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// $Id$
//
/// \file GB03BOptrGeometryBasedBiasing.hh
/// \brief Definition of the GB03BOptrGeometryBasedBiasing class

#ifndef GB03BOptrGeometryBasedBiasing_h
#define GB03BOptrGeometryBasedBiasing_h 1

#include "G4VBiasingOperator.hh"
#include "GB03BOptnSplitOrKillOnBoundary.hh"
class G4GenericMessenger;

/// Biasing operator class.

class GB03BOptrGeometryBasedBiasing : public G4VBiasingOperator
{
  public:
    GB03BOptrGeometryBasedBiasing();
    virtual ~GB03BOptrGeometryBasedBiasing();

public:
  // ------------------------------
  // Method added for this example:
  // ------------------------------
  GB03BOptnSplitOrKillOnBoundary* GetSplitAndKillOperation() const
  { return fSplitAndKillOperation; }

  // -------------------------
  // Optional from base class:
  // -------------------------
  void StartRun();
  
private:
  // --------------------------
  // Mandatory from base class:
  // --------------------------
  // Used for splitting/killing:
  virtual G4VBiasingOperation*
  ProposeNonPhysicsBiasingOperation( const G4Track* track,
                                     const G4BiasingProcessInterface* callingProcess );

  // Not used here:
  virtual G4VBiasingOperation* 
  ProposeOccurenceBiasingOperation( const G4Track*,
                                    const G4BiasingProcessInterface* ) { return 0; }
  // Not used here:
  virtual G4VBiasingOperation*
  ProposeFinalStateBiasingOperation( const G4Track*,
                                     const G4BiasingProcessInterface* ) { return 0; }

private:
  GB03BOptnSplitOrKillOnBoundary* fSplitAndKillOperation;
  G4int    fSplittingFactor;
  G4double fApplyProbability;
  // Messengers to change the 
  G4GenericMessenger*  fSplittingFactorMessenger;
  G4GenericMessenger* fApplyProbabilityMessenger;

};

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

#endif

    
