PK_render_vis_t

typedef int PK_render_vis_t;

Used in:

PK_TOPOL_render_line_o_t

This datatype is used to determine whether any visibility evaluation
is to be performed.  It has the values:

    PK_render_vis_no_c            no visibility evaluated (default)
    PK_render_vis_hid_c           don't output hidden lines
    PK_render_vis_inv_c           output hidden lines marked as invisible
    PK_render_vis_inv_draft_c     output hidden lines and distinguish between
                                  those hidden by other lines and those
                                  hidden by faces.
    PK_render_vis_extended_c      visibility is evaluated.  The information
                                  output is controlled by the 'invisible',
                                  'drafting' and 'self_hidden' options of
                                  the PK_TOPOL_render_line_o_t structure.

See Visibility for more information.