1991-2006 Silicon Graphics, Inc.
gluNurbsCallbackData 3G
gluNurbsCallbackData set a user data pointer

## C Specification

void `gluNurbsCallbackData` GLUnurbs* nurb GLvoid* userData

## Parameters

nurb

  Specifies the NURBS object (created with gluNewNurbsRenderer).

userData

  Specifies a pointer to the user's data.

## Description

`gluNurbsCallbackData` is used to pass a pointer to the application's data to NURBS tessellator. A copy of this pointer will be passed by the tessellator in the NURBS callback functions (set by gluNurbsCallback).

## Notes

`gluNurbsCallbackData` is available only if the GLU version is 1.3 or greater.

## See Also

gluNewNurbsRenderer, gluNurbsCallback

## Copyright

Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.