/**
   \file 
    Declaration of ConstantFluorescenceModel

   \author Luis Prado Jr.
   \version $Id$
   \date 27 Jan 2004
*/

#ifndef _atm_ConstantFluorescenceModel_h_
#define _atm_ConstantFluorescenceModel_h_

static const char CVSId_atm_ConstantFluorescenceModel[] = 
"$Id$";

#include <atm/VFluorescenceModel.h>
#include <utl/TabulatedFunction.h>

namespace utl{class TabulatedFunction;}

namespace atm {

  /**
     \class ConstantFluorescenceModel ConstantFluorescenceModel.h 
           "atm/ConstantFluorescenceModel.h"

     \brief Model with constant fluorescence yield

     The present model can be used with different fluorescence spectra. 
     The total amount of photons/meter emitted by a charged particle is parsed
     via the model datacard. 

     \author Luis Prado Jr
     \date Jan 2004
     \ingroup atm_models
  */
  class ConstantFluorescenceModel : public atm::VFluorescenceModel{

  public:
  
  ConstantFluorescenceModel(){};
  
  virtual ~ConstantFluorescenceModel(){};
    
    void   Init();
    
    const utl::TabulatedFunction&
    EvaluateFluorescenceYield(const double heightAboveSeaLevel) const; 
    
    const std::vector<double>& GetWavelengths() const;
    double GetdEdX0() const;

    bool HasData() const {return true;};

  private:
    
    mutable utl::TabulatedFunction fFluorescenceSpectrum;
    
    std::vector<double> fWavelength;
    std::vector<double> fFluorescenceYield;
    std::vector<double> fWaveband;
    std::vector<double> fFY;
    double fSpectrumNormalization;
    double fTotalLight;
    
    REGISTER_MODEL(atm::VFluorescenceModel, "Constant",ConstantFluorescenceModel);
  };

} // 


#endif // _atm_ConstantFluorescenceModel_h_

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