/**
* Converts the prefuse graph data into the jung graph data.
*
* @param vg the prefuse visual graph
* @return graph the jung graph data
*/
public static edu.uci.ics.jung.graph.Graph<String, String> convertJungGraph(VisualGraph vg) {
edu.uci.ics.jung.graph.Graph<String, String> graph =
new UndirectedSparseGraph<String, String>();
if (vg != null) {
Iterator<?> nodeIter = vg.nodes();
while (nodeIter.hasNext()) {
VisualItem node = (VisualItem) nodeIter.next();
String nodeId = node.getString("id");
// System.out.println("node id == " + nodeId);
graph.addVertex(nodeId);
}
Iterator<?> edgeIter = vg.edges();
while (edgeIter.hasNext()) {
VisualItem edge = (VisualItem) edgeIter.next();
String node1 = edge.getString("node1");
String node2 = edge.getString("node2");
String edgeId = node1 + node2;
// System.out.println("edge id == " + edgeId);
graph.addEdge(edgeId, node1, node2, EdgeType.UNDIRECTED);
}
}
return graph;
}
/**
* Finds a node by node id.
*
* @param vg
* @param nodeId
* @return VisualItem the node
*/
public static VisualItem findNode(VisualGraph vg, String nodeId) {
if (vg != null) {
Iterator<?> nodeIter = vg.nodes();
while (nodeIter.hasNext()) {
VisualItem node = (VisualItem) nodeIter.next();
if (node.getString("id").equals(nodeId)) {
return node;
}
}
}
return null;
}
private void initDataGroups() {
// create sample graph
// 9 nodes broken up into 3 interconnected cliques
Graph g = new Graph();
for (int i = 0; i < 3; ++i) {
Node n1 = g.addNode();
Node n2 = g.addNode();
Node n3 = g.addNode();
g.addEdge(n1, n2);
g.addEdge(n1, n3);
g.addEdge(n2, n3);
}
g.addEdge(0, 3);
g.addEdge(3, 6);
g.addEdge(6, 0);
// add visual data groups
VisualGraph vg = m_vis.addGraph(GRAPH, g);
m_vis.setInteractive(EDGES, null, false);
m_vis.setValue(NODES, null, VisualItem.SHAPE, new Integer(Constants.SHAPE_ELLIPSE));
at = m_vis.addAggregates(AGGR);
at.addColumn(VisualItem.POLYGON, float[].class);
at.addColumn("id", int.class);
// add nodes to aggregates
// create an aggregate for each 3-clique of nodes
Iterator nodes = vg.nodes();
for (int i = 0; i < 3; ++i) {
AggregateItem aitem = (AggregateItem) at.addItem();
aitem.setInt("id", i);
for (int j = 0; j < 3; ++j) {
aitem.addItem((VisualItem) nodes.next());
}
}
}
