d/9905 by conorpo

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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conorpo

function u(t) {

c.width=1920
for(i=0;i<100;i++)
x.arc(S(t+i/5)*100+500,C(t-i/10)*100+500,20,0+i,i);
x.fill();

Sep 18 2018 12:57 AM UTC

}// 93/140

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u/zanella

Code golfed 1 character and made the drawing bigger: `
u/zanella

c.width=960 for(i=0;i<100;i++) x.arc(S(t+i/5)*100+500,C(t-i/10)*100+250,20,0+i,i); x.fill();
u/donbright

fascinating


      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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