我有一张我画的画。我画的形状是存储在列表中的一些对象。我想在这些画出来的物体上注册鼠标。我现在正在做的是添加一个mousemotionlistener，它在每次鼠标移动时检查对象列表中是否有点击。这当然是相当低效一旦有很多对象。有没有比每次鼠标移动时都检查所有对象更好的方法来检查鼠标移动？
下面是一个简单的例子：
类ui.java：

public class Ui {
    private static JFrame frame;
    private static DrawPanel drawPanel;

    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> { createGui();
        });
    }
    private static void createGui() {
        frame = new JFrame("Test");
        drawPanel = new DrawPanel();
        frame.setContentPane(drawPanel);
        frame.pack();
        frame.setVisible(true);
        frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
    }
}

类someobject.java：

public class SomeObject {
    //class that represents some object that will be drawn. note that this is 
    //just a minmal example and that in my actual application, there are      
    //other aspects and functions to this class that have nothing to do with drawing. 
    //This is just kept small for the sake being a minimal example
    private String id;
    private Point2D origin;
    private int length;
    private int height;

    public SomeObject(String id, Point2D origin, int length, int height) {
        this.id = id;
        this.origin = origin;
        this.length = length;
        this.height = height;
    }

    public String getId() {
        return id;
    }

    public Point2D getOrigin() {
        return origin;
    }

    public int getLength() {
        return length;
    }

    public int getHeight() {
        return height;
    }
}

custommousemotionlistener.java类：

public class CustomMouseMotionListener implements java.awt.event.MouseMotionListener {
    public CustomMouseMotionListener() { }

    @Override
    public void mouseDragged(MouseEvent e) {

    }

    @Override
    public void mouseMoved(MouseEvent e) {
        for (SomeObject object: DrawPanel.objectsToDraw) {
            Shape s = new Rectangle((int)object.getOrigin().getX(), (int)object.getOrigin().getY(), object.getLength(), object.getHeight());
            if (s.contains(e.getPoint())) {
                System.out.println("hit: " + object.getId());
            }
        }
    }
}

类drawpanel.java：

public class DrawPanel extends JPanel {
    public static List<SomeObject> objectsToDraw = new ArrayList<>();
    public DrawPanel() {
        objectsToDraw.add( new SomeObject("a", new Point2D.Float(20,1), 20,20));
        objectsToDraw.add( new SomeObject("b", new Point2D.Float(20,45), 20,20));

        addMouseMotionListener(new CustomMouseMotionListener());
        setFocusable(true);
        setVisible(true);
        grabFocus();
    }

    protected void paintComponent(Graphics g) {
        Graphics2D g2D = (Graphics2D) g;
        super.paintComponent(g2D);
        for (SomeObject object: objectsToDraw) {
            g.drawRect((int)object.getOrigin().getX(), (int)object.getOrigin().getY(), object.getLength(), object.getHeight());

        }
    }
}