#include <coresoftware/blob/master/offline/packages/trackbase_historic/ActsTransformations.h>

Public Member Functions
	ActsTransformations ()=default

Acts::BoundSymMatrix	rotateSvtxTrackCovToActs (const SvtxTrack *track, Acts::GeometryContext geoCtxt) const

Acts::BoundSymMatrix	rotateActsCovToSvtxTrack (const Acts::BoundTrackParameters params, Acts::GeometryContext geoCtxt) const
	Same as above, but rotate from Acts basis to global (x,y,z,px,py,pz)

void	setVerbosity (int verbosity)

void	printMatrix (const std::string &message, Acts::BoundSymMatrix matrix) const

void	calculateDCA (const Acts::BoundTrackParameters param, Acts::Vector3D vertex, Acts::BoundSymMatrix cov, Acts::GeometryContext geoCtxt, float &dca3Dxy, float &dca3Dz, float &dca3DxyCov, float &dca3DzCov) const

void	fillSvtxTrackStates (const Trajectory &traj, const size_t &trackTip, SvtxTrack *svtxTrack, Acts::GeometryContext geoContext) const

Acts::Vector3F	getGlobalPositionF (TrkrCluster cluster, ActsSurfaceMaps surfMaps, ActsTrackingGeometry *tGeometry) const

Acts::Vector3D	getGlobalPosition (TrkrCluster cluster, ActsSurfaceMaps surfMaps, ActsTrackingGeometry *tGeometry) const

Surface	getSurface (TrkrCluster cluster, ActsSurfaceMaps surfMaps) const

Private Member Functions
Surface	getSiliconSurface (TrkrDefs::hitsetkey hitsetkey, ActsSurfaceMaps *maps) const

Surface	getTpcSurface (TrkrDefs::hitsetkey hitsetkey, TrkrDefs::subsurfkey surfkey, ActsSurfaceMaps *maps) const

Surface	getMMSurface (TrkrDefs::hitsetkey hitsetkey, ActsSurfaceMaps *maps) const

Private Attributes
int	m_verbosity = 0

Detailed Description

This is a helper class for rotating track covariance matrices to and from the basis that Acts expects. The covariance matrix is nominally given in the global basis (x,y,z,px,py,pz). Acts expects the covariance matrix in a local basis with respect to the given reference point that is provided as an option to the KalmanFitter.

Definition at line 35 of file ActsTransformations.h.

View newest version in sPHENIX GitHub at line 35 of file ActsTransformations.h

Constructor & Destructor Documentation

ActsTransformations::ActsTransformations ( )

default

Member Function Documentation

void ActsTransformations::calculateDCA	(	const Acts::BoundTrackParameters	param,
		Acts::Vector3D	vertex,
		Acts::BoundSymMatrix	cov,
		Acts::GeometryContext	geoCtxt,
		float &	dca3Dxy,
		float &	dca3Dz,
		float &	dca3DxyCov,
		float &	dca3DzCov
	)		const

Calculate the DCA for a given Acts fitted track parameters and vertex

Correct for initial vertex estimation

Definition at line 210 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 210 of file ActsTransformations.cc

References mom, phi, pos(), and r.

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void ActsTransformations::fillSvtxTrackStates	(	const Trajectory &	traj,
		const size_t &	trackTip,
		SvtxTrack *	svtxTrack,
		Acts::GeometryContext	geoContext
	)		const

Only fill the track states with non-outlier measurement

covariance

Definition at line 382 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 382 of file ActsTransformations.cc

References Acts::UnitConstants::cm, SvtxTrack::insert_state(), Acts::MeasurementFlag, momentum, Acts::SingleTrackParameters< ChargePolicy >::position(), SvtxTrackState_v1::set_error(), SvtxTrackState_v1::set_px(), SvtxTrackState_v1::set_py(), SvtxTrackState_v1::set_pz(), SvtxTrackState_v1::set_x(), SvtxTrackState_v1::set_y(), and SvtxTrackState_v1::set_z().

Referenced by PHActsTrkFitter::updateSvtxTrack().

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Acts::Vector3D ActsTransformations::getGlobalPosition	(	TrkrCluster *	cluster,
		ActsSurfaceMaps *	surfMaps,
		ActsTrackingGeometry *	tGeometry
	)		const

If silicon/TPOT, the transform is one-to-one since the surface is planar

Otherwise do the manual calculation Undo the manual calculation that is performed in TpcClusterizer

Definition at line 268 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 268 of file ActsTransformations.cc

References Acts::UnitConstants::cm, ActsTrackingGeometry::geoContext, TrkrCluster::getClusKey(), TrkrCluster::getLocalX(), TrkrCluster::getLocalY(), Acts::MeasurementHelpers::getSurface(), TrkrDefs::getTrkrId(), local, radius, surface(), and TrkrDefs::tpcId.

Referenced by SvtxClusterEval::all_truth_hits_by_nhit(), PHTpcResiduals::calculateTpcResiduals(), PHSiliconTpcTrackMatching::correctTpcClusterZ(), TrackEvaluation::create_cluster(), QAG4SimulationIntt::evaluate_clusters(), QAG4SimulationMvtx::evaluate_clusters(), QAG4SimulationMicromegas::evaluate_clusters(), QAG4SimulationTpc::evaluate_clusters(), SvtxClusterEval::fill_cluster_layer_map(), SvtxEvaluator::fillOutputNtuples(), PHCASeeding::FillTree(), PHSiliconTpcTrackMatching::getBunchCrossing(), PHTpcTrackSeedCircleFit::getGlobalPosition(), DSTEmulator::getGlobalPosition(), PHCASeeding::getGlobalPosition(), PHSimpleKFProp::getGlobalPosition(), SvtxClusterEval::gtrackid_and_layer_by_nhit(), PHActsSiliconSeeding::makeSvtxTracks(), PHActsSiliconSeeding::matchInttClusters(), SvtxClusterEval::max_truth_cluster_by_energy(), SvtxEvaluator::printOutputInfo(), PHTpcTrackSeedCircleFit::process_event(), PHTpcClusterMover::process_event(), PHTpcCentralMembraneClusterizer::process_event(), PHMicromegasTpcTrackMatching::process_event(), PHTpcDeltaZCorrection::process_track(), TpcDirectLaserReconstruction::process_track(), and SvtxClusterEval::reco_cluster_from_truth_cluster().

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Acts::Vector3F ActsTransformations::getGlobalPositionF	(	TrkrCluster *	cluster,
		ActsSurfaceMaps *	surfMaps,
		ActsTrackingGeometry *	tGeometry
	)		const

Definition at line 261 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 261 of file ActsTransformations.cc

Surface ActsTransformations::getMMSurface	(	TrkrDefs::hitsetkey	hitsetkey,
		ActsSurfaceMaps *	maps
	)		const

private

Definition at line 375 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 375 of file ActsTransformations.cc

References ActsSurfaceMaps::mmSurfaceMap.

Surface ActsTransformations::getSiliconSurface	(	TrkrDefs::hitsetkey	hitsetkey,
		ActsSurfaceMaps *	maps
	)		const

private

If it can't be found, return nullptr

Definition at line 343 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 343 of file ActsTransformations.cc

References ActsSurfaceMaps::siliconSurfaceMap.

Surface ActsTransformations::getSurface	(	TrkrCluster *	cluster,
		ActsSurfaceMaps *	surfMaps
	)		const

Definition at line 320 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 320 of file ActsTransformations.cc

References TrkrCluster::getClusKey(), TrkrDefs::getHitSetKeyFromClusKey(), TrkrCluster::getSubSurfKey(), TrkrDefs::getTrkrId(), TrkrDefs::inttId, TrkrDefs::micromegasId, TrkrDefs::mvtxId, and TrkrDefs::tpcId.

Referenced by PHSiliconTpcTrackMatching::correctTpcClusterZ().

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Surface ActsTransformations::getTpcSurface	(	TrkrDefs::hitsetkey	hitsetkey,
		TrkrDefs::subsurfkey	surfkey,
		ActsSurfaceMaps *	maps
	)		const

private

If it can't be found, return nullptr to skip this cluster

Definition at line 358 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 358 of file ActsTransformations.cc

References TrkrDefs::getLayer(), G4TTL::layer, and ActsSurfaceMaps::tpcSurfaceMap.

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void ActsTransformations::printMatrix	(	const std::string &	message,
		Acts::BoundSymMatrix	matrix
	)		const

Definition at line 188 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 188 of file ActsTransformations.cc

Acts::BoundSymMatrix ActsTransformations::rotateActsCovToSvtxTrack	(	const Acts::BoundTrackParameters	params,
		Acts::GeometryContext	geoCtxt
	)		const

Same as above, but rotate from Acts basis to global (x,y,z,px,py,pz)

Covariance is now an 8x8 matrix in basis (x,y,z,time,Tx,Ty,Tz,q/p)

Now rotate to x,y,z, px,py,pz ActsMatrixD is an eigen matrix

Make the xyz transform unity

Convert to sPHENIX units

Definition at line 104 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 104 of file ActsTransformations.cc

References Acts::UnitConstants::cm, Acts::UnitConstants::cm2, Acts::eBoundLoc0, Acts::eBoundLoc1, Acts::eBoundPhi, Acts::eBoundQOverP, Acts::eBoundTheta, and Acts::eBoundTime.

Referenced by PHTpcResiduals::addTrackState(), PHActsVertexPropagator::updateSvtxTrack(), and PHActsTrkFitter::updateSvtxTrack().

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Acts::BoundSymMatrix ActsTransformations::rotateSvtxTrackCovToActs	(	const SvtxTrack *	track,
		Acts::GeometryContext	geoCtxt
	)		const

Rotates an SvtxTrack covariance matrix from (x,y,z,px,py,pz) global cartesian coordinates to (d0, z0, phi, theta, q/p, time) coordinates for Acts. The track fitter performs the fitting with respect to the nominal origin of sPHENIX, so we rotate accordingly

Convert Svtx to mm and GeV units as Acts expects

First we rotate to (x,y,z,time,Tx,Ty,Tz,q/p) to take advantage of the already created Acts rotation matrix from this basis into the Acts local basis We basically go backwards from rotateActsCovToSvtxTrack to get the Acts cov from the SvtxTrack cov

This is going from Acts->Svtx, so we will take the transpose

Make the xyz transform unity

Now take the 8x8 matrix and rotate it to Acts basis

Since we are using the local to global jacobian we do R^TCR instead of RCR^T

Definition at line 16 of file ActsTransformations.cc.

View newest version in sPHENIX GitHub at line 16 of file ActsTransformations.cc

References Acts::UnitConstants::cm, Acts::UnitConstants::cm2, Acts::eBoundLoc0, Acts::eBoundLoc1, Acts::eBoundPhi, Acts::eBoundQOverP, Acts::eBoundTheta, Acts::eBoundTime, SvtxTrack::get_error(), SvtxTrack::get_px(), SvtxTrack::get_py(), and SvtxTrack::get_pz().

Referenced by PHActsInitialVertexFinder::getTrackPointers().

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void ActsTransformations::setVerbosity ( int verbosity )

inline

Definition at line 52 of file ActsTransformations.h.

View newest version in sPHENIX GitHub at line 52 of file ActsTransformations.h

References m_verbosity.

Referenced by PHActsInitialVertexFinder::getTrackPointers(), PHActsVertexPropagator::updateSvtxTrack(), and PHActsTrkFitter::updateSvtxTrack().

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Member Data Documentation

int ActsTransformations::m_verbosity = 0

private

Definition at line 82 of file ActsTransformations.h.

View newest version in sPHENIX GitHub at line 82 of file ActsTransformations.h

Referenced by setVerbosity().

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

coresoftware/blob/master/offline/packages/trackbase_historic/ActsTransformations.h
coresoftware/blob/master/offline/packages/trackbase_historic/ActsTransformations.cc

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation