graphpad分析教程（jung实践-拓扑图形绘制）

最近在研究涉及到网络中的算路问题，自然会涉及到图相关的知识。经验表明好的数据结构往往比算法本身更为重要。

JUNG (Java Universal Network/Graph Framework) 是一个通用的可扩展的，用来创建图表的类库。一个用Java来建模、分析和做可视化图表的框架。官网：http://jung.sourceforge.net/site/jung-samples/source-repository.html

先看下示例绘制图形：

拓扑图绘制

使用的依赖有：

<dependency> <groupId>net.sf.jung</groupId> <artifactId>jung-graph-impl</artifactId> <version>2.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/net.sf.jung/jung-visualization --> <dependency> <groupId>net.sf.jung</groupId> <artifactId>jung-visualization</artifactId> <version>2.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/net.sf.jung/jung-algorithms --> <dependency> <groupId>net.sf.jung</groupId> <artifactId>jung-algorithms</artifactId> <version>2.1.1</version> </dependency> <!-- https://mvnrepository.com/artifact/net.sourceforge.collections/collections-generic --> <dependency> <groupId>net.sourceforge.collections</groupId> <artifactId>collections-generic</artifactId> <version>4.01</version> </dependency>

package com.demo.ui; import java.awt.*; import javax.Swing.*; import edu.uci.ics.jung.algorithms.layout.CircleLayout; import edu.uci.ics.jung.algorithms.layout.Layout; import edu.uci.ics.jung.graph.SparseGraph; import edu.uci.ics.jung.graph.util.EdgeType; import edu.uci.ics.jung.visualization.VisualizationViewer; import edu.uci.ics.jung.visualization.control.DefaultModalGraphMouse; import edu.uci.ics.jung.visualization.control.ModalGraphMouse.Mode; import edu.uci.ics.jung.visualization.decorators.ToStringLabeller; import javafx.scene.shape.StrokeType; public class SQFrame2 extends JFrame { private SparseGraph g; private void initGraph() { g = new SparseGraph(); for (int i = 1; i < 10; i ) { g.addVertex(i); g.addEdge("Edge[1," (i 1) "]", 1, i 1); if (i > 1) { g.addEdge("Edge[" i "," (i 1) "]", i, i 1, EdgeType.DIRECTED); } } System.out.println("The graph g = " g.toString()); } public SQFrame2() { this.setTitle("Example"); this.setFont(new Font("Times New Roman", Font.PLAIN, 12)); this.setBackground(Color.white);// 设置窗口背景颜色 initGraph(); //创建viewer 圆形布局结构(V,E节点和链路类型) VisualizationViewer<Integer, String> vv = new VisualizationViewer<Integer, String>(new CircleLayout(g)); // 设置顶点文本标签 vv.getRenderContext() .setVertexLabelTransformer(new ToStringLabeller()); // 设置顶点颜色 vv.getRenderContext() .setVertexFillPaintTransformer((p) -> { if (p == 1) return Color.green; else return Color.YELLOW; }); // 设置边的文本标签 vv.getRenderContext().setEdgeLabelTransformer(new ToStringLabeller()); // 设置边的线型 vv.getRenderContext().setEdgeStrokeTransformer(p->{ return new BasicStroke(5f); }); DefaultModalGraphMouse<Integer, String> gm = new DefaultModalGraphMouse<Integer, String>(); gm.setMode(Mode.PICKING); vv.setGraphMouse(gm); // 将上述对象放置在一个Swing容器中并显示之 getContentPane().add(vv); pack(); } public static void main(String[] args) { SQFrame2 myframe = new SQFrame2(); myframe.setExtendedState(JFrame.MAXIMIZED_BOTH); myframe.setVisible(true); } }