/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_7/src/Validation/Geometry/src/MaterialBudgetHcal.cc

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#include "Validation/Geometry/interface/MaterialBudgetHcal.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/ESTransientHandle.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include "SimG4Core/Notification/interface/BeginOfJob.h"
#include "SimG4Core/Notification/interface/BeginOfTrack.h"
#include "SimG4Core/Notification/interface/EndOfTrack.h"

#include "Geometry/Records/interface/IdealGeometryRecord.h"
#include "DetectorDescription/Core/interface/DDCompactView.h"

#include "G4Step.hh"
#include "G4Track.hh"

#include <iostream>

MaterialBudgetHcal::MaterialBudgetHcal(const edm::ParameterSet& p): 
  theHistoHcal(0), theHistoCastor(0) {
  
  edm::ParameterSet m_p = p.getParameter<edm::ParameterSet>("MaterialBudgetHcal");
  rMax        = m_p.getUntrackedParameter<double>("RMax", 4.5)*m;
  zMax        = m_p.getUntrackedParameter<double>("ZMax", 13.0)*m;
  bool doHcal = m_p.getUntrackedParameter<bool>("DoHCAL", true);
  edm::LogInfo("MaterialBudget") << "MaterialBudgetHcal initialized with rMax "
                                 << rMax << " mm and zMax " << zMax << " mm"
                                 << " doHcal is set to " << doHcal;
  if (doHcal)   theHistoHcal   = new MaterialBudgetHcalHistos(m_p);
  else          theHistoCastor = new MaterialBudgetCastorHistos(m_p);
}

MaterialBudgetHcal::~MaterialBudgetHcal() {
  if (theHistoHcal)   delete theHistoHcal;
  if (theHistoCastor) delete theHistoCastor;
}

void MaterialBudgetHcal::update(const BeginOfJob* job) {
  //----- Check that selected volumes are indeed part of the geometry
  // Numbering From DDD
  edm::ESTransientHandle<DDCompactView> pDD;
  (*job)()->get<IdealGeometryRecord>().get(pDD);
  if (theHistoHcal)   theHistoHcal->fillBeginJob((*pDD));

}

void MaterialBudgetHcal::update(const BeginOfTrack* trk) {

  const G4Track * aTrack = (*trk)(); // recover G4 pointer if wanted
  if (theHistoHcal)   theHistoHcal->fillStartTrack(aTrack);
  if (theHistoCastor) theHistoCastor->fillStartTrack(aTrack);
}
 
void MaterialBudgetHcal::update(const G4Step* aStep) {

  //---------- each step
  if (theHistoHcal)   theHistoHcal->fillPerStep(aStep);
  if (theHistoCastor) theHistoCastor->fillPerStep(aStep);

  //----- Stop tracking after selected position
  if (stopAfter(aStep)) {
    G4Track* track = aStep->GetTrack();
    track->SetTrackStatus( fStopAndKill );
  }
}


void MaterialBudgetHcal::update(const EndOfTrack* trk) {

  if (theHistoHcal)   theHistoHcal->fillEndTrack();
  if (theHistoCastor) theHistoCastor->fillEndTrack();
}

bool MaterialBudgetHcal::stopAfter(const G4Step* aStep) {

  G4ThreeVector hitPoint    = aStep->GetPreStepPoint()->GetPosition();
  double        rr = hitPoint.perp();
  double        zz = std::abs(hitPoint.z());

  if (rr > rMax || zz > zMax) {
    LogDebug("MaterialBudget") << " MaterialBudgetHcal::StopAfter R = " << rr
                               << " and Z = " << zz;
    return true;
  } else {
    return false;
  }
}