Soft spiral happy accident 2 by joeytwiddle

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 2 remixes fullscreen

joeytwiddle

remix of d/8413 by u/joeytwiddle

function u(t) {

for(c.width|=0,i=4e3;i--;x.beginPath())x.globalAlpha=.03,x.arc(S(t*6+i*i/99e2)*i*i/1e4+960,C(t*6+i*i/99e2)*i*i/1e4+540,i/30+2,0,7),x.fill()

Jun 5 2018 9:46 AM UTC

}// 139/140

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

Soft spiral happy accident 2

u/joeytwiddle

Moody and cloudy: x.arc(S(t*6+i*i/99e2)*i/4+960,C(t*6+i*i/99e2)*i/4+540,i/30+2,0,7),x.fill()
u/joeytwiddle

Eye of the storm: t=9+t/5e2;for(c.width|=0,i=4e3;i--;x.beginPath())x.globalAlpha=.03,x.arc(S(i*i/1e4*t)*i/4+960,C(i*i/1e4*t)*i/4+540,i/30+2,0,7),x.fill()


      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