d/22648 by taupelink

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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taupelink

remix of d/22646 by u/taupelink

function u(t) {

b=120;x.globalCompositeOperation='hue';for(i=b;i--;x.fillRect(X=e*e%2e3,X*X%1e3,w=7e6/e/e>>t,w))x.fillStyle=R(e=997*t*i%b+9,e**.97,e*.8)

Apr 27 2021 5:53 PM UTC

}// 136/140

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d/22648

u/taupelink

FYI: This dweet looks different to me, depending on whether I'm viewing it on iOS/Safari or on Chromebook/Chrome. On iOS, there's more detail even in the dark areas. I'm guessing it reflects a difference in how the 'hue' is implemented, but I dunno.
u/sigveseb

Awesome! Love dweets that expose browser implementation differences like this. Looks cool too :)


      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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