moire pattern = (i*j%w)*t%w original s… by IV

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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remix of d/676 by u/mxfh

function u(t) {

d=x.getImageData(0,0,w=c.width=256,h=c.height=128)
for(i=0;i<h;i++)for(j=0;j<w;j++)d.data[(i*w+j)*4+3]=(i*j%w)*t%w
x.putImageData(d,0,0)

Jul 22 2020 5:33 PM UTC

}// 137/140

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moire pattern = (i*j%w)*t%w original sierpinskies = (i-j&j+i)*t%w


      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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