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<HTML><BODY><PRE>     <STRONG>NAME</STRONG>	  <STRONG>gluBeginPolygon,</STRONG> <STRONG>gluEndPolygon</STRONG> - delimit a polygon	  description     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>	  void <STRONG>gluBeginPolygon</STRONG>(	GLUtesselator* <EM>tess</EM> )	  void <STRONG>gluEndPolygon</STRONG>( GLUtesselator* <EM>tess</EM> )     <STRONG>PARAMETERS</STRONG>	  <EM>tess</EM>	Specifies the tessellation object (created with		<STRONG>gluNewTess</STRONG>).     <STRONG>DESCRIPTION</STRONG>	  <STRONG>gluBeginPolygon</STRONG> and <STRONG>gluEndPolygon</STRONG> delimit the	definition of	  a nonconvex polygon.	To define such a polygon, first	call	  <STRONG>gluBeginPolygon</STRONG>.  Then define	the contours of	the polygon by	  calling <STRONG>gluTessVertex</STRONG>	for each vertex	and <STRONG>gluNextContour</STRONG> to	  start	each new contour.  Finally, call <STRONG>gluEndPolygon</STRONG> to	  signal the end of the	definition.  See the <STRONG>gluTessVertex</STRONG> and	  <STRONG>gluNextContour</STRONG> reference pages for more details.	  Once <STRONG>gluEndPolygon</STRONG> is	called,	the polygon is tessellated,	  and the resulting triangles are described through callbacks.	  See <STRONG>gluTessCallback</STRONG> for descriptions of the callback	  functions.     <STRONG>NOTES</STRONG>	  This command is obsolete and is provided for backward	  compatibility	only. Calls to <STRONG>gluBeginPolygon</STRONG> are mapped to	  <STRONG>gluTessBeginPolygon</STRONG> followed by <STRONG>gluTessBeginContour</STRONG>. Calls	  to <STRONG>gluEndPolygon</STRONG> are mapped to <STRONG>gluTessEndContour</STRONG> followed by	  <STRONG>gluTessEndPolygon</STRONG>.     <STRONG>EXAMPLE</STRONG>	  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);     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>	  <STRONG>gluNewTess</STRONG>, <STRONG>gluNextContour</STRONG>, <STRONG>gluTessCallback</STRONG>, <STRONG>gluTessVertex</STRONG>,	  <STRONG>gluTessBeginPolygon</STRONG>, <STRONG>gluTessBeginContour</STRONG></PRE></BODY></HTML>

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