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SimpleKinematic.h

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// ================================================
// SimpleKinematic class description
// ================================================
//
// THIS TEXT TO BE REPLACED BY ATLAS STANDARD FORMAT
//
// Namespace Atlfast::
//
// class: SimpleKinematic
//
// Authors: P.Clarke, H.Phillips, E.Richter-Was, P.Sherwood, R.Steward
//
// Description: 
//
//  Convertor from various types to IKinematic
//
//..................................................


#ifndef ATLFAST_SIMPLEKINEMATIC_H
#define ATLFAST_SIMPLEKINEMATIC_H


// Kinematic classes.
#include "HepMC/GenParticle.h"
#include "CLHEP/Vector/LorentzVector.h"
#include "AtlfastCode/IKinematic.h"

namespace Atlfast  {
  class SimpleKinematic: public IKinematic {
  public:
    SimpleKinematic(const HepMC::GenParticle& p): m_momentum(p.momentum()){}
    SimpleKinematic(const HepMC::GenParticle* p): m_momentum(p->momentum()){}

    //IKinematic interface
    virtual HepLorentzVector  momentum() const {return m_momentum;}
    virtual double  eta() const{ return m_momentum.pseudoRapidity();}
    virtual double  phi() const{ return m_momentum.phi();}
    virtual double  pT()  const{ return m_momentum.perp();}
    virtual double  eT()  const{ return m_momentum.perp();}
    virtual double  mT()  const{ return m_momentum.mt();}
    virtual ~SimpleKinematic(){}
  private:
    const HepLorentzVector m_momentum;
  };
}
#endif

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