private void LocationProvider_LocationChanged(object?sender, Esri.ArcGISRuntime.Location.Location e)
{
Dispatcher.BeginInvoke((Action) delegate()
{
//Zoom in on first location fix
mapView.LocationDisplay.DataSource.LocationChanged -= LocationProvider_LocationChanged;
mapView.SetViewpointCenterAsync(e.Position, 5000);
mapView.LocationDisplay.AutoPanMode = Esri.ArcGISRuntime.UI.LocationDisplayAutoPanMode.Navigation;
});
}
private void LocationDisplay_LocationChanged(object sender, Esri.ArcGISRuntime.Location.Location e)
{
// Return if no location.
if (e.Position == null)
{
return;
}
// Unsubscribe; only want to zoom to location once.
((LocationDisplay)sender).LocationChanged -= LocationDisplay_LocationChanged;
RunOnUiThread(() => { _myMapView.SetViewpoint(new Viewpoint(e.Position, 10000)); });
}
private void LocationDisplay_LocationChanged(object sender, Esri.ArcGISRuntime.Location.Location e)
{
// Return if position is null; event is raised with null location after.
if (e.Position == null)
{
return;
}
// Unsubscribe from further events; only want to zoom to location once.
((LocationDisplay)sender).LocationChanged -= LocationDisplay_LocationChanged;
// Need to use this to interact with UI elements because this function is called from a background thread.
InvokeOnMainThread(() => _myMapView.SetViewpoint(new Viewpoint(e.Position, 100000)));
}
private void LocationDisplay_LocationChanged(object sender, Esri.ArcGISRuntime.Location.Location e)
{
// Return if position is null; event is called with null position when location display is turned on
if (e.Position == null) { return; }
// Unsubscribe to the event (only want to zoom once)
((LocationDisplay)sender).LocationChanged -= LocationDisplay_LocationChanged;
// Needed because the event is called from a background thread, but the code is manipulating UI
Dispatcher.Invoke(() =>
{
// Zoom to the location
MyMapView.SetViewpointAsync(new Viewpoint(e.Position, 100000));
});
}
private async void LocationDisplay_LocationChanged(object sender, Esri.ArcGISRuntime.Location.Location e)
{
// Return if position is null; event is raised with null location after
if (e.Position == null)
{
return;
}
// Unsubscribe from further events; only want to zoom to location once
((LocationDisplay)sender).LocationChanged -= LocationDisplay_LocationChanged;
// Need to use the dispatcher to interact with UI elements because this function is called from a background thread
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
MyMapView.SetViewpoint(new Viewpoint(e.Position, 100000));
});
}
private void LocationDataSourceOnLocationChanged(object sender, Esri.ArcGISRuntime.Location.Location e)
{
// Add any previous position to the history
if (_lastPosition != null)
{
try
{
_locationHistoryOverlay.Graphics.Add(new Graphic(_lastPosition));
}
catch
{
_fakeLocationDataSource.LocationChanged -= LocationDataSourceOnLocationChanged;
}
}
// Store the current position
_lastPosition = e.Position;
}
private void OnLocationChanged(object sender, EventArgs e)
{
if (double.IsNaN(m_gnssMonitor.Longitude) || double.IsNaN(m_gnssMonitor.Latitude))
{
return;
}
if (!double.IsNaN(m_gnssMonitor.Course))
{
lastCourse = m_gnssMonitor.Course;
}
DateTimeOffset?timestamp = null;
if (m_gnssMonitor.FixTime.HasValue)
{
timestamp = new DateTimeOffset(DateTime.UtcNow.Date.Add(m_gnssMonitor.FixTime.Value));
}
var location = new Esri.ArcGISRuntime.Location.Location(
timestamp: timestamp,
position: !double.IsNaN(m_gnssMonitor.Altitude) ? new MapPoint(m_gnssMonitor.Longitude, m_gnssMonitor.Latitude, m_gnssMonitor.Altitude, wgs84_ellipsoidHeight) : new MapPoint(m_gnssMonitor.Longitude, m_gnssMonitor.Latitude, SpatialReferences.Wgs84),
horizontalAccuracy: m_gnssMonitor.HorizontalError,
verticalAccuracy: m_gnssMonitor.VerticalError,
velocity: double.IsNaN(m_gnssMonitor.Speed) ? 0 : m_gnssMonitor.Speed * 0.51444444,
course: lastCourse,
!m_gnssMonitor.IsFixValid);
// Avoid raising additional location events if nothing changed
if (currentLocation == null ||
currentLocation.Position.X != location.Position.X ||
currentLocation.Position.Y != location.Position.Y ||
currentLocation.Position.Z != location.Position.Z ||
currentLocation.Course != location.Course ||
currentLocation.Velocity != location.Velocity ||
currentLocation.HorizontalAccuracy != location.HorizontalAccuracy ||
currentLocation.VerticalAccuracy != location.VerticalAccuracy ||
currentLocation.IsLastKnown != location.IsLastKnown ||
timestamp != location.Timestamp)
{
currentLocation = location;
UpdateLocation(currentLocation);
}
}