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//
//
// 
// John Allison  5th April 2001
// A template for a simplest possible graphics driver.
//?? Lines or sections marked like this require specialisation for your driver.

#ifndef G4XXXSCENEHANDLER_HH
#define G4XXXSCENEHANDLER_HH

//#define G4XXXDEBUG  // Comment this out to suppress debug code.

#include "G4VSceneHandler.hh"

class G4XXXSceneHandler: public G4VSceneHandler {

  friend class G4XXXViewer;

public:
  G4XXXSceneHandler(G4VGraphicsSystem& system,
		      const G4String& name);
  virtual ~G4XXXSceneHandler();

  ////////////////////////////////////////////////////////////////
  // Required implementation of pure virtual functions...

  void AddPrimitive(const G4Polyline&);
  void AddPrimitive(const G4Text&);
  void AddPrimitive(const G4Circle&);
  void AddPrimitive(const G4Square&);
  void AddPrimitive(const G4Polyhedron&);
  // Further optional AddPrimitive methods.  Explicitly invoke base
  // class methods if not otherwise defined to avoid warnings about
  // hiding of base class methods.
  void AddPrimitive(const G4Polymarker& polymarker)
  {G4VSceneHandler::AddPrimitive (polymarker);}
  void AddPrimitive(const G4Scale& scale)
  {G4VSceneHandler::AddPrimitive (scale);}

protected:

  static G4int         fSceneIdCount;  // Counter for XXX scene handlers.

private:

#ifdef G4XXXDEBUG
  void PrintThings();
#endif

};

#endif
