JUNG布局问题

Question

我有一些图，我想使用JUNG2来显示，如下图所示。

我已经打了JUNG2的一些布局，但我总是得到这样的图像：

是否有可能，我想铺陈图不写一个新的布局？

在此先感谢

德米特里

UPD：这里是我用于可视化图形代码：

private Embedded createSampleGraph() { 
Embedded imageComponent = null; 

try { 
    final DocumentBuilderFactory docBuilderFactory = 
      DocumentBuilderFactory 
        .newInstance(); 
    final DocumentBuilder docBuilder = 
      docBuilderFactory.newDocumentBuilder(); 
    final Document document = docBuilder.newDocument(); 
    final Element svgelem = document.createElement("svg"); 
    document.appendChild(svgelem); 

    final SVGGraphics2D graphic2d = new SVGGraphics2D(document); 

    final Graph<String, String> graph = createGraph(); 
    final VisualizationImageServer<String, String> server = 
      createServer(graph); 

    server.printAll(graphic2d); 

    final Element el = graphic2d.getRoot(); 
    el.setAttributeNS(null, "viewBox", "0 0 350 350"); 
    el.setAttributeNS(null, "style", "width:100%;height:100%;"); 

    final ByteArrayOutputStream bout = new ByteArrayOutputStream(); 

    final Writer out = new OutputStreamWriter(bout, "UTF-8"); 
    graphic2d.stream(el, out); 

    final JungResource source = new JungResource(bout); 

    TPTApplication.getCurrentApplication().addResource(source); 

    imageComponent = new Embedded("", source); 

    imageComponent.setWidth(DEFAULT_WIDTH_PIXELS, UNITS_PIXELS); 
    imageComponent.setHeight(DEFAULT_HEIGHT_PIXELS, UNITS_PIXELS); 
    imageComponent.setMimeType("image/svg+xml"); 
    addComponent(imageComponent); 
} catch (final UnsupportedEncodingException exception) { 
    LOGGER.error(ErrorCodes.M_001_UNSUPPORTED_ENCONDING, exception); 
} catch (final SVGGraphics2DIOException exception) { 
    LOGGER.error(ErrorCodes.M_002_SVG_GRAPHICS_2D_IO, exception); 
} catch (final ParserConfigurationException exception) { 
    LOGGER.error(ErrorCodes.M_003_PARSER_CONFIGURATION, exception); 
} 
return imageComponent; 
} 

private VisualizationImageServer<String, String> createServer(
    final Graph<String, String> aGraph) { 
final Layout<String, String> layout = new FRLayout<String, String>(
     aGraph); 

layout.setSize(new Dimension(300, 300)); 
final VisualizationImageServer<String, String> vv = 
     new VisualizationImageServer<String, String>(
       layout, new Dimension(350, 350)); 
vv.getRenderContext().setVertexLabelTransformer(
     new ToStringLabeller<String>()); 
return vv; 
} 

private Graph<String, String> createGraph() { 
final Graph<String, String> graph = 
     new DirectedSparseMultigraph<String, String>(); 
final String vertex1 = "IE"; 
final String vertex2 = "P1"; 
final String vertex3 = "P2"; 
final String vertex4 = "P3"; 
final String vertex5 = "FE"; 

graph.addVertex(vertex1); 
graph.addVertex(vertex2); 
graph.addVertex(vertex3); 
graph.addVertex(vertex4); 
graph.addVertex(vertex5); 

graph.addEdge("1", vertex1, vertex2, EdgeType.DIRECTED); 
graph.addEdge("2", vertex2, vertex3, EdgeType.DIRECTED); 
graph.addEdge("3", vertex3, vertex5, EdgeType.DIRECTED); 
graph.addEdge("4", vertex1, vertex4, EdgeType.DIRECTED); 
graph.addEdge("5", vertex4, vertex5, EdgeType.DIRECTED); 
return graph; 
} 

UPD 17.03.2011

现在我可以得出一个曲线图像这样：

Answer 1

：

或者，你可以学习，以便在下面发布：

 
layout.setLocation(v, location); 
layout.lock(v, true); 

http://jung.sourceforge.net/doc/api/edu/uci/ics/jung/algorithms/layout/Layout.html

Answer 2

它与你如何在JUNG中创建顶点和边缘有关。

对于领先地位，建议你指createVertices（）和createEdges（）在JUNG示例方法WorldMapGraphDemo.class在edu.uci.ics.jung.samples包荣样品下-2.0.1.jar从您的JUNG 2.0框架库。

与使用Map对象存储用户定义的顶点和边缘信息的其他示例相比，方法中使用的方法更加清晰。其余的则使用随机生成的，库生成的或文件生成的信息。

一旦明确给你，你可以参考PluggableRendererDemo.class提高你的图形（如相应的包装edu.uci.ics.jung.visualization.decorators下装饰变压器和渲染类和edu.uci.ics.jung.visualization.renderers用于装饰和渲染顶点，边，方向箭头，形状，大小等）

Answer 3

好吧......现在，我明白你真的想解决。德米特里，你可以检查另一个JUNG的例子，L2RTreeLayoutDemo.class ...它看起来如此接近你想达到的目标。如果您想要锁定特定顶点的位置，请为每一个下面创建Layout之后将其添加到VisualizationViewer/VisualizationImageServer前 Can Jung graphics appear in the same place every time?