Contains code that is not considered stable yet and might change. More...

Classes
class	Blueprint
	This class is the top-level entry point to build a tracking geometry using the blueprint building mechanism. More...
class	BlueprintNode
	Base class for all nodes in the blueprint tree. More...
struct	BlueprintOptions
	Options controlling blueprint navigation policies. More...
class	CompositeSpacePointLineFitter
	Generic Implementation to fit a straight line to set of composite space point measurements. More...
class	CompositeSpacePointLineSeeder
	Initial line parameters from a pattern recognition like the Hough transform are often not suitable for a line fit as the resolution of the hough bins usually exceeds the size of the straws. More...
class	ContainerBlueprintNode
	A blueprint node that can contain multiple child volumes. More...
class	CuboidContainerBlueprintNode
	Container blueprint node stacking cuboid volumes. More...
class	CylinderContainerBlueprintNode
	Container blueprint node stacking cylindrical volumes. More...
class	CylindricalSpacePointKDTree
	A cylindrical space point KD-tree used for seeding in a cylindrical detector geometry. More...
class	CylindricalSpacePointKDTreeBuilder
	Builder for cylindrical space point KD-trees. More...
class	Efficiency
	Multi-dimensional efficiency histogram using boost::histogram. More...
struct	GbtsEdge
	Edge between two GBTS nodes with fit parameters. More...
struct	GbtsEdgeState
	Per-edge tracking state used by the GBTS filter. More...
struct	GbtsEtaBin
	Eta-bin container for GBTS nodes and edge data. More...
class	GbtsGeometry
	Geometry helper built from layers and connectors. More...
class	GbtsLayer
	Layer helper with eta-bin access for GBTS seeding. More...
struct	GbtsLayerConnection
	Connection between two GBTS layers with binning information. More...
struct	GbtsLayerConnectionMap
	Loader and container for GBTS layer connection data. More...
struct	GbtsLayerDescription
	Lightweight layer description for GBTS geometry. More...
struct	GbtsNode
	GBTS graph node storing space point properties. More...
class	GbtsNodeStorage
	Storage container for GBTS nodes. More...
class	GbtsRoiDescriptor
	GBTS region-of-interest descriptor with eta/phi/zed bounds. More...
class	GbtsTrackingFilter
	Tracking filter operating on the GBTS edge graph. More...
class	GeometryIdentifierBlueprintNode
	Blueprint node for configuring and applying geometry identifiers to volumes. More...
class	GraphBasedTrackSeeder
	Seed finder implementing the GBTS seeding workflow. More...
class	Gx2Fitter
	Global Chi Square fitter (GX2F) implementation. More...
struct	Gx2FitterExtensions
	Extension struct which holds delegates to customise the GX2F behaviour. More...
struct	Gx2FitterOptions
	Combined options for the Global-Chi-Square fitter. More...
struct	Gx2FitterResult
	Result container for a global chi-square fit. More...
struct	Gx2fSystem
	A container to manage all properties of a gx2f system. More...
class	Histogram
	Multi-dimensional histogram wrapper using boost::histogram for data collection. More...
class	LayerBlueprintNode
	The layer node is essentially an auto-sizing wrapper around a set of surfaces. More...
class	MaterialDesignatorBlueprintNode
	This node type registers material proxies into its child volume during the blueprint construction. More...
class	MultiLayerNavigationPolicy
	A navigation policy that uses grid based navigation for indexed surfaces Navigate through a multilayer structure by creating an artificial path on the grid. More...
class	MultiWireVolumeBuilder
	A class to build multiwire tracking volumes (e.g wire chambers). More...
class	ProfileHistogram
	Multi-dimensional profile histogram using boost::histogram. More...
struct	ScatteringProperties
	A container to store scattering properties for each material surface. More...
class	StaticBlueprintNode
	The static blueprint node wraps a single already-constructred `TrackingVolume`. More...
class	TryAllNavigator
	Alternative `Navigator` which tries all possible intersections. More...

Concepts
concept	CompositeSpacePoint
	Concept definition of the station space points.
concept	CompositeSpacePointCalibrator
	Interface concept for a CompositeSpacePointCalibrator.
concept	CompositeSpacePointContainer
	A station space point container is any std::container over space points.
concept	CompositeSpacePointFastCalibrator
	Interface concept to define the straw measurement calibrator used by the FastStrawLineFitter.
concept	CompositeSpacePointPtr
	Define the space point pointer concept as an ordinary / smart pointer over space points.

Typedefs
using	AxisVariant
	Boost axis variant supporting variable, regular, and log-scale axes with metadata.
using	BoostHist
	Underlying Boost type for histograms.
using	BoostLogAxis
	Logarithmic-scale histogram axis with string metadata.
using	BoostProfileHist
	Underlying Boost type for ProfileHistogram.
using	BoostRegularAxis
	Regular-width histogram axis with string metadata.
using	BoostVariableAxis = boost::histogram::axis::variable<double, std::string>
	Variable-width histogram axis with string metadata.
using	Efficiency1 = Efficiency<1>
	Type aliases for common dimensions.
using	Efficiency2 = Efficiency<2>
	2D efficiency histogram
using	GbtsMlLookupTable = std::vector<std::array<float, 5>>
	Machine learning lookup table for Gbts seeding.
using	Histogram1 = Histogram<1>
	Type aliases for common dimensions.
using	Histogram2 = Histogram<2>
	2D histogram
using	Histogram3 = Histogram<3>
	3D histogram
using	ProfileHistogram1 = ProfileHistogram<1>
	Type aliases for common dimensions.

Enumerations
enum class	GbtsLayerType { Barrel = 0 , Endcap = 1 }
	GBTS layer types.
enum class	GlobalChiSquareFitterError { GlobalChiSquareFitterError::AIsNotInvertible = 1 , GlobalChiSquareFitterError::DidNotConverge = 2 , GlobalChiSquareFitterError::NotEnoughMeasurements = 3 , GlobalChiSquareFitterError::UpdatePushedToNewVolume = 4 }
	Error codes for global chi-square fitter operations. More...

Functions
template<typename track_state_t>
void	addMaterialToGx2fSums (Gx2fSystem &extendedSystem, const std::size_t nMaterialsHandled, const std::unordered_map< GeometryIdentifier, ScatteringProperties > &scatteringMap, const track_state_t &trackState, const Logger &logger)
	Process material and fill the aMatrix and bVector.
template<std::size_t kMeasDim, typename track_state_t>
void	addMeasurementToGx2fSums (Gx2fSystem &extendedSystem, const std::vector< BoundMatrix > &jacobianFromStart, const track_state_t &trackState, const Logger &logger)
	Process measurements and fill the aMatrix and bVector.
void	addMeasurementToGx2fSumsBackend (Gx2fSystem &extendedSystem, const std::vector< BoundMatrix > &jacobianFromStart, const Eigen::MatrixXd &covarianceMeasurement, const BoundVector &predicted, const Eigen::VectorXd &measurement, const Eigen::MatrixXd &projector, const Logger &logger)
	Adds a measurement to the GX2F equation system in a modular backend function.
Eigen::VectorXd	computeGx2fDeltaParams (const Gx2fSystem &extendedSystem)
	Solve the gx2f system to get the delta parameters for the update.
template<TrackProxyConcept track_proxy_t>
std::size_t	countMaterialStates (const track_proxy_t track, const std::unordered_map< GeometryIdentifier, ScatteringProperties > &scatteringMap, const Logger &logger)
	Count the valid material states in a track for scattering calculations.
std::vector< double >	extractBinEdges (const AxisVariant &axis)
	Extract bin edges from an AxisVariant.
template<TrackProxyConcept track_proxy_t>
void	fillGx2fSystem (const track_proxy_t track, Gx2fSystem &extendedSystem, const bool multipleScattering, const std::unordered_map< GeometryIdentifier, ScatteringProperties > &scatteringMap, std::vector< GeometryIdentifier > &geoIdVector, const Logger &logger)
	Fill the GX2F system with data from a track.
std::error_code	make_error_code (Acts::Experimental::GlobalChiSquareFitterError e)
	Converts error code to std::error_code.
Histogram1	projectionX (const Histogram2 &hist2d)
	Project a 2D histogram onto the X axis (axis 0).
Histogram1	projectionY (const Histogram2 &hist2d)
	Project a 2D histogram onto the Y axis (axis 1).
void	updateGx2fCovarianceParams (BoundMatrix &fullCovariancePredicted, Gx2fSystem &extendedSystem)
	Calculate and update the covariance of the fitted parameters.
void	updateGx2fParams (BoundTrackParameters &params, const Eigen::VectorXd &deltaParamsExtended, const std::size_t nMaterialSurfaces, std::unordered_map< GeometryIdentifier, ScatteringProperties > &scatteringMap, const std::vector< GeometryIdentifier > &geoIdVector)
	Update parameters (and scattering angles if applicable).

void	to_json (nlohmann::json &j, const DoubletSeedFinder::Config &config)
	Convert DoubletSeedFinder::Config to JSON.
void	to_json (nlohmann::json &j, const DoubletSeedFinder::DerivedConfig &config)
	Convert DoubletSeedFinder::DerivedConfig to JSON.
void	to_json (nlohmann::json &j, const TripletSeedFinder::Config &config)
	Convert TripletSeedFinder::Config to JSON.
void	to_json (nlohmann::json &j, const TripletSeedFinder::DerivedConfig &config)
	Convert TripletSeedFinder::DerivedConfig to JSON.
void	to_json (nlohmann::json &j, const BroadTripletSeedFilter::Config &config)
	Convert BroadTripletSeedFilter::Config to JSON.
void	to_json (nlohmann::json &j, const CylindricalSpacePointGrid2::Config &config)
	Convert CylindricalSpacePointGrid2::Config to JSON.
void	from_json (const nlohmann::json &j, DoubletSeedFinder::Config &config)
	Convert JSON to DoubletSeedFinder::Config.
void	from_json (const nlohmann::json &j, DoubletSeedFinder::DerivedConfig &config)
	Convert JSON to DoubletSeedFinder::DerivedConfig.
void	from_json (const nlohmann::json &j, TripletSeedFinder::Config &config)
	Convert JSON to TripletSeedFinder::Config.
void	from_json (const nlohmann::json &j, TripletSeedFinder::DerivedConfig &config)
	Convert JSON to TripletSeedFinder::DerivedConfig.
void	from_json (const nlohmann::json &j, BroadTripletSeedFilter::Config &config)
	Convert JSON to BroadTripletSeedFilter::Config.
void	from_json (const nlohmann::json &j, CylindricalSpacePointGrid2::Config &config)
	Convert JSON to CylindricalSpacePointGrid2::Config.

Variables
constexpr std::uint32_t	gbtsNumSegConns = 6
	Number of segment connections.

Detailed Description

Contains code that is not considered stable yet and might change.

Longer desc

Typedef Documentation

◆ AxisVariant

using Acts::Experimental::AxisVariant

Initial value:

 
    boost::histogram::axis::variant<BoostVariableAxis, BoostRegularAxis,
                                    BoostLogAxis>

Boost axis variant supporting variable, regular, and log-scale axes with metadata.

Note: It seems not to be possible to combine compile-time fixed number of axes with boost::histogram::axis::variant. Therefore we use std::vector<AxisVariant> internally.

◆ BoostHist

using Acts::Experimental::BoostHist

Initial value:

decltype(boost::histogram::make_histogram(

std::declval<std::vector<AxisVariant>>()))

Underlying Boost type for histograms.

◆ BoostLogAxis

using Acts::Experimental::BoostLogAxis

Initial value:

boost::histogram::axis::regular<

double, boost::histogram::axis::transform::log, std::string>

Logarithmic-scale histogram axis with string metadata.

◆ BoostProfileHist

using Acts::Experimental::BoostProfileHist

Initial value:

decltype(boost::histogram::make_profile(

std::declval<std::vector<AxisVariant>>()))

Underlying Boost type for ProfileHistogram.

◆ BoostRegularAxis

using Acts::Experimental::BoostRegularAxis

Initial value:

 
    boost::histogram::axis::regular<double, boost::histogram::use_default,
                                    std::string>

Regular-width histogram axis with string metadata.

Function Documentation

◆ extractBinEdges()

std::vector< double > Acts::Experimental::extractBinEdges ( const AxisVariant & axis )

Extract bin edges from an AxisVariant.

Works with all axis types (regular, variable, log) in the variant by accessing the generic axis interface.

Parameters

axis	The axis variant to extract edges from

Returns: Vector of bin edges (size = nBins + 1)

◆ make_error_code()

std::error_code Acts::Experimental::make_error_code ( Acts::Experimental::GlobalChiSquareFitterError e )

Converts error code to std::error_code.

Parameters

e	Error code to convert

Returns: std::error_code for the given error

◆ projectionX()

Histogram1 Acts::Experimental::projectionX ( const Histogram2 & hist2d )

Project a 2D histogram onto the X axis (axis 0).

Parameters

hist2d The 2D histogram to project

Returns: A 1D histogram containing the projection

◆ projectionY()

Histogram1 Acts::Experimental::projectionY ( const Histogram2 & hist2d )

Project a 2D histogram onto the Y axis (axis 1).

Parameters

hist2d The 2D histogram to project

Returns: A 1D histogram containing the projection

Classes

Concepts

Typedefs

Enumerations

Functions

Variables

Detailed Description

Typedef Documentation

◆ AxisVariant

◆ BoostHist

◆ BoostLogAxis

◆ BoostProfileHist

◆ BoostRegularAxis

Function Documentation

◆ extractBinEdges()

◆ make_error_code()

◆ projectionX()

◆ projectionY()