Replace random array with audio data an… by Idicious

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

Idicious

function u(t) {

c.width=1920
w=c.width
h=c.height/2
r=Array.from({length:w},Math.random)
for(i=0;i<w;i++)x.fillRect(i,h-r[i]*h,1,r[i]*h*2)

May 3 2018 7:06 AM UTC

}// 122/140

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

Replace random array with audio data and you have a basic oscilloscope :-)

u/BalintCsala

c.height is always 1080
u/zanella

Replace Math.random with (a,b)=>S(b/t), the result is pretty cool. :)


      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