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/* ========================================================================
* PROJECT: ARToolKitPlus
* ========================================================================
* This work is based on the original ARToolKit developed by
* Hirokazu Kato
* Mark Billinghurst
* HITLab, University of Washington, Seattle
* http://www.hitl.washington.edu/artoolkit/
*
* Copyright of the derived and new portions of this work
* (C) 2006 Graz University of Technology
*
* This framework 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.
*
* This framework 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 this framework; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For further information please contact
* Dieter Schmalstieg
* <schmalstieg@icg.tu-graz.ac.at>
* Graz University of Technology,
* Institut for Computer Graphics and Vision,
* Inffeldgasse 16a, 8010 Graz, Austria.
* ========================================================================
** @author Daniel Wagner
*
* $Id: arBitFieldPattern.h 162 2006-04-19 21:28:10Z grabner $
* @file
* ======================================================================== */
#ifndef __ARBITFIELDPATTERN_HEADERFILE__
#define __ARBITFIELDPATTERN_HEADERFILE__
namespace ARToolKitPlus {
enum {
// size of the marker images
idPattWidth = 6,
idPattHeight = 6,
// number of bits we can use for marker id
idBits = 9,
idMask = (1<<idBits) - 1,
idMax = (1<<idBits) - 1,
pattBits = 4*idBits
};
// we only use __int64 under windows.
// have to use unsigned long long othersie...
#if defined(_MSC_VER) || defined(_WIN32_WCE)
typedef __int64 IDPATTERN;
const IDPATTERN bchMask = 0x8f80b8750;
#else
typedef unsigned long long IDPATTERN;
const IDPATTERN bchMask = 0x8f80b8750ll;
#endif
const IDPATTERN xorMask0 = 0x0027;
const IDPATTERN xorMask1 = 0x014e;
const IDPATTERN xorMask2 = 0x0109;
const IDPATTERN xorMask3 = 0x00db;
const int posMask0 = 0;
const int posMask1 = idBits;
const int posMask2 = 2*idBits;
const int posMask3 = 3*idBits;
// full mask that is used to xor raw pattern image
const IDPATTERN fullMask = (xorMask0<<posMask0) | (xorMask1<<posMask1) | (xorMask2<<posMask2) | (xorMask3<<posMask3);
const unsigned int bchBits = 12;
const unsigned int idMaxBCH = (1<<bchBits) - 1;
// array with indices for 90° CW rotated grid
const int rotate90[] = {
30, 24, 18, 12, 6, 0,
31, 25, 19, 13, 7, 1,
32, 26, 20, 14, 8, 2,
33, 27, 21, 15, 9, 3,
34, 28, 22, 16, 10, 4,
35, 29, 23, 17, 11, 5
};
// some internal methods. primarily needed for
// marker printing, etc.
//
static void generatePatternSimple(int nID, IDPATTERN& nPattern);
static void generatePatternBCH(int nID, IDPATTERN& nPattern);
// static void setBit(IDPATTERN& pat, int which);
static bool isBitSet(IDPATTERN pat, int which);
} // namespace ARToolKitPlus
#endif //__ARBITFIELDPATTERN_HEADERFILE__
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