//解决路径 public void SolvePath(string WeightName) { try { int intEdgeUserClassID; int intEdgeUserID; int intEdgeUserSubID; int intEdgeID; IPoint ipFoundEdgePoint; double dblEdgePercent; ITraceFlowSolverGEN ipTraceFlowSolver = new TraceFlowSolverClass() as ITraceFlowSolverGEN; INetSolver ipNetSolver = ipTraceFlowSolver as INetSolver; INetwork ipNetwork = m_ipGeometricNetwork.Network; ipNetSolver.SourceNetwork = ipNetwork; INetElements ipNetElements = ipNetwork as INetElements; int intCount = m_ipPoints.PointCount;//这里的points有值吗? //定义一个边线旗数组 IEdgeFlag[] pEdgeFlagList = new EdgeFlagClass[intCount]; for (int i = 0; i < intCount; i++) { INetFlag ipNetFlag = new EdgeFlagClass() as INetFlag; IPoint ipEdgePoint = m_ipPoints.get_Point(i); //查找输入点的最近的边线 m_ipPointToEID.GetNearestEdge(ipEdgePoint, out intEdgeID, out ipFoundEdgePoint, out dblEdgePercent); ipNetElements.QueryIDs(intEdgeID, esriElementType.esriETEdge, out intEdgeUserClassID, out intEdgeUserID, out intEdgeUserSubID); ipNetFlag.UserClassID = intEdgeUserClassID; ipNetFlag.UserID = intEdgeUserID; ipNetFlag.UserSubID = intEdgeUserSubID; IEdgeFlag pTemp = (IEdgeFlag)(ipNetFlag as IEdgeFlag); pEdgeFlagList[i] = pTemp; } ipTraceFlowSolver.PutEdgeOrigins(ref pEdgeFlagList); INetSchema ipNetSchema = ipNetwork as INetSchema; INetWeight ipNetWeight = ipNetSchema.get_WeightByName(WeightName); INetSolverWeights ipNetSolverWeights = ipTraceFlowSolver as INetSolverWeights; ipNetSolverWeights.FromToEdgeWeight = ipNetWeight; //开始边线的权重 ipNetSolverWeights.ToFromEdgeWeight = ipNetWeight; //终止边线的权重 object[] vaRes = new object[intCount - 1]; //通过findpath得到边线和交汇点的集合 ipTraceFlowSolver.FindPath(esriFlowMethod.esriFMConnected, esriShortestPathObjFn.esriSPObjFnMinSum, out m_ipEnumNetEID_Junctions, out m_ipEnumNetEID_Edges, intCount - 1, ref vaRes); //计算元素成本 m_dblPathCost = 0; for (int i = 0; i < vaRes.Length; i++) { double m_Va = (double)vaRes[i];//我修改过 m_dblPathCost = m_dblPathCost + m_Va; } m_ipPolyline = null; } catch (Exception ex) { Console.WriteLine(ex.Message); } }
public void SolvePath(string WeightName) { int num; ITraceFlowSolver solver = (ITraceFlowSolver) new TraceFlowSolverClass(); INetSolver solver2 = (INetSolver)solver; INetwork network = this.m_ipGeometricNetwork.Network; solver2.SourceNetwork = network; INetElements elements = (INetElements)network; IEdgeFlag[] edgeOrigins = new IEdgeFlag[this.m_ipPoints.PointCount + 1]; for (num = 0; num < this.m_ipPoints.PointCount; num++) { IPoint point; int num2; double num3; int num4; int num5; int num6; INetFlag flag = new EdgeFlagClass(); IPoint inputPoint = this.m_ipPoints.get_Point(num); this.m_ipPointToEID.GetNearestEdge(inputPoint, out num2, out point, out num3); elements.QueryIDs(num2, esriElementType.esriETEdge, out num4, out num5, out num6); flag.UserClassID = num4; flag.UserID = num5; flag.UserSubID = num6; edgeOrigins[num] = (IEdgeFlag)flag; } (solver as ITraceFlowSolverGEN).PutEdgeOrigins(ref edgeOrigins); try { INetSolverWeights weights = (INetSolverWeights)solver; weights.JunctionWeight = this.JunctionWeight; weights.FromToEdgeWeight = this.FromToEdgeWeight; weights.ToFromEdgeWeight = this.ToFromEdgeWeight; } catch { } object[] segmentCosts = new object[this.m_ipPoints.PointCount]; (solver as ITraceFlowSolverGEN).FindPath(esriFlowMethod.esriFMConnected, esriShortestPathObjFn.esriSPObjFnMinSum, out this.m_ipEnumNetEID_Junctions, out this.m_ipEnumNetEID_Edges, this.m_ipPoints.PointCount - 1, ref segmentCosts); this.m_dblPathCost = 0.0; for (num = 0; num < segmentCosts.Length; num++) { this.m_dblPathCost += (double)segmentCosts[num]; } this.m_ipPolyline = null; }
private void SolvePath(string weightName) { //创建ITraceFlowSolverGEN ITraceFlowSolverGEN pTraceFlowSolverGEN = new TraceFlowSolverClass(); INetSolver pNetSolver = pTraceFlowSolverGEN as INetSolver; //初始化用于路径计算的Network INetwork pNetWork = mGeometricNetwork.Network; pNetSolver.SourceNetwork = pNetWork; //获取分析经过的点的个数 int intCount = mPointCollectionNet.PointCount; if (intCount < 1) { return; } INetFlag pNetFlag; //用于存储路径计算得到的边 IEdgeFlag[] pEdgeFlags = new IEdgeFlag[intCount]; IPoint pEdgePoint = new PointClass(); int intEdgeEID; IPoint pFoundEdgePoint; double dblEdgePercent; //用于获取几何网络元素的UserID, UserClassID,UserSubID INetElements pNetElements = pNetWork as INetElements; int intEdgeUserClassID; int intEdgeUserID; int intEdgeUserSubID; for (int i = 0; i < intCount; i++) { pNetFlag = new EdgeFlagClass(); //获取用户点击点 pEdgePoint = mPointCollectionNet.get_Point(i); //获取距离用户点击点最近的边 mPointToEID.GetNearestEdge(pEdgePoint, out intEdgeEID, out pFoundEdgePoint, out dblEdgePercent); if (intEdgeEID <= 0) { continue; } //根据得到的边查询对应的几何网络中的元素UserID, UserClassID,UserSubID pNetElements.QueryIDs(intEdgeEID, esriElementType.esriETEdge, out intEdgeUserClassID, out intEdgeUserID, out intEdgeUserSubID); if (intEdgeUserClassID <= 0 || intEdgeUserID <= 0) { continue; } pNetFlag.UserClassID = intEdgeUserClassID; pNetFlag.UserID = intEdgeUserID; pNetFlag.UserSubID = intEdgeUserSubID; pEdgeFlags[i] = pNetFlag as IEdgeFlag; } //设置路径求解的边 pTraceFlowSolverGEN.PutEdgeOrigins(ref pEdgeFlags); //路径计算权重 INetSchema pNetSchema = pNetWork as INetSchema; INetWeight pNetWeight = pNetSchema.get_WeightByName(weightName); if (pNetWeight == null) { return; } //设置权重,这里双向的权重设为一致 INetSolverWeights pNetSolverWeights = pTraceFlowSolverGEN as INetSolverWeights; pNetSolverWeights.ToFromEdgeWeight = pNetWeight; pNetSolverWeights.FromToEdgeWeight = pNetWeight; object[] arrResults = new object[intCount - 1]; //执行路径计算 pTraceFlowSolverGEN.FindPath(esriFlowMethod.esriFMConnected, esriShortestPathObjFn.esriSPObjFnMinSum, out mEnumNetEID_Junctions, out mEnumNetEID_Edges, intCount - 1, ref arrResults); //获取路径计算总代价(cost) mdblPathCost = 0; for (int i = 0; i < intCount - 1; i++) { mdblPathCost += (double)arrResults[i]; } }
private bool slovePath() { try { double costLength = 0; m_ipPointToEID = new PointToEIDClass(); m_ipPointToEID.SourceMap = m_HookHelper.ActiveView.FocusMap; m_ipPointToEID.GeometricNetwork = m_ipGeometricNetwork; m_ipPointToEID.SnapTolerance = m_HookHelper.ActiveView.Extent.Envelope.Width / 100; INetwork ipNetwork; INetElements ipNetElements; INetFlag ipNetFlag; //IEdgeFlag ipEdgeFlag; IEdgeFlag [] EdgeFlagArray; int pEdgeID; IPoint pLocation; double dblEdgePercent; int iUserClassID, iUserID, iUserSubID; // look up the EID for the current point (this will populate intEdgeID and dblEdgePercent) ipTraceFlowSolver = new TraceFlowSolverClass() as ITraceFlowSolver; //get the inetsolver interface ipNetSolver = ipTraceFlowSolver as INetSolver; ipNetwork = m_ipGeometricNetwork.Network; //set the net solver's source network ipNetSolver.SourceNetwork = ipNetwork; //make edge flags from the points //the INetElements interface is needed to get UserID, UserClassID, //and UserSubID from an element id EdgeFlagArray = new IEdgeFlag[mPointArray.PointCount]; ipNetElements = ipNetwork as INetElements; for (int ii = 0; ii < mPointArray.PointCount; ii++) { ipNetFlag = new EdgeFlagClass(); point = mPointArray.get_Point(ii); m_ipPointToEID.GetNearestEdge(point, out pEdgeID, out pLocation, out dblEdgePercent); //iUserClassID是featureclass ID,userID是objectID,userSubID ipNetElements.QueryIDs(pEdgeID, esriElementType.esriETEdge, out iUserClassID, out iUserID, out iUserSubID); ipNetFlag.UserClassID = iUserClassID; ipNetFlag.UserID = iUserID; ipNetFlag.UserSubID = iUserSubID; EdgeFlagArray[ii] = ipNetFlag as IEdgeFlag; //MessageBox.Show(iUserID.ToString()); } //添加到TraceFlowSolver中 ITraceFlowSolverGEN pTFSolverGEN = ipTraceFlowSolver as ITraceFlowSolverGEN; pTFSolverGEN.PutEdgeOrigins(ref EdgeFlagArray); //get the INetSchema interface INetSchema ipNetSchema = ipNetwork as INetSchema; INetWeight ipNetWeight = ipNetSchema.get_Weight(0); //MessageBox.Show(ipNetWeight.WeightName); INetSolverWeights ipNetSolverWeights = ipTraceFlowSolver as INetSolverWeights; //来回使用同一个权重 ipNetSolverWeights.FromToEdgeWeight = ipNetWeight; ipNetSolverWeights.ToFromEdgeWeight = ipNetWeight; object [] totalCost = new object[mPointArray.PointCount - 1]; pTFSolverGEN.FindPath(esriFlowMethod.esriFMConnected, esriShortestPathObjFn.esriSPObjFnMinSum, out m_ipEnumNetEID_Junctions, out m_ipEnumNetEID_Edges, mPointArray.PointCount - 1, ref totalCost); //MessageBox.Show(totalCost[0].ToString()); for (int ii = 0; ii < totalCost.Length; ii++) { costLength += (double)(totalCost[ii]); } pStatusBar.Panels[0].Text = "水管长度:" + costLength.ToString(); return(true); } catch (Exception e) { MessageBox.Show(e.Message); return(false); } }