Centered and shortened :) by BirdsTweetCodersDweet

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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BirdsTweetCodersDweet

remix of d/10401 by u/rbong

function u(t) {

Y=c.height^=0
p=m=>S(Y+t+90*m)*250+250
while(Y-=40){for(i=4;i--;)a=p(i),b=p(i+1%4),x.fillStyle=R(a,b,50),a<b&&x.fillRect(a+735,Y,b-a,40)}

Oct 14 2018 4:47 PM UTC

}// 137/140

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Centered and shortened :)

u/BirdsTweetCodersDweet

(i.e. golfed)


      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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