why does my program print the golden ra… by katkip

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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.

show FPS hide FPS share fullscreen

katkip

function u(t) {

f=(x,n=22)=>n>0?f(x/(1-x)-1,n-1):x

c.width=200
x.fillText(-f(t),50,60)

Sep 30 2020 5:44 PM UTC

}// 71/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

why does my program print the golden ratio?

u/danny@hille.dk

without recursion: for(X=i=22;t==0&&i--;)X=X/(1-X)-1;x.scale(14,14),x.fillText(-X,10,10)


      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)

dwitter.net