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// $Id: ExN03RunAction.cc,v 1.18 2006/06/29 17:49:11 gunter Exp $
// GEANT4 tag $Name: geant4-09-01-patch-02 $
//
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#include "ExN03RunAction.hh"

#include "G4Run.hh"
#include "G4RunManager.hh"
#include "G4UnitsTable.hh"

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ExN03RunAction::ExN03RunAction()
{}

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ExN03RunAction::~ExN03RunAction()
{}

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void ExN03RunAction::BeginOfRunAction(const G4Run* aRun)
{ 
  G4cout << "### Run " << aRun->GetRunID() << " start." << G4endl;

  //inform the runManager to save random number seed
  G4RunManager::GetRunManager()->SetRandomNumberStore(true);
  
  //initialize cumulative quantities
  //
  sumEAbs = sum2EAbs =sumEGap = sum2EGap = 0.;
  sumLAbs = sum2LAbs =sumLGap = sum2LGap = 0.; 
}

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void ExN03RunAction::fillPerEvent(G4double EAbs, G4double EGap,
                                  G4double LAbs, G4double LGap)
{
  //accumulate statistic
  //
  sumEAbs += EAbs;  sum2EAbs += EAbs*EAbs;
  sumEGap += EGap;  sum2EGap += EGap*EGap;
  
  sumLAbs += LAbs;  sum2LAbs += LAbs*LAbs;
  sumLGap += LGap;  sum2LGap += LGap*LGap;  
}

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void ExN03RunAction::EndOfRunAction(const G4Run* aRun)
{
  G4int NbOfEvents = aRun->GetNumberOfEvent();
  if (NbOfEvents == 0) return;
  
  //compute statistics: mean and rms
  //
  sumEAbs /= NbOfEvents; sum2EAbs /= NbOfEvents;
  G4double rmsEAbs = sum2EAbs - sumEAbs*sumEAbs;
  if (rmsEAbs >0.) rmsEAbs = std::sqrt(rmsEAbs); else rmsEAbs = 0.;
  
  sumEGap /= NbOfEvents; sum2EGap /= NbOfEvents;
  G4double rmsEGap = sum2EGap - sumEGap*sumEGap;
  if (rmsEGap >0.) rmsEGap = std::sqrt(rmsEGap); else rmsEGap = 0.;
  
  sumLAbs /= NbOfEvents; sum2LAbs /= NbOfEvents;
  G4double rmsLAbs = sum2LAbs - sumLAbs*sumLAbs;
  if (rmsLAbs >0.) rmsLAbs = std::sqrt(rmsLAbs); else rmsLAbs = 0.;
  
  sumLGap /= NbOfEvents; sum2LGap /= NbOfEvents;
  G4double rmsLGap = sum2LGap - sumLGap*sumLGap;
  if (rmsLGap >0.) rmsLGap = std::sqrt(rmsLGap); else rmsLGap = 0.;
  
  //print
  //
  G4cout
     << "\n--------------------End of Run------------------------------\n"
     << "\n mean Energy in Absorber : " << G4BestUnit(sumEAbs,"Energy")
     << " +- "                          << G4BestUnit(rmsEAbs,"Energy")  
     << "\n mean Energy in Gap      : " << G4BestUnit(sumEGap,"Energy")
     << " +- "                          << G4BestUnit(rmsEGap,"Energy")
     << G4endl;
     
  G4cout
     << "\n mean trackLength in Absorber : " << G4BestUnit(sumLAbs,"Length")
     << " +- "                               << G4BestUnit(rmsLAbs,"Length")  
     << "\n mean trackLength in Gap      : " << G4BestUnit(sumLGap,"Length")
     << " +- "                               << G4BestUnit(rmsLGap,"Length")
     << "\n------------------------------------------------------------\n"
     << G4endl;   
}

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