1GLUTESSENDPOLYGON(3G)            OpenGL Manual           GLUTESSENDPOLYGON(3G)
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NAME

6       gluTessEndPolygon - delimit a polygon description
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C SPECIFICATION

9       void gluTessEndPolygon(GLUtesselator* tess);
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PARAMETERS

12       tess
13           Specifies the tessellation object (created with gluNewTess()).
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DESCRIPTION

16       gluTessBeginPolygon() and gluTessEndPolygon delimit the definition of a
17       convex, concave, or self-intersecting polygon. Within each
18       gluTessBeginPolygon()/gluTessEndPolygon pair, there must be one or more
19       calls to gluTessBeginContour()/gluTessEndContour(). Within each
20       contour, there are zero or more calls to gluTessVertex(). The vertices
21       specify a closed contour (the last vertex of each contour is
22       automatically linked to the first). See the gluTessVertex(),
23       gluTessBeginContour(), and gluTessEndContour() reference pages for more
24       details.
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26       Once gluTessEndPolygon is called, the polygon is tessellated, and the
27       resulting triangles are described through callbacks. See
28       gluTessCallback() for descriptions of the callback functions.
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EXAMPLE

31       A quadrilateral with a triangular hole in it can be described like
32       this:
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34           gluTessBeginPolygon(tobj, NULL);
35              gluTessBeginContour(tobj);
36                 gluTessVertex(tobj, v1, v1);
37                 gluTessVertex(tobj, v2, v2);
38                 gluTessVertex(tobj, v3, v3);
39                 gluTessVertex(tobj, v4, v4);
40              gluTessEndContour(tobj);
41              gluTessBeginContour(tobj);
42                 gluTessVertex(tobj, v5, v5);
43                 gluTessVertex(tobj, v6, v6);
44                 gluTessVertex(tobj, v7, v7);
45              gluTessEndContour(tobj);
46           gluTessEndPolygon(tobj);
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49       In the above example the pointers, v1 through v7, should point to
50       different addresses, since the values stored at these addresses will
51       not be read by the tesselator until gluTessEndPolygon is called.
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SEE ALSO

54       gluNewTess(), gluTessBeginContour(), gluTessBeginPolygon(),
55       gluTessCallback(), gluTessNormal(), gluTessProperty(), gluTessVertex()
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58       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
59       under the SGI Free Software B License. For details, see
60       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

63       opengl.org
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67opengl.org                        06/10/2014             GLUTESSENDPOLYGON(3G)
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