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ArcGIS Runtime SDK for .NET

Terrain exaggeration

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

Configure the vertical exaggeration of terrain (the ground surface) in a scene.

How to use the sample

Use the slider to update terrain exaggeration.

How it works

  1. Create an elevation source and add it to a new surface.
  2. Add the surface to the scene.
  3. Configure the surface's elevation exaggeration.

Relevant API

  • Scene
  • Surface
  • Scene.BaseSurface
  • Surface.ElevationExaggeration

Tags

Elevation, terrain, DTM, DEM, surface, 3D, scene

Sample Code

<?xml version="1.0" encoding="utf-8" ?>
<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"
             xmlns:resources="clr-namespace:Forms.Resources;assembly=ArcGISRuntime"
             x:Class="ArcGISRuntimeXamarin.Samples.TerrainExaggeration.TerrainExaggeration">
    <RelativeLayout>
        <esriUI:SceneView x:Name="MySceneView" Style="{StaticResource SceneWithFormStyle}" ViewInsets="0" />
        <resources:ResponsiveFormContainer x:Name="FormContainer">
            <StackLayout>
                <Label Text="Terrain exaggeration:" Style="{StaticResource LabelStyle}" />
                <Slider x:Name="TerrainSlider" 
                        Maximum="3" Minimum="1" Value="1"
                        BackgroundColor="Black" />
            </StackLayout>
        </resources:ResponsiveFormContainer>
    </RelativeLayout>
</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 System;
using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Xamarin.Forms;

namespace ArcGISRuntimeXamarin.Samples.TerrainExaggeration
{
    [ArcGISRuntime.Samples.Shared.Attributes.Sample(
        "Terrain exaggeration",
        "Map",
        "Configure the vertical exaggeration of terrain (the ground surface) in a scene.",
        "",
        "Elevation", "terrain", "DTM", "DEM", "surface", "3D", "scene")]
    public partial class TerrainExaggeration : ContentPage
    {
        private readonly string _elevationServiceUrl = "http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer";

        public TerrainExaggeration()
        {
            InitializeComponent();
            Initialize();
        }

        private void Initialize()
        {
            // Configure the scene with National Geographic basemap.
            MySceneView.Scene = new Scene(Basemap.CreateNationalGeographic());

            // Add the base surface for elevation data.
            Surface elevationSurface = new Surface();
            ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource(new Uri(_elevationServiceUrl));
            elevationSurface.ElevationSources.Add(elevationSource);

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

            // Set the initial camera.
            MapPoint initialLocation = new MapPoint(-119.9489, 46.7592, 0, SpatialReferences.Wgs84);
            Camera initialCamera = new Camera(initialLocation, 15000, 40, 60, 0);
            MySceneView.SetViewpointCamera(initialCamera);

            // Update terrain exaggeration based on the slider value.
            TerrainSlider.ValueChanged += (sender, e) =>
            {
                elevationSurface.ElevationExaggeration = TerrainSlider.Value;
            };
        }
    }
}