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The graPHIGS Programming Interface : Subroutine Reference
GPDFM - Set Data Filtering Method
| GPDFM
(minfm, magfm, boundu, boundv) |
Purpose
Use
GPDFM to insert a Set Data Filtering Method
structure element into the
open structure following the element pointer, or to replace the element
pointed at by the element pointer with a Set Data
Filtering Method structure element, depending upon the
current edit mode.
This element specifies the filtering methods
that the graPHIGS API uses to
perform data mapping on
subsequent area primitives.
When the data mapping method is
2=SINGLE_VALUE_UNIFORM
,
the boundv parameter is ignored.
The traversal default data filtering methods are:
- Minification:
- 1=SAMPLE_IN_BASE
- Magnification:
- 1=SAMPLE_IN_BASE
- U-dimension:
- 1=CLAMP
- V-dimension:
- 1=CLAMP
If any specified value is not supported on the
workstation,
then the default value is used.
Parameters
minfm -- specified by user, fullword integer
Minification filtering method (1=SAMPLE_IN_BASE, 2=INTERP_IN_BASE,
3=SAMPLE_IN_SQUARE_MM, 4=SAMPLE_IN_AND_INTERP_BTWN_SQUARE_MM,
5=INTERP_IN_SQUARE_MM, 6=INTERP_IN_AND_BTWN_SQUARE_MM, 7=SAMPLE_IN_RECT_MM,
8=SAMPLE_IN_AND_INTERP_BTWN_RECT_MM,
9=INTERP_IN_RECT_MM
).
magfm -- specified by user, fullword integer
Magnification filtering method (1=SAMPLE_IN_BASE, 2=INTERP_IN_BASE
).
boundu -- specified by user, fullword integer
u-dimension bounding method (1=CLAMP, 2=REPEAT
).
boundv -- specified by user, fullword integer
v-dimension bounding method (1=CLAMP, 2=REPEAT
).
Error Codes
- 5
- FUNCTION REQUIRES STATE STOP OR NROP (NOT STCL)
- 631
- FILTERING METHOD IS INVALID
- 632
- BOUNDING METHOD IS INVALID
Related Subroutines
- GPBDFM
- Set Back Data Filtering Method
- GPDMR
- Set Data Mapping Representation
RCP code
201343515
(X'0C00421B')
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