#include <DCAFitterN.h>

Public Types
enum	BadCovPolicy : uint8_t { Discard = 0 , Override = 1 , OverrideAndFlag = 2 }

enum	FitStatus : uint8_t { None , Converged , MaxIter , NoCrossing , RejRadius , RejTrackX , RejTrackRoughZ , RejChi2Max , FailProp , FailInvCov , FailInvWeight , FailInv2ndDeriv , FailCorrTracks , FailCloserAlt }

Public Member Functions
	DCAFitterN ()=default

	DCAFitterN (float bz, bool useAbsDCA, bool prop2DCA)

	GPUd () const Vec3D &getPCACandidate(int cand=0) const
	< return PCA candidate, by default best on is provided (no check for the index validity)

	GPUd () const auto getPCACandidatePos(int cand=0) const
	return position of quality-ordered candidate in the internal structures

int	getCandidatePosition (int cand=0) const
	return Chi2 at PCA candidate (no check for its validity)

float	getChi2AtPCACandidate (int cand=0) const

	GPUd () bool propagateTracksToVertex(int cand=0)
	check if propagation of tracks to candidate vertex was done

	GPUd () bool isPropagateTracksToVertexDone(int cand=0) const
	check if propagation of tracks to candidate vertex failed

bool	isPropagationFailure (int cand=0) const

Track &	getTrack (int i, int cand=0)

const Track &	getTrack (int i, int cand=0) const
	create parent track param with errors for decay vertex

GPUd() o2 GPUd() o2 GPUd() o2	GPUd () bool recalculatePCAWithErrors(int cand=0)
	< create parent track param w/o errors for decay vertex

	GPUd () MatSym3D calcPCACovMatrix(int cand=0) const

std::array< float, 6 >	calcPCACovMatrixFlat (int cand=0) const

const Track *	getOrigTrackPtr (int i) const

	GPUdi () FitStatus getFitStatus(int cand=0) const noexcept
	return number of iterations during minimization (no check for its validity)

	GPUdi () int getNIterations(int cand=0) const

	GPUdi () void setPropagateToPCA(bool v

	GPUd () void print() const

	GPUdi () int getFitterID() const

	GPUdi () void setFitterID(int i)

	GPUdi () size_t getCallID() const

Static Public Member Functions
static constexpr int	getNProngs ()

Protected Member Functions
	GPUd () bool calcPCACoefs()

	GPUd () bool calcInverseWeight()

	GPUd () void calcResidDerivatives()

	GPUd () void calcResidDerivativesNoErr()

	GPUd () void calcRMatrices()

	GPUd () void calcChi2Derivatives()

	GPUd () void calcChi2DerivativesNoErr()

	GPUd () void calcPCA()

	GPUd () void calcPCANoErr()

	GPUd () void calcTrackResiduals()

	GPUd () void calcTrackDerivatives()

	GPUd () double calcChi2() const

	GPUd () double calcChi2NoErr() const

	GPUd () bool correctTracks(const VecND &corrX)

	GPUd () bool minimizeChi2()

	GPUd () bool minimizeChi2NoErr()

	GPUd () bool roughDZCut() const

	GPUd () bool closerToAlternative() const

GPUd() bool propagateToX(o2 GPUd() bool propagateParamToX(o2	GPUd () static double getAbsMax(const VecND &v)
	track param positions at V0 candidate (no check for the candidate validity)

	GPUdi () const Vec3D &getTrackPos(int i

int class Tr	GPUd () void assign(int i

	assign (i+1, args...)

	GPUdi () void clear()

	GPUdi () static void setTrackPos(Vec3D &pnt

	GPUdi () void clearLogThrottlers()

void	setBadCovPolicy (BadCovPolicy v)

BadCovPolicy	getBadCovPolicy () const

Protected Attributes
int	cand
	track X-param at V0 candidate (no check for the candidate validity)

int class Tr const T &	t

int class Tr const T const Tr &	args

	mOrigTrPtr [i] = &t

const Track &	tr

	pnt [1] = tr.getY()

Detailed Description

template<int N, typename... Args>
class o2::vertexing::DCAFitterN< N, Args >

Definition at line 95 of file DCAFitterN.h.

Member Enumeration Documentation

◆ BadCovPolicy

template<int N, typename... Args>

enum o2::vertexing::DCAFitterN::BadCovPolicy : uint8_t

Enumerator
Discard
Override
OverrideAndFlag

Definition at line 120 of file DCAFitterN.h.

◆ FitStatus

template<int N, typename... Args>

enum o2::vertexing::DCAFitterN::FitStatus : uint8_t

Enumerator
None
Converged
MaxIter
NoCrossing
RejRadius
RejTrackX
RejTrackRoughZ
RejChi2Max
FailProp
FailInvCov
FailInvWeight
FailInv2ndDeriv
FailCorrTracks
FailCloserAlt

Definition at line 126 of file DCAFitterN.h.

Constructor & Destructor Documentation

◆ DCAFitterN() [1/2]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::DCAFitterN ( )

default

◆ DCAFitterN() [2/2]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::DCAFitterN	(	float	bz,
		bool	useAbsDCA,
		bool	prop2DCA
	)

inline

Definition at line 150 of file DCAFitterN.h.

Member Function Documentation

◆ assign()

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::assign	(	i+	1,
		args...
	)

protected

◆ calcPCACovMatrixFlat()

template<int N, typename... Args>

std::array< float, 6 > o2::vertexing::DCAFitterN< N, Args >::calcPCACovMatrixFlat ( int cand = 0 ) const

inline

Definition at line 216 of file DCAFitterN.h.

◆ getBadCovPolicy()

template<int N, typename... Args>

BadCovPolicy o2::vertexing::DCAFitterN< N, Args >::getBadCovPolicy ( ) const

inlineprotected

Definition at line 363 of file DCAFitterN.h.

◆ getCandidatePosition()

template<int N, typename... Args>

int o2::vertexing::DCAFitterN< N, Args >::getCandidatePosition ( int cand = 0 ) const

inline

return Chi2 at PCA candidate (no check for its validity)

Definition at line 165 of file DCAFitterN.h.

◆ getChi2AtPCACandidate()

template<int N, typename... Args>

float o2::vertexing::DCAFitterN< N, Args >::getChi2AtPCACandidate ( int cand = 0 ) const

inline

prepare copies of tracks at the V0 candidate (no check for the candidate validity) must be called before getTrack(i,cand) query

Definition at line 168 of file DCAFitterN.h.

◆ getNProngs()

template<int N, typename... Args>

static constexpr int o2::vertexing::DCAFitterN< N, Args >::getNProngs ( )

inlinestaticconstexpr

Definition at line 147 of file DCAFitterN.h.

◆ getOrigTrackPtr()

template<int N, typename... Args>

const Track * o2::vertexing::DCAFitterN< N, Args >::getOrigTrackPtr ( int i ) const

inline

Definition at line 222 of file DCAFitterN.h.

◆ getTrack() [1/2]

template<int N, typename... Args>

Track & o2::vertexing::DCAFitterN< N, Args >::getTrack	(	int	i,
		int	cand = `0`
	)

inline

Definition at line 182 of file DCAFitterN.h.

◆ getTrack() [2/2]

template<int N, typename... Args>

const Track & o2::vertexing::DCAFitterN< N, Args >::getTrack	(	int	i,
		int	cand = `0`
	)		const

inline

create parent track param with errors for decay vertex

Definition at line 192 of file DCAFitterN.h.

◆ GPUd() [1/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [2/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [3/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

protected

◆ GPUd() [4/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const &

protected

◆ GPUd() [5/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

inlinepure virtual

check if propagation of tracks to candidate vertex failed

Definition at line 175 of file DCAFitterN.h.

◆ GPUd() [6/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [7/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [8/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

pure virtual

check if propagation of tracks to candidate vertex was done

◆ GPUd() [9/27]

template<int N, typename... Args>

GPUd() o2 GPUd() o2 GPUd() o2 o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

pure virtual

< create parent track param w/o errors for decay vertex

< calculate on the fly track param (no cov mat) at candidate, check isValid to make sure propagation was successful < recalculate PCA as a cov-matrix weighted mean, even if absDCA method was used

◆ GPUd() [10/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

protected

◆ GPUd() [11/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

inlinepure virtual

return position of quality-ordered candidate in the internal structures

Definition at line 158 of file DCAFitterN.h.

◆ GPUd() [12/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const &

inlinepure virtual

< return PCA candidate, by default best on is provided (no check for the index validity)

Definition at line 157 of file DCAFitterN.h.

◆ GPUd() [13/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

protected

◆ GPUd() [14/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

protected

◆ GPUd() [15/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

pure virtual

◆ GPUd() [16/27]

template<int N, typename... Args>

GPUd() bool propagateToX(o2 GPUd() bool propagateParamToX(o2 o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const &

protected

track param positions at V0 candidate (no check for the candidate validity)

◆ GPUd() [17/27]

template<int N, typename... Args>

int class Tr o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [18/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [19/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [20/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [21/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [22/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [23/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [24/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [25/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [26/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( )

protected

◆ GPUd() [27/27]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUd ( ) const

◆ GPUdi() [1/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( ) const &

protected

◆ GPUdi() [2/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( ) const

inlinepure virtualnoexcept

return number of iterations during minimization (no check for its validity)

Definition at line 224 of file DCAFitterN.h.

◆ GPUdi() [3/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( ) const

inline

Definition at line 271 of file DCAFitterN.h.

◆ GPUdi() [4/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( ) const

inlinepure virtual

Definition at line 227 of file DCAFitterN.h.

◆ GPUdi() [5/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( ) const

inline

Definition at line 273 of file DCAFitterN.h.

◆ GPUdi() [6/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( ) &

protected

◆ GPUdi() [7/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( )

inlineprotected

Definition at line 336 of file DCAFitterN.h.

◆ GPUdi() [8/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( )

inlineprotected

Definition at line 355 of file DCAFitterN.h.

◆ GPUdi() [9/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( )

inline

Definition at line 272 of file DCAFitterN.h.

◆ GPUdi() [10/10]

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::GPUdi ( )

◆ isPropagationFailure()

template<int N, typename... Args>

bool o2::vertexing::DCAFitterN< N, Args >::isPropagationFailure ( int cand = 0 ) const

inline

track param propagated to V0 candidate (no check for the candidate validity) propagateTracksToVertex must be called in advance

Definition at line 178 of file DCAFitterN.h.

◆ setBadCovPolicy()

template<int N, typename... Args>

void o2::vertexing::DCAFitterN< N, Args >::setBadCovPolicy ( BadCovPolicy v )

inlineprotected

Definition at line 362 of file DCAFitterN.h.

Member Data Documentation

◆ args

template<int N, typename... Args>

int class Tr const T const Tr& o2::vertexing::DCAFitterN< N, Args >::args

protected

Initial value:

{
 
    static_assert(std::is_convertible<T, Track>(), "Wrong track type")

Definition at line 327 of file DCAFitterN.h.

◆ cand

template<int N, typename... Args>

int o2::vertexing::DCAFitterN< N, Args >::cand

protected

Initial value:

= 0) const { return mTrPos[mOrder[cand]][i]; }
  GPUd() float getTrackX(int i, int cand = 0) const { return getTrackPos(i, cand)[0]; }
 
  GPUd() MatStd3D getTrackRotMatrix(int i) const 
  {
    MatStd3D mat;
    mat(2, 2) = 1;
    mat(0, 0) = mat(1, 1) = mTrAux[i].c;
    mat(0, 1) = -mTrAux[i].s;
    mat(1, 0) = mTrAux[i].s;
    return mat;
  }
 
  GPUd() MatSym3D getTrackCovMatrix(int i, int cand = 0) const 
  {
    const auto& trc = mCandTr[mOrder[cand]][i];
    MatSym3D mat;
    mat(0, 0) = trc.getSigmaY2() * XerrFactor;
    mat(1, 1) = trc.getSigmaY2();
    mat(2, 2) = trc.getSigmaZ2();
    mat(2, 1) = trc.getSigmaZY();
    return mat;
  }
 
  GPUd() void assign(int) {}
  template <class T

track X-param at V0 candidate (no check for the candidate validity)

Definition at line 299 of file DCAFitterN.h.

◆ mOrigTrPtr

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::mOrigTrPtr[i] = &t

protected

Definition at line 332 of file DCAFitterN.h.

◆ pnt

template<int N, typename... Args>

o2::vertexing::DCAFitterN< N, Args >::pnt[2] = tr.getY()

protected

Definition at line 351 of file DCAFitterN.h.

◆ t

template<int N, typename... Args>

int class Tr const T& o2::vertexing::DCAFitterN< N, Args >::t

protected

Definition at line 327 of file DCAFitterN.h.

◆ tr

template<int N, typename... Args>

const Track& o2::vertexing::DCAFitterN< N, Args >::tr

protected

Initial value:

{

pnt[0] = tr.getX()

o2::vertexing::DCAFitterN::tr

const Track & tr

Definition DCAFitterN.h:349

o2::vertexing::DCAFitterN::pnt

pnt[1]

Definition DCAFitterN.h:351

Definition at line 348 of file DCAFitterN.h.

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

/home/runner/work/AliceO2/AliceO2/Common/DCAFitter/include/DCAFitter/DCAFitterN.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

◆ BadCovPolicy

◆ FitStatus

Constructor & Destructor Documentation

◆ DCAFitterN() [1/2]

◆ DCAFitterN() [2/2]

Member Function Documentation

◆ assign()

◆ calcPCACovMatrixFlat()

◆ getBadCovPolicy()

◆ getCandidatePosition()

◆ getChi2AtPCACandidate()

◆ getNProngs()

◆ getOrigTrackPtr()

◆ getTrack() [1/2]

◆ getTrack() [2/2]

◆ GPUd() [1/27]

◆ GPUd() [2/27]

◆ GPUd() [3/27]

◆ GPUd() [4/27]

◆ GPUd() [5/27]

◆ GPUd() [6/27]

◆ GPUd() [7/27]

◆ GPUd() [8/27]

◆ GPUd() [9/27]

◆ GPUd() [10/27]

◆ GPUd() [11/27]

◆ GPUd() [12/27]

◆ GPUd() [13/27]

◆ GPUd() [14/27]

◆ GPUd() [15/27]

◆ GPUd() [16/27]

◆ GPUd() [17/27]

◆ GPUd() [18/27]

◆ GPUd() [19/27]

◆ GPUd() [20/27]

◆ GPUd() [21/27]

◆ GPUd() [22/27]

◆ GPUd() [23/27]

◆ GPUd() [24/27]

◆ GPUd() [25/27]

◆ GPUd() [26/27]

◆ GPUd() [27/27]

◆ GPUdi() [1/10]

◆ GPUdi() [2/10]

◆ GPUdi() [3/10]

◆ GPUdi() [4/10]

◆ GPUdi() [5/10]

◆ GPUdi() [6/10]

◆ GPUdi() [7/10]

◆ GPUdi() [8/10]

◆ GPUdi() [9/10]

◆ GPUdi() [10/10]

◆ isPropagationFailure()

◆ setBadCovPolicy()

Member Data Documentation

◆ args

◆ cand

◆ mOrigTrPtr

◆ pnt

◆ t

◆ tr