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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katkip

function u(t) {

eval(unescape(escape`瑼簨焽孝Ɒ㴰⤻昽⡘ⱙⱳⱺ⤽㹻楦⡳㸲⥻牥瑵牮⁦⡘⭓⡺⤪猬夫䌨稩⩳ⱳ⼲ⱺ⨳⥽敬獥筲整畲湛堬奝絽㭦潲⡩㴹㤻椭ⴻ⥱㵦⠹㘰ⰵ㐰ⰲ㔰Ɒ⬽⸰〰㔩ⱸ⹦楬汒散琨煛そⱱ嬱崬㌬㌩`.replace(/u(..)/g,"$1%")))

May 24 2019 2:12 PM UTC

}// 126/140

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Awesome fractal spirograph

u/katkip

#fractal #spirograph

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katkip

function u(t) {

x.font='44em"';x.fillText('❤',600,990);x.drawImage(c,370,10,800,500),x.drawImage(c,740,10,800,500),x.drawImage(c,745,360,400,200)

May 5 2019 12:44 PM UTC

}// 129/140

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Heart fractal - best on Chrome

u/katkip

#fractal

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rodrigo.siqueira

remix of d/13591 by u/rodrigo.siqueira

function u(t) {

x.beginPath(x.globalAlpha=.1)
if(t<125.66)for(i=9,j=.1,X=960,k=Y=598;k/=2,i--;j*=-4)X+=S(f=t*(j+.1))*k,Y-=C(f)*k,x.lineTo(X,Y);x.stroke()

May 2 2019 12:50 PM UTC

}// 137/140

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Pentagon of Pentagons #epicycles #fractal #spirograph

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andrea270872

function u(t) {

I=t*3320%2e3;J=(t*94)%1e3
i=A=I/520-2;B=J/520-1
while((A*A+B*B<4)*(i++<40))[A,B]=[A*A-B*B+.3,2*A*B+.02]
x.globalAlpha=.6
x.fillRect(I,J,i,i)

Mar 7 2019 6:22 PM UTC

}// 140/140

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Ghost of Julia ver4 (with alpha!)

u/f8f82804

#dither #halftone #fractal

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andrea270872

function u(t) {

I=(t*3350)%2e3;J=(t*94)%1e3
A=I/1e3-1;B=J/600-1
i=0;while(((A*A+B*B)<4)&&(i<25))[A,B]=[A*A-B*B-.8,2*A*B+.2,i++]
x.fillRect(I,J,i,i)

Mar 7 2019 5:29 PM UTC

}// 131/140

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Ghost of Julia ver2

u/andrea270872

/* LOGIC The point (I,J) depends on t and scans the screen from top-left to bottom-right, then restarts. It also hops of circa 50 pixels in both directions. The point (A,B) is a scaled and translated version of (I,J); (A,B) is centered arund (0,0) and goes approximately from -1,5 to +1.5 in both directions. The loop is a simplified version of the Julia iterated fractal loop: - i starts from 0, and goes max to 25 iterations, and the point starts at z=A+i*B - the function being computed is: Z=Z^2+(-0.8,+0.2) separating real and imaginary part, the formula is: A = A*A-B*B-.8 AND B = 2*A*B+.2 and the notation [A,B] saves me from using a temp variable. The loop exits if: - i is 25 or - distance of (A,B) from (0,0) is more than 2 */
u/f8f82804

#dither #halftone #fractal

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f8f82804

remix of d/11786 by u/joeytwiddle

function u(t) {

(p=(H,X=0,Y=0,I=H)=>H>1?[0,1,2,3].map(i=>p(h=H/2,X+i%2*h,Y+h*(i>1),I+T(++t))):x.fillRect(8*X,8*Y,8,8,x.fillStyle=`hsl(${I} 95%50%`))(256)

Jan 16 2019 6:40 AM UTC

}// 137/140

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#hue #fractal #slow

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katkip

remix of d/11588 by u/katkip

function u(t) {

c.width|=f=(X,Y,d=700+t*80,a=C(d)*500,b=d/2)=>{if(d>20)x.fillRect(X-b,Y-b,d,d),f(X-b,Y,b),f(X,Y-b,b),f(X+b,Y,b)};x.globalAlpha=.2,f(960,800)

Dec 30 2018 1:37 PM UTC

}// 140/140

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#sierpinski using alpha

u/katkip

#fractal, #recursive

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katkip

function u(t) {

eval(unescape(escape`挮睩摴桞㴰㭣牯獳㴨堬夬猩㴾筩昨猾㄰⥸⹦楬汒散琨堭猬夬猪㈬猯㄰⤬砮晩汬剥捴⡘ⱙ⵳ⱳ⼱〬猪㈩Ᵽ牯獳⡘⵳ⱙⱳ⼲⤬捲潳猨堬夭猬猯㈩Ᵽ牯獳⡘ⱙ⭳ⱳ⼲⤬捲潳猨堫猬夬猯㈩紻捲潳猨㤶〬㔴〬㈸〫䌨琩⨹㤩`.replace(/u(..)/g,"$1%")))

Dec 30 2018 9:30 AM UTC

}// 140/140

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Quadric Cross #fractal #recursion

u/katkip

c.width^=0;cross=(X,Y,s)=>{if(s>10)x.fillRect(X-s,Y,s*2,s/10),x.fillRect(X,Y-s,s/10,s*2),cross(X-s,Y,s/2),cross(X,Y-s,s/2),cross(X,Y+s,s/2),cross(X+s,Y,s/2)};cross(960,540,280+C(t)*99)
u/katkip

It could be golfed more but, eh, I would still need compression

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katkip

function u(t) {

if(!t)x.translate(960,540);x.fillStyle=`hsl(${t*100},99%,50%)`;x.fillRect(0,00,10,999);x.drawImage(c,200,200,800,800);x.rotate(2.096)

Nov 17 2018 7:17 PM UTC

}// 133/140

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Mixing #fractal s

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katkip

remix of d/6032 by u/Talesseed

function u(t) {

a=t*60%60;for(n=z=w=0;n++<25&z*z+w*w<4;[z,w]=[z*z-w*w+a/20-2,z*z*w+~~t/20-1])x.fillStyle=`hsl(${n*n},99%,50%)`,x.fillRect(a*32,~~t*27,32,27)

Sep 23 2018 1:18 PM UTC

}// 140/140

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Cursorbrot #fractal

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