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-_C_ License Applicability. Except to the extent portions of this file are
-_C_ made subject to an alternative license as permitted in the SGI Free
-_C_ Software License B, Version 1.1 (the "License"), the contents of this
-_C_ file are subject only to the provisions of the License. You may not use
-_C_ this file except in compliance with the License. You may obtain a copy
-_C_ of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-_C_ Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-_C_
-_C_ http://oss.sgi.com/projects/FreeB
-_C_
-_C_ Note that, as provided in the License, the Software is distributed on an
-_C_ "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-_C_ DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-_C_ CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-_C_ PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-_C_
-_C_ Original Code. The Original Code is: OpenGL Sample Implementation,
-_C_ Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-_C_ Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-_C_ Copyright in any portions created by third parties is as indicated
-_C_ elsewhere herein. All Rights Reserved.
-_C_
-_C_ Additional Notice Provisions: The application programming interfaces
-_C_ established by SGI in conjunction with the Original Code are The
-_C_ OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-_C_ April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-_C_ 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-_C_ Window System(R) (Version 1.3), released October 19, 1998. This software
-_C_ was created using the OpenGL(R) version 1.2.1 Sample Implementation
-_C_ published by SGI, but has not been independently verified as being
-_C_ compliant with the OpenGL(R) version 1.2.1 Specification.
-_C_
-_C_ $Date: 2004/03/14 08:29:09 $ $Revision: 1.1.1.4 $
-_C_ The first character in this file must be an '_'!
-_C_ Anything on a line after _C_ is ignored
-_define(_filters,eqn)_C_
-_C_ eqn is automatically replaced with neqn for nroff
-_header(BeginCurve, delimit a NURBS curve definition)
-_names(BeginCurve)
-_names(EndCurve,,noheader)
-.EQ
-delim $$
-.EN
-.SH PARAMETERS
-_phead(_param1)
-Specifies the NURBS object (created with _cmnd(NewNurbsRenderer)).
-.SH DESCRIPTION
-Use _cmnd(BeginCurve) to mark the beginning of a NURBS
-curve definition.
-After
-calling _cmnd(BeginCurve), make one or more calls to
-_cmnd(NurbsCurve) to define the attributes of the curve.
-Exactly one of the calls to _cmnd(NurbsCurve) must have
-a curve type of _const(MAP1_VERTEX_3) or _const(MAP1_VERTEX_4).
-To mark the end of the NURBS curve definition, call _cmnd(EndCurve).
-.P
-GL evaluators are used to render the NURBS curve as a series of line
-segments.
-Evaluator state is preserved during rendering
-with _glcmnd(PushAttrib)(_const(EVAL_BIT)) and
-_glcmnd(PopAttrib)().
-See the _glcmnd(PushAttrib) reference page for details on exactly what state
-these calls preserve.
-.SH EXAMPLE
-The following commands render a textured NURBS curve with normals;
-texture coordinates and normals are also specified as NURBS curves:
-.sp
-.Ex
-gluBeginCurve(nobj);
- gluNurbsCurve(nobj, ..., GL_MAP1_TEXTURE_COORD_2);
- gluNurbsCurve(nobj, ..., GL_MAP1_NORMAL);
- gluNurbsCurve(nobj, ..., GL_MAP1_VERTEX_4);
-gluEndCurve(nobj);
-.Ee
-.SH SEE ALSO
-_cmnd(BeginSurface), _cmnd(BeginTrim), _cmnd(NewNurbsRenderer),
-_cmnd(NurbsCurve),
-_glcmnd(PopAttrib), _glcmnd(PushAttrib)
-