// Adapted from "Lines bw" by ro7rossetti
// https://openprocessing.org/sketch/923148

float radius = 5;

void setup() {
  fullScreen();
  background(0);
  noFill();
  stroke(255);
  noCursor();
}

void draw() {
  translate(width/2, height/2);
  beginShape();
  for (int deg = 0; deg <= 360; deg+=1) {
    float angle = radians(deg);
    float x = cos(angle);
    float y = sin(angle);
    float n = noise(angle, frameCount*0.005); 
    //float n = noise(x, y, frameCount*0.01); // noise(a) = noise(-a);
    //float n = noise(x+frameCount*0.005, y+frameCount*0.005);
    x *= n*radius;
    y *= n*radius;
    vertex(x, y);
  }
  endShape();
  radius+=5;
  if (radius>width*2) {
    radius = 5;
    background(0);
  }
}