SVDStateTruthVarSet.cc

/**************************************************************************
 * BASF2 (Belle Analysis Framework 2)                                     *
 * Copyright(C) 2017 - Belle II Collaboration                             *
 *                                                                        *
 * Author: The Belle II Collaboration                                     *
 * Contributors: Nils Braun                                               *
 *                                                                        *
 * This software is provided "as is" without any warranty.                *
 **************************************************************************/
#include <tracking/ckf/svd/filters/states/SVDStateTruthVarSet.h>
 
#include <tracking/mcMatcher/TrackMatchLookUp.h>
#include <tracking/dataobjects/RecoTrack.h>
 
using namespace std;
using namespace Belle2;
using namespace TrackFindingCDC;
 
bool SVDStateTruthVarSet::extract(const BaseSVDStateFilter::Object* pair)
{
  const std::vector<TrackFindingCDC::WithWeight<const CKFToSVDState*>>& previousStates = pair->first;
  CKFToSVDState* state = pair->second;
 
  std::vector<TrackFindingCDC::WithWeight<const CKFToSVDState*>> allStates = previousStates;
  allStates.emplace_back(state, 0);
 
  const RecoTrack* seedTrack = previousStates.front()->getSeed();
  B2ASSERT("Path without seed?", seedTrack);
 
  var<named("truth_event_id")>() = m_eventMetaData->getEvent();
  var<named("truth_seed_number")>() = seedTrack->getArrayIndex();
 
  // Default to 0
  var<named("truth_position_x")>() = 0;
  var<named("truth_position_y")>() = 0;
  var<named("truth_position_z")>() = 0;
  var<named("truth_momentum_x")>() = 0;
  var<named("truth_momentum_y")>() = 0;
  var<named("truth_momentum_z")>() = 0;
  var<named("truth")>() = 0;
 
  if (not m_mcUtil.allStatesCorrect(allStates)) {
    // Keep all variables set to false and return.
    return true;
  }
 
  const std::string& seedTrackStoreArrayName = seedTrack->getArrayName();
 
  TrackMatchLookUp mcCDCMatchLookUp("MCRecoTracks", seedTrackStoreArrayName);
  const RecoTrack* cdcMCTrack = mcCDCMatchLookUp.getRelatedMCRecoTrack(*seedTrack);
 
  var<named("truth")>() = 1;
 
  var<named("truth_position_x")>() = cdcMCTrack->getPositionSeed().X();
  var<named("truth_position_y")>() = cdcMCTrack->getPositionSeed().Y();
  var<named("truth_position_z")>() = cdcMCTrack->getPositionSeed().Z();
  var<named("truth_momentum_x")>() = cdcMCTrack->getMomentumSeed().X();
  var<named("truth_momentum_y")>() = cdcMCTrack->getMomentumSeed().Y();
  var<named("truth_momentum_z")>() = cdcMCTrack->getMomentumSeed().Z();
 
  return true;
}