//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in:                      *
// *   http://cern.ch/geant4/license                                  *
// *                                                                  *
// * 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.                                                             *
// *                                                                  *
// * This  code  implementation is the  intellectual property  of the *
// * GEANT4 collaboration.                                            *
// * By copying,  distributing  or modifying the Program (or any work *
// * based  on  the Program)  you indicate  your  acceptance of  this *
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// ********************************************************************
//
// Code developed by:
//  S.Larsson and J. Generowicz.
//
//    *************************************
//    *                                   *
//    *    PurgMagTabulatedField3D.hh     *
//    *                                   *
//    *************************************
//
// $Id: PurgMagTabulatedField3D.hh,v 1.2 2004/06/18 09:17:52 gunter Exp $
// GEANT4 tag $Name: geant4-08-00 $
//

#include "globals.hh"
#include "G4MagneticField.hh"
#include "G4ios.hh"

#include <fstream>
#include <vector>
#include <cmath>

using namespace std;

class PurgMagTabulatedField3D
#ifndef STANDALONE
 : public G4MagneticField
#endif
{
  
  // Storage space for the table
  vector< vector< vector< double > > > xField;
  vector< vector< vector< double > > > yField;
  vector< vector< vector< double > > > zField;
  // The dimensions of the table
  int nx,ny,nz; 
  // The physical limits of the defined region
  double minx, maxx, miny, maxy, minz, maxz;
  // The physical extent of the defined region
  double dx, dy, dz;
  double fZoffset;
  bool invertX, invertY, invertZ;

public:
  PurgMagTabulatedField3D(const char* filename, double zOffset );
  void  GetFieldValue( const  double Point[4],
		       double *Bfield          ) const;
};