o2::its::ClusterLines Class Reference

Least-squares vertex fit over a set of lines (the normal equations AX = -B). More...

#include <ClusterLines.h>

Inherits o2::its::LineFit.

Public Member Functions
	GPUhdDefault () ClusterLines()=default
	ClusterLines (gsl::span< const int > lineIndices, gsl::span< const Line > lines)
	Fit over lines[lineIndices[i]]; lineIndices must be sorted and unique.
	GPUhdi () void add(const Line &line)
	Accumulate one line into the normal equations and the time estimate.
	GPUhdi () void addResidual(const Line &line)
	Running-mean update of the RMS2 and average distance about the stored vertex.
	GPUhdi () void addResidual(const Line &line
	Running-mean update about an externally solved vertex.
	Line::getDCAComponents (line, vertex, dca)
	for (int i=0;i< 6;++i)
bool	operator== (const ClusterLines &rhs) const noexcept
Public Member Functions inherited from o2::its::LineFit
	GPUhdi () bool add(const Line &line)
	Accumulate one line.
	GPUhdi () bool solve(float vertex[3]) const
	Solve the symmetric 3x3 system into vertex (= -A^-1 B); false if it is singular.
	GPUhdi () void computeClusterCentroid()
	Solve into the stored vertex, setting the validity flag.
	GPUhdi () bool isValid() const noexcept
	GPUhdi () const float *getVertex() const noexcept
	GPUhdi () int getSize() const noexcept
	GPUhdi () int getNContributors() const noexcept
	GPUhdi () const TimeEstBC &getTimeStamp() const noexcept
	GPUhdi () float getR2() const noexcept
	GPUhdi () float getR() const noexcept
	GPUhdi () const float *getRMS2() const noexcept
	GPUhdi () float getAvgDistance2() const noexcept

Public Attributes
const float	vertex [3]
const float	d2 = Line::getDistance2FromPoint(line, vertex)
	mResidualCount
const float	inv = 1.f / static_cast<float>(mResidualCount)
	mAvgDistance2 = (d2 - mAvgDistance2) / static_cast<float>(mResidualCount)

Additional Inherited Members
Protected Attributes inherited from o2::its::LineFit
double	mA [6] = {0., 0., 0., 0., 0., 0.}
double	mB [3] = {0., 0., 0.}
float	mVertex [3] = {0.f, 0.f, 0.f}
float	mRMS2 [6] = {0.f, 0.f, 0.f, 0.f, 0.f, 0.f}
float	mAvgDistance2 = 0.f
int	mNContributors = 0
bool	mIsValid = false
TimeEstBC	mTime

Detailed Description

Least-squares vertex fit over a set of lines (the normal equations AX = -B).

Definition at line 221 of file ClusterLines.h.

Constructor & Destructor Documentation

ClusterLines()

o2::its::ClusterLines::ClusterLines	(	gsl::span< const int >	lineIndices,
		gsl::span< const Line >	lines
	)

Fit over lines[lineIndices[i]]; lineIndices must be sorted and unique.

Definition at line 81 of file ClusterLines.cxx.

Member Function Documentation

for()

o2::its::ClusterLines::for ( )

inline

Definition at line 253 of file ClusterLines.h.

GPUhdDefault()

o2::its::ClusterLines::GPUhdDefault ( )

default

GPUhdi() [1/3]

o2::its::ClusterLines::GPUhdi ( ) const &

inline

Accumulate one line into the normal equations and the time estimate.

Definition at line 229 of file ClusterLines.h.

GPUhdi() [2/3]

o2::its::ClusterLines::GPUhdi

(

)

const &

Running-mean update about an externally solved vertex.

GPUhdi() [3/3]

o2::its::ClusterLines::GPUhdi ( ) const &

inline

Running-mean update of the RMS2 and average distance about the stored vertex.

Definition at line 243 of file ClusterLines.h.

Line::getDCAComponents()

o2::its::ClusterLines::Line::getDCAComponents	(	line	,
		vertex	,
		dca
	)

operator==()

bool o2::its::ClusterLines::operator== ( const ClusterLines &  rhs ) const

noexcept

Definition at line 98 of file ClusterLines.cxx.

Member Data Documentation

d2

const float o2::its::ClusterLines::d2 = Line::getDistance2FromPoint(line, vertex)

Definition at line 250 of file ClusterLines.h.

inv

const float o2::its::ClusterLines::inv = 1.f / static_cast<float>(mResidualCount)

Definition at line 252 of file ClusterLines.h.

mAvgDistance2

o2::its::ClusterLines::mAvgDistance2 = (d2 - mAvgDistance2) / static_cast<float>(mResidualCount)

Definition at line 256 of file ClusterLines.h.

mResidualCount

o2::its::ClusterLines::mResidualCount

Definition at line 251 of file ClusterLines.h.

vertex

const float o2::its::ClusterLines::vertex[3]

Initial value:

{
    float dca[6]

Definition at line 246 of file ClusterLines.h.

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

• /home/runner/work/AliceO2/AliceO2/Detectors/ITSMFT/ITS/tracking/include/ITStracking/ClusterLines.h
• /home/runner/work/AliceO2/AliceO2/Detectors/ITSMFT/ITS/tracking/src/ClusterLines.cxx