# Synopsis

(macro) PDX_MSGT gdx_AddApproxPointSurfaceParm(long option, MTH_3DPNT surf_point, double u_parm_point, double v_parm_point, double u_start_parm, double v_start_parm, double u_end_parm, double v_end_parm)

# Purpose

Add a the surface point and associated parameter values to the approximation points list

# Description

The surface 3D point is added to the GDX linear approximation workspace and if the option has been specified to generate parameter points, the normalized(0.0 - 1.0) parameter values is calcuated and added to the parameter points list.

# Input

## option

Not used

## surf_point

The 3D surface point

## u_parm_point

The U parameter value of the surface point

## v_parm_point

The V parameter value of the surface point

## u_start_parm

The surface U start parameter value

## v_start_parm

The surface V start parameter value

## u_end_parm

The surface U end parameter value

## v_end_parm

The surface V end parameter value

# Return

          GDX_NOERR
          Low level error return
          .fi