STEPIMPORT_EXPORT
TopoDS_Shape ImportSTEP (const TCollection_AsciiString& theFileName,
const TCollection_AsciiString& /*theFormatName*/,
TCollection_AsciiString& theError,
const TDF_Label& theShapeLabel)
{
MESSAGE("Import STEP model from file " << theFileName.ToCString());
// Set "C" numeric locale to save numbers correctly
//Kernel_Utils::Localizer loc;
TopoDS_Shape aResShape;
//VRV: OCC 4.0 migration
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);
//VRV: OCC 4.0 migration
TopoDS_Compound compound;
BRep_Builder B;
B.MakeCompound(compound);
try {
#if OCC_VERSION_LARGE > 0x06010000
OCC_CATCH_SIGNALS;
#endif
IFSelect_ReturnStatus status = aReader.ReadFile(theFileName.ToCString());
if (status == IFSelect_RetDone) {
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;
// BEGIN: Store names 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();
Handle(Standard_Type) tPD = STANDARD_TYPE(StepBasic_ProductDefinition);
Handle(Standard_Type) tShape = STANDARD_TYPE(StepShape_TopologicalRepresentationItem);
Handle(Standard_Type) tGeom = STANDARD_TYPE(StepGeom_GeometricRepresentationItem);
Standard_Integer nb = Model->NbEntities();
for (Standard_Integer ie = 1; ie <= nb; ie++) {
Handle(Standard_Transient) enti = Model->Value(ie);
Handle(TCollection_HAsciiString) aName;
if ( enti->IsKind( tShape ) || enti->IsKind(tGeom))
{
aName = Handle(StepRepr_RepresentationItem)::DownCast(enti)->Name();
}
else if (enti->DynamicType() == tPD)
{
Handle(StepBasic_ProductDefinition) PD =
Handle(StepBasic_ProductDefinition)::DownCast(enti);
if (PD.IsNull()) continue;
Handle(StepBasic_Product) Prod = PD->Formation()->OfProduct();
aName = Prod->Name();
}
else
{
continue;
}
if ( aName->UsefullLength() < 1 )
continue;
// skip 'N0NE' name
if ( aName->UsefullLength() == 4 &&
toupper (aName->Value(1)) == 'N' &&
toupper (aName->Value(2)) == 'O' &&
toupper (aName->Value(3)) == 'N' &&
toupper (aName->Value(4)) == 'E')
continue;
// 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))
continue;
}
TCollection_ExtendedString aNameExt (aName->ToCString());
// find target shape
Handle(Transfer_Binder) binder = TP->Find(enti);
if (binder.IsNull()) continue;
TopoDS_Shape S = TransferBRep::ShapeResult(binder);
if (S.IsNull()) continue;
// as PRODUCT can be included in the main shape
// several times, we look here for all iclusions.
Standard_Integer isub, nbSubs = anIndices.Extent();
for (isub = 1; isub <= nbSubs; isub++)
{
TopoDS_Shape aSub = anIndices.FindKey(isub);
if (aSub.IsPartner(S)) {
TDF_Label L;
if (enti->IsKind(tGeom)) {
// 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 Lab = nameAttr->Label();
Handle(TNaming_NamedShape) shAttr;
if (Lab.FindAttribute(TNaming_NamedShape::GetID(), shAttr) && shAttr->Get().IsEqual(aSub))
L = Lab;
}
}
// create label and set shape
if (L.IsNull())
{
TDF_TagSource aTag;
L = aTag.NewChild(theShapeLabel);
TNaming_Builder tnBuild (L);
//tnBuild.Generated(S);
tnBuild.Generated(aSub);
}
// set a name
TDataStd_Name::Set(L, aNameExt);
}
}
}
}
// END: Store names
}
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;
}
