fractal_Mathober

function setup() {
  createCanvas(600, 600);
  angleMode(DEGREES);
}

function draw() {
  fill(255,255,250,70)
  background(0);
  translate(width/2,width/2);
  r = 45; 
  d = width;
  s = r*frameCount/10000
  rotate (s)
  for (let i = 0;i<20;i++){
    iteration(d,r)
    d = d*0.705;
    r = (r+45)+s*i*45/2;
  }
}

function iteration(d,r){
  push()
    rotate(r)
    arc(0, 0, d, d, 180, -270)
    line(-d/2,0,0,-d/2)
    line(0,-d/2,d/2,0)
    line(d/2,0,0,d/2)
  pop()
}