java - JGraphX 中的无向图

Question

我尝试在 JGraphx 中显示图表。只要我使用有向图，一切都很好，但是当我尝试显示一个无向的时，它显示了有方向。

代码来自jgrapht的demo。

package org.jgrapht.demo;

import com.mxgraph.layout.*;
import com.mxgraph.swing.*;

import java.awt.*;
import java.nio.file.FileSystem;

import javax.swing.*;

import org.jgrapht.*;
import org.jgrapht.ext.*;
import org.jgrapht.graph.*;


/**
 * A demo applet that shows how to use JGraphX to visualize JGraphT graphs.
 * Applet based on JGraphAdapterDemo.
 *
 * @since July 9, 2013
 */
public class JGraphXAdapterDemo
    extends JApplet
{


private static final long serialVersionUID = 2202072534703043194L;
private static final Dimension DEFAULT_SIZE = new Dimension(530, 320);



private JGraphXAdapter<String, DefaultEdge> jgxAdapter;



/**
 * An alternative starting point for this demo, to also allow running this
 * applet as an application.
 *
 * @param args ignored.
 */
public static void main(String [] args)
{
    JGraphAdapterDemo applet = new JGraphAdapterDemo();
    applet.init();

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

/**
 * {@inheritDoc}
 */
public void init()
{
    // create a JGraphT graph
    ListenableUndirectedGraph<String, DefaultEdge> g =
        new ListenableUndirectedGraph<String, DefaultEdge>(
            DefaultEdge.class);

    // create a visualization using JGraph, via an adapter
    jgxAdapter = new JGraphXAdapter<String, DefaultEdge>(g);

    getContentPane().add(new mxGraphComponent(jgxAdapter));
    resize(DEFAULT_SIZE);

    String v1 = "v1";
    String v2 = "v2";
    String v3 = "v3";
    String v4 = "v4";

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

    g.addEdge(v1, v2);
    g.addEdge(v2, v3);
    g.addEdge(v3, v1);
    g.addEdge(v4, v3);

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

    // that's all there is to it!...

   }
}

是否可以无向显示？

谢谢

托尔本

PS:抱歉我的英语不好

Answer 1

您可以将mxGraphComponent中的边缘样式设置为NONE:

mxGraphComponent graphComponent = new mxGraphComponent(jgxAdapter);
mxGraphModel graphModel  = (mxGraphModel)graphComponent.getGraph().getModel(); 
Collection<Object> cells =  graphModel.getCells().values(); 
mxUtils.setCellStyles(graphComponent.getGraph().getModel(), 
    cells.toArray(), mxConstants.STYLE_ENDARROW, mxConstants.NONE);
//instead of getContentPane().add(new mxGraphComponent(jgxAdapter));
getContentPane().add(graphComponent);