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0025766: Exception in BRepAlgo_Section

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class TopOpeBRep_FacesIntersector
method
static void MergeWLinesIfAllSegmentsAlongRestriction(IntPatch_SequenceOfLine&           theSlin,
						     const Handle(Adaptor3d_HSurface)&  theSurface1,
						     const Handle(Adaptor3d_TopolTool)& theDomain1,
						     const Handle(Adaptor3d_HSurface)&  theSurface2,
						     const Handle(Adaptor3d_TopolTool)& theDomain2,
						     const Standard_Real                theTolArc)
Protection from null wlines has been added.

Test-case for issue #25766
This commit is contained in:
emv 2015-02-05 16:19:47 +03:00 committed by bugmaster
parent e8746a262f
commit a4d5c9abcc
2 changed files with 35 additions and 32 deletions
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56
src/TopOpeBRep/TopOpeBRep_FacesIntersector.cxx
View File

@ -1167,38 +1167,25 @@ static void MergeWLinesIfAllSegmentsAlongRestriction(IntPatch_SequenceOfLine&
Standard_Real Fp = 0., Lp = 0.;
if( WLineRank == 1 )
{
Handle(IntSurf_LineOn2S) aLineOn2S = new IntSurf_LineOn2S();
Standard_Integer arcnumber = GetArc(theSlin,WLineRank,theSurface1,theDomain1,theSurface2,testPoint,TolVrtx,aLineOn2S,Fp,Lp);
if( arcnumber == 0 )
return;
Handle(IntPatch_WLine) anWLine = NULL;
anWLine = GetMergedWLineOnRestriction(theSlin,TolVrtx,aLineOn2S);
#ifdef OCCT_DEBUG
cout << "*** TopOpeBRep_FaceIntersector: Merge WLines on Restriction S1 to WLine ***" << endl;
Handle(IntSurf_LineOn2S) aLineOn2S = new IntSurf_LineOn2S();
//
Standard_Integer arcnumber = (WLineRank == 1) ?
GetArc(theSlin,WLineRank,theSurface1,theDomain1,theSurface2,testPoint,TolVrtx,aLineOn2S,Fp,Lp) :
GetArc(theSlin,WLineRank,theSurface2,theDomain2,theSurface1,testPoint,TolVrtx,aLineOn2S,Fp,Lp);
//
if (arcnumber == 0) {
return;
}
//
Handle(IntPatch_WLine) anWLine = GetMergedWLineOnRestriction(theSlin,TolVrtx,aLineOn2S);
if (!anWLine.IsNull()) {
theSlin.Clear();
theSlin.Append(anWLine);
#ifdef DEB
cout << "*** TopOpeBRep_FaceIntersector: Merge WLines on Restriction "
<< ((WLineRank == 1) ? "S1" : "S2") << " to WLine***" << endl;
#endif
theSlin.Clear();
theSlin.Append(anWLine);
}
else
{
Handle(IntSurf_LineOn2S) aLineOn2S = new IntSurf_LineOn2S();
Standard_Integer arcnumber = GetArc(theSlin,WLineRank,theSurface2,theDomain2,theSurface1,testPoint,TolVrtx,aLineOn2S,Fp,Lp);
if( arcnumber == 0 )
return;
Handle(IntPatch_WLine) anWLine = NULL;
anWLine = GetMergedWLineOnRestriction(theSlin,TolVrtx,aLineOn2S);
#ifdef OCCT_DEBUG
cout << "*** TopOpeBRep_FaceIntersector: Merge WLines on Restriction S2 to WLine***" << endl;
#endif
theSlin.Clear();
theSlin.Append(anWLine);
}
}
}
//=========================================================================================
@ -1498,6 +1485,11 @@ static Handle(IntPatch_WLine) GetMergedWLineOnRestriction(IntPatch_SequenceOfLin
const Standard_Real& theVrtxTol,
const Handle(IntSurf_LineOn2S)& theLineOn2S)
{
Handle(IntPatch_WLine) mWLine;
if (theLineOn2S->NbPoints() == 0) {
return mWLine;
}
//
IntSurf_TypeTrans trans1 = IntSurf_Undecided;
IntSurf_TypeTrans trans2 = IntSurf_Undecided;
Standard_Integer i = 0;
@ -1515,7 +1507,7 @@ static Handle(IntPatch_WLine) GetMergedWLineOnRestriction(IntPatch_SequenceOfLin
trans2 = aWLine->TransitionOnS2();
}
Handle(IntPatch_WLine) mWLine = new IntPatch_WLine(theLineOn2S, Standard_False, trans1, trans2);
mWLine = new IntPatch_WLine(theLineOn2S, Standard_False, trans1, trans2);
Standard_Integer NbPnts = mWLine->NbPnts();
IntPatch_Point aFirstVertex, aLastVertex;

11
tests/bugs/modalg_5/bug25766 Normal file
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@ -0,0 +1,11 @@
puts "========"
puts "OCC25766"
puts "========"
puts ""
########################################################################################
# Exception is raised during building section using BRepAlgo_Section on attached faces
########################################################################################
restore [locate_data_file OCC25766_surface1.brep] b1
restore [locate_data_file OCC25766_surface2.brep] b2
section r b1 b2