//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
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//
//
// $Id: G4OpenGLStoredViewer.hh,v 1.9 2006/06/29 21:18:02 gunter Exp $
// GEANT4 tag $Name: geant4-08-01-patch-01 $
//
// 
// Andrew Walkden  7th February 1997
// Class G4OpenGLStoredViewer : Encapsulates the `storedness' of
//                              an OpenGL viewer, for inheritance by
//                              derived (X, Xm...) classes.

#ifdef G4VIS_BUILD_OPENGL_DRIVER

#ifndef G4OPENGLSTOREDVIEWER_HH
#define G4OPENGLSTOREDVIEWER_HH

#include "G4VViewer.hh"
#include "G4OpenGLViewer.hh"
#include "G4OpenGLSceneHandler.hh"
#include "G4OpenGLStoredSceneHandler.hh"
#include "G4OpenGLTransform3D.hh"
#include "globals.hh"

class G4OpenGLStoredSceneHandler;

class G4OpenGLStoredViewer: virtual public G4OpenGLViewer {
  
public:
  G4OpenGLStoredViewer (G4OpenGLStoredSceneHandler& scene);
  virtual ~G4OpenGLStoredViewer ();
  
protected:
  void KernelVisitDecision ();
  G4bool CompareForKernelVisit(G4ViewParameters&);
  void DrawDisplayLists ();
  G4OpenGLStoredSceneHandler& fG4OpenGLStoredSceneHandler;
  G4ViewParameters fLastVP;  // Memory for making kernel visit decisions.
};

#endif

#endif