d/4217 by koloskus

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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koloskus

remix of d/4203 by u/koloskus

function u(t) {

p=300;y=t%255;
x.strokeStyle=R(y+190,y+170,y+150)
x.strokeRect(960+S(t)*p,540+C(t)*p,20,20);
x.drawImage(c,-1,-1,1922,1082)

Dec 27 2017 11:53 PM UTC

}// 123/140

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u/Xen

nice, try: p=y=t*t*t%255; and play with your strokeStyle ;-)
u/Xen

something like: x.strokeStyle=R(y,y/2,y%t) slow to start but nice effect.
u/koloskus

ooh thats pretty slick, thanks for the suggestion!


      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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