TruthTrackVarSet.cc

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#include <tracking/trackFindingCDC/filters/track/TruthTrackVarSet.h>
 
#include <tracking/trackFindingCDC/mclookup/CDCMCHitLookUp.h>
#include <tracking/trackFindingCDC/mclookup/CDCMCTrackLookUp.h>
#include <tracking/trackFindingCDC/mclookup/CDCMCManager.h>
 
#include <tracking/trackFindingCDC/eventdata/tracks/CDCTrack.h>
#include <tracking/trackFindingCDC/eventdata/hits/CDCWireHit.h>
 
using namespace Belle2;
using namespace TrackFindingCDC;
 
void TruthTrackVarSet::initialize()
{
  CDCMCManager::getInstance().requireTruthInformation();
  Super::initialize();
}
 
void TruthTrackVarSet::beginEvent()
{
  CDCMCManager::getInstance().fill();
  Super::beginEvent();
}
 
bool TruthTrackVarSet::extract(const CDCTrack* track)
{
  if (not track) return false;
 
  // Find the track with the highest number of hits in the segment
  const CDCMCTrackLookUp& mcTrackLookup = CDCMCTrackLookUp::getInstance();
  const CDCMCHitLookUp& hitLookup = CDCMCHitLookUp::getInstance();
 
  ITrackType trackMCMatch = mcTrackLookup.getMCTrackId(track);
  bool trackIsFake = false;
 
  if (trackMCMatch == INVALID_ITRACK) {
    trackIsFake = true;
  } else {
 
    unsigned int numberOfCorrectHits = 0;
    for (const CDCRecoHit3D& recoHit : *track) {
      if (hitLookup.getMCTrackId(recoHit.getWireHit().getHit()) == trackMCMatch) {
        numberOfCorrectHits++;
      }
    }
    if ((double)numberOfCorrectHits / track->size() < 0.8) {
      trackIsFake = 1.0;
    } else {
      trackIsFake = 0.0;
    }
  }
 
  var<named("track_is_fake_truth")>() = trackIsFake;
  var<named("truth")>() = not trackIsFake;
  return true;
}