天の川 (the milky way) for 七夕 (the star fe… by jpthinker

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 1 remix fullscreen

jpthinker

function u(t) {

for(i=2e3;i--;)
t?X=i:X=0,
t?Y=X/1.8+S(i*i)*C(i)*500:Y=0,
x.fillStyle=R(t?r=S(i/2)*230:r=0,r-C(i)*50,t?99:30),
x.fillRect(X,Y,t?u=9:u=2e3,u)

Jul 7 2024 1:42 PM UTC

}// 140/140

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

天の川 (the milky way) for 七夕 (the star festival)

u/rodrigo.siqueira

Change S(i/2) to S(i/2+t) and the stars will blink, shine and fade
u/jpthinker

Thank you u/rodrigo.siqueira ! I take this as a warm welcome since this was my first dweet! And that's exactly what I was trying to do, before I ran out of steam and fell asleep, lol. I remixed this one with your suggestion and figured out a few spots to golf down the extra characters


      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