/Users/jmonk/Physics/ForIA/ForIA/AnalysisTools/PhiGrid.hh

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#ifndef FORIA_PHIGRID_HH
#define FORIA_PHIGRID_HH

#include "ForIA/IFourMomentum.hh"

#include "boost/smart_ptr.hpp"

#include <vector>

namespace ForIA{
  
  using std::vector;
  
  typedef boost::shared_ptr<vector<double> > GridPtr;
  typedef vector<unsigned int> GridMultiplicity;
  typedef boost::shared_ptr<vector<unsigned int> > GridMultiplicityPtr;
  
  class PhiGrid{
    
  public:
    
    PhiGrid();
    
    bool setFourMomenta(const MomentumVector &momenta);
    bool setNSegments(int nSegs);
    
    GridPtr grid() const;
    GridPtr etaGrid(IFourMomentumConstPtr centre=IFourMomentumConstPtr()) const;
    
    GridMultiplicityPtr multiplicity()const;
    
    int nSegments() const;
    
  private:
    
    void update()const;
    
    void updateEta(IFourMomentumConstPtr centre)const;
    
    bool m_canChangeSettings;
    bool m_haveSetNSegments;
    
    int m_nSegments;
    double m_phi2Bin;
    double m_eta2Bin;
    mutable GridPtr m_grid;
    mutable GridPtr m_etaGrid;
    mutable GridMultiplicityPtr m_multiplicity;
    
    double m_etaMin;
    
    mutable bool m_updateGrid;
    mutable bool m_updateEta;
    
    
    MomentumVector m_momenta;
    
  };
}

#endif