Runge-Kutta-Nystroem stepper based on Eigen implementation for the following ODE: More...

#include <acts/blob/sPHENIX/Core/include/Acts/Propagator/EigenStepper.hpp>

Inheritance diagram for Acts::EigenStepper< extensionlist_t, auctioneer_t >:

Classes
struct	State
	State for track parameter propagation. More...

Public Types
using	Jacobian = BoundMatrix
	Jacobian, Covariance and State definitions.

using	Covariance = BoundSquareMatrix

using	BoundState = std::tuple< BoundTrackParameters, Jacobian, double >

using	CurvilinearState = std::tuple< CurvilinearTrackParameters, Jacobian, double >

Public Member Functions
	EigenStepper (std::shared_ptr< const MagneticFieldProvider > bField, double overstepLimit=100 *UnitConstants::um)
	Constructor requires knowledge of the detector's magnetic field.

State	makeState (std::reference_wrapper< const GeometryContext > gctx, std::reference_wrapper< const MagneticFieldContext > mctx, const BoundTrackParameters &par, double ssize=std::numeric_limits< double >::max()) const

void	resetState (State &state, const BoundVector &boundParams, const BoundSquareMatrix &cov, const Surface &surface, const double stepSize=std::numeric_limits< double >::max()) const
	Resets the state.

Result< Vector3 >	getField (State &state, const Vector3 &pos) const

Vector3	position (const State &state) const

Vector3	direction (const State &state) const

double	qOverP (const State &state) const

double	absoluteMomentum (const State &state) const

Vector3	momentum (const State &state) const

double	charge (const State &state) const

const ParticleHypothesis &	particleHypothesis (const State &state) const

double	time (const State &state) const

Intersection3D::Status	updateSurfaceStatus (State &state, const Surface &surface, Direction navDir, const BoundaryCheck &bcheck, ActsScalar surfaceTolerance=s_onSurfaceTolerance, const Logger &logger=getDummyLogger()) const

template<typename object_intersection_t >
void	updateStepSize (State &state, const object_intersection_t &oIntersection, Direction, bool release=true) const

void	setStepSize (State &state, double stepSize, ConstrainedStep::Type stype=ConstrainedStep::actor, bool release=true) const

double	getStepSize (const State &state, ConstrainedStep::Type stype) const

void	releaseStepSize (State &state) const

std::string	outputStepSize (const State &state) const

double	overstepLimit (const State &state) const

Result< BoundState >	boundState (State &state, const Surface &surface, bool transportCov=true, const FreeToBoundCorrection &freeToBoundCorrection=FreeToBoundCorrection(false)) const
	This transports (if necessary) the covariance to the surface and creates a bound state. It does not check if the transported state is at the surface, this needs to be guaranteed by the propagator.

CurvilinearState	curvilinearState (State &state, bool transportCov=true) const
	This transports (if necessary) the covariance to the current position and creates a curvilinear state.

void	update (State &state, const FreeVector &freeParams, const BoundVector &boundParams, const Covariance &covariance, const Surface &surface) const

void	update (State &state, const Vector3 &uposition, const Vector3 &udirection, double qOverP, double time) const

void	transportCovarianceToCurvilinear (State &state) const

void	transportCovarianceToBound (State &state, const Surface &surface, const FreeToBoundCorrection &freeToBoundCorrection=FreeToBoundCorrection(false)) const

template<typename propagator_state_t , typename navigator_t >
Result< double >	step (propagator_state_t &state, const navigator_t &navigator) const

void	setIdentityJacobian (State &state) const

Protected Attributes
std::shared_ptr< const MagneticFieldProvider >	m_bField
	Magnetic field inside of the detector.

double	m_overstepLimit
	Overstep limit.

Detailed Description

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>
class Acts::EigenStepper< extensionlist_t, auctioneer_t >

Runge-Kutta-Nystroem stepper based on Eigen implementation for the following ODE:

r = (x,y,z) ... global position T = (Ax,Ay,Az) ... momentum direction (normalized)

dr/ds = T dT/ds = q/p * (T x B)

with s being the arc length of the track, q the charge of the particle, p the momentum magnitude and B the magnetic field

Definition at line 49 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 49 of file EigenStepper.hpp

Member Typedef Documentation

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

using Acts::EigenStepper< extensionlist_t, auctioneer_t >::BoundState = std::tuple<BoundTrackParameters, Jacobian, double>

Definition at line 54 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 54 of file EigenStepper.hpp

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

using Acts::EigenStepper< extensionlist_t, auctioneer_t >::Covariance = BoundSquareMatrix

Definition at line 53 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 53 of file EigenStepper.hpp

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

using Acts::EigenStepper< extensionlist_t, auctioneer_t >::CurvilinearState = std::tuple<CurvilinearTrackParameters, Jacobian, double>

Definition at line 56 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 56 of file EigenStepper.hpp

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

using Acts::EigenStepper< extensionlist_t, auctioneer_t >::Jacobian = BoundMatrix

Jacobian, Covariance and State definitions.

Definition at line 52 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 52 of file EigenStepper.hpp

Constructor & Destructor Documentation

template<typename E , typename A >

Acts::EigenStepper< E, A >::EigenStepper	(	std::shared_ptr< const MagneticFieldProvider >	bField,
		double	overstepLimit = `100 * UnitConstants::um`
	)

Constructor requires knowledge of the detector's magnetic field.

Definition at line 14 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 14 of file EigenStepper.ipp

Member Function Documentation

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

double Acts::EigenStepper< extensionlist_t, auctioneer_t >::absoluteMomentum ( const State & state ) const

inline

Absolute momentum accessor

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 208 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 208 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::particleHypothesis(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::qOverP().

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::momentum().

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template<typename E , typename A >

auto Acts::EigenStepper< E, A >::boundState	(	State &	state,
		const Surface &	surface,
		bool	transportCov = `true`,
		const FreeToBoundCorrection &	freeToBoundCorrection = `FreeToBoundCorrection(false)`
	)		const

This transports (if necessary) the covariance to the surface and creates a bound state. It does not check if the transported state is at the surface, this needs to be guaranteed by the propagator.

Create and return the bound state at the current position

Parameters

[in]	state	State that will be presented as `BoundState`
[in]	surface	The surface to which we bind the state
[in]	transportCov	Flag steering covariance transport
[in]	freeToBoundCorrection	Correction for non-linearity effect during transform from free to bound

Returns

A bound state:

the parameters at the surface
the stepwise jacobian towards it (from last bound)
and the path length (from start - for ordering)

Definition at line 49 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 49 of file EigenStepper.ipp

References Acts::detail::boundState(), filter::state, and writeMapConfig::surface.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE(), and test_component_bound_state().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

double Acts::EigenStepper< extensionlist_t, auctioneer_t >::charge ( const State & state ) const

inline

Charge access

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 222 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 222 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::particleHypothesis(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::qOverP().

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename E , typename A >

auto Acts::EigenStepper< E, A >::curvilinearState	(	State &	state,
		bool	transportCov = `true`
	)		const

This transports (if necessary) the covariance to the current position and creates a curvilinear state.

Create and return a curvilinear state at the current position

Parameters

[in]	state	State that will be presented as `CurvilinearState`
[in]	transportCov	Flag steering covariance transport

Returns

A curvilinear state:

the curvilinear parameters at given position
the stepweise jacobian towards it (from last bound)
and the path length (from start - for ordering)

Definition at line 61 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 61 of file EigenStepper.ipp

References Acts::detail::curvilinearState(), and filter::state.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

Vector3 Acts::EigenStepper< extensionlist_t, auctioneer_t >::direction ( const State & state ) const

inline

Momentum direction accessor

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 196 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 196 of file EigenStepper.hpp

References Acts::eFreeDir0, and Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pars.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::momentum().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

Result<Vector3> Acts::EigenStepper< extensionlist_t, auctioneer_t >::getField	(	State &	state,
		const Vector3 &	pos
	)		const

inline

Get the field for the stepping, it checks first if the access is still within the Cell, and updates the cell if necessary.

Parameters

[in,out]	state	is the propagation state associated with the track the magnetic field cell is used (and potentially updated)
[in]	pos	is the field position

Definition at line 181 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 181 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::fieldCache, and Acts::EigenStepper< extensionlist_t, auctioneer_t >::m_bField.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

double Acts::EigenStepper< extensionlist_t, auctioneer_t >::getStepSize	(	const State &	state,
		ConstrainedStep::Type	stype
	)		const

inline

Get the step size

Parameters

state	[in] The stepping state (thread-local cache)
stype	[in] The step size type to be returned

Definition at line 291 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 291 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::stepSize, and Acts::ConstrainedStep::value().

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template<typename E , typename A >

auto Acts::EigenStepper< E, A >::makeState	(	std::reference_wrapper< const GeometryContext >	gctx,
		std::reference_wrapper< const MagneticFieldContext >	mctx,
		const BoundTrackParameters &	par,
		double	ssize = `std::numeric_limits<double>::max()`
	)		const

Definition at line 19 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 19 of file EigenStepper.ipp

References gctx.

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

Vector3 Acts::EigenStepper< extensionlist_t, auctioneer_t >::momentum ( const State & state ) const

inline

Momentum accessor

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 215 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 215 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::absoluteMomentum(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::direction().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

std::string Acts::EigenStepper< extensionlist_t, auctioneer_t >::outputStepSize ( const State & state ) const

inline

Output the Step Size - single component

Parameters

state [in,out] The stepping state (thread-local cache)

Definition at line 305 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 305 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::stepSize, and Acts::ConstrainedStep::toString().

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

double Acts::EigenStepper< extensionlist_t, auctioneer_t >::overstepLimit ( const State & state ) const

inline

Overstep limit

Parameters

state The stepping state (thread-local cache)

Definition at line 312 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 312 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::m_overstepLimit.

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

const ParticleHypothesis& Acts::EigenStepper< extensionlist_t, auctioneer_t >::particleHypothesis ( const State & state ) const

inline

Particle hypothesis

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 229 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 229 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::particleHypothesis.

Referenced by Acts::EigenStepper< extensionlist_t, auctioneer_t >::absoluteMomentum(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::charge().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

Vector3 Acts::EigenStepper< extensionlist_t, auctioneer_t >::position ( const State & state ) const

inline

Global particle position accessor

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 189 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 189 of file EigenStepper.hpp

References Acts::eFreePos0, and Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pars.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

double Acts::EigenStepper< extensionlist_t, auctioneer_t >::qOverP ( const State & state ) const

inline

QoP direction accessor

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 203 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 203 of file EigenStepper.hpp

References Acts::eFreeQOverP, and Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pars.

Referenced by Acts::EigenStepper< extensionlist_t, auctioneer_t >::absoluteMomentum(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::charge().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

void Acts::EigenStepper< extensionlist_t, auctioneer_t >::releaseStepSize ( State & state ) const

inline

Release the Step size

Parameters

state [in,out] The stepping state (thread-local cache)

Definition at line 298 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 298 of file EigenStepper.hpp

References Acts::ConstrainedStep::actor, Acts::ConstrainedStep::release(), and Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::stepSize.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename E , typename A >

void Acts::EigenStepper< E, A >::resetState	(	State &	state,
		const BoundVector &	boundParams,
		const BoundSquareMatrix &	cov,
		const Surface &	surface,
		const double	stepSize = `std::numeric_limits<double>::max()`
	)		const

Resets the state.

Parameters

[in,out]	state	State of the stepper
[in]	boundParams	Parameters in bound parametrisation
[in]	cov	Covariance matrix
[in]	surface	The reference surface of the bound parameters
[in]	stepSize	Step size

Definition at line 27 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 27 of file EigenStepper.ipp

References Acts::Surface::boundToFreeJacobian(), Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::derivative, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::geoContext, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacobian, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacToGlobal, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacTransport, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pathAccumulated, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::stepSize, Acts::detail::transformBoundToFreeParameters(), and Acts::KalmanVertexTrackUpdater::update().

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename E , typename A >

void Acts::EigenStepper< E, A >::setIdentityJacobian ( State & state ) const

Method that reset the Jacobian to the Identity for when no bound state are available

Parameters

[in,out] state State of the stepper

Definition at line 274 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 274 of file EigenStepper.ipp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacobian.

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

void Acts::EigenStepper< extensionlist_t, auctioneer_t >::setStepSize	(	State &	state,
		double	stepSize,
		ConstrainedStep::Type	stype = `ConstrainedStep::actor`,
		bool	release = `true`
	)		const

inline

Set Step size - explicitly with a double

Parameters

state	[in,out] The stepping state (thread-local cache)
stepSize	[in] The step size value
stype	[in] The step size type to be set
release	[in] Do we release the step size?

Definition at line 280 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 280 of file EigenStepper.hpp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::previousStepSize, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::stepSize, Acts::ConstrainedStep::update(), and Acts::ConstrainedStep::value().

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename E , typename A >

template<typename propagator_state_t , typename navigator_t >

Acts::Result< double > Acts::EigenStepper< E, A >::step	(	propagator_state_t &	state,
		const navigator_t &	navigator
	)		const

Perform a Runge-Kutta track parameter propagation step

Parameters

[in,out]	state	the propagation state
[in]	navigator	the navigator of the propagation

Note: The state contains the desired step size. It can be negative during backwards track propagation, and since we're using an adaptive algorithm, it can be modified by the stepper class during propagation.

Definition at line 112 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 112 of file EigenStepper.ipp

References Acts::UnitConstants::e, Acts::eFreeDir0, Acts::eFreePos0, f, ckf::field, h, h2, Acts::UnitConstants::min, Acts::Test::pos, and position.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE(), test_component_bound_state(), test_multi_stepper_surface_status_update(), and test_multi_stepper_vs_eigen_stepper().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

double Acts::EigenStepper< extensionlist_t, auctioneer_t >::time ( const State & state ) const

inline

Time access

Parameters

state [in] The stepping state (thread-local cache)

Definition at line 236 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 236 of file EigenStepper.hpp

References Acts::eFreeTime, and Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pars.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename E , typename A >

void Acts::EigenStepper< E, A >::transportCovarianceToBound	(	State &	state,
		const Surface &	surface,
		const FreeToBoundCorrection &	freeToBoundCorrection = `FreeToBoundCorrection(false)`
	)		const

Method for on-demand transport of the covariance to a new curvilinear frame at current position, or direction of the state

Template Parameters

surface_t the Surface type

Parameters

[in,out]	state	State of the stepper
[in]	surface	is the surface to which the covariance is forwarded to
[in]	freeToBoundCorrection	Correction for non-linearity effect during transform from free to bound

Note: no check is done if the position is actually on the surface

Definition at line 101 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 101 of file EigenStepper.ipp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::cov, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::derivative, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::geoContext, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacobian, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacToGlobal, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacTransport, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pars, writeMapConfig::surface, and Acts::detail::transportCovarianceToBound().

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename E , typename A >

void Acts::EigenStepper< E, A >::transportCovarianceToCurvilinear ( State & state ) const

Method for on-demand transport of the covariance to a new curvilinear frame at current position, or direction of the state

Parameters

[in,out] state State of the stepper

Definition at line 93 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 93 of file EigenStepper.ipp

References Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::cov, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::derivative, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacobian, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacToGlobal, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacTransport, and Acts::detail::transportCovarianceToCurvilinear().

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE(), and test_multi_stepper_vs_eigen_stepper().

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template<typename E , typename A >

void Acts::EigenStepper< E, A >::update	(	State &	state,
		const FreeVector &	freeParams,
		const BoundVector &	boundParams,
		const Covariance &	covariance,
		const Surface &	surface
	)		const

Method to update a stepper state to the some parameters

Parameters

[in,out]	state	State object that will be updated
[in]	freeParams	Free parameters that will be written into `state`
[in]	boundParams	Corresponding bound parameters used to update jacToGlobal in `state`
[in]	covariance	The covariance that will be written into `state`
[in]	surface	The surface used to update the jacToGlobal

Definition at line 71 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 71 of file EigenStepper.ipp

References Acts::Surface::boundToFreeJacobian(), Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::cov, covariance(), Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::geoContext, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::jacToGlobal, and Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pars.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename E , typename A >

void Acts::EigenStepper< E, A >::update	(	State &	state,
		const Vector3 &	uposition,
		const Vector3 &	udirection,
		double	qOverP,
		double	time
	)		const

Method to update the stepper state

Parameters

[in,out]	state	State object that will be updated
[in]	uposition	the updated position
[in]	udirection	the updated direction
[in]	qOverP	the updated qOverP value
[in]	time	the updated time value

Definition at line 83 of file EigenStepper.ipp.

View newest version in sPHENIX GitHub at line 83 of file EigenStepper.ipp

References Acts::eFreeDir0, Acts::eFreePos0, Acts::eFreeQOverP, Acts::eFreeTime, Acts::EigenStepper< extensionlist_t, auctioneer_t >::State::pars, and Acts::Test::time.

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

template<typename object_intersection_t >

void Acts::EigenStepper< extensionlist_t, auctioneer_t >::updateStepSize	(	State &	state,
		const object_intersection_t &	oIntersection,
		Direction	,
		bool	release = `true`
	)		const

inline

Update step size

This method intersects the provided surface and update the navigation step estimation accordingly (hence it changes the state). It also returns the status of the intersection to trigger onSurface in case the surface is reached.

Parameters

state	[in,out] The stepping state (thread-local cache)
oIntersection	[in] The ObjectIntersection to layer, boundary, etc
release	[in] boolean to trigger step size release

Definition at line 269 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 269 of file EigenStepper.hpp

References filter::state.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE().

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template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

Intersection3D::Status Acts::EigenStepper< extensionlist_t, auctioneer_t >::updateSurfaceStatus	(	State &	state,
		const Surface &	surface,
		Direction	navDir,
		const BoundaryCheck &	bcheck,
		ActsScalar	surfaceTolerance = `s_onSurfaceTolerance`,
		const Logger &	logger = `getDummyLogger()`
	)		const

inline

Update surface status

It checks the status to the reference surface & updates the step size accordingly

Parameters

[in,out]	state	The stepping state (thread-local cache)
[in]	surface	The surface provided
[in]	navDir	The navigation direction
[in]	bcheck	The boundary check for this status update
[in]	surfaceTolerance	Surface tolerance used for intersection
[in]	logger	A `Logger` instance

Definition at line 249 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 249 of file EigenStepper.hpp

References logger(), Acts::Test::navDir, filter::state, and writeMapConfig::surface.

Referenced by Acts::Test::BOOST_AUTO_TEST_CASE(), and test_component_bound_state().

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Member Data Documentation

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

std::shared_ptr<const MagneticFieldProvider> Acts::EigenStepper< extensionlist_t, auctioneer_t >::m_bField

protected

Magnetic field inside of the detector.

Definition at line 417 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 417 of file EigenStepper.hpp

Referenced by Acts::EigenStepper< extensionlist_t, auctioneer_t >::getField().

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>

double Acts::EigenStepper< extensionlist_t, auctioneer_t >::m_overstepLimit

protected

Overstep limit.

Definition at line 420 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 420 of file EigenStepper.hpp

Referenced by Acts::EigenStepper< extensionlist_t, auctioneer_t >::overstepLimit().

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

acts/blob/sPHENIX/Core/include/Acts/Propagator/EigenStepper.hpp
acts/blob/sPHENIX/Core/include/Acts/Propagator/EigenStepper.ipp

Classes

Public Types

Public Member Functions

Protected Attributes

Detailed Description

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer> class Acts::EigenStepper< extensionlist_t, auctioneer_t >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>
class Acts::EigenStepper< extensionlist_t, auctioneer_t >