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0026498: BRepOffsetAPI_MakeOffset causes segmentation fault

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Test case for issue CR26498
This commit is contained in:
isn 2015-08-27 13:52:14 +03:00 committed by ski
parent e43a4f2bd9
commit 7642e2d02d
2 changed files with 61 additions and 0 deletions
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19
src/BRepFill/BRepFill_OffsetWire.cxx
View File

@ -222,6 +222,8 @@ static void MakeOffset
const GeomAbs_JoinType theJoinType,
const TopoDS_Vertex * Ends);
Standard_Boolean CheckSmallParamOnEdge(const TopoDS_Edge& anEdge);
//=======================================================================
//function : KPartCircle
//purpose :
@ -1379,6 +1381,8 @@ void BRepFill_OffsetWire::MakeWires()
TopExp::Vertices (E,V1,V2);
if (V1.IsSame(V2) && IsSmallClosedEdge(E, V1))
continue; //remove small closed edges
if (!CheckSmallParamOnEdge(E))
continue;
if (!MVE.Contains(V1)) {
TopTools_ListOfShape empty;
MVE.Add(V1,empty);
@ -2756,3 +2760,18 @@ static void QuasiFleche(const Adaptor3d_Curve& C,
}
}
Standard_Boolean CheckSmallParamOnEdge(const TopoDS_Edge& anEdge)
{
const BRep_ListOfCurveRepresentation& aList = ((Handle(BRep_TEdge)::DownCast(anEdge.TShape()))->Curves());
if (!aList.IsEmpty())
{
Handle( BRep_CurveRepresentation ) CRep = ((Handle(BRep_TEdge)::DownCast(anEdge.TShape()))->Curves()).First();
Standard_Real f = (Handle(BRep_GCurve)::DownCast(CRep))->First();
Standard_Real l = (Handle(BRep_GCurve)::DownCast(CRep))->Last();
if (Abs (l - f) < Precision::PConfusion())
return Standard_False;
}
return Standard_True;
}

42
tests/bugs/modalg_6/bug26498 Executable file
View File

@ -0,0 +1,42 @@
puts "============"
puts "OCC26498"
puts "============"
puts ""
#######################################################################
# BRepOffsetAPI_MakeOffset causes segmentation fault
#######################################################################
polyline w 0 0 0 0.2 0 0 0.2 0.2 0 0.4 0.2 0 0.4 0.4 0 -0.06 0.57 0
smallview
display w
fit
if [catch { openoffset r w 1 -0.2 i } ] {
puts "Error : openoffset is wrong"
} else {
renamevar r_1 result
set length 0.272485
set nbshapes_expected "
Number of shapes in shape
VERTEX : 3
EDGE : 2
WIRE : 1
FACE : 0
SHELL : 0
SOLID : 0
COMPSOLID : 0
COMPOUND : 0
SHAPE : 6
"
checknbshapes result -ref ${nbshapes_expected} -t -m "Offset"
checkshape result
display result
fit
}
set only_screen_axo 1