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// $Id: G4WeightCutOffProcess.hh,v 1.2 2002/10/16 16:26:59 dressel Exp $
// GEANT4 tag $Name: geant4-05-00 $
//
// ----------------------------------------------------------------------
// Class G4WeightCutOffProcess
//
// Class description:
//

// Author: Michael Dressel (Michael.Dressel@cern.ch)
// ----------------------------------------------------------------------
#ifndef G4WeightCutOffProcess_hh 
#define G4WeightCutOffProcess_hh G4WeightCutOffProcess_hh

#include "G4VProcess.hh"
#include "G4VTrackTerminator.hh"
#include "G4GeometryCell.hh"

class G4VGCellFinder;
class G4VIStore;

class G4WeightCutOffProcess : public G4VProcess
{

public:  // with description

  G4WeightCutOffProcess(G4double wsurvival,
			G4double wlimit,
			G4double isource,
			G4VIStore *istore,
			const G4VGCellFinder &aGCellFinder,
			const G4String &aName = "WeightCutOffProcess");
    // create a G4ParticleChange

  virtual ~G4WeightCutOffProcess();
    // delete the G4ParticleChange

  virtual G4double 
  PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
				       G4double   previousStepSize,
				       G4ForceCondition* condition);
    // make the process beeing forced

  virtual G4VParticleChange * PostStepDoIt(const G4Track&, 
				   const G4Step&);


  const G4String &GetName() const;

 
public:  // without description

  //  no operation in  AtRestDoIt and  AlongStepDoIt

  virtual G4double 
  AlongStepGetPhysicalInteractionLength(const G4Track&,
					G4double  ,
					G4double  ,
					G4double& ,
					G4GPILSelection*);
  
  virtual G4double 
  AtRestGetPhysicalInteractionLength(const G4Track& ,
				     G4ForceCondition*);

  virtual G4VParticleChange* AtRestDoIt(const G4Track&, const G4Step&);
  virtual G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&);
  
private:

  G4WeightCutOffProcess(const G4WeightCutOffProcess &);
  G4WeightCutOffProcess &operator=(const G4WeightCutOffProcess &);

  G4ParticleChange *fParticleChange;
  G4double fWeightSurvival;
  G4double fWeightLimit;
  G4double fSourceImportance;
  G4VIStore *fIStore;
  const G4VGCellFinder &fGCellFinder;

};

#endif