Kinematics.h

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//******************************************************************************
// This file is part of AmpTools, a package for performing Amplitude Analysis
// 
// Copyright Trustees of Indiana University 2010, all rights reserved
// 
// This software written by Matthew Shepherd, Ryan Mitchell, and 
//                  Hrayr Matevosyan at Indiana University, Bloomington
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#if !defined(KINEMATICS)
#define KINEMATICS

#include <vector>
#include <cassert>

#include "TLorentzVector.h"

using namespace std;

class Kinematics
{
  
public:
  
  Kinematics():
  m_eventID( Kinematics::m_globalEventID++ ), 
  m_weight( 1.0 ) {}
  
  Kinematics( const vector< TLorentzVector >& particleList,
             float weight = 1.0 ) :
  m_eventID(  Kinematics::m_globalEventID++ ),
  m_particleList( particleList ),
  m_weight( weight ) { assert( particleList.size() <= kMaxParticles ); }
  
  virtual ~Kinematics() {}
  
  enum { kMaxParticles = 6 };
  
  void setEventID( int eventID ) { m_eventID = eventID; }

  void setParticleList( const vector< TLorentzVector >& particleList );
  
  void setWeight( float weight ) { m_weight = weight; }
    
  const vector<TLorentzVector>& particleList() const;

  const TLorentzVector& particle( unsigned int index ) const;

  int eventID() const { return m_eventID; }
  
  float weight() const { return m_weight; }
  
private:
  
  int m_eventID;
  vector<TLorentzVector> m_particleList;
  float m_weight;
  
  static int m_globalEventID;
};

#endif