C++
Adesk::Boolean isNClosed() const;
Description
Returns Adesk::kTrue if the PolygonMesh is closed in the N direction, or Adesk::kFalse if the PolygonMesh is open in the N direction.
A mesh closed in the N direction is treated as continuous from the last column on to the first column.
The N closed status is reflected in bit 6 of DXF group code 70 (that is, if bit 6 is set, then the PolygonMesh is closed in the N direction).