PK_facet_sing_topol_t

typedef int PK_facet_sing_topol_t;

Used in:

PK_TOPOL_facet_mesh_2_o_t

This datatype is used to indicate what facet topology is required at a
singularity.

It has the values:

    PK_facet_sing_topol_default_c  around the singularity is a set of
                                   facets each of which share the vertex at the
                                   singularity.

    PK_facet_sing_topol_degen_c    the singularity is treated as a surface
                                   boundary. Each facet that has an apex at the
                                   singularity has its own vertex at the
                                   singularity. Any pair of visually adjacent
                                   facets which meet at the singularity are
                                   actually separated by a degenerate
                                   triangular facet.