Create terrain from local tile package

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// Copyright 2019 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 ArcGIS.Samples.Managers;
using Esri.ArcGISRuntime.Mapping;

namespace ArcGIS.WPF.Samples.CreateTerrainSurfaceTilePackage
{
    [ArcGIS.Samples.Shared.Attributes.Sample(
        name: "Create terrain from local tile package",
        category: "Scene",
        description: "Set the terrain surface with elevation described by a local tile package.",
        instructions: "When loaded, the sample will show a scene with a terrain surface applied. Pan and zoom to explore the scene and observe how the terrain surface allows visualizing elevation differences.",
        tags: new[] { "3D", "LERC", "elevation", "surface", "terrain", "tile cache" })]
    [ArcGIS.Samples.Shared.Attributes.OfflineData("52ca74b4ba8042b78b3c653696f34a9c")]
    public partial class CreateTerrainSurfaceTilePackage
    {
        public CreateTerrainSurfaceTilePackage()
        {
            InitializeComponent();
            Initialize();
        }

        private void Initialize()
        {
            // Create the scene.
            MySceneView.Scene = new Scene(BasemapStyle.ArcGISImageryStandard);

            // Get the path to the elevation tile package.
            string packagePath = DataManager.GetDataFolder("52ca74b4ba8042b78b3c653696f34a9c", "MontereyElevation.tpkx");

            // Create the elevation source from the tile cache.
            TileCache elevationCache = new TileCache(packagePath);
            ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource(elevationCache);

            // Create a surface to display the elevation source.
            Surface elevationSurface = new Surface();

            // Add the elevation source to the surface.
            elevationSurface.ElevationSources.Add(elevationSource);

            // Add the surface to the scene.
            MySceneView.Scene.BaseSurface = elevationSurface;

            // Set an initial camera viewpoint.
            Camera camera = new Camera(36.525, -121.80, 300.0, 180, 80.0, 0.0);
            MySceneView.SetViewpointCamera(camera);
        }
    }
}