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// $Id: SteppingAction.cc,v 1.2 2006/06/29 16:49:22 gunter Exp $
// GEANT4 tag $Name: geant4-09-01-patch-02 $
// 
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#include "SteppingAction.hh"
#include "RunAction.hh"
#include "HistoManager.hh"

#include "G4RunManager.hh"

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SteppingAction::SteppingAction(RunAction* RuAct, HistoManager* Hist)
  :runAction(RuAct), histoManager(Hist)
{ }

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SteppingAction::~SteppingAction()
{ }

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void SteppingAction::UserSteppingAction(const G4Step* aStep)
{  
  G4StepPoint* endPoint = aStep->GetPostStepPoint();
  G4String procName = endPoint->GetProcessDefinedStep()->GetProcessName();

  //count processes 
  //    
  runAction->CountProcesses(procName);
  
  //plot energy transfered
  //
  G4StepPoint* startPoint = aStep->GetPreStepPoint();
  G4double E0 = startPoint->GetKineticEnergy();
  G4double edep = aStep->GetTotalEnergyDeposit();
  G4double E1 = E0 - edep;
  G4double E2 = endPoint->GetKineticEnergy();
  G4double etrans = E1 - E2;
  G4double lgepsE = 0.;
  if (etrans > 0.) lgepsE = std::log10(etrans/E1);

  G4int id = 0;
  if (procName == "muIoni")     id = 1; 
  if (procName == "muPairProd") id = 2;
  if (procName == "muBrems")    id = 3;
  if (procName == "muNucl")     id = 4;    
  histoManager->FillHisto(id,lgepsE);		       
}

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