gluTessEndPolygon man page on DigitalUNIX

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gluTessEndPolygon()					   gluTessEndPolygon()

       gluTessEndPolygon - delimit a polygon description

       void gluTessEndPolygon(
	       GLUtesselator* tess );

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

       gluTessBeginPolygon() and gluTessEndPolygon() delimit the definition of
       a convex, concave or self-intersecting polygon. Within each  gluTessBe‐
       ginPolygon()/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.

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

       A quadrilateral with a triangular hole in  it  can  be  described  like
       this: gluTessBeginPolygon(tobj, NULL);
	   gluTessVertex(tobj, v1, v1);
	   gluTessVertex(tobj, v2, v2);
	   gluTessVertex(tobj, v3, v3);
	   gluTessVertex(tobj, v4, v4);
	   gluTessVertex(tobj, v5, v5);
	   gluTessVertex(tobj, v6, v6);
	   gluTessVertex(tobj, v7, v7);

       In  the above example the pointers, v1 through v7, should point to dif‐
       ferent addresses, since the values stored at these addresses  will  not
       be read by the tesselator until gluTessEndPolygon() is called.

       gluNewTess(3),  gluTessBeginContour(3),	gluTessVertex(3), gluTessCall‐
       back(3), gluTessProperty(3), gluTessNormal(3), gluTessBeginPolygon(3)


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