Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   29550 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

GLUTESSBEGINPOLYGON(3G)		 OpenGL Manual	       GLUTESSBEGINPOLYGON(3G)

NAME
       gluTessBeginPolygon - delimit a polygon description

C SPECIFICATION
       void gluTessBeginPolygon(GLUtesselator* tess, GLvoid* data);

PARAMETERS
       tess
	   Specifies the tessellation object (created with gluNewTess()).

       data
	   Specifies a pointer to user polygon data.

DESCRIPTION
       gluTessBeginPolygon and gluTessEndPolygon() delimit the definition of a
       convex, concave or self-intersecting polygon. Within each
       gluTessBeginPolygon/gluTessEndPolygon() pair, there must be one or more
       calls to gluTessBeginContour()/gluTessEndContour(). Within each
       contour, there are zero or more calls to gluTessVertex(). The vertices
       specify a closed contour (the last vertex of each contour is
       automatically linked to the first). See the gluTessVertex(),
       gluTessBeginContour(), and gluTessEndContour() reference pages for more
       details.

       data is a pointer to a user-defined data structure. If the appropriate
       callback(s) are specified (see gluTessCallback()), then this pointer is
       returned to the callback function(s). Thus, it is a convenient way to
       store per-polygon information.

       Once gluTessEndPolygon() is called, the polygon is tessellated, and the
       resulting triangles are described through callbacks. See
       gluTessCallback() for descriptions of the callback functions.

EXAMPLE
       A quadrilateral with a triangular hole in it can be described as
       follows:

	   gluTessBeginPolygon(tobj, NULL);
	      gluTessBeginContour(tobj);
		 gluTessVertex(tobj, v1, v1);
		 gluTessVertex(tobj, v2, v2);
		 gluTessVertex(tobj, v3, v3);
		 gluTessVertex(tobj, v4, v4);
	      gluTessEndContour(tobj);
	      gluTessBeginContour(tobj);
		 gluTessVertex(tobj, v5, v5);
		 gluTessVertex(tobj, v6, v6);
		 gluTessVertex(tobj, v7, v7);
	      gluTessEndContour(tobj);
	   gluTessEndPolygon(tobj);

SEE ALSO
       gluNewTess(), gluTessBeginContour(), gluTessCallback(),
       gluTessEndPolygon(), gluTessNormal(), gluTessProperty(),
       gluTessVertex()

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	       GLUTESSBEGINPOLYGON(3G)

Vote for polarhome