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// $Id: G4VEmFluctuationModel.hh,v 1.7 2003/10/16 13:06:40 vnivanch Exp $
// GEANT4 tag $Name: geant4-06-00-patch-01 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4VEmFluctuationModel
//
// Author:        Vladimir Ivanchenko
//
// Creation date: 03.01.2002
//
// Modifications:
//
// 28-12-02 add method Dispersion (V.Ivanchenko)
// 07-02-03 change signature (V.Ivanchenko)
// 13-02-03 Add name (V.Ivanchenko)
// 16-10-03 Changed interface to Initialisation (V.Ivanchenko)
//
//
// Class Description: 
//
// Abstract class for interface to simualtion of energy loss fluctuations

// -------------------------------------------------------------------
//

#ifndef G4VEmFluctuationModel_h
#define G4VEmFluctuationModel_h 1


#include "globals.hh"

class G4ParticleDefinition;
class G4DynamicParticle;
class G4Material;

class G4VEmFluctuationModel 
{

public:

  G4VEmFluctuationModel(const G4String& nam): name(nam) {};

  virtual ~G4VEmFluctuationModel() {};

  virtual G4double SampleFluctuations(const G4Material*,
                                  const G4DynamicParticle*,
				        G4double& tmax,
                                        G4double& length,
                                        G4double& meanLoss) = 0;

  virtual G4double Dispersion(const G4Material*,
                              const G4DynamicParticle*,
				        G4double& tmax,
                                        G4double& length) = 0;

  virtual void InitialiseMe(const G4ParticleDefinition*) = 0;

  G4String GetName() const {return name;};

protected:

private:

  // hide assignment operator
  G4VEmFluctuationModel & operator=(const  G4VEmFluctuationModel &right);
  G4VEmFluctuationModel(const  G4VEmFluctuationModel&);

  const G4String   name;
};

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#endif