//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
// * govern, are listed with their locations in:                      *
// *   http://cern.ch/geant4/license                                  *
// *                                                                  *
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// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.                                                             *
// *                                                                  *
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// * GEANT4 collaboration.                                            *
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//
//
// $Id: G4VUserVisAction.hh,v 1.5 2005/11/22 16:53:27 allison Exp $
// GEANT4 tag $Name: geant4-08-00 $
//
// 

// Class Description:
//
// G4VUserVisAction is added to the scene by the command
// /vis/scene/add/userAction, which instantiates a G4CallbackModel to
// add to the RunDurationModels.  Thus the pure virtual Draw() method
// is invoked whenever the viewer needs to "visit the kernel", e.g.,
// to remake its graphical database, if any, or simply to refresh the
// screen.  operator() is defined to satisfy the template
// G4CallbackModel<G4VUserVisAction>.
//
// See the User Guide for Application Developers, Section 8.8.7 and 8.8.8.


#ifndef G4VUSERVISACTION_HH
#define G4VUSERVISACTION_HH

#include "G4Transform3D.hh"

class G4VUserVisAction {

public: // With description
  G4VUserVisAction() {}
  virtual ~G4VUserVisAction() {}
  virtual void Draw() = 0;
  void operator()(const G4Transform3D& = G4Transform3D()) {
    Draw();
  }

};

#endif