ISO 10303-214:2010(E)
A Faceted_closed_shell is a collection of at least four Faceted_face objects that bounds a region in three-dimensional space. The topological normal of the shell is defined as being directed from the finite to the infinite region. A Faceted_closed_shell shall not self-intersect.
The data associated with a Faceted_closed_shell are the following:
shell_boundary
The shell_boundary specifies the planar faces that represent the boundary of a closed shell.
See faceted_closed_shell to faceted_face for the application assertion.
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