#ifndef _fdet_Mirror_h_
#define _fdet_Mirror_h__

/**
   \file
   \brief Description of a mirror.

   \author L. Prado Jr 
   \author S. Argiro
   \version $Id: Mirror.h 21179 2012-05-17 18:05:47Z javierg $
   \date 29 Jun 2003
*/

#include <list>
#include <string>


namespace utl {
  class TabulatedFunction;
}


namespace fdet {

  class Telescope;  

  /**
    \class Mirror
    \brief Description of a mirror.

    \author L. Prado Jr 
    \author S. Argiro
    \version $Id: Mirror.h 21179 2012-05-17 18:05:47Z javierg $
    \date 29 Jun 2003
    \ingroup fdet
  */
  
  class Mirror {

  public:
    unsigned int GetEyeId() const { return fEyeId; }
    unsigned int GetTelescopeId() const { return fTelescopeId; }

    /// Average reflectivity of the segments as a function of the wavelength
    const utl::TabulatedFunction& GetReflectivity() const;
    /// Average radius of curvature for the segments
    double GetRadiusOfCurvature() const;
    /// Variable to model the mirror surface imperfection
    double GetSigmaNormal() const;

    void Update();

  private:
    Mirror(const unsigned int eyeId, const unsigned int telId,
           const std::string& physEyeIdString,
           const std::string& physTelIdString);
    ~Mirror();
    // prevent copying
    Mirror(const Mirror&);
    Mirror& operator=(const Mirror&);

    template<typename T> inline const T& GetMirrorData(T*& requestedData,
                                                       const std::string& property,
                                                       const std::string& component,
                                                       const std::string& errorMsg) const;
    template<typename T> inline void GetMirrorData(T& requestedData,
                                                   const std::string& property,
                                                   const std::string& component,
                                                   const std::string& errorMsg) const;

    unsigned int fEyeId;
    unsigned int fTelescopeId;
    std::string fPhysicalEyeIdString;
    std::string fPhysicalTelescopeIdString;

    // Quantities filled by lazy evaluation
    // ------------------------------------
    mutable double* fRadiusOfCurvature;
    mutable double* fSigmaNormal;
    mutable utl::TabulatedFunction* fReflectivity;

    friend class Telescope;

  };

}


#endif //_fdet_Mirror_h_

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