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

14
src/TopoDSToStep/TopoDSToStep_WireframeBuilder.cxx
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@ -54,6 +54,9 @@
#include <TopExp_Explorer.hxx> #include <TopExp_Explorer.hxx>
#include <TopLoc_Location.hxx> #include <TopLoc_Location.hxx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_NullObject.hxx>
#include <StepGeom_CartesianPoint.hxx> #include <StepGeom_CartesianPoint.hxx>
#include <StepGeom_Curve.hxx> #include <StepGeom_Curve.hxx>
#include <StepGeom_SurfaceCurve.hxx> #include <StepGeom_SurfaceCurve.hxx>
@ -178,8 +181,15 @@ Standard_Boolean TopoDSToStep_WireframeBuilder::
//?? curveList->Append(Gpms); //?? curveList->Append(Gpms);
return Standard_True; return Standard_True;
} }
BRepAdaptor_Curve CA ( anEdge ); BRepAdaptor_Curve CA;
try {
OCC_CATCH_SIGNALS
CA.Initialize (anEdge);
}
catch (Standard_NullObject) {
return Standard_False;
}
// Vertices // Vertices
TopoDS_Vertex Vfirst, Vlast; TopoDS_Vertex Vfirst, Vlast;

23
tests/bugs/iges/bug25843_iges Executable file
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@ -0,0 +1,23 @@
puts "============"
puts "OCC25843"
puts "============"
puts ""
#######################################################################
# Wire containing degenerated edge is not written to IGES / STEP
#######################################################################
restore [locate_data_file bug25843_onewire.brep] w
set aFile ${imagedir}/bug25843_onewire.igs
file delete ${aFile}
brepiges w ${aFile}
if { ![file exists ${aFile}] } {
puts "Error: Wire containing degenerated edge is not written to IGES file"
} else {
puts "OK: Wire containing degenerated edge is written to IGES file"
}
catch {exec chmod 777 ${aFile}}

23
tests/bugs/step/bug25843_step Executable file
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@ -0,0 +1,23 @@
puts "============"
puts "OCC25843"
puts "============"
puts ""
#######################################################################
# Wire containing degenerated edge is not written to IGES / STEP
#######################################################################
restore [locate_data_file bug25843_onewire.brep] w
set aFile ${imagedir}/bug25843_onewire.stp
catch { file delete ${aFile} }
stepwrite 0 w ${aFile}
if { ![file exists ${aFile}] } {
puts "Error: Wire containing degenerated edge is not written to STEP file"
} else {
puts "OK: Wire containing degenerated edge is written to STEP file"
}
catch {exec chmod 777 ${aFile}}