public void mouseDragged(MouseEvent event) {
		if (event.getModifiers() == event.BUTTON1_MASK || event.isControlDown()
				|| event.isShiftDown()) {
			if (controller.isPassibleDragged()
					&& controller.isObject(event.getPoint())) {
				controller.setDragged(true);
			}
			if (controller.isDragged()) {
				controller.shiftObjects(controller.getCurrentGraph().getSelectionVertexes(), event.getPoint());
			}
			controller.repaint();
		}
	}