Display a web scene

Learn how to create and display a scene from a web scene stored in ArcGIS.

display a web scene

This tutorial shows you how to create and display a scene from a web scene. All web scenes are stored in ArcGIS with a unique item ID. You will access an existing web scene by item ID and display its layers. The web scene contains feature layers for the Santa Monica Mountains in California.

Prerequisites

Before starting this tutorial, you should:

  • Have an ArcGIS account and an API key to access ArcGIS services. If you don't have an account, sign up for free.
  • Ensure your development environment meets the system requirements.

Optionally, you may want to install the ArcGIS Maps SDK for .NET to get access to project templates in Visual Studio (Windows only) and offline copies of the NuGet packages.

Steps

Open the Visual Studio solution

  1. To start the tutorial, complete the Display a scene tutorial or download and unzip the solution.

  2. Open the .sln file in Visual Studio.

  3. If you downloaded the solution project, set your API key.

Update the tutorial name used in the project (optional)

The Visual Studio solution, project, and the namespace for all classes currently use the name DisplayAScene. Follow the steps below if you prefer the name to reflect the current tutorial. These steps are not required, your code will still work if you keep the original name.

Get the web scene item ID

You can use ArcGIS tools to create and view web scenes. Use the Scene Viewer to identify the web scene item ID. This item ID will be used later in the tutorial.

  1. Go to the LA Trails and Parks web scene in the Scene Viewer in ArcGIS Online. This web scene displays trails, trailheads and parks in the Santa Monica Mountains.
  2. Make a note of the item ID at the end of the browser's URL. The item ID should be 579f97b2f3b94d4a8e48a5f140a6639b

Display the web scene

You can display a web scene using the web scene's item ID. Create a scene from the web scene portal item, and display it in your app.

  1. In Visual Studio, in the Solution Explorer, double-click SceneViewModel.cs to open the file.

  2. Add additional required using statements at the top of the class.

    SceneViewModel.cs
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    using System;
    using System.Collections.Generic;
    using System.Text;
    
    using Esri.ArcGISRuntime.Geometry;
    using Esri.ArcGISRuntime.Mapping;
    using System.ComponentModel;
    using System.Runtime.CompilerServices;
    
    using Esri.ArcGISRuntime.Portal;
    using System.Threading.Tasks;
    
  3. In the SceneViewModel class, remove all the existing code in the SetupScene() function.

    SceneViewModel.cs
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            private void SetupScene()
            {
    
                // Create a new scene with an imagery basemap.
                Scene scene = new Scene(BasemapStyle.ArcGISImageryStandard);
    
                // Create an elevation source to show relief in the scene.
                string elevationServiceUrl = "http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer";
                ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource(new Uri(elevationServiceUrl));
    
                // Create a Surface with the elevation data.
                Surface elevationSurface = new Surface();
                elevationSurface.ElevationSources.Add(elevationSource);
    
                // Add an exaggeration factor to increase the 3D effect of the elevation.
                elevationSurface.ElevationExaggeration = 2.5;
    
                // Apply the surface to the scene.
                scene.BaseSurface = elevationSurface;
    
                // Create a point that defines the observer's (camera) initial location in the scene.
                // The point defines a longitude, latitude, and altitude of the initial camera location.
                MapPoint cameraLocation = new MapPoint(-118.804, 33.909, 5330.0, SpatialReferences.Wgs84);
    
                // Create a Camera using the point, the direction the camera should face (heading), and its pitch and roll (rotation and tilt).
                Camera sceneCamera = new Camera(locationPoint: cameraLocation,
                                      heading: 355.0,
                                      pitch: 72.0,
                                      roll: 0.0);
    
                // Create the initial point to center the camera on (the Santa Monica mountains in Southern California).
                // Longitude=118.805 degrees West, Latitude=34.027 degrees North
                MapPoint sceneCenterPoint = new MapPoint(-118.805, 34.027, SpatialReferences.Wgs84);
    
                // Set an initial viewpoint for the scene using the camera and observation point.
                Viewpoint initialViewpoint = new Viewpoint(sceneCenterPoint, sceneCamera);
                scene.InitialViewpoint = initialViewpoint;
    
                // Set the view model "Scene" property.
                this.Scene = scene;
    
            }
    
  4. Modify the signature of the SetupScene() function to include the async keyword and return Task rather than void.

    SceneViewModel.cs
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            private async Task SetupScene()
            {
    
            }
    
    Expand
  5. Modify the call to SetupScene() (in the SceneViewModel constructor) to avoid a compilation warning. After changing SetupScene() to an asynchronous method, the following warning appears in the Visual Studio Error List.

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    Because this call is not awaited, execution of the current method continues before the call is
    completed. Consider applying the 'await' operator to the result of the call.

    Because your code does not anticipate a return value from this call, the warning can be ignored. To be more specific about your intentions with this call and to address the warning, add the following code to store the return value in a discard.

    SceneViewModel.cs
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            public SceneViewModel()
            {
    
                _ = SetupScene();
    
            }
    
    Expand
  6. Add code to the SetupScene() function to create a PortalItem for the web scene. To do this, provide the web scene's item ID and an ArcGISPortal referencing ArcGIS Online.

    SceneViewModel.cs
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            private async Task SetupScene()
            {
    
                // Create a portal. If a URI is not specified, www.arcgis.com is used by default.
                ArcGISPortal portal = await ArcGISPortal.CreateAsync();
    
                // Get the portal item for a web scene using its unique item id.
                PortalItem sceneItem = await PortalItem.CreateAsync(portal, "579f97b2f3b94d4a8e48a5f140a6639b");
    
            }
    
    Expand
  7. Create a Scene using the PortalItem. To display the scene, set the SceneViewModel.Scene property to this new Scene.

    SceneViewModel.cs
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            private async Task SetupScene()
            {
    
                // Create a portal. If a URI is not specified, www.arcgis.com is used by default.
                ArcGISPortal portal = await ArcGISPortal.CreateAsync();
    
                // Get the portal item for a web scene using its unique item id.
                PortalItem sceneItem = await PortalItem.CreateAsync(portal, "579f97b2f3b94d4a8e48a5f140a6639b");
    
                // Create the scene from the item.
                Scene scene = new Scene(sceneItem);
    
                // To display the scene, set the SceneViewModel.Scene property, which is bound to the scene view.
                this.Scene = scene;
    
            }
    
    Expand
  8. Click Debug > Start Debugging (or press <F5> on the keyboard) to run the app.

Your app should display the scene that you viewed earlier in the Scene Viewer.

What's Next?

Learn how to use additional API features, ArcGIS location services, and ArcGIS tools in these tutorials:

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