/// <summary>
/// Tries to calculate a tree starting at the given location.
/// </summary>
public static Result <Tree> TryCalculateTree(this RouterBase router, Profile profile, RouterPoint origin, float max)
{
if (!router.SupportsAll(profile))
{
return(new Result <Tree>(string.Format("Profile {0} not supported.",
profile.Name)));
}
if (profile.Metric != ProfileMetric.TimeInSeconds)
{
return(new Result <Tree>(string.Format("Profile {0} not supported, only profiles with metric TimeInSeconds are supported.",
profile.Name)));
}
// get the weight handler.
var weightHandler = router.GetDefaultWeightHandler(profile);
var getFactor = router.GetDefaultGetFactor(profile);
// calculate isochrones.
var treeBuilder = new TreeBuilder(
new DykstraEdgeVisitor(router.Db.Network.GeometricGraph,
getFactor, origin.ToEdgePaths <float>(router.Db, weightHandler, true), max));
treeBuilder.Run();
return(new Result <Tree>(treeBuilder.Tree));
}