it looks like if you keep an accumulato… by BriSeven

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

BriSeven

remix of d/564 by u/BriSeven

function u(t) {

if(!t)d=X=Y=a=255.88;for(i=d|0;--i;)x.fillStyle=R(S(a)*d,C(a+t)*d,S(-a)*d,.1),x.fillRect(X=9*S(a)+X&(d*8),Y=9*C(a)+Y&(d*4),8,8),a+=C(t*i*a)

Dec 30 2016 9:51 PM UTC

}// 139/140

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

it looks like if you keep an accumulator variable in a feedback loop, you can get C to produce more random looking results. (except for at the very start.)

u/BriSeven

a+=C(t*i*a)
u/iverjo

Nice. Related dweet: https://www.dwitter.net/d/291


      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