A shape's orientation within its parent, in OpenCascade's own terms. forward and reversed decide
which way a face points and therefore which side is material; internal and external mark shapes
that lie inside or outside the volume without bounding it.
A shape's orientation within its parent, in OpenCascade's own terms. forward and reversed decide which way a face points and therefore which side is material; internal and external mark shapes that lie inside or outside the volume without bounding it.