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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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Current theme challenge: #Opposites

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marquisdegeek

function u(t) {

for(i=0;i<18;++i){z=(t*4-i*12)%192;x.fillStyle=R(S(t)*255,C(t*1.1)*255,T(t*1.4)*255,1);x.fillRect(950+z*5*C(z),540+z*3*S(z),15,10)}

Nov 25 2024 11:45 AM UTC

}// 134/140

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My very first!

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bibo

remix of d/32825 by u/Xen

function u(t) {

x.fillRect((z=540)*1.8,z,z*C(t*t)**5,z*S(t*t)**5)

Nov 25 2024 1:53 AM UTC

}// 49/140

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rodrigo.siqueira

remix of d/32824 by u/rodrigo.siqueira

function u(t) {

c.width|=m=n=s=0
for(j=3;j--;)for(i=1e4;i--;x.fillRect(n=1422-n/2+300*C(o+t+1),m,3,5))s=s/2-(i*S(i*j)|i)%8,m=(m+626+600*C(o=Math.PI/2*s))/2

Nov 24 2024 6:48 PM UTC

}// 139/140

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3d rotation

u/taupelink

Cool!! It's also one of those figures that could be rotating either clockwise or counterclockwise.
u/cantelope

amazing!
u/tomxor

Oh wow, I always wondered about 3D fractals.
u/jellyedwards

So cool!!
u/Joachim

Wow, that's amazing! Wonder if we could get some perspective in here 🤔

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Xen

remix of d/32818 by u/KilledByAPixel

function u(t) {

x.fillRect(z=399,z,z*C(t),z*S(t))

Nov 24 2024 11:55 AM UTC

}// 33/140

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quick test

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rodrigo.siqueira

remix of d/32819 by u/skeletonNatte

function u(t) {

m=n=s=0;for(i=1e4;i--;x.fillRect(n,m,.2,t<2))s=s/2-(i*S(i/t)|i)%8,m=(m+626+600*C(o=Math.PI/2*s))/2,n=1422-n/2.03+300*S(o)

Nov 23 2024 9:45 PM UTC

}// 121/140

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God of Fractals

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rodrigo.siqueira

remix of d/32803 by u/mrncstt

function u(t) {

x.fillRect(x.globalAlpha=.15,p=S(frame),2e3,2e3)
b=(1-p)**20
for(i=9;i--;b*=i/(p*2-1))x.clearRect(i*50+b+760+S(t)*90,500-b*2,20+b,b*4+99)

Nov 22 2024 10:20 PM UTC

}// 137/140

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Flash #default

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SockTaters

function u(t) {

with(x)
drawImage(c,-8,7,1936,h=1080),
fillRect(t**7%1920,t&&7,t?8:1920,t?9:h),
fillStyle='snow', // lol
fillText('🎄',817,290),
font='3in"'

Nov 22 2024 8:42 PM UTC

}// 139/140

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#Christmas #Tree with some alphabetized functions

u/SockTaters

Replacing t&&7 with t&&6 looks a bit like viewing a blizzard through blinds, but I decided against using it
u/SockTaters

Wow this looks terrible on my Macbook! Intended for Windows

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Coalshork

function u(t) {

b=8
x.strokeRect(960,520,t*100,t*100)
x.translate(960,520)
x.rotate((Math.PI*b)/180)
x.translate(-960, -520)

Nov 22 2024 8:10 PM UTC

}// 108/140

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Spirograph

u/Coalshork

For #interactive mode, change b to whatever value you want in degrees!

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skeletonNatte

remix of d/5861 by u/zanella

function u(t) {

m=h=960;n=v=540;s=0;for(i=4e3;i--;){s=(s*-6.2+1.23+3*Math.random()|0)%4;o=1.57*s;m=(m+h+v*C(o))/2;n=(n+v+v*S(o))/2;x.fillRect(m,n,1,1)}

Nov 22 2024 6:28 PM UTC

}// 135/140

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u/Coalshork

is this using the chaos game?
u/skeletonNatte

yes

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KilledByAPixel

remix of d/32813 by u/SockTaters

function u(t) {

x.fill(x.arc(a=500,a,a,0,a))

Nov 22 2024 4:57 PM UTC

}// 28/140

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Small Circle ⚫ #circlechallenge

Show more comments…
u/KilledByAPixel

One of the smallest and simplest solutions!
u/SockTaters

Cheating!! /j
u/384.cz

i is not cheating
u/384.cz

it is not cheating
u/lewdev

Is this what you used in Lu1ky Pinball?
u/KilledByAPixel

yes, everything in Lu1ky was done with the same style call to arc: https://frankforce.com/lu1ky-pinball-code-de…