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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joeytwiddle

function u(t) {

c.width|=p=(X,Y,W,I,H=W/2)=>H>2?(p(X,Y,H,I*=Math.random()**.2),p(X+H,Y,H,I),p(X,Y+H,H,I),p(X+H,Y+H,H,I)):x.fillRect(X,Y,I,I),p(0,0,R=1024,9)

Jan 9 2019 3:15 PM UTC

}// 140/140

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a sort of rough #recursive #plasma #fractal

u/joeytwiddle

Ideally we would keep the edges smooth, by holding an intensity for each corner instead of the entire square
u/joeytwiddle

W=width, H=half width, I=intensity, p=plot/plasma/partition
u/joeytwiddle

p calls p four times for each sub-square, with a randomly smaller I

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rbong

function u(t) {

for(Y=3;Y-=1/64;)
  for(X=3;X-=1/64;){for(r=i=0,c=10;r*r+i*i<=4&&c--;)_=r*r-i*i+X-2,i=r*i*2+Y-1,r=_;c&&x.fillRect(X*500,Y*500,8,8)}

Oct 13 2018 3:25 PM UTC

}// 132/140

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Very Slow Mandelbrot

u/rbong

#mandelbrot #fractal
u/rbong

I didn't see many other mandelbrots so I thought I'd do it. Sorry for the CPU hog!

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katkip

remix of d/894 by u/iverjo

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(0,k);x.fillRect(i*2,j,C(k)*2,5)}

Sep 27 2018 2:24 PM UTC

}// 140/140

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Mandeldistort #mandelbrot #slow_render #scanline #fractal

u/katkip

#waitforit it actually gets better than I expected
u/joeytwiddle

Nice fresh style

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Tesseract

remix of d/8200 by u/Tesseract

function u(t) {

for(i=999;i--;)r=Math.random()*8&7,
x.fillRect(T=243*(r*.4|0)+T/3|0,C=243/2*(r%3*5&6)+C/3|0,1,1)

May 22 2018 9:10 PM UTC

}// 96/140

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u/joeytwiddle

Nice technique to skip the middle :)
u/zanella

Fractals are awesome!
u/S.T.L.K.R.

DAMN IT MAN :O
u/fujimotos

#slow_render #fractal

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Talesseed

remix of d/6011 by u/Talesseed

function u(t) {

a=0|60*t%60
for(n=z=w=0;n++<256&z*z+w*w<4;[z,w]=[z*z-w*w+a/20-2,2*z*w+~~t/20-1])x.fillStyle=R(g=256,g-3*n,g),x.fillRect(a*25,~~t*25,25,25)

Jan 14 2018 2:34 PM UTC

}// 138/140

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2 characters shorter

u/iverjo

#mandelbrot #fractal

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rodrigo.siqueira

remix of d/35036 by u/rodrigo.siqueira

function u(t) {

for(c.width|=X=2e3;X--;x.fillRect(X,Y*1500-1e3+950/(t**9+.5),1,2e3))for(Y=-.5,k=9;k--;Y+=f(3**k*X/2e3)/2**k)f=n=>(n+~n+.5+S(t*2+X/99)/70)**2

Mar 11 2026 8:17 PM UTC

}// 140/140

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Moving fractal mountain #fractal #mountain

u/rodrigo.siqueira

Blancmange curve (Takagi curve)

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rodrigo.siqueira

remix of d/28706 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(a=b=t,i=7e4;i--;b=b/1.7-C(a*3),a+=(i/b&1)*3.2-b*S(a*4)/6-a*a/4.4)x.fillRect(4720-a*7e3+b**8*i,490-b*1e3,.1,t<2)

Oct 18 2023 5:34 PM UTC

}// 140/140

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My fractal garden #plant #fractal

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rodrigo.siqueira

remix of d/28260 by u/rodrigo.siqueira

function u(t) {

for(X=2e3;X--;x.fillRect(X,Y*940,1,999))for(Y=1,k=9;k--;Y-=f(3**k*X/1918)/2**k)f=n=>1-(t<4?t/2:2)*(n+~n+.5)**2

Aug 8 2023 12:35 PM UTC

}// 110/140

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Blancmange curve (Takagi curve) #fractal

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Tesseract

remix of d/8207 by u/Tesseract

function u(t) {

for(i=j=540;r=Math.random()*6|0,i--;)if((r+1)%6!=T&&r!=(R+1)%6)x.fillRect(c=C(a=1.047*r)*j+j+c>>1,Set=j*S(a)+j+Set>>1,1,1),R=T,T=r

Oct 17 2022 4:08 PM UTC

}// 130/140

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dimension is roughly 1.92064086682056

u/Tesseract

#fractal

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rodrigo.siqueira

remix of d/25214 by u/New_Core

function u(t) {

for(X=2e3;X--;x.fillRect(X,t*60,2-i/90,2/a)){a=X/450-2,b=t/6-1.5,i=0
do{d=a*a-b*b-.8,b=2*a*b+.16,a=d,i++}while(a*b<16)}

Mar 29 2022 10:54 PM UTC

}// 119/140

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Deep shadows from Gaston Julia set #fractal

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