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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/19604 by u/rodrigo.siqueira

function u(t) {

for(i=1e4;i--;f(0,0,330/(1+i%2),t*i*i))f=(X,Y,s,r)=>s>1?f(Y+s*C(r),X+s*S(r),s/2,C(r+i)):x.fillRect(X*1.4+830,Y+370,1,.2*(t<4))

Aug 7 2020 8:42 PM UTC

}// 126/140

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Abstract sculpture

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taupelink

remix of d/19623 by u/taupelink

function u(t) {

g=(x,y)=>x*x-y*y+T(T(x*x+y*y)/S(x+2*y));for(i=z=800;i--;)X=2/(r=Math.random)(),Y=2/r(),x.fillRect((X-2)*z,(Y-2)*z,g(C(X*X),S(Y*Y))>S(X*Y),1)

Aug 7 2020 5:23 AM UTC

}// 140/140

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d/19625

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smtsjhr

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐰𞱸𛡦𪑬𫁓𭁹𫁥👠𪁳𫁡𚀤𮱨🐵𜀪𤰨𭐽𭀯𝐩𯐬𞐹𙐬𙁻𜠰𚱨𯐥𛀮𜠩𨀻𮀮𭁲𨑮𬱬𨑴𩐨𞐸𜀫𞐸𜀪𠰨𭐩𛀱𩐳𛐸𜀰𚡓𚁵𚐩𞱦𫱲𚁦🐳𜠻𩠭𛐻𮀮𬡯𭁡𭁥𚁦𚠮𜐹𝠩𚑦𫱲𚁩🐵𜀻𪐭𛐻𚑻𮀮𩡩𫁬𤡥𨱴𚀱𜀰𚠨𜠵𛑩𚱴𙐱𚐬𜠰𜀬𝐰𛐳𜀪𤰨𭐩𛀱𩐴𚑽`.replace(/u../g,'')))

Aug 7 2020 3:34 AM UTC

}// 140/140

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Sunny Day / Starry Night

u/smtsjhr

SOURCE (194/140): c.width|=0;x.fillStyle=hsla(${h=50*S(u=t/5)},99%,${20+h}%,.2);x.translate(980+980*C(u),1e3-800*S(u));for(f=32;f--;x.rotate(f*.196))for(i=50;i--;){x.fillRect(100*(25-i+t%1),200,50-30*S(u),1e4)}
u/katkip

beautiful
u/magna

WOOOOW!
u/aleamb

#dawn #sunny #sunset
u/aleamb

#sun

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taupelink

remix of d/19530 by u/taupelink

function u(t) {

g=(x,y)=>(x*y)%.7+C(x+S(y));for(i=1e3;i--;)X=(r=Math.random)()*9,Y=r()*20,x.fillRect(X*220,Y*54,(g(X,Y)*(X|Y))|0/6,g(T(X-30/Y),T(X*X-Y))>.3)

Aug 7 2020 2:20 AM UTC

}// 140/140

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d/19623

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smtsjhr

remix of d/19621 by u/smtsjhr

function u(t) {

c.width|=0
x.translate(980,540)
x.globalAlpha=.2
for(f=32;f--;x.rotate(f*.19634))for(i=50;i--;)
{x.fillRect(100*t*(25-i),1e2,25+10*t*t,1e4)}

Aug 7 2020 1:20 AM UTC

}// 140/140

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what i saw when i died

u/13thptr

makes sense

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smtsjhr

remix of d/19467 by u/smtsjhr

function u(t) {

c.width|=0
x.translate(980,540)
x.globalAlpha=.25
for(f=32;f--;x.rotate(f*.19634))for(i=50;i--;){x.fillRect(100*(25-i+t/5),0,30,1e3*S(t/5))}

Aug 7 2020 1:18 AM UTC

}// 140/140

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Odog8

function u(t) {

t?0:document.body.innerHTML="<textarea width=1000 height=1000>"+document.body.innerHTML;C=(x)=>console.log("NOCOS");browserGlobals=""

Aug 7 2020 12:57 AM UTC

}// 133/140

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injection maybe?

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vityavv

function u(t) {

x.clearRect(0,0,1920,1080)
x.lineWidth=10
for(a=50;a;a--){
x.beginPath()
x.arc(960,540,10*a,c=(b=Math.PI)+t/5*a,c+b/2)
x.stroke()}

Aug 6 2020 5:57 PM UTC

}// 130/140

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I could stare at this for hours

u/Irratix

Cool!
u/magna

Yes!

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Irratix

remix of d/19617 by u/vityavv

function u(t) {

c.width|=0
x.translate(960,590)
for(q=21;q--;){x.rotate(t/3)
x.fillStyle=R(0,255-12*q)
x.fillRect(a=20*q,a,b=100*q,b)}

Aug 6 2020 5:16 PM UTC

}// 118/140

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Was just trying to golf a bit more for fun, but ended up with an effect I thought looked really cool :D

u/nedxbaxter

I had a senior moment..

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vityavv

remix of d/19616 by u/vityavv

function u(t) {

c.width=1920
x.translate(960,590)
for(q=20;q;q--){x.rotate(t/3)
x.fillStyle=R(0,255-12*q,0)
x.fillRect(a=-50*q,a,b=100*q,b)}

Aug 6 2020 5:02 PM UTC

}// 124/140

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cut down a bit

u/magna

More cutting, and vertical centering: c.width|=0;x.translate(960,540);for(q=20;q--;x.fillRect(a=-50*q,a,b=99*q,b))x.fillStyle=R(x.rotate(t/3),255-12*q) (113/140)