Top #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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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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iverjo

remix of d/123 by u/icecuber

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(k,j,i);x.fillRect(i,j,1,S(k/9))}

Feb 22 2017 6:10 PM UTC

}// 140/140

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Color version, a minified version of myJS's suggestion

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u/bakkot

golf'd slightly harder on general principles: i=frame;for(j=1080;j--;x.fillRect(i,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/donbright

niiiice
u/Krachwumm

This is freaking amazing. Even if it would have taken you 1000 characters
u/iverjo

Thanks bakkot! I golfed your version even further down to 134 characters: for(j=1080;j--;x.fillRect(i=frame,j,1,S(k/9),x.fillStyle=R(k,j,i)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1
u/iverjo

Feel free to play with the colors! There's room for improvement
u/hamptonio

That's a work of art man
u/SpecialAgent

I must commend you! Did my research and got a working mandelbrot, but to golf it to 140 and get the speed is very very difficult! Wow. I will study your dweet now :)
u/iverjo

#fractal
u/iverjo

#mandelbrot
u/iverjo

#slow_render
u/f8f82804

#scanline

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icecuber

function u(t) {

t?i++:i=0;for(j=1080;j--;){a=b=0;k=35;for(;k--&&a*a+b*b<4;)c=a*a-b*b+i/540-2,b=2*a*b+j/540-1,a=c;x.fillRect(i,j,1,S(k/9))}

Apr 13 2016 1:46 PM UTC

}// 122/140

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u/iverjo

115 bytes: for(j=1080;j--;a=b=0){for(k=35;k--&&a*a+b*b<4;a=y)y=a*a-b*b+t*60/540-2,b=2*a*b+j/540-1;x.fillRect(t*60,j,1,S(k/9))}
u/iverjo

Here's one that draws faster: for(i=4;i--;){for(j=1080;j--;a=b=0){for(k=35;k--&&a*a+b*b<4;a=y,l=t*240+i)y=a*a-b*b+l/540-2,b=2*a*b+j/540-1;x.fillRect(l,j,1,S(k/9))}}
u/iverjo

Nvm, they depend on various variables being defined. I was fooled.
u/myJS

How about colors? t?i++:i=0;for(j=1080;j--;){a=b=0;k=35;for(;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(k,j,i);x.fillRect(i,j,1,S(k/9))}
u/sfz

Nice enhancement myJS!
u/lionleaf

#scanline #slow_render #fractal #fractals

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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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3bl3gamer

function u(t) {

for(i=2<<14;a=frame*8+i%8,b=i>>3,m=a-999,n=b-999,i--;)l=m*m+n*n,l<8e5&&(n*=C(l/3e5-2.6)),(((m/n+9999)%2)^(b/n%2))&&x.fillRect(a/2,b/2,.7,.7)

Aug 19 2016 8:05 AM UTC

}// 140/140

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Just to see hi-res version of this https://dweet.dwitter.net/id/281?autoplay=1

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u/3bl3gamer

Looks a bit better in FF
u/donbright

oh wow this is cool, space time warp!
u/joeytwiddle

#render
u/lionleaf

#slow_render #scanline
u/Lazy1337

One of the best dweets
u/kkingsbe

How is this possible lol

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iverjo

remix of d/894 by u/iverjo

function u(t) {

for(j=1080;j--;x.fillRect(T=frame,j,1,S(k/9),x.fillStyle=R(k,j,T)))for(a=b=0,k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+T/540-2,b=2*a*b+j/540-1

Mar 10 2018 12:28 PM UTC

}// 134/140

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Golfed version of the color mandelbrot

u/DirtyDan

I'm a sucker for Mandelbrot dweets. Bravo!
u/iverjo

#mandelbrot
u/iverjo

#fractal
u/iverjo

#slow_render
u/Qwitter

escape time !

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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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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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iverjo

remix of d/464 by u/iverjo

function u(t) {

for(j=1080;j--;){a=b=0;for(k=35;k--&&a*a+b*b<4;a=c)c=a*a-b*b+t*6e-10-1,b=Math.abs(2*a*b)+j/1e11-1;x.fillRect(t*60,j,1,S(k/9))}

Feb 23 2017 5:10 PM UTC

}// 126/140

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Burning ship fractal. Feel free to play with the parameters to find other interesting locations in the fractal

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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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