RooAbsBinning.h

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/*****************************************************************************
 * Project: RooFit                                                           *
 * Package: RooFitCore                                                       *
 *    File: $Id: RooAbsBinning.h,v 1.13 2007/05/11 09:11:30 verkerke Exp $
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
 *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
 *                                                                           *
 * Copyright (c) 2000-2005, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
 *****************************************************************************/
#ifndef ROO_ABS_BINNING
#define ROO_ABS_BINNING
 
#include "Rtypes.h"
#include "RooPrintable.h"
#include "TNamed.h"
class TIterator ;
class RooAbsRealLValue ;
class RooAbsReal ;
 
class RooAbsBinning : public TNamed, public RooPrintable {
public:
 
  RooAbsBinning(const char* name=0) ;
  RooAbsBinning(const RooAbsBinning& other, const char* name=0) : TNamed(name,name), RooPrintable(other) {
    // Copy constructor
  }
  TObject* Clone(const char* newname=0) const override { return clone(newname) ; }
  virtual RooAbsBinning* clone(const char* name=0) const = 0 ;
  ~RooAbsBinning() override ;
 
  /// Return number of bins.
  Int_t numBins() const {
    return numBoundaries()-1 ;
  }
  virtual Int_t numBoundaries() const = 0 ;
  virtual Int_t binNumber(double x) const = 0 ;
  virtual Int_t rawBinNumber(double x) const { return binNumber(x) ; }
  virtual double binCenter(Int_t bin) const = 0 ;
  virtual double binWidth(Int_t bin) const = 0 ;
  virtual double binLow(Int_t bin) const = 0 ;
  virtual double binHigh(Int_t bin) const = 0 ;
  virtual bool isUniform() const { return false ; }
 
  virtual void setRange(double xlo, double xhi) = 0 ;
  /// Change lower bound to xlo.
  virtual void setMin(double xlo) {
    setRange(xlo,highBound()) ;
  }
  /// Change upper bound to xhi.
  virtual void setMax(double xhi) {
    setRange(lowBound(),xhi) ;
  }
 
  virtual double lowBound() const = 0 ;
  virtual double highBound() const = 0 ;
  virtual double averageBinWidth() const = 0 ;
 
 
  virtual double* array() const = 0 ;
 
  inline void Print(Option_t *options= 0) const override {
    // Printing interface
    printStream(defaultPrintStream(),defaultPrintContents(options),defaultPrintStyle(options));
  }
 
  void printName(std::ostream& os) const override ;
  void printTitle(std::ostream& os) const override ;
  void printClassName(std::ostream& os) const override ;
  void printArgs(std::ostream& os) const override ;
  void printValue(std::ostream& os) const override ;
 
  /// Interface function. If true, min/max of binning is parameterized by external RooAbsReals.
  /// Default to `false`, unless overridden by a sub class.
  virtual bool isParameterized() const {
    return false ;
  }
  /// Return pointer to RooAbsReal parameterized lower bound, if any.
  virtual RooAbsReal* lowBoundFunc() const {
    return 0 ;
  }
  /// Return pointer to RooAbsReal parameterized upper bound, if any.
  virtual RooAbsReal* highBoundFunc() const {
    return 0 ;
  }
  /// If true (default), the range definition can be shared across clones of a RooRealVar.
  virtual bool isShareable() const {
    return true ;
  }
  /// Hook interface function to execute code upon insertion into a RooAbsRealLValue.
  virtual void insertHook(RooAbsRealLValue&) const {  }
  /// Hook interface function to execute code upon removal from a RooAbsRealLValue.
  virtual void removeHook(RooAbsRealLValue&) const {  }
 
 
protected:
 
  ClassDefOverride(RooAbsBinning,2) // Abstract base class for binning specification
};
 
#endif