Thanks to everyone, and perhaps especia… by Woodmouth

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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Woodmouth

remix of d/2471 by u/Woodmouth

function u(t) {

t?x.fillRect(a=(1920+a+9*S(d))%1920,b=(1080+b+9*C(d))%1080,9,9):(b=a=99,d=0),d+=Math.random()-.5
x.fillStyle=`hsl(${t*99},99%,50%`

Apr 12 2017 9:27 AM UTC

}// 130/140

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Thanks to everyone, and perhaps especially donbright, we have enough space for colors! (I just copied the fillStyle from cantelope's #2451 )

u/Woodmouth

t?x.fillRect(a+=9*S(d),b+=9*C(d),9,9):(b=a=99,d=0);d+=Math.random()-.5;d=b>1080?3:(b<0?0:(a>1920?5:(a<0?2:d)));x.fillStyle=hsl(${t*99},99%,50%
u/Woodmouth

4 characters away from colors and boarder btw
u/donbright

@joeytwiddle was correct, you can take the parenthesis out of my ? statements which should leave enough room


      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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