public void draw(float depth) {
//		g.drawRect(x, y, x1 - x, y1 - y);
		
		/*
		 * Draw shape
		 */
		GL11.glColor3f(1f, 1f, 1f);
		
		GL11.glBegin(GL11.GL_LINE_LOOP);
		GL11.glVertex3f(x, y, depth);
		GL11.glVertex3f(x1, y, depth);
		GL11.glVertex3f(x1, y1, depth);
		GL11.glVertex3f(x, y1, depth);
		GL11.glEnd();
		
		if (!leaf) {
			for (Rtree tree : subTrees) {
				tree.draw(depth);
			}
		}
	}