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// $Id: G4EmMultiModel.hh,v 1.6 2007/05/22 17:31:57 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-02 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4EmMultiModel
//
// Author:        Vladimir Ivanchenko
//
// Creation date: 03.05.2004
//
// Modifications:
// 15-04-05 optimize internal interface (V.Ivanchenko)
//
// Class Description:
//
// Energy loss model using several G4VEmModels

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

#ifndef G4EmMultiModel_h
#define G4EmMultiModel_h 1

#include "globals.hh"
#include "G4VEmModel.hh"
#include <vector>

class G4Region;
class G4PhysicsTable;
class G4DynamicParticle;

class G4EmMultiModel :  public G4VEmModel
{

public:

  G4EmMultiModel(const G4String& nam = "MultiModel");

  virtual ~G4EmMultiModel();

  void Initialise(const G4ParticleDefinition*, const G4DataVector&);

  G4double MinEnergyCut(const G4ParticleDefinition*,
                        const G4MaterialCutsCouple*);


  G4double ComputeDEDX(const G4MaterialCutsCouple*,
		       const G4ParticleDefinition*,
		       G4double kineticEnergy,
		       G4double cutEnergy);

  G4double CrossSection(const G4MaterialCutsCouple*,
			const G4ParticleDefinition*,
			G4double kineticEnergy,
			G4double cutEnergy,
			G4double maxEnergy);

  void SampleSecondaries(std::vector<G4DynamicParticle*>*,
			 const G4MaterialCutsCouple*,
			 const G4DynamicParticle*,
			 G4double tmin,
			 G4double tmax);

  void DefineForRegion(const G4Region*);

  void AddModel(G4VEmModel*, G4double tmin, G4double tmax);

protected:

  G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
    				    G4double kineticEnergy);

private: 

  //  hide assignment operator
  G4EmMultiModel & operator=(const  G4EmMultiModel &right);
  G4EmMultiModel(const  G4EmMultiModel&);

  G4int                         nModels;
  std::vector<G4VEmModel*>      model;
  G4DataVector                  tsecmin;
  G4DataVector                  cross_section;

};

#endif