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// $Id: StepMax.hh,v 1.7 2006/06/29 16:52:11 gunter Exp $
// GEANT4 tag $Name: geant4-09-03-cand-01 $
//
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#ifndef StepMax_h
#define StepMax_h 1

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

#include "DetectorConstruction.hh"

class StepMaxMessenger;

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class StepMax : public G4VDiscreteProcess
{
public:

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

  G4bool   IsApplicable(const G4ParticleDefinition&);

  void     SetStepMax(G4int, G4double);

  G4double GetStepMax(G4int k) {return stepMax[k];};

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

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

  G4double GetMeanFreePath(const G4Track&, G4double,G4ForceCondition*)
     {return DBL_MAX;};    

private:

  G4double stepMax[MaxAbsor];
     
  StepMaxMessenger* pMess;
};

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inline 
G4double StepMax::PostStepGetPhysicalInteractionLength( const G4Track& aTrack,
                                    G4double, G4ForceCondition* condition)
{
  // condition is set to "Not Forced"
  *condition = NotForced;
  
  G4double limit = DBL_MAX; 
  G4int n = aTrack.GetVolume()->GetCopyNo();
  if (n < MaxAbsor) limit = stepMax[n];
  return limit;
}

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inline 
G4VParticleChange* StepMax::PostStepDoIt(const G4Track& aTrack, const G4Step&)
{
   // do nothing
   aParticleChange.Initialize(aTrack);
   return &aParticleChange;
}

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#endif