RayTracer.h

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#ifndef _TelescopeSimulatorKG_RayTracer_h_
#define _TelescopeSimulatorKG_RayTracer_h_


#include "RTResult.h"

#include <string>

namespace fdet {
  class Telescope;
}

namespace utl {
  class RandomEngine;
  class Photon;
  class Point;
}

class TPolyLine3D;
class TObjArray;

namespace TelescopeSimulatorKG {

  //class Photon;
  class Lens;
  class Mirror;
  class Camera;
  class Filter;
  
  class RayTracer {
    
    RayTracer();
    RayTracer& operator=(const RayTracer&);
    RayTracer(const RayTracer&);
    
  public:
    
    RayTracer(const fdet::Telescope& tel,
              utl::RandomEngine& random,
              bool doShadow=true, 
              bool doShadowSupport=true, 
              bool hasMercedes=true,
              bool plotPhotonTracks=false,
              double drawPhotonsProbabilty=0);
    
    ~RayTracer();
    
    RTResult Trace(const utl::Photon& photonIn, utl::Photon& photonOut,
                   int& nreflections, int& col, int& row);
    
    TPolyLine3D* DrawTrack(const utl::Point& p1, const utl::Point& p2, int color) const;

    void SetCorrectorRing(bool f) { fHasCorrectorRing=f; }

    static int GetDebugLevel() { return fgDebugLevel; }
    static void SetDebugLevel(int l) { fgDebugLevel = l;}
    
  private:
    const fdet::Telescope *fTel;
    const utl::RandomEngine *fRandom;
    bool fDoShadow;
    bool fDoShadowSupport;
    bool fHasMercedes;
    bool fHasCorrectorRing;
    
    // for 3d plotting
    bool fPlotPhotonTracks;
    double fDrawPhotonProbability;
    TObjArray* fObjectsPhotons;

    Lens *fLens;
    Camera *fCamera;
    Mirror *fMirror;
    Filter *fFilter;

    static int fgDebugLevel;
  };
  
} // TelescopeSimulatorKG

#endif // _TelescopeSimulatorKG_RayTracer_h_

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