*/
#include <ExchangePlugin_ImportFeature.h>
+#include <ExchangePlugin_BREPImport.h>
+#include <ExchangePlugin_STEPImport.h>
#include <GeomAPI_Shape.h>
#include <Config_Common.h>
#include <ostream>
#endif
-#ifdef WIN32
-# define _separator_ '\\'
-#else
-# define _separator_ '/'
-#endif
-
-typedef TopoDS_Shape (*importFunctionPointer)(const TCollection_AsciiString&,
- const TCollection_AsciiString&,
- TCollection_AsciiString&,
- const TDF_Label&);
-
ExchangePlugin_ImportFeature::ExchangePlugin_ImportFeature()
{
}
TCollection_AsciiString aFileName (theFileName.c_str());
OSD_Path aPath(aFileName);
TCollection_AsciiString aFormatName = aPath.Extension();
- // ".brep" -> "BREP". TCollection_AsciiString are numbered from 1
+ // ".brep" -> "BREP", TCollection_AsciiString are numbered from 1
aFormatName = aFormatName.SubString(2, aFormatName.Length());
aFormatName.UpperCase();
- // Load plugin library and get the "Import" method
- LibHandle anImportLib = loadImportPlugin(std::string(aFormatName.ToCString()));
- if(!anImportLib)
- return false;
- importFunctionPointer fp = (importFunctionPointer) GetProc(anImportLib, "Import");
- // Perform the import
- TCollection_AsciiString anError;
- TDF_Label anUnknownLabel = TDF_Label();
- TopoDS_Shape aShape = fp(aFileName,
- aFormatName,
- anError,
- anUnknownLabel);
+ // Perform the import
+ TCollection_AsciiString anError;
+ TDF_Label anUnknownLabel = TDF_Label();
+
+ TopoDS_Shape aShape;
+ if (aFormatName == "BREP") {
+ aShape = BREPImport::Import(aFileName, aFormatName, anError, anUnknownLabel);
+ } else if (aFormatName == "STEP") {
+ aShape = STEPImport::Import(aFileName, aFormatName, anError, anUnknownLabel);
+ }
// Check if shape is valid
- if ( aShape.IsNull() ) {
+ if ( aShape.IsNull() ) {
const static std::string aShapeError =
"An error occurred while importing " + theFileName + ": " + anError.ToCString();
setError(aShapeError);
return false;
}
- //
- // Pass the results into the model
- std::string anObjectName = aPath.Name().ToCString();
- data()->setName(anObjectName);
- std::shared_ptr<ModelAPI_ResultBody> aResultBody = document()->createBody(data());
- std::shared_ptr<GeomAPI_Shape> aGeomShape(new GeomAPI_Shape);
- aGeomShape->setImpl(new TopoDS_Shape(aShape));
- //LoadNamingDS of the imported shape
- loadNamingDS(aGeomShape, aResultBody);
+ // Pass the results into the model
+ std::string anObjectName = aPath.Name().ToCString();
+ data()->setName(anObjectName);
+ std::shared_ptr<ModelAPI_ResultBody> aResultBody = document()->createBody(data());
+ std::shared_ptr<GeomAPI_Shape> aGeomShape(new GeomAPI_Shape);
+ aGeomShape->setImpl(new TopoDS_Shape(aShape));
+
+ //LoadNamingDS of the imported shape
+ loadNamingDS(aGeomShape, aResultBody);
- setResult(aResultBody);
+ setResult(aResultBody);
- return true;
+ return true;
}
//============================================================================
std::string aNameDV = "DiscVertexes";
theResultBody->loadDisconnectedVertexes(theGeomShape, aNameDV, aTag);
}
-
-LibHandle ExchangePlugin_ImportFeature::loadImportPlugin(const std::string& theFormatName)
-{
- std::string aLibName = library(theFormatName + ID());
- LibHandle anImportLib = LoadLib(aLibName.c_str());
- std::string anImportError = "Failed to load " + aLibName + ": ";
- if(!anImportLib) {
-#ifdef WIN32
- LPVOID lpMsgBuf;
- ::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
- FORMAT_MESSAGE_FROM_SYSTEM |
- FORMAT_MESSAGE_IGNORE_INSERTS,
- 0, ::GetLastError(), 0, (LPTSTR) &lpMsgBuf, 0, 0);
- anImportError = anImportError + std::string((char*) lpMsgBuf);
- ::LocalFree(lpMsgBuf);
-#else
- anImportError = anImportError + std::string(dlerror());
-#endif
- setError(anImportError);
- return false;
- }
- // Test loaded plugin for existence of valid "Import" function:
- importFunctionPointer fp = (importFunctionPointer) GetProc(anImportLib, "Import");
- if (!fp) {
- const static std::string aFunctionError =
- "No valid \"Import\" function was found in the " + aLibName;
- setError(aFunctionError);
- UnLoadLib(anImportLib)
- return NULL;
- }
- return anImportLib;
-}
--- /dev/null
+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
+
+#include <ExchangePlugin_STEPImport.h>
+
+#include <TDF_ChildIDIterator.hxx>
+#include <TDF_Label.hxx>
+#include <TDataStd_Name.hxx>
+#include <TDataStd_Comment.hxx>
+#include <TNaming_Builder.hxx>
+#include <TNaming_NamedShape.hxx>
+
+#include <IFSelect_ReturnStatus.hxx>
+#include <Interface_EntityIterator.hxx>
+#include <Interface_Graph.hxx>
+#include <Interface_InterfaceModel.hxx>
+#include <Interface_Static.hxx>
+#include <STEPControl_Reader.hxx>
+#include <StepBasic_Product.hxx>
+#include <StepBasic_ProductDefinition.hxx>
+#include <StepBasic_ProductDefinitionFormation.hxx>
+#include <StepGeom_GeometricRepresentationItem.hxx>
+#include <StepShape_TopologicalRepresentationItem.hxx>
+#include <StepRepr_DescriptiveRepresentationItem.hxx>
+#include <StepRepr_ProductDefinitionShape.hxx>
+#include <StepRepr_PropertyDefinitionRepresentation.hxx>
+#include <StepRepr_Representation.hxx>
+#include <TransferBRep.hxx>
+#include <Transfer_Binder.hxx>
+#include <Transfer_TransientProcess.hxx>
+#include <XSControl_TransferReader.hxx>
+#include <XSControl_WorkSession.hxx>
+
+#include <BRep_Builder.hxx>
+
+#include <TopExp.hxx>
+#include <TopExp_Explorer.hxx>
+#include <TopTools_IndexedMapOfShape.hxx>
+#include <TopoDS_Compound.hxx>
+#include <TopoDS_Iterator.hxx>
+
+#include <TColStd_SequenceOfAsciiString.hxx>
+
+#include <Standard_Failure.hxx>
+#include <Standard_ErrorHandler.hxx> // CAREFUL ! position of this file is critic : see Lucien PIGNOLONI / OCC
+
+namespace STEPImport {
+//=============================================================================
+/*!
+ * GetShape()
+ */
+//=============================================================================
+
+static TopoDS_Shape GetShape(const Handle(Standard_Transient) &theEnti,
+ const Handle(Transfer_TransientProcess) &theTP)
+{
+ TopoDS_Shape aResult;
+ Handle(Transfer_Binder) aBinder = theTP->Find(theEnti);
+
+ if (aBinder.IsNull()) {
+ return aResult;
+ }
+
+ aResult = TransferBRep::ShapeResult(aBinder);
+
+ return aResult;
+}
+
+//=============================================================================
+/*!
+ * GetLabel()
+ */
+//=============================================================================
+
+static TDF_Label GetLabel(const Handle(Standard_Transient) &theEnti,
+ const TDF_Label &theShapeLabel,
+ const TopoDS_Shape &aShape)
+{
+ TDF_Label aResult;
+
+ if (theEnti->IsKind
+ (STANDARD_TYPE(StepGeom_GeometricRepresentationItem))) {
+ // check all named shapes using iterator
+ TDF_ChildIDIterator anIt
+ (theShapeLabel, TDataStd_Name::GetID(), Standard_True);
+
+ for (; anIt.More(); anIt.Next()) {
+ Handle(TDataStd_Name) nameAttr =
+ Handle(TDataStd_Name)::DownCast(anIt.Value());
+
+ if (nameAttr.IsNull()) {
+ continue;
+ }
+
+ TDF_Label aLab = nameAttr->Label();
+ Handle(TNaming_NamedShape) shAttr;
+
+ if (aLab.FindAttribute(TNaming_NamedShape::GetID(), shAttr) &&
+ shAttr->Get().IsEqual(aShape)) {
+ aResult = aLab;
+ }
+ }
+ }
+
+ // create label and set shape
+ if (aResult.IsNull()) {
+ TDF_TagSource aTag;
+
+ aResult = aTag.NewChild(theShapeLabel);
+
+ TNaming_Builder tnBuild (aResult);
+
+ tnBuild.Generated(aShape);
+ }
+
+ return aResult;
+}
+
+//=============================================================================
+/*!
+ * StoreName()
+ */
+//=============================================================================
+
+static void StoreName(const Handle(Standard_Transient) &theEnti,
+ const TopTools_IndexedMapOfShape &theIndices,
+ const Handle(Transfer_TransientProcess) &theTP,
+ const TDF_Label &theShapeLabel)
+{
+ Handle(TCollection_HAsciiString) aName;
+
+ if (theEnti->IsKind(STANDARD_TYPE(StepShape_TopologicalRepresentationItem)) ||
+ theEnti->IsKind(STANDARD_TYPE(StepGeom_GeometricRepresentationItem))) {
+ aName = Handle(StepRepr_RepresentationItem)::DownCast(theEnti)->Name();
+ } else {
+ Handle(StepBasic_ProductDefinition) PD =
+ Handle(StepBasic_ProductDefinition)::DownCast(theEnti);
+
+ if (PD.IsNull() == Standard_False) {
+ Handle(StepBasic_Product) Prod = PD->Formation()->OfProduct();
+ aName = Prod->Name();
+ }
+ }
+
+ bool isValidName = false;
+
+ if (aName.IsNull() == Standard_False) {
+ isValidName = true;
+
+ if (aName->UsefullLength() < 1) {
+ isValidName = false;
+ } else if (aName->UsefullLength() == 4 &&
+ toupper (aName->Value(1)) == 'N' &&
+ toupper (aName->Value(2)) == 'O' &&
+ toupper (aName->Value(3)) == 'N' &&
+ toupper (aName->Value(4)) == 'E') {
+ // skip 'N0NE' name
+ isValidName = false;
+ } else {
+ // special check to pass names like "Open CASCADE STEP translator 6.3 1"
+ TCollection_AsciiString aSkipName ("Open CASCADE STEP translator");
+
+ if (aName->Length() >= aSkipName.Length()) {
+ if (aName->String().SubString
+ (1, aSkipName.Length()).IsEqual(aSkipName)) {
+ isValidName = false;
+ }
+ }
+ }
+ }
+
+ if (isValidName) {
+ TCollection_ExtendedString aNameExt (aName->ToCString());
+
+ // find target shape
+ TopoDS_Shape S = GetShape(theEnti, theTP);
+
+ if (S.IsNull()) {
+ return;
+ }
+
+ // as PRODUCT can be included in the main shape
+ // several times, we look here for all iclusions.
+ Standard_Integer isub, nbSubs = theIndices.Extent();
+
+ for (isub = 1; isub <= nbSubs; isub++) {
+ TopoDS_Shape aSub = theIndices.FindKey(isub);
+
+ if (aSub.IsPartner(S)) {
+ TDF_Label L = GetLabel(theEnti, theShapeLabel, aSub);
+
+ // set a name
+ TDataStd_Name::Set(L, aNameExt);
+ }
+ }
+ }
+}
+
+//=============================================================================
+/*!
+ * StoreMaterial()
+ */
+//=============================================================================
+
+static void StoreMaterial
+ (const Handle(Standard_Transient) &theEnti,
+ const TopTools_IndexedMapOfShape &theIndices,
+ const Handle(Transfer_TransientProcess) &theTP,
+ const TDF_Label &theShapeLabel)
+{
+ // Treat Product Definition Shape only.
+ Handle(StepRepr_ProductDefinitionShape) aPDS =
+ Handle(StepRepr_ProductDefinitionShape)::DownCast(theEnti);
+ Handle(StepBasic_ProductDefinition) aProdDef;
+
+ if(aPDS.IsNull() == Standard_False) {
+ // Product Definition Shape ==> Product Definition
+ aProdDef = aPDS->Definition().ProductDefinition();
+ }
+
+ if (aProdDef.IsNull() == Standard_False) {
+ // Product Definition ==> Property Definition
+ const Interface_Graph &aGraph = theTP->Graph();
+ Interface_EntityIterator aSubs = aGraph.Sharings(aProdDef);
+ TopoDS_Shape aShape;
+
+ for(aSubs.Start(); aSubs.More(); aSubs.Next()) {
+ Handle(StepRepr_PropertyDefinition) aPropD =
+ Handle(StepRepr_PropertyDefinition)::DownCast(aSubs.Value());
+
+ if(aPropD.IsNull() == Standard_False) {
+ // Property Definition ==> Representation.
+ Interface_EntityIterator aSubs1 = aGraph.Sharings(aPropD);
+
+ for(aSubs1.Start(); aSubs1.More(); aSubs1.Next()) {
+ Handle(StepRepr_PropertyDefinitionRepresentation) aPDR =
+ Handle(StepRepr_PropertyDefinitionRepresentation)::
+ DownCast(aSubs1.Value());
+
+ if(aPDR.IsNull() == Standard_False) {
+ // Property Definition ==> Material Name.
+ Handle(StepRepr_Representation) aRepr = aPDR->UsedRepresentation();
+
+ if(aRepr.IsNull() == Standard_False) {
+ Standard_Integer ir;
+
+ for(ir = 1; ir <= aRepr->NbItems(); ir++) {
+ Handle(StepRepr_RepresentationItem) aRI = aRepr->ItemsValue(ir);
+ Handle(StepRepr_DescriptiveRepresentationItem) aDRI =
+ Handle(StepRepr_DescriptiveRepresentationItem)::DownCast(aRI);
+
+ if(aDRI.IsNull() == Standard_False) {
+ // Get shape from Product Definition
+ Handle(TCollection_HAsciiString) aMatName = aDRI->Name();
+
+ if(aMatName.IsNull() == Standard_False) {
+ TCollection_ExtendedString
+ aMatNameExt (aMatName->ToCString());
+
+ if (aShape.IsNull()) {
+ // Get the shape.
+ aShape = GetShape(aProdDef, theTP);
+
+ if (aShape.IsNull()) {
+ return;
+ }
+ }
+
+ // as PRODUCT can be included in the main shape
+ // several times, we look here for all iclusions.
+ Standard_Integer isub, nbSubs = theIndices.Extent();
+
+ for (isub = 1; isub <= nbSubs; isub++) {
+ TopoDS_Shape aSub = theIndices.FindKey(isub);
+
+ if (aSub.IsPartner(aShape)) {
+ TDF_Label aLabel =
+ GetLabel(aProdDef, theShapeLabel, aSub);
+
+ // set a name
+ TDataStd_Comment::Set(aLabel, aMatNameExt);
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+//=============================================================================
+/*!
+ * Import()
+ */
+//=============================================================================
+
+Handle(TCollection_HAsciiString) GetValue (const TCollection_AsciiString& theFileName,
+ const TCollection_AsciiString& theParameterName,
+ TCollection_AsciiString& theError)
+{
+ Handle(TCollection_HAsciiString) aValue;
+
+ if (theParameterName != "LEN_UNITS") {
+ theError = theParameterName + " parameter reading is not supported by STEP plugin";
+ return aValue;
+ }
+
+ // Set "C" numeric locale to save numbers correctly
+ // Kernel_Utils::Localizer loc;
+
+ STEPControl_Reader aReader;
+
+ Interface_Static::SetCVal("xstep.cascade.unit","M");
+ Interface_Static::SetIVal("read.step.ideas", 1);
+ Interface_Static::SetIVal("read.step.nonmanifold", 1);
+
+ try {
+#if OCC_VERSION_LARGE > 0x06010000
+ OCC_CATCH_SIGNALS;
+#endif
+ IFSelect_ReturnStatus status = aReader.ReadFile(theFileName.ToCString());
+ if (status == IFSelect_RetDone) {
+ TColStd_SequenceOfAsciiString anUnitLengthNames;
+ TColStd_SequenceOfAsciiString anUnitAngleNames;
+ TColStd_SequenceOfAsciiString anUnitSolidAngleNames;
+ aReader.FileUnits(anUnitLengthNames, anUnitAngleNames, anUnitSolidAngleNames);
+ if (anUnitLengthNames.Length() > 0) {
+ aValue = new TCollection_HAsciiString( anUnitLengthNames.First() );
+ /*
+ TCollection_AsciiString aLenUnits = anUnitLengthNames.First();
+ if (aLenUnits == "millimetre")
+ aValue = new TCollection_HAsciiString ("MM");
+ else if (aLenUnits == "centimetre")
+ aValue = new TCollection_HAsciiString ("CM");
+ else if (aLenUnits == "metre")
+ aValue = new TCollection_HAsciiString ("M");
+ else if (aLenUnits == "INCH")
+ aValue = new TCollection_HAsciiString ("INCH");
+ // TODO (for other units than mm, cm, m or inch)
+ //else if (aLenUnits == "")
+ // aValue = new TCollection_HAsciiString ("");
+
+ // tmp begin
+ //std::cout << "$$$ --- " << anUnitLengthNames.First();
+ //for (int ii = 2; ii <= anUnitLengthNames.Length(); ii++)
+ // std::cout << ", " << anUnitLengthNames.Value(ii);
+ //std::cout << std::endl;
+ // tmp end
+ */
+ }
+ }
+ else {
+ theError = theFileName + " reading failed";
+ }
+ }
+ catch (Standard_Failure) {
+ Handle(Standard_Failure) aFail = Standard_Failure::Caught();
+ theError = aFail->GetMessageString();
+ }
+
+ return aValue;
+}
+
+TopoDS_Shape Import (const TCollection_AsciiString& theFileName,
+ const TCollection_AsciiString& theFormatName,
+ TCollection_AsciiString& theError,
+ const TDF_Label& theShapeLabel)
+{
+ TopoDS_Shape aResShape;
+
+ // Set "C" numeric locale to save numbers correctly
+ // Kernel_Utils::Localizer loc;
+
+ STEPControl_Reader aReader;
+
+ //VSR: 16/09/09: Convert to METERS
+ Interface_Static::SetCVal("xstep.cascade.unit","M");
+ Interface_Static::SetIVal("read.step.ideas", 1);
+ Interface_Static::SetIVal("read.step.nonmanifold", 1);
+
+ BRep_Builder B;
+ TopoDS_Compound compound;
+ B.MakeCompound(compound);
+
+ try {
+ OCC_CATCH_SIGNALS;
+
+ IFSelect_ReturnStatus status = aReader.ReadFile(theFileName.ToCString());
+
+ if (status == IFSelect_RetDone) {
+
+ // Regard or not the model units
+ if (theFormatName == "STEP_SCALE") {
+ // set UnitFlag to units from file
+ TColStd_SequenceOfAsciiString anUnitLengthNames;
+ TColStd_SequenceOfAsciiString anUnitAngleNames;
+ TColStd_SequenceOfAsciiString anUnitSolidAngleNames;
+ aReader.FileUnits(anUnitLengthNames, anUnitAngleNames, anUnitSolidAngleNames);
+ if (anUnitLengthNames.Length() > 0) {
+ TCollection_AsciiString aLenUnits = anUnitLengthNames.First();
+ if (aLenUnits == "millimetre")
+ Interface_Static::SetCVal("xstep.cascade.unit", "MM");
+ else if (aLenUnits == "centimetre")
+ Interface_Static::SetCVal("xstep.cascade.unit", "CM");
+ else if (aLenUnits == "metre" || aLenUnits.IsEmpty())
+ Interface_Static::SetCVal("xstep.cascade.unit", "M");
+ else if (aLenUnits == "INCH")
+ Interface_Static::SetCVal("xstep.cascade.unit", "INCH");
+ else {
+ theError = "The file contains not supported units.";
+ return aResShape;
+ }
+ // TODO (for other units than mm, cm, m or inch)
+ //else if (aLenUnits == "")
+ // Interface_Static::SetCVal("xstep.cascade.unit", "???");
+ }
+ }
+ else {
+ //cout<<"need re-scale a model"<<endl;
+ // set UnitFlag to 'meter'
+ Interface_Static::SetCVal("xstep.cascade.unit","M");
+ }
+
+ Standard_Boolean failsonly = Standard_False;
+ aReader.PrintCheckLoad(failsonly, IFSelect_ItemsByEntity);
+
+ /* Root transfers */
+ Standard_Integer nbr = aReader.NbRootsForTransfer();
+ aReader.PrintCheckTransfer(failsonly, IFSelect_ItemsByEntity);
+
+ for (Standard_Integer n = 1; n <= nbr; n++) {
+ Standard_Boolean ok = aReader.TransferRoot(n);
+ /* Collecting resulting entities */
+ Standard_Integer nbs = aReader.NbShapes();
+ if (!ok || nbs == 0)
+ {
+ // THROW_SALOME_CORBA_EXCEPTION("Exception catched in GEOM_Gen_i::ImportStep", SALOME::BAD_PARAM);
+ continue; // skip empty root
+ }
+ /* For a single entity */
+ else if (nbr == 1 && nbs == 1) {
+ aResShape = aReader.Shape(1);
+ // ATTENTION: this is a workaround for mantis issue 0020442 remark 0010776
+ // It should be removed after patching OCCT for bug OCC22436
+ // (fix for OCCT is expected in service pack next to OCCT6.3sp12)
+ if (aResShape.ShapeType() == TopAbs_COMPOUND) {
+ int nbSub1 = 0;
+ TopoDS_Shape currShape;
+ TopoDS_Iterator It (aResShape, Standard_True, Standard_True);
+ for (; It.More(); It.Next()) {
+ nbSub1++;
+ currShape = It.Value();
+ }
+ if (nbSub1 == 1)
+ aResShape = currShape;
+ }
+ // END workaround
+ break;
+ }
+
+ for (Standard_Integer i = 1; i <= nbs; i++) {
+ TopoDS_Shape aShape = aReader.Shape(i);
+ if (aShape.IsNull()) {
+ // THROW_SALOME_CORBA_EXCEPTION("Null shape in GEOM_Gen_i::ImportStep", SALOME::BAD_PARAM) ;
+ //return aResShape;
+ continue;
+ }
+ else {
+ B.Add(compound, aShape);
+ }
+ }
+ }
+ if (aResShape.IsNull())
+ aResShape = compound;
+
+ // Check if any BRep entity has been read, there must be at least a vertex
+ if ( !TopExp_Explorer( aResShape, TopAbs_VERTEX ).More() )
+ {
+ theError = "No geometrical data in the imported file.";
+ return TopoDS_Shape();
+ }
+
+ // BEGIN: Store names and materials of sub-shapes from file
+ TopTools_IndexedMapOfShape anIndices;
+ TopExp::MapShapes(aResShape, anIndices);
+
+ Handle(Interface_InterfaceModel) Model = aReader.WS()->Model();
+ Handle(XSControl_TransferReader) TR = aReader.WS()->TransferReader();
+ if (!TR.IsNull()) {
+ Handle(Transfer_TransientProcess) TP = TR->TransientProcess();
+
+ Standard_Integer nb = Model->NbEntities();
+
+ for (Standard_Integer ie = 1; ie <= nb; ie++) {
+ Handle(Standard_Transient) enti = Model->Value(ie);
+
+ // Store names.
+ StoreName(enti, anIndices, TP, theShapeLabel);
+
+ // Store materials.
+ StoreMaterial(enti, anIndices, TP, theShapeLabel);
+ }
+ }
+ // END: Store names and materials
+ }
+ else {
+// switch (status) {
+// case IFSelect_RetVoid:
+// theError = "Nothing created or No data to process";
+// break;
+// case IFSelect_RetError:
+// theError = "Error in command or input data";
+// break;
+// case IFSelect_RetFail:
+// theError = "Execution was run, but has failed";
+// break;
+// case IFSelect_RetStop:
+// theError = "Execution has been stopped. Quite possible, an exception was raised";
+// break;
+// default:
+// break;
+// }
+ theError = "Wrong format of the imported file. Can't import file.";
+ aResShape.Nullify();
+ }
+ }
+ catch (Standard_Failure) {
+ Handle(Standard_Failure) aFail = Standard_Failure::Caught();
+ theError = aFail->GetMessageString();
+ aResShape.Nullify();
+ }
+ // Return previous locale
+ return aResShape;
+}
+
+} // namespace STEPImport