// ESAF : Euso Simulation and Analysis Framework
// $Id: RadiativeTransfer.hh,v 1.17 2005/04/14 12:44:43 moreggia Exp $
// D. De Marco - M. Pallavicini created Jan, 20 2002
//
// IMPORTANT : EVERY child of this generic class MUST CONTAIN and HANDLE
//             creation and destruction of the PhotonsOnPupil* pointer
//             (the object MUST be in the HEAP)
//


#ifndef __RADIATIVETRANSFER_HH_
#define __RADIATIVETRANSFER_HH_

#include "euso.hh"
#include "EsafConfigurable.hh"
#include "EsafMsgSource.hh"

class PhotonsOnPupil;
class PhotonsInAtmosphere;
class Ground;
class RadiativeProcessesCalculator;
class DetectorGeometry;

class EEvent;

class RadiativeTransfer : public EsafConfigurable, public EsafMsgSource  {
public:
    // ctor
    RadiativeTransfer();
    
    // dtor
    virtual ~RadiativeTransfer();

    // Transfers atmospheric photons until EUSO pupil
    virtual PhotonsOnPupil *Get( PhotonsInAtmosphere*,const DetectorGeometry* dg ) = 0;
    
    // Get ground object
    inline const Ground* GetGround() const {return fGround;}
    
    // get ready for next event
    // NB: fGround must be reset by child classes
    virtual void Reset() = 0;
    
    EsafConfigClass(RadiativeTransfer,RadiativeTransfer)

protected:
    
    Ground* fGround;                      // ground description

    ClassDef(RadiativeTransfer,0)
};

#endif  /* __RADIATIVETRANSFER_HH_ */