private void CreateAndPopulateTurnFeatureClass(string outputFileGdbPath, string fdsName,
string ProhibRdmsTableName, string tempStatsTableName,
IGPMessages messages, ITrackCancel trackcancel)
{
// Determine the number of AltID fields we need (one more than the MAX_SEQ_NUMBER value).
Type factoryType = Type.GetTypeFromProgID("esriDataSourcesGDB.FileGDBWorkspaceFactory");
var wsf = Activator.CreateInstance(factoryType) as IWorkspaceFactory;
var fws = wsf.OpenFromFile(outputFileGdbPath, 0) as IFeatureWorkspace;
ITable tempStatsTable = fws.OpenTable(tempStatsTableName);
short numAltIDFields = 2;
if (tempStatsTable.RowCount(null) == 1)
numAltIDFields = (short)(1 + (double)(tempStatsTable.GetRow(1).get_Value(tempStatsTable.FindField("MAX_SEQ_NUMBER"))));
// Open the Rdms table and find the fields we need
ITable rdmsTable = fws.OpenTable(ProhibRdmsTableName);
int seqNumberField = rdmsTable.FindField("SEQ_NUMBER");
int linkIDFieldOnRdms = rdmsTable.FindField("LINK_ID");
int manLinkIDField = rdmsTable.FindField("MAN_LINKID");
int condIDFieldOnRdms = rdmsTable.FindField("COND_ID");
int endOfLkFieldOnRdms = rdmsTable.FindField("END_OF_LK");
// Create a temporary template feature class
var fcd = new FeatureClassDescriptionClass() as IFeatureClassDescription;
var ocd = fcd as IObjectClassDescription;
var fieldsEdit = ocd.RequiredFields as IFieldsEdit;
IField fieldOnRdmsTable = rdmsTable.Fields.get_Field(linkIDFieldOnRdms); // use the LINK_ID field as a template for the AltID fields
for (short i = 1; i <= numAltIDFields; i++)
{
IFieldEdit newField = new FieldClass();
newField.Name_2 = "AltID" + i;
newField.Precision_2 = fieldOnRdmsTable.Precision;
newField.Scale_2 = fieldOnRdmsTable.Scale;
newField.Type_2 = fieldOnRdmsTable.Type;
fieldsEdit.AddField(newField as IField);
}
fieldOnRdmsTable = rdmsTable.Fields.get_Field(condIDFieldOnRdms);
fieldsEdit.AddField(fieldOnRdmsTable);
var fieldChk = new FieldCheckerClass() as IFieldChecker;
IEnumFieldError enumFieldErr = null;
IFields validatedFields = null;
fieldChk.ValidateWorkspace = fws as IWorkspace;
fieldChk.Validate(fieldsEdit as IFields, out enumFieldErr, out validatedFields);
var tempFC = fws.CreateFeatureClass("TheTemplate", validatedFields, ocd.InstanceCLSID, ocd.ClassExtensionCLSID,
esriFeatureType.esriFTSimple, fcd.ShapeFieldName, "") as IDataset;
// Create the turn feature class from the template, then delete the template
Geoprocessor gp = new Geoprocessor();
CreateTurnFeatureClass createTurnFCTool = new CreateTurnFeatureClass();
string pathToFds = outputFileGdbPath + "\\" + fdsName;
createTurnFCTool.out_location = pathToFds;
createTurnFCTool.out_feature_class_name = TurnFCName;
createTurnFCTool.maximum_edges = numAltIDFields;
createTurnFCTool.in_template_feature_class = outputFileGdbPath + "\\TheTemplate";
gp.Execute(createTurnFCTool, trackcancel);
tempFC.Delete();
// Open the new turn feature class and find all the fields on it
IFeatureClass turnFC = fws.OpenFeatureClass(TurnFCName);
int[] altIDFields = new int[numAltIDFields];
int[] edgeFCIDFields = new int[numAltIDFields];
int[] edgeFIDFields = new int[numAltIDFields];
int[] edgePosFields = new int[numAltIDFields];
for (short i = 0; i < numAltIDFields; i++)
{
altIDFields[i] = turnFC.FindField("AltID" + (i + 1));
edgeFCIDFields[i] = turnFC.FindField("Edge" + (i + 1) + "FCID");
edgeFIDFields[i] = turnFC.FindField("Edge" + (i + 1) + "FID");
edgePosFields[i] = turnFC.FindField("Edge" + (i + 1) + "Pos");
}
int edge1endField = turnFC.FindField("Edge1End");
int condIDFieldOnTurnFC = turnFC.FindField("COND_ID");
// Look up the FCID of the Streets feature class
IFeatureClass streetsFC = fws.OpenFeatureClass(StreetsFCName);
int streetsFCID = streetsFC.FeatureClassID;
// Set up queries
var ts = new TableSortClass() as ITableSort;
ts.Fields = "COND_ID, SEQ_NUMBER";
ts.set_Ascending("COND_ID", true);
ts.set_Ascending("SEQ_NUMBER", true);
ts.QueryFilter = new QueryFilterClass();
ts.Table = rdmsTable;
ts.Sort(null);
ICursor rdmsCursor = ts.Rows;
IFeatureCursor turnFCCursor = turnFC.Insert(true);
IFeatureBuffer turnBuffer = turnFC.CreateFeatureBuffer();
// Write the field values to the turn feature class accordingly
int numFeatures = 0;
IRow rdmsRow = rdmsCursor.NextRow();
while (rdmsRow != null)
{
// Transfer the non-edge identifying field values to the buffer
turnBuffer.set_Value(condIDFieldOnTurnFC, rdmsRow.get_Value(condIDFieldOnRdms));
// Write the Edge1End field value to the buffer
switch ((string)(rdmsRow.get_Value(endOfLkFieldOnRdms)))
{
case "N":
turnBuffer.set_Value(edge1endField, "Y");
break;
case "R":
turnBuffer.set_Value(edge1endField, "N");
break;
default:
break; // not expected
}
// Write the AltID values to the buffer
turnBuffer.set_Value(altIDFields[0], rdmsRow.get_Value(linkIDFieldOnRdms));
short seq = (short)(rdmsRow.get_Value(seqNumberField));
short lastEntry;
do
{
lastEntry = seq;
turnBuffer.set_Value(altIDFields[lastEntry], rdmsRow.get_Value(manLinkIDField));
rdmsRow = rdmsCursor.NextRow();
if (rdmsRow == null) break;
seq = (short)(rdmsRow.get_Value(seqNumberField));
} while (seq != 1);
// Zero-out the unused fields
for (int i = lastEntry + 1; i < numAltIDFields; i++)
turnBuffer.set_Value(altIDFields[i], 0);
// Write the FCID and Pos field values to the buffer
for (short i = 0; i < numAltIDFields; i++)
{
int altID = (int)(turnBuffer.get_Value(altIDFields[i]));
if (altID != 0)
{
turnBuffer.set_Value(edgeFCIDFields[i], streetsFCID);
turnBuffer.set_Value(edgeFIDFields[i], 1);
turnBuffer.set_Value(edgePosFields[i], 0.5);
}
else
{
turnBuffer.set_Value(edgeFCIDFields[i], 0);
turnBuffer.set_Value(edgeFIDFields[i], 0);
turnBuffer.set_Value(edgePosFields[i], 0);
}
}
// Create the turn feature
turnFCCursor.InsertFeature(turnBuffer);
numFeatures++;
if ((numFeatures % 100) == 0)
{
// check for user cancel
if (trackcancel != null && !trackcancel.Continue())
throw (new COMException("Function cancelled."));
}
}
// Flush any outstanding writes to the turn feature class
turnFCCursor.Flush();
messages.AddMessage("Updating the EdgeFID values...");
// Create a temporary network dataset for updating the EdgeFID values
IDENetworkDataset dends = new DENetworkDatasetClass();
dends.SupportsTurns = true;
dends.Buildable = true;
(dends as IDataElement).Name = StreetsFCName;
(dends as IDEGeoDataset).SpatialReference = (streetsFC as IGeoDataset).SpatialReference;
IArray sourceArray = new ArrayClass();
var efs = new EdgeFeatureSourceClass() as IEdgeFeatureSource;
(efs as INetworkSource).Name = StreetsFCName;
efs.UsesSubtypes = false;
efs.ClassConnectivityGroup = 1;
efs.ClassConnectivityPolicy = esriNetworkEdgeConnectivityPolicy.esriNECPEndVertex;
sourceArray.Add(efs);
var tfs = new TurnFeatureSourceClass() as INetworkSource;
tfs.Name = TurnFCName;
sourceArray.Add(tfs);
dends.Sources = sourceArray;
var fdxc = fws.OpenFeatureDataset(fdsName) as IFeatureDatasetExtensionContainer;
var dsCont = fdxc.FindExtension(esriDatasetType.esriDTNetworkDataset) as IDatasetContainer2;
var tempNDS = dsCont.CreateDataset(dends as IDEDataset) as IDataset;
// Set the EdgeFID field values by running UpdateByAlternateIDFields
UpdateByAlternateIDFields updateByAltIDTool = new UpdateByAlternateIDFields();
updateByAltIDTool.in_network_dataset = pathToFds + "\\" + StreetsFCName;
updateByAltIDTool.alternate_ID_field_name = "LINK_ID";
gp.Execute(updateByAltIDTool, trackcancel);
// Delete the temporary network dataset
tempNDS.Delete();
// Write the turn geometries
TurnGeometryUtilities.WriteTurnGeometry(outputFileGdbPath, StreetsFCName, TurnFCName,
numAltIDFields, 0.3, messages, trackcancel);
// Index the turn geometries
messages.AddMessage("Creating spatial index on the turn feature class...");
AddSpatialIndex addSpatialIndexTool = new AddSpatialIndex();
addSpatialIndexTool.in_features = pathToFds + "\\" + TurnFCName;
gp.Execute(addSpatialIndexTool, trackcancel);
return;
}
private void CreateAndPopulateTurnFeatureClass(string outputFileGdbPath, string fdsName,
string ProhibMPTableName, string tempStatsTableName,
IGPMessages messages, ITrackCancel trackcancel)
{
// Determine the number of AltID fields we need (the same as the MAX_SEQNR value).
Type factoryType = Type.GetTypeFromProgID("esriDataSourcesGDB.FileGDBWorkspaceFactory");
var wsf = Activator.CreateInstance(factoryType) as IWorkspaceFactory;
var fws = wsf.OpenFromFile(outputFileGdbPath, 0) as IFeatureWorkspace;
ITable tempStatsTable = fws.OpenTable(tempStatsTableName);
short numAltIDFields = 2;
if (tempStatsTable.RowCount(null) == 1)
numAltIDFields = (short)((double)(tempStatsTable.GetRow(1).get_Value(tempStatsTable.FindField("MAX_SEQNR"))));
// Open the MP table and find the fields we need
ITable mpTable = fws.OpenTable(ProhibMPTableName);
int seqNrField = mpTable.FindField("SEQNR");
int trpElIDField = mpTable.FindField("TRPELID");
int idFieldOnMP = mpTable.FindField("ID");
int mpJnctIDField = mpTable.FindField("JNCTID");
// Create a temporary template feature class
var fcd = new FeatureClassDescriptionClass() as IFeatureClassDescription;
var ocd = fcd as IObjectClassDescription;
var fieldsEdit = ocd.RequiredFields as IFieldsEdit;
IField fieldOnMPTable = mpTable.Fields.get_Field(idFieldOnMP); // use the ID field as a template for the AltID fields
for (short i = 1; i <= numAltIDFields; i++)
{
IFieldEdit newField = new FieldClass();
newField.Name_2 = "AltID" + i;
newField.Precision_2 = fieldOnMPTable.Precision;
newField.Scale_2 = fieldOnMPTable.Scale;
newField.Type_2 = fieldOnMPTable.Type;
fieldsEdit.AddField(newField as IField);
}
fieldsEdit.AddField(fieldOnMPTable);
fieldOnMPTable = mpTable.Fields.get_Field(mpJnctIDField);
fieldsEdit.AddField(fieldOnMPTable);
var fieldChk = new FieldCheckerClass() as IFieldChecker;
IEnumFieldError enumFieldErr = null;
IFields validatedFields = null;
fieldChk.ValidateWorkspace = fws as IWorkspace;
fieldChk.Validate(fieldsEdit as IFields, out enumFieldErr, out validatedFields);
var tempFC = fws.CreateFeatureClass("TheTemplate", validatedFields, ocd.InstanceCLSID, ocd.ClassExtensionCLSID,
esriFeatureType.esriFTSimple, fcd.ShapeFieldName, "") as IDataset;
// Create the turn feature class from the template, then delete the template
Geoprocessor gp = new Geoprocessor();
CreateTurnFeatureClass createTurnFCTool = new CreateTurnFeatureClass();
string pathToFds = outputFileGdbPath + "\\" + fdsName;
createTurnFCTool.out_location = pathToFds;
createTurnFCTool.out_feature_class_name = TurnFCName;
createTurnFCTool.maximum_edges = numAltIDFields;
createTurnFCTool.in_template_feature_class = outputFileGdbPath + "\\TheTemplate";
gp.Execute(createTurnFCTool, trackcancel);
tempFC.Delete();
// Open the new turn feature class and find all the fields on it
IFeatureClass turnFC = fws.OpenFeatureClass(TurnFCName);
int[] altIDFields = new int[numAltIDFields];
int[] edgeFCIDFields = new int[numAltIDFields];
int[] edgeFIDFields = new int[numAltIDFields];
int[] edgePosFields = new int[numAltIDFields];
for (short i = 0; i < numAltIDFields; i++)
{
altIDFields[i] = turnFC.FindField("AltID" + (i + 1));
edgeFCIDFields[i] = turnFC.FindField("Edge" + (i + 1) + "FCID");
edgeFIDFields[i] = turnFC.FindField("Edge" + (i + 1) + "FID");
edgePosFields[i] = turnFC.FindField("Edge" + (i + 1) + "Pos");
}
int edge1endField = turnFC.FindField("Edge1End");
int idFieldOnTurnFC = turnFC.FindField("ID");
int turnFCJnctIDField = turnFC.FindField("JNCTID");
// Look up the FCID of the Streets feature class
IFeatureClass streetsFC = fws.OpenFeatureClass(StreetsFCName);
int streetsFCID = streetsFC.FeatureClassID;
// Set up queries
var ts = new TableSortClass() as ITableSort;
ts.Fields = "ID, SEQNR";
ts.set_Ascending("ID", true);
ts.set_Ascending("SEQNR", true);
ts.QueryFilter = new QueryFilterClass();
ts.Table = mpTable;
ts.Sort(null);
ICursor mpCursor = ts.Rows;
IFeatureCursor turnFCCursor = turnFC.Insert(true);
IFeatureBuffer turnBuffer = turnFC.CreateFeatureBuffer();
// Write the field values to the turn feature class accordingly
turnBuffer.set_Value(edge1endField, "?"); // dummy value; will be updated in a later calculation
int numFeatures = 0;
IRow mpRow = mpCursor.NextRow();
while (mpRow != null)
{
// Transfer the non-edge identifying field values to the buffer
turnBuffer.set_Value(idFieldOnTurnFC, mpRow.get_Value(idFieldOnMP));
turnBuffer.set_Value(turnFCJnctIDField, mpRow.get_Value(mpJnctIDField));
// Write the AltID values to the buffer
int seq = (int)(mpRow.get_Value(seqNrField));
int lastEntry;
do
{
lastEntry = seq;
turnBuffer.set_Value(altIDFields[lastEntry - 1], mpRow.get_Value(trpElIDField));
mpRow = mpCursor.NextRow();
if (mpRow == null) break;
seq = (int)(mpRow.get_Value(seqNrField));
} while (seq != 1);
// Zero-out the unused fields
for (int i = lastEntry; i < numAltIDFields; i++)
turnBuffer.set_Value(altIDFields[i], 0);
// Write the FCID and Pos field values to the buffer
for (short i = 0; i < numAltIDFields; i++)
{
double altID = (double)(turnBuffer.get_Value(altIDFields[i]));
if (altID != 0)
{
turnBuffer.set_Value(edgeFCIDFields[i], streetsFCID);
turnBuffer.set_Value(edgeFIDFields[i], 1);
turnBuffer.set_Value(edgePosFields[i], 0.5);
}
else
{
turnBuffer.set_Value(edgeFCIDFields[i], 0);
turnBuffer.set_Value(edgeFIDFields[i], 0);
turnBuffer.set_Value(edgePosFields[i], 0);
}
}
// Create the turn feature
turnFCCursor.InsertFeature(turnBuffer);
numFeatures++;
if ((numFeatures % 100) == 0)
{
// check for user cancel
if (trackcancel != null && !trackcancel.Continue())
throw (new COMException("Function cancelled."));
}
}
// Flush any outstanding writes to the turn feature class
turnFCCursor.Flush();
// Update the Edge1End values
AddMessage("Updating the Edge1End values...", messages, trackcancel);
MakeFeatureLayer makeFeatureLayerTool = new MakeFeatureLayer();
makeFeatureLayerTool.in_features = pathToFds + "\\" + TurnFCName;
makeFeatureLayerTool.out_layer = "Turn_Layer";
gp.Execute(makeFeatureLayerTool, trackcancel);
AddJoin addJoinTool = new AddJoin();
addJoinTool.in_layer_or_view = "Turn_Layer";
addJoinTool.in_field = "AltID1";
addJoinTool.join_table = pathToFds + "\\" + StreetsFCName;
addJoinTool.join_field = "ID";
gp.Execute(addJoinTool, trackcancel);
CalculateField calcFieldTool = new CalculateField();
calcFieldTool.in_table = "Turn_Layer";
calcFieldTool.field = TurnFCName + ".Edge1End";
calcFieldTool.expression = "x";
calcFieldTool.code_block = "Select Case [" + TurnFCName + ".JNCTID]\n Case [" + StreetsFCName + ".F_JNCTID]: x = \"N\"\n Case [" + StreetsFCName + ".T_JNCTID]: x = \"Y\"\n Case Else: x = \"?\"\nEnd Select";
calcFieldTool.expression_type = "VB";
gp.Execute(calcFieldTool, trackcancel);
RemoveJoin removeJoinTool = new RemoveJoin();
removeJoinTool.in_layer_or_view = "Turn_Layer";
removeJoinTool.join_name = StreetsFCName;
gp.Execute(removeJoinTool, trackcancel);
Delete deleteTool = new Delete();
deleteTool.in_data = "Turn_Layer";
gp.Execute(deleteTool, trackcancel);
AddMessage("Updating the EdgeFID values...", messages, trackcancel);
// Create a temporary network dataset for updating the EdgeFID values
IDENetworkDataset dends = new DENetworkDatasetClass();
dends.SupportsTurns = true;
dends.Buildable = true;
(dends as IDataElement).Name = StreetsFCName;
(dends as IDEGeoDataset).SpatialReference = (streetsFC as IGeoDataset).SpatialReference;
IArray sourceArray = new ArrayClass();
var efs = new EdgeFeatureSourceClass() as IEdgeFeatureSource;
(efs as INetworkSource).Name = StreetsFCName;
efs.UsesSubtypes = false;
efs.ClassConnectivityGroup = 1;
efs.ClassConnectivityPolicy = esriNetworkEdgeConnectivityPolicy.esriNECPEndVertex;
sourceArray.Add(efs);
var tfs = new TurnFeatureSourceClass() as INetworkSource;
tfs.Name = TurnFCName;
sourceArray.Add(tfs);
dends.Sources = sourceArray;
var fdxc = fws.OpenFeatureDataset(fdsName) as IFeatureDatasetExtensionContainer;
var dsCont = fdxc.FindExtension(esriDatasetType.esriDTNetworkDataset) as IDatasetContainer2;
var tempNDS = dsCont.CreateDataset(dends as IDEDataset) as IDataset;
// Set the EdgeFID field values by running UpdateByAlternateIDFields
UpdateByAlternateIDFields updateByAltIDTool = new UpdateByAlternateIDFields();
updateByAltIDTool.in_network_dataset = pathToFds + "\\" + StreetsFCName;
updateByAltIDTool.alternate_ID_field_name = "ID";
gp.Execute(updateByAltIDTool, trackcancel);
// Delete the temporary network dataset
tempNDS.Delete();
// Write the turn geometries
TurnGeometryUtilities.WriteTurnGeometry(outputFileGdbPath, StreetsFCName, TurnFCName,
numAltIDFields, 0.3, messages, trackcancel);
// Index the turn geometries
AddMessage("Creating spatial index on the turn feature class...", messages, trackcancel);
AddSpatialIndex addSpatialIndexTool = new AddSpatialIndex();
addSpatialIndexTool.in_features = pathToFds + "\\" + TurnFCName;
gp.Execute(addSpatialIndexTool, trackcancel);
return;
}