public void printTrees(QuadTree tree)
	{
		// Include parent tree
		// System.out.println(tree);  
		// for (Point2D p : tree.getEdges()) {
		//   System.out.println(p.getX() + ", " + p.getY());
		//}
		// Child trees
		for (QuadTree t : tree)
		{
			System.out.println(t);
			//for (Point2D p : t.getEdges()) {
			//System.out.println(p.getX() + ", " + p.getY());
			//}
			t.printTrees(t);
		}
	}