Trk::IVertexAnalyticSeedFinder Class Reference

#include <IVertexAnalyticSeedFinder.h>

Inheritance diagram for Trk::IVertexAnalyticSeedFinder:

Collaboration diagram for Trk::IVertexAnalyticSeedFinder:

Public Member Functions
	DeclareInterfaceID (IVertexAnalyticSeedFinder, 1, 0)
virtual std::pair< Amg::Vector3D, Amg::MatrixX >	findAnalyticSeed (const std::vector< const Trk::TrackParameters * > &perigeeList, const xAOD::Vertex *constraint=0) const =0
	Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object, along with a seed width which can be used in the vertex fit. More...
	DeclareInterfaceID (IVertexSeedFinder, 1, 0)
virtual Amg::Vector3D	findSeed (const std::vector< const Trk::Track * > &vectorTrk, const xAOD::Vertex *constraint=0) const =0
	Finds a linearization point out of a vector of tracks and returns it as an Amg::Vector3D object. More...
virtual Amg::Vector3D	findSeed (const std::vector< const Trk::TrackParameters * > &perigeeList, const xAOD::Vertex *constraint=0) const =0
	Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object. More...
virtual Amg::Vector3D	findSeed (const double, const double, const std::vector< const Trk::TrackParameters * > &perigeeList, const xAOD::Vertex *constraint=0) const
	Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object. More...
virtual Amg::Vector3D	findSeed (const double, const double, std::unique_ptr< Trk::IMode3dInfo > &, const std::vector< const Trk::TrackParameters * > &perigeeList, const xAOD::Vertex *constraint=0) const
	Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object. More...
virtual std::vector< Amg::Vector3D >	findMultiSeeds (const std::vector< const Trk::Track * > &vectorTrk, const xAOD::Vertex *constraint=0) const =0
	Finds full vector of linearization points from a vector of tracks and returns it as an Amg::Vector3D object. More...
virtual std::vector< Amg::Vector3D >	findMultiSeeds (const std::vector< const Trk::TrackParameters * > &perigeeList, const xAOD::Vertex *constraint=0) const =0
	Finds full vector of linearization points from a vector of TrackParameters and returns it as an Amg::Vector3D object. More...

Detailed Description

An abstract base class for implementation of Linearization point finders. Calculates the the starting point of the vertex fit given with a set of tracks. Differs from IVertexSeedFinder in that points are calculated using analytic functions and can therefore return more information.

The correct choice of a starting linearization point does influence the precision of the adaptive fits and may influence the convergence time of the Kalman filter. See concrete implementations for more details.

Author

izaac.nosp@m..san.nosp@m.dersw.nosp@m.ood@.nosp@m.cern..nosp@m.ch

Definition at line 34 of file IVertexAnalyticSeedFinder.h.

Member Function Documentation

DeclareInterfaceID() [1/2]

Trk::IVertexAnalyticSeedFinder::DeclareInterfaceID	(	IVertexAnalyticSeedFinder	,
		1	,
		0
	)

DeclareInterfaceID() [2/2]

Trk::IVertexSeedFinder::DeclareInterfaceID ( IVertexSeedFinder  , 1  , 0    )

inherited

findAnalyticSeed()

virtual std::pair<Amg::Vector3D,Amg::MatrixX> Trk::IVertexAnalyticSeedFinder::findAnalyticSeed ( const std::vector< const Trk::TrackParameters * > &  perigeeList, const xAOD::Vertex *  constraint = 0  ) const

pure virtual

Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object, along with a seed width which can be used in the vertex fit.

If you want an additional constraint can be taken into account. Must specify the primary vertex position.

findMultiSeeds() [1/2]

virtual std::vector<Amg::Vector3D> Trk::IVertexSeedFinder::findMultiSeeds ( const std::vector< const Trk::Track * > &  vectorTrk, const xAOD::Vertex *  constraint = 0  ) const

pure virtualinherited

Finds full vector of linearization points from a vector of tracks and returns it as an Amg::Vector3D object.

Intended for seed finders that produce all at once. If you want an additional constraint can be taken into account.

findMultiSeeds() [2/2]

virtual std::vector<Amg::Vector3D> Trk::IVertexSeedFinder::findMultiSeeds ( const std::vector< const Trk::TrackParameters * > &  perigeeList, const xAOD::Vertex *  constraint = 0  ) const

pure virtualinherited

Finds full vector of linearization points from a vector of TrackParameters and returns it as an Amg::Vector3D object.

Intended for seed finders that produce all at once. If you want an additional constraint can be taken into account.

findSeed() [1/4]

virtual Amg::Vector3D Trk::IVertexSeedFinder::findSeed ( const double  , const double  , const std::vector< const Trk::TrackParameters * > &  perigeeList, const xAOD::Vertex *  constraint = 0  ) const

inlinevirtualinherited

Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object.

If you want an additional constraint can be taken into account. Must specify the primary vertex position.

Definition at line 79 of file IVertexSeedFinder.h.

    {
      return findSeed (perigeeList, constraint);
    }

findSeed() [2/4]

virtual Amg::Vector3D Trk::IVertexSeedFinder::findSeed ( const double  , const double  , std::unique_ptr< Trk::IMode3dInfo > &  , const std::vector< const Trk::TrackParameters * > &  perigeeList, const xAOD::Vertex *  constraint = 0  ) const

inlinevirtualinherited

Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object.

If you want an additional constraint can be taken into account. Must specify the primary vertex position. Allows returning additional diagnostic information.

Definition at line 96 of file IVertexSeedFinder.h.

    {
      return findSeed (perigeeList, constraint);
    }

findSeed() [3/4]

virtual Amg::Vector3D Trk::IVertexSeedFinder::findSeed ( const std::vector< const Trk::Track * > &  vectorTrk, const xAOD::Vertex *  constraint = 0  ) const

pure virtualinherited

Finds a linearization point out of a vector of tracks and returns it as an Amg::Vector3D object.

If you want an additional constraint can be taken into account.

findSeed() [4/4]

virtual Amg::Vector3D Trk::IVertexSeedFinder::findSeed ( const std::vector< const Trk::TrackParameters * > &  perigeeList, const xAOD::Vertex *  constraint = 0  ) const

pure virtualinherited

Finds a linearization point out of a vector of TrackParameters and returns it as an Amg::Vector3D object.

If you want an additional constraint can be taken into account.

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

• IVertexAnalyticSeedFinder.h