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//
// Rich advanced example for Geant4
// HpdSiEnergyLoss.hh for Rich of LHCb
// History:
// Created: Sajan Easo (Sajan.Easo@cern.ch)
// Revision and changes: Patricia Mendez (Patricia.Mendez@cern.ch)
/////////////////////////////////////////////////////////////////////////////
#ifndef HpdSiEnergyLoss_h
#define HpdSiEnergyLoss_h 1
#include "globals.hh"
#include "G4VEnergyLoss.hh"
#include "G4VParticleChange.hh"
#include "G4DynamicParticle.hh"
#include "G4Track.hh"
#include "G4Step.hh"
#include "G4ParticleDefinition.hh"

class HpdSiEnergyLoss  : public G4VEnergyLoss 
{
public:  

  HpdSiEnergyLoss(const G4String& materialName , 
		  const G4String& processName);


  virtual ~HpdSiEnergyLoss();

  G4bool IsApplicable(const G4ParticleDefinition&);
  // true for all charged particles
 G4double GetContinuousStepLimit(const G4Track& track,
                                G4double previousStepSize,
                                G4double currentMinimumStep,
                                G4double& currentSafety);
 G4VParticleChange* AlongStepDoIt(const G4Track& aTrack,
                                     const G4Step& aStep) ;
 G4double GetMeanFreePath(const G4Track& track,
                          G4double previousStepSize,
			  G4ForceCondition* condition);
 G4VParticleChange* PostStepDoIt(const G4Track& aTrack,
                                            const G4Step& aStep);
private:

   // hide  assignment and copy operators
     HpdSiEnergyLoss ( HpdSiEnergyLoss &); 
     HpdSiEnergyLoss & operator=(const  HpdSiEnergyLoss &right);
 
  //now the data members
    G4int fMatIndex;
    G4double MinKineticEnergy ;
    G4double MipEnergy;
    G4double finalRangeforStep;   
    G4String ElossMaterialName;

};
#endif