Closest facility

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 /*  * 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.closest_facility;  import java.util.Arrays; import java.util.Collections; import java.util.List; import java.util.concurrent.ExecutionException; import java.util.stream.Collectors;  import javafx.application.Application; import javafx.geometry.Point2D; import javafx.scene.Scene; import javafx.scene.control.Alert; import javafx.scene.control.Alert.AlertType; import javafx.scene.input.MouseButton; import javafx.scene.layout.StackPane; import javafx.stage.Stage;  import com.esri.arcgisruntime.ArcGISRuntimeEnvironment; import com.esri.arcgisruntime.concurrent.ListenableFuture; import com.esri.arcgisruntime.geometry.Point; import com.esri.arcgisruntime.geometry.SpatialReference; import com.esri.arcgisruntime.geometry.SpatialReferences; import com.esri.arcgisruntime.loadable.LoadStatus; import com.esri.arcgisruntime.mapping.ArcGISMap; import com.esri.arcgisruntime.mapping.BasemapStyle; import com.esri.arcgisruntime.mapping.Viewpoint; import com.esri.arcgisruntime.mapping.view.Graphic; import com.esri.arcgisruntime.mapping.view.GraphicsOverlay; import com.esri.arcgisruntime.mapping.view.MapView; import com.esri.arcgisruntime.symbology.PictureMarkerSymbol; import com.esri.arcgisruntime.symbology.SimpleLineSymbol; import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol; import com.esri.arcgisruntime.tasks.networkanalysis.ClosestFacilityParameters; import com.esri.arcgisruntime.tasks.networkanalysis.ClosestFacilityResult; import com.esri.arcgisruntime.tasks.networkanalysis.ClosestFacilityRoute; import com.esri.arcgisruntime.tasks.networkanalysis.ClosestFacilityTask; import com.esri.arcgisruntime.tasks.networkanalysis.Facility; import com.esri.arcgisruntime.tasks.networkanalysis.Incident;  public class ClosestFacilitySample extends Application {   // black cross were user clicked  private Point incidentPoint;  private GraphicsOverlay facilityGraphicsOverlay;  private GraphicsOverlay incidentGraphicsOverlay;  // holds locations of hospitals around San Diego  private List<Facility> facilities;  private MapView mapView;  // solves task to find closest route between an incident and a facility  private ClosestFacilityTask task;  // parameters needed to solve for route  private ClosestFacilityParameters closestFacilityParameters;  // used to display route between incident and facility to mapview  private SimpleLineSymbol routeSymbol;  // same spatial reference of the map  private final SpatialReference spatialReference = SpatialReferences.getWebMercator();   @Override  public void start(Stage stage) {   // pane will hold mapview to be displayed on application  StackPane stackPane = new StackPane();  Scene scene = new Scene(stackPane);   // set title, size, and add scene to stage  stage.setTitle("Closest Facility Sample");  stage.setWidth(800);  stage.setHeight(700);  stage.setScene(scene);  stage.show();   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 map with the streets basemap style  ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_STREETS);   // create a map view and set the map to it  mapView = new MapView();  mapView.setMap(map);   // add the map view to stack pane  stackPane.getChildren().addAll(mapView);   // set a viewpoint on the map view to be over San Diego  mapView.setViewpoint(new Viewpoint(32.727, -117.1750, 40000));   facilityGraphicsOverlay = new GraphicsOverlay();  incidentGraphicsOverlay = new GraphicsOverlay();  createFacilitiesAndGraphics();  // to load graphics faster, add graphics overlay to view once all graphics are in graphics overlay  mapView.getGraphicsOverlays().add(facilityGraphicsOverlay);  mapView.getGraphicsOverlays().add(incidentGraphicsOverlay);   // task to find the closest route between an incident and a facility  final String sanDiegoRegion =  "https://sampleserver6.arcgisonline.com/arcgis/rest/services/NetworkAnalysis/SanDiego/NAServer/ClosestFacility";  task = new ClosestFacilityTask(sanDiegoRegion);  task.addDoneLoadingListener(() -> {  if (task.getLoadStatus() == LoadStatus.LOADED) {  try {  closestFacilityParameters = task.createDefaultParametersAsync().get();  // set new parameters to find route  closestFacilityParameters.setFacilities(facilities);  } catch (ExecutionException | InterruptedException e) {  e.printStackTrace();  }  } else {  Alert alert = new Alert(Alert.AlertType.ERROR, "Closest Facility Task Failed to Load!");  alert.show();  }  });  task.loadAsync();   // symbols that display incident(black cross) and route(blue line) to view  SimpleMarkerSymbol incidentSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CROSS, 0xFF000000, 20);  routeSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFF0000FF, 2.0f);   // place incident were user clicks and display route to closest facility  mapView.setOnMouseClicked(e -> {  // check that the primary mouse button was clicked  if (e.getButton() == MouseButton.PRIMARY && e.isStillSincePress()) {  // remove last incident from view  incidentGraphicsOverlay.getGraphics().clear();  // show incident to the mapview  Point mapPoint = mapView.screenToLocation(new Point2D(e.getX(), e.getY()));  incidentPoint = new Point(mapPoint.getX(), mapPoint.getY(), spatialReference);  Graphic graphic = new Graphic(incidentPoint, incidentSymbol);  incidentGraphicsOverlay.getGraphics().add(graphic);   populateParametersAndSolveRoute();  }  });  } catch (Exception e) {  // on any error, display the stack trace.  e.printStackTrace();  }  }   /**  * Creates facilities around the San Diego region.  * <p>  * Facilities are created using point geometry which is then used to make graphics for the graphics overlay.  */  private void createFacilitiesAndGraphics() {  // List of facilities to be placed around San Diego area  facilities = Arrays.asList(  new Facility(new Point(-1.3042129900625112E7, 3860127.9479775648, spatialReference)),  new Facility(new Point(-1.3042193400557665E7, 3862448.873041752, spatialReference)),  new Facility(new Point(-1.3046882875518233E7, 3862704.9896770366, spatialReference)),  new Facility(new Point(-1.3040539754780494E7, 3862924.5938606677, spatialReference)),  new Facility(new Point(-1.3042571225655518E7, 3858981.773018156, spatialReference)),  new Facility(new Point(-1.3039784633928463E7, 3856692.5980474586, spatialReference)),  new Facility(new Point(-1.3049023883956768E7, 3861993.789732541, spatialReference)));   // image for displaying facility  String facilityUrl = "https://static.arcgis.com/images/Symbols/SafetyHealth/Hospital.png";  PictureMarkerSymbol facilitySymbol = new PictureMarkerSymbol(facilityUrl);  facilitySymbol.setHeight(30);  facilitySymbol.setWidth(30);   // for each facility, create a graphic and add to graphics overlay  facilities.stream().map(f -> new Graphic(f.getGeometry(), facilitySymbol))  .collect(Collectors.toCollection(() -> facilityGraphicsOverlay.getGraphics()));  }   /**  * Adds facilities(hospitals) and user's incident(black cross) to closest facility parameters which will be used to  * display the closest route from the user's incident to its' nearest facility.  */  private void populateParametersAndSolveRoute() {  closestFacilityParameters.setIncidents(Collections.singletonList(new Incident(incidentPoint)));   // find closest route using parameters from above  ListenableFuture<ClosestFacilityResult> result = task.solveClosestFacilityAsync(closestFacilityParameters);  result.addDoneListener(() -> {  try {  ClosestFacilityResult facilityResult = result.get();  // a list of closest facilities based on users incident  List<Integer> rankedList = facilityResult.getRankedFacilityIndexes(0);  // get the index of the closest facility to incident  int closestFacility = rankedList.get(0);  // get route from incident to closest facility and display to mapview  ClosestFacilityRoute route = facilityResult.getRoute(closestFacility, 0);  incidentGraphicsOverlay.getGraphics().add(new Graphic(route.getRouteGeometry(), routeSymbol));  } catch (ExecutionException e) {  if (e.getMessage().contains("Unable to complete operation")) {  Alert dialog = new Alert(AlertType.WARNING);  dialog.setHeaderText(null);  dialog.setTitle("Route Error");  dialog.setContentText("Incident not within San Diego area!");  dialog.showAndWait();  } else {  e.printStackTrace();  }  } catch (InterruptedException e) {  e.printStackTrace();  }  });  }   /**  * Stops and releases all resources used in application.  */  @Override  public void stop() {   if (mapView != null) {  mapView.dispose();  }  }   /**  * Opens and runs application.  *  * @param args arguments passed to this application  */  public static void main(String[] args) {   Application.launch(args);  }  }