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MissingMomentum.h

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// ================================================
// MissingMomentum class description
// ================================================
//
// Namespace Atlfast::
//
// class: MissingMomentum
//
// Description: 
//
//  Store things needed by a number of algorithms

// ................................................................
//

#ifndef __ATLFAST_MissingMomentum__
#define __ATLFAST_MissingMomentum__

#include "GaudiKernel/DataObject.h"
#include "AtlfastCode/HepMC_helper.h"
static const CLID CLID_MissingMomentum = 2310;
namespace Atlfast {

  class MissingMomentum : public DataObject {
  public:
    
    MissingMomentum(): DataObject(), m_vec(0., 0., 0., 0){}
    MissingMomentum(const HepLorentzVector& v): DataObject(), m_vec(v){}
    MissingMomentum(const MissingMomentum& m): DataObject(m), m_vec(m.m_vec){}
    static const CLID& classID() { return CLID_MissingMomentum;}
    virtual const CLID& clID() const { return classID();}
    virtual ~MissingMomentum(){}

    double px() const {return m_vec.x();}
    double py() const {return m_vec.y();}
    HepLorentzVector momentum()const {return m_vec;}

  private:
    HepLorentzVector m_vec;
  };
   
}  //end of namespace bracket

#endif

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