import com.sun.hotspot.igv.hierarchicallayout.HierarchicalLayoutManager; //导入依赖的package包/类
protected void performGraphLayout(UniversalGraph<N, E> graph) {

        Set<LinkWrapper> links = new LinkedHashSet<LinkWrapper>();
        Set<VertexWrapper> vertices = new LinkedHashSet<VertexWrapper>();
        Map<N, VertexWrapper> vertexMap = new HashMap<N, VertexWrapper>();

        for (N node : graph.getNodes()) {
            VertexWrapper v = new VertexWrapper(node, graph);
            vertexMap.put(node, v);
            vertices.add(v);
        }

        for (E edge : graph.getEdges()) {
            N source = graph.getEdgeSource(edge);
            N target = graph.getEdgeTarget(edge);
            LinkWrapper l = new LinkWrapper(vertexMap.get(source), vertexMap.get(target));
            links.add(l);
        }

        HierarchicalLayoutManager m = new HierarchicalLayoutManager(HierarchicalLayoutManager.Combine.NONE);

        LayoutGraph layoutGraph = new LayoutGraph(links, vertices);
        m.doLayout(layoutGraph);
    }
 

import com.sun.hotspot.igv.hierarchicallayout.HierarchicalLayoutManager; //导入依赖的package包/类
protected void performGraphLayout(UniversalGraph<N, E> graph) {

        Set<LinkWrapper> links = new HashSet<LinkWrapper>();
        Set<VertexWrapper> vertices = new HashSet<VertexWrapper>();
        Map<N, VertexWrapper> vertexMap = new HashMap<N, VertexWrapper>();

        for (N node : graph.getNodes()) {
            VertexWrapper v = new VertexWrapper(node, graph);
            vertexMap.put(node, v);
            vertices.add(v);
        }

        for (E edge : graph.getEdges()) {
            N source = graph.getEdgeSource(edge);
            N target = graph.getEdgeTarget(edge);
            LinkWrapper l = new LinkWrapper(vertexMap.get(source), vertexMap.get(target));
            links.add(l);
        }

        HierarchicalLayoutManager m = new HierarchicalLayoutManager(HierarchicalLayoutManager.Combine.NONE);

        LayoutGraph layoutGraph = new LayoutGraph(links, vertices);
        m.doLayout(layoutGraph);
    }
 

import com.sun.hotspot.igv.hierarchicallayout.HierarchicalLayoutManager; //导入依赖的package包/类
private void relayout(Set<Widget> oldVisibleWidgets) {
    System.out.println("relayout called with old visible widgets: " + oldVisibleWidgets);

    Diagram diagram = getModel().getDiagramToView();

    HashSet<Figure> figures = new HashSet<>();

    for (Figure f : diagram.getFigures()) {
        FigureWidget w = getWidget(f);
        if (w.isVisible()) {
            figures.add(f);
        }
    }

    HashSet<Connection> edges = new HashSet<>();

    for (Connection c : diagram.getConnections()) {
        if (isVisible(c)) {
            edges.add(c);
        }
    }

    HierarchicalLayoutManager manager = new HierarchicalLayoutManager(HierarchicalLayoutManager.Combine.SAME_OUTPUTS);
    manager.setMaxLayerLength(10);
    manager.doLayout(new LayoutGraph(edges, figures));
    relayoutWithoutLayout(oldVisibleWidgets);
}