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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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rodrigo.siqueira

function u(t) {

for(i=2e3;i--;x.fillRect(i,t*240,h/=9,4)){I=i/430,Y=t/8-1,h=X=.5
for(n=9;n--;X*=Y*I*(1-X)*(1-I*X*(1-X)))h+=Math.log2((Y*I*(1-1.5*X))**2)}

Feb 1 2021 6:51 PM UTC

}// 137/140

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Lyapunov #Fractal - "A Lyapunov fractal is constructed by mapping the regions of stability and chaotic behaviour (measured using the Lyapunov exponent)." They said it couldn't be done but yet here it is.

u/rodrigo.siqueira

#lyapunov

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rodrigo.siqueira

remix of d/21504 by u/rodrigo.siqueira

function u(t) {

f = (X,Y,n=120)=>X<8 ? f(S(X)**2+S(Y+1)*Y*.8-.3,2*X*Y+.7,n-5):n/2
for(var i=1921;i--;) {
 x.fillRect(i,t*60,.5-f(i/210-4.5,t/6-2)/30,1)
}

Jan 31 2021 8:50 PM UTC

}// 138/140

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Lyap arcs #fractal

u/rodrigo.siqueira

#lyapunov

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Pascal

remix of d/21425 by u/Pascal

function u(t) {

f=(X,Y,n=64)=>Y-X<n?f(X*X-Y*Y-.3,2*X*Y+.7,--n):255-n*4
for(i=2e3;i--;x.fillRect(t*180,i,6,1))x.fillStyle=R(f(t/55.56-.4,i/1e4-.24),30,60)

Jan 28 2021 1:31 PM UTC

}// 137/140

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neon flowers

u/rep_movsd

Garden of Dormamu
u/aleamb

#fractal

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rodrigo.siqueira

remix of d/21456 by u/rodrigo.siqueira

function u(t) {

f = (X,Y,n=120)=>T(S(X+Y/5)*2)<9 ? f(X*X-Y*Y,2*X*Y+.7,n-2):n
for(var i=1920;i--;) {
 x.fillRect(i,t*120,.5-f(i/40000-.45,t/300+.205)/40,2)
}

Jan 27 2021 1:28 PM UTC

}// 140/140

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Black&white #julia noir #fractal noise (code not golfed)

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danny@hille.dk

remix of d/21456 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=98)=>Y*Y>n?n:f(4*X*Y-.61,Y*Y*3-X*X,n+1)
for(m=i=1080;i--;x.fillRect(i*2,t*60,2,1))x.fillStyle=R(0,K=f(i/(m*19-t),t/m),K*K,S(K/9))

Jan 26 2021 6:44 PM UTC

}// 138/140

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blue zap remix

u/Xen

nicely done
u/danny@hille.dk

#fractal

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rodrigo.siqueira

remix of d/21453 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=99)=>T(X-S(Y))<9?f(X*X-Y*Y,2*X*Y+.7,n-1):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 4:11 PM UTC

}// 140/140

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Shaky lines #fractal

Show more comments…
u/danny@hille.dk

Love it!! reminds me of a Salvador Dali painting
u/aaaaaz

crazy !
u/DataMeta

woww this is beautiful!
u/DataMeta

my new lock screen wallpaper :) #abstract #art
u/rodrigo.siqueira

I created an animated version here: https://www.shadertoy.com/view/wtGcWc it's super fast and hypnotic. View in full screen!
u/danny@hille.dk

I just saw your "Super Julia Fractal" on shadertoy it is very cool!

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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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