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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andrea270872

function u(t) {

I=t*3320%2e3;J=t*94%1e3
i=A=I/2e3;B=J/1e3
for(;i++<13;[A,B]=[A*A-B*B+.3,2*A*B],C=A*A+B*B)
x.fillStyle=R(C*200,0,0,.3)
x.fillRect(I,J,i*=4,i)

Mar 7 2019 8:26 PM UTC

}// 140/140

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Ghost of Julia ver5 (in red)

u/f8f82804

#fractal
u/13thptr

weird rendering:I love it :)
u/andrea270872

thanks... I had to cut a lot of corners to even get something looking like that :D
u/13thptr

#scanline
u/Xen

love it!

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rodrigo.siqueira

remix of d/12356 by u/pavel

function u(t) {

c.width^=f=(X,Y,r,a)=>r>1.4&&x.lineTo(X,Y)|f(X+C(a-=.2)*r,Y+S(a)*r,r-r/(9-C(t)*7),a-.1)|f(X,Y,r/3,a+3)
f(680,9,185,2,2)|x.stroke()

Feb 17 2019 12:56 AM UTC

}// 130/140

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Plant growth #spiral #fractal

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katkip

remix of d/11581 by u/katkip

function u(t) {

eval(unescape(escape`挮睩摴桞㴰㭺㴨堬夬猩㴾筩昨猾㄰⥸⹦楬汒散琨堭猬夬猪㈬猯䌨琩⤬砮晩汬剥捴⡘ⱙ⵳ⱳ⼱〬猪㤩ⱺ⡘⵳ⱙⱳ⼲⤬稨堬夭猬猯㈩ⱺ⡘ⱙ⭳ⱳ⼲⤬稨堫猬夬猯㈩紻稨㤶〬㔴〬㈸〫䌨琪㈩⨲〩`.replace(/u(..)/g,"$1%")))

Dec 30 2018 9:35 AM UTC

}// 130/140

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Floating island of #fractal s #sierpinski

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katkip

function u(t) {

x.fillRect(960+C(t*99)*t*20,540+S(t*20)*t*20,t,t)

Dec 9 2018 2:04 PM UTC

}// 49/140

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Tlilxochitl's Flower #fractal. Is this the most golfed fractal on dwitter?

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magna

remix of d/7512 by u/magna

function u(t) {

c.width=960
for(j=60;j--;)for(i=240;i--;x.fillRect(i*4,j*9,4,9))f=i+t*60,n=T(0|(j+f^f-j)/(t/2+6)),x.fillStyle=`hsl(${120*i},99%,${n*9%50}%`

Nov 4 2018 5:42 AM UTC

}// 139/140

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u/tomxor

Hah, it fits! awesome
u/tomxor

#crt #fractal
u/magna

It's monochrome, unfortunately. I couldn't find a quick way to add color (i.e. adjust the intensity based on R/G/B cells.)
u/tomxor

I can sort of fudge the colour with some kind of mod3 to selectively modulate the intensity in lum: (2+i%3)*n*10%50 duno how to fit it though.
u/magna

Nice! I used the dweet compressor (d/9207) to compress it: d/10843

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@no_identd

remix of d/4509 by u/ben

function u(t) {

function v(a,b,g,r){if(r>1){x.fillRect(a+=r*S(g),b-=r*C(g),.1,1)
v(a,b,g-1+C(t),r*=.7634541)
v(a,b,g+.1+S(t),r)}}c.width=540
v(250,270,0,80)

Jan 17 2018 2:00 PM UTC

}// 140/140

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FireFly

remix of d/1690 by u/FireFly

function u(t) {

s=t?t<.1?s.replace(/\d/g,i=>+i?'-0+1+0-':'+1-0-1+'):s:'0';c=s[t*60|0];c<2?x.translate(0,16,x.fillRect(0,0,3,16)):x.rotate(c+1.05)

Mar 3 2017 4:49 PM UTC

}// 129/140

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Same as parent, but golfed and abusing time for the first 6 frames to evaluate/expand the L-system. The straight line at the start is an artifact of this and the particular choice of system.

u/donbright

love this method
u/SpecialAgent

love this series
u/katkip

#fractal

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icecuber

function u(t) {

c.width=1920;for(i=128;i--;)for(j=128-i;j--;)(j^i)==(j|i)?x.fillText('▲',960+(j-i)*3,199+(i+j)*5):0

Feb 21 2016 11:14 PM UTC

}// 99/140

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u/lionleaf

#fractal

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rodrigo.siqueira

remix of d/28624 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(a=b=t,i=7e3;i--;a+=(r=i*t/b&1)*3.1-b*S(a*2)/4-a*a/4.17,b=b/2-C(a*3))x.fillRect(4e3-a*7e3+b**3*i,500-b*2e3,.2,1)

Oct 9 2023 3:45 PM UTC

}// 140/140

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Reflections of fractal leaves #fractal #plant

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rodrigo.siqueira

remix of d/28300 by u/rodrigo.siqueira

function u(t) {

f=n=>Math.abs(n+~n+.5)
for(c.width%=W=X=2e3;X--;)for(Y=1,k=8;k--;x.fillRect(X,Y*(W-9/t/t)-999,C(Y+4.5),W))Y-=Math.abs(f(3**k*X/W)-.3)/3**k

Aug 17 2023 1:47 AM UTC

}// 138/140

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Highest mountain #fractal

u/jdspugh

Borobudur

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