Synopsis

PDX_MSGT gdx_EvalRuledSurfPnt(long option, T_GDX_RULED_SURF *gdx_ruled, double uval, double vval, MTH_3DPNT point)

Purpose

Evaluate a point on a GDX ruled surface

Description

At a given pair of parameter values, evaluates a point on a GDX ruled surface entity.

Input

option

GDX_UNNORM

Unnormalize the parameter values

GDX_FROMLEFT

Evaluate the point from the left

gdx_ruled

The GDX ruled surface entity structure pointer

uval

The surface U parameter value to evaluate

vval

The surface V parameter value to evaluate

Output

point

The XYZ 3D evaluated point location

Return

      GDX_NOERR
      GDX_PARMOUTOFRANGE
      Low level error return
      .fi