/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file arToolKit.h
 * @author jyelon
 * @date 2007-11-01
 */

#ifndef ARTOOLKIT_H
#define ARTOOLKIT_H

#include "pandabase.h"

#ifdef HAVE_ARTOOLKIT

#include "nodePath.h"
#include "texture.h"

/**
 * ARToolKit is a software library for building Augmented Reality (AR)
 * applications.  These are applications that involve the overlay of virtual
 * imagery on the real world.  It was developed by Dr.  Hirokazu Kato.  Its
 * ongoing development is being supported by the Human Interface Technology
 * Laboratory (HIT Lab) at the University of Washington, HIT Lab NZ at the
 * University of Canterbury, New Zealand, and ARToolworks, Inc, Seattle.  It
 * is available under a GPL license.  It is also possible to negotiate other
 * licenses with the copyright holders.
 *
 * This class is a wrapper around the ARToolKit library.
 */
class EXPCL_VISION ARToolKit {

PUBLISHED:
  static ARToolKit *make(NodePath camera, const Filename &paramfile, double markersize);
  ~ARToolKit();

  INLINE void set_threshold(double n);
  void attach_pattern(const Filename &pattern, NodePath path);
  void detach_patterns();
  void analyze(Texture *tex, bool do_flip_texture = true);

private:
  static int get_pattern(const Filename &pattern);
  ARToolKit();
  void cleanup();

  typedef pmap<Filename, int> PatternTable;
  static PatternTable _pattern_table;

  typedef pmap<int, NodePath> Controls;
  Controls _controls;

  NodePath _camera;
  void *_camera_param;
  double _threshold;
  double _marker_size;
  double _prev_conv[3][4];
  bool _have_prev_conv;
};

#include "arToolKit.I"

#endif // HAVE_ARTOOLKIT
#endif // ARTOOLKIT_H