static, but slightly higher res by Irratix

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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Irratix

remix of d/23081 by u/Irratix

function u(t) {

t&&A
for(i=456,c.width=455;i--;)for(j=256;j--;x.fillRect(i,j,1,1))x.fillStyle=R(...j&i^j?[~i&255|j,,j+i&201]:[,3*(i-9)*i%j<<2,i-100^j])

Jun 10 2021 7:15 PM UTC

}// 135/140

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static, but slightly higher res

u/KilledByAPixel

Full res... for(t*=60,j=2e3;j--;x.fillRect(t,j,1,1))x.fillStyle=R(...j&t^j?[~t&255|j,,j+t&201]:[,3*(t-9)*t%j<<2,t-99^j])


      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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