Learn how to create and display a scene with a basemap layer and an elevation layer. Set properties of the scene's camera to control the 3D perspective.
Like a map, a scene contains layers of geographic data. It contains a basemap layer and, optionally, one or more data layers. To provide a realistic view of the terrain, you can also add elevation layers to define the height of the surface across the scene. The 3D perspective of the scene is controlled by the scene's camera, which defines the position of the scene observer in 3D space.
In this tutorial, you create and display a scene using the imagery basemap layer. The surface of the scene is defined with an elevation layer and the camera is positioned to display an area of the Santa Monica Mountains in the scene view.
The scene and code will be used as the starting point for other 3D tutorials.
Prerequisites
The following are required for this tutorial:
An ArcGIS account to access your API keys. If you don't have an account, sign up for free.
From the Welcome to IntelliJ IDEA screen, click the New Project button. (If you're already inside a project, click File > New > Project in the menu bar.)
In the New Project window, select Gradle from the list on the left, make sure Java is checked under Additional Libraries and Frameworks, and click Next.
In the next window, enter a name for your new project and choose a location to save it.
Click Artifact Coordinates to expand the drop-down. In GroupId enter com.example.app. You can leave the defaults for ArtifactId and Version. Then click Finish.
In the Project tool window, replace the contents of the build.gradle file with the following script to configure your app and reference the API. Make sure that you import the Gradle changes once you have replaced the contents.
Click View > Tool Windows > Gradle to open the Gradle view, then in Tasks > build, double-click copyNatives. This unpacks the native library dependencies to $USER_HOME/.arcgis.
You can also run Gradle tasks via the command line. Consult Gradle's documentation to learn how this is done.
In the Project tool window, under src/main, right-click the java folder, and click New > Package.
Name the package com.example.app.
Right-click this package and click New > Java Class.
Name the class App.
Add import statements
In App.Java, add import statements to reference the ArcGIS Runtime API and JavaFX classes.
The sceneView member variable allows you to easily reference your SceneView from other parts of the application.
Create the main() method, where you call Application.launch(args).
This code calls the static method launch() of the JavaFX class Application, which creates an instance of your App class and then calls the start() method. For a description of the JavaFX lifecycle, see Application.
Override the start() method, in which you configure the JavaFX Stage with a title and dimensions, and then show it.
Note that the start method is abstract and must be overridden. It takes a single parameter of the JavaFX type Stage.
Create a JavaFX StackPane, and use it to create a JavaFX Scene. Then set the JavaFX scene on the stage.
Create a new Surface and add a new ArcGISTiledElevationSource to it to define the base surface for the scene. Next, set the elevationExaggeration property on the surface to 2.5f to increase the 3D effect of the elevation. Finally, set the surface as the base surface of the scene.
An elevation source can define a surface with 3D terrain in a scene. Without an elevation source, the default globe surface is used to display the scene.
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// set the scene on the scene view sceneView.setArcGISScene(scene);
// add base surface for elevation data Surface surface = new Surface();
String elevationServiceUrl = "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer";
surface.getElevationSources().add(new ArcGISTiledElevationSource(elevationServiceUrl));
// add an exaggeration factor to increase the 3D effect of the elevation. surface.setElevationExaggeration(2.5f);
scene.setBaseSurface(surface);
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Set the initial viewpoint of the sceneView using a Point and a Camera.
The position you view the scene from is defined by a Camera. The following properties of the camera are used to define an observation point in the scene:
An API key is required to enable access to services, web maps, and web scenes hosted in ArcGIS Online.
If you haven't already, go to your developer dashboard to get your API key.
For these tutorials, use your default API key. It is scoped to include all of the services demonstrated in the tutorials.
Before running the ArcGIS Java API code, set the API key property on the ArcGISRuntimeEnvironment with your API key. In the code below, replace YOUR_API_KEY with your actual API Key. Be sure to surround your API Key with quotes, because this value is a string.
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stage.setScene(fxScene);
// Note: it is not best practice to store API keys in source code.// The API key is referenced here for the convenience of this tutorial. String yourApiKey = "YOUR_API_KEY";
ArcGISRuntimeEnvironment.setApiKey(yourApiKey);
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Run the app.
Ensure to run the app as a Gradle task and not as an application in your IDE. In the Gradle tool window, under Tasks > application, click run.
You should see a scene with the imagery basemap layer centered on the Santa Monica Mountains in California. Click, drag, and scroll the mouse wheel on the scene view to explore the scene.
Stop the app
To ensure that ArcGIS Runtime API resources used in the application are released when it is closed, override the JavaFX stop method and call dispose() on the sceneView: