protected void stitchNeighbors(Set<Sector> neighbors, GeoPoint center) {
assert gatedAssertion(
neighbors.size() == 6
|| neighbors.size() == 5 && countDistinctGlobalSectors(neighbors) == 5);
if (!sector.equals(neighbors.iterator().next())) {
return;
}
Map<GeoPoint, GeoPoint> nextPoints = new HashMap<GeoPoint, GeoPoint>();
Sector second = null;
for (Sector s : neighbors) {
char vertex = s.getVertex(center);
Sector.Triangle cornerTriangle = s.getCornerTriangle(vertex);
GeoPoint[] geoPoints = cornerTriangle.getPoints(vertex);
nextPoints.put(geoPoints[1], geoPoints[2]);
if (second == null && countShared(s.points, sector.points) == 1) {
second = s;
}
}
assert gatedAssertion(second != null);
if (second != null) {
GeoPoint[] acre = new GeoPoint[nextPoints.size()];
GeoPoint point = nextPoints.values().iterator().next();
for (int idx = 0; idx < nextPoints.size(); idx++) {
assert !Arrays.asList(acre).contains(point);
acre[idx] = point;
point = nextPoints.get(point);
assert gatedAssertion(point != null);
if (point == null) {
return;
}
}
Sector[] others = new Sector[neighbors.size() - 2];
int idx = 0;
for (Sector s : neighbors) {
if (s != sector && s != second) {
others[idx++] = s;
}
}
Acre newAcre = new Acre(1, sector, second, Arrays.asList(others), center, acre);
CartographicElementView cartographicElementView = getFor(subdivisions);
for (Sector s : neighbors) {
char vertex = s.getVertex(center);
assert vertex == 'A' || vertex == 'B' || vertex == 'C';
Edge e = Edge.values()[vertex - 'A'];
List<Acre> vertexAcre =
cartographicElementView.get(
s.getSharedAcres(), CartographicElementView.Position.Vertex, e, false);
assert vertexAcre.size() == 1;
assert vertexAcre.get(0) == null;
vertexAcre.set(0, newAcre);
}
consume(newAcre);
}
}
private void stitchEdge(Edge edge, Neighbor neighbor) {
CartographicElementView elementView = getFor(subdivisions);
List<Sector.Triangle> myEdge =
elementView.get(sector.triangles, CartographicElementView.Position.Border, edge, false);
List<Sector.Triangle> urEdge =
elementView.get(
neighbor.sector.triangles,
CartographicElementView.Position.Border,
neighbor.edge,
neighbor.reverse);
List<Acre> sharedAcres =
elementView.get(
sector.getSharedAcres(), CartographicElementView.Position.Shared, edge, false);
makeAcres(myEdge, urEdge, neighbor, sharedAcres);
assert !sharedAcres.subList(1, sharedAcres.size() - 1).contains(null);
}
private int updateSharedAcres(
Edge edge, int count, Neighbor neighbor, CartographicElementView elementView) {
try {
List<Acre> myShared =
elementView.get(
sector.getSharedAcres(), CartographicElementView.Position.Shared, edge, false);
List<Acre> urShared =
elementView.get(
neighbor.sector.getSharedAcres(),
CartographicElementView.Position.Shared,
neighbor.edge,
true);
assert myShared.size() == urShared.size();
for (int i = 0, l = myShared.size(); i < l; i++) {
updateSharedAcre(myShared, urShared, i);
}
Acre[] myInner = sector.getInnerAcres();
Acre[] urInner = neighbor.sector.getInnerAcres();
List<Acre> myNear =
elementView.get(myInner, CartographicElementView.Position.Near, edge, false);
List<Acre> myBorder =
elementView.get(myInner, CartographicElementView.Position.Border, edge, false);
List<Acre> urBorder =
elementView.get(urInner, CartographicElementView.Position.Border, neighbor.edge, true);
count += addNeighbors(myShared.subList(1, myShared.size() - 1), myNear);
count += addNeighbors(myBorder, urBorder);
count += addNeighbors(myShared.subList(0, myShared.size() - 1), myBorder);
count += addNeighbors(myShared.subList(1, myShared.size()), myBorder);
} finally {
(sector.id < neighbor.sector.id ? neighbor.sector.sharedAcresLock : sector.sharedAcresLock)
.writeLock()
.unlock();
(sector.id < neighbor.sector.id ? sector.sharedAcresLock : neighbor.sector.sharedAcresLock)
.writeLock()
.unlock();
}
return count;
}