Set the terrain surface with elevation described by a local tile package.
Use case
In a scene view, the terrain surface is what the basemap, operational layers, and graphics are draped onto. For example, when viewing a scene in a mountainous region, applying a terrain surface to the scene will help in recognizing the slopes, valleys, and elevated areas.
How to use the sample
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.
How it works
Create a Scene and add it to a SceneView.
Create an ArcGISTiledElevationSource with the path to the local tile package.
Add this source to the scene's base surface: Scene.BaseSurface.ElevationSources.Add(tiledElevationSource).
Relevant API
ArcGISTiledElevationSource
Surface
Additional information
The tile package must be a LERC (limited error raster compression) encoded TPK. Details on can be found in the topic Share a tile package in the ArcGIS Pro documentation.
Tags
3D, elevation, LERC, surface, terrain, tile cache
Sample Code
CreateTerrainSurfaceTilePackage.cs
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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 ArcGISRuntime;
using ArcGISRuntime.Samples.Managers;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.UI.Controls;
using Foundation;
using UIKit;
namespaceArcGISRuntimeXamarin.Samples.CreateTerrainSurfaceTilePackage{
[Register("CreateTerrainSurfaceTilePackage")]
[ArcGISRuntime.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" })]
[ArcGISRuntime.Samples.Shared.Attributes.OfflineData("cce37043eb0440c7a5c109cf8aad5500")]
publicclassCreateTerrainSurfaceTilePackage : UIViewController {
// Hold references to UI controls.private SceneView _mySceneView;
publicCreateTerrainSurfaceTilePackage() {
Title = "Create terrain surface from a tile package";
}
privatevoidInitialize() {
// Create the scene. _mySceneView.Scene = new Scene(BasemapStyle.ArcGISImageryStandard);
// Get the path to the elevation tile package.string packagePath = DataManager.GetDataFolder("cce37043eb0440c7a5c109cf8aad5500", "MontereyElevation.tpk");
// 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);
}
publicoverridevoidLoadView() {
// Create the views. View = new UIView() { BackgroundColor = ApplicationTheme.BackgroundColor };
_mySceneView = new SceneView();
_mySceneView.TranslatesAutoresizingMaskIntoConstraints = false;
// Add the views. View.AddSubviews(_mySceneView);
// Lay out the views. NSLayoutConstraint.ActivateConstraints(new[]
{
_mySceneView.TopAnchor.ConstraintEqualTo(View.SafeAreaLayoutGuide.TopAnchor),
_mySceneView.BottomAnchor.ConstraintEqualTo(View.BottomAnchor),
_mySceneView.LeadingAnchor.ConstraintEqualTo(View.LeadingAnchor),
_mySceneView.TrailingAnchor.ConstraintEqualTo(View.TrailingAnchor)
});
}
publicoverridevoidViewDidLoad() {
base.ViewDidLoad();
Initialize();
}
}
}