TrkDriftCircleMath::ResidualWithSegment Class Reference

class to calculate residual of a hit with a segment and calculate the local track errors More...

#include <ResidualWithSegment.h>

Inheritance diagram for TrkDriftCircleMath::ResidualWithSegment:

Collaboration diagram for TrkDriftCircleMath::ResidualWithSegment:

Public Member Functions
	ResidualWithSegment (const Segment &segment)
double	trackError2 (const DriftCircle &dc) const
	calculate the track error at the position of a drift circle More...
double	trackError2 (const Cluster &cl) const
	calculate the track error at the position of a cluster More...
double	residual (const LocVec2D &pos) const
double	residual (const DriftCircle &dc) const
double	residual (const Cluster &cl) const
void	set (const Line &line)

Protected Attributes
TransformToLine	m_transToLine

Private Attributes
Line	m_line
double	m_errorY02
double	m_errorPhi2

Detailed Description

class to calculate residual of a hit with a segment and calculate the local track errors

Definition at line 20 of file ResidualWithSegment.h.

Constructor & Destructor Documentation

ResidualWithSegment()

TrkDriftCircleMath::ResidualWithSegment::ResidualWithSegment ( const Segment &  segment )

inline

Definition at line 22 of file ResidualWithSegment.h.

                                                    :
            ResidualWithLine(segment.line()),
            m_line(segment.line()),
            m_errorY02(segment.dy0() * segment.dy0()),
            m_errorPhi2(segment.dtheta() * segment.dtheta()) {}

Member Function Documentation

residual() [1/3]

double TrkDriftCircleMath::ResidualWithLine::residual ( const Cluster &  cl ) const

inlineinherited

Definition at line 25 of file ResidualWithLine.h.

                                                 {
            // the residual of a cluster is calculated from the point of closest approach and
            // the angle of the line with the plane
            double driftRes = residual(cl.position());
            double sinPhi = m_transToLine.toLineRotation().sinphi();
            if (sinPhi < 1e-13) sinPhi = 1e-13;
            return driftRes / sinPhi;
        }

residual() [2/3]

double TrkDriftCircleMath::ResidualWithLine::residual ( const DriftCircle &  dc ) const

inlineinherited

Definition at line 23 of file ResidualWithLine.h.

{ return std::abs(residual(dc.position())) - std::abs(dc.r()); }

residual() [3/3]

double TrkDriftCircleMath::ResidualWithLine::residual ( const LocVec2D &  pos ) const

inlineinherited

Definition at line 21 of file ResidualWithLine.h.

{ return m_transToLine.toLineY(pos); }

set()

void TrkDriftCircleMath::ResidualWithLine::set ( const Line &  line )

inlineinherited

Definition at line 34 of file ResidualWithLine.h.

{ m_transToLine.set(line); }

trackError2() [1/2]

double TrkDriftCircleMath::ResidualWithSegment::trackError2 ( const Cluster &  cl ) const

inline

calculate the track error at the position of a cluster

Definition at line 35 of file ResidualWithSegment.h.

                                                    {
            double yDistToSegment = cl.position().y() - m_line.position().y();
 
            double sinPhi = m_transToLine.toLineRotation().sinphi();
            if (sinPhi < 1e-13) sinPhi = 1e-13;
            double invSinPhi2 = sinPhi * sinPhi;
            invSinPhi2 = 1. / invSinPhi2;
 
            return m_errorY02 * invSinPhi2 + yDistToSegment * yDistToSegment * invSinPhi2 * m_errorPhi2;
        }

trackError2() [2/2]

double TrkDriftCircleMath::ResidualWithSegment::trackError2 ( const DriftCircle &  dc ) const

inline

calculate the track error at the position of a drift circle

Definition at line 29 of file ResidualWithSegment.h.

                                                        {
            LocVec2D posInLineFrame = m_transToLine.toLine(dc.position());
            return m_errorY02 + posInLineFrame.x() * m_errorPhi2;
        }

Member Data Documentation

m_errorPhi2

double TrkDriftCircleMath::ResidualWithSegment::m_errorPhi2

private

Definition at line 49 of file ResidualWithSegment.h.

m_errorY02

double TrkDriftCircleMath::ResidualWithSegment::m_errorY02

private

Definition at line 48 of file ResidualWithSegment.h.

m_line

Line TrkDriftCircleMath::ResidualWithSegment::m_line

private

Definition at line 47 of file ResidualWithSegment.h.

m_transToLine

TransformToLine TrkDriftCircleMath::ResidualWithLine::m_transToLine

protectedinherited

Definition at line 37 of file ResidualWithLine.h.

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

• ResidualWithSegment.h