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0031148: Modeling Algorithms - Offset adjacent co-planar faces with different offset values

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Extend the Offset operation (Join Type "Intersection", mode "Complete") to allow different offset values on adjacent co-planar faces.
The gap between adjacent faces is closed by creating artificial face perpendicular to the face.

Adding test cases.
This commit is contained in:
emv
2019-10-11 07:23:19 +03:00
committed by bugmaster
parent 34e7ac6817
commit 420b38fde9
63 changed files with 3050 additions and 369 deletions
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46
src/BRepOffsetAPI/BRepOffsetAPI_MakeOffsetShape.cxx
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@@ -118,24 +118,14 @@ void BRepOffsetAPI_MakeOffsetShape::Build()
const TopTools_ListOfShape& BRepOffsetAPI_MakeOffsetShape::Generated (const TopoDS_Shape& S)
{
myGenerated.Clear();
if (myLastUsedAlgo == OffsetAlgo_JOIN && !myOffsetShape.ClosingFaces().Contains(S))
if (myLastUsedAlgo == OffsetAlgo_JOIN)
{
myOffsetShape.OffsetFacesFromShapes ().LastImage (S, myGenerated);
if (!myOffsetShape.ClosingFaces().IsEmpty())
{
// Reverse generated shapes in case of small solids.
// Useful only for faces without influence on others.
TopTools_ListIteratorOfListOfShape it(myGenerated);
for (; it.More(); it.Next())
it.Value().Reverse();
}
myGenerated = myOffsetShape.Generated (S);
}
else if (myLastUsedAlgo == OffsetAlgo_SIMPLE)
{
TopoDS_Shape aGenShape = mySimpleOffsetShape.Generated(S);
if (!aGenShape.IsNull())
if (!aGenShape.IsNull() && !aGenShape.IsSame (S))
myGenerated.Append(aGenShape);
}
@@ -143,33 +133,39 @@ const TopTools_ListOfShape& BRepOffsetAPI_MakeOffsetShape::Generated (const Topo
}
//=======================================================================
//function : GeneratedEdge
//function : Modified
//purpose :
//=======================================================================
const TopTools_ListOfShape& BRepOffsetAPI_MakeOffsetShape::GeneratedEdge (const TopoDS_Shape& S)
const TopTools_ListOfShape& BRepOffsetAPI_MakeOffsetShape::Modified (const TopoDS_Shape& S)
{
myGenerated.Clear();
if (myLastUsedAlgo == OffsetAlgo_JOIN)
{
myOffsetShape.OffsetEdgesFromShapes().LastImage (S, myGenerated);
if (!myGenerated.IsEmpty())
{
if (S.IsSame(myGenerated.First()))
myGenerated.RemoveFirst();
}
myGenerated = myOffsetShape.Modified (S);
}
else if (myLastUsedAlgo == OffsetAlgo_SIMPLE)
{
TopoDS_Shape aGenShape = mySimpleOffsetShape.Generated(S);
if (!aGenShape.IsNull())
TopoDS_Shape aGenShape = mySimpleOffsetShape.Modified(S);
if (!aGenShape.IsNull() && !aGenShape.IsSame (S))
myGenerated.Append(aGenShape);
}
return myGenerated;
}
//=======================================================================
//function : IsDeleted
//purpose :
//=======================================================================
Standard_Boolean BRepOffsetAPI_MakeOffsetShape::IsDeleted (const TopoDS_Shape& S)
{
if (myLastUsedAlgo == OffsetAlgo_JOIN)
{
return myOffsetShape.IsDeleted(S);
}
return Standard_False;
}
//=======================================================================
//function : GetJoinType
//purpose : Query offset join type.