Top #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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tomxor

function u(t) {

eval(unescape(escape`𭁼𯀨𫱮𨱬𪑣𪰽𩐽🡻𩡯𬠨𦀫🐨𩐮𮀭𪀩𛱚𛁙𚰽𚁥𛡹𛑨𚐯𦠬𦠪🐲𛁣𛡷𪑤𭁨👷🐵𝠸𛁰🐲𩐵𞱰𞰩𦱡𛁢𧐽𛐭𭐦𙡢𚡢🀴🱛𦀫𚁰𙑷𛑨𚐯𦠫𨐪𨐭𨠪𨠬𦐫𚁰𛱷𛑨𚐯𦠫𜠪𨐪𨡝𞡛𜀬𜀬𮀮𩡩𫁬𤡥𨱴𚀭𛑰𙑷𛁰𛱷𛀱𛁵𛱨𛁵👨𚑝𯐩𚁻𮀺𦠽𞀰𛁹𞡨🐱𝠰𯐬𦀽𦐽𜀩`.replace(/u../g,'')))

Apr 28 2023 11:57 PM UTC

}// 140/140

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#app #mandelbrot explorer (Click to Zoom)

Show more comments…
u/tomxor

Doesn't go as deep as it could, needs the zoom count added to initialisation of u.
u/Xen

love it!!
u/Joachim

This is incredible!! Well done on getting it to 140!
u/GreyHope

So cool! Very impressive golfing.
u/joeytwiddle

#interactive #fractal
u/jdspugh

Awesome
u/deobfuscate

This is definitely one of the dweets of all time.

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pavel

function u(t) {

for(let i=1920,f=(x,n=420,a=0,b=0)=>a*a+b*b<n?f(x,n-1,a*a-b*b+x,2*a*b+.1133-t/4615):n/420;i--;)x.fillRect(i,180*t,f(i/8e5-.7467),3)

Apr 18 2020 5:59 AM UTC

}// 131/140

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(X=-0.7453, Y=0.1127, R=6.5e-4) section of the #mandelbrot set

u/pavel

This version draws 1x3 pixels to speed up rendering. for(let i=2e3,f=(x,n=420,a=0,b=0)=>a*a+b*b<n?f(x,n-1,a*a-b*b+x,2*a*b+.1133-t/13845):n/420;i--;)x.fillRect(i,60*t,s=f(i/8e5-.7467),s) looks better in fullscreen but is 3x as slow.
u/pavel

let and the automatic scoping of args in f makes this _really_ quick. I can increase the loop to 4e3 iterations and still have 60fps on my machine. Would be interesting to speed this up by rendering multiple rows per frame.
u/katkip

all dweets made by u/pavel are genius
u/Xen

godlike!
u/Qwitter

agreed !!!!

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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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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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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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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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rodrigo.siqueira

remix of d/23279 by u/rodrigo.siqueira

function u(t) {

for(i=c.width=256;i--;)for(j=144;j--;x.fillRect(i,j,k*S(a+t),2/k))for(a=b=0,k=19;k--&&a<j;a=q)q=3*a*a-C(T(a+t)/j)*b*b+i/160-1,b=a*b*6+j/72-1

Apr 11 2022 8:27 PM UTC

}// 140/140

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Mandelnoise #mandelbrot #fractal

u/magna

AWESOME!
u/ciaccodavide

wow

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magna

function u(t) {

t||(w=c.width=192)
for(h=54,i=w;i--;x.fillRect(i,R,1,j/w))for(R=t*39|0,X=i/h-2.4,Y=R/h-1,a=b=0,j=w;a*a+b*b<5&&j--;)[a,b]=[a*a-b*b+X,2*a*b+Y]

Oct 22 2021 3:06 AM UTC

}// 140/140

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#mandelbrot #glitch

u/magna

My first attempt to draw a Mandelbrot fractal, straight from the reference implementation from Wikipedia. Still need to learn lots of size/speed hacks, apparently :)
u/KilledByAPixel

congrats!
u/Toby

nice!

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rodrigo.siqueira

remix of d/23275 by u/rodrigo.siqueira

function u(t) {

for(i=c.width=256;i--;)for(j=142;j--;x.fillRect(i,j,1,k/12))for(a=b=0,k=19;k--&&a<j;)q=3*a*a-(S(b+t*5)+1)*b*b+i/160-1,b=a*b*5+j/99-.7,a=q

Jul 2 2021 7:11 PM UTC

}// 137/140

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Animated #mandelbrot rays

u/magna

wowza
u/erin

top tier

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rodrigo.siqueira

remix of d/14525 by u/rodrigo.siqueira

function u(t) {

for(var I=960;I--;)for(var U=P=X=I/190-3,Q=Y=t/3-1.85,k=14;k--;)U=X,X=X*X-Y*Y+P,Y=2*U*Y+Q,X*X>2?x.fillRect(I*2,t*99,2,2):x.fillStyle=R(k**2)

Jun 14 2019 2:56 PM UTC

}// 140/140

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Red rays from the Mandelbrot Set #mandelbrot #fractal

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u/KilledByAPixel

Amazing.
u/artfarnaa

Is there a way to make these fractal examples render faster? Perhaps offload the calculations to web assembly?
u/username

"Red rays" also known as low iteration count
u/13thptr

u/artfarnaa wasm isn't much faster than js on most platforms and it takes a lot of space to set up
u/13thptr

see u/rbong's work on it
u/katkip

i don't understand this so awesome
u/rodrigo.siqueira

Artfarnaa, it is possible to make super fast, see this pure JS fast implementation: https://csl.name/mandelbrot/ There are many tricks specifically created to calculate Mandelbrot Set (e.g. avoid calculations in a rectangle inside the main set because all pixels are white and calculations in this white area is slower than other parts), but no speed optimization were used here because of space constraints. Some tricks to make it faster: do not use time variable to do calculations (because it is max 60 fps), do not plot each pixel, but store them in an array and plot at once using c.putImageData(img)...
u/KilledByAPixel

There is one way to make it very very fast. I just made a quick shader of it for you! https://www.shadertoy.com/view/wtjGz3
u/artfarnaa

Thanks guys, great inspiration.

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rodrigo.siqueira

remix of d/21434 by u/rodrigo.siqueira

function u(t) {

for(i=1080;i--;x.fillRect(a=t*120,i,2,.2-f(a/1000-1.3,i/990)))f=(X,Y,n=90)=>T(t*X)*S(Y)*2<2?f(X*X-Y*Y,2*X*Y+.7,n-=2):n/70

Jan 25 2021 2:54 PM UTC

}// 121/140

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Thorn forest #mandelbrot #fractal

u/Xen

Love it!
u/aaaaaz

#forest

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