private async void UpdateIntersections()
{
try
{
Logging.LogMethodCall(ClassName);
var qf = new QueryParameters();
var gemStreet = GeometryEngine.Union(_selectedStreet.Value);
qf.Geometry = gemStreet;
qf.SpatialRelationship = SpatialRelationship.Touches;
var results = await FeatureSource.QueryFeaturesAsync(qf);
Intersections.Clear();
foreach (var result in results)
{
var streetName = result.Attributes[StreetNameField].ToString();
if (SelectedStreet.Key == streetName)
{
continue;
}
var loc = GeometryEngine.Intersections(result.Geometry, gemStreet);
if (loc[0] is MapPoint)
{
Intersections.Add(new Tuple <string, Geometry>(streetName, loc[0]));
}
else if (loc[0] is Multipoint)
{
Intersections.Add(new Tuple <String, Geometry>(streetName, ((Multipoint)loc[0]).Points[0]));
}
else if (loc[0] is Multipart)
{
var geom = ((Multipart)loc[0]).Parts[0].Points[0];
Intersections.Add(new Tuple <string, Geometry>(streetName, geom));
}
}
}
catch (Exception ex)
{
var message = "Error updating intersections";
ErrorHelper.OnError(MethodBase.GetCurrentMethod().DeclaringType.Name, message, ex);
Logging.LogMessage(Logging.LogType.Error, message, ex);
}
}
