public Node split(EmbeddedGraph embeddedGraph, Edge edge) {
Graph originalGraph = embeddedGraph.getGraph();
Node newNode = originalGraph.createDummyNode();
originalGraph.removeEdge(edge);
List<Edge> newEdges = ListSequence.fromList(new ArrayList<Edge>());
ListSequence.fromList(newEdges).addElement(originalGraph.connect(edge.getSource(), newNode));
ListSequence.fromList(newEdges).addElement(originalGraph.connect(newNode, edge.getTarget()));
MapSequence.fromMap(mySplittedEdges).put(edge, newEdges);
List<Face> facesToProcess = ListSequence.fromList(new ArrayList<Face>());
ListSequence.fromList(facesToProcess)
.addSequence(ListSequence.fromList(embeddedGraph.getAdjacentFaces(edge)));
for (Face face : ListSequence.fromList(facesToProcess)) {
List<Dart> darts = face.getDarts();
int pos = 0;
while (ListSequence.fromList(darts).getElement(pos).getEdge() != edge) {
pos++;
}
Dart dartToReplace = ListSequence.fromList(darts).getElement(pos);
for (Edge newEdge : ListSequence.fromList(newEdges)) {
if (ListSequence.fromList(newEdge.getAdjacentNodes()).contains(dartToReplace.getSource())) {
embeddedGraph.setDart(face, pos, new Dart(newEdge, dartToReplace.getSource()));
}
}
for (Edge newEdge : ListSequence.fromList(newEdges)) {
if (ListSequence.fromList(newEdge.getAdjacentNodes()).contains(dartToReplace.getTarget())) {
embeddedGraph.insertDart(face, pos + 1, new Dart(newEdge, newNode));
}
}
}
return newNode;
}
protected GraphLayout doLayoutCopy(LayoutInfo patchInfo) {
Graph graph = patchInfo.getGraph();
final Map<Node, Integer> components = ConnectivityComponents.getComponents(graph);
int numComponents = 0;
for (Node node : ListSequence.fromList(graph.getNodes())) {
numComponents = Math.max(numComponents, MapSequence.fromMap(components).get(node));
}
numComponents++;
List<LayoutInfoCopier> copiers =
ListSequence.fromList(new ArrayList<LayoutInfoCopier>(numComponents));
List<GraphLayout> subgraphLayouts =
ListSequence.fromList(new ArrayList<GraphLayout>(numComponents));
for (int num = 0; num < numComponents; num++) {
LayoutInfoCopier copier = new LayoutInfoCopier(patchInfo);
ListSequence.fromList(copiers).addElement(copier);
final int curComponent = num;
copier.copySubgraph(
new Filter<INode>() {
public boolean accept(INode node) {
Node myNode = ((Node) node);
return (Integer) MapSequence.fromMap(components).get(myNode) == curComponent;
}
});
LayoutInfo subgraphInfo = copier.getLayoutInfoCopy();
ListSequence.fromList(subgraphLayouts).addElement(doLayoutConnectedGraph(subgraphInfo));
}
List<Rectangle> subgraphLayoutRects =
ListSequence.fromList(new ArrayList<Rectangle>(numComponents));
for (GraphLayout layout : ListSequence.fromList(subgraphLayouts)) {
ListSequence.fromList(subgraphLayoutRects).addElement(layout.getContainingRectangle());
}
List<Dimension> subgraphLayoutShifts = getSubgraphLayoutShifts(subgraphLayoutRects);
GraphLayout graphLayout = GraphLayoutFactory.createGraphLayout(graph);
for (int num = 0; num < numComponents; num++) {
LayoutInfoCopier copier = ListSequence.fromList(copiers).getElement(num);
GraphLayout layout = ListSequence.fromList(subgraphLayouts).getElement(num);
Dimension shift = ListSequence.fromList(subgraphLayoutShifts).getElement(num);
for (INode node : SetSequence.fromSet(copier.getCopiedNodes())) {
Rectangle rect = layout.getNodeLayout(copier.getNodeCopy(node));
rect.translate(shift.width, shift.height);
graphLayout.setLayoutFor(node, rect);
}
for (IEdge edge : SetSequence.fromSet(copier.getCopiedEdges())) {
List<Point> path = layout.getEdgeLayout(copier.getEdgeCopy(edge));
for (Point point : ListSequence.fromList(path)) {
point.translate(shift.width, shift.height);
}
graphLayout.setLayoutFor(edge, path);
if (SetSequence.fromSet(patchInfo.getLabeledEdges()).contains(edge)) {
Rectangle rect = layout.getLabelLayout(copier.getEdgeCopy(edge));
rect.translate(shift.width, shift.height);
graphLayout.setLabelLayout(edge, rect);
}
}
}
return graphLayout;
}
private void restoreEdge(EmbeddedGraph embeddedGraph, Edge removedEdge) {
MapSequence.fromMap(mySplittedEdges)
.put(removedEdge, ListSequence.fromList(new ArrayList<Edge>()));
Graph graph = embeddedGraph.getGraph();
DualGraph dualGraph = new DualGraph(embeddedGraph);
List<Node> newNodes = ListSequence.fromList(new ArrayList<Node>());
for (Node node : ListSequence.fromList(removedEdge.getAdjacentNodes())) {
Node newNode = dualGraph.createDummyNode();
for (Edge nodeEdge : ListSequence.fromList(node.getEdges(Edge.Direction.BOTH))) {
for (Face face : ListSequence.fromList(embeddedGraph.getAdjacentFaces(nodeEdge))) {
dualGraph.connect(newNode, MapSequence.fromMap(dualGraph.getNodesMap()).get(face));
}
}
ListSequence.fromList(newNodes).addElement(newNode);
}
List<Edge> path =
ShortestPath.getPath(
dualGraph,
ListSequence.fromList(newNodes).getElement(0),
ListSequence.fromList(newNodes).getElement(1),
Edge.Direction.BOTH);
List<Node> nodePath = ListSequence.fromList(new ArrayList<Node>());
List<Face> facePath = ListSequence.fromList(new ArrayList<Face>());
ListSequence.fromList(nodePath)
.addElement(ListSequence.fromList(removedEdge.getAdjacentNodes()).getElement(0));
Node cur = ListSequence.fromList(newNodes).getElement(0);
for (Edge edge : ListSequence.fromList(path)) {
Edge realEdge = MapSequence.fromMap(dualGraph.getEdgesMap()).get(edge);
if (embeddedGraph.getAdjacentFaces(realEdge) != null) {
ListSequence.fromList(nodePath)
.addElement(
split(embeddedGraph, MapSequence.fromMap(dualGraph.getEdgesMap()).get(edge)));
}
cur = edge.getOpposite(cur);
Face curFace = MapSequence.fromMap(dualGraph.getFacesMap()).get(cur);
if (curFace != null) {
ListSequence.fromList(facePath).addElement(curFace);
}
}
ListSequence.fromList(nodePath)
.addElement(ListSequence.fromList(removedEdge.getAdjacentNodes()).getElement(1));
for (int i = 0; i < ListSequence.fromList(nodePath).count() - 1; i++) {
Edge newEdge =
graph.connect(
ListSequence.fromList(nodePath).getElement(i),
ListSequence.fromList(nodePath).getElement(i + 1));
ListSequence.fromList(MapSequence.fromMap(mySplittedEdges).get(removedEdge))
.addElement(newEdge);
splitFace(embeddedGraph, ListSequence.fromList(facePath).getElement(i), newEdge);
}
}
public EmbeddedGraph find(Graph graph) {
mySplittedEdges = MapSequence.fromMap(new HashMap<Edge, List<Edge>>());
EmbeddedGraph embeddedGraph = new EmbeddedGraph(graph);
List<Edge> removed = ListSequence.fromList(new ArrayList<Edge>());
Face outerFace = getOuterTreeFace(graph, removed);
for (Edge edge : ListSequence.fromList(removed)) {
graph.removeEdge(edge);
}
embeddedGraph.addFace(outerFace);
embeddedGraph.setOuterFace(outerFace);
for (Edge removedEdge : ListSequence.fromList(removed)) {
this.restoreEdge(embeddedGraph, removedEdge);
CheckEmbeddedGraph.checkEmbeddedGraph(embeddedGraph, false);
}
mergeEdges();
return embeddedGraph;
}
public static void getRepresentation(
EmbeddedGraph embeddedGraph,
Set<Edge> edgesToBeStraight,
Map<Dart, Integer> bends,
Map<Dart, Integer> angles) {
Graph graph = embeddedGraph.getGraph();
Graph network = new Graph();
Node center = network.createNode();
Map<Edge, Integer> low = MapSequence.fromMap(new HashMap<Edge, Integer>());
Map<Edge, Integer> capacity = MapSequence.fromMap(new HashMap<Edge, Integer>());
Map<Edge, Integer> cost = MapSequence.fromMap(new HashMap<Edge, Integer>());
Map<Node, Node> nodeMap = MapSequence.fromMap(new HashMap<Node, Node>());
for (Node node : ListSequence.fromList(graph.getNodes())) {
Node networkNode = network.createNode();
MapSequence.fromMap(nodeMap).put(node, networkNode);
Edge edge = network.connect(center, networkNode);
MapSequence.fromMap(low).put(edge, 4);
MapSequence.fromMap(capacity).put(edge, MapSequence.fromMap(low).get(edge));
MapSequence.fromMap(cost).put(edge, 0);
}
Map<Face, Node> faceMap = MapSequence.fromMap(new HashMap<Face, Node>());
for (Face face : ListSequence.fromList(embeddedGraph.getFaces())) {
Node node = network.createNode();
MapSequence.fromMap(faceMap).put(face, node);
Edge edge = network.connect(node, center);
if (embeddedGraph.isOuterFace(face)) {
MapSequence.fromMap(low).put(edge, 2 * ListSequence.fromList(face.getDarts()).count() + 4);
} else {
MapSequence.fromMap(low).put(edge, 2 * ListSequence.fromList(face.getDarts()).count() - 4);
}
MapSequence.fromMap(capacity).put(edge, MapSequence.fromMap(low).get(edge));
MapSequence.fromMap(cost).put(edge, 0);
}
Map<Dart, Edge> dartBendMap = MapSequence.fromMap(new HashMap<Dart, Edge>());
Map<Dart, Edge> dartAngleMap = MapSequence.fromMap(new HashMap<Dart, Edge>());
for (Face face : ListSequence.fromList(embeddedGraph.getFaces())) {
Node faceNode = MapSequence.fromMap(faceMap).get(face);
for (Dart dart : ListSequence.fromList(face.getDarts())) {
Edge edge = network.connect(MapSequence.fromMap(nodeMap).get(dart.getSource()), faceNode);
MapSequence.fromMap(dartAngleMap).put(dart, edge);
MapSequence.fromMap(low).put(edge, 1);
MapSequence.fromMap(capacity).put(edge, 4);
MapSequence.fromMap(cost).put(edge, 0);
List<Face> faces = embeddedGraph.getAdjacentFaces(dart.getEdge());
Node oppositeFaceNode;
if (ListSequence.fromList(faces).getElement(0) == face) {
oppositeFaceNode =
MapSequence.fromMap(faceMap).get(ListSequence.fromList(faces).getElement(1));
} else {
oppositeFaceNode =
MapSequence.fromMap(faceMap).get(ListSequence.fromList(faces).getElement(0));
}
edge = network.connect(faceNode, oppositeFaceNode);
MapSequence.fromMap(dartBendMap).put(dart, edge);
MapSequence.fromMap(low).put(edge, 0);
if (SetSequence.fromSet(edgesToBeStraight).contains(dart.getEdge())) {
MapSequence.fromMap(capacity).put(edge, 0);
} else {
MapSequence.fromMap(capacity).put(edge, Integer.MAX_VALUE / 2);
}
MapSequence.fromMap(cost).put(edge, 1);
}
}
if (SHOW_INFO > 0) {
System.out.println("Constructed network:");
for (Node node : ListSequence.fromList(graph.getNodes())) {
System.out.println("for node " + node + ": " + MapSequence.fromMap(nodeMap).get(node));
}
for (Face face : ListSequence.fromList(embeddedGraph.getFaces())) {
System.out.println("for face " + face + ": " + MapSequence.fromMap(faceMap).get(face));
}
for (Edge edge : ListSequence.fromList(network.getEdges())) {
System.out.println(
"edge "
+ edge
+ ": low = "
+ MapSequence.fromMap(low).get(edge)
+ ", cap = "
+ MapSequence.fromMap(capacity).get(edge)
+ ", cost = "
+ MapSequence.fromMap(cost).get(edge));
}
}
Map<Edge, Integer> circulation =
MinCostCirculation.getCirculation(network, low, capacity, cost);
for (Dart dart : SetSequence.fromSet(MapSequence.fromMap(dartBendMap).keySet())) {
MapSequence.fromMap(bends)
.put(
dart,
MapSequence.fromMap(circulation).get(MapSequence.fromMap(dartBendMap).get(dart)));
MapSequence.fromMap(angles)
.put(
dart,
MapSequence.fromMap(circulation).get(MapSequence.fromMap(dartAngleMap).get(dart)));
}
if (SHOW_INFO > 0) {
System.out.println("bends: " + bends);
System.out.println("angles: " + angles);
}
}