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BFieldCutter.h

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//*************************************************************************
//*                                                                       *
//*                     class BFieldCutter  GenParticle Selector          *
//*                                                                       *
//*  Select GenParticles above pt threshold to reach barrel calorimeter   *
//*  Threshold is determined by the magnetic field and GenParticle charge *
//*                                                                       *
//*************************************************************************  
#ifndef HEPMCHELPER_BFIELDCUTTER_H
#define HEPMCHELPER_BFIELDCUTTER_H

#ifndef HEPMCHELPER_IMCSELECTOR_H
#include "AtlfastUtils/HepMC_helper/IMCselector.h"
#endif

#ifndef ALTFAST_CHARGESERVICE_H
#include "AtlfastUtils/ChargeService.h"
#endif

namespace HepMC_helper{

  class BFieldCutter: public IMCselector {
  public:
    
    BFieldCutter(bool fieldOn):m_chargeService(Atlfast::ChargeService()){
      m_ptCut = (fieldOn)? 0.5:0.0;
    }
   
    IMCselector* create() const;
    bool operator()( const Particle* const )const;
    bool operator()( const Particle& p ) const;
    
  private:
    double m_ptCut;
    Atlfast::ChargeService m_chargeService;    
  };
}//namespace
#endif

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