/// <summary>
/// Perform routing using the RoutingCloudClient through a preset set of waypoints
/// </summary>
private async void RouteWaypoints()
{
// Create a set of preset waypoints to route through
PointShape startPoint = new PointShape(-10776986.85, 3908680.24);
PointShape waypoint1 = new PointShape(-10776836.12, 3912348.04);
PointShape waypoint2 = new PointShape(-10778917.01, 3909965.17);
PointShape endPoint = new PointShape(-10779631.80, 3915721.82);
// Show a loading graphic to let users know the request is running
loadingIndicator.IsRunning = true;
loadingLayout.IsVisible = true;
// Send the routing request
CloudRoutingGetRouteResult routingResult = await GetRoute(new Collection <PointShape> {
startPoint, waypoint1, waypoint2, endPoint
});
// Hide the loading graphic
loadingIndicator.IsRunning = false;
loadingLayout.IsVisible = false;
// Handle an exception returned from the service
if (routingResult.Exception != null)
{
await DisplayAlert("Error", routingResult.Exception.Message, "OK");
return;
}
//Draw the result on the map
DrawRoute(routingResult);
}
/// <summary>
/// Set options and perform routing using the RoutingCloudClient through a preset set of waypoints
/// </summary>
private async Task <CloudRoutingGetRouteResult> GetRoute(Collection <PointShape> waypoints)
{
// Set up options for the routing request
// Enable turn-by-turn so we get turn by turn instructions
CloudRoutingGetRouteOptions options = new CloudRoutingGetRouteOptions();
options.TurnByTurn = true;
CloudRoutingGetRouteResult route = await routingCloudClient.GetRouteAsync(waypoints, 3857, options);
return(route);
}
/// <summary>
/// Draw the result of a Cloud Routing request on the map
/// </summary>
private void DrawRoute(CloudRoutingGetRouteResult routingResult)
{
// Get the routing feature layer from the MapView
InMemoryFeatureLayer routingLayer = (InMemoryFeatureLayer)mapView.FindFeatureLayer("Routing Layer");
// Clear the previous features from the routing layer
routingLayer.InternalFeatures.Clear();
// Create a collection to hold the route segments. These include information like distance, duration, warnings, and instructions for turn-by-turn routing
List <CloudRoutingSegment> routeSegments = new List <CloudRoutingSegment>();
int index = 0;
// Add the route waypoints and route segments to the map
foreach (CloudRoutingWaypoint waypoint in routingResult.RouteResult.Waypoints)
{
Dictionary <string, string> columnValues = new Dictionary <string, string>();
// Get the order of the stops and label the point
// '0' represents the start/end point of the route for a round trip route, so we change the label to indicate that for readability
columnValues.Add("SequenceNumber", (index == 0 ? "Start Point" : "Stop " + index));
PointShape routeWaypoint = new PointShape(waypoint.Coordinate);
// Add the point to the map
routingLayer.InternalFeatures.Add(new Feature(routeWaypoint, columnValues));
// Increment the index for labeling purposes
index++;
}
foreach (CloudRoutingRoute route in routingResult.RouteResult.Routes)
{
routingLayer.InternalFeatures.Add(new Feature(route.Shape));
routeSegments.AddRange(route.Segments);
}
// Set the data source for the list box to the route segments
lsbRouteSegments.ItemsSource = routeSegments;
// Set the map extent to the newly displayed route
routingLayer.Open();
mapView.CurrentExtent = RectangleShape.ScaleUp(routingLayer.GetBoundingBox(), 20).GetBoundingBox();
routingLayer.Close();
mapView.Refresh();
}
