New #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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Current theme challenge: #Opposites

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rodrigo.siqueira

remix of d/20439 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=120)=>T(X)<9?f(X*X-Y*Y-.8,2*X*Y+.2,n-3):x.fillStyle=`hsl(${i/8},80%,${C(n)*n}%`;i--;x.fillRect(i,t*60,1,1))f(i/3e3,t/50)

Jan 26 2021 1:52 PM UTC

}// 139/140

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Loopy spirals #fractal #julia (same fractal from previous remix, but with new coloring method)

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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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rodrigo.siqueira

remix of d/21425 by u/Pascal

function u(t) {

for(j=9;j--&&t<2;)for(i=600;i--;x.fillRect(a=t*60+j*200+99,i+240,2,f(a/2400-.6,i/900+.2)))f=(X,Y,n=80)=>Y<n?f(X*X-Y*Y,2*X*Y+.7,--n):n/80

Jan 24 2021 11:20 PM UTC

}// 136/140

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#fractal flowers #default

u/Qwitter

Yes! - also, great way to keep general audiences interested in watching the longer calculations unfold, thanks.

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danny@hille.dk

remix of d/21414 by u/Pascal

function u(t) {

f=(X,Y,n=99)=>X*X+Y*Y<n?f(X*X-Y*Y-.8,2*X*Y-.2,--n):n/99
for(X=2e3;X--;)x.fillRect(X,Y=t*180,f(X/600-1.6,Y/600-.9)**2,3)

Jan 23 2021 9:42 PM UTC

}// 119/140

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golf and play

u/danny@hille.dk

#fractal

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Pascal

function u(t) {

f=(X,Y,n=80)=>X*X+Y*Y<n?f(X*X-Y*Y-.8,2*X*Y-.2,--n):n/80
for(X=1920;X--;)x.fillRect(1920-X,Y=t*60,a=1-f(X/600-1.6,Y/600-.9)**2,a)

Jan 23 2021 9:03 PM UTC

}// 128/140

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#julia #fractal for c = -0.8 - 0.2i

u/Qwitter

Cool.

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rodrigo.siqueira

remix of d/21282 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
x.fillRect(t*60,t*360,4,4)
x.fillStyle=`hsl(${-t*60},90%,50%)`
x.drawImage(c,5,0)
x.globalCompositeOperation='xor'

Jan 19 2021 11:34 PM UTC

}// 139/140

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Falling #sierpinski #fractal

u/Qwitter

for some unkown reason this color scheme reminds me of colecovision. Nice!

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rodrigo.siqueira

remix of d/21272 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
x.globalCompositeOperation='xor'
x.fillRect(K=t*240,900.18-S(t)*99.3,1,2)
x.drawImage(c,1,-1)
x.drawImage(c,-K,-K)

Jan 16 2021 12:31 AM UTC

}// 139/140

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Sierpinski paper wave #fractal #sierpinski

u/Qwitter

thats my kind of book
u/Xen

love it!

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rodrigo.siqueira

remix of d/5958 by u/Jezza

function u(t) {

x.fillRect(K=4*frame,1078,4,2)
x.drawImage(c,1,-1)
x.drawImage(c,1,-1)
x.drawImage(c,-K/2,-8*frame)
x.globalCompositeOperation='xor'

Jan 14 2021 4:47 PM UTC

}// 132/140

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Sierpinski Plotter #fractal #sierpinski #generator #fullscreen

u/Qwitter

Cantor Stalagmites Too
u/erin

frame >> t*60
u/codingsilver

fractal finesse

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Xen

function u(t) {

t?z>99?(i+=e,e=4,f+=z=1):x.fillText(f%(z*=4)==z/2?e=1:0,g+=C(y=355/339*i),h-=S(y)):e=z=h=f=i=g=134

Dec 25 2020 10:04 PM UTC

}// 98/140

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98byte Koch #snowflake

u/jwc

This is beautiful!
u/DataMeta

Yes! #waitforit
u/Xen

#fractal

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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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