Find route

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 // 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.  using Esri.ArcGISRuntime.Geometry; using Esri.ArcGISRuntime.Mapping; using Esri.ArcGISRuntime.Symbology; using Esri.ArcGISRuntime.Tasks.NetworkAnalysis; using Esri.ArcGISRuntime.UI; using System; using System.Collections.Generic; using System.Drawing; using System.Linq; using System.Windows;  namespace ArcGIS.WPF.Samples.FindRoute {  [ArcGIS.Samples.Shared.Attributes.Sample(  name: "Find route",  category: "Network analysis",  description: "Display directions for a route between two points.",  instructions: "For simplicity, the sample comes loaded with a start and end stop. You can click on the Find Route button to display a route between these stops. Once the route is generated, turn-by-turn directions are shown in a list.",  tags: new[] { "directions", "driving", "navigation", "network", "network analysis", "route", "routing", "shortest path", "turn-by-turn" })]  public partial class FindRoute  {  // List of stops on the route ('from' and 'to')  private List<Stop> _routeStops;   // Graphics overlay to display stops and the route result  private GraphicsOverlay _routeGraphicsOverlay;   // URI for the San Diego route service  private Uri _sanDiegoRouteServiceUri = new Uri("https://sampleserver6.arcgisonline.com/arcgis/rest/services/NetworkAnalysis/SanDiego/NAServer/Route");   // URIs for picture marker images  private Uri _checkedFlagIconUri = new Uri("https://static.arcgis.com/images/Symbols/Transportation/CheckeredFlag.png");   private Uri _carIconUri = new Uri("https://static.arcgis.com/images/Symbols/Transportation/CarRedFront.png");   public FindRoute()  {  InitializeComponent();   // Create the map, graphics overlay, and the 'from' and 'to' locations for the route  Initialize();  }   private void Initialize()  {  // Define the route stop locations (points)  MapPoint fromPoint = new MapPoint(-117.15494348793044, 32.706506537686927, SpatialReferences.Wgs84);  MapPoint toPoint = new MapPoint(-117.14905088669816, 32.735308180609138, SpatialReferences.Wgs84);   // Create Stop objects with the points and add them to a list of stops  Stop stop1 = new Stop(fromPoint);  Stop stop2 = new Stop(toPoint);  _routeStops = new List<Stop> { stop1, stop2 };   // Picture marker symbols: from = car, to = checkered flag  PictureMarkerSymbol carSymbol = new PictureMarkerSymbol(_carIconUri);  PictureMarkerSymbol flagSymbol = new PictureMarkerSymbol(_checkedFlagIconUri);   // Add a slight offset (pixels) to the picture symbols.  carSymbol.OffsetX = -carSymbol.Width / 2;  carSymbol.OffsetY = -carSymbol.Height / 2;  flagSymbol.OffsetX = -flagSymbol.Width / 2;  flagSymbol.OffsetY = -flagSymbol.Height / 2;   // Create graphics for the stops  Graphic fromGraphic = new Graphic(fromPoint, carSymbol) { ZIndex = 1 };  Graphic toGraphic = new Graphic(toPoint, flagSymbol) { ZIndex = 1 };   // Create the graphics overlay and add the stop graphics  _routeGraphicsOverlay = new GraphicsOverlay();  _routeGraphicsOverlay.Graphics.Add(fromGraphic);  _routeGraphicsOverlay.Graphics.Add(toGraphic);   // Get an Envelope that covers the area of the stops (and a little more)  Envelope routeStopsExtent = new Envelope(fromPoint, toPoint);  EnvelopeBuilder envBuilder = new EnvelopeBuilder(routeStopsExtent);  envBuilder.Expand(1.5);   // Create a new viewpoint apply it to the map view when the spatial reference changes  Viewpoint sanDiegoViewpoint = new Viewpoint(envBuilder.ToGeometry());  MyMapView.SpatialReferenceChanged += (s, e) => MyMapView.SetViewpoint(sanDiegoViewpoint);   // Add a new Map and the graphics overlay to the map view  MyMapView.Map = new Map(BasemapStyle.ArcGISStreets);  MyMapView.GraphicsOverlays.Add(_routeGraphicsOverlay);  }   private async void SolveRouteClick(object sender, System.Windows.RoutedEventArgs e)  {  try  {  // Create a new route task using the San Diego route service URI  RouteTask solveRouteTask = await RouteTask.CreateAsync(_sanDiegoRouteServiceUri);   // Get the default parameters from the route task (defined with the service)  RouteParameters routeParams = await solveRouteTask.CreateDefaultParametersAsync();   // Make some changes to the default parameters  routeParams.ReturnStops = true;  routeParams.ReturnDirections = true;   // Set the list of route stops that were defined at startup  routeParams.SetStops(_routeStops);   // Solve for the best route between the stops and store the result  RouteResult solveRouteResult = await solveRouteTask.SolveRouteAsync(routeParams);   // Get the first (should be only) route from the result  Route firstRoute = solveRouteResult.Routes.First();   // Get the route geometry (polyline)  Polyline routePolyline = firstRoute.RouteGeometry;   // Create a thick purple line symbol for the route  SimpleLineSymbol routeSymbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Color.Purple, 8.0);   // Create a new graphic for the route geometry and add it to the graphics overlay  Graphic routeGraphic = new Graphic(routePolyline, routeSymbol) { ZIndex = 0 };  _routeGraphicsOverlay.Graphics.Add(routeGraphic);   // Get a list of directions for the route and display it in the list box  IReadOnlyList<DirectionManeuver> directionsList = firstRoute.DirectionManeuvers;  DirectionsListBox.ItemsSource = directionsList;  }  catch (Exception ex)  {  MessageBox.Show(ex.ToString(), "Error");  }  }   private void ResetClick(object sender, System.Windows.RoutedEventArgs e)  {  // Clear the list of directions  DirectionsListBox.ItemsSource = null;   // Remove the route graphic from the graphics overlay (only line graphic in the collection)  int graphicsCount = _routeGraphicsOverlay.Graphics.Count;  for (int i = graphicsCount; i > 0; i--)  {  // Get this graphic and see if it has line geometry  Graphic g = _routeGraphicsOverlay.Graphics[i - 1];  if (g.Geometry.GeometryType == GeometryType.Polyline)  {  // Remove the graphic from the overlay  _routeGraphicsOverlay.Graphics.Remove(g);  }  }  }  } }