# Synopsis

PDX_MSGT gdx_ConvertPolylineToNurbCurve(long option, MDA_PTR gdx_poly_db_ptr, int model, void *gdx_nurb_curve)

# Purpose

Convert a GDX polyline to a GDX NURB Curve

# Description

Converts a GDX polyline entity to a GDX NURB Curve entity.

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

The GDX polyline entity must be a valid GDX definition.

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

# Input

## option

### GDX_COMMIT

Commit the GDX NURB Curve to the database

## gdx_poly_db_ptr

The valid GDX polyline entity database pointer

## model

The model to create the GDX NURB Curve in

# Output

## gdx_nurb_curve

The GDX NURB Curve entity database pointer or the GDX NURB curve entity structure

# Return

          GDX_NOERR
          GDX_INVALIDENTITYTYPE
          GDX_INVALIDMODEL
          GDX_NOMEMORY
          Low level error return
          .fi