gluBeginPolygon(3G)	       OpenGL Reference		   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.

     This command is obsolete and is provided for backwards compatibility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);









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gluBeginPolygon(3G)	       OpenGL Reference		   gluBeginPolygon(3G)



SEE ALSO
     gluNewTess, gluNextContour, gluTessCallback, gluTessVertex,
     gluTessBeginPolygon, gluTessBeginContour




















































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