New #slow_render 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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joe.m

remix of d/15836 by u/joe.m

function u(t) {

if(!t){for(i=n=2601;i--;u[i]=1)q=2;j=q*q}
if(u[q-1]&j<n){u[j-1]=0;x.fillRect(37*((j-1)%51),21*((j-1)/51|0),35,19);j+=q}else{q++;j=q*q}

Sep 30 2019 6:18 PM UTC

}// 134/140

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what's left is #prime

u/joe.m

#eratosthenes #sieve
u/joe.m

#slow_render
u/pavel

false, 1 is not prime :)

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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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katkip

remix of d/894 by u/iverjo

function u(t) {

i=frame;for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a-b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillStyle=R(0,k);x.fillRect(i*2,j,C(k)*2,5)}

Sep 27 2018 2:24 PM UTC

}// 140/140

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Mandeldistort #mandelbrot #slow_render #scanline #fractal

u/katkip

#waitforit it actually gets better than I expected
u/joeytwiddle

Nice fresh style

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DataMeta

remix of d/1428 by u/irregularshed

function u(t) {

for(i=1920;i--;)v=(t*60)%1080,l=(i^v)%256&frame,
x.fillStyle=R(l,l/4,l*3),x.fillRect(i,v,1,1)

Aug 4 2018 6:59 PM UTC

}// 93/140

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Simple test inspired by firegodjr's bitwise dweets

u/fujimotos

#scanline #slow_render

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firegodjr

remix of d/8941 by u/firegodjr

function u(t) {

if(!t)c.width=400,v=0
F=n=>{for(i=n;i-->2;)n=n%i==0?0:n;return n>1}
v++
for(j=400;j--;)F(j^v)?x.fillRect(j,v,1,1):0

Jul 26 2018 9:21 PM UTC

}// 115/140

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This is your brain on bitcoins. #prime

u/DataMeta

Good stuff. I see the death star trench
u/fujimotos

#scanline
u/fujimotos

#slow_render

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veubeke

function u(t) {

s=t&15
T=t>>4
for(i=2;i--;x.fillRect((t%16+s-T%2*2+i)*72,y*9-20,2,50))_=t%2*3,y=T*4+(i?s%2*2:C(_)+1)*2,x.fillStyle=R($=S(!i*_)*20+200-y,$,$)

Jun 4 2018 10:39 PM UTC

}// 140/140

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u/magna

Neat!
u/aleamb

cool
u/iverjo

Nice! 3D #hexagons #perspective #shading
u/iverjo

#slow_render

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Tesseract

remix of d/8200 by u/Tesseract

function u(t) {

for(i=999;i--;)r=Math.random()*8&7,
x.fillRect(T=243*(r*.4|0)+T/3|0,C=243/2*(r%3*5&6)+C/3|0,1,1)

May 22 2018 9:10 PM UTC

}// 96/140

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u/joeytwiddle

Nice technique to skip the middle :)
u/zanella

Fractals are awesome!
u/S.T.L.K.R.

DAMN IT MAN :O
u/fujimotos

#slow_render #fractal

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yonatan

remix of d/7305 by u/yonatan

function u(t) {

for(i=2e3,n=99;i--;x.fillStyle=R(q=(Y+1)*n,q/3,n-q),x.fillRect(i,t*n-(Y|0)*n,1,n*n))for(Y=0,j=4;j--;)Y+=C(((i-960)+S(t+Y)*n*j*j)/2**j/t/9)

Mar 13 2018 7:28 AM UTC

}// 139/140

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Canyons

u/yonatan

added perspective like in d/7303
u/joeytwiddle

Beautiful!
u/aleamb

great!
u/magna

(ノಥ,_｣ಥ)ノ彡┻━┻
u/joeytwiddle

#landscape #slow_render #hiddengem

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joeytwiddle

remix of d/7301 by u/yonatan

function u(t) {

for(x.beginPath(i=1920);i--;x.lineTo(i,t%9*99+(Y|0)*8*t))for(Y=0,j=4;j--;)Y=Y+S(((i-960)/t+S(t+Y)*299*j*j/t)/(40*2**j));
t<9&&x.stroke()

Mar 12 2018 11:13 AM UTC

}// 136/140

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jagarikin inspired wireframe landscape

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u/joeytwiddle

Nice work by yonatan. I am happy to abuse all the spare characters they saved!
u/joeytwiddle

To finish it off: s/t%9/t/ ; s/t<9/t<15/
u/aleamb

wow! love it!!
u/iverjo

Neat!
u/iverjo

#landscape
u/fujimotos

#scanline
u/fujimotos

#slow_render

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yonatan

function u(t) {

for(x.beginPath(i=1920);i--;x.lineTo(i,t*99+(Y|0)*99))for(Y=0,j=4;j--;)Y=Y+S((i+S(t+Y)*99*j*j)/(40*2**j))
x.stroke()

Mar 12 2018 11:01 AM UTC

}// 116/140

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https://twitter.com/jagarikin/status/9715426…

u/aleamb

fucking cool!
u/fujimotos

Great! This really opens up whole new space...
u/fujimotos

#landscape
u/fujimotos

#scanline
u/fujimotos

#slow_render

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