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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ben

remix of d/4509 by u/ben

function u(t) {

v=(a,b,g,r)=>{for(i=0;i++<r;)x.fillRect(a+=S(g),b-=C(g),r/9,2)
r>1?v(a,b,g+=o,r*=.7)&v(a,b,g+=5,r):0}
o=S(t)/9+1
c.width=500
v(250,280,0,80)

Dec 29 2017 1:23 PM UTC

}// 140/140

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blowing in the fractal wind

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u/sigveseb

Sweet!
u/Xen

very nice!
u/Bendoman

Fabulous.
u/lionleaf

Amazing!
u/lynnlangit

love, love, love it!
u/nystrand

elegant!
u/iverjo

#recursive
u/lionleaf

#fractals
u/lionleaf

#fractal . hmm, maybe not plural
u/vain

so beautiful - amazing work!

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nystrand

function u(t) {

for(i=w=3e3,a=b=g=333*T(t%9/7);j=(i^a*a)%4,i--;x.fillRect(a+=g+C(j*5+t)*g-a/2-w+g,b+=g+S(j*9+t)*g-b/2-w,s,s),w=2)x.fillStyle=R(s=w*9,w,s,.1)

Dec 28 2017 2:50 PM UTC

}// 140/140

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u/sigveseb

This one is fantastic! Good job indeed
u/Bendoman

Brilliant!
u/Xen

very very impressive!
u/magna

HOW ON EARTH
u/nic

MIND:=BLOWN
u/lowpoly

Gawd, I learnt a lot today
u/Citiral

Since when does Javascript support black magic?
u/sigveseb

Needs more upvotes!
u/doof

this was such a delight to unpack :)
u/Lazy1337

wow
u/aleamb

amazing
u/iverjo

I'm awestruck
u/xem

unbelievable
u/trapkid

lol
u/aleamb

epic! one of the greatest dwitter
u/ThreeNPlusOne

sierpinski triangle :D
u/xem

It'd be nice to have a blog post explaining it :) (please?)
u/trupples

I didn't look much into it but it might have to do with a thing I read about once where if you have a point that "walks" half the distance towards a random corner of a triangle you'll end up drawing a sierpinski triangle sorta like you can see in https://www.dwitter.net/d/5097
u/trupples

And according to http://distrustsimplicity.net/articles/sierp… if you were to use 4 points instead of 3 you'd get a tetrahedron like in this dweet. Fascinating stuff
u/stiaje

#witchcraft
u/lionleaf

#top_of_the_year
u/Scaledish

wow
u/Tekmap

👏👏👏👏👏
u/vain

that's not from this world! incredible code / 3d fx and blur
u/rodrigo.siqueira

3D flying #sierpinski pyramid #fractal

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space_hopper

function u(t) {

if(!t)r=Array(1920).fill(0),r[940]=1
o=r.slice()
for(i=1918;i;){if(o[i]>0)x.fillRect(i,t*60,1,1)
r[i]='01101001'["0b"+o[i+1]+o[i]+o[--i]-0]}

Dec 28 2017 1:34 AM UTC

}// 140/140

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u/rep_movsd

#fractal

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Xen

remix of d/1201 by u/bligglenuber

function u(t) {

x.fillStyle=`hsl(${(t*=5e2)/2},80%,50%)`
x.globalCompositeOperation='difference'
x.fillRect(t%1920,t%1080,9,9)
x.drawImage(c,0,9)

Nov 3 2017 8:09 PM UTC

}// 129/140

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it's raining rainbow sierpinski triangles!

u/zanella

I just did https://www.dwitter.net/d/4677, but yours kicked the hell out of mine. :D
u/Xen

thank you :-)
u/f8f82804

#rainbow #fractal

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joeytwiddle

remix of d/531 by u/BriSeven

function u(t) {

for(i=600;i--;x.fillRect(X=X+400+c*600>>1,Y=Y+1076*(1-c&1)>>1,4,4),H=H+400*(c+t)>>2)c=(i*t^i)%3,t?x.fillStyle=`hsl(${H},50%,50%)`:X=Y=H=0

Aug 21 2017 4:02 PM UTC

}// 137/140

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Sierpinksbow

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u/joeytwiddle

i*t^i is a poor but short PRNG
u/sigveseb

Upvote for the colors
u/BriSeven

fantastic
u/joeytwiddle

I forgot to brighten the dull colors. Try 90%,60%
u/donbright

my new favorite sierpinski
u/joeytwiddle

Big brother: https://www.dwitter.net/d/3458
u/joeytwiddle

Another with colour: d/2668
u/iverjo

#sierpinski
u/CocoMeister

#fractal
u/joeytwiddle

#rainbow

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New_Core

function u(t) {

a=t*60
if(a<2e3){
for(b=1080;b--;){
A=a/400-3,B=b/400-1.4
d=A,e=B
for(i=20;i--;)D=d*d-e*e+A,E=2*d*e+B,d=D,e=E,d*e>5?x.fillRect(a,b,1,1):0
}}

Jul 9 2017 7:52 PM UTC

}// 140/140

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u/donbright

i ran this on firefox and i swear some of the little gray pixels are twinkling like little stars. it looks really cool in full screen too.
u/cantelope

amazing
u/New_Core

#fractal

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nonce

remix of d/894 by u/iverjo

function u(t) {

for(i=c.width=99;i--;){for(j=55;j--;){for(k=32,a=b=0;--k&&a*a+b*b<4;a=_)_=a*a-b*b+(i-27)/t**3-7/4,b=2*a*b+(j-27)/t**3;x.fillRect(i,j,1,!k)}}

Apr 2 2017 3:40 AM UTC

}// 140/140

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This is a zoom into the mini-mandelbrot at -1.75 + 0i

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u/donbright

super cool, amazing.
u/Renaud___

Nice
u/jick

Holy cow, this is great.
u/ObjectDisoriented

Did you just do a low res mandlebrot in 140 characters? Way more awesomes needed.
u/sigveseb

Nice! Here's mine from a while back: https://www.dwitter.net/d/1735
u/iverjo

#mandelbrot #fractal
u/katkip

no way

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walsh9

function u(t) {

c.width|=Y=(d,e,a,l)=>l?(x.moveTo(d,e),x.lineTo(d+=l*9*C(a),e+=l*9*S(a)),Y(d,e,a-S(t),--l),Y(d,e,a+S(t),l)):0;Y(960,999,4.71,14),x.stroke()

Mar 4 2017 5:56 PM UTC

}// 140/140

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fullscreen recommended

u/donbright

unbelievable!!!! wow
u/SpecialAgent

wonderful!
u/CocoMeister

#fractal

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FireFly

remix of d/1690 by u/FireFly

function u(t) {

s=t?t<.1?s.replace(/\d/g,i=>+i?'-0+1+0-':'+1-0-1+'):s:'0';c=s[t*60|0];c<2?x.translate(0,16,x.fillRect(0,0,3,16)):x.rotate(c+1.05)

Mar 3 2017 4:49 PM UTC

}// 129/140

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Same as parent, but golfed and abusing time for the first 6 frames to evaluate/expand the L-system. The straight line at the start is an artifact of this and the particular choice of system.

u/donbright

love this method
u/SpecialAgent

love this series
u/katkip

#fractal

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sigveseb

function u(t) {

t*=5;for(c.width=s=X=64;X--;)for(Y=37;Y--;1-Q*Q-W*W>0&&x.fillRect(X,Y,1,1))for(j=40,Q=W=E=0;j--;Q=E)E=Q*Q-W*W-X/t/t+5/t,W=2*W*Q-Y/t/t+.66

Mar 2 2017 2:02 AM UTC

}// 137/140

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u/sfz

Nice Mandelbrorshach!
u/iverjo

That's pretty impressive
u/sigveseb

#fractal #zoom
u/katkip

Awesome
u/katkip

#mandelbrot

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