proxy::TrackPointWrapper< Data > Class Template Reference

Wrapper for a track data proxy. More...

#include <Track.h>

Public Member Functions
recob::Track const &	track () const
	Returns the track this point belongs to. More...
auto	position () const -> decltype(auto)
auto	momentum () const -> decltype(auto)
art::Ptr< recob::Hit >	hitPtr () const
	Returns the hit associated with the trajectory point. More...
recob::TrackFitHitInfo const *	fitInfoPtr () const
	Returns fit info associated with the trajectory point. More...
auto	index () const -> decltype(auto)
	Returns the index of this point in the trajectory. More...
recob::Hit const *	hit () const
	Returns a pointer to the hit on the trajectory point, if any. More...
Flags interface
auto	flags () const -> decltype(auto)
bool	isPointValid () const
	Returns whether the trajectory point is valid. More...

Protected Member Functions
	TrackPointWrapper ()=default
	TrackPointWrapper (TrackPointWrapper const &)=default
	TrackPointWrapper (TrackPointWrapper &&)=default
TrackPointWrapper &	operator= (TrackPointWrapper const &)=default
TrackPointWrapper &	operator= (TrackPointWrapper &&)=default

Private Types
using	This_t = TrackPointWrapper< Data >
using	Wrapped_t = std::add_const_t< Data >

Private Member Functions
Wrapped_t const &	base () const
template<std::size_t N>
auto	get () const -> decltype(auto)

Static Private Attributes
static constexpr std::size_t	TrackIndex = 0
static constexpr std::size_t	HitIndex = 1
static constexpr std::size_t	FitHitInfoIndex = 2
static constexpr std::size_t	IndexIndex = 3
static constexpr std::size_t	NIndices = 4

Detailed Description

template<typename Data>
class proxy::TrackPointWrapper< Data >

Wrapper for a track data proxy.

Template Parameters

Data	the point data type; requirements are described below

This class provides a user interface to data pertaining a single trajectory point of a recob::Track.

Implementation details

This type wraps a generic data structure with tuple interface. It is expected that the following information is returned:

• pointer to point position as recob::Track::Point_t from std::get<0>(Data const&)
• pointer to momentum at point as recob::Track::Vector_t from std::get<1>(Data const&)
• pointer to flags as recob::Track::PointFlags_t from std::get<2>(Data const&)
• pointer to associated hit as art::Ptr<recob::Hit> from std::get<3>(Data const&)

The "pointers" can be any object returning the required type when dereferenced.

Definition at line 256 of file Track.h.

Member Typedef Documentation

template<typename Data>

using proxy::TrackPointWrapper< Data >::This_t = TrackPointWrapper<Data>

private

Definition at line 588 of file Track.h.

template<typename Data>

using proxy::TrackPointWrapper< Data >::Wrapped_t = std::add_const_t<Data>

private

Definition at line 589 of file Track.h.

Constructor & Destructor Documentation

template<typename Data>

proxy::TrackPointWrapper< Data >::TrackPointWrapper ( )

protecteddefault

template<typename Data>

proxy::TrackPointWrapper< Data >::TrackPointWrapper ( TrackPointWrapper< Data > const &  )

protecteddefault

template<typename Data>

proxy::TrackPointWrapper< Data >::TrackPointWrapper ( TrackPointWrapper< Data > &&  )

protecteddefault

Member Function Documentation

template<typename Data>

Wrapped_t const& proxy::TrackPointWrapper< Data >::base ( ) const

inlineprivate

Definition at line 600 of file Track.h.

      { return reinterpret_cast<Wrapped_t const&>(*this); }

template<typename Data>

recob::TrackFitHitInfo const* proxy::TrackPointWrapper< Data >::fitInfoPtr ( ) const

inline

Returns fit info associated with the trajectory point.

Returns

a pointer to the fit info, or nullptr if not merged in proxy

If the track proxy this point comes from had no fit information, nullptr is returned. The fit information is extracted using the tag in proxy::Tracks::TrackFitHitInfoTag.

Definition at line 664 of file Track.h.

      { return get<FitHitInfoIndex>(); }

template<typename Data>

auto proxy::TrackPointWrapper< Data >::flags ( ) const -> decltype(auto)

inline

Returns the flags associated with the trajectory point.

See also

recob::Track::FlagsAtPoint()

Definition at line 636 of file Track.h.

      { return track().Trajectory().FlagsAtPoint(index()); }

template<typename Data>

template<std::size_t N>

auto proxy::TrackPointWrapper< Data >::get ( ) const -> decltype(auto)

inlineprivate

Definition at line 604 of file Track.h.

{ return std::get<N>(base()); }

template<typename Data>

recob::Hit const* proxy::TrackPointWrapper< Data >::hit ( ) const

inline

Returns a pointer to the hit on the trajectory point, if any.

Definition at line 671 of file Track.h.

      { decltype(auto) ptr = hitPtr(); return ptr? ptr.get(): nullptr; }

template<typename Data>

art::Ptr<recob::Hit> proxy::TrackPointWrapper< Data >::hitPtr ( ) const

inline

Returns the hit associated with the trajectory point.

Returns

an art pointer to the hit associated to this point

Definition at line 653 of file Track.h.

{ return get<HitIndex>(); }

template<typename Data>

auto proxy::TrackPointWrapper< Data >::index ( ) const -> decltype(auto)

inline

Returns the index of this point in the trajectory.

Definition at line 668 of file Track.h.

{ return get<IndexIndex   >(); }

template<typename Data>

bool proxy::TrackPointWrapper< Data >::isPointValid ( ) const

inline

Returns whether the trajectory point is valid.

Even if the trajectory point (position and momentum) are not valid, the hit is still associated to the track/tracjectory.

Definition at line 645 of file Track.h.

{ return flags().isPointValid(); }

template<typename Data>

auto proxy::TrackPointWrapper< Data >::momentum ( ) const -> decltype(auto)

inline

Returns the momentum vector of the trajectory point.

See also

recob::Track::MomentumVectorAtPoint()

Definition at line 626 of file Track.h.

      { return track().Trajectory().MomentumVectorAtPoint(index()); }

template<typename Data>

TrackPointWrapper& proxy::TrackPointWrapper< Data >::operator= ( TrackPointWrapper< Data > const &  )

protecteddefault

template<typename Data>

TrackPointWrapper& proxy::TrackPointWrapper< Data >::operator= ( TrackPointWrapper< Data > &&  )

protecteddefault

template<typename Data>

auto proxy::TrackPointWrapper< Data >::position ( ) const -> decltype(auto)

inline

Returns the position of the trajectory point.

See also

recob::Track::LocationAtPoint()

Definition at line 621 of file Track.h.

      { return track().Trajectory().LocationAtPoint(index()); }

template<typename Data>

recob::Track const& proxy::TrackPointWrapper< Data >::track ( ) const

inline

Returns the track this point belongs to.

Definition at line 616 of file Track.h.

      { return *get<TrackIndex>(); }

Member Data Documentation

template<typename Data>

constexpr std::size_t proxy::TrackPointWrapper< Data >::FitHitInfoIndex = 2

staticprivate

Definition at line 593 of file Track.h.

template<typename Data>

constexpr std::size_t proxy::TrackPointWrapper< Data >::HitIndex = 1

staticprivate

Definition at line 592 of file Track.h.

template<typename Data>

constexpr std::size_t proxy::TrackPointWrapper< Data >::IndexIndex = 3

staticprivate

Definition at line 594 of file Track.h.

template<typename Data>

constexpr std::size_t proxy::TrackPointWrapper< Data >::NIndices = 4

staticprivate

Definition at line 595 of file Track.h.

template<typename Data>

constexpr std::size_t proxy::TrackPointWrapper< Data >::TrackIndex = 0

staticprivate

Definition at line 591 of file Track.h.

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

• lardata/lardata/RecoBaseProxy/Track.h