我有一个似乎可以正常工作的应用程序，只要我不尝试旋转图形。如果图形旋转，边旋转，但顶点保持在原来的位置。我在下面包含了旋转前后的图像。
import edu.uci.ics.jung.algorithms.layout.GraphElementAccessor;
import edu.uci.ics.jung.algorithms.layout.Layout;
import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.graph.SparseMultigraph;
import edu.uci.ics.jung.visualization.BasicVisualizationServer;
import edu.uci.ics.jung.visualization.RenderContext;
import edu.uci.ics.jung.visualization.VisualizationViewer;
import edu.uci.ics.jung.visualization.control.DefaultModalGraphMouse;
import edu.uci.ics.jung.visualization.control.GraphMouseListener;
import edu.uci.ics.jung.visualization.control.ModalGraphMouse;
import edu.uci.ics.jung.visualization.decorators.ToStringLabeller;
import edu.uci.ics.jung.visualization.renderers.Renderer;
import edu.uci.ics.jung.visualization.transform.shape.GraphicsDecorator;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Point2D;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
public class WM_GraphDis
{
WM_Project project;
String msg;
ResultSet res;
Graph<WM_Entity, WM_EConnection> g;
VisualizationViewer<WM_Entity, WM_EConnection> vv;
JFrame frame;
//--------------------------------------------------------------------------
public void drawGraph(WM_Project pr)
{
int glaytype;
project = pr;
if(project == null)
{
msg = "Project must be set before \n graph can be shown.";
JOptionPane.showMessageDialog(null, msg);
return;
}
//Choose Graph Layout
WM_Glayout glay = new WM_Glayout(null, true);
glay.setLocationRelativeTo(null);
glay.showDialog();
glaytype = glay.getValue();
if( glaytype == WM_Glayout.VOID)
{
return;
}
//Create an instance of the Graph
g = new SparseMultigraph<WM_Entity, WM_EConnection>();
//Add Vertices to Graph
//Get the instances of Entities from the database and
//add each one as a vertex;
try
{
res = WM_DBI.getEntities(project.projectID);
res.beforeFirst();
while(res.next())
{
WM_Entity ent = new WM_Entity();
ent = WM_DBI.getEntity(res.getInt("entityID"));
g.addVertex(ent);
}
}
catch(SQLException se)
{
msg = "Problem getting Vertices. \n" +
se.getLocalizedMessage();
ILog.dbFail(msg );
JOptionPane.showMessageDialog(null, msg);
return;
}
//Add Edges to Graph
//Get the instances of EConnection from the database and
//then get the verticies for each connection and an instance
//of the connection. Add each as an edge.
try
{
res = WM_DBI.getAllConnections(project.projectID);
res.beforeFirst();
while(res.next())
{
WM_Entity orval = WM_DBI.getEntity(res.getInt("origin"));
WM_Entity taval = WM_DBI.getEntity(res.getInt("target"));
WM_EConnection con = WM_DBI.getConnection(res.getInt("econnectionID"));
g.addEdge(con,orval,taval);
}
}
catch(SQLException se)
{
msg = "Problem geting Edges. \n" +
se.getLocalizedMessage();
ILog.dbFail(msg );
JOptionPane.showMessageDialog(null, msg);
return;
}
//Now make the Graph Visible
//Get Screen Dimensions
// java - get screen size using the Toolkit class
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int screenX = screenSize.width;
int screenY = screenSize.height;
//now set the graph dimensions to be a fraction 10% smaller
int dimx = screenX - (screenX/10);
int dimy = screenY - (screenY/10);
Layout<WM_Entity, WM_EConnection> layout;
layout = layout = new edu.uci.ics.jung.algorithms.layout.CircleLayout(g);
if( glaytype == WM_Glayout.CIRCULAR)
{
layout = new edu.uci.ics.jung.algorithms.layout.CircleLayout(g);
}
else if( glaytype == WM_Glayout.SPRING)
{
layout = new edu.uci.ics.jung.algorithms.layout.SpringLayout(g);
}
else if( glaytype == WM_Glayout.FORCER)
{
layout = new edu.uci.ics.jung.algorithms.layout.FRLayout<>(g);
}
else if( glaytype == WM_Glayout.SOM)
{
layout = new edu.uci.ics.jung.algorithms.layout.ISOMLayout<>(g);
}
else if( glaytype == WM_Glayout.RAD)
{
//layout = new edu.uci.ics.jung.algorithms.layout.RadialTreeLayout<>(g, 50, 50);
}
else
{
layout = layout = new edu.uci.ics.jung.algorithms.layout.CircleLayout(g);
}
layout.setSize(new Dimension(dimx-10,dimy-10));
//BasicVisualizationServer<WM_Entity, WM_EConnection> vv =
// new BasicVisualizationServer<WM_Entity, WM_EConnection>(layout);
vv = new VisualizationViewer<WM_Entity, WM_EConnection>(layout);
vv.setPreferredSize(new Dimension(dimx-12, dimy-12));
vv.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
vv.getRenderContext().setEdgeLabelTransformer(new ToStringLabeller());
vv.getRenderer().setVertexRenderer(new MyRenderer());
DefaultModalGraphMouse gm = new DefaultModalGraphMouse();
gm.setMode(ModalGraphMouse.Mode.TRANSFORMING);
vv.addKeyListener(gm.getModeKeyListener());
vv.addGraphMouseListener(new GraphClicked());
vv.setGraphMouse(gm);
frame = new JFrame("Graph of " + project.name);
frame.setPreferredSize(new Dimension( dimx, dimy));
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.getContentPane().add(vv);
frame.setLocationRelativeTo(null);
frame.pack();
frame.setVisible(true);
}
//--------------------------------------------------------------------------
private class GraphClicked implements GraphMouseListener
{
@Override
public void graphClicked(Object v, MouseEvent me)
{
System.out.println(me.getButton() + " : " + v.toString());
int mx = me.getX();
int my = me.getY();
WM_Entity ent = (WM_Entity) v;
WM_GraphInfo gi = new WM_GraphInfo(frame, true, ent, mx, my );
gi.showDialog();
}
@Override
public void graphPressed(Object v, MouseEvent me)
{
//Do Nothing
}
@Override
public void graphReleased(Object v, MouseEvent me)
{
//Do Nothing
}
}
//--------------------------------------------------------------------------
private class MyRenderer implements Renderer.Vertex<WM_Entity, WM_EConnection>
{
public void paintVertex(RenderContext<WM_Entity, WM_EConnection> rc, Layout<WM_Entity, WM_EConnection> layout, WM_Entity vertex)
{
GraphicsDecorator graphicsContext = rc.getGraphicsContext();
Point2D center = layout.transform(vertex);
Shape shape = null;
Color color = null;
if(vertex.type.name.equals("Title"))
{
shape = new Rectangle((int) center.getX() - 10, (int) center.getY() - 10, 30, 30);
color = new Color(255,204,51); //Gold
}
else if(vertex.type.name.equals("Character"))
{
shape = new Rectangle((int) center.getX() - 10, (int) center.getY() - 20, 20, 40);
color = new Color(255,255,0);//Yellow
}
else if(vertex.type.name.equals("Event"))
{
shape = new Ellipse2D.Double(center.getX() - 10, center.getY() - 10, 20, 20);
color = new Color(51, 204, 255);//Light Blue
}
else if (vertex.type.name.equals("Place"))
{
shape = new Ellipse2D.Double(center.getX() - 10, center.getY() - 10, 30, 30);
color = new Color(204,204,204); //Light Grey
}
else if (vertex.type.name.equals("Item"))
{
shape = new Ellipse2D.Double(center.getX() - 10, center.getY() - 10, 30, 30 );
color = new Color( 102, 0, 153 ); // Purple
}
else if ( vertex.type.name.equals("Occupation"))
{
shape = new Ellipse2D.Double(center.getX() - 10, center.getY() - 10, 30, 30 );
color = new Color( 255, 102, 0 ); // Orange
}
else
{
shape = new Rectangle((int) center.getX() - 10, (int) center.getY() - 20, 30, 30);
color = new Color(255,0,0);//Red
}
graphicsContext.setPaint(color);
graphicsContext.fill(shape);
} //end PaintVertex
}
}
我怀疑问题出在 MyRenderer 类上，因为它在我使用默认渲染时工作正常，但在我实现 MyRenderer 时停止工作。缩放似乎没有问题，只有旋转和剪切。