我正在使用 JUNG 创建和可视化一些图表。似乎节点的中心是由布局算法给定的坐标。因此,当一个节点位于窗格的边缘时,该节点的一些将被切断(可能还有节点标签)。我不确定这是 JUNG 问题还是 JFrame/GUI 问题(我对 Java GUI 开发不太熟悉)。我确实尝试使图形图像的最大尺寸(600x600)小于窗格的大小(800x800)。我尝试使用 setLocation() 使图形居中,但这似乎不起作用。即使它确实使图表居中,我也不确定它是否能解决问题。
这是我的代码。
import java.awt.Dimension;
import javax.swing.*;
import edu.uci.ics.jung.graph.*;
import edu.uci.ics.jung.visualization.VisualizationImageServer;
import edu.uci.ics.jung.algorithms.layout.SpringLayout;
import edu.uci.ics.jung.visualization.decorators.ToStringLabeller;
import edu.uci.ics.jung.algorithms.generators.random.EppsteinPowerLawGenerator;
import edu.uci.ics.jung.visualization.decorators.EdgeShape;
import org.apache.commons.collections15.Factory;
public class Main {
public static void main(String[] args) {
// Factories required for the graph generator
Factory <Integer> vertexFactory = new Factory<Integer>() {
int vertexCount = 0;
public Integer create() {
return vertexCount++;
}
};
Factory <Integer> edgeFactory = new Factory<Integer>() {
int edgeCount = 0;
public Integer create() {
return edgeCount++;
}
};
Factory<Graph<Integer,Integer>> graphFactory = new Factory<Graph<Integer,Integer>>() {
public Graph<Integer,Integer> create() {
return new UndirectedSparseGraph<Integer, Integer>();
}
};
int numVertices = 150;
int numEdges = 150;
int numIter = 100;
// Create a graph using a power law generator
EppsteinPowerLawGenerator gen = new EppsteinPowerLawGenerator(graphFactory, vertexFactory, edgeFactory, numVertices, numEdges, numIter);
Graph<Integer, Integer> graph = gen.create();
// Visualization of graph
SpringLayout layout = new SpringLayout(graph);
layout.setSize(new Dimension(600,600));
VisualizationImageServer vs = new VisualizationImageServer(layout, new Dimension(800, 800));
vs.setLocation(100,700); // seems to have no effect
vs.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
vs.getRenderContext().setEdgeShapeTransformer(new EdgeShape.Line<Integer, Number>());
JFrame frame = new JFrame();
frame.add(vs);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
}