/// <summary>
/// Get IEnumNetEID from List of IEIDInfo
/// </summary>
/// <param name="eidInfos">list of IEIDInfo</param>
/// <param name="elementType">element type of eid</param>
/// <returns>object IEnumNetEID</returns>
internal static IEnumNetEID GetEnumNetEID(List <IEIDInfo> eidInfos, esriElementType elementType)
{
IEnumNetEIDBuilderGEN enumNetEIDBuilder = new EnumNetEIDArrayClass();
enumNetEIDBuilder.ElementType = elementType;
foreach (IEIDInfo eidInfo in eidInfos)
{
enumNetEIDBuilder.Add(eidInfo.EID);
}
return(enumNetEIDBuilder as IEnumNetEID);
}
/// <summary>
/// Builds the <see cref="IEnumNetEID" /> from the specified list of elements.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="elementType">Type of the element.</param>
/// <param name="eids">The network element IDs.</param>
/// <returns>
/// A <see cref="IEnumNetEID" /> from the list of elements.
/// </returns>
/// <exception cref="System.ArgumentNullException">eids</exception>
public static IEnumNetEID CreateEnumNetEID(this IGeometricNetwork source, esriElementType elementType, params int[] eids)
{
if (source == null)
{
return(null);
}
if (eids == null)
{
throw new ArgumentNullException("eids");
}
IEnumNetEIDBuilderGEN builder = new EnumNetEIDArrayClass();
builder.ElementType = elementType;
builder.Network = source.Network;
builder.set_EIDs(ref eids);
return((IEnumNetEID)builder);
}
private void ResultBtn_Click(object sender, EventArgs e)
{
try
{
#region 设置管点分析分析条件
//为追踪任务分析器设置管点
IJunctionFlag[] arrayJunctionFlag = new IJunctionFlag[listJunctionsFlag.Count];
for (int i = 0; i < arrayJunctionFlag.Length; i++)
{
arrayJunctionFlag[i] = listJunctionsFlag[i];
}
traceFlowsolverGen.PutJunctionOrigins(ref arrayJunctionFlag);
//为追踪任务分析器设置管线
IEdgeFlag[] arrayEdgeFlag = new IEdgeFlag[listEdgeFlag.Count];
for (int i = 0; i < arrayEdgeFlag.Length; i++)
{
traceFlowsolverGen.PutEdgeOrigins(ref arrayEdgeFlag);
}
//为管点分析器设置障碍点
INetElementBarriersGEN netElementBarriersGEN = new NetElementBarriersClass();
netElementBarriersGEN.Network = m_GeometryNetwork.Network;
if (JunctionBarrierEIDs.Count > 0)
{
int[] junctionBarrierEIDs = new int[JunctionBarrierEIDs.Count];
for (int j = 0; j < junctionBarrierEIDs.Length; j++)
{
junctionBarrierEIDs[j] = JunctionBarrierEIDs[j];
}
netElementBarriersGEN.ElementType = esriElementType.esriETJunction;
netElementBarriersGEN.SetBarriersByEID(ref junctionBarrierEIDs);
netsolver.set_ElementBarriers(esriElementType.esriETJunction, netElementBarriersGEN as INetElementBarriers);
}
else //否则将管点设置为空
{
netsolver.set_ElementBarriers(esriElementType.esriETJunction, null);
}
//未管点分析器设置障碍线
if (EdgeBarrierEIDs.Count > 0)
{
int[] edgeBarrierEIDs = new int[EdgeBarrierEIDs.Count];
for (int j = 0; j < EdgeBarrierEIDs.Count; j++)
{
edgeBarrierEIDs[j] = EdgeBarrierEIDs[j];
}
netElementBarriersGEN.ElementType = esriElementType.esriETEdge;
netElementBarriersGEN.SetBarriersByEID(ref edgeBarrierEIDs);
netsolver.set_ElementBarriers(esriElementType.esriETEdge, netElementBarriersGEN as INetElementBarriers);
}
else //否则将管线设置为空
{
netsolver.set_ElementBarriers(esriElementType.esriETEdge, null);
}
#endregion
//定义相关变量
IEnumNetEID junctionEIDs = new EnumNetEIDArrayClass();
IEnumNetEID edgeEIDs = new EnumNetEIDArrayClass();
object[] segmentsCosts = null;
object totalCost = null;
int Counts = -1;
#region 各种几何网络分析的结果
switch (this.AnalysisCategoryCmbx.SelectedIndex)
{
//查询共同祖先
case 0:
traceFlowsolverGen.FindCommonAncestors(esriFlowElements.esriFEJunctionsAndEdges, out junctionEIDs, out edgeEIDs);
break;
//查找相连接的网络要素
case 1:
traceFlowsolverGen.FindFlowElements(esriFlowMethod.esriFMConnected, esriFlowElements.esriFEJunctionsAndEdges, out junctionEIDs, out edgeEIDs);
break;
//查找网络中连接的环
case 2:
traceFlowsolverGen.FindCircuits(esriFlowElements.esriFEJunctionsAndEdges, out junctionEIDs, out edgeEIDs);
break;
//查找未连接的网络要素
case 3:
traceFlowsolverGen.FindFlowUnreachedElements(esriFlowMethod.esriFMConnected, esriFlowElements.esriFEJunctionsAndEdges, out junctionEIDs, out edgeEIDs);
break;
//查找上游路径，同时跟踪耗费
case 4:
Counts = GetSegmentCounts();
segmentsCosts = new object[Counts];
traceFlowsolverGen.FindSource(esriFlowMethod.esriFMUpstream, esriShortestPathObjFn.esriSPObjFnMinSum, out junctionEIDs, out edgeEIDs, Counts, ref segmentsCosts);
break;
//获取网络路径，追踪网络耗费。count比所有的的标识总数少一个，但如果管点和管线标识同时存在的时候该功能不可用
case 5:
if (listEdgeFlag.Count > 0 && listJunctionsFlag.Count > 0)
{
break;
}
else if (listJunctionsFlag.Count > 0)
{
Counts = listJunctionsFlag.Count - 1;
}
else if (listEdgeFlag.Count > 0)
{
Counts = listEdgeFlag.Count - 1;
}
else
{
break;
}
segmentsCosts = new object[Counts];
traceFlowsolverGen.FindPath(esriFlowMethod.esriFMConnected, esriShortestPathObjFn.esriSPObjFnMinSum, out junctionEIDs, out edgeEIDs, Counts, ref segmentsCosts);
break;
//下游追踪
case 6:
traceFlowsolverGen.FindFlowElements(esriFlowMethod.esriFMDownstream, esriFlowElements.esriFEJunctionsAndEdges, out junctionEIDs, out edgeEIDs);
break;
//查找上游路径消耗，同时获取网络追踪的耗费
case 7:
totalCost = new object();
traceFlowsolverGen.FindAccumulation(esriFlowMethod.esriFMUpstream, esriFlowElements.esriFEJunctionsAndEdges, out junctionEIDs, out edgeEIDs, out totalCost);
break;
//上游追踪
case 8:
Counts = GetSegmentCounts();
segmentsCosts = new object[Counts];
traceFlowsolverGen.FindSource(esriFlowMethod.esriFMUpstream, esriShortestPathObjFn.esriSPObjFnMinSum, out junctionEIDs, out edgeEIDs, Counts, ref segmentsCosts);
break;
default:
break;
}
#endregion
//绘制结果图像
DrawTraceRsult(junctionEIDs, edgeEIDs);
this.Mapcontrol.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, this.Mapcontrol.ActiveView.Extent);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
void ITraceTask.OnTraceExecution()
{
// prepare the network solver
ITraceFlowSolverGEN tfs = UTIL_coreTraceSetup();
if (tfs == null)
{
return;
}
// perform the trace task
IEnumNetEID resultJuncs, resultEdges;
ITraceTasks traceTasks = m_utilNetExt as ITraceTasks;
esriFlowElements flowElements = traceTasks.TraceFlowElements;
if (traceTasks.TraceEnds)
{
// find the features stopping the trace
tfs.FindFlowEndElements(esriFlowMethod.esriFMUpstream, flowElements, out resultJuncs, out resultEdges);
}
else
{
// return the traced features
tfs.FindFlowElements(esriFlowMethod.esriFMUpstream, flowElements, out resultJuncs, out resultEdges);
}
// copy the results to the class level
INetworkAnalysisExt nax = m_utilNetExt as INetworkAnalysisExt;
if (resultJuncs == null)
{
// junctions were not returned -- create an empty enumeration
IEnumNetEIDBuilder eidBuilder = new EnumNetEIDArrayClass();
eidBuilder.Network = nax.CurrentNetwork.Network;
eidBuilder.ElementType = esriElementType.esriETJunction;
m_resultJunctions = eidBuilder as IEnumNetEID;
}
else
{
m_resultJunctions = resultJuncs;
}
if (resultEdges == null)
{
// edges were not returned -- create an empty enumeration
IEnumNetEIDBuilder eidBuilder = new EnumNetEIDArrayClass();
eidBuilder.Network = nax.CurrentNetwork.Network;
eidBuilder.ElementType = esriElementType.esriETEdge;
m_resultEdges = eidBuilder as IEnumNetEID;
}
else
{
m_resultEdges = resultEdges;
}
// update the extension with the results
INetworkAnalysisExtResults naxResults = m_utilNetExt as INetworkAnalysisExtResults;
naxResults.ClearResults(); // first remove the old results
if (naxResults.ResultsAsSelection)
{
naxResults.CreateSelection(resultJuncs, resultEdges);
}
else
{
naxResults.SetResults(resultJuncs, resultEdges);
}
}
void ITraceTask.OnTraceExecution()
{
// prepare the network solver
ITraceFlowSolverGEN tfs = UTIL_coreTraceSetup();
if (tfs == null)
return;
// perform the trace task
IEnumNetEID resultJuncs, resultEdges;
ITraceTasks traceTasks = m_utilNetExt as ITraceTasks;
esriFlowElements flowElements = traceTasks.TraceFlowElements;
if (traceTasks.TraceEnds)
// find the features stopping the trace
tfs.FindFlowEndElements(esriFlowMethod.esriFMUpstream, flowElements, out resultJuncs, out resultEdges);
else
// return the traced features
tfs.FindFlowElements(esriFlowMethod.esriFMUpstream, flowElements, out resultJuncs, out resultEdges);
// copy the results to the class level
INetworkAnalysisExt nax = m_utilNetExt as INetworkAnalysisExt;
if (resultJuncs == null)
{
// junctions were not returned -- create an empty enumeration
IEnumNetEIDBuilder eidBuilder = new EnumNetEIDArrayClass();
eidBuilder.Network = nax.CurrentNetwork.Network;
eidBuilder.ElementType = esriElementType.esriETJunction;
m_resultJunctions = eidBuilder as IEnumNetEID;
}
else
{
m_resultJunctions = resultJuncs;
}
if (resultEdges == null)
{
// edges were not returned -- create an empty enumeration
IEnumNetEIDBuilder eidBuilder = new EnumNetEIDArrayClass();
eidBuilder.Network = nax.CurrentNetwork.Network;
eidBuilder.ElementType = esriElementType.esriETEdge;
m_resultEdges = eidBuilder as IEnumNetEID;
}
else
{
m_resultEdges = resultEdges;
}
// update the extension with the results
INetworkAnalysisExtResults naxResults = m_utilNetExt as INetworkAnalysisExtResults;
naxResults.ClearResults(); // first remove the old results
if (naxResults.ResultsAsSelection)
naxResults.CreateSelection(resultJuncs, resultEdges);
else
{
naxResults.SetResults(resultJuncs, resultEdges);
}
}
private IEnumNetEID GetEnumNetEID(int eidToStartFrom, Dictionary<int, int> pathDictionary, INetwork network, IGeometricNetwork geomNet, esriElementType elemType)
{
IEnumNetEIDBuilder enumEIDBuilder = new EnumNetEIDArrayClass();
enumEIDBuilder.Network = network;
enumEIDBuilder.ElementType = elemType;
if (eidToStartFrom == -1)//Add all elements to the return dictionary
{
foreach (KeyValuePair<int, int> kvp in pathDictionary)
{
int eid = kvp.Key;
//Only add to the builder if the element type (junction or edge) is of the type we are looking for
if (((eid < 0) && elemType == esriElementType.esriETEdge) || ((eid > 0) && elemType == esriElementType.esriETJunction))
{
enumEIDBuilder.Add(Math.Abs( eid));
}
}
}
else
{
int eid = eidToStartFrom;
while (eid != -99999999) // -99999999 means that there is no parent
{
if (((eid < 0) && elemType == esriElementType.esriETEdge) || ((eid > 0) && elemType == esriElementType.esriETJunction))
{
enumEIDBuilder.Add(Math.Abs( eid));
}
//Get the junction or edge that feeds this junction or edge
eid = pathDictionary[eid];
}
}
return enumEIDBuilder as IEnumNetEID;
}
public int [] FindPath(IEdgeFlag [] edgeFlags, out double length)
{
int [] roadIDs = {};
int [] roadIDList = {};
length = -1;
try
{
ITraceFlowSolverGEN traceSolver = new TraceFlowSolverClass();
INetSolver solver = traceSolver as INetSolver;
solver.SourceNetwork = roadNet;
traceSolver.PutEdgeOrigins(ref edgeFlags);
INetSchema schema = roadNet as INetSchema;
INetSolverWeights netWeights = traceSolver as INetSolverWeights;
INetWeight weight = schema.get_WeightByName("RoadTypeWeight");
netWeights.FromToEdgeWeight = weight;
netWeights.ToFromEdgeWeight = weight;
IEnumNetEID roadJunctions = new EnumNetEIDArrayClass();
IEnumNetEID roadEdges = new EnumNetEIDArrayClass();
object [] segmentCosts = new object [edgeFlags.Length];
traceSolver.FindPath(esriFlowMethod.esriFMConnected,
esriShortestPathObjFn.esriSPObjFnMinSum,
out roadJunctions, out roadEdges, edgeFlags.Length-1, ref segmentCosts);
// arrays for storing the featureclass id, object id, and subclass id
roadIDs = new int[roadEdges.Count];
int [] FCIDList = new int[roadEdges.Count];
int [] SCIDList = new int[roadEdges.Count];
//index of feature fields of interest
int lengthField = RoadEdge.FindField("SHAPE_Length");
//int roadIDField = RoadEdge.FindField("roadid");
//collect feature ids, roadids, and length by iterating through uid enumeration
length = 0;
roadIDList = new int[roadEdges.Count];
for(int i=0; i < roadEdges.Count; i++)
{
RoadNetElements.QueryIDs(roadEdges.Next(),ESRI.ArcGIS.Geodatabase.esriElementType.esriETEdge,out FCIDList[i], out roadIDs[i],out SCIDList[i]);
roadIDList[i] = RoadEdge.GetFeature(roadIDs[i]).OID;//get_Value(roadIDField).ToString());
length += double.Parse(RoadEdge.GetFeature(roadIDs[i]).get_Value(lengthField).ToString());
}
}
catch(Exception err)
{
throw err;
}
return roadIDList;//roadIDs;
}
public IEnumNetEID ConvertTracedElementsCollectionToEnumNetEid(IMMTracedElements tracedElements, INetwork network)
{
IEnumNetEID resultEnum = null;
try
{
// we have a feedpath, now we want to extract all the elements of one type and
// put them in an esri enumneteid so we can display it on the map or other fun stuff
IEnumNetEIDBuilder enumNetEIDBuilder = new EnumNetEIDArrayClass();
enumNetEIDBuilder.Network = network;
enumNetEIDBuilder.ElementType = (esriElementType)tracedElements.ElementType;
INetElements netElements = network as INetElements;
if ((netElements != null) && (esriElementType.esriETEdge == (esriElementType)tracedElements.ElementType))
{
tracedElements.Reset();
IMMTracedElement tracedElement = tracedElements.Next();
while (tracedElement != null)
{
IEnumNetEID tempEnumNetEID = netElements.GetEIDs(tracedElement.FCID, tracedElement.OID, esriElementType.esriETEdge);
tempEnumNetEID.Reset();
for (int eid = tempEnumNetEID.Next(); eid > 0; eid = tempEnumNetEID.Next())
{
enumNetEIDBuilder.Add(eid);
}
tracedElement = tracedElements.Next();
}
}
else
{
tracedElements.Reset();
IMMTracedElement tracedElement = tracedElements.Next();
while (tracedElement != null)
{
enumNetEIDBuilder.Add(tracedElement.EID);
tracedElement = tracedElements.Next();
}
}
if (enumNetEIDBuilder == null)
{
this.Logger.WriteLine("Builder is null");
}
resultEnum = enumNetEIDBuilder as IEnumNetEID;
}
catch (Exception EX)
{
this.Logger.WriteLine(" ConvertTracedElements:" + EX.Message + " " + EX.StackTrace);
}
return resultEnum;
}