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0028601: ShapeFix_Shape increases tolerance of sub-shapes of a valid shape

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- Avoid increase of edge/vertex tolerance if the distance between 3D curve and p-curve is within old tolerance.
This commit is contained in:
imn
2017-04-14 15:15:18 +03:00
committed by bugmaster
parent ec96437207
commit 0af424c23c
3 changed files with 38 additions and 12 deletions
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27
src/ShapeFix/ShapeFix.cxx
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@@ -210,6 +210,7 @@ Standard_Boolean ShapeFix::SameParameter(const TopoDS_Shape& shape,
Standard_Real tol0 = BRep_Tool::Tolerance(edge);
tol = tol0;
Standard_Real tol2 = tol*tol;
Standard_Boolean isChanged = Standard_False;
const Standard_Integer NCONTROL = 23;
for ( Standard_Integer i = 0; i < NCONTROL; i++ )
{
@@ -217,17 +218,23 @@ Standard_Boolean ShapeFix::SameParameter(const TopoDS_Shape& shape,
gp_Pnt pnt = crv->Value ( par );
gp_Pnt prj = ACS.Value( par );
Standard_Real dist = pnt.SquareDistance(prj);
if ( tol2 < dist )
tol2 = dist;
}
tol = 1.00005 * sqrt(tol2); // coeff: see trj3_pm1-ct-203.stp #19681, edge 10
if ( tol >= tol0 )
{
B.UpdateEdge ( edge, tol );
for ( TopoDS_Iterator itV(edge); itV.More(); itV.Next() )
if ( tol2 < dist )
{
TopoDS_Shape S = itV.Value();
B.UpdateVertex ( TopoDS::Vertex ( S ), tol );
tol2 = dist;
isChanged = Standard_True;
}
}
if ( isChanged )
{
tol = 1.00005 * sqrt(tol2); // coeff: see trj3_pm1-ct-203.stp #19681, edge 10
if ( tol >= tol0 )
{
B.UpdateEdge ( edge, tol );
for ( TopoDS_Iterator itV(edge); itV.More(); itV.Next() )
{
TopoDS_Shape S = itV.Value();
B.UpdateVertex ( TopoDS::Vertex ( S ), tol );
}
}
}
}