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0025843: Wire containing degenerated edge is not written to IGES / STEP

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add check for edges with null 2D and 3D curves for STEP,
for IGES problem exists only with wires, where non-invalid edge is only one, and it is not the last in wire(fixed).

Test case for issue CR25843
This commit is contained in:
ika
2015-03-19 15:43:17 +03:00
committed by bugmaster
parent 4dcc5ecb4f
commit 7f0b39bec9
4 changed files with 61 additions and 5 deletions
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6
src/BRepToIGES/BRepToIGES_BRWire.cxx
View File

@@ -525,8 +525,8 @@ Handle(IGESData_IGESEntity) BRepToIGES_BRWire ::TransferWire
AddWarning(mywire, "an Edge is a null entity");
}
else {
ent = TransferEdge(E, Standard_False);
if (!ent.IsNull()) Seq->Append(ent);
ent = TransferEdge(E, Standard_False);
if (!ent.IsNull()) Seq->Append(ent);
}
}
}
@@ -537,7 +537,7 @@ Handle(IGESData_IGESEntity) BRepToIGES_BRWire ::TransferWire
Standard_Integer nbedges = Seq->Length();
Handle(IGESData_HArray1OfIGESEntity) Tab;
if ( nbedges == 1 ) {
res = ent;
res = GetCasted(IGESData_IGESEntity, Seq->Value(1));
}
else if ( nbedges >= 2) {
Tab = new IGESData_HArray1OfIGESEntity(1,nbedges);

14
src/TopoDSToStep/TopoDSToStep_WireframeBuilder.cxx
View File

@@ -54,6 +54,9 @@
#include <TopExp_Explorer.hxx>
#include <TopLoc_Location.hxx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_NullObject.hxx>
#include <StepGeom_CartesianPoint.hxx>
#include <StepGeom_Curve.hxx>
#include <StepGeom_SurfaceCurve.hxx>
@@ -178,8 +181,15 @@ Standard_Boolean TopoDSToStep_WireframeBuilder::
//?? curveList->Append(Gpms);
return Standard_True;
}
BRepAdaptor_Curve CA ( anEdge );
BRepAdaptor_Curve CA;
try {
OCC_CATCH_SIGNALS
CA.Initialize (anEdge);
}
catch (Standard_NullObject) {
return Standard_False;
}
// Vertices
TopoDS_Vertex Vfirst, Vlast;