TCustomBinning.h

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#ifndef TCUSTOMBINNING_H
#define TCUSTOMBINNING_H
/* Copyright(c) 1998-2016, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

class TArrayD;

#include <Rtypes.h>
#include <TBinning.h>
#include <exception>
#include <map>

class TCustomBinning : public TBinning {
public:

  class MinNotSetException : public std::exception {
  public:

    MinNotSetException() {}

    virtual ~MinNotSetException() throw() {}

    virtual const char *what() const throw() { return "Minimum of the binning not set"; }
  };

  TCustomBinning();

  virtual ~TCustomBinning() {}

  virtual TBinning *MakeCopy() const;

  void SetMinimum(Double_t min) { fMinimum = min; fMinimumSet = true; }

  void AddStep(Double_t max, Double_t binwidth);

  virtual void CreateBinEdges(TArrayD &edges) const;

private:
  Double_t                        fMinimum;           
  Bool_t                          fMinimumSet;        
  std::map<double, double>        fSteps;             
};

#endif /* TCUSTOMBINNING_H */