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// John Allison  17th March 2000

#ifndef G4RAYTRACERSCENEHANDLER_HH
#define G4RAYTRACERSCENEHANDLER_HH

#include "G4VSceneHandler.hh"

#include "G4ModelingParameters.hh"
#include <map>

class G4RayTracerSceneHandler: public G4VSceneHandler
{
public:

  G4RayTracerSceneHandler(G4VGraphicsSystem& system,
			  const G4String& name = "");
  virtual ~G4RayTracerSceneHandler();

  void BuildVisAttsMap (const G4VSolid& solid);
  // BuildVisAttsMap is the appropriate name for what it does in this class
  // but it is actually an override of G4VSceneHandler::RequestPrimitives.
  void RequestPrimitives (const G4VSolid& solid)
  {BuildVisAttsMap(solid);}

  // Required pure virtual functions, not used in Ray Tracer.
  void AddPrimitive(const G4Polyline&){}
  void AddPrimitive(const G4Text&){}
  void AddPrimitive(const G4Circle&){}
  void AddPrimitive(const G4Square&){}
  void AddPrimitive(const G4Polyhedron&){}
  void AddPrimitive(const G4Polymarker&){}
  void AddPrimitive(const G4Scale&){}

  void ClearStore ();

  struct PathLessThan
  {G4bool operator()
    (const G4ModelingParameters::PVPointerCopyNoPath&,
     const G4ModelingParameters::PVPointerCopyNoPath&) const;
  };

  const std::map
  <G4ModelingParameters::PVPointerCopyNoPath,G4VisAttributes,PathLessThan>&
  GetSceneVisAttsMap() const
  {return fSceneVisAttsMap;}

private:
  
  static G4int fSceneIdCount;  // Counter for RayTracer scene handlers.

  std::map
  <G4ModelingParameters::PVPointerCopyNoPath,G4VisAttributes,PathLessThan>
  fSceneVisAttsMap;
};

#endif
