/// <summary>
/// Starts animating the location.
/// </summary>
private void UpdateLocation()
{
if (Map != null && Map.SpatialReference != null && GeoCoordinate != null && GeoCoordinate != GeoCoordinate.Unknown)
{
MapPoint newLocation = new ESRI.ArcGIS.Client.Geometry.MapPoint(GeoCoordinate.Longitude, GeoCoordinate.Latitude)
{
SpatialReference = new SpatialReference(4326)
};
if (!Map.SpatialReference.Equals(newLocation.SpatialReference))
{
if (WebMercatorSR.Equals(Map.SpatialReference))
{
newLocation = merc.FromGeographic(newLocation) as MapPoint;
}
else
{
if (ProjectionService != null)
{
if (!ProjectionService.IsBusy)
{
var geom = newLocation;
EventHandler <Tasks.GraphicsEventArgs> handler = null;
handler = (a, b) =>
{
(a as IProjectionService).ProjectCompleted -= handler;
if (b.Results != null && b.Results.Count > 0 && b.Results[0].Geometry is MapPoint)
{
BeginAnimateLocation(b.Results[0].Geometry as MapPoint);
}
};
ProjectionService.ProjectCompleted += handler;
ProjectionService.ProjectAsync(new Graphic[] { new Graphic()
{
Geometry = geom
} }, Map.SpatialReference);
}
else
{
EventHandler <Tasks.GraphicsEventArgs> handler = null;
handler = (a, b) =>
{
ProjectionService.ProjectCompleted -= handler;
UpdateLocation(); //Try again
};
ProjectionService.ProjectCompleted += handler; //Wait for task to complete
}
}
return; //Wait for projection to complete
}
}
BeginAnimateLocation(newLocation);
}
}