Lau2DHistDPPdf.hh

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// Copyright University of Warwick 2004 - 2013.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

// Authors:
// Thomas Latham
// John Back
// Paul Harrison

#ifndef LAU_2DHIST_DP_PDF
#define LAU_2DHIST_DP_PDF

#include "Rtypes.h"

class TH2;
class LauKinematics;
class LauVetoes;

class Lau2DHistDPPdf {

        public:

                Lau2DHistDPPdf(const TH2* hist, LauKinematics* kinematics, const LauVetoes* vetoes,
                                Bool_t useInterpolation = kTRUE, Bool_t fluctuateBins = kFALSE,
                                Bool_t useUpperHalfOnly = kFALSE, Bool_t squareDP = kFALSE);

                virtual ~Lau2DHistDPPdf();

                Double_t getMaxHeight() const {return maxHeight_;}

                Double_t getHistNorm() const {return norm_;}


                Double_t interpolateXY(Double_t x, Double_t y) const;


                Double_t interpolateXYNorm(Double_t x, Double_t y) const;

        protected:

                Double_t getBinHistValue(Int_t xBinNo, Int_t yBinNo) const;

                void calcMaxHeight();

                void calcHistNorm();

                void checkNormalisation();

                void doBinFluctuation();

        private:
                TH2* hist_;
        
                LauKinematics* kinematics_;

                const LauVetoes* vetoes_;

                Double_t minX_;
                Double_t maxX_;
                Double_t minY_;
                Double_t maxY_;
                Double_t rangeX_;
                Double_t rangeY_;
                
                Double_t binXWidth_;
                Double_t binYWidth_; 
                Double_t invBinXWidth_;
                Double_t invBinYWidth_;

                Double_t maxHeight_;
                
                Int_t nBinsX_;
                Int_t nBinsY_;

                Double_t norm_;

                Bool_t useInterpolation_;
                Bool_t upperHalf_;
                Bool_t squareDP_;
                
                ClassDef(Lau2DHistDPPdf,0) // 2D Histogram utility class for DP analyses
};

#endif