PK_ERROR_code_t  PK_FACE_make_sheet_body
(
--- received arguments ---
int              n_faces,            --- number of faces
const PK_FACE_t  faces[],            --- array of faces

--- returned arguments ---
PK_BODY_t *const body                --- sheet body
)


This function creates a sheet body from a collection of faces.


Specific Errors:
    PK_ERROR_not_in_same_part       faces not all from same body
    PK_ERROR_missing_geom           some face does not have a surface
    PK_ERROR_non_manifold           faces would only make a disconnected or
                                    general body


The geometry, topology and associated data of the faces is copied into a
new sheet body.  The given faces must belong to the same body and must form
a single connected set which results in a valid sheet.  Every face must have a
surface attached.