Vertically exaggerate terrain in a scene.

Use case
Vertical exaggeration can be used to emphasize subtle changes in a surface. This can be useful in creating visualizations of terrain where the horizontal extent of the surface is significantly greater than the amount of vertical change in the surface. A fractional vertical exaggeration can be used to flatten surfaces or features that have extreme vertical variation.
How to use the sample
Use the slider to update terrain exaggeration.
How it works
- Create an elevation surface from a URL with
Surface.getElevationSources().add("elevationURL"). An elevation source defines the terrain based on a digital elevation model (DEM) or digital terrain model (DTM). - Add the surface to the scene with
scene.setBaseSurface(Surface). The surface visualizes the elevation source. - Configure the surface’s elevation exaggeration using
surface.setElevationExaggeration(exaggeration).
Relevant API
- ArcGISScene
- Surface
Tags
3D, DEM, DTM, elevation, scene, surface, terrain
Sample Code
/* * Copyright 2022 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. */
module com.esri.samples.terrain_exaggeration { // require ArcGIS Maps SDK for Java module requires com.esri.arcgisruntime;
// handle SLF4J http://www.slf4j.org/codes.html#StaticLoggerBinder requires org.slf4j.nop;
// require JavaFX modules that the application uses requires javafx.graphics; requires javafx.controls; requires javafx.fxml;
// make all @FXML annotated objects reflectively accessible to the javafx.fxml module opens com.esri.samples.terrain_exaggeration to javafx.fxml;
exports com.esri.samples.terrain_exaggeration;}/* * Copyright 2017 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. */
package com.esri.samples.terrain_exaggeration;
import javafx.fxml.FXML;import javafx.scene.control.Label;import javafx.scene.control.Slider;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;import com.esri.arcgisruntime.geometry.Point;import com.esri.arcgisruntime.mapping.ArcGISScene;import com.esri.arcgisruntime.mapping.ArcGISTiledElevationSource;import com.esri.arcgisruntime.mapping.BasemapStyle;import com.esri.arcgisruntime.mapping.Surface;import com.esri.arcgisruntime.mapping.view.Camera;import com.esri.arcgisruntime.mapping.view.SceneView;
public class TerrainExaggerationController {
@FXML private Label exaggerationLabel; @FXML private SceneView sceneView; @FXML private Slider exaggerationSlider; private Surface surface;
public void initialize() {
try {
// authentication with an API key or named user is required to access basemaps and other location services String yourAPIKey = System.getProperty("apiKey"); ArcGISRuntimeEnvironment.setApiKey(yourAPIKey);
// create a scene with a basemap style ArcGISScene scene = new ArcGISScene(BasemapStyle.ARCGIS_STREETS_RELIEF);
// add the SceneView to the stack pane sceneView.setArcGISScene(scene);
// add base surface for elevation data surface = new Surface(); final String elevationImageService = "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"; surface.getElevationSources().add(new ArcGISTiledElevationSource(elevationImageService)); scene.setBaseSurface(surface);
// add a camera and initial camera position Point initialLocation = new Point(-119.94891542688772, 46.75792111605992, 0, sceneView.getSpatialReference()); Camera camera = new Camera(initialLocation, 15000.0, 40.0, 60.0, 0.0); sceneView.setViewpointCamera(camera);
} catch (Exception e) { // on any exception, print the stack trace e.printStackTrace(); } }
/** * Sets the elevation exaggeration to the float chosen via the JavaFX slider. */ @FXML private void changeElevationExaggeration() { exaggerationLabel.setText("Exaggeration: " + (double) Math.round(exaggerationSlider.getValue() * 100d) / 100d); surface.setElevationExaggeration((float) exaggerationSlider.getValue()); }
/** * Disposes application resources. */ void terminate() { if (sceneView != null) { sceneView.dispose(); } }}/* * Copyright 2017 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. */
package com.esri.samples.terrain_exaggeration;
import java.io.IOException;
import javafx.application.Application;import javafx.fxml.FXMLLoader;import javafx.scene.Parent;import javafx.scene.Scene;import javafx.stage.Stage;
public class TerrainExaggerationSample extends Application {
private static TerrainExaggerationController controller;
@Override public void start(Stage stage) throws IOException { // set up the scene FXMLLoader loader = new FXMLLoader(getClass().getResource("/terrain_exaggeration/main.fxml")); Parent root = loader.load(); controller = loader.getController(); Scene scene = new Scene(root);
// set up the stage stage.setTitle("Terrain Exaggeration Sample"); stage.setWidth(800); stage.setHeight(700); stage.setScene(scene); stage.show(); }
/** * Stops and releases all resources used in application. */ @Override public void stop() { controller.terminate(); }
/** * Opens and runs application. * * @param args arguments passed to this application */ public static void main(String[] args) {
Application.launch(args); }
}