private void SplitIntersectingRoads(Road road)
{
Vector3 roadStart = road.StartGrid.transform.position;
Vector3 roadEnd = road.EndGrid.transform.position;
List <GridRoadPair> intersectionInfoList = new List <GridRoadPair>();
IEnumerable <Road> otherRoads = SiteManager.Instance.roadManager.Roads
.Concat(SiteManager.Instance.roadManager.Arterials.Cast <Road>())
.Concat(SiteManager.Instance.trafficManager.trafficBuilder.EntryRoads.Cast <Road>())
.Concat(SiteManager.Instance.trafficManager.trafficBuilder.ExitRoads.Cast <Road>());
foreach (Road other in otherRoads)
{
if (other == road)
{
// Do not check for self-intersection
continue;
}
Vector3 otherStart = other.StartGrid.transform.position;
Vector3 otherEnd = other.EndGrid.transform.position;
Vector3 intersection;
if (VectorUtils.AreLineSegmentsIntersecting(roadStart, roadEnd, otherStart, otherEnd, out intersection))
{
intersectionInfoList.Add(new GridRoadPair(
SiteManager.Instance.gridManager.GetClosestGrid(intersection),
other));
}
}
intersectionInfoList.Sort((x, y) => Vector3.SqrMagnitude(x.grid.Coordinates - road.StartGrid.Coordinates)
.CompareTo(Vector3.SqrMagnitude(y.grid.Coordinates - road.StartGrid.Coordinates)));
Road thisRoad = road;
foreach (GridRoadPair intersectionInfo in intersectionInfoList)
{
Grid intersectionGrid = intersectionInfo.grid;
Road otherRoad = intersectionInfo.road;
IBigridTransform otherRoadHeadBT, otherRoadTailBT;
IBigridTransform thisRoadHeadBT, thisRoadTailBT;
otherRoad.Split(intersectionGrid, out otherRoadHeadBT, out otherRoadTailBT);
thisRoad.Split(intersectionGrid, out thisRoadHeadBT, out thisRoadTailBT);
Road otherRoadHead = (Road)otherRoadHeadBT;
Road otherRoadTail = (Road)otherRoadTailBT;
Road thisRoadHead = (Road)thisRoadHeadBT;
Road thisRoadTail = (Road)thisRoadTailBT;
/*if (thisRoadHead != null && thisRoadTail != null) {
* thisRoadHead.AddOutgoingRoad(thisRoadTail);
* thisRoadTail.AddIncomingRoad(thisRoadHead);
* }*/
// Establish links between this road's new head and other road's new tail
if (thisRoadHead != null && otherRoadTail != null)
{
thisRoadHead.AddOutgoingRoad(otherRoadTail);
otherRoadTail.AddIncomingRoad(thisRoadHead);
}
/*if (otherRoadHead != null && otherRoadTail != null) {
* otherRoadHead.AddOutgoingRoad(otherRoadTail);
* otherRoadTail.AddIncomingRoad(otherRoadHead);
* }*/
// Establish links between this road's new tail and other road's new head
if (otherRoadHead != null && thisRoadTail != null)
{
otherRoadHead.AddOutgoingRoad(thisRoadTail);
thisRoadTail.AddIncomingRoad(otherRoadHead);
}
if (thisRoadTail != null)
{
thisRoad = thisRoadTail;
}
}
}