如何创建圆形顶点和无向边？

Question

我正在使用库JGraphT和JGraphX。我需要生成圆形图，但现在我有矩形图。我目前有这些graphs。

除此之外，我想知道如何自定义颜色，尺寸等。不幸的是，我不理解图书馆的文档。

这是我的代码：

package graphs;
import com.mxgraph.layout.*;
import com.mxgraph.swing.*;
import org.jgrapht.*;
import org.jgrapht.ext.*;
import org.jgrapht.graph.*;

import javax.swing.*;
import java.awt.*;


public class Dibujar extends JApplet {

    private static final long serialVersionUID = 1;

    private static final Dimension DEFAULT_SIZE = new Dimension(1000, 820);

    private JGraphXAdapter<String, DefaultEdge> jgxAdapter;



    public static void main(String[] args)
    {
        Dibujar applet = new Dibujar();
        applet.init();

        JFrame frame = new JFrame();
        frame.getContentPane().add(applet);
        frame.setTitle("JGraphT Adapter to JGraphX Demo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.pack();
        frame.setVisible(true);
    }

    @Override
    public void init()
    {
        // create a JGraphT graph
            ListenableGraph<String, DefaultEdge> g =
            new DefaultListenableGraph<>(new DefaultDirectedGraph<>(DefaultEdge.class));
        // create a visualization using JGraph, via an adapter
        jgxAdapter = new JGraphXAdapter<>(g);

        setPreferredSize(DEFAULT_SIZE);
        mxGraphComponent component = new mxGraphComponent(jgxAdapter);

        component.setConnectable(false);
        component.getGraph().setAllowDanglingEdges(false);

        getContentPane().add(component);
        resize(DEFAULT_SIZE);

        String v1 = "v1";
        String v2 = "v2";
        String v3 = "v3";
        String v4 = "v4";
        String v5 = "v5";
        String v6 = "v6";
        String v7 = "v7";
        String v8 = "v8";

        // add some sample data (graph manipulated via JGraphX)
        g.addVertex(v1);
        g.addVertex(v2);
        g.addVertex(v3);
        g.addVertex(v4);
        g.addVertex(v5);
        g.addVertex(v6);
        g.addVertex(v7);
        g.addVertex(v8);

        Object a = g.addEdge(v1, v2);
        g.addEdge(v2, v3);
        g.addEdge(v3, v1);
        g.addEdge(v4, v3);
        g.addEdge(v4, v4);
        g.addEdge(v3, v8);
        g.addEdge(v2, v2);

        // positioning via jgraphx layouts
        mxCircleLayout layout = new mxCircleLayout(jgxAdapter);



        // center the circle
        int radius = 250;
        layout.setX0((DEFAULT_SIZE.width / 2.0) - radius);
        layout.setY0((DEFAULT_SIZE.height / 2.0) - radius);
        layout.setRadius(radius);
        layout.setMoveCircle(true);

        layout.execute(jgxAdapter.getDefaultParent());
        // that's all there is to it!...
    }
}