slight golf for more options... i'd try… by Xen

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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Xen

remix of d/17504 by u/bandaloo

function u(t) {

t?x.fillStyle=R(!x.fillText(t,~~t*99%d-99,t*d%d),d):x.fillRect(0,0,d=2e3,d)

Feb 7 2020 7:31 PM UTC

}// 75/140

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slight golf for more options... i'd try c.width=d=500 instead ;-)

u/bandaloo

nice! i was gonna go back and golf this some more but you nailed it. learned some stuff from this
u/bandaloo

the ternary with time is too cool. calling fillRect in R is neat. if you get rid of the ! it looks almost the same, too


      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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