Lau1DHistPdf.hh

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/*
Copyright 2006 University of Warwick

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

/*
Laura++ package authors:
John Back
Paul Harrison
Thomas Latham
*/

#ifndef LAU_1DHIST_PDF
#define LAU_1DHIST_PDF

#include "LauAbsPdf.hh"

class TH1;

class Lau1DHistPdf : public LauAbsPdf {

        public:

                Lau1DHistPdf(const TString& theVarName, const TH1* hist, Double_t minAbscissa, Double_t maxAbscissa,
                                Bool_t useInterpolation = kTRUE, Bool_t fluctuateBins = kFALSE);

                virtual ~Lau1DHistPdf();


                virtual void calcLikelihoodInfo(const LauAbscissas& abscissas);

                using LauAbsPdf::calcLikelihoodInfo;

                virtual void calcNorm();


                virtual void calcPDFHeight( const LauKinematics* kinematics );

        protected:
                void doBinFluctuation();

                void checkNormalisation();


                Double_t getBinHistValue(Int_t bin) const;


                Double_t interpolate(Double_t x) const;


                Double_t interpolateNorm(Double_t x) const;

        private:
                Lau1DHistPdf(const Lau1DHistPdf& rhs);

                Lau1DHistPdf& operator=(const Lau1DHistPdf& rhs);

                TH1* hist_;

                Bool_t useInterpolation_;
                Bool_t fluctuateBins_;

                Int_t nBins_;
                Double_t axisMin_;
                Double_t axisMax_;
                Double_t axisRange_;

                ClassDef(Lau1DHistPdf,0) // 1D histogram pdf class
};

#endif