Top #sierpinski dweets

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/13601 by u/pavel

function u(t) {

c.width|=0
for(i=1e4,X=Y=Z=w=960;i--;x.fillRect(w+w*X/Z,w*Y/Z,s=40/Z/Z,s))a=i**4.8%6,X=X/2+S(a+t/3),Y=(a*S(t)/9)*X+Y/2+1,Z=1.6+Z/2+C(a+t/3)

May 3 2019 2:50 PM UTC

}// 139/140

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Sierpinski particles #sierpinski

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Xen

function u(t) {

x.fillText(x.drawImage(c,480*(t*9%3|0),540*((t*9%3|0)%2),960,540),9,9)

Aug 10 2017 11:13 PM UTC

}// 70/140

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-70Byte-Refix-

u/Xen

another 4 bytes can be shaved but it will take longer to draw ;-)
u/kchplr

62 bytes, same speed : x.fillText(x.drawImage(c,(V=t*9%3|0)*480,V%2*540,960,540),9,9)
u/kchplr

62 bytes and faster, but less interesting fade in: x.fillText(x.drawImage(c,(V=frame%3)*480,V%2*540,960,540),9,9)
u/iverjo

#sierpinski

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384.cz

function u(t) {

a="å"
eval(unescape(escape`𩑶𨑬𚁬𫱣𨑬𤱴𫱲𨑧𩑛𨑝𚐊𭀿𫱮𨱬𪑣𪰽𧰽🡴𪁩𬱛𨑝𚀩𞡩🐰𒡆👟🐾𪐾🠲𙡩𚰫🠾𞐊𢐽𫡥𭰠𢑭𨑧𩑄𨑴𨐨𩠽𨰮𭱩𩁴𪀽𜠵𝠬𩠩𒡦𫱲𚁬🐲𩐵𞱬𛐭𞰩𢐮𩁡𭁡𦱬𧐽𫀥𝀽🐳🱦𞠨𤰨𩠪𭀫𫀦𫀯𩡼𭀩𛐮𞐹𚐪𩠪𩠻𒡸𛡰𭑴𢑭𨑧𩑄𨑴𨐨𢐬𜀬𜀩`.replace(/u../g,'')))

Jan 14 2024 2:05 PM UTC

}// 139/140

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𝗚̵̟̗̣̗̟̄̕͝𝗹̢̣̮̗̠̊͒̈́̈𝗶̠͙ͫ̓̅ͮ̿͠͠𝗧̪̖̗̰͇̂̊̊̂𝗰͉̙̙̞̦̪̍͋̂𝗵̩̩͖ͭ̃͐͛͘͡𝗲̱̱̻̼̇̂̾̉̕𝗱̧̛̱̯̭̇̂̇ͫ 3.0

u/384.cz

Requires #DAP d/14319
u/384.cz

Click to start the audio
u/joeytwiddle

#glitch #sierpinski #audio
u/SockTaters

Phenomenal! Reminds me of one of my all time favorites youtu.be/sWblpsLZ-O8

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donbright

function u(t) {

質=(n)=>{for(j=2;j<n;j++){if (n%j==0)return n}return 0}
格=7
for(X=299;X--;)
for(Y=299;Y--;)
if (質(X&Y)) x.fillRect(格*X,格*Y,格,格)

Sep 19 2021 5:40 PM UTC

}// 128/140

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Prime fun 1 / 3 - This is the standard X&Y (binary AND) Sierpinski triangle picture but only where X & Y is a prime number. perhaps revealing a relationship between primes and binary AND #math #primes

u/donbright

(note white = X&Y is prime, black = X&Y is composite)
u/andrea270872

this is really nice. retro and mathsy at the same time!
u/donbright

#Sierpinski

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rodrigo.siqueira

remix of d/23528 by u/rodrigo.siqueira

function u(t) {

for(c.width=w=482,d=new ImageData(w,w),m=w*w,i=3;m--;d.data[i+=4]=Y*w&7e8)X=m-t*9e4,Y=m%w&X/w-S(m%w/99+t*3)*w/8
x.putImageData(d,0,0)

Aug 12 2021 1:52 PM UTC

}// 133/140

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#Sierpinski waves

u/danny@hille.dk

Love it: - idk why, but it reminds me of the old windows logo https://logodix.com/logo/661924.png

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geb

remix of d/20620 by u/dnmc

function u(t) {

b=199
c.width=b*9
p=0|window.p
p=++p%b
for(q=0;q<b;q++)
for(w=0;w<b;w++)
if(q%p&w%p){
x.fillStyle=R((w+q),t,p)
x.fillRect(9*q,9*w,9,9)}

Nov 16 2020 9:16 AM UTC

}// 135/140

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#Sierpinski

u/Xen

nice
u/katkip

smooth

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pavel

function u(t) {

c.width|=f=(X,Y,r=Y,i=r>9&&3)=>{for(x.fillRect(X,Y,s=r<10&&12,s);i--;)f(X+r/2*C(a=23*i+t*C(i)),Y+r/2*S(a),r/2)}
f(960,540)

Mar 27 2020 6:17 AM UTC

}// 122/140

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Why can't you just be normal #sierpinski ?

Show more comments…
u/pavel

I have no idea why this works. I was messing around with something else and then a sierpinski triangle popped out and started spinning around...
u/xem

love the explanation ^ :D
u/katkip

nice
u/pavel

I think I figured it out. If you set s=12 the structure becomes more apparent. +t*C(i) doing SO MUCH WORK is an amazing accidental find.
u/pavel

This certainly looks like a 2d projection of something 3d, how to get the depth information?
u/pavel

The trick is to rng three 2d vertices and smoothly vary them. Every combination uniquely maps to a valid 2d projection of a 3d plane so our brains infer the 3d shape.
u/pavel

for(c.width|=i=3;i--;x.lineTo(960+500*S(i*t),540+500*S(i+t)));x.fill()

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Xen

remix of d/5896 by u/Moosething

function u(t) {

t?x.globalCompositeOperation='xor':z=1
x.fillRect(0,!x.drawImage(c,z*=-1,1),1,z)

Oct 22 2019 6:44 PM UTC

}// 80/140

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80byte remix

u/Xen

#gameoflife #sierpinski

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katkip

remix of d/13405 by u/katkip

function u(t) {

x.translate(960,440);x.font='4cm"';x.fillText("KATKIP",400,600)
x.rotate(Math.PI*2/3)
x.drawImage(c,-t,+t,990,520)

Apr 23 2019 2:18 PM UTC

}// 114/140

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#sierpinski made of "katkip" #fractal

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rodrigo.siqueira

remix of d/33198 by u/rodrigo.siqueira

function u(t) {

for(i=3e4;i--;x.fillRect(14*X+750,540-135*Y,S(35/f)*(f&36)**-S(1/f-.3)/8,t<5))X=i*i/t%145-56,Y=4*S(i+t),f=0|(X*3|20*Y-X*2)*.9

Feb 2 2025 7:43 PM UTC

}// 125/140

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#Sierpinski composition

dwitter.net | #sierpinski