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/// \file electromagnetic/TestEm5/src/StepMax.cc
/// \brief Implementation of the StepMax class
//
// $Id$
//
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#include "StepMax.hh"
#include "StepMaxMessenger.hh"

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StepMax::StepMax(const G4String& processName)
 : G4VDiscreteProcess(processName),fMaxChargedStep(DBL_MAX),fMess(0)
{
  fMess = new StepMaxMessenger(this);
}
 
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StepMax::~StepMax() { delete fMess; }

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G4bool StepMax::IsApplicable(const G4ParticleDefinition& particle) 
{ 
  return (particle.GetPDGCharge() != 0.);
}

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void StepMax::SetMaxStep(G4double step) { fMaxChargedStep = step;}

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G4double StepMax::PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
                                                  G4double,
                                                  G4ForceCondition* condition )
{
  // condition is set to "Not Forced"
  *condition = NotForced;
  
  G4double ProposedStep = DBL_MAX;

  if((fMaxChargedStep > 0.) &&
     (aTrack.GetVolume() != 0) &&
     (aTrack.GetVolume()->GetName() == "Absorber"))
     ProposedStep = fMaxChargedStep;

  return ProposedStep;
}

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

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