x.fillText('🖕',r(1919),r(1080))
u/magna

60: r=Math.random,x.font='3cm '+x.fillText('🖕',r()*2e3,r()*1e3)

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rodrigo.siqueira

remix of d/33811 by u/gabornyeki

function u(t) {

for(x.fillRect(x.globalAlpha=.3,p=q=0,i=1e5,i);i--;x.clearRect(960+p,540+q,1,1))r=p+C(a=p*i+t)*3,s=q+S(a)*3,r*r+s*s<2e5&&(p=r,q=s)

May 18 2025 4:16 PM UTC

}// 130/140

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kipkat

function u(t) {

w=c.width=400
for(i=8;i--;X=w/2+(Z=1/(2+C(p=1.666*i*5+(i<4)+t)))+t/10*S(p)*w/2,Y=Z*w/2-w/20,i==3?x.moveTo(X,Y):x.lineTo(X,Y),x.stroke());

Dec 20 2017 6:47 PM UTC

}// 137/140

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function u(t) {

t||c.replaceWith(g=c.cloneNode());
with(g.getContext('webgl'))(clearColor(C(t),0,S(t),1),clear(16384))

Jul 24 2020 3:02 AM UTC

}// 102/140

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testing remix of d/1948

u/IV

correction: remix of d/19498. The problem with this is in replacing the canvas. Any attempt at a remix will fail to get the context. But it is shortest :D
u/nikoloffgeorgi

u/IV that's really cool. i wonder if anything beyond animating the color uniformly can be done within 140 chars
u/IV

nothing you cant do better with the canvas. try this: with(c.getContext('webgl'))(enable(0x0C11),scissor(i,i,i,i),clearColor(C(t),S(t),t,1),clear(16384))
u/IV

what we need is a glitter, with a quad shader set up and then we can play with 140 chars of a fragment main
u/IV

u/nikoloffgeorgi game-on! i did this: d/19541

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iznax

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𝠰𜀬𡀽𫡥𭰠𡁡𭁥𞱸𛡦𪑬𫁒𩑣𭀨𜐸𜀫𤰨𨐽𡀮𩱥𭁓𩑣𫱮𩁳𚁸𛡦𪑬𫁔𩑸𭀨𤱴𬡩𫡧𛡦𬡯𫑃𫱤𩑐𫱩𫡴𚀱𜠸𜰳𝠫𚁄𛡧𩑴𢁯𭑲𬰨𫐽𡀮𩱥𭁍𪑮𭑴𩑳𚁸𛡦𫱮𭀽𙰶𨱭𘠧𚐩𛐱𚐥𜐲𚐫𚁭🠹🱭𞠢𜀢𚱭𚐬𜰰𛀲𝐰𚐩𚠮𜐰𝐩𚠹𜠬𜐶𝐭𠰨𨐩𚠹𜠬𜐲𛀱𜠩`.replace(/u../g,'')))

Mar 1 2020 3:22 AM UTC

}// 140/140

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Functional Clock

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Xen

remix of d/3094 by u/Xen

function u(t) {

for(c.width|=a=139;--a;)x.arc(900+a*C(t*t/a),500+a*S(t*a/9),a*6,-t%4,t%3);
x.fill('evenodd')

Aug 23 2017 1:28 PM UTC

}// 92/140

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u/cantelope

*.*
u/magna

WAT
u/donbright

!!!
u/Xen

you are feeling sleepy....good now send xen a beer :D