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glubeginsurface(3g) [centos man page]

GLUBEGINSURFACE(3G)						   OpenGL Manual					       GLUBEGINSURFACE(3G)

NAME

       gluBeginSurface - delimit a NURBS surface definition

C SPECIFICATION

       void gluBeginSurface(GLUnurbs* nurb);

C SPECIFICATION

       void gluEndSurface(GLUnurbs* nurb);

PARAMETERS

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

DESCRIPTION

       Use gluBeginSurface to mark the beginning of a NURBS surface definition. After calling gluBeginSurface, make one or more calls to
       gluNurbsSurface() to define the attributes of the surface. Exactly one of these calls to gluNurbsSurface() must have a surface type of
       GLU_MAP2_VERTEX_3 or GLU_MAP2_VERTEX_4. To mark the end of the NURBS surface definition, call gluEndSurface().

       Trimming of NURBS surfaces is supported with gluBeginTrim(), gluPwlCurve(), gluNurbsCurve(), and gluEndTrim(). See the gluBeginTrim()
       reference page for details.

       GL evaluators are used to render the NURBS surface as a set of polygons. Evaluator state is preserved during rendering with
       glPushAttrib()(GLU_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 surface with normals; the texture coordinates and normals are also described as NURBS
       surfaces:

	   gluBeginSurface(nobj);
	      gluNurbsSurface(nobj, ..., GL_MAP2_TEXTURE_COORD_2);
	      gluNurbsSurface(nobj, ..., GL_MAP2_NORMAL);
	      gluNurbsSurface(nobj, ..., GL_MAP2_VERTEX_4);
	   gluEndSurface(nobj);

SEE ALSO

       gluBeginCurve(), gluBeginTrim(), gluNewNurbsRenderer(), gluNurbsCurve(), gluNurbsSurface(), gluPwlCurve(), glPushAttrib()

COPYRIGHT

       Copyright (C) 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/.

AUTHORS

       opengl.org

opengl.org							    06/10/2014						       GLUBEGINSURFACE(3G)

Check Out this Related Man Page

GLUBEGINSURFACE(3G)													       GLUBEGINSURFACE(3G)

NAME

       gluBeginSurface, gluEndSurface - delimit a NURBS surface definition

C SPECIFICATION

       void gluBeginSurface( GLUnurbs* nurb )

       void gluEndSurface( GLUnurbs* nurb )

PARAMETERS

       nurb  Specifies the NURBS object (created with gluNewNurbsRenderer).

DESCRIPTION

       Use  gluBeginSurface  to  mark  the  beginning  of  a  NURBS  surface  definition. After calling gluBeginSurface, make one or more calls to
       gluNurbsSurface to define the attributes of the surface.  Exactly one of these calls  to  gluNurbsSurface  must	have  a  surface  type	of
       GL_MAP2_VERTEX_3 or GL_MAP2_VERTEX_4.  To mark the end of the NURBS surface definition, call gluEndSurface.

       Trimming  of NURBS surfaces is supported with gluBeginTrim, gluPwlCurve, gluNurbsCurve, and gluEndTrim. See the gluBeginTrim reference page
       for details.

       GL evaluators are used to render the NURBS surface as a set of polygons.  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 surface with normals; the texture coordinates and normals are also described as NURBS sur-
       faces:

       gluBeginSurface(nobj);
	  gluNurbsSurface(nobj, ..., GL_MAP2_TEXTURE_COORD_2);
	  gluNurbsSurface(nobj, ..., GL_MAP2_NORMAL);
	  gluNurbsSurface(nobj, ..., GL_MAP2_VERTEX_4); gluEndSurface(nobj);

SEE ALSO

       gluBeginCurve(3G), gluBeginTrim(3G), gluNewNurbsRenderer(3G), gluNurbsCurve(3G), gluNurbsSurface(3G), gluPwlCurve(3G)

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