GeoMapPopup.xaml.cs

using System.Threading.Tasks;
using Mapsui;
using Mapsui.Extensions;
using Mapsui.Projections;
using Mapsui.Tiling;
using NeuroAccessMaui.Services;
using Waher.Runtime.Geo;
 
namespace NeuroAccessMaui.UI.Popups.Password
{
    public partial class GeoMapPopup : BasePopup
    {
        public GeoMapPopup(GeoMapViewModel viewModel)
        {
            InitializeComponent();
            viewModel.MapControl = this.GeoMapControl;
            this.BindingContext = viewModel;
            this.GeoMapControl.Map.Navigator.RotationLock = true;
            this.GeoMapControl.Map?.Layers.Add(OpenStreetMap.CreateTileLayer());
        }
 
        public override Task OnAppearingAsync()
        {
            if (this.BindingContext is GeoMapViewModel viewModel && viewModel.InitialCoordinate is not null)
            {
                MPoint mercator = SphericalMercator.FromLonLat(viewModel.InitialCoordinate.Longitude, viewModel.InitialCoordinate.Latitude).ToMPoint();
                this.GeoMapControl.Map?.Navigator.CenterOn(mercator);
                this.GeoMapControl.Map?.Navigator.ZoomTo(1000);
            }
            return base.OnAppearingAsync();
        }
    }
}