My first dweet! Tips for working in jav… by Piggo

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

Piggo

function u(t) {

x.fillStyle=`hsl(${t*150},95%,45%)`;var Z=Math.abs(T(t/3))
for(var X=90;X-=1;)for(var Y=90;Y-=1;)x.fillRect(X*10*Z-50,Z*Y*10-50,9,9)

Dec 19 2019 3:18 AM UTC

}// 132/140

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

My first dweet! Tips for working in javascript would be appreciated since I've never used it before

u/jellyedwards

Hey Piggo, to reduce a few chars you don't need var, you can do -- instead of -=1 and you can put some statements in the last term of the from expression, have a look at this that does the same in 116 bytes: Z=Math.abs(T(t/3));for(X=90;X--;)for(Y=90;Y--;x.fillRect(X*10*Z-50,Z*Y*10-50,9,9))x.fillStyle=hsl(${t*150},95%,45%
u/jellyedwards

Hmm the back quotes for removed from the hsl but you get the idea!
u/Piggo

Awesome, thanks for the tips!


      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