Par02Smearer.hh

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// $Id: $
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#ifndef PAR02_SMEARER_H
#define PAR02_SMEARER_H

#include "Par02Output.hh"
#include "globals.hh"
#include "G4Track.hh"
#include "CLHEP/Random/JamesRandom.h"
#include "CLHEP/Random/RandGauss.h"


class Par02Smearer {
  public:

    static Par02Smearer* Instance();
    
    G4ThreeVector SmearMomentum( const G4Track* aTrack, G4double aResolution = -1 );
    
    G4double SmearEnergy( const G4Track* aTrack, G4double aResolution = -1 );
    
    G4ThreeVector SmearGaussian( const G4Track* aTrackOriginal, G4double aResolution );
    
    G4double Gauss( G4double aMean, G4double aStandardDeviation );

  protected:
    
    Par02Smearer();

    ~Par02Smearer();

  private:
    
    static Par02Smearer* fPar02Smearer;
    
    CLHEP::HepRandomEngine* fRandomEngine;
    
    CLHEP::RandGauss* fRandomGauss;
};

#endif