ArcEngine最短路径分C.doc

ArcEngine 最短路径分C# using System; using ESRI.ArcGIS.Carto; using ESRI.ArcGIS.Geometry; using ESRI.ArcGIS.Geodatabase; using ESRI.ArcGIS.NetworkAnalysis; namespace GisEditor { /// summary /// 最短路径分析 /// /summary public class ClsPathFinder { private IGeometricNetwork m_ipGeometricNetwork; private IMap m_ipMap; private IPointCollection m_ipPoints; private IPointToEID m_ipPointToEID; private double m_dblPathCost =0; private IEnumNetEID m_ipEnumNetEID_Junctions; private IEnumNetEID m_ipEnumNetEID_Edges; private IPolyline m_ipPolyline; #region Public Function //返回和设置当前地图 public IMap SetOrGetMap { set{ m_ipMap = value;} get{return m_ipMap;} } //打开几何数据集的网络工作空间 public void OpenFeatureDatasetNetwork(IFeatureDataset FeatureDataset) { CloseWorkspace(); if (!InitializeNetworkAndMap(FeatureDataset)) Console.WriteLine( 打开network出错); } //输入点的集合 public IPointCollection StopPoints { set{m_ipPoints= value;} get{return m_ipPoints;} } //路径成本 public double PathCost { get {return m_dblPathCost;} } //返回路径的几何体 public IPolyline PathPolyLine() { IEIDInfo ipEIDInfo; IGeometry ipGeometry; if(m_ipPolyline!=null)return m_ipPolyline; m_ipPolyline = new PolylineClass(); IGeometryCollection ipNewGeometryColl = m_ipPolyline as IGeometryCollection; ISpatialReference ipSpatialReference = m_ipMap.SpatialReference; IEIDHelper ipEIDHelper = new EIDHelperClass(); ipEIDHelper.GeometricNetwork = m_ipGeometricNetwork; ipEIDHelper.OutputSpatialReference = ipSpatialReference; ipEIDHelper.ReturnGeometries = true; IEnumEIDInfo ipEnumEIDInfo = ipEIDHelper.CreateEnumEIDInfo(m_ipEnumNetEID_Edges); int count = ipEnumEIDInfo.Count; ipEnumEIDInfo.Reset(); for(int i =0;icount;i++) { ipEIDInfo = ipEnumEIDInfo.Next(); ipGeometry = ipEIDInfo.Geometry; ipNewGeometryColl.AddGeometryCollection( ipGeometry as IGeometryCollection); }