d/10328 by magna

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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magna

remix of d/10320 by u/veubeke

function u(t) {

c.width^=0
for(i=190;i--;x.fillRect(-90,-30,180,60))x.setTransform(k=C(a=(S(t)/2+i%2*.5)*Math.PI),z=S(a),-z,k,120*(i/11|0),i%11*120)

Oct 12 2018 4:54 AM UTC

}// 132/140

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u/yonatan

124 with some constant-folding and pi approximation: c.width^=0;for(i=190;i--;x.fillRect(-90,-30,180,60))x.setTransform(k=C(a=(S(t)+i%2)*1.57),z=S(a),-z,k,120*(i/11|0),i%11*120)


      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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