/// <summary>
/// Create a (still unlinked) node halfway through the next section (so halfway between this
/// and the next junction. Needed specially for disambiguity.
/// </summary>
/// <param name="junctionNode">The junction node where we start</param>
/// <param name="tvnIndex">The TrackVectorNode index for the path</param>
/// <returns>An unlinked vectorNode at the midpoint.</returns>
private TrainpathVectorNode CreateHalfWayNode(TrainpathJunctionNode junctionNode, int tvnIndex)
{ // The idea here is to use all the code in traveller to make life easier.
// move the traveller halfway through the next vector section
Traveller traveller = junctionNode.PlaceTravellerAfterJunction(tvnIndex);
float distanceToTravel = traveller.TrackNodeLength / 2;
traveller.Move(distanceToTravel);
TrainpathVectorNode halfwayNode = new TrainpathVectorNode(junctionNode, traveller);
halfwayNode.DetermineOrientation(junctionNode, tvnIndex);
return(halfwayNode);
}
/// <summary>
/// Add a new vector path node at the location of nodeCandidate.
/// </summary>
/// <param name="lastNode">node that will be predecessor of the new nodeCandidate</param>
/// <param name="nodeCandidate">partial trainpath vector node describing the current mouse location</param>
/// <param name="isMainPath">Do we add the node to the main path or not</param>
/// <returns>The newly created vector node</returns>
public TrainpathVectorNode AddAdditionalVectorNode(TrainpathNode lastNode, TrainpathVectorNode nodeCandidate, bool isMainPath)
{
// we add a new activeNodeAsJunction
TrainpathVectorNode newNode = new TrainpathVectorNode(nodeCandidate);
newNode.DetermineOrientation(lastNode, newNode.TvnIndex);
// simple linking
if (isMainPath)
{
lastNode.NextMainTvnIndex = newNode.NextMainTvnIndex;
lastNode.NextMainNode = newNode;
newNode.PrevNode = lastNode;
}
else
{
lastNode.NextSidingTvnIndex = newNode.NextMainTvnIndex;
newNode.NextSidingTvnIndex = newNode.NextMainTvnIndex;
lastNode.NextSidingNode = newNode;
}
NetNodesAdded++;
return(newNode);
}