Trk::TrackFitInputPreparator Namespace Reference

Helpers to transform combinations of tracking input (for example, existing tracks plus additional measurements) into a digestable fitter input: either tracks, measurement-sets or proto-state vectors. More...

Functions
MeasurementSet	stripMeasurements (const Track &, const MeasurementSet &)
	get the MeasurementSet out of a track+measurements combination. More...
PrepRawDataSet	stripPrepRawData (const Track &, const PrepRawDataSet &, const SortInputFlag, const bool)
	create a vector of PrepRawData* from the mixed input of track and single PrepRawData. More...

Detailed Description

Helpers to transform combinations of tracking input (for example, existing tracks plus additional measurements) into a digestable fitter input: either tracks, measurement-sets or proto-state vectors.

Author

Wolfgang Liebig http://consult.cern.ch/xwho/people/54608

Function Documentation

stripMeasurements()

Trk::MeasurementSet Trk::TrackFitInputPreparator::stripMeasurements	(	const Track &	inputTrk,
		const MeasurementSet &	inputMbs
	)

get the MeasurementSet out of a track+measurements combination.

Definition at line 19 of file TrackFitInputPreparator.cxx.

{
  MeasurementSet newMbSet;
  // collect MBs from Track (speed: assume use for extending track at end)
  DataVector<const MeasurementBase>::const_iterator it =
    inputTrk.measurementsOnTrack()->begin();
  for (; it != inputTrk.measurementsOnTrack()->end(); ++it)
    if ((*it))
      newMbSet.push_back(*it);
  // add MBs from input list
  MeasurementSet::const_iterator itSet = inputMbs.begin();
  for (; itSet != inputMbs.end(); ++itSet)
    if ((*itSet))
      newMbSet.push_back(*itSet);
  return newMbSet;
}

stripPrepRawData()

Trk::PrepRawDataSet Trk::TrackFitInputPreparator::stripPrepRawData	(	const Track &	inputTrk,
		const PrepRawDataSet &	inputPrds,
		const SortInputFlag	doSorting,
		const bool	reintegrateOutliers
	)

create a vector of PrepRawData* from the mixed input of track and single PrepRawData.

Switch for applying a sort function as well as re-integration of outliers onto the input track.

Definition at line 42 of file TrackFitInputPreparator.cxx.

{
  // apped PRDs to end of track. For pre-pend make a parameter
  PrepRawDataSet newPrdSet;
 
  // collect PrepRawData pointers from input track ROTs
  TS_iterator it = inputTrk.trackStateOnSurfaces()->begin();
  for (; it != inputTrk.trackStateOnSurfaces()->end(); ++it) {
    if ((*it)->measurementOnTrack() &&
        (!((*it)->type(TrackStateOnSurface::Outlier)) || reintegrateOutliers)) {
 
      const Trk::RIO_OnTrack* rot = nullptr;
      if ((*it)->measurementOnTrack()->type(
              Trk::MeasurementBaseType::RIO_OnTrack)) {
        rot = static_cast<const Trk::RIO_OnTrack*>((*it)->measurementOnTrack());
      }
      if (rot) {
        const PrepRawData* prepRD = rot->prepRawData();
        if (prepRD) {
          newPrdSet.push_back(prepRD);
        }
      }
    }
  }
  Trk::PrepRawDataSet::const_iterator itSet = inputPrds.begin();
  for (; itSet != inputPrds.end(); ++itSet)
    if ((*itSet))
      newPrdSet.push_back(*itSet);
 
  if (doSorting) {
    Trk::PrepRawDataComparisonFunction PRD_CompFunc(
      (*inputTrk.trackParameters()->begin())->position(),
      (*inputTrk.trackParameters()->begin())->momentum());
 
    if (!std::is_sorted(newPrdSet.begin(), newPrdSet.end(), PRD_CompFunc))
      std::sort(newPrdSet.begin(), newPrdSet.end(), PRD_CompFunc);
  }
  return newPrdSet;
}