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// $Id: G4PSCellFlux.cc,v 1.2 2008/12/28 20:32:00 asaim Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
// G4PSCellFlux
#include "G4PSCellFlux.hh"
#include "G4Track.hh"
#include "G4VSolid.hh"
#include "G4VPhysicalVolume.hh"
#include "G4VPVParameterisation.hh"
#include "G4UnitsTable.hh"

///////////////////////////////////////////////////////////////////////////////
// (Description)
//   This is a primitive scorer class for scoring cell flux.
//   The Cell Flux is defined by  a sum of track length divided 
//   by the geometry volume, where all of the tracks in the geometry 
//   are taken into account. 
//
//   If you want to score only tracks passing through the geometry volume,
//  please use G4PSPassageCellFlux.
//
//
// Created: 2005-11-14  Tsukasa ASO, Akinori Kimura.
// 
///////////////////////////////////////////////////////////////////////////////

G4PSCellFlux::G4PSCellFlux(G4String name, G4int depth)
    :G4VPrimitiveScorer(name,depth),HCID(-1)
{;}

G4PSCellFlux::~G4PSCellFlux()
{;}

G4bool G4PSCellFlux::ProcessHits(G4Step* aStep,G4TouchableHistory*)
{
  G4double stepLength = aStep->GetStepLength();
  if ( stepLength == 0. ) return FALSE;

  G4VPhysicalVolume* physVol = aStep->GetPreStepPoint()->GetPhysicalVolume();
  G4VPVParameterisation* physParam = physVol->GetParameterisation();
  G4VSolid* solid = 0;
  if(physParam)
  { // for parameterized volume
    G4int idx = ((G4TouchableHistory*)(aStep->GetPreStepPoint()->GetTouchable()))
                ->GetReplicaNumber(indexDepth);
    solid = physParam->ComputeSolid(idx, physVol);
    solid->ComputeDimensions(physParam,idx,physVol);
  }
  else
  { // for ordinary volume
    solid = physVol->GetLogicalVolume()->GetSolid();
  }

  G4double CellFlux = stepLength / (solid->GetCubicVolume());
  CellFlux *= aStep->GetPreStepPoint()->GetWeight(); 
  G4int index = GetIndex(aStep);
  EvtMap->add(index,CellFlux);

  return TRUE;
}

void G4PSCellFlux::Initialize(G4HCofThisEvent* HCE)
{
  EvtMap = new G4THitsMap<G4double>(detector->GetName(),
				    GetName());
  if ( HCID < 0 ) HCID = GetCollectionID(0);
  HCE->AddHitsCollection(HCID,EvtMap);
}

void G4PSCellFlux::EndOfEvent(G4HCofThisEvent*)
{;}

void G4PSCellFlux::clear(){
  EvtMap->clear();
}

void G4PSCellFlux::DrawAll()
{;}

void G4PSCellFlux::PrintAll()
{
  G4cout << " MultiFunctionalDet  " << detector->GetName() << G4endl;
  G4cout << " PrimitiveScorer " << GetName() <<G4endl; 
  G4cout << " Number of entries " << EvtMap->entries() << G4endl;
  std::map<G4int,G4double*>::iterator itr = EvtMap->GetMap()->begin();
  for(; itr != EvtMap->GetMap()->end(); itr++) {
    G4cout << "  copy no.: " << itr->first
	   << "  cell flux : " << *(itr->second)*cm*cm << " [cm^-2]"
	   << G4endl;
  }
}

