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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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58
src/BRepOffset/BRepOffset_Offset.cxx
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@@ -1613,50 +1613,52 @@ TopoDS_Shape BRepOffset_Offset::Generated(const TopoDS_Shape& Shape) const
{
TopoDS_Shape aShape;
switch ( myShape.ShapeType()) {
case TopAbs_FACE:
switch ( myShape.ShapeType())
{
case TopAbs_FACE:
{
TopExp_Explorer exp (myShape.Oriented(TopAbs_FORWARD), TopAbs_EDGE);
TopExp_Explorer expo(myFace .Oriented(TopAbs_FORWARD), TopAbs_EDGE);
for ( ; exp.More() && expo.More(); exp.Next(), expo.Next()) {
if ( Shape.IsSame(exp.Current())) {
if ( myShape.Orientation() == TopAbs_REVERSED)
aShape = expo.Current().Reversed();
else
aShape = expo.Current();
}
TopExp_Explorer exp (myShape.Oriented(TopAbs_FORWARD), TopAbs_EDGE);
TopExp_Explorer expo (myFace .Oriented(TopAbs_FORWARD), TopAbs_EDGE);
for (; exp.More() && expo.More(); exp.Next(), expo.Next())
{
if (Shape.IsSame (exp.Current()))
{
if (myShape.Orientation() == TopAbs_REVERSED)
aShape = expo.Current().Reversed();
else
aShape = expo.Current();
break;
}
}
}
break;
case TopAbs_EDGE:
case TopAbs_EDGE:
// have generate a pipe.
{
TopoDS_Vertex V1, V2;
TopExp::Vertices(TopoDS::Edge(myShape), V1, V2);
TopExp_Explorer expf(myFace .Oriented(TopAbs_FORWARD), TopAbs_WIRE);
TopExp_Explorer expo(expf.Current().Oriented(TopAbs_FORWARD),
TopAbs_EDGE);
TopExp_Explorer expf(myFace.Oriented(TopAbs_FORWARD), TopAbs_WIRE);
TopExp_Explorer expo(expf.Current().Oriented(TopAbs_FORWARD), TopAbs_EDGE);
expo.Next();
expo.Next();
if ( V2.IsSame(Shape)) {
if ( expf.Current().Orientation() == TopAbs_REVERSED)
aShape = expo.Current().Reversed();
else
aShape = expo.Current();
if (expf.Current().Orientation() == TopAbs_REVERSED)
aShape = expo.Current().Reversed();
else
aShape = expo.Current();
}
else {
expo.Next();
if ( expf.Current().Orientation() == TopAbs_REVERSED)
aShape = expo.Current().Reversed();
else
aShape = expo.Current();
expo.Next();
if (expf.Current().Orientation() == TopAbs_REVERSED)
aShape = expo.Current().Reversed();
else
aShape = expo.Current();
}
if ( myFace.Orientation() == TopAbs_REVERSED)
aShape.Reverse();
if (myFace.Orientation() == TopAbs_REVERSED)
aShape.Reverse();
}
break;
default: