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panda/src/egg2pg/eggBinner.h

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// Filename: eggBinner.h
// Created by:  drose (17Feb00)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////

#ifndef EGGBINNER_H
#define EGGBINNER_H

#include "pandabase.h"

#include "eggBinMaker.h"

///////////////////////////////////////////////////////////////////
//       Class : EggBinner
// Description : A special binner used only within this package to
//               pre-process the egg tree for the loader and group
//               things together as appropriate.
//
//               Presently, it only groups related LOD children
//               together under a single LOD node.
////////////////////////////////////////////////////////////////////
class EggBinner : public EggBinMaker {
public:

  // The BinNumber serves to identify why a particular EggBin was
  // created.
  enum BinNumber {
    BN_none = 0,
    BN_lod,
  };

  virtual int
  get_bin_number(const EggNode *node);

  virtual bool
  sorts_less(int bin_number, const EggNode *a, const EggNode *b);

  virtual bool
  collapse_group(const EggGroup *group, int bin_number);
};


#endif

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