Edit KML ground overlay

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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.
 */

package com.esri.samples.edit_kml_ground_overlay;

import java.io.File;

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.Slider;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.Envelope;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.layers.KmlLayer;
import com.esri.arcgisruntime.mapping.ArcGISScene;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.Camera;
import com.esri.arcgisruntime.mapping.view.SceneView;
import com.esri.arcgisruntime.ogc.kml.KmlDataset;
import com.esri.arcgisruntime.ogc.kml.KmlGroundOverlay;
import com.esri.arcgisruntime.ogc.kml.KmlIcon;
import com.esri.arcgisruntime.symbology.ColorUtil;

public class EditKMLGroundOverlaySample extends Application {

  private SceneView sceneView;

  @Override
  public void start(Stage stage) {

    try {
      // create stack pane and application scene
      StackPane stackPane = new StackPane();
      Scene fxScene = new Scene(stackPane);
      fxScene.getStylesheets().add(getClass().getResource("/edit_kml_ground_overlay/style.css").toExternalForm());

      // set title, size and add application scene to stage
      stage.setTitle("Edit KML Ground Overlay Sample");
      stage.setWidth(800);
      stage.setHeight(700);
      stage.setScene(fxScene);
      stage.show();

      // 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 and add it to the scene view
      ArcGISScene scene = new ArcGISScene(BasemapStyle.ARCGIS_IMAGERY);
      sceneView = new SceneView();
      sceneView.setArcGISScene(scene);

      // create a geometry for the ground overlay
      Envelope overlayGeometry = new Envelope(-123.066227926904, 44.04736963555683, -123.0796942287304, 44.03878298600624, SpatialReferences.getWgs84());

      // create a KML icon for the overlay image
      String overlayImageURI = new File(System.getProperty("data.dir"), "./samples-data/images/1944.jpg").getAbsolutePath();
      KmlIcon overlayImage = new KmlIcon(overlayImageURI);

      // create the KML ground overlay
      KmlGroundOverlay kmlGroundOverlay = new KmlGroundOverlay(overlayGeometry, overlayImage);

      // set the rotation of the ground overlay to correct the overlay's rotation with respect to the basemap
      kmlGroundOverlay.setRotation(-3.046024799346924);

      // create a KML dataset with the ground overlay as the root node
      KmlDataset kmlDataset = new KmlDataset(kmlGroundOverlay);

      // create a KML layer using the KML dataset
      KmlLayer kmlLayer = new KmlLayer(kmlDataset);

      // add the KML layer to the scene view
      sceneView.getArcGISScene().getOperationalLayers().add(kmlLayer);

      // set the viewpoint to the ground overlay
      sceneView.setViewpoint(new Viewpoint(overlayGeometry, new Camera(overlayGeometry.getCenter(), 1250, 45, 60, 0)));

      // create a slider for adjusting the overlay opacity
      Slider slider = new Slider(0, 1, 1);
      slider.setMaxWidth(300);

      // add a listener to the slider's value property to set the opacity of the KML ground overlay
      slider.valueProperty().addListener(o ->
              kmlGroundOverlay.setColor(ColorUtil.colorToArgb(new Color(0, 0, 0, slider.getValue())))
      );

      // create a controls box
      VBox controlsVBox = new VBox();
      controlsVBox.setBackground(new Background(new BackgroundFill(Paint.valueOf("rgba(0,0,0,0.5)"), CornerRadii.EMPTY,
              Insets.EMPTY)));
      controlsVBox.setPadding(new Insets(10.0));
      controlsVBox.setSpacing(5);
      controlsVBox.setMaxSize(250, 20);
      controlsVBox.setAlignment(Pos.CENTER);
      controlsVBox.getStyleClass().add("panel-region");

      // create a label for the slider
      Label label = new Label("Overlay Opacity");
      // add the slider and label to the controls box
      controlsVBox.getChildren().addAll(label, slider);

      // add the scene view and controls to the stack pane
      stackPane.getChildren().addAll(sceneView, controlsVBox);
      StackPane.setAlignment(controlsVBox, Pos.TOP_LEFT);
      StackPane.setMargin(controlsVBox, new Insets(10, 0, 0, 10));

    } catch (Exception e) {
      // on any error, display the stack trace.
      e.printStackTrace();
    }
  }

  /**
   * Stops and releases all resources used in application.
   */
  @Override
  public void stop() {

    if (sceneView != null) {
      sceneView.dispose();
    }
  }

  /**
   * Opens and runs application.
   *
   * @param args arguments passed to this application
   */
  public static void main(String[] args) {

    Application.launch(args);
  }
}