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ArcGIS Runtime SDK for .NET

View content beneath terrain surface

This code sample is available for these platforms:
View Sample on GitHub

See through terrain in a scene and move the camera underground.

Image of view content beneath terrain surface

Use case

By default, a scene's terrain is fully opaque and the camera cannot go underground. To see underground features such as pipes in a utility network, you can lower the opacity of the terrain surface and set the navigation constraint on the surface to allow underground navigation.

How to use the sample

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.

How it works

  1. Display an Scene in a SceneView which contains layers with underground features.
  2. To see underground, get the scene's base surface and set its opacity to a value between 0 and 1.
  3. To allow the camera to go underground, set the surface's navigation constraint to None.

Relevant API

  • Surface
  • Surface.NavigationConstraint

About the data

This data is a point scene layer showing underground wellbore paths (green polylines) and seismic events (brown points).

Tags

3D, subsurface, underground, utilities

Sample Code

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:esriUI="clr-namespace:Esri.ArcGISRuntime.Xamarin.Forms;assembly=Esri.ArcGISRuntime.Xamarin.Forms"
             x:Class="ArcGISRuntimeXamarin.Samples.ViewContentBeneathSurface.ViewContentBeneathSurface">
    <Grid>
        <esriUI:SceneView x:Name="MySceneView" />
    </Grid>
</ContentPage>
// 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 Xamarin.Forms;

namespace ArcGISRuntimeXamarin.Samples.ViewContentBeneathSurface
{
    [ArcGISRuntime.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 : ContentPage
    {
        public ViewContentBeneathSurface()
        {
            InitializeComponent();
            Initialize();
        }

        private async void 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;
        }
    }
}