/**
 * 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 eggCharacterDb.h
 * @author drose
 * @date 2006-10-05
 */

#ifndef EGGCHARACTERDB_H
#define EGGCHARACTERDB_H

#include "pandatoolbase.h"
#include "pmap.h"

/*
#ifdef HAVE_BDB

// Apparently, we have to define this to make db_cxx files include the modern
// header files.
#define HAVE_CXX_STDHEADERS 1
#include <db_cxx.h>

#endif  // HAVE_BDB
*/

class EggJointPointer;
class LMatrix4d;

/**
 * This class is used during joint optimization or restructuring to store the
 * table of interim joint computations.
 *
 * That is to say, this class provides an temporary data store for three
 * tables of matrices per each EggJointPointer per frame.
 */
class EggCharacterDb {
public:
  EggCharacterDb();
  ~EggCharacterDb();

  enum TableType {
    TT_rebuild_frame,
    TT_net_frame,
    TT_net_frame_inv,
  };

  bool get_matrix(const EggJointPointer *joint, TableType type,
                  int frame, LMatrix4d &mat) const;
  void set_matrix(const EggJointPointer *joint, TableType type,
                  int frame, const LMatrix4d &mat);

private:
  class Key {
  public:
    INLINE Key(const EggJointPointer *joint,
               TableType table_type,
               int frame);
    INLINE bool operator < (const Key &other) const;

  private:
    const EggJointPointer *_joint;
    TableType _table_type;
    int _frame;
  };

  /*
#ifdef HAVE_BDB
  Db *_db;
  Filename _db_filename;
#endif  // HAVE_BDB
  */

  typedef pmap<Key, LMatrix4d> Table;
  Table _table;
};

#include "eggCharacterDb.I"

#endif