public void Refresh()
{
// This method is called internally during a solve operation immediately prior to performing the actual solve
// This gives us an opportunity to update our evaluator's internal state based on parameter values
m_scaleFactor = 1;
m_countSourceEIDs = 0;
m_sourceEIDHashTable = new Dictionary <int, int>();
INetworkAttribute2 netAttribute2 = m_networkAttribute as INetworkAttribute2;
IArray netAttributeParams = netAttribute2.Parameters;
// Parameters: "ScaleSubset_Factor", "ScaleSubset_eids_<SourceName>"
string prefix = BaseParameterName + "_";
string paramScaleFactorName = prefix + "Factor";
string paramEIDsName = prefix + "eids_" + m_networkSource.Name;
int nParamScaleFactor = SubsetHelper.FindParameter(netAttributeParams, paramScaleFactorName);
int nParamEIDs = SubsetHelper.FindParameter(netAttributeParams, paramEIDsName);
object value;
INetworkAttributeParameter paramScaleFactor;
INetworkAttributeParameter paramEIDs;
if (nParamScaleFactor >= 0)
{
paramScaleFactor = netAttributeParams.get_Element(nParamScaleFactor) as INetworkAttributeParameter;
value = paramScaleFactor.Value;
if (value != null)
{
m_scaleFactor = (double)value;
}
}
if (nParamEIDs >= 0)
{
paramEIDs = netAttributeParams.get_Element(nParamEIDs) as INetworkAttributeParameter;
value = paramEIDs.Value as int[];
if (value != null)
{
int eid;
int[] rgEIDs;
rgEIDs = (int[])value;
int lb = rgEIDs.GetLowerBound(0);
int ub = rgEIDs.GetUpperBound(0);
for (int i = lb; i <= ub; ++i)
{
++m_countSourceEIDs;
eid = rgEIDs[i];
m_sourceEIDHashTable.Add(eid, eid);
}
}
}
}
public static IEvaluatedNetworkAttribute AddScaleSubsetAttribute(IDENetworkDataset deNet, INetworkAttribute2 baseNetAttribute)
{
if (baseNetAttribute == null)
{
return(null);
}
if (baseNetAttribute.UsageType != esriNetworkAttributeUsageType.esriNAUTCost)
{
return(null);
}
IArray netAttributes = deNet.Attributes;
IEvaluatedNetworkAttribute netAttribute = new EvaluatedNetworkAttributeClass() as IEvaluatedNetworkAttribute;
string netAttributeName = BaseParameterName;
netAttributeName += "_";
netAttributeName += baseNetAttribute.Name;
netAttribute.Name = netAttributeName;
netAttribute.UsageType = baseNetAttribute.UsageType;
netAttribute.DataType = baseNetAttribute.DataType;
netAttribute.Units = baseNetAttribute.Units;
List <INetworkSource> allNetSources = SubsetHelper.GetSourceList(deNet.Sources);
List <INetworkSource> netSources = SubsetHelper.GetSourceList(allNetSources, esriNetworkElementType.esriNETEdge);
List <string> netSourceNames = SubsetHelper.GetSourceNames(netSources);
ResetScaleSubsetParameters((INetworkAttribute2)netAttribute, netSourceNames);
bool supportTurns = deNet.SupportsTurns;
//default evaluators
SubsetHelper.SetDefaultEvaluator(netAttribute, 0, esriNetworkElementType.esriNETEdge);
SubsetHelper.SetDefaultEvaluator(netAttribute, 0, esriNetworkElementType.esriNETJunction);
if (supportTurns)
{
SubsetHelper.SetDefaultEvaluator(netAttribute, 0, esriNetworkElementType.esriNETTurn);
}
//sourced evaluators
foreach (INetworkSource netSource in netSources)
{
SubsetHelper.SetEvaluators(netAttribute, netSource, typeof(ScaleSubsetEvaluator));
}
netAttributes.Add(netAttribute);
deNet.Attributes = netAttributes;
return(netAttribute);
}
public static List <IEvaluatedNetworkAttribute> AddScaleSubsetAttributes(IDENetworkDataset deNet)
{
List <IEvaluatedNetworkAttribute> scaleSubsetAttributes = new List <IEvaluatedNetworkAttribute>();
IArray netAttributesArray = deNet.Attributes;
List <int> baseIndexes = SubsetHelper.FindAttributeIndexes(netAttributesArray, esriNetworkAttributeUsageType.esriNAUTCost, esriNetworkAttributeDataType.esriNADTDouble, true, false);
List <INetworkAttribute2> baseNetAttributes = SubsetHelper.FindAttributes(netAttributesArray, baseIndexes);
foreach (INetworkAttribute2 baseNetAttribute in baseNetAttributes)
{
scaleSubsetAttributes.Add(AddScaleSubsetAttribute(deNet, baseNetAttribute));
}
return(scaleSubsetAttributes);
}
public static IEvaluatedNetworkAttribute AddFilterSubsetAttribute(IDENetworkDataset deNet)
{
IArray netAttributes = deNet.Attributes;
IEvaluatedNetworkAttribute netAttribute = new EvaluatedNetworkAttributeClass() as IEvaluatedNetworkAttribute;
netAttribute.Name = BaseParameterName;
netAttribute.UsageType = esriNetworkAttributeUsageType.esriNAUTRestriction;
netAttribute.DataType = esriNetworkAttributeDataType.esriNADTBoolean;
netAttribute.Units = esriNetworkAttributeUnits.esriNAUUnknown;
INetworkAttribute2 netAttribute2 = netAttribute as INetworkAttribute2;
netAttribute2.UseByDefault = true;
List <INetworkSource> allNetSources = SubsetHelper.GetSourceList(deNet.Sources);
List <INetworkSource> netSources = SubsetHelper.GetSourceList(allNetSources, esriNetworkElementType.esriNETEdge);
List <string> netSourceNames = SubsetHelper.GetSourceNames(netSources);
ResetFilterSubsetParameters((INetworkAttribute2)netAttribute, netSourceNames);
bool supportTurns = deNet.SupportsTurns;
//default evaluators
SubsetHelper.SetDefaultEvaluator(netAttribute, false, esriNetworkElementType.esriNETEdge);
SubsetHelper.SetDefaultEvaluator(netAttribute, false, esriNetworkElementType.esriNETJunction);
if (supportTurns)
{
SubsetHelper.SetDefaultEvaluator(netAttribute, false, esriNetworkElementType.esriNETTurn);
}
//sourced evaluators
foreach (INetworkSource netSource in netSources)
{
SubsetHelper.SetEvaluators(netAttribute, netSource, typeof(FilterSubsetEvaluator));
}
netAttributes.Add(netAttribute);
deNet.Attributes = netAttributes;
return(netAttribute);
}
public static void RemoveFilterSubsetAttribute(IDENetworkDataset deNet)
{
IArray netAttributes = SubsetHelper.RemoveAttributesByPrefix(deNet.Attributes, "Filter");
deNet.Attributes = netAttributes;
}
public static void RemoveScaleSubsetAttributes(IDENetworkDataset deNet)
{
IArray netAttributes = SubsetHelper.RemoveAttributesByPrefix(deNet.Attributes, BaseParameterName);
deNet.Attributes = netAttributes;
}
