Saved 22 characters on my palette with … by f8f82804

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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f8f82804

remix of d/9532 by u/f8f82804

function u(t) {

p=a=>127+S(a)*127;with(x)f=a=>fillStyle=R(p(a),p(a+21),p(a-21)),f(t),fillRect(0,0,v=2e3,v),f(t+22),fillRect(960,0,v,v)

Aug 30 2018 6:31 PM UTC

}// 118/140

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Saved 22 characters on my palette with a little golf and some integer approximations for multiples of π. Let me know if you'd like to see the spreadsheet that lays out different approximations and their accuracy.


      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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