Add 3d tiles layer

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="ArcGIS.Samples.Add3dTilesLayer.Add3dTilesLayer"
             xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:esriUI="clr-namespace:Esri.ArcGISRuntime.Maui;assembly=Esri.ArcGISRuntime.Maui">
    <Grid>
        <esriUI:SceneView x:Name="MySceneView" />
    </Grid>
</ContentPage>

// Copyright 2024 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
// language governing permissions and limitations under the License.

using Esri.ArcGISRuntime.Mapping;

namespace ArcGIS.Samples.Add3dTilesLayer
{
    [ArcGIS.Samples.Shared.Attributes.Sample(
        name: "Add 3d tiles layer",
        category: "Layers",
        description: "Add a layer to visualize 3D tiles data that conforms to the OGC 3D Tiles specification.",
        instructions: "When loaded, the sample will display a scene with an `Ogc3DTilesLayer`. Pan around and zoom in to observe the scene of the `Ogc3DTilesLayer`. Notice how the layer's level of detail changes as you zoom in and out from the layer.",
        tags: new[] { "3d tiles", "OGC", "OGC API", "layers", "scene", "service" })]
    [ArcGIS.Samples.Shared.Attributes.OfflineData()]
    public partial class Add3dTilesLayer
    {
        // Create Uris for the elevation source and 3D tiles layer.
        private readonly Uri _elevationSourceUri = new Uri("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer");
        private readonly Uri _3dTilesLayerUri = new Uri("https://tiles.arcgis.com/tiles/ZQgQTuoyBrtmoGdP/arcgis/rest/services/Stuttgart/3DTilesServer/tileset.json");

        public Add3dTilesLayer()
        {
            InitializeComponent();
            _ = Initialize();
        }

        private async Task Initialize()
        {
            // Create a new elevation source from Terrain3D REST service.
            var elevationSource = new ArcGISTiledElevationSource(_elevationSourceUri);

            // Create a new 3D tiles layer from a REST endpoint.
            var layer = new Ogc3DTilesLayer(_3dTilesLayerUri);

            // Create a new scene with a dark gray basemap.
            var scene = new Scene(BasemapStyle.ArcGISDarkGray);

            // Add the elevation source to the scene.
            scene.BaseSurface.ElevationSources.Add(elevationSource);

            // Add the 3D tiles layer to the scene.
            scene.OperationalLayers.Add(layer);

            // Set the scene on the SceneView to visualize the 3D tiles layer.
            MySceneView.Scene = scene;

            // Create a camera with an initial viewpoint.
            // Camera constructor parameters: latitude, longitude, altitude, heading, pitch, and roll.
            var sceneCamera = new Camera(48.8418, 9.1536, 1325.0, 48.35, 57.84, 0.0);

            // Set the viewpoint with the camera.
            await MySceneView.SetViewpointCameraAsync(sceneCamera);
        }
    }
}