dropofwill_processing-drawing-app/draw/entity.pde
class Entity {
	public boolean render = true;
	private ArrayList<Entity> myDisplayList;

	Entity(ArrayList<Entity> displayList) {
		myDisplayList = displayList;	
		myDisplayList.add(this);
	}

	public void render() {
	}

	public void hide() {
		render = false;
	}

	public boolean shouldRender() {
		return render;
	}
}
