Top #fractal 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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KilledByAPixel

function u(t) {

c.style.filter='sepia()invert('
r=Math.random
A=X=r()*4-2
B=Y=r()*2-1
for(q=i=540;i--;x.fillRect(X*q+1200,Y*q+q,1,1))X=X*X-Y*Y+(Y=2*Y*X+B,A)

Apr 9 2020 4:39 AM UTC

}// 140/140

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Mandelbrot Galaxy #Fractal #SlowDraw

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u/KilledByAPixel

GIF: https://twitter.com/KilledByAPixel/status/12…
u/KilledByAPixel

#Mandelbrot #WaitForIt
u/joeytwiddle

Very pretty! Mandelbrot in space
u/iverjo

Impressive
u/tomxor

Incredible!
u/aleamb

beautiful!!
u/Xen

sexy!
u/DataMeta

coool!
u/KilledByAPixel

thank you 😊
u/KilledByAPixel

#buddhabrot
u/Qwitter

Nice to see

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iverjo

remix of d/123 by u/icecuber

function u(t) {

i=frame;for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(k,j,i);x.fillRect(i,j,1,S(k/9))}

Feb 22 2017 6:10 PM UTC

}// 140/140

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Color version, a minified version of myJS's suggestion

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u/bakkot

golf'd slightly harder on general principles: i=frame;for(j=1080;j--;x.fillRect(i,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/donbright

niiiice
u/Krachwumm

This is freaking amazing. Even if it would have taken you 1000 characters
u/iverjo

Thanks bakkot! I golfed your version even further down to 134 characters: for(j=1080;j--;x.fillRect(i=frame,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/iverjo

Feel free to play with the colors! There's room for improvement
u/hamptonio

That's a work of art man
u/SpecialAgent

I must commend you! Did my research and got a working mandelbrot, but to golf it to 140 and get the speed is very very difficult! Wow. I will study your dweet now :)
u/iverjo

#fractal
u/iverjo

#mandelbrot
u/iverjo

#slow_render
u/f8f82804

#scanline

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tomxor

remix of d/21621 by u/tomxor

function u(t) {

for(c.width&=m=i=8320;i--;x.fillRect(X=i&127,Y=i>>7,1,f(X/m+.01,Y/m)))f=(x,y,n=42)=>--n&&y/C(x+n/2+t)<2?f(x*x-y*y-1.5,2*x*y,n):n/16

Feb 8 2021 3:43 AM UTC

}// 131/140

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Something #creepy #fractal :/

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u/tomxor

I find this really unsettling for some reason !
u/katkip

amazing
u/DataMeta

whoa
u/Qwitter

its too good
u/iverjo

This somehow reminds me of the flesh-eating plant (The Angostura) in Moomin
u/sigveseb

So many tentacles!

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rodrigo.siqueira

remix of d/20477 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,r,a,s,d=1)=>r>.5&&x.lineTo(X,Y)|f(X+C(a+=s/3)*r,Y+S(a)*r,r-r/22,a,s,-d)|f(X,Y,r/2.9,a+s*d,s*d)
t||f(1280,214,118,1.3,.6)|x.stroke()

Nov 4 2020 4:13 PM UTC

}// 138/140

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Organic spirals #plant #fractal

u/ciaccodavide

Beautiful!
u/Xen

Sexy!!!
u/danny@hille.dk

wow!
u/rodrigo.siqueira

My Instagram with this image (framed and zoom): https://www.instagram.com/p/CHLmJNKlevK/
u/tomxor

#art

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rodrigo.siqueira

remix of d/18558 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=0)=>Y<9?f(X*X-Y*Y-.8,2*X*Y+.2,n+.16):x.fillStyle=`hsl(${i/9},75%,${n*n}%`;i--;x.fillRect(i,t*60,1,999))f(i/480-2,1-t/9)

May 14 2020 4:15 PM UTC

}// 138/140

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Laser color printing #julia set #fractal

u/sigveseb

Very pretty colors!
u/rodrigo.siqueira

This code stems from original u/Pavel's https://www.dwitter.net/d/18323
u/joeytwiddle

Multibeam: x.fillRect(i,t*60,1,999),Math.random()<.94&&(x.fillStyle='#000',x.fillRect(i,t*60+1,1,999))

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tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.6,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=C(2*Z+S((X&Y)/(1+Z*Z))/8)

Mar 2 2019 7:46 PM UTC

}// 140/140

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Fractal Lake

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tomxor

function u(t) {

eval(unescape(escape`眽㤰Ⱪ㵬㵷⩷⼵ⱴ㴱⭴⩴⼱㈻景爨砮晩汬剥捴⠰ⰰⱣ⹷楤瑨㵷⨲ⱷ⨲⤻椭ⴻ砮晩汬剥捴⡘⨶ⱙ⨶ⰱ⭋ⰵ⤩堽椥眯㌬夽椯眬䘽琭椯氬䬽ㄭ䘥ㄬ䬪㴨奞堭繆⤯㈷┱⭋⨪㠬砮晩汬却祬攽恨獬⠤筩⨱㈰紬㤹┬⑻䬪㤹紥⥠`.replace(/u(..)/g,"$1%")))

Feb 14 2019 12:46 AM UTC

}// 140/140

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Trinitron #crt #scanline #fractal

u/tomxor

Finally resorted to UTF8. This is a reasonably accurate slow motion aperture grille scanline animation... Although if run very slow you will see it's not simulating 3 electron beams. t=fps (scanline) w=width (subpixels) the later must be a multiple of 3 and 5. Use X, Y and floored F to plugin your own fractal!
u/tomxor

Uncompressed: w=90,i=l=w*w/5,t=1+t*t/12; for(x.fillRect(0,0,c.width=w*2,w*2);i--;x.fillRect(X*6,Y*6,1+K,5)) X=i%w/3,Y=i/w|0,F=t-i/l,K=1-F%1,K*=(Y^X-~F)/27%1+K**8, x.fillStyle=hsl(${i*120},99%,${K*99}%)
u/sigveseb

Kick-ass!
u/C010011012

bypassing the character limit I see using unicode escapements and regex u r very clever

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pavel

function u(t) {

f=(X,y,r=80,a=0)=>r>6&&[0,.4,-.4,0].map(o=>o?f(X+r*S(a)*C(X*y/4e4+t),y-r*C(a),r*.8,a+o):x.lineTo(X,y));c.width=640;f(320,360);x.stroke()

Apr 24 2020 8:23 AM UTC

}// 136/140

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Rotating #tree #fractal

u/pavel

Inspired by https://twitter.com/ntsutae/status/125356447…
u/neimad

You should do a twitch channel. amazing.
u/ntsutae

I’m honored.
u/pavel

u/ntsutae :O I love your stuff on twitter! 素晴らしですよ
u/vain

Great 3D version !!

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p01

function u(t) {

for(c.width=n=128;n-=r=i=1/64;x.fillRect(n%2*64,n/2,k/32,1))for(Y=1-n*i,X=n%2-1,k=32;--k/r;i=j)j=2*r*i+X*S(t)-Y*C(t),r=r*r-i*i+Y*S(t)+X*C(t)

Jan 3 2018 9:41 PM UTC

}// 140/140

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Spinning Mandelbrot set

u/magna

We're going to need a bigger CPU.
u/iverjo

Nice effect! 22 FPS on my machine, in Firefox. Surprisingly, it runs much slower in Chrome and Edge (4 FPS)
u/sigveseb

Screeching by at 4FPS on my machine too :D nice mandelbrot though
u/donbright

feel like standing up and applauding. unbelievable.
u/rodrigo.siqueira

#mandelbrot #fractal

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icecuber

function u(t) {

t?i++:i=0;for(j=1080;j--;){a=b=0;k=35;for(;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillRect(i,j,1,S(k/9))}

Apr 13 2016 1:46 PM UTC

}// 122/140

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u/iverjo

115 bytes: for(j=1080;j--;a=b=0){for(k=35;k--&&a*a+b*b<4;a=y)y=a*a-b*b+t*60/540-2,b=2*a*b+j/540-1;x.fillRect(t*60,j,1,S(k/9))}
u/iverjo

Here's one that draws faster: for(i=4;i--;){for(j=1080;j--;a=b=0){for(k=35;k--&&a*a+b*b<4;a=y,l=t*240+i)y=a*a-b*b+l/540-2,b=2*a*b+j/540-1;x.fillRect(l,j,1,S(k/9))}}
u/iverjo

Nvm, they depend on various variables being defined. I was fooled.
u/myJS

How about colors? t?i++:i=0;for(j=1080;j--;){a=b=0;k=35;for(;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(k,j,i);x.fillRect(i,j,1,S(k/9))}
u/sfz

Nice enhancement myJS!
u/lionleaf

#scanline #slow_render #fractal #fractals

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