d/34413 by DazeWare

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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DazeWare

remix of [deleted]

function u(t) {

c.width=w=99
for(i=w*33;i--;x.fillRect(i%w,i/w*2,1,9))f=i%w+999*S(t*.05),n=T(0|(i/w+f^f-i/w)/(t*.7+6)),x.fillStyle=R((i)*i&n,n,(n&i)*i/n)

Oct 12 2025 9:13 AM UTC

}// 137/140

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u/tomxor

Nostalgiac for me :D I think I chose +t*60 to get rid of the juddering. That doesn't help with sin here, but I think the actual reason for judder is from round-up aliasing on the left side of i/w+f^f, so pre-flooring f seems to mostly eliminate it e.g 999*S(t*.05)|0


      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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