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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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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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rodrigo.siqueira

remix of d/21610 by u/rodrigo.siqueira

function u(t) {

for(var i=1081;i--;x.fillRect(t*60,i,1,1-S(f(0,0,80))))f=(X,Y,n)=>T(Y*X)<4&&n?f(X*X-Y*Y+t/9-2.3,2*X*Y+i/450-1.2,n-1):n*4

Feb 9 2021 11:45 AM UTC

}// 120/140

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Noisy Mandelbrot #mandelbrot #fractal

u/Xen

nice!

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Tesseract

function u(t) {

for(j=c.width=128;j--;g(j&7,k=j>>3)>t%4||x.fillRect(j%8*9,9*k,9,9))g=(x,y)=>x|y&&(x>3?4-g(7-x,y):(o=y>>2)+g([y,x][o]%4<<1,[x,y][o]%4<<1)/4)

Nov 26 2020 9:20 AM UTC

}// 139/140

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Hilbert curve

u/Tesseract

It's basically a coincidence that the recursive function terminates - it takes more calls than you'd expect and it doesn't work if you try scaling it up.
u/Tesseract

#fractal
u/Xen

nicely done!

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ntsutae

remix of d/20301 by u/rodrigo.siqueira

function u(t) {

孒=(乂,丫,卌=0)=>乂*乂>3?卌:孒(1+乂*丫*3,S(乂*乂*40)*Math.abs(乂-丫),卌+36);for(工=山=2e3;工--;x.fillRect(工,t*60,1,色))x.fillStyle=R(色=孒(工/山+.25,t/19-.8),色,色)

Nov 11 2020 3:16 PM UTC

}// 139/140

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#fractal

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rodrigo.siqueira

remix of d/19818 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=3)=>Y*Y+X*X>4?n:f(2*X*Y+.7,Y*Y-X*X,n+16);for(i=2e3;i--;x.fillRect(i,t*60,1,1))x.fillStyle=`hsl(${K=f(i/3e3,t/45)},99%,${S(K)*90}%)`

Sep 1 2020 2:27 PM UTC

}// 140/140

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Deep #fractal spirals

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rodrigo.siqueira

remix of d/18379 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,a=0,b=0,n=190)=>a<n?f(X,a*a-b*b+X,2*a*b+t/9-1,n-6):x.fillStyle=`hsl(0,50%,${S(a)*n}%`;i--;x.fillRect(i,400*t,2,i))f(i/4e3-.4)

Apr 21 2020 8:38 PM UTC

}// 140/140

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Stochastic #Mandelbrot zoom #fractal

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ersagun

remix of d/18292 by u/ersagun

function u(t) {

if(!t)B=[-1,0,1,A=0],X=Y=700;z=frame;while(~z&1)z/=2;x.fillRect(X+=B[(A+=z&3)&3],Y-=B[~A&3],1,1)

Apr 16 2020 11:39 PM UTC

}// 96/140

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Dragon curve #fractal This is all I can golf.

u/ersagun

It may have an integer overflowing problem with the angle. I couldn't wait that long to confirm it.

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