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// $Id: B2TrackerSD.cc 87359 2014-12-01 16:04:27Z gcosmo $
//
/// \file B2TrackerSD.cc
/// \brief Implementation of the B2TrackerSD class

#include "B2TrackerSD.hh"
#include "G4HCofThisEvent.hh"
#include "G4Step.hh"
#include "G4ThreeVector.hh"
#include "G4SDManager.hh"
#include "G4ios.hh"

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B2TrackerSD::B2TrackerSD(const G4String& name,
                         const G4String& hitsCollectionName) 
 : G4VSensitiveDetector(name),
   fHitsCollection(NULL)
{
  collectionName.insert(hitsCollectionName);
}

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B2TrackerSD::~B2TrackerSD() 
{}

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void B2TrackerSD::Initialize(G4HCofThisEvent* hce)
{
  // Create hits collection

  fHitsCollection 
    = new B2TrackerHitsCollection(SensitiveDetectorName, collectionName[0]); 

  // Add this collection in hce

  G4int hcID 
    = G4SDManager::GetSDMpointer()->GetCollectionID(collectionName[0]);
  hce->AddHitsCollection( hcID, fHitsCollection ); 
}

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G4bool B2TrackerSD::ProcessHits(G4Step* aStep, 
                                     G4TouchableHistory*)
{  
  // energy deposit
  G4double edep = aStep->GetTotalEnergyDeposit();

  if (edep==0.) return false;

  B2TrackerHit* newHit = new B2TrackerHit();

  newHit->SetTrackID  (aStep->GetTrack()->GetTrackID());
  newHit->SetChamberNb(aStep->GetPreStepPoint()->GetTouchableHandle()
                                               ->GetCopyNumber());
  newHit->SetEdep(edep);
  newHit->SetPos (aStep->GetPostStepPoint()->GetPosition());

  fHitsCollection->insert( newHit );

  //newHit->Print();

  return true;
}

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void B2TrackerSD::EndOfEvent(G4HCofThisEvent*)
{
  if ( verboseLevel>1 ) { 
     G4int nofHits = fHitsCollection->entries();
     G4cout << G4endl
            << "-------->Hits Collection: in this event they are " << nofHits 
            << " hits in the tracker chambers: " << G4endl;
     for ( G4int i=0; i<nofHits; i++ ) (*fHitsCollection)[i]->Print();
  }
}

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