State for track parameter propagation. More...

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

Collaboration diagram for Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State:

Public Member Functions
	State ()=delete
	Default constructor - deleted.

template<typename parameters_t >
	State (std::reference_wrapper< const GeometryContext > gctx, std::reference_wrapper< const MagneticFieldContext > mctx, const parameters_t &par, NavigationDirection ndir=forward, double ssize=std::numeric_limits< double >::max(), double stolerance=s_onSurfaceTolerance)

Public Attributes
Vector3D	pos = Vector3D(0., 0., 0.)
	Global particle position.

Vector3D	dir = Vector3D(1., 0., 0.)
	Momentum direction (normalized)

double	p = 0.
	Momentum.

double	q = 1.
	The charge.

double	t = 0.
	Propagated time.

NavigationDirection	navDir
	Navigation direction, this is needed for searching.

Jacobian	jacobian = Jacobian::Identity()
	The full jacobian of the transport entire transport.

BoundToFreeMatrix	jacToGlobal = BoundToFreeMatrix::Zero()
	Jacobian from local to the global frame.

FreeMatrix	jacTransport = FreeMatrix::Identity()
	Pure transport jacobian part from runge kutta integration.

FreeVector	derivative = FreeVector::Zero()
	The propagation derivative.

bool	covTransport = false
	Covariance matrix (and indicator) / associated with the initial error on track parameters.

Covariance	cov = Covariance::Zero()

double	pathAccumulated = 0.
	Accummulated path length state.

ConstrainedStep	stepSize {std::numeric_limits<double>::max()}
	Adaptive step size of the runge-kutta integration.

double	previousStepSize = 0.
	Last performed step (for overstep limit calculation)

double	tolerance = s_onSurfaceTolerance
	The tolerance for the stepping.

BField::Cache	fieldCache

std::reference_wrapper< const GeometryContext >	geoContext
	The geometry context.

extensionlist_t	extension
	List of algorithmic extensions.

auctioneer_t	auctioneer
	Auctioneer for choosing the extension.

struct {
Vector3D B_first
	Magnetic field evaulations.

Vector3D B_middle

Vector3D B_last

Vector3D k1
	k_i of the RKN4 algorithm

Vector3D k2

Vector3D k3

Vector3D k4

std::array< double, 4 > kQoP
	k_i elements of the momenta

}	stepData

Detailed Description

template<typename bfield_t, typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>
struct Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State

State for track parameter propagation.

It contains the stepping information and is provided thread local by the propagator

Definition at line 58 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 58 of file EigenStepper.hpp

Constructor & Destructor Documentation

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

Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::State ( )

delete

Default constructor - deleted.

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

template<typename parameters_t >

Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::State	(	std::reference_wrapper< const GeometryContext >	gctx,
		std::reference_wrapper< const MagneticFieldContext >	mctx,
		const parameters_t &	par,
		NavigationDirection	ndir = `forward`,
		double	ssize = `std::numeric_limits<double>::max()`,
		double	stolerance = `s_onSurfaceTolerance`
	)

inlineexplicit

Constructor from the initial track parameters

Parameters

[in]	gctx	is the context object for the geometry
[in]	mctx	is the context object for the magnetic field
[in]	par	The track parameters at start
[in]	ndir	The navigation direciton w.r.t momentum
[in]	ssize	is the maximum step size
[in]	stolerance	is the stepping tolerance

Note: the covariance matrix is copied when needed

Definition at line 73 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 73 of file EigenStepper.hpp

References dir, pos(), and surface().

Here is the call graph for this function:

Member Data Documentation

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

auctioneer_t Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::auctioneer

Auctioneer for choosing the extension.

Definition at line 159 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 159 of file EigenStepper.hpp

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::B_first

Magnetic field evaulations.

Definition at line 164 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 164 of file EigenStepper.hpp

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::B_last

Definition at line 164 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 164 of file EigenStepper.hpp

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::B_middle

Definition at line 164 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 164 of file EigenStepper.hpp

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

Covariance Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::cov = Covariance::Zero()

Definition at line 133 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 133 of file EigenStepper.hpp

Referenced by Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::covarianceTransport(), and Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::update().

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

bool Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::covTransport = false

Covariance matrix (and indicator) / associated with the initial error on track parameters.

Definition at line 132 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 132 of file EigenStepper.hpp

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

FreeVector Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::derivative = FreeVector::Zero()

The propagation derivative.

Definition at line 128 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 128 of file EigenStepper.hpp

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

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::dir = Vector3D(1., 0., 0.)

Momentum direction (normalized)

Definition at line 104 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 104 of file EigenStepper.hpp

Referenced by Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::covarianceTransport(), and Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::update().

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

extensionlist_t Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::extension

List of algorithmic extensions.

Definition at line 156 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 156 of file EigenStepper.hpp

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

BField::Cache Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::fieldCache

This caches the current magnetic field cell and stays (and interpolates) within it as long as this is valid. See step() code for details.

Definition at line 150 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 150 of file EigenStepper.hpp

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

std::reference_wrapper<const GeometryContext> Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::geoContext

The geometry context.

Definition at line 153 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 153 of file EigenStepper.hpp

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

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

Jacobian Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::jacobian = Jacobian::Identity()

The full jacobian of the transport entire transport.

Definition at line 119 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 119 of file EigenStepper.hpp

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

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

BoundToFreeMatrix Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::jacToGlobal = BoundToFreeMatrix::Zero()

Jacobian from local to the global frame.

Definition at line 122 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 122 of file EigenStepper.hpp

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

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

FreeMatrix Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::jacTransport = FreeMatrix::Identity()

Pure transport jacobian part from runge kutta integration.

Definition at line 125 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 125 of file EigenStepper.hpp

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

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::k1

k_i of the RKN4 algorithm

Definition at line 166 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 166 of file EigenStepper.hpp

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::k2

Definition at line 166 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 166 of file EigenStepper.hpp

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::k3

Definition at line 166 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 166 of file EigenStepper.hpp

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::k4

Definition at line 166 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 166 of file EigenStepper.hpp

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

std::array<double, 4> Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::kQoP

k_i elements of the momenta

Definition at line 168 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 168 of file EigenStepper.hpp

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

NavigationDirection Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::navDir

Navigation direction, this is needed for searching.

Definition at line 116 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 116 of file EigenStepper.hpp

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

double Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::p = 0.

Momentum.

Definition at line 107 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 107 of file EigenStepper.hpp

Referenced by Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::covarianceTransport(), and Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::update().

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

double Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::pathAccumulated = 0.

Accummulated path length state.

Definition at line 136 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 136 of file EigenStepper.hpp

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

Vector3D Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::pos = Vector3D(0., 0., 0.)

Global particle position.

Definition at line 101 of file EigenStepper.hpp.

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

Referenced by Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::covarianceTransport(), and Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::update().

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

double Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::previousStepSize = 0.

Last performed step (for overstep limit calculation)

Definition at line 142 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 142 of file EigenStepper.hpp

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

double Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::q = 1.

The charge.

Definition at line 110 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 110 of file EigenStepper.hpp

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

struct { ... } Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::stepData

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

ConstrainedStep Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::stepSize {std::numeric_limits<double>::max()}

Adaptive step size of the runge-kutta integration.

Definition at line 139 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 139 of file EigenStepper.hpp

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

double Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::t = 0.

Propagated time.

Definition at line 113 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 113 of file EigenStepper.hpp

Referenced by Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::covarianceTransport(), and Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::update().

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

double Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State::tolerance = s_onSurfaceTolerance

The tolerance for the stepping.

Definition at line 145 of file EigenStepper.hpp.

View newest version in sPHENIX GitHub at line 145 of file EigenStepper.hpp

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

acts/blob/master/Core/include/Acts/Propagator/EigenStepper.hpp

Public Member Functions

Public Attributes

Detailed Description

template<typename bfield_t, typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer> struct Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State

Constructor & Destructor Documentation

Member Data Documentation

template<typename bfield_t, typename extensionlist_t = StepperExtensionList<DefaultExtension>, typename auctioneer_t = detail::VoidAuctioneer>
struct Acts::EigenStepper< bfield_t, extensionlist_t, auctioneer_t >::State