Name

PSBISI − Specifies the back interior style index for drawing back-facing area primitives. 

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

Old Syntax

DSBISI (ISTYLI)

Argument       Data Type      Access   Description
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ISTYLI         Integer        Read     Back interior style index
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New Syntax

PSBISI (ISTYLI)

Argument       Data Type      Access   Description
---------------------------------------------------------------------------
ISTYLI         Integer        Read     Back interior style index
---------------------------------------------------------------------------

Description

PSBISI specifies the back interior style index Digital PHIGS uses to draw back-facing 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 style index element. 
 

During structure traversal, Digital PHIGS uses the back interior style index for area-defining facets that are back facing only, as follows:

•For interior styles HOLLOW and SOLID, Digital PHIGS does not use the back interior style index. 

•For interior style PATTERN, the index value is greater than 0 and is an index into the pattern table of the workstation. 

•For interior style HATCH, the index value is greater than 0 and is an index into the hatch table of the workstation. 

•During structure traversal, if the specified style index is undefined, the function substitutes style index 1. 

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

The new function syntax conforms to the ISO Fortran standard.  Digital recommends that you code using the new function syntax. 

See Also

PQIFP
PSBIS
PSFDM
PSIASF
PSIP
PSISI