public void UpdateZoom(float newZoom)
{
if (Camera.Zoom != newZoom)
{
MoveCamera(CameraUpdate.ZoomToZoom(newZoom));
}
}
void OnCameraPositionChanged(object sender, GMSCameraEventArgs e)
{
float maxZoom = Google.Maps.Constants.MaxZoomLevel;
if (osmLayer.Map != null || ocmLayer.Map != null)
{
maxZoom = 17.3f;
}
if (e.Position.Zoom > maxZoom)
{
mapView.MoveCamera(CameraUpdate.ZoomToZoom(maxZoom));
}
}
protected override void OnElementChanged(ElementChangedEventArgs <TripMapView> e)
{
base.OnElementChanged(e);
if (e.NewElement == null || e.OldElement != null)
{
return;
}
if (_control == null)
{
_control = new MapView
{
MapStyle = MapStyle.FromJson(Constants.MapStyleJson, null),
};
_control.MoveCamera(CameraUpdate.ZoomToZoom(13));
}
SetNativeControl(_control);
}
public void cameraAutoZoomAndReposition(Event[] eventMarkers)
{
double minimumLongitudeInGoogle = 180.0f;
double maximumLongitudeInGoogle = -180.0f;
double minimumLatitudeInGoogle = 90.0f;
double maximumLatitudeInGoogle = -90.0f;
foreach (Event currentMarker in eventMarkers)
{
maximumLongitudeInGoogle = Math.Max(maximumLongitudeInGoogle, currentMarker.Location.Longitude);
minimumLongitudeInGoogle = Math.Min(minimumLongitudeInGoogle, currentMarker.Location.Longitude);
maximumLatitudeInGoogle = Math.Max(maximumLatitudeInGoogle, currentMarker.Location.Latitude);
minimumLatitudeInGoogle = Math.Min(minimumLatitudeInGoogle, currentMarker.Location.Latitude);
}
CLLocationCoordinate2D northWestBound = new CLLocationCoordinate2D(maximumLatitudeInGoogle, minimumLongitudeInGoogle);
CLLocationCoordinate2D southEastBound = new CLLocationCoordinate2D(minimumLatitudeInGoogle, maximumLongitudeInGoogle);
mapView.MoveCamera(CameraUpdate.FitBounds(new CoordinateBounds(northWestBound, southEastBound)));
float desiredZoomlevel = (float)(getZoomLevel(minimumLatitudeInGoogle, maximumLatitudeInGoogle, minimumLongitudeInGoogle, maximumLongitudeInGoogle, mapViewOutlet.Frame.Size.Width, mapViewOutlet.Frame.Size.Height));
mapView.MoveCamera(CameraUpdate.ZoomToZoom(desiredZoomlevel));
}
protected override void OnElementChanged(ElementChangedEventArgs <TripsClusterMapView> e)
{
base.OnElementChanged(e);
if (e.NewElement == null)
{
return;
}
if (e.OldElement != null)
{
var mapView = e.OldElement;
mapView.Trips.CollectionChanged -= Trips_CollectionChanged;
}
var newMapView = e.NewElement;
newMapView.Trips.CollectionChanged += Trips_CollectionChanged;
if (_control == null)
{
_control = new MapView
{
MapStyle = MapStyle.FromJson(Constants.MapStyleJson, null),
};
_control.MoveCamera(CameraUpdate.ZoomToZoom(0));
}
if (_clusterManager == null)
{
_clusterManager = new GMUClusterManager(_control,
new GMUNonHierarchicalDistanceBasedAlgorithm(),
new GMUDefaultClusterRenderer(_control, new GMUDefaultClusterIconGenerator()));
}
SetNativeControl(_control);
GenerateClusters(newMapView);
}