GLUBEGINPOLYGON(3G)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.
NOTES
This command is obsolete and is provided for backward compatibility only. Calls to gluBeginPolygon are mapped to gluTessBeginPolygon fol-
lowed 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);
SEE ALSO gluNewTess(3G), gluNextContour(3G), gluTessCallback(3G), gluTessVertex(3G), gluTessBeginPolygon(3G), gluTessBeginContour(3G)GLUBEGINPOLYGON(3G)
Check Out this Related Man Page
GLUBEGINPOLYGON(3G) OpenGL Manual GLUBEGINPOLYGON(3G)NAME
gluBeginPolygon - delimit a polygon description
C SPECIFICATION
void gluBeginPolygon(GLUtesselator* tess);
C SPECIFICATION
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.
NOTES
This command is obsolete and is provided for backward 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);
SEE ALSO
gluNewTess(), gluNextContour(), gluTessBeginContour(), gluTessBeginPolygon(), gluTessCallback(), gluTessVertex()
COPYRIGHT
Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
AUTHORS
opengl.org
opengl.org 06/10/2014 GLUBEGINPOLYGON(3G)
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