my TP stash ! by Odog8

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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Odog8

function u(t) {

x.font='90px"'
x.fillText('🧻',(90*60*t)%1920,~~(t*2)*90)

Mar 23 2020 2:11 PM UTC

}// 56/140

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my TP stash !

u/pavel

To get (X,Y) out of n you do (n%width,n/width|0). Here n=60*t and you got 21 TPs across so x.font='90px"';x.fillText('🧻',60*t%21*90,(60*t/21|0)*90)
u/pavel

This reveals that if we pick n=63*t we can shorten Y=63*t/21|0=3*t|0
u/Odog8

Thanks!


      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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