/// <summary>
/// Generate two child RoadNetworks by recombining halves of two parent RoadNetworks.
/// </summary>
/// <param name="parent1">The first parent RoadNetwork</param>
/// <param name="parent2">The second parent RoadNetwork</param>
/// <param name="child1">The first child RoadNetwork</param>
/// <param name="child2">The second child RoadNetwork</param>
public static void Conjugate(RoadNetwork parent1, RoadNetwork parent2, out RoadNetwork child1, out RoadNetwork child2)
{
Cut(parent1);
Cut(parent2);
List<Vertex> startVertexPartition1 = new List<Vertex>();
List<Vertex> endVertexPartition1 = new List<Vertex>();
List<Vertex> startVertexPartition2 = new List<Vertex>();
List<Vertex> endVertexPartition2 = new List<Vertex>();
List<Edge> startEdgePartition1 = new List<Edge>();
List<Edge> endEdgePartition1 = new List<Edge>();
List<Edge> startEdgePartition2 = new List<Edge>();
List<Edge> endEdgePartition2 = new List<Edge>();
List<Edge> brokenEdgePartition1 = new List<Edge>();
List<Edge> brokenEdgePartition2 = new List<Edge>();
parent1.PartitionVertices(startVertexPartition1, endVertexPartition1);
parent2.PartitionVertices(startVertexPartition2, endVertexPartition2);
parent1.PartitionEdges(startEdgePartition1, endEdgePartition1, brokenEdgePartition1);
parent2.PartitionEdges(startEdgePartition2, endEdgePartition2, brokenEdgePartition2);
child1 = new RoadNetwork(parent1.Map);
child2 = new RoadNetwork(parent2.Map);
child1.CopyVerticesUnique(startVertexPartition1);
child1.CopyEdges(startEdgePartition1);
int endIndex1 = child1.CopyVerticesUnique(endVertexPartition2);
child1.CopyEdges(endEdgePartition2);
child2.CopyVerticesUnique(startVertexPartition2);
child2.CopyEdges(startEdgePartition2);
int endIndex2 = child2.CopyVerticesUnique(endVertexPartition1);
child2.CopyEdges(endEdgePartition1);
ShuffleEdges(brokenEdgePartition1);
ShuffleEdges(brokenEdgePartition2);
int nEdges = Math.Max(brokenEdgePartition1.Count, brokenEdgePartition2.Count);
for (int i = 0; i < nEdges; i++)
{
Vertex start1;
Vertex end1;
Vertex start2;
Vertex end2;
GetStartAndEnd(brokenEdgePartition1, i, endVertexPartition1, startVertexPartition1, out start1, out end1);
GetStartAndEnd(brokenEdgePartition2, i, endVertexPartition2, startVertexPartition2, out start2, out end2);
if (start1 != null && start2 != null)
{
StepMutator.StepPath(child1, start2.Copy, end1.Copy);
StepMutator.StepPath(child2, start1.Copy, end2.Copy);
}
}
child1.SetEnd(endIndex1);
child2.SetEnd(endIndex2);
}