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// $Id: StepMax.hh,v 1.2 2006/06/29 16:38:24 gunter Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
//
/////////////////////////////////////////////////////////////////////////////////.

#ifndef StepMax_h
#define StepMax_h 1

#include "globals.hh"
#include "G4VDiscreteProcess.hh"
#include "G4ParticleDefinition.hh"
#include "G4Step.hh"

class Histo;
// class G4VPhysicalVolume;
// class StepMaxMessenger;

////////////////////////////////////////////////////////////////////////////////
//
//

class StepMax : public G4VDiscreteProcess
{
  public:

     StepMax(const G4String& processName = "UserMaxStep");
    ~StepMax();

     G4bool IsApplicable(const G4ParticleDefinition&);

     void SetMaxStep(G4double);

     G4double GetMaxStep() {return MaxChargedStep;};

     G4double PostStepGetPhysicalInteractionLength( const G4Track& track,
			                       G4double previousStepSize,
			                       G4ForceCondition* condition);

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

     G4double GetMeanFreePath(const G4Track&, G4double, G4ForceCondition*)
     {return 0.;};    // it is not needed here !

  private:

     G4double MaxChargedStep;
     G4double ProposedStep;
     G4double thDensity;

  //   StepMaxMessenger*  pMess;
  //  Histo*             histo;
     G4VPhysicalVolume* checkVolume;
     G4VPhysicalVolume* gasVolume;
     G4bool             first;
};

////////////////////////////////////////////////////////////////////////////////////

#endif

