Problem with IGES (TransferRoots)

Hi,

try this:

IGESControl_Reader Reader;

Standard_Integer status = Reader.ReadFile(aFileName);

if (status != IFSelect_RetDone) return status;
Reader.TransferRoots();
TopoDS_Shape aShape = Reader.OneShape();
aHSequenceOfShape->Append(aShape);

return status;
}

The difference is using "IGESControl_Reader" instead of "IGESToBRep_Reader"

HTH,

Patrik

Hi,
the root entity you have in your iges files is a IGESSolid_ManifoldSolid and one of the surface in the solid can't be transfered, and the solid can't be build. So you might try to transfer all of the faces instead with something like this:

// read file in memory
IGESControl_Controller::Init();
IGESControl_Reader aReader;
IFSelect_ReturnStatus stat=aReader.ReadFile((char*)filename);

// get iges faces
// usually, you might use
// Handle(TColStd_HSequenceOfTransient) aListInit=aReader.GiveList("xst-transferrable-roots");
Handle(TColStd_HSequenceOfTransient) aList=aReader.GiveList("iges-faces");

// transfert all the iges entity
TopTools_SequenceOfShape listOfShapes;
for (j=1; j<=aList->Length(); j++) {
// downcast to an iges entity
Handle(IGESData_IGESEntity) igesEntity= Handle(IGESData_IGESEntity)::DownCast(aList->Value(j));
if (!igesEntity.IsNull()) {
// clear any old shape
aReader.Clear();
try {
isTransfered=aReader.TransferEntity(igesEntity);
// transfert is ok
if (aReader.IsDone()) {

// get the shape
TopoDS_Shape aShape=aReader.OneShape();
listOfShapes.Append(aShape);
}
}
catch (Standard_Failure) {
}
catch (...) {
}
}
}

Good Luck,
Francois.