Acts::SeedFinder< external_spacepoint_t, platform_t > Class Template Reference

#include <acts/blob/sPHENIX/Core/include/Acts/Seeding/SeedFinder.hpp>

Collaboration diagram for Acts::SeedFinder< external_spacepoint_t, platform_t >:

Classes
struct	SeedingState

Public Member Functions
	SeedFinder (const Acts::SeedFinderConfig< external_spacepoint_t > &config)
	~SeedFinder ()=default
template<template< typename...> typename container_t, typename sp_range_t >
void	createSeedsForGroup (const Acts::SeedFinderOptions &options, SeedingState &state, const Acts::SpacePointGrid< external_spacepoint_t > &grid, std::back_insert_iterator< container_t< Seed< external_spacepoint_t >>> outIt, const sp_range_t &bottomSPs, const std::size_t middleSPs, const sp_range_t &topSPs, const Acts::Range1D< float > &rMiddleSPRange) const
template<typename sp_range_t >
std::vector< Seed < external_spacepoint_t > >	createSeedsForGroup (const Acts::SeedFinderOptions &options, const Acts::SpacePointGrid< external_spacepoint_t > &grid, const sp_range_t &bottomSPs, const std::size_t middleSPs, const sp_range_t &topSPs) const
	Compatibility method for the new-style seed finding API.
Disallow default instantiation, copy, assignment
	SeedFinder ()=default
	SeedFinder (const SeedFinder< external_spacepoint_t, platform_t > &)=delete
SeedFinder < external_spacepoint_t, platform_t > &	operator= (const SeedFinder< external_spacepoint_t, platform_t > &)=default

Private Member Functions
template<Acts::SpacePointCandidateType candidateType, typename out_range_t >
void	getCompatibleDoublets (Acts::SpacePointData &spacePointData, const Acts::SeedFinderOptions &options, const Acts::SpacePointGrid< external_spacepoint_t > &grid, boost::container::small_vector< Neighbour< external_spacepoint_t >, 9 > &otherSPsNeighbours, const InternalSpacePoint< external_spacepoint_t > &mediumSP, std::vector< LinCircle > &linCircleVec, out_range_t &outVec, const float deltaRMinSP, const float deltaRMaxSP, const float uIP, const float uIP2, const float cosPhiM, const float sinPhiM) const
template<Acts::DetectorMeasurementInfo detailedMeasurement>
void	filterCandidates (Acts::SpacePointData &spacePointData, const InternalSpacePoint< external_spacepoint_t > &SpM, const Acts::SeedFinderOptions &options, SeedFilterState &seedFilterState, SeedingState &state) const

Private Attributes
Acts::SeedFinderConfig < external_spacepoint_t >	m_config

Detailed Description

template<typename external_spacepoint_t, typename platform_t = void*>
class Acts::SeedFinder< external_spacepoint_t, platform_t >

Definition at line 40 of file SeedFinder.hpp.

View newest version in sPHENIX GitHub at line 40 of file SeedFinder.hpp

Constructor & Destructor Documentation

template<typename external_spacepoint_t, typename platform_t >

Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedFinder

(

const Acts::SeedFinderConfig< external_spacepoint_t > &

config

)

The only constructor. Requires a config object.

Parameters

config

the configuration for the SeedFinder

Definition at line 17 of file SeedFinder.ipp.

View newest version in sPHENIX GitHub at line 17 of file SeedFinder.ipp

References Acts::SeedFinderConfig< SpacePoint >::deltaRMaxBottomSP, Acts::SeedFinderConfig< SpacePoint >::deltaRMaxTopSP, Acts::SeedFinderConfig< SpacePoint >::deltaRMinBottomSP, Acts::SeedFinderConfig< SpacePoint >::deltaRMinTopSP, and Acts::SeedFinderConfig< SpacePoint >::isInInternalUnits.

template<typename external_spacepoint_t, typename platform_t = void*>

Acts::SeedFinder< external_spacepoint_t, platform_t >::~SeedFinder ( )

default

template<typename external_spacepoint_t, typename platform_t = void*>

Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedFinder ( )

default

template<typename external_spacepoint_t, typename platform_t = void*>

Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedFinder ( const SeedFinder< external_spacepoint_t, platform_t > &  )

delete

Member Function Documentation

template<typename external_spacepoint_t, typename platform_t >

template<template< typename...> typename container_t, typename sp_range_t >

void Acts::SeedFinder< external_spacepoint_t, platform_t >::createSeedsForGroup	(	const Acts::SeedFinderOptions &	options,
		SeedingState &	state,
		const Acts::SpacePointGrid< external_spacepoint_t > &	grid,
		std::back_insert_iterator< container_t< Seed< external_spacepoint_t >>>	outIt,
		const sp_range_t &	bottomSPs,
		const std::size_t	middleSPs,
		const sp_range_t &	topSPs,
		const Acts::Range1D< float > &	rMiddleSPRange
	)		const

Create all seeds from the space points in the three iterators. Can be used to parallelize the seed creation

Parameters

options	frequently changing configuration (like beam position)
state	State object that holds memory used
grid	The grid with space points
outIt	Output iterator for the seeds in the group
bottomSPs	group of space points to be used as innermost SP in a seed.
middleSPs	group of space points to be used as middle SP in a seed.
topSPs	group of space points to be used as outermost SP in a seed.
rMiddleSPRange	range object containing the minimum and maximum r for middle SP for a certain z bin.

Note

Ranges must return pointers.

Ranges must be separate objects for each parallel call.

get zBin position of the middle SP

protects against zM at the limit of zBinEdges

Definition at line 40 of file SeedFinder.ipp.

View newest version in sPHENIX GitHub at line 40 of file SeedFinder.ipp

References Acts::detail::Grid< T, Axes >::at(), Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::bottomNeighbours, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::candidates_collector, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::compatBottomSP, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::compatTopSP, distance(), grid(), ambiguity_solver_full_chain::idx, Acts::if(), Acts::SeedFinderOptions::isInInternalUnits, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::linCircleBottom, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::linCircleTop, Acts::Range1D< Type >::max(), Acts::Range1D< Type >::min(), Acts::SeedConfirmationRangeConfig::nTopForLargeR, Acts::SeedConfirmationRangeConfig::nTopForSmallR, Acts::SeedFilterState::nTopSeedConf, Acts::SeedFilterState::numQualitySeeds, ckf::options, Acts::SeedConfirmationRangeConfig::rMaxSeedConf, Acts::SeedFilterState::rMaxSeedConf, Acts::CandidatesForMiddleSp< external_space_point_t >::setMaxElements(), Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::spacePointData, filter::state, and Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::topNeighbours.

Referenced by main(), and PHActsSiliconSeeding::runSeeder().

Here is the call graph for this function:

Here is the caller graph for this function:

template<typename external_spacepoint_t, typename platform_t >

template<typename sp_range_t>

std::vector< Seed< external_spacepoint_t > > Acts::SeedFinder< external_spacepoint_t, platform_t >::createSeedsForGroup	(	const Acts::SeedFinderOptions &	options,
		const Acts::SpacePointGrid< external_spacepoint_t > &	grid,
		const sp_range_t &	bottomSPs,
		const std::size_t	middleSPs,
		const sp_range_t &	topSPs
	)		const

Compatibility method for the new-style seed finding API.

This method models the old-style seeding API where we only need a container for the bottom, middle, and top space points. Also, the results are returned by value instead of inserted into an inserter.

Note

This method is a very simply wrapper around the more modern API.

Warning

The performance of the seeding code is far greater if the new API is used, and this is recommended for all new uses which do not require backwards-compatibility.

Template Parameters

sp_range_t

container type for the seed point collections.

Parameters

options	frequently changing configuration (like beam position)
grid	The grid with space points
bottomSPs	group of space points to be used as innermost SP in a seed.
middleSPs	group of space points to be used as middle SP in a seed.
topSPs	group of space points to be used as outermost SP in a seed.

Returns

a vector of seeds.

Definition at line 802 of file SeedFinder.ipp.

View newest version in sPHENIX GitHub at line 802 of file SeedFinder.ipp

References filter::state.

template<typename external_spacepoint_t, typename platform_t >

template<Acts::DetectorMeasurementInfo detailedMeasurement>

void Acts::SeedFinder< external_spacepoint_t, platform_t >::filterCandidates ( Acts::SpacePointData &  spacePointData, const InternalSpacePoint< external_spacepoint_t > &  SpM, const Acts::SeedFinderOptions &  options, SeedFilterState &  seedFilterState, SeedingState &  state  ) const

inlineprivate

Iterates over the seed candidates tests the compatibility between three SPs and calls for the seed confirmation

Parameters

spacePointData	object containing the spacepoint data
SpM	space point candidate to be used as middle SP in a seed
options	frequently changing configuration (like beam position)
seedFilterState	State object that holds memory used in SeedFilter
state	State object that holds memory used

Definition at line 440 of file SeedFinder.ipp.

View newest version in sPHENIX GitHub at line 440 of file SeedFinder.ipp

References KFPMath::a, A, KFPMath::b, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::candidates_collector, Acts::CandidatesForMiddleSp< external_space_point_t >::clear(), Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::compatBottomSP, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::compatTopSP, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::curvatures, i, Acts::if(), Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::impactParameters, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::linCircleBottom, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::linCircleTop, Acts::SeedFinderOptions::minHelixDiameter2, Acts::SeedFinderOptions::multipleScattering2, Acts::SeedFilterState::numQualitySeeds, Acts::SeedFinderOptions::pTPerHelixRadius, Acts::InternalSpacePoint< SpacePoint >::radius(), Acts::SeedFilterState::rMaxSeedConf, Acts::SeedFinderOptions::sigmapT2perRadius, Acts::Experimental::detail::BlueprintHelper::sort(), Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::spacePointData, filter::state, t, Acts::SeedFinder< external_spacepoint_t, platform_t >::SeedingState::topSpVec, Acts::InternalSpacePoint< SpacePoint >::varianceR(), Acts::InternalSpacePoint< SpacePoint >::varianceZ(), Acts::InternalSpacePoint< SpacePoint >::x(), Acts::xyzCoordinateCheck(), Acts::InternalSpacePoint< SpacePoint >::y(), Acts::InternalSpacePoint< SpacePoint >::z(), and Acts::SeedFilterState::zOrigin.

Here is the call graph for this function:

template<typename external_spacepoint_t, typename platform_t >

template<Acts::SpacePointCandidateType candidateType, typename out_range_t >

void Acts::SeedFinder< external_spacepoint_t, platform_t >::getCompatibleDoublets ( Acts::SpacePointData &  spacePointData, const Acts::SeedFinderOptions &  options, const Acts::SpacePointGrid< external_spacepoint_t > &  grid, boost::container::small_vector< Neighbour< external_spacepoint_t >, 9 > &  otherSPsNeighbours, const InternalSpacePoint< external_spacepoint_t > &  mediumSP, std::vector< LinCircle > &  linCircleVec, out_range_t &  outVec, const float  deltaRMinSP, const float  deltaRMaxSP, const float  uIP, const float  uIP2, const float  cosPhiM, const float  sinPhiM  ) const

inlineprivate

Iterates over dublets and tests the compatibility between them by applying a series of cuts that can be tested with only two SPs

Parameters

spacePointData	object containing the spacepoint data
options	frequently changing configuration (like beam position)
grid	spacepoint grid
otherSPsNeighbours	inner or outer space points to be used in the dublet
mediumSP	space point candidate to be used as middle SP in a seed
linCircleVec	vector containing inner or outer SP parameters after reference frame transformation to the u-v space
outVec	Output object containing top or bottom SPs that are compatible with a certain middle SPs
deltaRMinSP	minimum allowed r-distance between dublet components
deltaRMaxSP	maximum allowed r-distance between dublet components
uIP	minus one over radius of middle SP
uIP2	square of uIP
cosPhiM	ratio between middle SP x position and radius
sinPhiM	ratio between middle SP y position and radius

Definition at line 198 of file SeedFinder.ipp.

View newest version in sPHENIX GitHub at line 198 of file SeedFinder.ipp

References Acts::detail::Grid< T, Axes >::at(), physmon_track_finding_ttbar::deltaR, physmon_track_finding_ttbar::impactMax, Acts::SeedFinderOptions::minHelixDiameter2, Acts::InternalSpacePoint< SpacePoint >::radius(), Acts::SpacePointData::setDeltaR(), Acts::InternalSpacePoint< SpacePoint >::varianceR(), Acts::InternalSpacePoint< SpacePoint >::varianceZ(), Acts::InternalSpacePoint< SpacePoint >::x(), Acts::InternalSpacePoint< SpacePoint >::y(), and Acts::InternalSpacePoint< SpacePoint >::z().

Here is the call graph for this function:

template<typename external_spacepoint_t, typename platform_t = void*>

SeedFinder<external_spacepoint_t, platform_t>& Acts::SeedFinder< external_spacepoint_t, platform_t >::operator= ( const SeedFinder< external_spacepoint_t, platform_t > &  )

default

Member Data Documentation

template<typename external_spacepoint_t, typename platform_t = void*>

Acts::SeedFinderConfig<external_spacepoint_t> Acts::SeedFinder< external_spacepoint_t, platform_t >::m_config

private

Definition at line 177 of file SeedFinder.hpp.

View newest version in sPHENIX GitHub at line 177 of file SeedFinder.hpp

Referenced by Acts::SeedFinder< external_spacepoint_t, Acts::Cuda >::createSeedsForGroup(), and Acts::SeedFinder< external_spacepoint_t, Acts::Cuda >::SeedFinder().

---

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

• acts/blob/sPHENIX/Core/include/Acts/Seeding/SeedFinder.hpp
• acts/blob/sPHENIX/Core/include/Acts/Seeding/SeedFinder.ipp