gluBeginSurface man page on RedHat
[printable version]
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 © 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 03/16/2013 GLUBEGINSURFACE(3G)
[top]
List of man pages available for RedHat
Copyright (c) for man pages and the logo by the respective OS vendor.
For those who want to learn more, the polarhome community provides shell access and support.
[legal]
[privacy]
[GNU]
[policy]
[cookies]
[netiquette]
[sponsors]
[FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
|
Vote for polarhome
|