Acts::TrackContainer< track_container_t, traj_t, holder_t > Class Template Reference

Track container interface class. More...

#include <Acts/EventData/TrackContainer.hpp>

Public Types
using	const_iterator
	Type alias for const iterator over tracks in container.
using	ConstTrackProxy
	Alias for the const version of a track proxy, with the same backends as this container.
using	ConstTrackStateProxy
	Type alias for const track state proxy from multi-trajectory.
using	IndexType = TrackIndexType
	The index type of the track container, taken from the container backend.
using	iterator
	Type alias for mutable iterator over tracks in container.
using	size_type = IndexType
	Type alias for size type of track container.
using	TrackContainerBackend = track_container_t
	Type alias for track container backend type.
using	TrackProxy
	Alias for the mutable version of a track proxy, with the same backends as this container.
using	TrackStateContainerBackend = traj_t
	Type alias for track state container backend type.
using	TrackStateProxy = typename MultiTrajectory<traj_t>::TrackStateProxy
	Type alias for mutable track state proxy from multi-trajectory.

Public Member Functions
void	clear ()
	Clear the content of the track container.
constexpr IndexType	size () const
	Get the size (number of tracks) of the track container.
TrackContainer construction
Constructors for the track container by using a set of backends (track + track state). The container can either take ownership of the backends or just hold references to them. This is driven by the holder_t template parameter, where you can also supply a custom holder type. Template deduction is used to try to guess the correct holder type.
	TrackContainer (holder_t< track_container_t > container, holder_t< traj_t > traj)
	Constructor from a track container backend and a track state container backend.
	TrackContainer (auto &container, auto &traj)
	Constructor from references to a track container backend and to a track state container backend.
	TrackContainer (const auto &container, const auto &traj)
	Constructor from const references to a track container backend and to a track state container backend.
TrackContainer track (proxy) access and manipulation
These methods allow accessing tracks, i.e. adding or retrieving a track proxy that points at a specific track in the container.
ConstTrackProxy	getTrack (IndexType itrack) const
	Get a const track proxy for a track index.
TrackProxy	getTrack (IndexType itrack)
	Get a mutable track proxy for a track index.
ConstTrackProxy	at (IndexType itrack) const
	Get a const track proxy for a track index.
TrackProxy	at (IndexType itrack)
	Get a mutable track proxy for a track index.
IndexType	addTrack ()
	Add a track to the container.
TrackProxy	makeTrack ()
	Add a track to the container and return a track proxy to it This effectively calls addTrack and getTrack.
void	removeTrack (IndexType itrack)
	Remove a track at index itrack from the container.
iterator	begin ()
	Get a mutable iterator to the first track in the container.
iterator	end ()
	Get a past-the-end iterator for this container.
const_iterator	begin () const
	Get an const iterator to the first track in the container.
const_iterator	end () const
	Get a past-the-end iterator for this container.
TrackContainer column management
TrackContainer can manage a set of common static columns, and dynamic columns that can be added at runtime. This set of methods allows you to manage the dynamic columns.
template<typename T> requires (!ReadOnly)
constexpr void	addColumn (std::string_view key)
	Add a dynamic column to the track container.
constexpr bool	hasColumn (const std::string &key) const
	Check if this track container has a specific dynamic column.
constexpr bool	hasColumn (HashedString key) const
	Check if a this track container has a specific dynamic column.
template<typename other_track_container_t> requires (!ReadOnly)
void	ensureDynamicColumns (const other_track_container_t &other)
	Helper function to make this track container match the dynamic columns of another one.
TrackContainer backend access
These methods allow accessing the backend of the track container. In most cases, this is not necessary for interacting with the container.
auto &	container ()
	Get a mutable reference to the track container backend.
const auto &	container () const
	Get a const reference to the track container backend.
auto &	trackStateContainer ()
	Get a mutable reference to the track state container backend.
auto &	trackStateContainerHolder ()
	Retrieve the holder of the track state container.
const auto &	trackStateContainer () const
	Get a const reference to the track state container backend.
const auto &	trackStateContainerHolder () const
	Retrieve the holder of the track state container.

Static Public Attributes
static constexpr IndexType	kInvalid = kTrackIndexInvalid
	Sentinel value that indicates an invalid index.
static constexpr bool	ReadOnly
	Indicates if this track container is read-only, or if it can be modified.
static constexpr bool	TrackStateReadOnly
	Indicates if the track state container is read-only, or if it can be modified.

Protected Member Functions
template<typename T> requires (!ReadOnly)
constexpr T &	component (HashedString key, IndexType itrack)
	Get mutable reference to track component using runtime key.
template<typename T>
constexpr const T &	component (HashedString key, IndexType itrack) const
	Get const reference to track component using runtime key.
template<typename T, HashedString key> requires (!ReadOnly)
constexpr T &	component (IndexType itrack)
	Get mutable reference to track component using compile-time key.
template<typename T, HashedString key>
constexpr const T &	component (IndexType itrack) const
	Get const reference to track component using compile-time key.
constexpr TrackProxy::Covariance	covariance (IndexType itrack)
	Get mutable covariance matrix for a track.
constexpr ConstTrackProxy::ConstCovariance	covariance (IndexType itrack) const
	Get const covariance matrix for a track.
auto	forwardTrackStateRange (IndexType itrack)
	Get mutable range for iterating track states in forward order.
auto	forwardTrackStateRange (IndexType itrack) const
	Get const range for iterating track states in forward order.
constexpr TrackProxy::Parameters	parameters (IndexType itrack)
	Get mutable parameters for a track.
constexpr ConstTrackProxy::ConstParameters	parameters (IndexType itrack) const
	Get const parameters for a track.
auto	reverseTrackStateRange (IndexType itrack)
	Get mutable range for iterating track states in reverse order.
auto	reverseTrackStateRange (IndexType itrack) const
	Get const range for iterating track states in reverse order.

Detailed Description

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>
requires HolderFor<holder_t, track_container_t> && HolderFor<holder_t, traj_t>
class Acts::TrackContainer< track_container_t, traj_t, holder_t >

Track container interface class.

This type represents a collections of tracks. It uses a backend to store both the actual tracks and the associated track states.

Template Parameters

track_container_t	the track container backend
traj_t	the track state container backend
holder_t	ownership management class for the backend

Member Typedef Documentation

const_iterator

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::const_iterator

Initial value:

 
      detail::ContainerIterator<TrackContainer, ConstTrackProxy, IndexType,
                                true>

Type alias for const iterator over tracks in container.

ConstTrackProxy

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::ConstTrackProxy

Initial value:

 
      Acts::TrackProxy<track_container_t, traj_t, holder_t, true>

Alias for the const version of a track proxy, with the same backends as this container.

ConstTrackStateProxy

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::ConstTrackStateProxy

Initial value:

 
      typename MultiTrajectory<traj_t>::ConstTrackStateProxy

Type alias for const track state proxy from multi-trajectory.

IndexType

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::IndexType = TrackIndexType

The index type of the track container, taken from the container backend.

iterator

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::iterator

Initial value:

 
      detail::ContainerIterator<TrackContainer, TrackProxy, IndexType, false>

Type alias for mutable iterator over tracks in container.

size_type

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::size_type = IndexType

Type alias for size type of track container.

TrackContainerBackend

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackContainerBackend = track_container_t

Type alias for track container backend type.

TrackProxy

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackProxy

Initial value:

 
      Acts::TrackProxy<track_container_t, traj_t, holder_t, false>

Alias for the mutable version of a track proxy, with the same backends as this container.

TrackStateContainerBackend

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackStateContainerBackend = traj_t

Type alias for track state container backend type.

TrackStateProxy

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

using Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackStateProxy = typename MultiTrajectory<traj_t>::TrackStateProxy

Type alias for mutable track state proxy from multi-trajectory.

Constructor & Destructor Documentation

TrackContainer() [1/3]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackContainer	(	holder_t< track_container_t >	container,
		holder_t< traj_t >	traj )

Constructor from a track container backend and a track state container backend.

Parameters

container	the track container backend
traj	the track state container backend

TrackContainer() [2/3]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackContainer	(	auto &	container,
		auto &	traj )

Constructor from references to a track container backend and to a track state container backend.

Note

The track container will not assume ownership over the backends in this case. You need to ensure suitable lifetime

Parameters

container	the track container backend
traj	the track state container backend

TrackContainer() [3/3]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackContainer	(	const auto &	container,
		const auto &	traj )

Constructor from const references to a track container backend and to a track state container backend.

Note

The track container will not assume ownership over the backends in this case. You need to ensure suitable lifetime

Parameters

container	the track container backend
traj	the track state container backend

Member Function Documentation

addColumn()

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

template<typename T>
requires (!ReadOnly)

void Acts::TrackContainer< track_container_t, traj_t, holder_t >::addColumn ( std::string_view key )

constexpr

Add a dynamic column to the track container.

Note

Only available if the track container is not read-only

Parameters

key	the name of the column to be added

addTrack()

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

IndexType Acts::TrackContainer< track_container_t, traj_t, holder_t >::addTrack

(

)

Add a track to the container.

Note this only creates the logical track and allocates memory. You can combine this with getTrack to obtain a track proxy

Note

Only available if the track container is not read-only

Returns

the index to the newly added track

at() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

TrackProxy Acts::TrackContainer< track_container_t, traj_t, holder_t >::at

(

IndexType

itrack

)

Get a mutable track proxy for a track index.

Note

Only available if the track container is not read-only

Parameters

itrack

the track index in the container

Returns

A mutable track proxy for the index

at() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

ConstTrackProxy Acts::TrackContainer< track_container_t, traj_t, holder_t >::at

(

IndexType

itrack

)

const

Get a const track proxy for a track index.

Parameters

itrack

the track index in the container

Returns

A const track proxy for the index

begin() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

iterator Acts::TrackContainer< track_container_t, traj_t, holder_t >::begin

(

)

Get a mutable iterator to the first track in the container.

Note

Only available if the track container is not read-only

Returns

a mutable iterator to the first track

begin() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

const_iterator Acts::TrackContainer< track_container_t, traj_t, holder_t >::begin

(

)

const

Get an const iterator to the first track in the container.

Returns

a const iterator to the first track

clear()

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

void Acts::TrackContainer< track_container_t, traj_t, holder_t >::clear

(

)

Clear the content of the track container.

Note

Only available if the track container is not read-only

component() [1/4]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

template<typename T>
requires (!ReadOnly)

T & Acts::TrackContainer< track_container_t, traj_t, holder_t >::component ( HashedString key, IndexType itrack )

constexprprotected

Get mutable reference to track component using runtime key.

Template Parameters

T	Component type to retrieve

Parameters

key	Hashed string key for the component
itrack	Track index to get component for

Returns

Mutable reference to the component of type T

component() [2/4]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

template<typename T>

const T & Acts::TrackContainer< track_container_t, traj_t, holder_t >::component ( HashedString key, IndexType itrack ) const

constexprprotected

Get const reference to track component using runtime key.

Template Parameters

T	Component type to retrieve

Parameters

key	Hashed string key for the component
itrack	Track index to get component for

Returns

Const reference to the component of type T

component() [3/4]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

template<typename T, HashedString key>
requires (!ReadOnly)

T & Acts::TrackContainer< track_container_t, traj_t, holder_t >::component ( IndexType itrack )

constexprprotected

Get mutable reference to track component using compile-time key.

Template Parameters

T	Component type to retrieve
key	Hashed string key for the component

Parameters

itrack

Track index to get component for

Returns

Mutable reference to the component of type T

component() [4/4]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

template<typename T, HashedString key>

const T & Acts::TrackContainer< track_container_t, traj_t, holder_t >::component ( IndexType itrack ) const

constexprprotected

Get const reference to track component using compile-time key.

Template Parameters

T	Component type to retrieve
key	Hashed string key for the component

Parameters

itrack

Track index to get component for

Returns

Const reference to the component of type T

container() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

auto & Acts::TrackContainer< track_container_t, traj_t, holder_t >::container

(

)

Get a mutable reference to the track container backend.

Note

Only available if the track container is not read-only

Returns

a mutable reference to the backend

container() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

const auto & Acts::TrackContainer< track_container_t, traj_t, holder_t >::container

(

)

const

Get a const reference to the track container backend.

Returns

a const reference to the backend

covariance() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

TrackProxy::Covariance Acts::TrackContainer< track_container_t, traj_t, holder_t >::covariance ( IndexType itrack )

constexprprotected

Get mutable covariance matrix for a track.

Parameters

itrack

Track index to get covariance for

Returns

Mutable covariance matrix for the track

covariance() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

ConstTrackProxy::ConstCovariance Acts::TrackContainer< track_container_t, traj_t, holder_t >::covariance ( IndexType itrack ) const

constexprprotected

Get const covariance matrix for a track.

Parameters

itrack

Track index to get covariance for

Returns

Const covariance matrix for the track

end() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

iterator Acts::TrackContainer< track_container_t, traj_t, holder_t >::end

(

)

Get a past-the-end iterator for this container.

Note

Only available if the track container is not read-only

Returns

a past-the-end iterator

end() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

const_iterator Acts::TrackContainer< track_container_t, traj_t, holder_t >::end

(

)

const

Get a past-the-end iterator for this container.

Returns

a past-the-end iterator

ensureDynamicColumns()

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

template<typename other_track_container_t>
requires (!ReadOnly)

void Acts::TrackContainer< track_container_t, traj_t, holder_t >::ensureDynamicColumns

(

const other_track_container_t &

other

)

Helper function to make this track container match the dynamic columns of another one.

This will only work if the track container supports this source, and depends on the implementation details of the dynamic columns of the container

Note

Only available if the track container is not read-only

Template Parameters

other_track_container_t

Type of the other track container

Parameters

other

The other track container

forwardTrackStateRange() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

auto Acts::TrackContainer< track_container_t, traj_t, holder_t >::forwardTrackStateRange ( IndexType itrack )

protected

Get mutable range for iterating track states in forward order.

Parameters

itrack

Track index to get state range for

Returns

Range object for forward iteration over track states from stem to tip

Exceptions

std::invalid_argument

if track has no stem index

forwardTrackStateRange() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

auto Acts::TrackContainer< track_container_t, traj_t, holder_t >::forwardTrackStateRange ( IndexType itrack ) const

protected

Get const range for iterating track states in forward order.

Parameters

itrack

Track index to get state range for

Returns

Const range object for forward iteration over track states from stem to tip

Exceptions

std::invalid_argument

if track has no stem index

getTrack() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

TrackProxy Acts::TrackContainer< track_container_t, traj_t, holder_t >::getTrack

(

IndexType

itrack

)

Get a mutable track proxy for a track index.

Note

Only available if the track container is not read-only

Parameters

itrack

the track index in the container

Returns

A mutable track proxy for the index

getTrack() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

ConstTrackProxy Acts::TrackContainer< track_container_t, traj_t, holder_t >::getTrack

(

IndexType

itrack

)

const

Get a const track proxy for a track index.

Parameters

itrack

the track index in the container

Returns

A const track proxy for the index

hasColumn() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

bool Acts::TrackContainer< track_container_t, traj_t, holder_t >::hasColumn ( const std::string & key ) const

constexpr

Check if this track container has a specific dynamic column.

Parameters

key	the key to check for

Returns

true if the column exists

hasColumn() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

bool Acts::TrackContainer< track_container_t, traj_t, holder_t >::hasColumn ( HashedString key ) const

constexpr

Check if a this track container has a specific dynamic column.

Parameters

key	the key to check for

Returns

true if the column exists

makeTrack()

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

TrackProxy Acts::TrackContainer< track_container_t, traj_t, holder_t >::makeTrack

(

)

Add a track to the container and return a track proxy to it This effectively calls addTrack and getTrack.

Note

Only available if the track container is not read-only

Returns

a track proxy to the newly added track

parameters() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

TrackProxy::Parameters Acts::TrackContainer< track_container_t, traj_t, holder_t >::parameters ( IndexType itrack )

constexprprotected

Get mutable parameters for a track.

Parameters

itrack

Track index to get parameters for

Returns

Mutable parameters object for the track

parameters() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

ConstTrackProxy::ConstParameters Acts::TrackContainer< track_container_t, traj_t, holder_t >::parameters ( IndexType itrack ) const

constexprprotected

Get const parameters for a track.

Parameters

itrack

Track index to get parameters for

Returns

Const parameters object for the track

removeTrack()

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

void Acts::TrackContainer< track_container_t, traj_t, holder_t >::removeTrack

(

IndexType

itrack

)

Remove a track at index itrack from the container.

Note

Only available if the track container is not read-only

This invalidates track proxies that point to tracks with larger indices than itrack!

Parameters

itrack

The index of the track to remove

reverseTrackStateRange() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

auto Acts::TrackContainer< track_container_t, traj_t, holder_t >::reverseTrackStateRange ( IndexType itrack )

protected

Get mutable range for iterating track states in reverse order.

Parameters

itrack

Track index to get state range for

Returns

Range object for reverse iteration over track states from tip to stem

reverseTrackStateRange() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

auto Acts::TrackContainer< track_container_t, traj_t, holder_t >::reverseTrackStateRange ( IndexType itrack ) const

protected

Get const range for iterating track states in reverse order.

Parameters

itrack

Track index to get state range for

Returns

Const range object for reverse iteration over track states from tip to stem

size()

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

IndexType Acts::TrackContainer< track_container_t, traj_t, holder_t >::size ( ) const

constexpr

Get the size (number of tracks) of the track container.

Returns

the sixe

trackStateContainer() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

auto & Acts::TrackContainer< track_container_t, traj_t, holder_t >::trackStateContainer

(

)

Get a mutable reference to the track state container backend.

Note

Only available if the track container is not read-only

Returns

a mutable reference to the backend

trackStateContainer() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

const auto & Acts::TrackContainer< track_container_t, traj_t, holder_t >::trackStateContainer

(

)

const

Get a const reference to the track state container backend.

Returns

a const reference to the backend

trackStateContainerHolder() [1/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

auto & Acts::TrackContainer< track_container_t, traj_t, holder_t >::trackStateContainerHolder

(

)

Retrieve the holder of the track state container.

Returns

The track state container including it's holder

Note

Only available if the track container is not read-only

trackStateContainerHolder() [2/2]

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

const auto & Acts::TrackContainer< track_container_t, traj_t, holder_t >::trackStateContainerHolder

(

)

const

Retrieve the holder of the track state container.

Returns

The track state container including it's holder

Member Data Documentation

kInvalid

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

IndexType Acts::TrackContainer< track_container_t, traj_t, holder_t >::kInvalid = kTrackIndexInvalid

staticconstexpr

Sentinel value that indicates an invalid index.

ReadOnly

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

bool Acts::TrackContainer< track_container_t, traj_t, holder_t >::ReadOnly

staticconstexpr

Initial value:

=
      IsReadOnlyTrackContainer<track_container_t>::value

Indicates if this track container is read-only, or if it can be modified.

TrackStateReadOnly

template<TrackContainerBackend track_container_t, CommonMultiTrajectoryBackend traj_t, template< typename > class holder_t = RefHolder>

bool Acts::TrackContainer< track_container_t, traj_t, holder_t >::TrackStateReadOnly

staticconstexpr

Initial value:

=
      IsReadOnlyMultiTrajectory<traj_t>::value

Indicates if the track state container is read-only, or if it can be modified.