/** . */
public void testDirectedGraph() {
ListenableDirectedGraph<String, DefaultEdge> g =
new ListenableDirectedGraph<String, DefaultEdge>(DefaultEdge.class);
g.addVertex(V1);
g.addVertex(V2);
g.addVertex(V3);
g.addEdge(V1, V2);
ConnectivityInspector<String, DefaultEdge> inspector =
new ConnectivityInspector<String, DefaultEdge>(g);
g.addGraphListener(inspector);
assertEquals(false, inspector.isGraphConnected());
g.addEdge(V1, V3);
assertEquals(true, inspector.isGraphConnected());
}
private void findEdges(int startRow, int endRow) {
int gridSize = grid.size();
int sizeOfArrays = grid.get(0).size();
for (int i = startRow; i < endRow; i++) {
for (int j = 0; j < sizeOfArrays; j++) {
Position currentPosition = grid.get(i).get(j);
int current = currentPosition.value;
int min = current;
Position minP = currentPosition;
if (i - 1 >= 0) {
Position north = grid.get(i - 1).get(j);
if (north.value < min) {
min = north.value;
minP = north;
}
}
if (i - 1 >= 0 && j - 1 >= 0) {
Position northWest = grid.get(i - 1).get(j - 1);
if (northWest.value < min) {
min = northWest.value;
minP = northWest;
}
}
if (j - 1 >= 0) {
Position west = grid.get(i).get(j - 1);
if (west.value < min) {
min = west.value;
minP = west;
}
}
if (i + 1 < gridSize && j - 1 >= 0) {
Position southWest = grid.get(i + 1).get(j - 1);
if (southWest.value < min) {
min = southWest.value;
minP = southWest;
}
}
if (i + 1 < gridSize) {
Position south = grid.get(i + 1).get(j);
if (south.value < min) {
min = south.value;
minP = south;
}
}
if (i + 1 < gridSize && j + 1 < sizeOfArrays) {
Position southEast = grid.get(i + 1).get(j + 1);
if (southEast.value < min) {
min = southEast.value;
minP = southEast;
}
}
if (j + 1 < sizeOfArrays) {
Position east = grid.get(i).get(j + 1);
if (east.value < min) {
min = east.value;
minP = east;
}
}
if (i - 1 >= 0 && j + 1 < sizeOfArrays) {
Position northEast = grid.get(i - 1).get(j + 1);
if (northEast.value < min) {
min = northEast.value;
minP = northEast;
}
}
if (currentPosition.equals(minP)) {
} else {
synchronized (graph) {
graph.addEdge(currentPosition, minP);
}
}
}
}
}