// -*- C++ -*-
#ifndef RIVET_FinalStateBREIT_HH
#define RIVET_FinalStateBREIT_HH

#include "Rivet/Particle.hh"
#include "Rivet/Event.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/DISKinematics.hh"


 namespace Rivet {
 
   /// Project all final state particles 
   /// boosted to the briet frame.
   class FinalStateBreit: public FinalState {
 
   public:
  
     /// Constructor
     FinalStateBreit(const DISKinematics& kinematicsp)
     {
       setName("FinalStateBreit");
       addProjection(kinematicsp, "Kinematics");
     }
 
     /// Clone on the heap.
     virtual const Projection* clone() const {
       return new FinalStateBreit(*this);
     }

   protected:
  
     /// Apply the projection on the supplied event.
    void project(const Event& e);
  
     /// Compare projections.
     int compare(const Projection& p) const;
   };
 
 }

 #endif