ParticleIdentifier.h

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#ifndef INCLUDE_EICSMEAR_ERHIC_PARTICLEIDENTIFIER_H_
#define INCLUDE_EICSMEAR_ERHIC_PARTICLEIDENTIFIER_H_

#include <cmath>
#include <limits>
#include <vector>

#include "eicsmear/erhic/BeamParticles.h"
#include "eicsmear/erhic/Particle.h"
#include "eicsmear/erhic/VirtualEvent.h"

class ParticleIdentifier {
 public:
  ParticleIdentifier(const int leptonPdg = ~unsigned(0)/2);

  virtual ~ParticleIdentifier() { }

  virtual bool isBeamLepton(const erhic::VirtualParticle&) const;

  virtual bool isBeamNucleon(const erhic::VirtualParticle&) const;

  virtual bool isScatteredLepton(const erhic::VirtualParticle&) const;

  virtual bool IsVirtualPhoton(const erhic::VirtualParticle&) const;

  virtual bool SkipParticle(const erhic::VirtualParticle&) const;

  virtual void SetLeptonBeamPdgCode(int pdg);

  virtual int GetLeptonBeamPdgCode() const;

  virtual bool SetChargedCurrent(bool isChargedCurrent);

  static bool IdentifyBeams(const erhic::VirtualEvent&, BeamParticles&);

  static bool IdentifyBeams(const erhic::VirtualEvent&,
                            std::vector<const erhic::VirtualParticle*>&);

 protected:
  Int_t DetermineScatteredType(Int_t);

  Bool_t mChargedCurrent;
  Int_t mLeptonBeamPdgCode;
  Int_t mScatteredPdgCode;
};

inline int ParticleIdentifier::GetLeptonBeamPdgCode() const {
  return mLeptonBeamPdgCode;
}

#endif  // INCLUDE_EICSMEAR_ERHIC_PARTICLEIDENTIFIER_H_