Anti-Grain Geometry (AGG) - Version 2.5 A high quality rendering engine for C++ Copyright (C) 2002-2006 Maxim Shemanarev Contact: email@example.com firstname.lastname@example.org http://antigrain.com AGG is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. AGG is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with AGG; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Anti-Grain Geometry - Version 2.4 Copyright (C) 2002-2004 Maxim Shemanarev (McSeem) Permission to copy, use, modify, sell and distribute this software is granted provided this copyright notice appears in all copies. This software is provided "as is" without express or implied warranty, and with no claim as to its suitability for any purpose.
Anti-Grain Geometry - Version 2.4 Copyright (C) 2002-2005 Maxim Shemanarev (McSeem) Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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http://www.cs.man.ac.uk/aig/staff/alan/software/ Author: Alan Murta (email: email@example.com) Version: 2.31 Date: 4th June 1999 Copyright: (C) 1997-1999, Advanced Interfaces Group, University of Manchester. This software is free for non-commercial use. It may be copied, modified, and redistributed provided that this copyright notice is preserved on all copies. The intellectual property rights of the algorithms used reside with the University of Manchester Advanced Interfaces Group. You may not use this software, in whole or in part, in support of any commercial product without the express consent of the author. There is no warranty or other guarantee of fitness of this software for any purpose. It is provided solely "as is".
However GPC is not an obligatory part of AGG and can be easily removed.
You just don't copy (or remove)
GPC is a General Polygon Clipper that performs boolean operations
on polygons (poly-polygons to be exact). In AGG you can get the same
visual result using Scanline Boolean Algebra. It operates with scanline
shapes and in average works 5-10 times faster than GPC. See:
You need GPC if you really really want to have vector data in the ouput. For screen graphics of any kind Scanline Boolen Algebra is quite a good replacement.