commit
903958a22a
@ -3,17 +3,19 @@ using Logging;
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using astar;
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Logger logger = new (LogType.CONSOLE, LogLevel.DEBUG);
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Dictionary<ulong, Node> graph = OpenStreetMap_Importer.Importer.Import(@"", true, logger);
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Graph.Graph graph = OpenStreetMap_Importer.Importer.Import(@"C:\Users\glax\Downloads\oberbayern-latest.osm", true, logger);
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logger.level = LogLevel.DEBUG;
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Random r = new();
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List<Node> path;
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Route _route;
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Node n1, n2;
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do
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{
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do
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{
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n1 = graph[graph.Keys.ElementAt(r.Next(0, graph.Count - 1))];
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n2 = graph[graph.Keys.ElementAt(r.Next(0, graph.Count - 1))];
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} while (!Astar.FindPath(ref graph, n1, n2, out path, logger));
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n1 = graph.NodeAtIndex(r.Next(0, graph.GetNodeCount() - 1));
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n2 = graph.NodeAtIndex(r.Next(0, graph.GetNodeCount() - 1));
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_route = new Astar().FindPath(graph, n1, n2, logger);
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} while (!_route.routeFound);
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logger.Log(LogLevel.INFO, "Press Enter to find new path.");
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} while (Console.ReadKey().Key.Equals(ConsoleKey.Enter));
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@ -1,22 +1,18 @@
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namespace Graph
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{
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public struct Edge
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public class Edge
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{
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public ulong id { get; }
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public Node neighbor { get; }
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public float weight { get; }
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public Edge(Node neighbor, float weight)
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{
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this.neighbor = neighbor;
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this.weight = weight;
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this.id = 0;
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}
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public float time { get; }
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public float distance { get; }
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public Edge(Node neighbor, float weight, ulong id)
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public Edge(Node neighbor, float time, float distance, ulong? id)
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{
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this.neighbor = neighbor;
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this.weight = weight;
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this.id = id;
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this.time = time;
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this.distance = distance;
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this.id = (id != null) ? id.Value : 0;
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}
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}
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}
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61
Graph/Graph.cs
Normal file
61
Graph/Graph.cs
Normal file
@ -0,0 +1,61 @@
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namespace Graph
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{
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public class Graph
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{
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private Dictionary<ulong, Node> nodes { get; }
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public Graph()
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{
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this.nodes = new();
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}
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public bool AddNode(ulong id, Node n)
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{
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return this.nodes.TryAdd(id, n);
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}
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public Node NodeAtIndex(int i)
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{
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return this.nodes.Values.ToArray()[i];
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}
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public int GetNodeCount()
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{
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return this.nodes.Count;
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}
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public Node? GetNode(ulong id)
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{
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if (this.nodes.TryGetValue(id, out Node? n))
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return n;
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else
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return null;
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}
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public bool ContainsNode(ulong id)
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{
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return this.nodes.ContainsKey(id);
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}
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public bool ContainsNode(Node n)
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{
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return this.nodes.Values.Contains(n);
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}
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public bool RemoveNode(ulong id)
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{
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return this.nodes.Remove(id);
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}
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public bool RemoveNode(Node n)
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{
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throw new NotImplementedException();
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}
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public Node ClosestNodeToCoordinates(float lat, float lon)
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{
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throw new NotImplementedException();
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}
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}
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}
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@ -4,22 +4,22 @@
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{
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public float lat { get; }
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public float lon { get; }
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public HashSet<Edge> edges { get; }
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public Node previousNode { get; set; }
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public float goalDistance { get; set; }
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public float pathLength { get; set; }
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public Node(float lat, float lon)
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{
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this.lat = lat;
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this.lon = lon;
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this.edges = new();
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this.previousNode = nullnode;
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this.goalDistance = float.MaxValue;
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this.pathLength = float.MaxValue;
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}
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public static Node nullnode = new(float.NaN, float.NaN);
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public Edge? GetEdgeToNode(Node n)
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{
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foreach (Edge e in this.edges)
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if (e.neighbor == n)
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return e;
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return null;
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}
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}
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}
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@ -1,15 +1,15 @@
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namespace Graph{
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namespace Graph.Utils
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{
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public struct Utils
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{
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public static float DistanceBetweenNodes(Node n1, Node n2)
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public static double DistanceBetweenNodes(Node n1, Node n2)
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{
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return DistanceBetweenCoordinates(n1.lat, n1.lon, n2.lat, n2.lon);
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}
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public static float DistanceBetweenCoordinates(float lat1, float lon1, float lat2, float lon2)
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public static double DistanceBetweenCoordinates(float lat1, float lon1, float lat2, float lon2)
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{
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const int earthRadius = 6371;
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const int earthRadius = 6371000;
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double differenceLat = DegreesToRadians(lat2 - lat1);
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double differenceLon = DegreesToRadians(lon2 - lon1);
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@ -19,7 +19,7 @@
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double a = Math.Sin(differenceLat / 2) * Math.Sin(differenceLat / 2) + Math.Sin(differenceLon / 2) * Math.Sin(differenceLon / 2) * Math.Cos(lat1Rads) * Math.Cos(lat2Rads);
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double c = 2 * Math.Atan2(Math.Sqrt(a), Math.Sqrt(1 - a));
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return Convert.ToSingle(earthRadius * c);
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return earthRadius * c;
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}
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private static double DegreesToRadians(double deg)
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@ -4,6 +4,7 @@
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using Logging;
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using System.Xml;
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using Graph;
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using Graph.Utils;
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namespace OpenStreetMap_Importer
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{
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@ -16,29 +17,30 @@ namespace OpenStreetMap_Importer
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IgnoreComments = true
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};
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public static Dictionary<ulong, Node> Import(string filePath = "", bool onlyJunctions = true, Logger? logger = null)
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public static Graph.Graph Import(string filePath = "", bool onlyJunctions = true, Logger? logger = null)
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{
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/*
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* Count Node occurances when tag is "highway"
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*/
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logger?.Log(LogLevel.INFO, "Counting Node-Occurances...");
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logger?.Log(LogLevel.DEBUG, "Opening File...");
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Stream mapData = File.Exists(filePath) ? new FileStream(filePath, FileMode.Open, FileAccess.Read) : new MemoryStream(OSM_Data.map);
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logger?.Log(LogLevel.INFO, "Counting Node-Occurances...");
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Dictionary<ulong, ushort> occuranceCount = CountNodeOccurances(mapData, logger);
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mapData.Close();
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logger?.Log(LogLevel.DEBUG, "Way Nodes: {0}", occuranceCount.Count);
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/*
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* Import Nodes and Edges
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*/
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mapData.Position = 0;
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logger?.Log(LogLevel.INFO, "Importing Graph...");
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mapData = File.Exists(filePath) ? new FileStream(filePath, FileMode.Open, FileAccess.Read) : new MemoryStream(OSM_Data.map);
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Dictionary<ulong, Node> graph = CreateGraph(mapData, occuranceCount, onlyJunctions, logger);
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Graph.Graph _graph = CreateGraph(mapData, occuranceCount, onlyJunctions, logger);
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logger?.Log(LogLevel.DEBUG, "Loaded Nodes: {0}", _graph.GetNodeCount());
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mapData.Close();
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occuranceCount.Clear();
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GC.Collect();
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logger?.Log(LogLevel.DEBUG, "Loaded Nodes: {0}", graph.Count);
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return graph;
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return _graph;
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}
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private static Dictionary<ulong, ushort> CountNodeOccurances(Stream mapData, Logger? logger = null)
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@ -57,6 +59,7 @@ namespace OpenStreetMap_Importer
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_isHighway = false;
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_currentIds.Clear();
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_wayReader = _reader.ReadSubtree();
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logger?.Log(LogLevel.VERBOSE, "WAY: {0}", _reader.GetAttribute("id"));
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while (_wayReader.Read())
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{
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if (_reader.Name == "tag" && _reader.GetAttribute("k").Equals("highway"))
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@ -65,6 +68,7 @@ namespace OpenStreetMap_Importer
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{
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if (!Enum.Parse(typeof(Way.type), _reader.GetAttribute("v"), true).Equals(Way.type.NONE))
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_isHighway = true;
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logger?.Log(LogLevel.VERBOSE, "Highway: {0}", _reader.GetAttribute("v"));
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}
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catch (ArgumentException) { };
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}
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@ -73,6 +77,7 @@ namespace OpenStreetMap_Importer
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try
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{
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_currentIds.Add(Convert.ToUInt64(_reader.GetAttribute("ref")));
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logger?.Log(LogLevel.VERBOSE, "node-ref: {0}", _reader.GetAttribute("ref"));
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}
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catch (FormatException) { };
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}
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@ -93,13 +98,12 @@ namespace OpenStreetMap_Importer
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return _occurances;
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}
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private static Dictionary<ulong, Node> CreateGraph(Stream mapData, Dictionary<ulong, ushort> occuranceCount, bool onlyJunctions, Logger? logger = null)
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private static Graph.Graph CreateGraph(Stream mapData, Dictionary<ulong, ushort> occuranceCount, bool onlyJunctions, Logger? logger = null)
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{
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Dictionary<ulong, Node> _tempAll = new();
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Dictionary<ulong, Node> _graph = new();
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Graph.Graph _graph = new();
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Way _currentWay;
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Node _n1, _n2, _currentNode;
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float _weight, _distance = 0;
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float _time, _distance = 0;
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XmlReader _reader = XmlReader.Create(mapData, readerSettings);
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XmlReader _wayReader;
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@ -114,7 +118,7 @@ namespace OpenStreetMap_Importer
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{
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float lat = Convert.ToSingle(_reader.GetAttribute("lat").Replace('.', ','));
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float lon = Convert.ToSingle(_reader.GetAttribute("lon").Replace('.', ','));
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_tempAll.Add(id, new Node(lat, lon));
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_graph.AddNode(id, new Node(lat, lon));
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logger?.Log(LogLevel.VERBOSE, "NODE {0} {1} {2} {3}", id, lat, lon, occuranceCount[id]);
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}
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}
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@ -122,6 +126,7 @@ namespace OpenStreetMap_Importer
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{
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_wayReader = _reader.ReadSubtree();
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_currentWay = new();
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logger?.Log(LogLevel.VERBOSE, "WAY: {0}", _reader.GetAttribute("id"));
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while (_wayReader.Read())
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{
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_wayReader = _reader.ReadSubtree();
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@ -139,7 +144,7 @@ namespace OpenStreetMap_Importer
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{
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ulong _id = Convert.ToUInt64(_reader.GetAttribute("ref"));
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_currentWay.nodeIds.Add(_id);
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logger?.Log(LogLevel.VERBOSE, "nd: {0}", _id);
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logger?.Log(LogLevel.VERBOSE, "node-ref: {0}", _id);
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}
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}
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}
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@ -147,69 +152,62 @@ namespace OpenStreetMap_Importer
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if (!_currentWay.GetHighwayType().Equals(Way.type.NONE))
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{
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logger?.Log(LogLevel.VERBOSE, "WAY Nodes: {0} Type: {1}", _currentWay.nodeIds.Count, _currentWay.GetHighwayType());
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logger?.Log(LogLevel.VERBOSE, "WAY Nodes-count: {0} Type: {1}", _currentWay.nodeIds.Count, _currentWay.GetHighwayType());
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if (!onlyJunctions)
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{
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for (int _nodeIdIndex = 0; _nodeIdIndex < _currentWay.nodeIds.Count - 1; _nodeIdIndex++)
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{
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_n1 = _tempAll[_currentWay.nodeIds[_nodeIdIndex]];
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_n2 = _tempAll[_currentWay.nodeIds[_nodeIdIndex + 1]];
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_weight = Utils.DistanceBetweenNodes(_n1, _n2) * 1000 / _currentWay.GetMaxSpeed();
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_n1 = _graph.GetNode(_currentWay.nodeIds[_nodeIdIndex]);
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_n2 = _graph.GetNode(_currentWay.nodeIds[_nodeIdIndex + 1]);
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_distance = Convert.ToSingle(Utils.DistanceBetweenNodes(_n1, _n2));
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_time = _distance / _currentWay.GetMaxSpeed();
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if (!_currentWay.IsOneWay())
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{
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_n1.edges.Add(new Edge(_n2, _weight));
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_n2.edges.Add(new Edge(_n1, _weight));
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_n1.edges.Add(new Edge(_n2, _time, _distance, _currentWay.GetId()));
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_n2.edges.Add(new Edge(_n1, _time, _distance, _currentWay.GetId()));
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}
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else if (_currentWay.IsForward())
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{
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_n1.edges.Add(new Edge(_n2, _weight));
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_n1.edges.Add(new Edge(_n2, _time, _distance, _currentWay.GetId()));
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}
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else
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{
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_n2.edges.Add(new Edge(_n1, _weight));
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_n2.edges.Add(new Edge(_n1, _time, _distance, _currentWay.GetId()));
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}
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logger?.Log(LogLevel.VERBOSE, "Add Edge: {0} & {1} Weight: {2}", _currentWay.nodeIds[_nodeIdIndex], _currentWay.nodeIds[_nodeIdIndex + 1], _time);
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}
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_graph = _tempAll;
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}
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else
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{
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if (!_tempAll.TryGetValue(_currentWay.nodeIds[0], out _n1))
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{
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_n1 = _graph[_currentWay.nodeIds[0]];
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}
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else
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{
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_graph.TryAdd(_currentWay.nodeIds[0], _n1);
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_tempAll.Remove(_currentWay.nodeIds[0]);
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}
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_n1 = _graph.GetNode(_currentWay.nodeIds[0]);
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_currentNode = _n1;
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for(int _nodeIdIndex = 0; _nodeIdIndex < _currentWay.nodeIds.Count - 1; _nodeIdIndex++)
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{
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if (!_tempAll.TryGetValue(_currentWay.nodeIds[_nodeIdIndex + 1], out _n2))
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_n2 = _graph[_currentWay.nodeIds[_nodeIdIndex + 1]];
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_distance += Utils.DistanceBetweenNodes(_currentNode, _n2);
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_n2 = _graph.GetNode(_currentWay.nodeIds[_nodeIdIndex + 1]);
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_distance += Convert.ToSingle(Utils.DistanceBetweenNodes(_currentNode, _n2));
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if (occuranceCount[_currentWay.nodeIds[_nodeIdIndex]] > 1 || _nodeIdIndex == _currentWay.nodeIds.Count - 2) //junction found
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{
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_weight = _distance * 1000 / _currentWay.GetMaxSpeed();
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_distance = 0;
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_graph.TryAdd(_currentWay.nodeIds[_nodeIdIndex + 1], _n2);
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_time = _distance / _currentWay.GetMaxSpeed();
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if (!_currentWay.IsOneWay())
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{
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_n1.edges.Add(new Edge(_n2, _weight, _currentWay.GetId()));
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_n2.edges.Add(new Edge(_n1, _weight, _currentWay.GetId()));
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_n1.edges.Add(new Edge(_n2, _time, _distance, _currentWay.GetId()));
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_n2.edges.Add(new Edge(_n1, _time, _distance, _currentWay.GetId()));
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}
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else if (_currentWay.IsForward())
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{
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_n1.edges.Add(new Edge(_n2, _weight, _currentWay.GetId()));
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_n1.edges.Add(new Edge(_n2, _time, _distance, _currentWay.GetId()));
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}
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else
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{
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_n2.edges.Add(new Edge(_n1, _weight, _currentWay.GetId()));
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_n2.edges.Add(new Edge(_n1, _time, _distance, _currentWay.GetId()));
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}
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_distance = 0;
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logger?.Log(LogLevel.VERBOSE, "Add Edge: {0} & {1} Weight: {2}", _currentWay.nodeIds[_nodeIdIndex], _currentWay.nodeIds[_nodeIdIndex + 1], _time);
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}
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else
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{
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_tempAll.Remove(_currentWay.nodeIds[_nodeIdIndex]);
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_graph.RemoveNode(_currentWay.nodeIds[_nodeIdIndex]); //Not a junction
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}
|
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_currentNode = _n2;
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}
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|
165
astar/Astar.cs
165
astar/Astar.cs
@ -1,53 +1,39 @@
|
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using Logging;
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using Graph;
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using Graph.Utils;
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|
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namespace astar
|
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{
|
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public class Astar
|
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{
|
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private Dictionary<Node, float> timeRequired = new();
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private Dictionary<Node, float> goalDistance = new();
|
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private Dictionary<Node, Node> previousNode = new();
|
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|
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/*
|
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* Resets the calculated previous nodes and distance to goal
|
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*/
|
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private static void Reset(ref Dictionary<ulong, Node> nodes)
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public Route FindPath(Graph.Graph graph, Node start, Node goal, Logger? logger)
|
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{
|
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foreach(Node n in nodes.Values)
|
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{
|
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n.previousNode = Node.nullnode;
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n.goalDistance = float.MaxValue;
|
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n.pathLength = float.MaxValue;
|
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}
|
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}
|
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|
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/*
|
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*
|
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*/
|
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public static bool FindPath(ref Dictionary<ulong, Node> nodes, Node start, Node goal, out List<Node> path, Logger? logger)
|
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{
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path = new List<Node>();
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logger?.Log(LogLevel.INFO, "From {0} - {1} to {2} - {3} Distance {4}", start.lat, start.lon, goal.lat, goal.lon, Utils.DistanceBetweenNodes(start, goal));
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Reset(ref nodes);
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logger?.Log(LogLevel.INFO, "From {0:000.00000}#{1:000.00000} to {2:000.00000}#{3:000.00000} Great-Circle {4:00000.00}km", start.lat, start.lon, goal.lat, goal.lon, Utils.DistanceBetweenNodes(start, goal)/1000);
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List<Node> toVisit = new();
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toVisit.Add(start);
|
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Node currentNode = start;
|
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start.pathLength = 0;
|
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start.goalDistance = Utils.DistanceBetweenNodes(start, goal);
|
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while (toVisit.Count > 0 && toVisit[0].pathLength < goal.pathLength)
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SetTimeRequiredToReach(start, 0);
|
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SetDistanceToGoal(start, Convert.ToSingle(Utils.DistanceBetweenNodes(start, goal)));
|
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while (toVisit.Count > 0 && GetTimeRequiredToReach(toVisit[0]) < GetTimeRequiredToReach(goal))
|
||||
{
|
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if(currentNode == goal)
|
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{
|
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logger?.Log(LogLevel.INFO, "Way found, checking for shorter option.");
|
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}
|
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currentNode = toVisit.First();
|
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logger?.Log(LogLevel.VERBOSE, "toVisit-length: {0} path-length: {1} goal-distance: {2}", toVisit.Count, currentNode.pathLength, currentNode.goalDistance);
|
||||
logger?.Log(LogLevel.VERBOSE, "toVisit-length: {0} path-length: {1} goal-distance: {2}", toVisit.Count, timeRequired[currentNode], goalDistance[currentNode]);
|
||||
//Check all neighbors of current node
|
||||
foreach (Edge e in currentNode.edges)
|
||||
{
|
||||
if (e.neighbor.pathLength > currentNode.pathLength + e.weight)
|
||||
if (GetTimeRequiredToReach(e.neighbor) > GetTimeRequiredToReach(currentNode) + e.time)
|
||||
{
|
||||
e.neighbor.goalDistance = Utils.DistanceBetweenNodes(e.neighbor, goal);
|
||||
e.neighbor.pathLength = currentNode.pathLength + e.weight;
|
||||
e.neighbor.previousNode = currentNode;
|
||||
SetDistanceToGoal(e.neighbor, Convert.ToSingle(Utils.DistanceBetweenNodes(e.neighbor, goal)));
|
||||
SetTimeRequiredToReach(e.neighbor, GetTimeRequiredToReach(currentNode) + e.time);
|
||||
SetPreviousNodeOf(e.neighbor, currentNode);
|
||||
toVisit.Add(e.neighbor);
|
||||
}
|
||||
}
|
||||
@ -55,41 +41,62 @@ namespace astar
|
||||
toVisit.Remove(currentNode); //"Mark" as visited
|
||||
toVisit.Sort(CompareDistance);
|
||||
}
|
||||
if(goal.previousNode != Node.nullnode)
|
||||
|
||||
if(GetPreviousNodeOf(goal) != null)
|
||||
{
|
||||
logger?.Log(LogLevel.INFO, "Way found, shortest option.");
|
||||
currentNode = goal;
|
||||
}
|
||||
else
|
||||
{
|
||||
logger?.Log(LogLevel.INFO, "No path between {0} - {1} and {2} - {3}", start.lat, start.lon, goal.lat, goal.lon);
|
||||
return false;
|
||||
logger?.Log(LogLevel.INFO, "No path between {0:000.00000}#{1:000.00000} and {2:000.00000}#{3:000.00000}", start.lat, start.lon, goal.lat, goal.lon);
|
||||
return new Route(new List<Step>(), false, float.MaxValue, float.MaxValue);
|
||||
}
|
||||
|
||||
path.Add(goal);
|
||||
List<Node> tempNodes = new();
|
||||
tempNodes.Add(goal);
|
||||
while(currentNode != start)
|
||||
{
|
||||
path.Add(currentNode.previousNode);
|
||||
currentNode = currentNode.previousNode;
|
||||
#pragma warning disable CS8604, CS8600 // Route was found, so has to have a previous node
|
||||
tempNodes.Add(GetPreviousNodeOf(currentNode));
|
||||
currentNode = GetPreviousNodeOf(currentNode);
|
||||
#pragma warning restore CS8604, CS8600
|
||||
}
|
||||
path.Reverse();
|
||||
tempNodes.Reverse();
|
||||
|
||||
List<Step> steps = new();
|
||||
float totalDistance = 0;
|
||||
|
||||
for(int i = 0; i < tempNodes.Count - 1; i++)
|
||||
{
|
||||
#pragma warning disable CS8600, CS8604 // Route was found, so has to have an edge
|
||||
Edge e = tempNodes[i].GetEdgeToNode(tempNodes[i + 1]);
|
||||
steps.Add(new Step(tempNodes[i], e, GetTimeRequiredToReach(tempNodes[i]), GetDistanceToGoal(tempNodes[i])));
|
||||
#pragma warning restore CS8600, CS8604
|
||||
totalDistance += e.distance;
|
||||
}
|
||||
|
||||
Route _route = new Route(steps, true, totalDistance, GetTimeRequiredToReach(goal));
|
||||
|
||||
logger?.Log(LogLevel.INFO, "Path found");
|
||||
float distance = 0;
|
||||
Node prev = Node.nullnode;
|
||||
TimeSpan totalTime = TimeSpan.FromSeconds(path.ElementAt(path.Count - 1).pathLength);
|
||||
|
||||
foreach (Node n in path)
|
||||
|
||||
if(logger?.level > LogLevel.INFO)
|
||||
{
|
||||
if(!prev.Equals(Node.nullnode))
|
||||
|
||||
float time = 0;
|
||||
float distance = 0;
|
||||
|
||||
logger?.Log(LogLevel.DEBUG, "Route Distance: {0:00000.00km} Time: {1}", _route.distance/1000, TimeSpan.FromSeconds(_route.time));
|
||||
for(int i = 0; i < _route.steps.Count; i++)
|
||||
{
|
||||
distance += Utils.DistanceBetweenNodes(prev, n);
|
||||
Step s = _route.steps[i];
|
||||
time += s.edge.time;
|
||||
distance += s.edge.distance;
|
||||
logger?.Log(LogLevel.DEBUG, "Step {0:000} From {1:000.00000}#{2:000.00000} To {3:000.00000}#{4:000.00000} along {5:0000000000} after {6} and {7:0000.00}km", i, s.start.lat, s.start.lon, s.edge.neighbor.lat, s.edge.neighbor.lon, s.edge.id, TimeSpan.FromSeconds(timeRequired[s.start]), distance/1000);
|
||||
}
|
||||
prev = n;
|
||||
logger?.Log(LogLevel.DEBUG, "lat {0:000.00000} lon {1:000.00000} traveled {5:0000.00}km in {2:G} / {3:G} Great-Circle to Goal {4:0000.00}", n.lat, n.lon, TimeSpan.FromSeconds(n.pathLength), totalTime, n.goalDistance, distance);
|
||||
}
|
||||
|
||||
|
||||
return true;
|
||||
return _route;
|
||||
}
|
||||
|
||||
/*
|
||||
@ -98,15 +105,15 @@ namespace astar
|
||||
* 0 => n1 equal n2
|
||||
* 1 => n1 larger n2
|
||||
*/
|
||||
private static int CompareDistance(Node n1, Node n2)
|
||||
private int CompareDistance(Node n1, Node n2)
|
||||
{
|
||||
if (n1 == null || n2 == null)
|
||||
return 0;
|
||||
else
|
||||
{
|
||||
if (n1.goalDistance < n2.goalDistance)
|
||||
if (GetDistanceToGoal(n1) < GetDistanceToGoal(n2))
|
||||
return -1;
|
||||
else if (n1.goalDistance > n2.goalDistance)
|
||||
else if (GetDistanceToGoal(n1) > GetDistanceToGoal(n2))
|
||||
return 1;
|
||||
else return 0;
|
||||
}
|
||||
@ -118,18 +125,72 @@ namespace astar
|
||||
* 0 => n1 equal n2
|
||||
* 1 => n1 larger n2
|
||||
*/
|
||||
private static int ComparePathLength(Node n1, Node n2)
|
||||
private int ComparePathLength(Node n1, Node n2)
|
||||
{
|
||||
if (n1 == null || n2 == null)
|
||||
return 0;
|
||||
else
|
||||
{
|
||||
if (n1.pathLength < n2.pathLength)
|
||||
if (GetTimeRequiredToReach(n1) < GetTimeRequiredToReach(n2))
|
||||
return -1;
|
||||
else if (n1.pathLength > n2.pathLength)
|
||||
else if (GetTimeRequiredToReach(n1) > GetTimeRequiredToReach(n2))
|
||||
return 1;
|
||||
else return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private float GetTimeRequiredToReach(Node n)
|
||||
{
|
||||
if (timeRequired.TryGetValue(n, out float t))
|
||||
{
|
||||
return t;
|
||||
}
|
||||
else
|
||||
{
|
||||
return float.MaxValue;
|
||||
}
|
||||
}
|
||||
|
||||
private void SetTimeRequiredToReach(Node n, float t)
|
||||
{
|
||||
if (!timeRequired.TryAdd(n, t))
|
||||
timeRequired[n] = t;
|
||||
}
|
||||
|
||||
private float GetDistanceToGoal(Node n)
|
||||
{
|
||||
if (goalDistance.TryGetValue(n, out float t))
|
||||
{
|
||||
return t;
|
||||
}
|
||||
else
|
||||
{
|
||||
return float.MaxValue;
|
||||
}
|
||||
}
|
||||
|
||||
private void SetDistanceToGoal(Node n, float d)
|
||||
{
|
||||
if (!goalDistance.TryAdd(n, d))
|
||||
goalDistance[n] = d;
|
||||
}
|
||||
|
||||
private Node? GetPreviousNodeOf(Node n)
|
||||
{
|
||||
if(previousNode.TryGetValue(n, out Node? t))
|
||||
{
|
||||
return t;
|
||||
}else
|
||||
{
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
private void SetPreviousNodeOf(Node n, Node p)
|
||||
{
|
||||
if (!previousNode.TryAdd(n, p))
|
||||
previousNode[n] = p;
|
||||
}
|
||||
}
|
||||
}
|
36
astar/Route.cs
Normal file
36
astar/Route.cs
Normal file
@ -0,0 +1,36 @@
|
||||
using Graph;
|
||||
namespace astar
|
||||
{
|
||||
public class Route
|
||||
{
|
||||
public List<Step> steps { get; }
|
||||
public bool routeFound { get; }
|
||||
public float distance { get; }
|
||||
public float time { get; }
|
||||
|
||||
|
||||
public Route(List<Step> steps, bool routeFound, float distance, float timeRequired)
|
||||
{
|
||||
this.steps = steps;
|
||||
this.routeFound = routeFound;
|
||||
this.distance = distance;
|
||||
this.time = timeRequired;
|
||||
}
|
||||
}
|
||||
|
||||
public struct Step
|
||||
{
|
||||
public Node start { get; }
|
||||
public Edge edge { get; }
|
||||
|
||||
public float timeRequired { get; }
|
||||
public float goalDistance { get; }
|
||||
public Step(Node start, Edge route, float timeRequired, float goalDistance)
|
||||
{
|
||||
this.start = start;
|
||||
this.edge = route;
|
||||
this.timeRequired = timeRequired;
|
||||
this.goalDistance = goalDistance;
|
||||
}
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue
Block a user