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//
//
// $Id$
//
//

// class description:
//
//  This is a concrete class of G4VTrajectoryPoint which represents a point where
// a ray crosses upon a surface of a volume regardless of its visibility. Objects
// of this class are created by G4RayTrajectory class object.
//

/////////////////////////
//G4RayTrajectoryPoint.hh
/////////////////////////

#ifndef G4RayTrajectoryPoint_h
#define G4RayTrajectoryPoint_h 1

class G4VisAttributes;
#include "globals.hh"
#include "G4VTrajectoryPoint.hh"
#include "G4Allocator.hh"
#include "G4ThreeVector.hh"

class G4RayTrajectoryPoint :public G4VTrajectoryPoint
{
  public:
    G4RayTrajectoryPoint();
    virtual ~G4RayTrajectoryPoint();

    inline void *operator new(size_t);
    inline void operator delete(void *aTrajectoryPoint);
  //    inline int operator==(const G4RayTrajectoryPoint& right) const
  // { return (this==&right); };

  private:
    const G4VisAttributes* preStepAtt;
    const G4VisAttributes* postStepAtt;
    G4ThreeVector    surfaceNormal;
    G4double         stepLength;

  public:
    inline void SetPreStepAtt(const G4VisAttributes* val) { preStepAtt = val; }
    inline const G4VisAttributes* GetPreStepAtt() const { return preStepAtt; }
    inline void SetPostStepAtt(const G4VisAttributes* val) { postStepAtt = val; }
    inline const G4VisAttributes* GetPostStepAtt() const { return postStepAtt; }
    inline void SetSurfaceNormal(G4ThreeVector val) { surfaceNormal = val; }
    inline G4ThreeVector GetSurfaceNormal() const { return surfaceNormal; }
    inline void SetStepLength(G4double val) { stepLength = val; }
    inline G4double GetStepLength() const { return stepLength; }

    inline const G4ThreeVector GetPosition() const { return G4ThreeVector();}
    // Dummy function (not used) to satisfy base class pure virtual function.
};

#if defined G4VIS_ALLOC_EXPORT
  extern G4DLLEXPORT G4Allocator<G4RayTrajectoryPoint> G4RayTrajectoryPointAllocator;
#else
  extern G4DLLIMPORT G4Allocator<G4RayTrajectoryPoint> G4RayTrajectoryPointAllocator;
#endif

inline void* G4RayTrajectoryPoint::operator new(size_t)
{
   void *aTrajectoryPoint;
   aTrajectoryPoint = (void *) G4RayTrajectoryPointAllocator.MallocSingle();
   return aTrajectoryPoint;
}

inline void G4RayTrajectoryPoint::operator delete(void *aTrajectoryPoint)
{
   G4RayTrajectoryPointAllocator.FreeSingle((G4RayTrajectoryPoint *) aTrajectoryPoint);
}

#endif