d/245 by greentec

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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greentec

function u(t) {

a=255;for(i=0;i<1920;i+=5)for(j=0;j<1080;j+=5)r=(a*C(.0174*i))%255,g=(a*S(.0174*j))%255,b=(r*g)%255,x.fillStyle=R(r,g,b),x.fillRect(i,j,5,5)

Jul 20 2016 11:49 AM UTC

}// 140/140

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u/iverjo

Here's a version that draws only once: if(!t){a=255;for(i=0;i<1920;i+=5)for(j=0;j<1080;j+=5)x.fillStyle=R(r=(a*C(.0174*i))%a,g=(a*S(.0174*j))%a,r*g%a),x.fillRect(i,j,5,5)}
u/greentec

Oh, Thanks! It was very helpful.


      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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