PQPRFR(3g) — Subroutines

Name

PQPRFR − Returns predefined reflectance representation information for the index.

Operating States: PHOP, ∗, ∗, ∗
PHIGS PLUS function

Syntax

PQPRFR (WTYPE, PRFI, MLDR, ERRIND, RFM, RPTYPE, LDR, DATREC)

Argument          Data Type      Access    Description
---------------------------------------------------------------------------
WTYPE             Integer        Read      Workstation type
PRFI              Integer        Read      Predefined reflectance index
MLDR              Integer        Read      Dimension of the data record array
ERRIND            Integer        Write     Error indicator
RFM               Integer        Write     Reflectance model
RPTYPE            Integer        Write     Reflectance properties type
LDR               Integer        Write     Length of the data record array
DATREC(MLDR)      Character ∗80 Write     Data record
---------------------------------------------------------------------------

Constants

Defined Argument     Constant     Description
---------------------------------------------------------------------------
RFMP                 NORM         No reflectance
                     PARM         Ambient reflectance
                     PADRM        Ambient and diffuse reflectance
                     PADSRM       Ambient, diffuse, and specular reflectance
RPTYPE               PSRPT        Simple reflectance
---------------------------------------------------------------------------

Description

PQPRFR queries the workstation description table and returns the predefined reflectance representation of the specified index.

Digital PHIGS Version 3.1 does not support this function.

Data Record Information

If RPTYPE is PSRPT, the data record is as follows:

INTEGER IL    = 2+∗      Number of integer elements
INTEGER IA(1) =          Color type
INTEGER IA(2) =          Number of color value components (NCC)
INTEGER RL    = 4+∗      Number of real elements
REAL RA(1)    =          Ambient reflection coefficient
REAL RA(2)    =          Diffuse reflection coefficient
REAL RA(3)    =          Specular reflection coefficient
REAL RA(4)    =          Specular exponent
     SL       = 0
     LSTR     = ()
     STR      = ()
     If the color type is PINDIR:

         IA(3) =   Specular color index
     If the color type is PRGB, PCIE, PHSV, or PHLS:
         RA     =   Elements 5 through 4+NCC contain the color values