d/531 by BriSeven

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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BriSeven

remix of d/530 by u/BriSeven

function u(t) {

r=Math.random;for(i=0;i<1024;i++)
x.fillStyle=R((d=(t%220*i/64)|0)%256,d/1.4%256,d/7%256),
x.fillRect((r()*1080&i)-(i/2)+1920/2,i*.9,2,2)

Dec 22 2016 4:08 AM UTC

}// 137/140

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u/iverjo

At first I didn't realise it was multicolor. It gets interesting after 20 seconds, when the green color crawls from the bottom, and other colors follow


      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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