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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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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tomxor

function u(t) {

c.width=w=120
for(i=w*33;i--;x.fillRect(i%w,i/w*2,1,2))f=i%w+t*60,n=T(0|(i/w+f^f-i/w)/(t**.7+6)),x.fillStyle=R((n&1)*i/n/8,n**n,(n&3)*i/n/4)

Nov 3 2018 5:53 PM UTC

}// 140/140

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#retro #fractal #game

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u/tomxor

For the lazy game designer... Just add chip tunes and a player :D
u/tomxor

#crt #degauss #sidescroller
u/magna

Awesome!
u/magna

I had a RGB CRT setup, but I hadn't been able to fit any interesting patterns: d/7512
u/tomxor

I had a look at yours magna, they are true crt, much more realistic i think. The scan lines on this are just a sideeffect I exploited and it was easy to add colour distortion in the R().
u/magna

Here we go: d/10843
u/C010011012

is it a cellular automata?
u/tomxor

Yes and no, it's a fractal n=T(0|(i/w+f^f-i/w)/(t**.7+6)) which is just a more elaborate variation of serpinsky triangles to produce more interesting patterns. Some fractals are automata, but not all automata are fractals, see here: https://en.wikipedia.org/wiki/Rule_90
u/tomxor

The implication is serpinsky triangles are computationally reducable, meaning it does not have to be computed in the same way as a cellular automata i.e state can be computed at step t directly without traversing intermidiate steps.

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New_Core

function u(t) {

e=-.8
m=.153
for(X=2e3;X--;){a=X/600-1.6,b=t*.1-1,i=0
do{d=a*a-b*b+e,b=2*a*b+m,a=d,i++}
while(i<255&&(a*a+b*b<4))
x.fillRect(X,t*60,1/i,i)
}

Mar 28 2022 4:08 PM UTC

}// 140/140

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in the "while".. set the number 4 to 1 to see the footprint of a julia... =)

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u/New_Core

the org julia code wasnt done by me, I just shorten and messed it up a bit ;)
u/andrea270872

Love the smudge effect!
u/magna

Looks like embroidery!
u/magna

#3d
u/Xen

wild!
u/danny@hille.dk

Cool!
u/vain

beyond incredible! I really love the way, how the image is drawn!
u/sigveseb

The smudge effect!
u/joeytwiddle

#julia #fractal with sort of #d3 #lighting
u/SophiaCristina

<3 <3 <3

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rodrigo.siqueira

remix of d/21453 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=99)=>T(X-S(Y))<9?f(X*X-Y*Y,2*X*Y+.7,n-1):x.fillStyle=`hsl(${i/8},80%,${C(n)*n}%`;i--;x.fillRect(i,t*60,1,1))f(i/3e3,t/50)

Jan 26 2021 4:11 PM UTC

}// 140/140

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Shaky lines #fractal

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u/danny@hille.dk

Love it!! reminds me of a Salvador Dali painting
u/aaaaaz

crazy !
u/DataMeta

woww this is beautiful!
u/DataMeta

my new lock screen wallpaper :) #abstract #art
u/rodrigo.siqueira

I created an animated version here: https://www.shadertoy.com/view/wtGcWc it's super fast and hypnotic. View in full screen!
u/danny@hille.dk

I just saw your "Super Julia Fractal" on shadertoy it is very cool!

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rodrigo.siqueira

remix of d/18551 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=62)=>X**3/Y<n?f(X*X-Y*Y-.8,2*X*Y+.2,n-1):x.fillStyle=`hsl(${n*6},99%,${X+n}%`;i--;x.fillRect(i,t*60,1,9))f(i/490-2,1-t/9)

Oct 9 2020 11:43 PM UTC

}// 140/140

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Pickover Stalks Orbit Traps #julia #fractal for X**3/Y<n #pickover

u/Xen

Wallpaper Worthy!
u/DataMeta

stunning!

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jylikangas

function u(t) {

c.width|=P=(i,j,a,d)=>d&&x.stroke(new Path2D('M'+[i,j,i+=S(a)*99,j+=C(a)*99]))&P(i,j,a+C(d/2+t)/3,d-1)&P(i,j,a-C(t/2)/3,d-1);P(960,999,66,9)

Jul 1 2018 10:50 AM UTC

}// 140/140

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Fractal in the wind

u/micahcowan

Beautiful!
u/aleamb

#fractal #path2d
u/fujimotos

Looks like silver grass.

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Renaud___

remix of d/1035 by u/Renaud___

function u(t) {

y=355/339;b=0;t?0:f=h=i=g=210;while(b++<50){d=1-++f/2e5;for(e=4,z=2;z<3e3;z*=4)f%z==z/2?e=1:0;i+=e;x.fillRect(g+=d*C(y*i),h-=d*S(y*i),2,2)}

Jan 16 2018 12:51 AM UTC

}// 139/140

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u/Xen

love it!
u/dogspace

very nice koch fractal
u/katkip

#koch #fractal
u/rodrigo.siqueira

#snowflake

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rbong

function u(t) {

for(X=960;X--;x.fillStyle=`hsl(${(t+k)*25},99%,50%)`,x.fillRect(X*2,t%9*120,2,2))for(r=i=0,k=45;--k/r;i=j)j=2*r*i+1-t%9/54,r=r*r-i*i-X/4800

Oct 28 2018 8:38 PM UTC

}// 139/140

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Scanline Rainbow Mandelbrot Section

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u/rbong

I've spent quite a bit of time now trying to get a faster, more detailed mandelbrot set or other interesting fractal that hasn't been done in fewer characters. This has included exploring obscure fractals like those generated from polynomial roots, using image data as storage or other memoization, and the dweet earlier that used WebAssembly with a new compression technique. I'll keep exploring these ideas, but this experiment bore the quickest result. #fractal #mandelbrot #scanline #rainbow
u/rbong

Oh yeah, I also tried MAndelbrot perturbation. It's pretty expensive for these purposes but I might be able to do something similar.
u/Xen

Love it!
u/tomxor

I'd love to see more fractals, especially more esoteric ones, keep up the good work rbong.
u/katkip

Great job bro!! I love this one!
u/lionleaf

Amazing!
u/iverjo

#slow_render

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Jezza

remix of d/5896 by u/Moosething

function u(t) {

x.globalCompositeOperation='xor';
x.fillRect(frame%1920,1079,1,1)
x.drawImage(c,-1,-1)
x.drawImage(c,1,-1)

Jan 12 2018 11:17 AM UTC

}// 106/140

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Be sure to checkout fullscreen.

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u/zanella

You got my Awesome when I switched to fullscreen. Gorgeous, great job!
u/loni_art

feels like a carpet!
u/magna

Great!
u/sigveseb

yes this is good! neeeds fullscreen though!
u/breakster

I don't know this fractal. What is it called?
u/iverjo

Wow!
u/J2D28U

Its like a persian carpet or something...
u/Jezza

@breakster, I don’t know if it has a name - I was just messing about with Moosething’s dweet.
u/BirdsTweetCodersDweet

#fractal #carpet #generator #fullscreen

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tomxor

remix of d/18323 by u/pavel

function u(t) {

f=(x,y,n=w)=>x<n?f(x*x-y*y-.8,2*x*y+.2,n-1):S(n/9)
for(w=c.width=99,i=6e3;i--;)
x.fillRect(X=i%w,Y=i/w,1,f((X-49)/t**8,(Y-28)/t**8-.703956))

Apr 22 2020 7:38 PM UTC

}// 140/140

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#zoom #julia #fractal

u/tomxor

Including x<n and .2i from u/rodrigo.siqueira
u/xem

amazing! how many extra bytes to have it less pixellized?
u/tomxor

Only +2 for 1/4 HD: d/18436 but your CPU will cry :P in fact full HD fits but you have to start measuring the speed in seconds per frame.
u/iverjo

Impressive!

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