private boolean edgesCompatible(int edge1, int edge2) {
E e1 = edgeList1.get(edge1);
E e2 = edgeList2.get(edge2);
boolean result = false;
// edge label must be the same
if (e1.getLabel().equals(e2.getLabel())) {
// check connecting vertex labels
L v1SourceLbl = g1.getEdgeSource(e1).getLabel(),
v1TargetLbl = g1.getEdgeTarget(e1).getLabel(),
v2SourceLbl = g2.getEdgeSource(e2).getLabel(),
v2TargetLbl = g2.getEdgeTarget(e2).getLabel();
// checks if the pair of source vertices have the same label, and checks the same for the
// target vertices
boolean sourceTargetMatch =
v1SourceLbl.equals(v2SourceLbl) && v1TargetLbl.equals(v2TargetLbl);
if (directed) {
result = sourceTargetMatch;
} else {
// checks if source1,target2 have the same label and if target1,source2 have the same label
boolean sourceTargetInverseMatch =
v1SourceLbl.equals(v2TargetLbl) && v1TargetLbl.equals(v2SourceLbl);
result = (sourceTargetMatch || sourceTargetInverseMatch);
}
}
return result;
}
/**
* @param vertexNumber the number which identifies the vertex v in this order.
* @return the identifying numbers of all vertices which are connected to v by an edge incoming to
* v.
*/
public int[] getInEdges(int vertexNumber) {
if (cacheEdges && (incomingEdges[vertexNumber] != null)) {
return incomingEdges[vertexNumber];
}
V v = getVertex(vertexNumber);
Set<E> edgeSet;
if (graph instanceof DirectedGraph<?, ?>) {
edgeSet = ((DirectedGraph<V, E>) graph).incomingEdgesOf(v);
} else {
edgeSet = graph.edgesOf(v);
}
int[] vertexArray = new int[edgeSet.size()];
int i = 0;
for (E edge : edgeSet) {
V source = graph.getEdgeSource(edge), target = graph.getEdgeTarget(edge);
vertexArray[i++] = mapVertexToOrder.get(source.equals(v) ? target : source);
}
if (cacheEdges) {
incomingEdges[vertexNumber] = vertexArray;
}
return vertexArray;
}
protected Graph<String, DefaultWeightedEdge> createWithBias(boolean negate) {
Graph<String, DefaultWeightedEdge> g;
double bias = 1;
if (negate) {
// negative-weight edges are being tested, so only a directed graph
// makes sense
g = new SimpleDirectedWeightedGraph<String, DefaultWeightedEdge>(DefaultWeightedEdge.class);
bias = -1;
} else {
// by default, use an undirected graph
g = new SimpleWeightedGraph<String, DefaultWeightedEdge>(DefaultWeightedEdge.class);
}
g.addVertex(V1);
g.addVertex(V2);
g.addVertex(V3);
g.addVertex(V4);
g.addVertex(V5);
e12 = Graphs.addEdge(g, V1, V2, bias * 2);
e13 = Graphs.addEdge(g, V1, V3, bias * 3);
e24 = Graphs.addEdge(g, V2, V4, bias * 5);
e34 = Graphs.addEdge(g, V3, V4, bias * 20);
e45 = Graphs.addEdge(g, V4, V5, bias * 5);
e15 = Graphs.addEdge(g, V1, V5, bias * 100);
return g;
}
@Override
public BufferedImage getView() {
if (img == null) {
return img;
}
Graphics2D gpcs = (Graphics2D) img.getGraphics();
gpcs.scale(
windowSize.getWidth() / canvasSize.getWidth(),
windowSize.getHeight() / canvasSize.getHeight());
gpcs.setColor(Color.WHITE);
gpcs.fillRect(0, 0, (int) canvasSize.getWidth(), (int) canvasSize.getHeight());
for (Edge e : graph.edgeSet()) {
if (e.isEnabled()) {
gpcs.setColor(e.getStrokeColor());
gpcs.draw(e);
}
}
for (Vertex v : graph.vertexSet()) {
if (v.isEnabled()) {
gpcs.setColor(v.getStrokeColor());
gpcs.draw(v);
gpcs.setColor(v.getFillColor());
gpcs.fill(v);
}
}
return img;
}
@Override
public TraversalGraph<V, E> reconstructTraversalGraph() {
if (currentStartNode == null) {
throw new IllegalStateException(
"You must call #calculate before " + "reconstructing the traversal graph.");
}
TraversalGraph<V, E> traversalGraph =
new TraversalGraph<V, E>(graph.getEdgeFactory(), currentStartNode);
for (V v : graph.vertexSet()) {
Set<E> predEdges = (Set<E>) v.getPredecessorEdges();
for (E e : predEdges) {
V source = graph.getEdgeSource(e);
V target = graph.getEdgeTarget(e);
traversalGraph.addVertex(source);
traversalGraph.addVertex(target);
if (v.equals(source)) {
traversalGraph.addEdge(target, source).setBaseGraphEdge(e);
} else if (v.equals(target)) {
traversalGraph.addEdge(source, target).setBaseGraphEdge(e);
} else {
throw new IllegalStateException(
"A vertex has a predecessor " + "edge not ending on itself.");
}
}
}
return traversalGraph;
}
private void init(Graph<V, E> g, Set<V> vertexSet, Set<E> edgeSet) {
// create a map between vertex value to its order(1st,2nd,etc)
// "CAT"=1 "DOG"=2 "RHINO"=3
this.mapVertexToOrder = new HashMap<V, Integer>(vertexSet.size());
int counter = 0;
for (V vertex : vertexSet) {
mapVertexToOrder.put(vertex, new Integer(counter));
counter++;
}
// create a friendlier representation of an edge
// by order, like 2nd->3rd instead of B->A
// use the map to convert vertex to order
// on directed graph, edge A->B must be (A,B)
// on undirected graph, edge A-B can be (A,B) or (B,A)
this.labelsEdgesSet = new HashSet<LabelsEdge>(edgeSet.size());
for (E edge : edgeSet) {
V sourceVertex = g.getEdgeSource(edge);
Integer sourceOrder = mapVertexToOrder.get(sourceVertex);
int sourceLabel = sourceOrder.intValue();
int targetLabel = (mapVertexToOrder.get(g.getEdgeTarget(edge))).intValue();
LabelsEdge lablesEdge = new LabelsEdge(sourceLabel, targetLabel);
this.labelsEdgesSet.add(lablesEdge);
if (g instanceof UndirectedGraph<?, ?>) {
LabelsEdge oppositeEdge = new LabelsEdge(targetLabel, sourceLabel);
this.labelsEdgesSet.add(oppositeEdge);
}
}
}
/**
* Find the maximum weight matching of a path using dynamic programming.
*
* @param path a list of edges. The code assumes that the list of edges is a valid simple path,
* and that is not a cycle.
* @return a maximum weight matching of the path
*/
public Pair<Double, Set<E>> getMaximumWeightMatching(Graph<V, E> g, LinkedList<E> path) {
int pathLength = path.size();
// special cases
switch (pathLength) {
case 0:
// special case, empty path
return Pair.of(Double.valueOf(0d), Collections.emptySet());
case 1:
// special case, one edge
E e = path.getFirst();
double eWeight = g.getEdgeWeight(e);
if (comparator.compare(eWeight, 0d) > 0) {
return Pair.of(eWeight, Collections.singleton(e));
} else {
return Pair.of(Double.valueOf(0d), Collections.emptySet());
}
}
// make sure work array has enough space
if (a.length < pathLength + 1) {
a = new double[pathLength + 1];
}
// first pass to find solution
Iterator<E> it = path.iterator();
E e = it.next();
double eWeight = g.getEdgeWeight(e);
a[0] = 0d;
a[1] = (comparator.compare(eWeight, 0d) > 0) ? eWeight : 0d;
for (int i = 2; i <= pathLength; i++) {
e = it.next();
eWeight = g.getEdgeWeight(e);
if (comparator.compare(a[i - 1], a[i - 2] + eWeight) > 0) {
a[i] = a[i - 1];
} else {
a[i] = a[i - 2] + eWeight;
}
}
// reverse second pass to build solution
Set<E> matching = new HashSet<>();
it = path.descendingIterator();
int i = pathLength;
while (i >= 1) {
e = it.next();
if (comparator.compare(a[i], a[i - 1]) > 0) {
matching.add(e);
// skip next edge
if (i > 1) {
e = it.next();
}
i--;
}
i--;
}
// return solution
return Pair.of(a[pathLength], matching);
}
/**
* Returns a List with unique elements,
*
* @param v1 vertex from g1
* @return
*/
public List<V> getPrioritySubset(V v1) {
// The resulting list
List<V> result = new ArrayList<V>();
// list of already mapped vertices that neighbour v1
List<V> v1Others = new ArrayList<V>();
V v1other;
V v2other;
for (E e1 : g1.edgesOf(v1)) {
v1other = Graphs.getOppositeVertex(g1, e1, v1);
if (mappedVerticesFromG1.contains(v1other)) {
v1Others.add(v1other);
}
}
for (V v2 : g2.vertexSet()) {
// if v2's label is the same of v1's label and v2 has not been mapped yet
if (v1.getLabel().equals(v2.getLabel()) && !mappedVerticesFromG2.contains(v2)) {
// test if there is an edge to a vertex which has already been mapped
for (E e2 : g2.edgesOf(v2)) {
v2other = Graphs.getOppositeVertex(g2, e2, v2);
// if the vertex v2other has already been mapped
if (mappedVerticesFromG2.contains(v2other)) {
// labels are not checked, this is done at a later stage anyway and doing it twice is
// not needed and takes too much time
result.add(v2);
break;
}
}
}
}
return result;
}
/**
* Constructs a new JGraph model adapter for the specified JGraphT graph.
*
* @param jGraphTGraph the JGraphT graph for which JGraph model adapter to be created. <code>null
* </code> is NOT permitted.
* @param defaultVertexAttributes a default map of JGraph attributes to format vertices. <code>
* null</code> is NOT permitted.
* @param defaultEdgeAttributes a default map of JGraph attributes to format edges. <code>null
* </code> is NOT permitted.
* @param cellFactory a {@link CellFactory} to be used to create the JGraph cells. <code>null
* </code> is NOT permitted.
* @throws IllegalArgumentException
*/
public JGraphModelAdapter(
Graph<V, E> jGraphTGraph,
AttributeMap defaultVertexAttributes,
AttributeMap defaultEdgeAttributes,
CellFactory<V, E> cellFactory) {
super();
if ((jGraphTGraph == null)
|| (defaultVertexAttributes == null)
|| (defaultEdgeAttributes == null)
|| (cellFactory == null)) {
throw new IllegalArgumentException("null is NOT permitted");
}
jtGraph = new ShieldedGraph(jGraphTGraph);
setDefaultVertexAttributes(defaultVertexAttributes);
setDefaultEdgeAttributes(defaultEdgeAttributes);
this.cellFactory = cellFactory;
if (jGraphTGraph instanceof ListenableGraph<?, ?>) {
ListenableGraph<V, E> g = (ListenableGraph<V, E>) jGraphTGraph;
g.addGraphListener(new JGraphTListener());
}
for (Iterator<V> i = jGraphTGraph.vertexSet().iterator(); i.hasNext(); ) {
handleJGraphTAddedVertex(i.next());
}
for (Iterator<E> i = jGraphTGraph.edgeSet().iterator(); i.hasNext(); ) {
handleJGraphTAddedEdge(i.next());
}
this.addGraphModelListener(new JGraphListener());
}
/**
* Creates a new iterator for the specified graph. Iteration will start at the specified start
* vertex. If the specified start vertex is <code>
* null</code>, Iteration will start at an arbitrary graph vertex.
*
* @param g the graph to be iterated.
* @param startVertex the vertex iteration to be started.
* @throws IllegalArgumentException if <code>g==null</code> or does not contain <code>startVertex
* </code>
*/
public CrossComponentIterator(Graph<V, E> g, V startVertex) {
super();
if (g == null) {
throw new IllegalArgumentException("graph must not be null");
}
graph = g;
specifics = createGraphSpecifics(g);
vertexIterator = g.vertexSet().iterator();
setCrossComponentTraversal(startVertex == null);
reusableEdgeEvent = new FlyweightEdgeEvent<V, E>(this, null);
reusableVertexEvent = new FlyweightVertexEvent<V>(this, null);
if (startVertex == null) {
// pick a start vertex if graph not empty
if (vertexIterator.hasNext()) {
this.startVertex = vertexIterator.next();
} else {
this.startVertex = null;
}
} else if (g.containsVertex(startVertex)) {
this.startVertex = startVertex;
} else {
throw new IllegalArgumentException("graph must contain the start vertex");
}
}
public int[] getEdgeNumbers(E e) {
V v1 = graph.getEdgeSource(e), v2 = graph.getEdgeTarget(e);
int[] edge = new int[2];
edge[0] = mapVertexToOrder.get(v1);
edge[1] = mapVertexToOrder.get(v2);
return edge;
}
E addEdge(V jtSource, V jtTarget) {
E jtEdge = graph.getEdgeFactory().createEdge(jtSource, jtTarget);
jtElementsBeingAdded.add(jtEdge);
boolean added = graph.addEdge(jtSource, jtTarget, jtEdge);
jtElementsBeingAdded.remove(jtEdge);
return added ? jtEdge : null;
}
/** Calculates the matrix of all shortest paths, but does not populate the paths map. */
private void lazyCalculateMatrix() {
if (d != null) {
// already done
return;
}
int n = vertices.size();
// init the backtrace matrix
backtrace = new int[n][n];
for (int i = 0; i < n; i++) {
Arrays.fill(backtrace[i], -1);
}
// initialize matrix, 0
d = new double[n][n];
for (int i = 0; i < n; i++) {
Arrays.fill(d[i], Double.POSITIVE_INFINITY);
}
// initialize matrix, 1
for (int i = 0; i < n; i++) {
d[i][i] = 0.0;
}
// initialize matrix, 2
Set<E> edges = graph.edgeSet();
for (E edge : edges) {
V v1 = graph.getEdgeSource(edge);
V v2 = graph.getEdgeTarget(edge);
int v_1 = vertices.indexOf(v1);
int v_2 = vertices.indexOf(v2);
d[v_1][v_2] = graph.getEdgeWeight(edge);
if (!(graph instanceof DirectedGraph<?, ?>)) {
d[v_2][v_1] = graph.getEdgeWeight(edge);
}
}
// run fw alg
for (int k = 0; k < n; k++) {
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
double ik_kj = d[i][k] + d[k][j];
if (ik_kj < d[i][j]) {
d[i][j] = ik_kj;
backtrace[i][j] = k;
}
}
}
}
}
/**
* Compute all vertices that have positive degree by iterating over the edges on purpose. This
* keeps the complexity to O(m) where m is the number of edges.
*
* @param graph the graph
* @return set of vertices with positive degree
*/
private Set<V> initVisibleVertices(Graph<V, E> graph) {
Set<V> visibleVertex = new HashSet<>();
for (E e : graph.edgeSet()) {
V s = graph.getEdgeSource(e);
V t = graph.getEdgeTarget(e);
if (!s.equals(t)) {
visibleVertex.add(s);
visibleVertex.add(t);
}
}
return visibleVertex;
}
/**
* Returns a graph, each vertex corresponding with an vector in R, and edges connecting vertices
* (vectors) if they are obtuse or at right angles.
*
* @param TOL > 0 decides how close to zero is considered zero.
*/
public static Graph<Matrix, DefaultEdge> obtuseConnectedGraph(Set<Matrix> R, double TOL) {
Graph G = new SimpleGraph<>(DefaultEdge.class);
for (Matrix v : R) G.addVertex(v); // graph contains the relevant vectors
int N = R.size();
Matrix[] b = new Matrix[N];
R.toArray(b); // build an array with pointers to vectors in R (also vertices in G)
// add edges between obtuse relevant vectors.
for (int i = 0; i < N; i++)
for (int j = i + 1; j < N; j++) if (dot(b[i], b[j]) < Math.abs(TOL)) G.addEdge(b[i], b[j]);
return G;
}
/**
* Compute weight and add edge to the graph
*
* @param way
* @param from
* @param to
*/
private void addEdge(Way way, Node from, Node to) {
LatLon fromLL = from.getCoor();
LatLon toLL = from.getCoor();
if (fromLL == null || toLL == null) {
return;
}
double length = fromLL.greatCircleDistance(toLL);
OsmEdge edge = new OsmEdge(way, from, to);
edge.setSpeed(12.1);
graph.addEdge(from, to, edge);
// weight = getWeight(way);
double weight = getWeight(way, length);
setWeight(edge, length);
logger.debug(
"edge for way "
+ way.getId()
+ "(from node "
+ from.getId()
+ " to node "
+ to.getId()
+ ") has weight: "
+ weight);
((DirectedWeightedMultigraph<Node, OsmEdge>) graph).setEdgeWeight(edge, weight);
}
/**
* @param graph the graph to be ordered
* @param orderByDegree should the vertices be ordered by their degree. This speeds up the VF2
* algorithm.
* @param cacheEdges if true, the class creates a adjacency matrix and two arrays for incoming and
* outgoing edges for fast access.
*/
public GraphOrdering(Graph<V, E> graph, boolean orderByDegree, boolean cacheEdges) {
this.graph = graph;
this.cacheEdges = cacheEdges;
List<V> vertexSet = new ArrayList<>(graph.vertexSet());
if (orderByDegree) {
java.util.Collections.sort(vertexSet, new GeneralVertexDegreeComparator<>(graph));
}
vertexCount = vertexSet.size();
mapVertexToOrder = new HashMap<>();
mapOrderToVertex = new ArrayList<>(vertexCount);
if (cacheEdges) {
outgoingEdges = new int[vertexCount][];
incomingEdges = new int[vertexCount][];
adjMatrix = new Boolean[vertexCount][vertexCount];
}
Integer i = 0;
for (V vertex : vertexSet) {
mapVertexToOrder.put(vertex, i++);
mapOrderToVertex.add(vertex);
}
}
public static Set outgoingEdgesOf(Graph g, Object node) {
if (g instanceof DirectedGraph) {
return ((DirectedGraph) g).outgoingEdgesOf(node);
} else {
return g.edgesOf(node);
}
}
@Override
public <N extends Node, E extends Edge> Graph<N, E> createGraph(
VertexFactory<N> vfac, EdgeFactory<N, E> efac) {
Integer inp =
InputDialog.getIntegerInput("Game Tree Factory", "No. of levels?", 2, Integer.MAX_VALUE);
if (inp == null) {
return null;
}
int levels = inp;
final double levelSep = ((2 << levels - 1) * (5.0 + 5.0)) / (Math.PI * levels);
final double shift = levels * levelSep;
Graph<N, E> graph = new SimpleGraph<>(efac);
List<N> parents = new LinkedList<>();
List<N> children = new LinkedList<>();
Node.PropChanger npr = Node.PropChanger.create();
N n = vfac.createVertex();
npr.setPosition(n, polarToCartesian(0, 0, shift));
graph.addVertex(n);
parents.add(n);
for (int i = 1; i <= levels; i++) {
final double curRadius = i * levelSep;
double th = 0;
final double thDelta = Math.PI / parents.size();
for (N p : parents) {
N c1 = vfac.createVertex();
N c2 = vfac.createVertex();
npr.setPosition(c1, polarToCartesian(curRadius, th + 0.5 * thDelta, shift));
npr.setPosition(c2, polarToCartesian(curRadius, th + 1.5 * thDelta, shift));
th += 2 * thDelta;
graph.addVertex(c1);
graph.addVertex(c2);
graph.addEdge(p, c1);
graph.addEdge(p, c2);
children.add(c1);
children.add(c2);
}
parents = children;
children = new LinkedList<>();
}
return graph;
}
public Node whatNodeIGetTo(Node from, Transition with) {
for (Edge e : myGraph.edgeSet()) {
if (e.getSource().equals(from) && e.getTransition().equals(with)) {
return e.getDest();
}
}
return null;
}
/**
* Constructs the shortest path array for the given graph.
*
* @param g input graph
* @param <V> a V object.
* @param <E> a E object.
*/
public FloydWarshall(Graph<V, E> g) {
int sz = g.vertexSet().size();
d = new double[sz][sz];
indices = new HashMap<V, Integer>();
// Initialise distance to infinity, or the neighbours weight, or 0 if
// same
for (V v1 : g.vertexSet()) {
for (V v2 : g.vertexSet()) {
if (v1 == v2) {
d[index(v1)][index(v2)] = 0;
} else {
E e = g.getEdge(v1, v2);
if (e == null) {
d[index(v1)][index(v2)] = Double.POSITIVE_INFINITY;
} else {
d[index(v1)][index(v2)] = g.getEdgeWeight(e);
}
}
}
}
// now iterate k times
for (int k = 0; k < sz; k++) {
for (V v1 : g.vertexSet()) {
for (V v2 : g.vertexSet()) {
d[index(v1)][index(v2)] =
Math.min(d[index(v1)][index(v2)], d[index(v1)][k] + d[k][index(v2)]);
if (Double.POSITIVE_INFINITY != d[index(v1)][index(v2)])
diameter = Math.max(diameter, d[index(v1)][index(v2)]);
}
}
}
}
/**
* @return the amount of arcs that are connected on both sides to nodes that have been mapped so
* far
*/
public int getArcsLeftForMappedVertices() {
int result = 0;
boolean columnOr;
for (int y = 0; y < dimy; y++) {
columnOr = false;
for (int x = 0; x < dimx; x++) {
columnOr |= matrix[x][y];
}
if (columnOr) {
// if Edge edgeList2.get(y) is connected (on both sides) to vertices in mappedVerticesFromG2
if (mappedVerticesFromG2.contains(g2.getEdgeSource(edgeList2.get(y)))
&& mappedVerticesFromG2.contains(g2.getEdgeSource(edgeList2.get(y)))) {
result++;
}
}
}
return result;
}
/** {@inheritDoc} */
public void generateGraph(
Graph<V, E> target, VertexFactory<V> vertexFactory, Map<String, V> resultMap) {
if (size < 1) {
return;
}
// Add all the vertices to the set
for (int i = 0; i < size; i++) {
V newVertex = vertexFactory.createVertex();
target.addVertex(newVertex);
}
/*
* We want two iterators over the vertex set, one fast and one slow.
* The slow one will move through the set once. For each vertex,
* the fast iterator moves through the set, adding an edge to all
* vertices we haven't connected to yet.
*
* If we have an undirected graph, the second addEdge call will return
* nothing; it will not add a second edge.
*/
Iterator<V> slowI = target.vertexSet().iterator();
Iterator<V> fastI;
while (slowI.hasNext()) { // While there are more vertices in the set
V latestVertex = slowI.next();
fastI = target.vertexSet().iterator();
// Jump to the first vertex *past* latestVertex
while (fastI.next() != latestVertex) {;
}
// And, add edges to all remaining vertices
V temp;
while (fastI.hasNext()) {
temp = fastI.next();
target.addEdge(latestVertex, temp);
target.addEdge(temp, latestVertex);
}
}
}
@Override
public void setGraph(Graph<? extends Vertex, ? extends Edge> g) {
this.graph = g;
Rectangle r = new Rectangle();
for (Vertex v : g.vertexSet()) {
r = r.union(v.getBounds());
}
canvasSize =
new Dimension((int) Math.ceil(r.getWidth()) + 20, (int) Math.ceil(r.getHeight()) + 20);
}
private void shortestPathRecur(List<E> edges, int v_a, int v_b) {
int k = backtrace[v_a][v_b];
if (k == -1) {
E edge = graph.getEdge(vertices.get(v_a), vertices.get(v_b));
if (edge != null) {
edges.add(edge);
}
} else {
shortestPathRecur(edges, v_a, k);
shortestPathRecur(edges, k, v_b);
}
}
public long countExternalEdges(Integer i, Set<DefaultWeightedEdge> neighborSet) {
int numberExternalEdges = 0;
// count number of external edges
for (DefaultWeightedEdge edge : neighborSet) {
// no easy way to get 'other' out of JGraph's undirected graph edge traversal... ugh!
Integer src = graph.getEdgeSource(edge);
Integer dst = graph.getEdgeTarget(edge);
Integer other = src.equals(i) ? dst : src;
if (contains(other)) {
numberExternalEdges -= 1;
} else {
numberExternalEdges += 1;
}
}
return numberExternalEdges;
}
public List<Graph> getAllEdgeCoverage() {
List<Edge> toVisit = new ArrayList<>(myGraph.edgeSet());
List<Edge> left = new ArrayList<>(myGraph.edgeSet());
List<Graph> toReturn = new ArrayList<>();
for (Edge e : toVisit) {
if (left.contains(e)) {
if (getInitialState().equals(e.getSource())) {
List<Edge> toAdd = new ArrayList<>();
toAdd.add(e);
toReturn.add(buildGraph(toAdd));
} else {
List<Edge> path =
BellmanFordShortestPath.findPathBetween(myGraph, getInitialState(), e.getSource());
path.add(e);
left.remove(e);
left.removeAll(path);
toReturn.add(buildGraph(path));
}
}
}
return toReturn;
}
/** {@inheritDoc} */
public void generateGraph(
Graph<V, E> target, final VertexFactory<V> vertexFactory, Map<String, V> resultMap) {
if (size < 1) {
return;
}
// A little trickery to intercept the rim generation. This is
// necessary since target may be initially non-empty, meaning we can't
// rely on its vertex set after the rim is generated.
final Collection<V> rim = new ArrayList<V>();
VertexFactory<V> rimVertexFactory =
new VertexFactory<V>() {
public V createVertex() {
V vertex = vertexFactory.createVertex();
rim.add(vertex);
return vertex;
}
};
RingGraphGenerator<V, E> ringGenerator = new RingGraphGenerator<V, E>(size - 1);
ringGenerator.generateGraph(target, rimVertexFactory, resultMap);
V hubVertex = vertexFactory.createVertex();
target.addVertex(hubVertex);
if (resultMap != null) {
resultMap.put(HUB_VERTEX, hubVertex);
}
for (V rimVertex : rim) {
if (inwardSpokes) {
target.addEdge(rimVertex, hubVertex);
} else {
target.addEdge(hubVertex, rimVertex);
}
}
}
/** {@inheritDoc} */
public void generateGraph(
Graph<V, E> target, VertexFactory<V> vertexFactory, Map<String, V> resultMap) {
V lastVertex = null;
for (int i = 0; i < size; ++i) {
V newVertex = vertexFactory.createVertex();
target.addVertex(newVertex);
if (lastVertex == null) {
if (resultMap != null) {
resultMap.put(START_VERTEX, newVertex);
}
} else {
target.addEdge(lastVertex, newVertex);
}
lastVertex = newVertex;
}
if ((resultMap != null) && (lastVertex != null)) {
resultMap.put(END_VERTEX, lastVertex);
}
}
@Override
public void generateGraph(
Graph<V, E> veGraph, VertexFactory<V> vVertexFactory, Map<String, V> stringVMap) {
Map<Integer, V> intToNodeMap = new HashMap<Integer, V>();
for (Integer nodeID : selected.vertices.keySet()) {
V node = vVertexFactory.createVertex();
if (!veGraph.containsVertex(node)) veGraph.addVertex(node);
intToNodeMap.put(nodeID, node);
}
for (PajekArc arc : selected.arcs) {
V source = intToNodeMap.get(arc.source);
V target = intToNodeMap.get(arc.target);
E edge = null;
if (!veGraph.containsEdge(source, target)) edge = veGraph.addEdge(source, target);
else edge = veGraph.getEdge(source, target);
if (veGraph instanceof WeightedGraph)
((WeightedGraph) veGraph).setEdgeWeight(edge, arc.weight);
}
}