d/6344 by Knifa

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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Knifa

remix of d/6343 by u/Knifa

function u(t) {

c.style.background='black'
for(i=0;i<192;i++)for(j=0;j<32;j++){q=i-96;r=j-16
x.fillStyle=R(S(t*q*r/10)*255)
x.fillRect(i*8+200,j*8+360,8,8)}

Jan 22 2018 4:51 PM UTC

}// 140/140

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u/41407

Cool! Change first line to c.style.background=R(0) to get it done in 137 chars :)
u/Knifa

cheers! didn't think of that :D
u/zanella

You can reduce to 136 actually! c.style.background=R()


      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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