d/9098 by mvs202

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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mvs202

function u(t) {

χ=S(t)*960
c=(h,a,b)=>{χ<0?x.fillStyle=`hsl(${h%360},99%,50%,0.2`:0
x.fillRect(960-χ,a,χ*2,b)}
c(t*53,0,300)
c(t*59,315,150)
c(t*47,480,600)

Aug 4 2018 3:45 PM UTC

}// 140/140

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u/katkip

This can be good as a animated desktop wallpaper
u/magna

Keeps on giving
u/iverjo

#colors
u/lionleaf

Beautiful! Broken on #Edge and some other #browsers though. Should be possible to fix, but tagging it now so it's easy to find later :)
u/mvs202

Yeah, the problem is Edge doesn't like the 4th parameter in hsl() - I would need hsla() for that. Surprisingly, no one bothered by the lack of a closing paran in the hsl function!


      u(t) is called 60 times per second.
      t: elapsed time in seconds.
      c: A 1920x1080 canvas.
      x: A 2D context for that canvas.
      S: Math.sin
      C: Math.cos
      T: Math.tan
      R: Generates rgba-strings, ex.: R(255, 255, 255, 0.5)

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