Saved another fast 28 chars like a pro … by Xen

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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.

show FPS hide FPS share fullscreen

Xen

remix of d/29066 by u/zachygreen

function u(t) {

s=40
N=1920/s
i=t*3333/s|0
Y=i/N|0
X=i-Y*N
x.fillStyle=R((X*23-Y*11)%256)
x.fillRect(X*s,Y*s,30,30)

Dec 5 2023 9:03 PM UTC

}// 99/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Saved another fast 28 chars like a pro B)

u/danny@hille.dk

if you pre calculate 85b => i=t*83|0,Y=i/48|0,X=i-Y*48,x.fillStyle=R((X*23-Y*11)%256),x.fillRect(X*40,Y*40,30,30)
u/danny@hille.dk

ok I cheated a bit: 3333/40 = 83.325 note 83 :-)


      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)

dwitter.net