private void ZoomToExtent()
{
var vm = DataContext as PatrolDetailsViewModel;
if (vm == null)
{
return;
}
ObservableCollection <Graphic> layerCol = vm.GetLayerObservable();
if (layerCol.Count == 0)
{
return;
}
List <double> Xs = new List <double>();
List <double> Ys = new List <double>();
for (int i = 0; i < layerCol.Count; i++)
{
if (!(layerCol[i].Geometry is Esri.ArcGISRuntime.Geometry.Polygon))
{
Xs.Add(((MapPoint)layerCol[i].Geometry).X);
Ys.Add(((MapPoint)layerCol[i].Geometry).Y);
}
}
if (layerCol.Count > 1 && Xs.Count > 0 && Ys.Count > 0)
{
Envelope myEnvelope = new Envelope(Xs.Min(), Ys.Min(), Xs.Max(), Ys.Max(), new SpatialReference(4326));
EsriMapView.SetViewAsync(myEnvelope.GetCenter(), 70000);
}
else
{
if (!(layerCol[0].Geometry is Esri.ArcGISRuntime.Geometry.Polygon))
{
ZoomOnMap(((MapPoint)layerCol[0].Geometry).Y, ((MapPoint)layerCol[0].Geometry).X, 50000);
}
}
}
private void btnZoomOut_Click(object sender, RoutedEventArgs e)
{
EsriMapView.ZoomAsync(0.9);
}
private void ZoomOnMap(double Latitude, double Longitude, int Scale)
{
EsriMapView.SetView(new MapPoint(Longitude, Latitude, new SpatialReference(4326)), Scale);
}
private void btnZoomIn_Click(object sender, RoutedEventArgs e)
{
EsriMapView.ZoomAsync(1.1);
}