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// $Id$
//
//
// ------------------------------------------------------------
//      GEANT 4 class header file
//
//
// Class Description
//  This class is a Range to Energy Converter for gamma.
//
// ------------------------------------------------------------
//   First Implementation          5 Oct. 2002  H.Kurahige
// ------------------------------------------------------------

#ifndef G4RToEConvForGamma_h
#define G4RToEConvForGamma_h 1

#include "globals.hh"
#include "G4ios.hh"
#include <vector>

#include "G4VRangeToEnergyConverter.hh"


class G4RToEConvForGamma : public G4VRangeToEnergyConverter
{
  public: // with description
  //  constructor
  G4RToEConvForGamma();

  public:
  //  destructor
  virtual ~G4RToEConvForGamma();

  public: // with description 
  // calculate energy cut from given range cut for the material
  // virtual G4double convert(G4double rangeCut, const G4Material* material); 

  protected:
    virtual G4double ComputeLoss( G4double AtomicNumber,
                                  G4double KineticEnergy
				  ) const;
  
  //-------------- Range Table ------------------------------------------
    virtual void BuildRangeVector( const G4Material* aMaterial,
				   G4RangeVector* rangeVector);

    typedef G4LossTable G4CrossSectionTable;
    void BuildAbsorptionLengthVector( const G4Material* aMaterial,
				      G4RangeVector* rangeVector);
 
    G4double ComputeCrossSection( G4double AtomicNumber,
				  G4double KineticEnergy
				  ) const;


};

inline 
 G4double G4RToEConvForGamma::ComputeLoss(G4double AtomicNumber,
					  G4double KineticEnergy) const
{
  return ComputeCrossSection(AtomicNumber,KineticEnergy);
}

inline 
 void G4RToEConvForGamma::BuildRangeVector(
                                const G4Material* aMaterial,
                                G4RangeVector* rangeVector)
{
  BuildAbsorptionLengthVector(aMaterial, rangeVector);
}



#endif