Java Graphics2D旋转绘画

Question

我有一个分为多个扇区的面板。我已经附加了一个MouseListener。每个拖动事件都会生成一个点，将其添加到ArrayList并调用重绘。拖动鼠标时，通过循环播放ArrayList并调用Graphics2D旋转方法，在每个扇区中绘制鼠标模式。如果我慢慢拖动鼠标，我可以看到屏幕上逐渐绘制的点。我该如何解决这个问题？

//performs the drawing on the display panel
public void paintComponent(Graphics g)
{
    super.paintComponent(g);


    Graphics2D g2d = (Graphics2D) g;    
    g2d.setColor(penColor);

    this.sectorLine = new Line2D.Double(getCenterX(), getCenterY(), getCenterX(), 0);
    g2d.setClip( new Ellipse2D.Double(getCenterX() - getLineLength(), getCenterY() - getLineLength(), getLineLength()*2, getLineLength()*2));


    //draws the sectors on the screen
    if(drawSectors)
    {   
        drawSectorLines(g2d);
    }   


    for (Point point : points)
    {   
        g2d.fillOval((int) point.getX() -4 , (int) point.getY() -4,8, 8);       // has to return the size of the pen /2 methog get offset
                                                                                // dva metoda za sektori i rotate
        rotate(g2d,getNumberOfSectors() - 1);


    }   


}

//rotates each drawn point in every sector
public void rotate(Graphics2D g2d, int times)
{
    g2d.setColor(penColor);

    for(int i=0; i<times; i++)
    {                             // returns 360/number of sectors
        g2d.rotate(Math.toRadians(getRotationDegrees()), getWidth()/2, getHeight()/2);
    }
}


// handles drawing
private class DisplayListener extends MouseAdapter
{   
    private void addPoint(MouseEvent event) 
    {
        Point point = event.getPoint();
        points.add(point);
        repaint();
    }

    public void mouseClicked(MouseEvent event)
    {
        addPoint(event);

    }

    public void mouseDragged(MouseEvent event)
    {
        addPoint(event);
    }

}