//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
// * of contributors to this software. The specific disclaimers,which *
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// * GEANT4 collaboration.                                            *
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//
// $Id: G4TrackLogger.hh,v 1.2 2003/06/16 16:50:14 gunter Exp $
// GEANT4 tag $Name: geant4-05-02 $
//
// ----------------------------------------------------------------------
// Class G4TrackLogger
//
// Class description:
// 
// This class loggs every track via it's id. It may tell if
// a track has been logged. The loggs are cleared when ever 
// the object has been informed about a new event.
// 
// Author: Michael Dressel (Michael.Dressel@cern.ch)
// ----------------------------------------------------------------------
//

#ifndef G4TrackLogger_hh
#define G4TrackLogger_hh G4TrackLogger_hh

#include "globals.hh"
#include <set>

class G4TrackLogger {
public:
  G4TrackLogger();
  ~G4TrackLogger();

  void SetEventID(G4int id);
    // inform the object about the event number
    // if the event number changes the loggs are cleared.

  G4bool FirstEnterance(G4int trid);
    // returns true if the track is new to this event.

  typedef std::set<G4int > TrackIDsSet;
    // log for the track ids.

private:
  G4int fPreviousEventID;
  TrackIDsSet fTrackIDsSet;

};

#endif