Synopsis

PDX_MSGT gdx_ExtractNurbIsoCurve(long option, T_GDX_NURB_SURF *sur, int model, double uv, void *gdx_cur)

Purpose

Extract an iso-parametric curve from a GDX NURB Surface.

Description

This routine extracts an iso-parametric curve from a GDX NURB Surface.

Input

option

GDX_COMMIT

The entity creation option. If set, the GDX entity will be commited to the data base. Default is do not commit.

GDX_UVALUE

If set, then uv is a u-value (isocurve is varying in v); otherwise, uv is a v-value (isocurve is varying in u).

sur

The input surface from which a curve is to be extracted.

model

The GDX model for entity creation.

uv

A u- or v-value (see option). This defines which curve is to be extracted.

Output

gdx_cur

The extracted isocurve.

Return

      GDX_NOERR
      Low level error return
      .fi