void setup()
{
  size(600, 600);
  smooth();
  frameRate(30);
  background(0);
  strokeWeight(2);
  colorMode(HSB);
}

void draw()
{
  noStroke();
  fill(0, 5);
  rect(0, 0, width, height);
  noFill();
  stroke((frameCount * 0.3) % 255, 255, 255, 30);
  
  strokeWeight(3 + sin(radians(frameCount)));
  translate(width / 2, height / 2);
  rotate(radians(frameCount) * sin(frameCount * 0.01));
  beginShape();
  float n = noise(frameCount * 0.01) * 200.0;
  for (int i = 0; i < 360; i++)
  {
    int x = (int) (sin(radians(i * 2)) * (5.0 - 10.0 * sin(radians(frameCount * 0.1))) * cos(radians(i + frameCount + n)) * 100.0);
    int y = (int) (cos(radians(i * 2)) * (6.0 - 12.0 * sin(radians(frameCount * 0.23))) * sin(radians(i + frameCount + n)) * 100.0);
    
    curveVertex(x, y);
  }
  endShape();
}