Name

pset_back_int_shad_method − Specifies the back interior shading method for displaying back-facing portions of area primitives. 

 
Operating States: PHOP, ∗, STOP, ∗
PHIGS PLUS function
Creates a structure element

Syntax

void pset_back_int_shad_method (
  Pint     method   /∗ (I) Interior shading method  ∗/
)

Constants

Defined Argument    Constant                      Description
---------------------------------------------------------------------------
method              PINT_SHAD_METHOD_NONE         No interpolation,
                                                  constant shading
                    PINT_SHAD_METHOD_COLR         Linear interpolation of
                                                  color
                    PINT_SHAD_METHOD_DATA         Interpolation of color
                                                  for the WITH DATA
                                                  primitives
                    PINT_SHAD_METHOD_DATA_DOT     Interpolation of color
                                                  based on dot products
                    PINT_SHAD_METHOD_DATA_NORM    Interpolation of color
                                                  based on normals
---------------------------------------------------------------------------

Description

pset_back_int_shad_method specifies the back interior shading method Digital PHIGS uses to display back-facing portions of area primitives.  Depending on the edit mode, this function either inserts the new structure element directly after the pointer or replaces the element indicated by the pointer.  The pointer then points to the new set back interior shading method element. 

During structure traversal, Digital PHIGS sets the current back interior shading method entry in the PHIGS traversal state list to the value associated with the element.  When the current back interior shading method ASF entry in the state list is INDIVIDUAL, Digital PHIGS uses this value to display subsequent back-facing portions of area primitives.  If the specified interior shading method is not available on a workstation, Digital PHIGS uses interior shading method 1. 

If Digital PHIGS is in immediate mode, it performs this function immediately, but the function does not create a structure element. 

See Also

pfill_area
pfill_area3
pfill_area_set
pfill_area_set3
pfill_area_set_data
pfill_area_set3_data
pe_fill_area_set_wshape
pe_fill_area_set3_wshape
pe_fill_area_wshape
pe_fill_area3_wshape
pinq_int_facs_plus
pnon_uniform_b_spline_surf3
pquad_mesh_data
pquad_mesh3_data
pset_back_int_style_ind
pset_facet_disting_mode
pset_indiv_asf
pset_int_rep_plus
pset_int_shad_method
ptri_strip3_data