/data/refman/pasoursint/CMSSW_4_1_8_patch13/src/FastSimulation/Utilities/interface/SimpleHistogramGenerator.h

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#ifndef SimpleHistogramGenerator_H
#define SimpleHistogramGenerator_H

#include <vector>

class RandomEngine;
class TH1;
class TAxis;

class SimpleHistogramGenerator
{
 public:

  SimpleHistogramGenerator(TH1 * histo, const RandomEngine* engine);

  virtual ~SimpleHistogramGenerator() {}

  double generate() const;

  int binarySearch(const int& n, 
                   const std::vector<double>& array, 
                   const double& value) const;

 private:

  const RandomEngine* random;

  TH1 * myHisto;

  TAxis * theXaxis;

  int nBins;
 
  // Limits of integration
  double xMin, xMax;

  // Bin width
  double binWidth;

  std::vector<double> integral;

  double nEntries;

};
#endif