PK_facet_consistent_parms_t

typedef int PK_facet_consistent_parms_t;

Used in:

PK_TOPOL_facet_choice_2_o_t
PK_TOPOL_render_facet_go_o_t

For facets on periodic surfaces, the vertices within a facet are said to be
consistent if they lie within half a period of each other.

If facets are being output as strips, the vertices within the strip are said to
be consistent if the strip is composed of consistently parameterised
triangular facets and all triplets of vertices within the strip have surface
parameters that lie within half a period of each other.

This field can take any one of the following values.
     PK_facet_consistent_parms_su_c  : some facet vertex within each facet or
                                       strip will have parameters in the first
                                       period and all other vertices within
                                       the facet or strip will be made
                                       consistent with this.
     PK_facet_consistent_parms_fa_c  : only produces different results from
                                       PK_facet_consistent_parms_su_c if the
                                       facets do not cover the whole of the
                                       period.  In this case each facet vertex
                                       is given a unique parameter value.
                                       Facet vertices that fall within the face
                                       uvbox, as returned from
                                       PK_FACE_find_uvbox, will have parameters
                                       lying inside this box.  All other facet
                                       vertices will be made consistent with
                                       those inside the face's box.  In cases
                                       where the facets do not span the whole
                                       of the period but the face uvbox is the
                                       whole period, some facet vertices may
                                       not lie inside the face's uvbox.
     PK_facet_consistent_parms_no_c  : do not ensure that facet vertices have
                                       consistent parameters

See Options for outputting topological information and
GO options for more information.