createCanvas(400, 400);

  background(220)

}

​

function draw() {

  k = random()

  h = random() + random() 

  if(h > 1) h = h - 2

  t = k*(k-2)/(k*k-1)

  x = h * (1-t*t)/(1+t*t)

  y = h * 2*t/(1+t*t)

  point(width/2 + 180*x, height/2 + 180*y)

  if(frameCount > 50000) noLoop()

}