przykłady JGraphT

Question

chciałbym wykreślenia linii prostej x,y na wykresie, aby wyświetlić w JApplet pomocą JGraphT. Przykłady, które znalazłem, nie były zbyt pomocne. Czy ktoś mógłby wskazać mi kilka prostych przykładów?

Answer 1

tutaj przykładem Mam nadzieję, że pomoże jgrapht

Answer 2

package simple; 

import java.awt.*; 
import java.awt.geom.*; 


import javax.swing.*; 


import org.jgraph.JGraph; 
import org.jgraph.graph.AttributeMap; 
import org.jgraph.graph.DefaultGraphCell; 
import org.jgraph.graph.GraphConstants; 
import org.jgrapht.*; 
import org.jgrapht.ext.*; 
import org.jgrapht.graph.*; 

// resolve ambiguity 
import org.jgrapht.graph.DefaultEdge; 

import com.compilervision.common.CFNode; 
import com.compilervision.common.llvmir.instructions.CFG; 
import com.compilervision.common.Edge; 

/** 
* A demo applet that shows how to use JGraph to visualize JGraphT graphs. 
* 
* @author Barak Naveh 
* @since Aug 3, 2003 
*/ 
public class Test 
    extends JApplet 
{ 
    //~ Static fields/initializers --------------------------------------------- 

    private static final long serialVersionUID = 3256444702936019250L; 
    private static final Color DEFAULT_BG_COLOR = Color.decode("#FAFBFF"); 
    private static final Dimension DEFAULT_SIZE = new Dimension(530, 320); 

    //~ Instance fields -------------------------------------------------------- 

    // 
    private JGraphModelAdapter<CFNode, Edge> jgAdapter; 

    //~ Methods ---------------------------------------------------------------- 

    /** 
    * 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) 
    { 
     Test applet = new Test(); 
     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 graphq 
     ListenableGraph<CFNode, Edge> g = 
      new ListenableDirectedMultigraph<CFNode, Edge>(
        Edge.class); 

     // create a visualization using JGraph, via an adapter 
     jgAdapter = new JGraphModelAdapter<CFNode,Edge>(g); 

     JGraph jgraph = new JGraph(jgAdapter); 

     adjustDisplaySettings(jgraph); 
     getContentPane().add(jgraph); 
     resize(DEFAULT_SIZE); 

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

     // add some sample data (graph manipulated via JGraphT) 
     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); 

     // position vertices nicely within JGraph component 
     //GraphSimpleLayout() 
     positionVertexAt(v1, 130, 140); 
     positionVertexAt(v2, 60, 200); 
     positionVertexAt(v3, 310, 230); 
     positionVertexAt(v4, 380, 70); 

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

    private void adjustDisplaySettings(JGraph jg) 
    { 
     jg.setPreferredSize(DEFAULT_SIZE); 

     Color c = DEFAULT_BG_COLOR; 
     String colorStr = null; 

     try { 
      colorStr = getParameter("bgcolor"); 
     } catch (Exception e) { 
     } 

     if (colorStr != null) { 
      c = Color.decode(colorStr); 
     } 

     jg.setBackground(c); 
    } 

    @SuppressWarnings("unchecked") // FIXME hb 28-nov-05: See FIXME below 
    private void positionVertexAt(Object vertex, int x, int y) 
    { 
     DefaultGraphCell cell = jgAdapter.getVertexCell(vertex); 
     AttributeMap attr = cell.getAttributes(); 
     Rectangle2D bounds = GraphConstants.getBounds(attr); 

     Rectangle2D newBounds = new Rectangle2D.Double(x,y,bounds.getWidth(),bounds.getHeight()); 

     GraphConstants.setBounds(attr, newBounds); 

     // TODO: Clean up generics once JGraph goes generic 
     org.jgraph.graph.AttributeMap cellAttr = new AttributeMap(); 
     cellAttr.put(cell, attr); 
     jgAdapter.edit(cellAttr, null, null, null); 
    } 

    //~ Inner Classes ---------------------------------------------------------- 

    /** 
    * a listenable directed multigraph that allows loops and parallel edges. 
    */ 
    private static class ListenableDirectedMultigraph<V, E> 
     extends DefaultListenableGraph<V, E> 
     implements DirectedGraph<V, E> 
    { 
     private static final long serialVersionUID = 1L; 

     ListenableDirectedMultigraph(Class<E> edgeClass) 
     { 
      super(new DirectedMultigraph<V, E>(edgeClass)); 
     } 
    } 
} 

// End JGraphAdapterDemo.java