FallbackLinearizationPointFinder Class Reference

#include <FallbackLinearizationPointFinder.h>

Inheritance diagram for FallbackLinearizationPointFinder:

Public Member Functions
virtual FallbackLinearizationPointFinder *	clone () const
	FallbackLinearizationPointFinder (const ModeFinder3d &m=HsmModeFinder3d())
virtual GlobalPoint	getLinearizationPoint (const std::vector< reco::TransientTrack > &) const
virtual GlobalPoint	getLinearizationPoint (const std::vector< FreeTrajectoryState > &) const
Public Member Functions inherited from LinearizationPointFinder
virtual	~LinearizationPointFinder ()

Private Attributes
ModeFinder3d *	theModeFinder

Detailed Description

A fallback linearization point finder that is used if the 'actual' CrossingPtBasedLinPtFinder fails. Computes the mode based on innermost states.

Definition at line 13 of file FallbackLinearizationPointFinder.h.

Constructor & Destructor Documentation

FallbackLinearizationPointFinder::FallbackLinearizationPointFinder

(

const ModeFinder3d &

m = HsmModeFinder3d()

)

Definition at line 6 of file FallbackLinearizationPointFinder.cc.

Referenced by clone().

                             : theModeFinder ( m.clone() ) {}

Member Function Documentation

virtual FallbackLinearizationPointFinder* FallbackLinearizationPointFinder::clone ( ) const

inlinevirtual

Clone method

Implements LinearizationPointFinder.

Definition at line 20 of file FallbackLinearizationPointFinder.h.

References FallbackLinearizationPointFinder().

  {
    return new FallbackLinearizationPointFinder ( * this );
  };

GlobalPoint FallbackLinearizationPointFinder::getLinearizationPoint ( const std::vector< reco::TransientTrack > &  ) const

virtual

Virtual method returning the Initial Linearization Point as an object of type GlobalPoint

Implements LinearizationPointFinder.

Definition at line 15 of file FallbackLinearizationPointFinder.cc.

References i, theModeFinder, and tmp.

Referenced by CrossingPtBasedLinearizationPointFinder::getLinearizationPoint(), CrossingPtBasedLinearizationPointFinder::useAllTracks(), and CrossingPtBasedLinearizationPointFinder::useFullMatrix().

{
    switch ( tracks.size() )
    {
      case 0:
        return GlobalPoint ( 0.,0.,0. );
      case 1:
        return tracks.begin()->impactPointState().globalPosition();
      default:
      {
        std::vector < std::pair < GlobalPoint, float > > wtracks;
        wtracks.reserve ( tracks.size() - 1 );
        for ( std::vector< reco::TransientTrack >::const_iterator i=tracks.begin(); 
              i!=tracks.end() ; ++i )
        {
            std::pair < GlobalPoint, float > tmp ( 
                i->impactPointState().globalPosition(), 1. );
            wtracks.push_back ( tmp );
        }
        return (*theModeFinder) ( wtracks );
      }
    }
  return GlobalPoint ( 0.,0.,0. );
}

GlobalPoint FallbackLinearizationPointFinder::getLinearizationPoint ( const std::vector< FreeTrajectoryState > &  tracks ) const

virtual

Reimplemented from LinearizationPointFinder.

Definition at line 9 of file FallbackLinearizationPointFinder.cc.

{
  return GlobalPoint(0.,0.,0.);
}

Member Data Documentation

ModeFinder3d* FallbackLinearizationPointFinder::theModeFinder

private

Definition at line 23 of file FallbackLinearizationPointFinder.h.

Referenced by getLinearizationPoint().