private void ExecuteMainPathFindingLoop(IRouteCalculateCommand command,
PathRoutes pathRoutes)
{
while (pathRoutes.PathList.Count > 0)
{
pathRoutes.TempPathList = new List <Route>(pathRoutes.PathList);
HandlePath(command, pathRoutes);
pathRoutes.PathList = new List <Route>(pathRoutes.TempPathList);
}
}
public List <Route> Calculate(IRouteCalculateCommand command)
{
var pathRoutes = new PathRoutes();
pathRoutes.PathList.Add(new Route {
PathNodes = new List <PathNode> {
new PathNode(command.StartPoint, 0)
}
});
ExecuteMainPathFindingLoop(command, pathRoutes);
return(pathRoutes.CompletedPaths);
}
private void HandlePath(IRouteCalculateCommand command,
PathRoutes pathRoutes)
{
foreach (var path in pathRoutes.PathList)
{
var point = path.PathNodes.Last().ChildPoint;
pathRoutes.Path = path;
foreach (var childPoint in point.Children)
{
pathRoutes.ChildPoint = childPoint;
HandlePointChild(command, pathRoutes);
}
}
}
private void HandleEndOfLine(IRouteCalculateCommand command,
PathRoutes pathRoutes)
{
var completedPath = new Route(pathRoutes.Path.PathNodes);
completedPath.PathNodes.Add(pathRoutes.ChildPoint);
pathRoutes.CompletedPaths.Add(completedPath);
if (!command.ForceLooping)
{
pathRoutes.TempPathList.Remove(pathRoutes.Path);
}
else
{
HandlePoint(pathRoutes);
}
}
private void HandlePointChild(IRouteCalculateCommand command,
PathRoutes pathRoutes)
{
if (command.ForceLoopingCount <= pathRoutes.CompletedPaths.Count && command.ForceLooping)
{
pathRoutes.TempPathList.Clear();
return;
}
if (pathRoutes.ChildPoint.ChildPoint.Name == command.EndPoint.Name)
{
HandleEndOfLine(command, pathRoutes);
}
else if (pathRoutes.ChildPoint.ChildPoint.Children.Count < 1 || pathRoutes.ChildPoint.ChildPoint.Name == command.StartPoint.Name)
{
pathRoutes.TempPathList.Remove(pathRoutes.Path);
}
else if (pathRoutes.Path.PathNodes.All(x => x.ChildPoint.Name != pathRoutes.ChildPoint.ChildPoint.Name) || command.ForceLooping)
{
HandlePoint(pathRoutes);
}
}
public IEnumerable <Route> GetRoutes(IRouteCalculateCommand command)
{
return(_pathCalculator.Calculate(command));
}
