gluEndCurve

GLUBEGINCURVE(3G)					    GLUBEGINCURVE(3G)



NAME
       gluBeginCurve, gluEndCurve - delimit a NURBS curve definition


C SPECIFICATION
       void gluBeginCurve( GLUnurbs* nurb )

       void gluEndCurve( GLUnurbs* nurb )


PARAMETERS
       nurb  Specifies the NURBS object (created with gluNewNurbsRenderer).

DESCRIPTION
       Use  gluBeginCurve  to mark the beginning of a NURBS curve definition.
       After calling gluBeginCurve, make one or more calls  to	gluNurbsCurve
       to  define  the	attributes of the curve.  Exactly one of the calls to
       gluNurbsCurve  must  have  a  curve  type   of	GL_MAP1_VERTEX_3   or
       GL_MAP1_VERTEX_4.  To mark the end of the NURBS curve definition, call
       gluEndCurve.

       GL evaluators are used to render the NURBS curve as a series  of	 line
       segments.    Evaluator	state  is  preserved  during  rendering	 with
       glPushAttrib(GL_EVAL_BIT) and  glPopAttrib().   See  the	 glPushAttrib
       reference page for details on exactly what state these calls preserve.

EXAMPLE
       The following commands render a textured	 NURBS	curve  with  normals;
       texture coordinates and normals are also specified as NURBS curves:

       gluBeginCurve(nobj);
	  gluNurbsCurve(nobj, ..., GL_MAP1_TEXTURE_COORD_2);
	  gluNurbsCurve(nobj, ..., GL_MAP1_NORMAL);
	  gluNurbsCurve(nobj, ..., GL_MAP1_VERTEX_4); gluEndCurve(nobj);

SEE ALSO
       gluBeginSurface(3G),	gluBeginTrim(3G),    gluNewNurbsRenderer(3G),
       gluNurbsCurve(3G), glPopAttrib(3G), glPushAttrib(3G)




							    GLUBEGINCURVE(3G)