G4PSPassageTrackLength.cc

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//
// G4PSPassageTrackLength
#include "G4PSPassageTrackLength.hh"
#include "G4StepStatus.hh"
#include "G4Track.hh"
#include "G4UnitsTable.hh"
#include "G4VScoreHistFiller.hh"
 
////////////////////////////////////////////////////////////////////////////////
// (Description)
//   This is a primitive scorer class for scoring only track length.
//   The tracks which passed a geometry is taken into account.
//
//
// Created: 2005-11-14  Tsukasa ASO, Akinori Kimura.
// 2010-07-22   Introduce Unit specification.
// 2020-10-06   Use G4VPrimitivePlotter and fill 1-D histo of track length
//              vs. number of tracks (not weighted)             (Makoto Asai)
//
///////////////////////////////////////////////////////////////////////////////
 
G4PSPassageTrackLength::G4PSPassageTrackLength(const G4String& name, G4int depth)
  : G4PSPassageTrackLength(name, "mm", depth)
{}
 
G4PSPassageTrackLength::G4PSPassageTrackLength(const G4String& name,
                                               const G4String& unit,
                                               G4int depth)
  : G4VPrimitivePlotter(name, depth)
  , HCID(-1)
  , fCurrentTrkID(-1)
  , fTrackLength(0.)
  , EvtMap(nullptr)
  , weighted(false)
{
  SetUnit(unit);
}
 
G4bool G4PSPassageTrackLength::ProcessHits(G4Step* aStep, G4TouchableHistory*)
{
  if(IsPassed(aStep))
  {
    G4int index = GetIndex(aStep);
    EvtMap->add(index, fTrackLength);
 
    if(!hitIDMap.empty() && hitIDMap.find(index) != hitIDMap.cend())
    {
      auto filler = G4VScoreHistFiller::Instance();
      if(filler == nullptr)
      {
        G4Exception(
          "G4PSPassageTrackLength::ProcessHits", "SCORER0123", JustWarning,
          "G4TScoreHistFiller is not instantiated!! Histogram is not filled.");
      }
      else
      {
        filler->FillH1(hitIDMap[index], fTrackLength, 1.);
      }
    }
  }
 
  return true;
}
 
G4bool G4PSPassageTrackLength::IsPassed(G4Step* aStep)
{
  G4bool Passed = false;
 
  G4bool IsEnter = aStep->GetPreStepPoint()->GetStepStatus() == fGeomBoundary;
  G4bool IsExit  = aStep->GetPostStepPoint()->GetStepStatus() == fGeomBoundary;
 
  G4int trkid        = aStep->GetTrack()->GetTrackID();
  G4double trklength = aStep->GetStepLength();
  if(weighted)
    trklength *= aStep->GetPreStepPoint()->GetWeight();
 
  if(IsEnter && IsExit)
  {                            // Passed at one step
    fTrackLength = trklength;  // Track length is absolutely given.
    Passed       = true;
  }
  else if(IsEnter)
  {                         // Enter a new geometry
    fCurrentTrkID = trkid;  // Resetting the current track.
    fTrackLength  = trklength;
  }
  else if(IsExit)
  {  // Exit a current geometry
    if(fCurrentTrkID == trkid)
    {
      fTrackLength += trklength;  // Adding the track length to current one,
      Passed = true;              // if the track is same as entered.
    }
  }
  else
  {  // Inside geometry
    if(fCurrentTrkID == trkid)
    {                             // Adding the track length to current one ,
      fTrackLength += trklength;  // if the track is same as entered.
    }
  }
 
  return Passed;
}
 
void G4PSPassageTrackLength::Initialize(G4HCofThisEvent* HCE)
{
  fCurrentTrkID = -1;
 
  EvtMap = new G4THitsMap<G4double>(detector->GetName(), GetName());
  if(HCID < 0)
    HCID = GetCollectionID(0);
  HCE->AddHitsCollection(HCID, EvtMap);
}
 
void G4PSPassageTrackLength::clear() { EvtMap->clear(); }
 
void G4PSPassageTrackLength::PrintAll()
{
  G4cout << " MultiFunctionalDet  " << detector->GetName() << G4endl;
  G4cout << " PrimitiveSenstivity " << GetName() << G4endl;
  G4cout << " Number of entries " << EvtMap->entries() << G4endl;
  for(const auto& [copy, length] : *(EvtMap->GetMap()))
  {
    G4cout << "  copy no.: " << copy
           << "  track length : " << *(length) / GetUnitValue() << " ["
           << GetUnit() << "]" << G4endl;
  }
}
 
void G4PSPassageTrackLength::SetUnit(const G4String& unit)
{
  CheckAndSetUnit(unit, "Length");
}