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S0HadLateHcalEc1.cxx

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// ================================================
// Implementation of S0HadLateHcalEc1
// ================================================

#include "FastShowerUtils/Samplers/S0HadLateHcalEc1.h"

#include "FastShowerUtils/PolyArgs.h"
#include "FastShowerUtils/IFn.h"
#include "FastShowerUtils/CoreSamples.h"
#include "FastShowerUtils/IProcessedDist.h"
#include "FastShowerUtils/IConfigurer.h"
#include "FastShowerUtils/LinearProcessor.h"
#include "FastShowerUtils/ProcessedNormal.h"
#include "FastShowerUtils/IInTail.h"
#include <cmath>
#include <iostream>

namespace FastShower{

  using std::pair;

  const double S0HadLateHcalEc1::s_nSigma1(3.0);
  const double S0HadLateHcalEc1::s_nSigma2(4.0);

  S0HadLateHcalEc1::S0HadLateHcalEc1(IUpdatingGaussian* g, 
                                     IProcessedDist* tail,
                                     IInTail* it):
    ISampler(), ISlice0(), DebugBase("S0HadLateHcalEc1"), 
    m_peak(g), m_tail(tail), m_inTail(it){}
  S0HadLateHcalEc1::S0HadLateHcalEc1(const IConfigurer* configurer,
                                     const std::string& s):
    DebugBase(s), m_peak(0), m_tail(0), m_inTail(0){
    m_peak           = configurer->findIUG( text()+"Peak" ) ;
    m_tail           = configurer->makeProcessedFlat( text() );
    m_inTail         = configurer->makeIInTail( text() );
    cout<<text()<<" finishing construction"<<endl;
  }
  ISampler* S0HadLateHcalEc1::clone() const {return new S0HadLateHcalEc1(*this);}
  void S0HadLateHcalEc1::sample(const PolyArgs& pa, CoreSamples& cs)const{

    if( m_inTail->operator()(pa) ){
      cs.fill(this, evalTail(pa) );
    }else{
      cs.fill(this, evalPeak(pa) );
    }
  }
  double S0HadLateHcalEc1::evalTail(const PolyArgs& pa) const {
    
    pair<double, double>  peakParams = m_peak->parameters(pa);
    double peakMean  = peakParams.first;
    double peakSigma = peakParams.second;
    
    //calculate ther upper and lower limits of the tail
    double uLimit = peakMean - s_nSigma1*peakSigma;
    //
    double lLimit = peakMean - s_nSigma2*peakSigma;
    if(lLimit<0.){lLimit=0.;}
    //
    //IMPROVEME - the logic of setting limits to be made clearer
    if(uLimit<0.){ uLimit=peakMean;}

    // Sample from a Traingle dist.
    LinearProcessor lp((uLimit-lLimit), lLimit);
    return m_tail->sample(&lp);
  }
  double S0HadLateHcalEc1::evalPeak(const PolyArgs& pa)const{
    return m_peak->sample(0.0, s_nSigma1, 1.0, s_nSigma1, pa);
  }
  double S0HadLateHcalEc1::lastValue(const CoreSamples& cs) const {
    return cs.give(this);
  }
  void S0HadLateHcalEc1::components(IDebug::Cpts& v) const{
    v.push_back(m_peak);
    v.push_back(m_tail);
    v.push_back(m_inTail);
  }
  
}//namespace

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