//Thread safe initialization of the geocoder
private static async Task InitGeocoderAsync()
{
lock (LockInstance)
{
if (locator != null)
{
return;
}
if (initializeTask == null)
{
string path = System.IO.Path.Combine(ProvisionDataHelper.GetDataFolder(), "Geocoder", "CampusRooms.loc");
var task = LocatorTask.CreateAsync(new Uri(path, UriKind.RelativeOrAbsolute)); //Using relative path makes the create never complete.
initializeTask = task.ContinueWith(t =>
{
if (t.IsFaulted)
{
throw t.Exception;
}
lock (LockInstance)
locator = t.Result;
});
}
}
await initializeTask.ConfigureAwait(false);
}
/// <summary>
/// Initiates offline data provisioning on first run
/// </summary>
/// <returns></returns>
private async Task ProvisionDataAsync()
{
await ProvisionDataHelper.GetDataAsync((status) =>
{
UpdateLoadStatus(status);
});
UpdateLoadStatus("");
}
//Thread safe initialization of the route task
private static Task <RouteTask> InitRouterAsync()
{
if (initializeTask == null)
{
string path = System.IO.Path.Combine(ProvisionDataHelper.GetDataFolder(), "Network", "IndoorNavigation.geodatabase");
initializeTask = RouteTask.CreateAsync(path, "Transportation_ND");
}
return(initializeTask);
}
/// <summary>
/// Initializes a 2D Map of the campus using the locally stored data
/// This map works offline, but if online, is also supplemented by a world map for better reference
/// </summary>
/// <returns></returns>
private async Task InitializeMap()
{
Basemap basemap = Basemap.CreateTopographic();
var layer = new ArcGISVectorTiledLayer(new Uri(Path.Combine(ProvisionDataHelper.GetDataFolder(), "Basemap/CampusBasemap.vtpk"), UriKind.RelativeOrAbsolute));
await layer.LoadAsync();
basemap.BaseLayers.Add(layer);
Map = new Map(SpatialReferences.WebMercator)
{
Basemap = basemap,
InitialViewpoint = new Viewpoint(new MapPoint(-13046209, 4036456, SpatialReferences.WebMercator), 30000),
MaxScale = 160,
MinScale = 30000
};
await Map.LoadAsync();
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Map)));
}