Synopsis

PDX_MSGT gdx_ReverseCurve(long option, MDA_PTR gdx_curve_ptr)

Purpose

Reverse a GDX curve entity

Description

Reverses a GDX curve entity such that the start point becomes the endpoint and vice versa. gdx_curve_ptr may reference any of the following GDX curve types:

.nf GDX_ARC GDX_COMP_CURVE GDX_CONIC GDX_POLYLINE GDX_SPLINE_CURVE GDX_NURB_CURVE GDX_OFFSET_CURVE GDX_TRIM_CURVE .fi .IP Note: 7 This function modifies the entity referenced by gdx_curve_ptr. If an error occurs while reversing the curve, it will be unlocked with MDA_INVALIDATE to restore the entity to its original state. Because of the way MDA_INVALIDATE works, the original entity will not be restored if @gdx_curve_ptr is locked in memory. This implies that the application should not have gdx_curve_ptr locked when calling this function so that if an error should occur, the original entity will be used next the time it is locked. .LP

Input

option

Options (not used)

gdx_curve_ptr

The valid GDX entity database pointer

Return

      GDX_NOERR
      GDX_ENTITYNOTCURVE
      Low level error return
      .fi