New #rainbow 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: #Opposites

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rbong

function u(t) {

for(X=960;X--;x.fillStyle=`hsl(${(t+k)*25},99%,50%)`,x.fillRect(X*2,t%9*120,2,2))for(r=i=0,k=45;--k/r;i=j)j=2*r*i+1-t%9/54,r=r*r-i*i-X/4800

Oct 28 2018 8:38 PM UTC

}// 139/140

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Scanline Rainbow Mandelbrot Section

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u/rbong

I've spent quite a bit of time now trying to get a faster, more detailed mandelbrot set or other interesting fractal that hasn't been done in fewer characters. This has included exploring obscure fractals like those generated from polynomial roots, using image data as storage or other memoization, and the dweet earlier that used WebAssembly with a new compression technique. I'll keep exploring these ideas, but this experiment bore the quickest result. #fractal #mandelbrot #scanline #rainbow
u/rbong

Oh yeah, I also tried MAndelbrot perturbation. It's pretty expensive for these purposes but I might be able to do something similar.
u/Xen

Love it!
u/tomxor

I'd love to see more fractals, especially more esoteric ones, keep up the good work rbong.
u/katkip

Great job bro!! I love this one!
u/lionleaf

Amazing!
u/iverjo

#slow_render

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rbong

remix of d/10574 by u/rbong

function u(t) {

for(n=200;n-=1/64;x.fillStyle=`hsl(${t*k*30},99%,50%)`,x.fillRect(n%3*666,n*5,16,16))for(r=i=0,k=28;--k/r;i=j)j=2*r*i+1-n/99,r=r*r-i*i-(n%3)

Oct 21 2018 3:46 PM UTC

}// 140/140

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Rainbow Cycling Mandelbrot

u/rbong

#rainbow #fractal #mandelbrot
u/rbong

This version has true color cycling, an animated Julia set, and is centered, but it's 18 characters over:
u/rbong

for(n=200;n-=1/64;x.fillStyle=\`hsl(${t*999+k*22},99%,50%)\`,x.fillRect(n%3*666,n*5,16,16))for(r=C(t*3),i=S(t*4),k=28;--k/r;i=j)j=2*r*i+1-n/99,r=r*r-i*i+1-(n%3)

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rbong

remix of d/697 by u/p01

function u(t) {

for(n=210;n-=1/64;x.fillStyle=`hsl(${k*22},99%,50%)`,x.fillRect(n%3*666,n*5,16,16))for(r=C(t),i=S(t),k=28;--k/r;i=j)j=r*i-n/99,r=r*r-i*i-n%3

Oct 20 2018 5:53 PM UTC

}// 140/140

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Rainbow Fractal Slice

u/rbong

#fractal #rainbow
u/prplz

#heavy
u/rbong

Looks a bit heavier than the original because I had to slow it down, but it's the same intensity. I would like to make a faster Mandelbrot/Julia set. This is closer to the original effect:
u/rbong

c.width|=0;for(n=200;n-=1/64;x.fillStyle=hsl(${k*22},99%,50%),x.fillRect(n%3*666,n*5,16,16))for(r=C(t*3),i=S(t*4),k=28;--k/r;i=j)j=2*r*i+1-n/99,r=r*r-i*i+1-n%3
u/rbong

Insert backticks where the style changes in that comment, I can't edit it

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rbong

function u(t) {

w=c.width^=0
for(X=w;X--;){x.fillStyle=`hsla(${X/100+t*50},99%,50%)`
x.fillRect(X,0,5,(3-S((X+t*999)*4/w)+C((X+t*55)*3/w))*200)
}

Oct 13 2018 5:47 PM UTC

}// 129/140

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Rainbow Wave

u/rbong

#rainbow #wave
u/joeytwiddle

I saw a sunset over the desert

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Purpzie

remix of d/3713 by u/bobdunn

function u(t) {

for(i=64;i--;)x.fillStyle=`hsl(${i*5+t*30} 60%${S(t*3)*25+50}%`,x.fillRect(i*30,S(4*t+3*i)*99,20,99);x.drawImage(c,-2,9)

Sep 28 2018 5:14 PM UTC

}// 120/140

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u/joeytwiddle

#rainbow

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katkip

function u(t) {

onmousemove=_=>{x.fillRect(_.x*3.3,_.y*3.3,S(_.x)*50,S(_.y)*50),x.fillStyle=`hsl(${_.x*_.y},99%,50%)`}
x.drawImage(c,S(t)*10,C(t*9)*5)

Sep 23 2018 4:41 PM UTC

}// 134/140

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Move your mouse and create #rainbow #wave s

u/BirdsTweetCodersDweet

#interactive

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katkip

function u(t) {

c.width^=0;for(i=0;i<77;i++)for(j=0;j<44;j++)x.fillStyle=`hsla(${i+t*99+j},99%,50%)`,x.fillRect(i*25,j*25,25,25)

Sep 22 2018 4:50 PM UTC

}// 112/140

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#rainbow

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f8f82804

remix of d/9820 by u/f8f82804

function u(t) {

c.width=w=640;x.font='480px z';for(i=-240;(i+=8)<w;x.fillText('🏳️‍🌈',i,360+16*S(t*3+i/32)));

Sep 14 2018 6:42 PM UTC

}// 92/140

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#rainbow #wave

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f8f82804

function u(t) {

with(x)for(i=c.width^=0,w=i/2;i--;beginPath(stroke()))θ=i/99+t,a=2+C(θ),moveTo(w,i/a),lineTo(w+S(θ)*w/a,i^w),strokeStyle=`hsl(${i} 95%50%`

Sep 9 2018 9:17 PM UTC

}// 138/140

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cursed_lampshade.swf

u/f8f82804

#rainbow #plotter #animated

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katkip

function u(t) {

for(i=0;i<2e2;i++)x.fillStyle=`hsla(${i*2+t*99},99%,50%)`,x.fillRect(960+S(t)*9*i,540+C(t)*9*i,C(t)*i*C(i+t),S(t)*i*C(i+t))

Aug 31 2018 8:23 AM UTC

}// 123/140

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3, 2, 1... SHOOT! #target #rainbow

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