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/18558 by u/rodrigo.siqueira

function u(t) {

for(let i=2e3,f=(X,Y,n=21)=>X*X<n?f(X*X-Y*Y-.85,2*X*Y+.2,n-1):x.fillStyle=`hsl(9,99%,${n**2}%`;i--;x.fillRect(i,t*60,1,999))f(i/490-2,1-t/9)

May 1 2020 3:20 PM UTC

}// 140/140

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Red Dragon #Julia #Fractal (wait for it)

u/KilledByAPixel

Very nice

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rodrigo.siqueira

remix of d/18551 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=0)=>X*X<9||Y<9?f(X*X-Y*Y-.4,2*X*Y-.7,n+2.5):x.fillStyle=`hsl(0,75%,${n}%`;i--;x.fillRect(i,t*60,1,999))f(i/480-2,1-t/9)

Apr 30 2020 1:52 AM UTC

}// 138/140

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#Fractal star filaments from #Julia set

u/aleamb

wow! amazing!
u/PoweredByWill

Wow. Why does this remind me of the credits from Total Recall?

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rodrigo.siqueira

remix of d/18531 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=11)=>X/Y<n?f(X*X-Y*Y-.8,2*X*Y+.2,n-.3):x.fillStyle=`hsl(0,99%,${n**1.9}%`;i--;x.fillRect(i,t*60,1,999))f(i/490-2,1-t/9)

Apr 29 2020 5:41 PM UTC

}// 138/140

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#Julia set fibers. #fractal similar to "Pickover stalk" and biomorph forms. Using this compact form of the test: X/Y < n

u/rodrigo.siqueira

#pickover

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rodrigo.siqueira

remix of d/18440 by u/rodrigo.siqueira

function u(t) {

for(let i=2e3,f=(X,Y,n=59)=>X*Y<n&&f(X*X-Y*Y-.8,2*X*Y+.2,n-1,x.fillStyle=R(C=(X<Y)*i/Y,C/3));i--;x.fillRect(i,t*180,1,3))f(i/490-2,1-t/3)

Apr 28 2020 5:10 PM UTC

}// 137/140

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Orange black #Julia set #fractal

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pavel

function u(t) {

f=(X,y,r=80,a=0)=>r>6&&[0,.4,-.4,0].map(o=>o?f(X+r*S(a)*C(X*y/4e4+t),y-r*C(a),r*.8,a+o):x.lineTo(X,y));c.width=640;f(320,360);x.stroke()

Apr 24 2020 8:23 AM UTC

}// 136/140

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Rotating #tree #fractal

u/pavel

Inspired by https://twitter.com/ntsutae/status/125356447…
u/neimad

You should do a twitch channel. amazing.
u/ntsutae

I’m honored.
u/pavel

u/ntsutae :O I love your stuff on twitter! 素晴らしですよ
u/vain

Great 3D version !!

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rodrigo.siqueira

remix of d/18364 by u/rodrigo.siqueira

function u(t) {

for(let i=2e3,f=(X,Y,n=99)=>X<n?f(X*X-Y*Y-.83,2*X*Y+.2,n-.7):x.fillStyle=`hsl(0,99%,${n}%`;i--;x.fillRect(i,t*180,1,999))f(i/490-2,1-t/3)

Apr 22 2020 11:25 PM UTC

}// 137/140

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Rose #Julia #fractal

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tomxor

remix of d/18323 by u/pavel

function u(t) {

f=(x,y,n=w)=>x<n?f(x*x-y*y-.8,2*x*y+.2,n-1):S(n/9)
for(w=c.width=99,i=6e3;i--;)
x.fillRect(X=i%w,Y=i/w,1,f((X-49)/t**8,(Y-28)/t**8-.703956))

Apr 22 2020 7:38 PM UTC

}// 140/140

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#zoom #julia #fractal

u/tomxor

Including x<n and .2i from u/rodrigo.siqueira
u/xem

amazing! how many extra bytes to have it less pixellized?
u/tomxor

Only +2 for 1/4 HD: d/18436 but your CPU will cry :P in fact full HD fits but you have to start measuring the speed in seconds per frame.
u/iverjo

Impressive!

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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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rodrigo.siqueira

remix of d/18322 by u/pavel

function u(t) {

for(i=2e3,f=(X,a=0,b=0,n=99)=>a<n?f(X,a*a-b*b+X,2*a*b+t/4-1.1,n-2):x.fillStyle=`hsl(${n*6} 50% ${n}%`;i--;x.fillRect(i,120*t,1,i))f(i/660-2)

Apr 21 2020 4:06 PM UTC

}// 140/140

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Color #mandelbrot set #fractal

u/Xen

smooth!
u/KilledByAPixel

fast!
u/Toby

Beautiful!

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KilledByAPixel

remix of d/18296 by u/KilledByAPixel

function u(t) {

for(i=s=540;i;S||x.fillRect(960+A*s,B*s+s,T/59,2))S=S*T--?2*S*C+(C=C*C-S*S+.28,.008):(C=B=--i/270-1,T=99,A=t/9-2)

Apr 21 2020 3:44 PM UTC

}// 113/140

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Julia Set c=.28+.008i #Fractal #Julia

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