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The graPHIGS Programming Interface : Subroutine Reference

GPQAAF - Inquire Advanced Attribute Facilities

GPQAAF (wstype, attrib, start, number, errind, totnum, enum)

Note:

This subroutine is a Workstation Description Table (WDT) inquiry. For an overview, see "WDT Inquiries."

Purpose

Use GPQAAF to inquire the list of enumerations of an attribute that are supported by a specific workstation.

If the information is available, then the graPHIGS API sets the error indicator to zero and returns the values in the output parameter. If the error indicator is 543 (the start value exceeds the extent of the available data), then only the total number (totnum) parameter is set. If the inquired information is unavailable, then the error indicator (errind) contains the error number indicating the reason, and the values returned in the output parameter are unpredictable.

Parameters

wstype -- specified by user, 8-byte character string

Workstation type.

attrid -- specified by user, fullword integer

Attribute identifier being inquired (1=EDGE_FLAG, 2=FACE_DISTINGUISH_MODE, 3=LIGHTING_CALCULATION_MODE, 4=POLYGON_CULLING, 5=POLYHEDRON_EDGE_CULLING, 6=POLYLINE_END_TYPE, 8=INTERIOR_SHADING_METHODS, 10=REFLECTANCE_MODES )

start -- specified by user, fullword integer

Starting member of the list of supported enumerations for the specified attribute (>=1)

number -- specified by user, fullword integer

Number of supported enumerations requested (>=0)

errind -- returned by the graPHIGS API, fullword integer

Error indicator. If the error indicator is zero, the request has been completed. Otherwise, one of the following errors exists:
23
SPECIFIED WORKSTATION TYPE DOES NOT EXIST
35
WORKSTATION HAS ONLY INPUT CAPABILITIES
314
AN ATTRIBUTE IDENTIFIER IS INVALID
538
START VALUE < ONE
539
REQUESTED NUMBER < ZERO
543
START EXCEEDS DATA EXTENT. TOTAL NUMBER AVAILABLE RETURNED
548
SPECIFIED WORKSTATION TYPE CANNOT BE LOADED

totnum -- returned by the graPHIGS API, fullword integer

Total number of supported enumerations for the specified attribute.

enum -- returned by the graPHIGS API, array of fullword integers

List of supported enumerations for the specified attribute.

  • 1 - Edge Flag (1=OFF, 2=ON, 3=GEOMETRY_ONLY )

  • 2 - Face Distinguish Mode (1=NONE, 2=COLOR_SURFACE_PROPERTIES )

  • 3 - Lighting Calculation Mode (1=NONE, 2=PER_AREA, 3=PER_VERTEX )

  • 4 - Polygon Culling (1=NONE, 2=BACK, 3=FRONT )

  • 5 - Polyhedron Edge Culling (1=NONE, 2=BOTH_BACK, 3=BOTH_FRONT, 4=BOTH_BACK_BOTH_FRONT, 5=BACK_AND_FRONT, 6=LEAST_ONE_BACK, 7=LEAST_ONE_FRONT )

  • 6 - Polyline End Type (1=FLAT, 2=ROUND, 3=SQUARE )

  • 8 - Interior Shading Methods (1=SHADING_NONE, 2=SHADING_COLOR, 3=SHADING_DATA )

  • 10 - Reflectance Mode (1=REFLECTANCE_NONE, 2=AMB, 3=AMB_DIFF, 4=AMB_DIFF_SPEC )

    • Error Codes

    None

    Related Subroutines

    GPPLET
    Set Polyline End Type
    GPEF
    Set Edge Flag
    GPFDMO
    Set Face Distinguish Mode
    GPLMO
    Set Lighting Calculation Mode
    GPPGC
    Set Polygon Culling
    GPPHEC
    Set Polyhedron Edge Culling
    GPQRCT
    Inquire Realized Connection Type

    RCP code

    201339411 (X'0C003213')

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