glubeginpolygon(3g) [xfree86 man page]

GLUBEGINPOLYGON(3G)													       GLUBEGINPOLYGON(3G)

NAME

       gluBeginPolygon, gluEndPolygon - delimit a polygon description

C SPECIFICATION

       void gluBeginPolygon( GLUtesselator* tess )

       void gluEndPolygon( GLUtesselator* tess )

PARAMETERS

       tess  Specifies the tessellation object (created with gluNewTess).

DESCRIPTION

       gluBeginPolygon	and  gluEndPolygon  delimit  the definition of a nonconvex polygon.  To define such a polygon, first call gluBeginPolygon.
       Then define the contours of the polygon by calling gluTessVertex for each vertex and gluNextContour to start each  new  contour.   Finally,
       call gluEndPolygon to signal the end of the definition.	See the gluTessVertex and gluNextContour reference pages for more details.

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

NOTES

       This command is obsolete and is provided for backward compatibility only. Calls to gluBeginPolygon are mapped to  gluTessBeginPolygon  fol-
       lowed by gluTessBeginContour. Calls to gluEndPolygon are mapped to gluTessEndContour followed by gluTessEndPolygon.

EXAMPLE

       A quadrilateral with a triangular hole in it can be described like this:

       gluBeginPolygon(tobj);
	  gluTessVertex(tobj, v1, v1);
	  gluTessVertex(tobj, v2, v2);
	  gluTessVertex(tobj, v3, v3);
	  gluTessVertex(tobj, v4, v4); gluNextContour(tobj, GLU_INTERIOR);
	  gluTessVertex(tobj, v5, v5);
	  gluTessVertex(tobj, v6, v6);
	  gluTessVertex(tobj, v7, v7); gluEndPolygon(tobj);

SEE ALSO

       gluNewTess(3G), gluNextContour(3G), gluTessCallback(3G), gluTessVertex(3G), gluTessBeginPolygon(3G), gluTessBeginContour(3G)

															       GLUBEGINPOLYGON(3G)

GLUBEGINPOLYGON(3G)						   OpenGL Manual					       GLUBEGINPOLYGON(3G)

NAME

       gluBeginPolygon - delimit a polygon description

C SPECIFICATION

       void gluBeginPolygon(GLUtesselator* tess);

C SPECIFICATION

       void gluEndPolygon(GLUtesselator* tess);

PARAMETERS

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

DESCRIPTION

       gluBeginPolygon and gluEndPolygon() delimit the definition of a nonconvex polygon. To define such a polygon, first call gluBeginPolygon.
       Then define the contours of the polygon by calling gluTessVertex() for each vertex and gluNextContour() to start each new contour. Finally,
       call gluEndPolygon() to signal the end of the definition. See the gluTessVertex() and gluNextContour() reference pages for more details.

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

NOTES

       This command is obsolete and is provided for backward compatibility only. Calls to gluBeginPolygon are mapped to gluTessBeginPolygon()
       followed by gluTessBeginContour(). Calls to gluEndPolygon() are mapped to gluTessEndContour() followed by gluTessEndPolygon().

EXAMPLE

       A quadrilateral with a triangular hole in it can be described like this:

	   gluBeginPolygon(tobj);
	      gluTessVertex(tobj, v1, v1);
	      gluTessVertex(tobj, v2, v2);
	      gluTessVertex(tobj, v3, v3);
	      gluTessVertex(tobj, v4, v4);
	   gluNextContour(tobj, GLU_INTERIOR);
	      gluTessVertex(tobj, v5, v5);
	      gluTessVertex(tobj, v6, v6);
	      gluTessVertex(tobj, v7, v7);
	   gluEndPolygon(tobj);

SEE ALSO

       gluNewTess(), gluNextContour(), gluTessBeginContour(), gluTessBeginPolygon(), gluTessCallback(), gluTessVertex()

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						       GLUBEGINPOLYGON(3G)