# Synopsis

PDX_MSGT gdx_ConvertPlaneToNurbSurf(long option, MDA_PTR db_ptr, int model, void *gdx_nurb_surf)

# Purpose

Convert a GDX bounded plane surface to a GDX NURB Surface

# Description

Converts a GDX bounded plane surface entity to a GDX NURB Surface entity.

The bound values for the plane define the four(4) corner points of the NURBS plane surface.

If a conversion error occurs any data created during the conversion is deleted and no GDX NURB Surface is created.

The GDX bounded plane must be valid GDX definitions and both the U and V bound values must be defined.

The conversion is exact to the precision of the input data and to machine precision.

# Input

## option

### GDX_COMMIT

Commit the GDX NURB Surface to the database

## db_ptr

The valid GDX plnae entity database pointer

## model

The model to create the GDX NURB Surface in

# Output

## gdx_nurb_surf

The GDX NURB Surface entity database pointer or structure pointer

# Return

          GDX_NOERR
          GDX_INVALIDMODEL
          GDX_INVALIDENTITYTYPE
          Low level error return
          .fi