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0025578: SIGSEGV in BRepSweep_Rotation in case of singularities

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Eliminating degenerated edges
This commit is contained in:
azv
2015-01-13 17:44:38 +03:00
committed by bugmaster
parent 89bc1237a4
commit 79186c39b3
1 changed files with 12 additions and 3 deletions
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15
src/BRepSweep/BRepSweep_Rotation.cxx
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@@ -822,7 +822,17 @@ Standard_Boolean BRepSweep_Rotation::HasShape
{
if(aDirS.Type()==TopAbs_EDGE&&
aGenS.ShapeType()==TopAbs_EDGE){
return !IsInvariant(aGenS);
// Verify that the edge has entrails
const TopoDS_Edge& anEdge = TopoDS::Edge(aGenS);
Standard_Boolean hasGeom = !BRep_Tool::Degenerated(anEdge);
if (hasGeom)
{ // The edge is not degenerated. Check if it has no curve
Standard_Real aPFirst, aPLast;
TopLoc_Location aLoc;
Handle(Geom_Curve) aCurve = BRep_Tool::Curve(anEdge, aLoc, aPFirst, aPLast);
hasGeom = !aCurve.IsNull();
}
return hasGeom && !IsInvariant(aGenS);
}
else{
return Standard_True;
@@ -843,8 +853,7 @@ Standard_Boolean BRepSweep_Rotation::IsInvariant
Standard_Real First,Last;
Handle(Geom_Curve)
C = BRep_Tool::Curve(TopoDS::Edge(aGenS),Loc,First,Last);
Handle(Standard_Type) TheType = C->DynamicType();
if ( TheType == STANDARD_TYPE(Geom_Line)) {
if (C.IsNull() || C->DynamicType() == STANDARD_TYPE(Geom_Line)) {
TopoDS_Vertex V1, V2;
TopExp::Vertices(TopoDS::Edge(aGenS), V1, V2);
return ( IsInvariant(V1) && IsInvariant(V2));