Acts::DoubletSeedFinder Class Reference

Interface and a collection of standard implementations for a doublet seed finder. More...

#include <Acts/Seeding2/DoubletSeedFinder.hpp>

Classes
struct	Config
	Collection of configuration parameters for the doublet seed finder. More...
struct	DerivedConfig
	Derived configuration for the doublet seed finder using a magnetic field. More...

Public Member Functions
virtual	~DoubletSeedFinder ()=default
virtual const DerivedConfig &	config () const =0
	Returns the configuration of the doublet seed finder.
virtual void	createDoublets (const ConstSpacePointProxy2 &middleSp, const MiddleSpInfo &middleSpInfo, SpacePointContainer2::ConstRange &candidateSps, DoubletsForMiddleSp &compatibleDoublets) const =0
	Creates compatible dublets by applying a series of cuts that can be tested with only two SPs.
virtual void	createDoublets (const ConstSpacePointProxy2 &middleSp, const MiddleSpInfo &middleSpInfo, SpacePointContainer2::ConstSubset &candidateSps, DoubletsForMiddleSp &compatibleDoublets) const =0
	Creates compatible dublets by applying a series of cuts that can be tested with only two SPs.

Static Public Member Functions
static MiddleSpInfo	computeMiddleSpInfo (const ConstSpacePointProxy2 &spM)
	Computes additional quantities from the middle space point which can be reused during doublet finding.
static std::unique_ptr< DoubletSeedFinder >	create (const DerivedConfig &config)
	Creates a new doublet seed finder instance given the configuration.

Detailed Description

Interface and a collection of standard implementations for a doublet seed finder.

Given a starting space point and a collection of candidates, it finds all doublets that satisfy the selection criteria. For the standard implementations the criteria are given by interaction point cuts.

Note

The standard implementations rely on virtual function dispatch which did not turn out to affect the performance after measurement.

Constructor & Destructor Documentation

~DoubletSeedFinder()

virtual Acts::DoubletSeedFinder::~DoubletSeedFinder ( )

virtualdefault

Member Function Documentation

computeMiddleSpInfo()

MiddleSpInfo Acts::DoubletSeedFinder::computeMiddleSpInfo ( const ConstSpacePointProxy2 & spM )

static

Computes additional quantities from the middle space point which can be reused during doublet finding.

Parameters

spM	Middle space point for doublet computation

Returns

MiddleSpInfo structure with computed quantities

config()

virtual const DerivedConfig & Acts::DoubletSeedFinder::config ( ) const

pure virtual

Returns the configuration of the doublet seed finder.

Returns

Reference to the configuration object

create()

std::unique_ptr< DoubletSeedFinder > Acts::DoubletSeedFinder::create ( const DerivedConfig & config )

static

Creates a new doublet seed finder instance given the configuration.

Parameters

config

Configuration for the doublet seed finder

Returns

Unique pointer to new DoubletSeedFinder instance

createDoublets() [1/2]

virtual void Acts::DoubletSeedFinder::createDoublets ( const ConstSpacePointProxy2 & middleSp, const MiddleSpInfo & middleSpInfo, SpacePointContainer2::ConstRange & candidateSps, DoubletsForMiddleSp & compatibleDoublets ) const

pure virtual

Creates compatible dublets by applying a series of cuts that can be tested with only two SPs.

Parameters

middleSp	Space point candidate to be used as middle SP in a seed
middleSpInfo	Information about the middle space point
candidateSps	Range of space points to be used as candidates for middle SP in a seed
compatibleDoublets	Output container for compatible doublets

createDoublets() [2/2]

virtual void Acts::DoubletSeedFinder::createDoublets ( const ConstSpacePointProxy2 & middleSp, const MiddleSpInfo & middleSpInfo, SpacePointContainer2::ConstSubset & candidateSps, DoubletsForMiddleSp & compatibleDoublets ) const

pure virtual

Creates compatible dublets by applying a series of cuts that can be tested with only two SPs.

Parameters

middleSp	Space point candidate to be used as middle SP in a seed
middleSpInfo	Information about the middle space point
candidateSps	Subset of space points to be used as candidates for middle SP in a seed
compatibleDoublets	Output container for compatible doublets