docs: @Override
  	@Pure
  	protected Rectangle2d calcBounds() {
  		double x = this.getX();
  		double y = this.getY();
  
  		final double w = this.radius * 2;
  		final double h = w;
  
  		x -= w / 2.;
  		y -= h / 2.;
  
  		return new Rectangle2d(x, y, w, h);
  	}