New #Mandelbrot 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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rbong

remix of d/10574 by u/rbong

function u(t) {

for(n=200;n-=1/64;x.fillStyle=`hsl(${t*k*30},99%,50%)`,x.fillRect(n%3*666,n*5,16,16))for(r=i=0,k=28;--k/r;i=j)j=2*r*i+1-n/99,r=r*r-i*i-(n%3)

Oct 21 2018 3:46 PM UTC

}// 140/140

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Rainbow Cycling Mandelbrot

u/rbong

#rainbow #fractal #mandelbrot
u/rbong

This version has true color cycling, an animated Julia set, and is centered, but it's 18 characters over:
u/rbong

for(n=200;n-=1/64;x.fillStyle=\`hsl(${t*999+k*22},99%,50%)\`,x.fillRect(n%3*666,n*5,16,16))for(r=C(t*3),i=S(t*4),k=28;--k/r;i=j)j=2*r*i+1-n/99,r=r*r-i*i+1-(n%3)

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116

function u(t) {

a=A=t%3-2
b=B=(Math.E*t)%2-1
i=255
while(i--&&a*a+b*b<9){t=a*a-b*b+A;b=2*a*b+B;a=t}
x.fillStyle=R(i)
x.fillRect(1350+A*640,540+B*540,20,20)

Oct 14 2018 2:10 PM UTC

}// 139/140

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u/Jezza

#mandelbrot

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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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geb

function u(t) {

for(k=0;k<999;k++){a=h=t/8-2;b=i=k/480-9/8
for(n=0;a*a+b*b<4&&n<64;n++)q=a,a=a*a-b*b+h,b=2*q*b+i
x.fillStyle=R(2**n);x.fillRect(t*64,k,k,2)}

Jul 24 2018 11:58 AM UTC

}// 140/140

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Show more comments…
u/DataMeta

Niiiiice! #fractal
u/zanella

#mandelbrot
u/zanella

#mandelbrot
u/Xen

Very Nice Style
u/aleamb

#fractal
u/joeytwiddle

Nice #mandelbrot #fractal
u/katkip

Noyce.

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BalintCsala

function u(t) {

for(X=99;X--+200;)for(Y=99;Y--+99;)((f=(n,x,y)=>n&&x<2&&y<2&&f(n-1,x*x-y*y+U,2*x*y+V))(99,U=X/99,V=Y/99)===0&&x.fillRect(X+200,Y+99,1,1))

Mar 24 2018 10:13 PM UTC

}// 137/140

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Mandelbrot set

u/iverjo

#mandelbrot #fractal

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iverjo

remix of d/894 by u/iverjo

function u(t) {

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

Mar 10 2018 12:28 PM UTC

}// 134/140

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Golfed version of the color mandelbrot

u/DirtyDan

I'm a sucker for Mandelbrot dweets. Bravo!
u/iverjo

#mandelbrot
u/iverjo

#fractal
u/iverjo

#slow_render
u/Qwitter

escape time !

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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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whackashoe

function u(t) {

for(Y=48;--Y;)for(X=99;--X;){for(A=H=-2+X*.03,B=G=-1.2+Y*.05,n=0;++n<t;C=A*A,E=B*B,B=2*A*B+G,A=C-E+H);if(C+E>4)x.fillRect(X*19,Y*19,t,t)}

Jan 11 2018 12:05 AM UTC

}// 137/140

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u/Xen

clever approach.
u/Talesseed

Nice one,
u/Talesseed

Nice one!
u/joeytwiddle

#mandelbrot

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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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