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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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magna

remix of d/24019 by u/magna

function u(t) {

w=c.width|=0
h=1080
A=S(t/5)+2
Z=S(t/7)+3
x.setTransform(k=C(A)*Z,z=S(A)*Z,-z,k,w/2,h/2)
for(i=w;--i;)x.fillRect(i-w/2,-h/2,1,S(i+Z-A)**2*h)

Oct 7 2021 4:57 AM UTC

}// 140/140

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magna

remix of d/24018 by u/magna

function u(t) {

w=c.width|=0
for(i=w;--i;)x.fillRect(i,0,1,S(i+t/2)**2*1080)

Oct 7 2021 4:28 AM UTC

}// 60/140

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Playing with lines

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magna

remix of d/24015 by u/magna

function u(t) {

w=c.width|=0
t||(a=Array(w).fill(i=0).map((_,i)=>S(i)**2))
for(j=w;--j;a[i]>a[j]&&(R=a[i],a[i]=a[j],a[j]=R))x.fillRect(j,0,1,a[j]*1080)
i++

Oct 7 2021 2:44 AM UTC

}// 139/140

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Satisfying sin^2 sort remix

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magna

function u(t) {

w=c.width|=0
t||(a=Array(w).fill(i=0).map(Math.random))
for(j=w;--j;a[i]>a[j]&&(R=a[i],a[i]=a[j],a[j]=R))x.fillRect(j,0,1,a[j]*1080)
i++

Oct 6 2021 11:57 PM UTC

}// 136/140

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Unbelievable Sort https://twitter.com/petarv_93/status/1445743…

u/ciaccodavide

#sort
u/magna

My implementation allegedly has a flaw that doesn't match the cursed behaviour of the original algo, but I wasn't able to immediately see it.

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theonewhostands

remix of d/24013 by u/theonewhostands

function u(t) {

for(i=c.width|=0;i--;)x.arc(960-S(i/40-t*1),540+C(i/40-t*1)*40,i,6+S(t*1)*9,9-S(i/49-t*3)*9)
x.stroke()

Oct 6 2021 9:28 PM UTC

}// 103/140

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theonewhostands

remix of d/24012 by u/theonewhostands

function u(t) {

for(i=c.width|=0;i--;)x.arc(960-S(i/40-t*1),540+C(i/40-t*1)*400,i,0,9-S(i/49-t*20)*200)
x.stroke()

Oct 6 2021 9:25 PM UTC

}// 98/140

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theonewhostands

remix of d/23998 by u/KilledByAPixel

function u(t) {

for(i=c.width|=0;i--;)x.arc(960-S(i/40-t*10),540+C(i/40-t*5)*10,i,0,9)
x.stroke()

Oct 6 2021 9:22 PM UTC

}// 81/140

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KilledByAPixel

remix of d/24009 by u/BackendForth

function u(t) {

for(c.width|=i=0;i<3e3;i+=.1)x.arc(960,540,i**.5*21,a=i+t,a)
x.stroke()

Oct 6 2021 8:54 PM UTC

}// 71/140

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Spiral Makes Circle Moiré

u/magna

Awesome! Also, ouch my eyes.
u/Chippackage

WOW!

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danny@hille.dk

remix of d/23879 by u/danny@hille.dk

function u(t) {

//bounce












eval(unescape(escape`󮬽󨼮󭽩󩍴󪌽󭼽󜬱󞌻󩭯󬬨󫜽󜽥󝌻󫜭󛜻󚝸󛭦󪝬󫍒󩝣󭌨󪜽󫜥󭼬󪬽󫜯󭽼󜌬󮬪󚬮󜜬󜬩󛍲󟜨󦌽󪜯󭼪󝌭󜬩󚭘󚼨󦜽󪬯󭼪󝌭󜜮󜜩󚭙󛍤󟝲󟬱󟽓󚍴󚬴󙜳󛬲󚜯󞌭󛬲󝌺󠼨󬬩󛼷󛍺󟝓󚍘󛽤󛝴󚬱󞜩󚭃󚍙󛽤󚽴󚬹󚜻`.replace(/u../g,'')))

Oct 6 2021 8:38 PM UTC

}// 140/140

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bouncy bouncy remix

u/magna

Wow! Also, the flex of taking up 22 characters with that preamble :D
u/danny@hille.dk

u/magna thanks :-)
u/danny@hille.dk

glsl version -> https://glslsandbox.com/e#75728.1
u/danny@hille.dk

#d3 #ball

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BackendForth

function u(t) {

c.width|=0
v=(p,q)=>x.lineTo(p*C(q-t)+960,p*S(q-t)+540)
x.beginPath()
for(i=-596;i<599;i+=.1)v((i<0)?-t*(-i)**.5:i**.5*t,(i*i)**.5)
x.fill()

Oct 6 2021 6:32 PM UTC

}// 140/140

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Fermat spiral

u/andrea270872

I love what that is doing to my eyes! :D