Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

CentOS 7.0 - man page for glutessendpolygon (centos section 3g)

GLUTESSENDPOLYGON(3G)				    OpenGL Manual				GLUTESSENDPOLYGON(3G)

NAME
gluTessEndPolygon - delimit a polygon description
C SPECIFICATION
void gluTessEndPolygon(GLUtesselator* tess);
PARAMETERS
tess Specifies the tessellation object (created with gluNewTess()).
DESCRIPTION
gluTessBeginPolygon() and gluTessEndPolygon delimit the definition of a convex, concave, or self-intersecting 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.
EXAMPLE
A quadrilateral with a triangular hole in it can be described like this: gluTessBeginPolygon(tobj, NULL); gluTessBeginContour(tobj); gluTessVertex(tobj, v1, v1); gluTessVertex(tobj, v2, v2); gluTessVertex(tobj, v3, v3); gluTessVertex(tobj, v4, v4); gluTessEndContour(tobj); gluTessBeginContour(tobj); gluTessVertex(tobj, v5, v5); gluTessVertex(tobj, v6, v6); gluTessVertex(tobj, v7, v7); gluTessEndContour(tobj); gluTessEndPolygon(tobj); In the above example the pointers, v1 through v7, should point to different addresses, since the values stored at these addresses will not be read by the tesselator until gluTessEndPolygon is called.
SEE ALSO
gluNewTess(), gluTessBeginContour(), gluTessBeginPolygon(), gluTessCallback(), gluTessNormal(), gluTessProperty(), 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 GLUTESSENDPOLYGON(3G)


All times are GMT -4. The time now is 12:54 PM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
UNIX.COM Login
Username:
Password:  
Show Password