Graphics overlay dictionary renderer 3D

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/*
 * Copyright 2018 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.graphics_overlay_dictionary_renderer_3D;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import javax.xml.parsers.DocumentBuilderFactory;
import java.io.File;
import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.geometry.GeometryEngine;
import com.esri.arcgisruntime.geometry.Multipoint;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PointCollection;
import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.mapping.ArcGISScene;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.view.Camera;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.SceneView;
import com.esri.arcgisruntime.portal.Portal;
import com.esri.arcgisruntime.portal.PortalItem;
import com.esri.arcgisruntime.symbology.DictionaryRenderer;
import com.esri.arcgisruntime.symbology.DictionarySymbolStyle;

public class GraphicsOverlayDictionaryRenderer3DSample extends Application {

  private SceneView sceneView;

  @Override
  public void start(Stage stage) {
    try {
      // create stack pane and application scene
      var stackPane = new StackPane();
      Scene fxScene = new Scene(stackPane);

      // set title, size, and add scene to stage
      stage.setTitle("Graphics Overlay Dictionary Renderer 3D 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 view
      sceneView = new SceneView();
      // create a scene with the topographic basemap style
      ArcGISScene scene = new ArcGISScene(BasemapStyle.ARCGIS_TOPOGRAPHIC);

      var graphicsOverlay = new GraphicsOverlay(GraphicsOverlay.RenderingMode.DYNAMIC);
      sceneView.getGraphicsOverlays().add(graphicsOverlay);

      // create the dictionary symbol style from the Joint Military Symbology MIL-STD-2525D portal item
      var portalItem = new PortalItem(new Portal("https://www.arcgis.com/", false), "d815f3bdf6e6452bb8fd153b654c94ca");
      var dictionarySymbolStyle = new DictionarySymbolStyle(portalItem);

      // add done loading listeners to the scene and dictionary symbol style and check they have loaded
      scene.addDoneLoadingListener(() -> {
        if (scene.getLoadStatus() == LoadStatus.LOADED) {
          dictionarySymbolStyle.addDoneLoadingListener(() -> {
            if (dictionarySymbolStyle.getLoadStatus() == LoadStatus.LOADED) {

              // find the first configuration setting which has the property name "model",
              // and set its value to "ORDERED ANCHOR POINTS"
              dictionarySymbolStyle.getConfigurations().stream()
                .filter(configuration -> configuration.getName().equals("model"))
                .findFirst()
                .ifPresent(modelConfiguration -> modelConfiguration.setValue("ORDERED ANCHOR POINTS"));

              // create a new dictionary renderer from the dictionary symbol style to render graphics
              // with symbol dictionary attributes and set it to the graphics overlay renderer
              var dictionaryRenderer = new DictionaryRenderer(dictionarySymbolStyle);
              graphicsOverlay.setRenderer(dictionaryRenderer);

              // parse graphic attributes from an XML file following the mil2525d specification
              try {
                List<Map<String, Object>> messages = parseMessages();

                // create graphics with attributes and add to graphics overlay
                List<Graphic> graphics = messages.stream()
                  .map(GraphicsOverlayDictionaryRenderer3DSample::createGraphic)
                  .collect(Collectors.toList());
                graphicsOverlay.getGraphics().addAll(graphics);
                // set the viewpoint to the extent of the graphics overlay
                sceneView.setViewpointCamera(new Camera((graphicsOverlay.getExtent().getCenter()), 15000, 0, 70, 0));

              } catch (Exception e) {
                e.printStackTrace();
              }
            } else {
              new Alert(Alert.AlertType.ERROR,
                "Failed to load symbol style " + dictionarySymbolStyle.getLoadError().getCause().getMessage()).show();
            }
          });
        } else {
          new Alert(Alert.AlertType.ERROR, "Scene failed to load" + scene.getLoadError().getCause().getMessage()).show();
        }
        // load the dictionary symbol style once the map has loaded
        dictionarySymbolStyle.loadAsync();
      });

      // set the scene to the scene view and add the scene view to the stack pane
      sceneView.setArcGISScene(scene);
      stackPane.getChildren().add(sceneView);

    } catch (Exception ex) {
      // on any exception, print the stacktrace
      ex.printStackTrace();
    }
  }

  /**
   * Parses a XML file following the mil2525d specification and creates a message for each block of attributes found.
   */
  private List<Map<String, Object>> parseMessages() throws Exception {

    File mil2525dFile = new File(System.getProperty("data.dir"), "./samples-data/xml/Mil2525DMessages.xml");
    var documentBuilderFactory = DocumentBuilderFactory.newInstance();
    var documentBuilder = documentBuilderFactory.newDocumentBuilder();
    var document = documentBuilder.parse(mil2525dFile);
    document.getDocumentElement().normalize();

    final List<Map<String, Object>> messages = new ArrayList<>();

    for (int i = 0; i < document.getElementsByTagName("message").getLength() ; i++) {
      Node message = document.getElementsByTagName("message").item(i);

      Map<String, Object> attributes = new HashMap<>();

      NodeList childNodes = message.getChildNodes();
      for (int j = 0; j < childNodes.getLength() ; j++) {
        attributes.put(childNodes.item(j).getNodeName(), childNodes.item(j).getTextContent());
      }
      messages.add(attributes);
    }

    return messages;
  }

  /**
   * Creates a graphic using a symbol dictionary and the attributes that were passed.
   *
   * @param attributes tells symbol dictionary what symbol to apply to graphic
   */
  private static Graphic createGraphic(Map<String, Object> attributes) {
    // get spatial reference
    int wkid = Integer.parseInt((String) attributes.get("_wkid"));
    SpatialReference sr = SpatialReference.create(wkid);

    // get points from the coordinate string in the "_control_points" attribute (delimited with ';')
    String[] coordinates = ((String) attributes.get("_control_points")).split(";");
    List<Point> points = Stream.of(coordinates)
        .map(cs -> cs.split(",")) // get each ordinate
        .map(c -> new Point(Double.parseDouble(c[0]), Double.parseDouble(c[1]), sr))// create a Point with the ordinates
        .map(c -> (Point) GeometryEngine.project(c, SpatialReferences.getWgs84())) // project to display in scene
        .collect(Collectors.toList());

    // create a point collection with the points
    var pointCollection = new PointCollection(SpatialReferences.getWgs84());
    pointCollection.addAll(points);

    // remove unneeded attributes, use geometry for graphic positioning instead
    attributes.remove("_control_points");
    attributes.remove("_wkid");

    // return a graphic with a multipoint geometry (some have more than one point)
    return new Graphic(new Multipoint(pointCollection), attributes);
  }

  /**
   * 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);
  }
}