tracking::sim::LdmxMeasurementCalibrator Class Reference

Public Member Functions
	LdmxMeasurementCalibrator ()=default
	Construct an invalid calibrator. Required to allow copying.
	LdmxMeasurementCalibrator (const std::vector< ldmx::Measurement > &measurements)
template<typename traj_t >
void	calibrate (const Acts::GeometryContext &, const Acts::CalibrationContext &, const Acts::SourceLink &genericSourceLink, typename traj_t::TrackStateProxy trackState) const
	Find the measurement corresponding to the source link.
template<typename traj_t >
void	calibrate1d (const Acts::GeometryContext &, const Acts::CalibrationContext &, const Acts::SourceLink &genericSourceLink, typename traj_t::TrackStateProxy trackState) const
	Find the measurement corresponding to the source link.
void	test (const Acts::GeometryContext &, const acts_examples::IndexSourceLink &sourceLink) const

Private Attributes
const std::vector< ldmx::Measurement > *	m_measurements_ = nullptr

Detailed Description

Definition at line 39 of file MeasurementCalibrator.h.

Constructor & Destructor Documentation

LdmxMeasurementCalibrator()

tracking::sim::LdmxMeasurementCalibrator::LdmxMeasurementCalibrator ( const std::vector< ldmx::Measurement > & measurements )

inline

Definition at line 45 of file MeasurementCalibrator.h.

                                                      {
    m_measurements_ = &measurements;
  }

Member Function Documentation

calibrate()

template<typename traj_t >

void tracking::sim::LdmxMeasurementCalibrator::calibrate ( const Acts::GeometryContext & , const Acts::CalibrationContext & , const Acts::SourceLink & genericSourceLink, typename traj_t::TrackStateProxy trackState ) const

inline

Find the measurement corresponding to the source link.

Uses a 2D measurement, cov-matrix and projection

Template Parameters

parameters_t

Track parameters type

Parameters

gctx	The geometry context (unused)
trackState	The track state to calibrate

Definition at line 57 of file MeasurementCalibrator.h.

                                                                  {
    acts_examples::IndexSourceLink source_link{
        genericSourceLink.get<acts_examples::IndexSourceLink>()};
    assert(m_measurements_ and
           "Undefined measurement container in LdmxMeasurementCalibrator");
    assert((source_link.index() < m_measurements_->size()) and
           "Source link index is outside the container bounds in "
           "LdmxMeasurementCalibrator");
 
    auto meas = m_measurements_->at(source_link.index());
    Acts::Vector2 local_pos{meas.getLocalPosition()[0],
                            meas.getLocalPosition()[1]};
    trackState.allocateCalibrated(2);
    auto ts_cal{trackState.template calibrated<2>()};
    auto ts_cal_cov{trackState.template calibratedCovariance<2>()};
    ts_cal.setZero();
    ts_cal.template head<2>() = local_pos;
    Acts::SquareMatrix2 local_cov;
    local_cov.setZero();
    local_cov(0, 0) = meas.getLocalCovariance()[0];
    local_cov(1, 1) = meas.getLocalCovariance()[1];
    ts_cal_cov.setZero();
    // make tsCalCov 2x2 block the local_cov we just set
    ts_cal_cov.block(0, 0, 2, 2) = local_cov;
 
    trackState.setProjectorSubspaceIndices(
        std::array<Acts::BoundIndices, 2>{Acts::eBoundLoc0, Acts::eBoundLoc1});
    trackState.setUncalibratedSourceLink(Acts::SourceLink{genericSourceLink});
  }

Referenced by ecal::EcalTrackFinderProcessor::produce(), and tracking::reco::CKFProcessor::produce().

calibrate1d()

template<typename traj_t >

void tracking::sim::LdmxMeasurementCalibrator::calibrate1d ( const Acts::GeometryContext & , const Acts::CalibrationContext & , const Acts::SourceLink & genericSourceLink, typename traj_t::TrackStateProxy trackState ) const

inline

Find the measurement corresponding to the source link.

Uses a 1D measurement, cov-matrix and projection

Template Parameters

parameters_t

Track parameters type

Parameters

gctx	The geometry context (unused)
trackState	The track state to calibrate

Definition at line 97 of file MeasurementCalibrator.h.

                                                                    {
    acts_examples::IndexSourceLink source_link{
        genericSourceLink.get<acts_examples::IndexSourceLink>()};
 
    assert(m_measurements_ and
           "Undefined measurement container in LdmxMeasurementCalibrator");
    assert((source_link.index() < m_measurements_->size()) and
           "Source link index is outside the container bounds in "
           "LdmxMeasurementCalibrator");
 
    auto meas = m_measurements_->at(source_link.index());
 
    trackState.allocateCalibrated(1);
    auto ts_cal{trackState.template calibrated<1>()};
    auto ts_cal_cov{trackState.template calibratedCovariance<1>()};
 
    ts_cal.setZero();
    ts_cal(0) = (meas.getLocalPosition())[0];
    ts_cal_cov.setZero();
    ts_cal_cov(0, 0) = (meas.getLocalCovariance())[0];
 
    trackState.setProjectorSubspaceIndices(
        std::array<Acts::BoundIndices, 1>{Acts::eBoundLoc0});
    trackState.setUncalibratedSourceLink(Acts::SourceLink{genericSourceLink});
  }

Referenced by tracking::reco::CKFProcessor::produce(), and tracking::reco::GSFProcessor::produce().

test()

void tracking::sim::LdmxMeasurementCalibrator::test ( const Acts::GeometryContext & , const acts_examples::IndexSourceLink & sourceLink ) const

inline

Definition at line 129 of file MeasurementCalibrator.h.

                                                                  {
    auto meas = m_measurements_->at(sourceLink.index());
 
    Acts::Vector3 global_pos{meas.getGlobalPosition()[0],
                             meas.getGlobalPosition()[1],
                             meas.getGlobalPosition()[2]};
    std::cout << "Measurement global_position::\n" << global_pos << std::endl;
 
    Acts::Vector2 local_pos{meas.getLocalPosition()[0],
                            meas.getLocalPosition()[1]};
    std::cout << "Measurement local_position::\n" << local_pos << std::endl;
  }

Member Data Documentation

m_measurements_

const std::vector<ldmx::Measurement>* tracking::sim::LdmxMeasurementCalibrator::m_measurements_ = nullptr

private

Definition at line 145 of file MeasurementCalibrator.h.

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The documentation for this class was generated from the following file:

• Tracking/include/Tracking/Sim/MeasurementCalibrator.h