d/7394 by jkjustjoshing

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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jkjustjoshing

remix of d/7270 by u/New_Core

function u(t) {

i=1920;
j=Math.abs
for(;i--;)x.fillStyle=R(255,(t*600-i/3)%999,255),x.fillRect(i,500+100*j(T(i/599))*S(j(i/90)),1,40)

Mar 21 2018 1:07 AM UTC

}// 117/140

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Show more comments…
u/AnielaMW

x.fillStyle=R((t*600-i*2)%999,255,255),
u/AnielaMW

x.fillStyle=R((t*600-i/9)%999,255,255),
u/AnielaMW

Here is green, but no black background...
u/AnielaMW

x.fillStyle=R((t*600-i/9)%999,255,(t*600-i/9)%999),
u/AnielaMW

i=1920;j=Math.abs;for(;i--;)a=(t*600-i/9)%999,x.fillStyle=R(a,255,a), x.fillRect(i,500+100*j(T(i/599))*S(j(i/90)),1,40)
u/AnielaMW

still trying to get the black background
u/joeytwiddle

This is wrong but perhaps you can fix it: i=1920;j=Math.abs;for(;i--;)a=(t*600-i/9|0)%999,x.fillStyle=R(0,a,0),x.fillRect(i,a?500+100*j(T(i/599))*S(j(i/90)):0,1,a?40:999)


      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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