Digital Equipment Corporation OpenGL man pages

gluTessEndPolygon.3gl (GLU version 1.2 and later)


  gluTessEndPolygon - delimit a	polygon	description

C Specification

  void gluTessEndPolygon( GLUtesselator	*tess )


  tess	Specifies the tessellation object (created with	gluNewTess).


  gluTessBeginPolygon and gluTessEndPolygon delimit the	definition of a
  nonconvex 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.

  Once gluTessEndPolygon is called, the	polygon	is tessellated,	and the
  resulting triangles are described through callbacks.	See gluTessCallback
  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);

See Also

  gluNewTess, gluTessBeginContour, gluTessVertex, gluTessCallback,
  gluTessProperty, gluTessNormal, gluTessBeginPolygon

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Last Edited: Fri Dec 6 11:18:03 EST 1996 by AFV
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