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0030958: BRepOffsetAPI_ThruSections operation raises an exception while building history

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Correct methods Build and Generated:
use BRepTools_WireExplorer instead of TopExp_Explorer or TopoDS_Iterator, for compatibility with previous computations.
This commit is contained in:
jgv
2019-10-21 13:50:10 +03:00
committed by bugmaster
parent 4c26106f76
commit bf97419a18
3 changed files with 110 additions and 23 deletions
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40
src/BRepOffsetAPI/BRepOffsetAPI_ThruSections.cxx
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@@ -397,29 +397,30 @@ void BRepOffsetAPI_ThruSections::Build()
Standard_Integer IndFirstSec = 1;
if (Georges.IsDegeneratedFirstSection())
IndFirstSec = 2;
TopoDS_Shape aWorkingSection = WorkingSections(IndFirstSec);
TopoDS_Wire aWorkingSection = TopoDS::Wire(WorkingSections(IndFirstSec));
myNbEdgesInSection += aWorkingSection.NbChildren();
for (Standard_Integer ii = 1; ii <= myWires.Length(); ii++)
{
TopExp_Explorer Explo(myWires(ii), TopAbs_EDGE);
for (; Explo.More(); Explo.Next())
TopoDS_Iterator itw(myWires(ii));
for (; itw.More(); itw.Next())
{
const TopoDS_Edge& anEdge = TopoDS::Edge(Explo.Current());
const TopoDS_Edge& anEdge = TopoDS::Edge(itw.Value());
Standard_Integer aSign = 1;
TopoDS_Vertex Vfirst, Vlast;
TopExp::Vertices(anEdge, Vfirst, Vlast);
TopTools_ListOfShape aNewEdges = Georges.GeneratedShapes(anEdge);
TColStd_ListOfInteger IList;
aWorkingSection = WorkingSections(ii);
aWorkingSection = TopoDS::Wire(WorkingSections(ii));
Standard_Integer NbNewEdges = aNewEdges.Extent();
TopTools_ListIteratorOfListOfShape itl(aNewEdges);
for (Standard_Integer kk = 1; itl.More(); itl.Next(),kk++)
{
const TopoDS_Edge& aNewEdge = TopoDS::Edge(itl.Value());
Standard_Integer inde = 1;
for (TopoDS_Iterator itw (aWorkingSection); itw.More(); itw.Next(), inde++)
BRepTools_WireExplorer wexp(aWorkingSection);
for (; wexp.More(); wexp.Next(), inde++)
{
const TopoDS_Shape& aWorkingEdge = itw.Value();
const TopoDS_Shape& aWorkingEdge = wexp.Current();
if (aWorkingEdge.IsSame(aNewEdge))
{
aSign = (aWorkingEdge.Orientation() == TopAbs_FORWARD)? 1 : -1;
@@ -1295,12 +1296,14 @@ BRepOffsetAPI_ThruSections::Generated(const TopoDS_Shape& S)
Standard_Integer Eindex = myVertexIndex(S);
Standard_Integer Vindex = (Eindex > 0)? 0 : 1;
Eindex = Abs(Eindex);
const TopoDS_Shape& FirstSection = myWires(1);
const TopoDS_Wire& FirstSection = TopoDS::Wire(myWires(1));
TopoDS_Edge FirstEdge;
TopoDS_Iterator itw(FirstSection);
for (Standard_Integer inde = 1; itw.More(); itw.Next(),inde++)
TopoDS_Vertex FirstVertexOfFirstEdge;
BRepTools_WireExplorer wexp(FirstSection);
for (Standard_Integer inde = 1; wexp.More(); wexp.Next(),inde++)
{
FirstEdge = TopoDS::Edge(itw.Value());
FirstEdge = wexp.Current();
FirstVertexOfFirstEdge = wexp.CurrentVertex();
if (inde == Eindex)
break;
}
@@ -1330,7 +1333,20 @@ BRepOffsetAPI_ThruSections::Generated(const TopoDS_Shape& S)
FirstEdgeInFace = Explo.Current();
TopoDS_Vertex VV [2];
TopExp::Vertices(FirstEdge, VV[0], VV[1]);
FirstVertex = VV[Vindex];
if (Vindex == 0)
{
if (VV[0].IsSame(FirstVertexOfFirstEdge))
FirstVertex = VV[0];
else
FirstVertex = VV[1];
}
else //Vindex == 1
{
if (VV[0].IsSame(FirstVertexOfFirstEdge))
FirstVertex = VV[1];
else
FirstVertex = VV[0];
}
const TopTools_ListOfShape& Elist = VEmap.FindFromKey(FirstVertex);
TopTools_ListIteratorOfListOfShape itl(Elist);
TopAbs_Orientation anEdgeOr = (Vindex == 0)? TopAbs_REVERSED : TopAbs_FORWARD;