PK_TOPOL_fctab_vertex_normal_t

struct PK_TOPOL_fctab_vertex_normal_s
       {
       int        *normal;
       int        length;
       };
typedef struct PK_TOPOL_fctab_vertex_normal_s
               PK_TOPOL_fctab_vertex_normal_t;

Used in:

PK_TOPOL_facet_r_t

This is a support structure for PK_TOPOL_facet_r_t. It is an indexed table
which maps vertex indices (topology) into a table of 'normal' indices.