View content beneath terrain surface

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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 Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.Portal;
using System.Threading.Tasks;

namespace ArcGIS.WinUI.Samples.ViewContentBeneathSurface
{
    [ArcGIS.Samples.Shared.Attributes.Sample(
        name: "View content beneath terrain surface",
        category: "Scene",
        description: "See through terrain in a scene and move the camera underground.",
        instructions: "The sample loads a scene with underground features. Pan and zoom to explore the scene. Observe how the opacity of the base surface is reduced and the navigation constraint is removed, allowing you to pan and zoom through the base surface.",
        tags: new[] { "3D", "subsurface", "underground", "utilities" })]
    public partial class ViewContentBeneathSurface
    {
        public ViewContentBeneathSurface()
        {
            InitializeComponent();
            _ = Initialize();
        }

        private async Task Initialize()
        {
            // Load the item from ArcGIS Online.
            PortalItem webSceneItem = await PortalItem.CreateAsync(await ArcGISPortal.CreateAsync(), "91a4fafd747a47c7bab7797066cb9272");

            // Load the web scene from the item.
            Scene webScene = new Scene(webSceneItem);

            // Show the web scene in the view.
            MySceneView.Scene = webScene;

            // Set the view properties to enable underground navigation.
            // Note: the scene in this sample sets these properties automatically.
            // Scenes authored in this way will be enabled for underground navigation without
            // changing the navigation constraint manually.
            MySceneView.Scene.BaseSurface.NavigationConstraint = NavigationConstraint.None;
            MySceneView.Scene.BaseSurface.Opacity = .6;
        }
    }
}