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The graPHIGS Programming Interface: ISO PHIGS Subroutine Reference

SET PATTERN REFERENCE POINT (PHOP,*,STOP,*)

Purpose

Use Set Pattern Reference Point to insert a Set Pattern Reference Point structure element into the open structure following the element pointer or replace the element pointed at by the element pointer with a Set Pattern Reference Point structure element, depending on the current edit mode.

This structure element specifies a two-dimensional pattern reference point. The z coordinate is assumed to be zero. The pattern reference vectors are assumed to be (1,0,0) and (0,1,0). At structure traversal time, the graPHIGS API uses this pattern reference point and assumed pattern reference vectors to display fill area and fill area set primitives when the currently selected interior style is set to PATTERN (Set Interior Style).

The traversal default value for pattern reference point is (0.0,0.0,0.0). The traversal default values for pattern reference vectors are (1,0,0) and (0,1,0).

Note:

The graPHIGS API currently ignores this structure element at structure traversal time.

Language Bindings

C

pset_pat_ref_point (pat_ref_point)

Input Parameters

const Ppoint *pat_ref_point
Pattern reference point in MC.

FORTRAN

PSPARF (rfx, rfy)

Input Parameters

real rfx
x coordinate of the pattern reference point in MC.

real rfy
y coordinate of the pattern reference point in MC.

Errors

5
Function Requires State (PHOP,*,STOP,*)

Related Subroutines

  • Set Pattern Reference Point And Vectors

  • Set Pattern Size


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