private bool GetMultiStagePath(Path edgePath, MsmtRectilinearPath shortestPathRouter,
List <VisibilityVertex> sourceVertices, List <VisibilityVertex> targetVertices, bool lastChance)
{
var waypointVertices = PortManager.FindWaypointVertices(edgePath.EdgeGeometry.Waypoints);
var paths = shortestPathRouter.GetPath(sourceVertices, waypointVertices, targetVertices);
if (paths == null)
{
if (!lastChance)
{
return(false);
}
// Get each stage individually. They won't necessarily be ideal but this should be very rare and
// with at least one stage being "forced" through obstacles, the path is not good anyway.
foreach (var stagePath in this.edgeGeomsToSplittedEdgePaths[edgePath.EdgeGeometry])
{
var stageGeom = stagePath.EdgeGeometry;
GetSingleStagePath(stagePath, shortestPathRouter, this.PortManager.FindVertices(stageGeom.SourcePort),
this.PortManager.FindVertices(stageGeom.TargetPort), lastChance: true);
}
return(true);
}
// Record the path for each state.
var pathsEnum = paths.GetEnumerator();
foreach (var stagePath in this.edgeGeomsToSplittedEdgePaths[edgePath.EdgeGeometry])
{
pathsEnum.MoveNext();
stagePath.PathPoints = pathsEnum.Current;
}
return(true);
}