如何在JUNG中获得顶点坐标?

| 在Jung中使用EditingModalGraphMouse时,有没有一种方法可以获取顶点坐标? 我已经使用坐标设置器和吸气剂为顶点创建了一个类,但是我不知道如何使用其特定坐标设置顶点? (我有一个变压器:变压器)     
已邀请:
以下内容为您提供了有关如何在Jung VisualizationViewer实例上获取笛卡尔坐标的想法... 创建一个内部类,如下所示:
protected class MyGraphMousePlugin extends TranslatingGraphMousePlugin implements MouseListener {

    @Override
    public void mouseMoved(MouseEvent e) {
        final VisualizationViewer<GeoLocationData.Station,GeoLocationData.Link> vv =
        (VisualizationViewer<GeoLocationData.Station,GeoLocationData.Link>)e.getSource();
        Point2D p = e.getPoint();//vv.getRenderContext().getBasicTransformer().inverseViewTransform(e.getPoint());
        GraphElementAccessor<GeoLocationData.Station,GeoLocationData.Link> pickSupport = vv.getPickSupport();
        if(pickSupport != null) {               
            vv.setToolTipText (\"<html>x: \"+p.getX()+\"<br>y: \"+p.getY());
        }
    }

    public MyGraphMousePlugin(int modifiers) {
        super(modifiers);
        // TODO Auto-generated constructor stub
    }

    public MyGraphMousePlugin() {
        super();
    }
}
将插件添加到您的GraphMouse实例:
graphMouse = new DefaultModalGraphMouse<Object, Object>();
vv.setGraphMouse(graphMouse);
vv.addKeyListener(graphMouse.getModeKeyListener());
graphMouse.add(new MyGraphMousePlugin());
编辑: 接下来的修改将为您提供笛卡尔坐标,其中考虑了在Jung图布局上进行的平移:
protected class MyGraphMousePlugin extends TranslatingGraphMousePlugin implements MouseListener {

    @Override
    public void mouseMoved(final MouseEvent e) {

        SwingUtilities.invokeLater(
                new Runnable() {
                    public void run() {
                        final VisualizationViewer<GeoLocationData.Station,GeoLocationData.Link> vv =
                            (VisualizationViewer<GeoLocationData.Station,GeoLocationData.Link>)e.getSource();
                        Point2D p = e.getPoint();//vv.getRenderContext().getBasicTransformer().inverseViewTransform(e.getPoint());
                        GraphElementAccessor<GeoLocationData.Station,GeoLocationData.Link> pickSupport = vv.getPickSupport();
                        if(pickSupport != null) {

                            AffineTransform lat =
                                vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.LAYOUT).getTransform();
                            //AffineTransform vat =
                            //  vv.getRenderContext().getMultiLayerTransformer().getTransformer(Layer.VIEW).getTransform();
                            //AffineTransform at = new AffineTransform();

                            double x = p.getX() - lat.getTranslateX(); //;
                            double y = p.getY() - lat.getTranslateY(); //;

                            vv.setToolTipText (\"<html>x: \"+x+\"<br>y: \"+y);
                        }

                    }
                }
        );
    }

    public MyGraphMousePlugin(int modifiers) {
        super(modifiers);
        // TODO Auto-generated constructor stub
    }

    public MyGraphMousePlugin() {
        super();
    }
}
由于它省略了比例因子,因此它仍然不是完美的,但是您会明白的。 您需要计算从屏幕坐标系到视图坐标系再到模型坐标系,以获得模型的坐标。 上面代码中的泛型类型应更改为您自己的版本:) 已编辑 哈哈,线索已经存在,这是正确的方法...无需计算! http://sourceforge.net/projects/jung/forums/forum/252062/topic/3040266?message=6522779
    @Override
    public void mouseMoved(final MouseEvent e) {

        SwingUtilities.invokeLater(
                new Runnable() {
                    public void run() {
                        final VisualizationViewer<GeoLocationData.Station,GeoLocationData.Link> vv =
                            (VisualizationViewer<GeoLocationData.Station,GeoLocationData.Link>)e.getSource();
                        Point2D p = vv.getRenderContext().getMultiLayerTransformer().inverseTransform(e.getPoint());

                        double x = p.getX();
                        double y = p.getY();

                        vv.setToolTipText (\"<html>x: \"+(int)x+\"<br>y: \"+(int)y);
                    }
                }
        );
    }
    

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