//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
// The code was written by :
//	*Louis Archambault louis.archambault@phy.ulaval.ca,
//      *Luc Beaulieu beaulieu@phy.ulaval.ca
//      +Vincent Hubert-Tremblay at tigre.2@sympatico.ca
//
//
// *Centre Hospitalier Universitaire de Quebec (CHUQ),
// Hotel-Dieu de Quebec, departement de Radio-oncologie
// 11 cote du palais. Quebec, QC, Canada, G1R 2J6
// tel (418) 525-4444 #6720
// fax (418) 691 5268
//
// + Université Laval, Québec (QC) Canada
//*******************************************************//
#ifndef DICOMOCTREENODE_H
#define DICOMOCTREENODE_H
#include "globals.hh"

enum OctreeNodeType { MIDDLE_NODE, TERMINAL_NODE };

//  OctreeNode represents a single node in the Octree.
class DicomOctreeNode
{
public:

  DicomOctreeNode();
  ~DicomOctreeNode();

  DicomOctreeNode( DicomOctreeNode* pParent );
  
  G4double Density(){return mDensity;}

  virtual DicomOctreeNode*& operator []( G4int index ) = 0;

  virtual OctreeNodeType Type() = 0;

  const DicomOctreeNode* Parent(){ return mParent; }

  virtual G4int FindChild( const DicomOctreeNode* pNode ) = 0;

  static G4int InstanceCounter() { return mInstanceCounter; }

  virtual G4int MemSize() = 0;

private:
  static G4int mInstanceCounter;
  DicomOctreeNode* mParent;
  G4double  mDensity;
};
#endif