recob::SpacePoint Class Reference

#include <SpacePoint.h>

Public Types
using	ID_t = int
	type of spacepoint ID More...

Public Member Functions
	SpacePoint ()
	SpacePoint (Double32_t const *xyz, Double32_t const *err, Double32_t chisq, int id=InvalidID)
ID_t	ID () const
const Double32_t *	XYZ () const
const Double32_t *	ErrXYZ () const
Double32_t	Chisq () const
geo::Point_t	position () const
	Returns the position of the point in world coordinates [cm]. More...
double	covariance (unsigned int i, unsigned int j) const

Static Public Member Functions
static constexpr std::size_t	covIndex (unsigned int i, unsigned int j)
	Returns the internal index of correlation structure for coordinates i and j. More...

Static Public Attributes
static constexpr ID_t	InvalidID = util::kBogusI
	Special value for an invalid ID. More...

Private Attributes
ID_t	fID
	Default constructor. More...
Double32_t	fXYZ [3]
	position of SpacePoint in xyz More...
Double32_t	fErrXYZ [6]
	Error matrix (lower triangular). More...
Double32_t	fChisq
	Chisquare. More...

Friends
std::ostream &	operator<< (std::ostream &o, const SpacePoint &a)
bool	operator< (const SpacePoint &a, const SpacePoint &b)

Detailed Description

Definition at line 23 of file SpacePoint.h.

Member Typedef Documentation

using recob::SpacePoint::ID_t = int

type of spacepoint ID

Definition at line 26 of file SpacePoint.h.

Constructor & Destructor Documentation

SpacePoint::SpacePoint

(

)

Definition at line 17 of file SpacePoint.cxx.

                         :
    fID(-1),
    fXYZ { 0.0 },
    fErrXYZ { 0.0 },
    fChisq(0.)
  {
  }

SpacePoint::SpacePoint	(	Double32_t const *	xyz,
		Double32_t const *	err,
		Double32_t	chisq,
		int	id = InvalidID
	)

Definition at line 26 of file SpacePoint.cxx.

    : fID(id)
    , fChisq(chisq)
  {
    for(int i = 0; i < 3; ++i) fXYZ[i]    = xyz[i];
    for(int i = 0; i < 6; ++i) fErrXYZ[i] = err[i];
  }

Member Function Documentation

Double32_t SpacePoint::Chisq ( ) const

inline

Definition at line 78 of file SpacePoint.h.

{ return fChisq;  }

double SpacePoint::covariance	(	unsigned int	i,
		unsigned int	j
	)		const

Returns the error matrix element for two position coordinates (0 for x, 1 for y and 2 for z)

Definition at line 38 of file SpacePoint.cxx.

                                                                    {

    return fErrXYZ[covIndex(i, j)];

  } // SpacePoint::covariance()

constexpr std::size_t SpacePoint::covIndex ( unsigned int  i, unsigned int  j  )

static

Returns the internal index of correlation structure for coordinates i and j.

Definition at line 46 of file SpacePoint.cxx.

                                                                         {

    constexpr std::size_t offsets[3U] = { 0U, 1U, 3U };

    if (i < j) std::swap(i, j);
    return offsets[i] + j;

  } // SpacePoint::covIndex()

const Double32_t * SpacePoint::ErrXYZ ( ) const

inline

Definition at line 77 of file SpacePoint.h.

{ return fErrXYZ; }

recob::SpacePoint::ID_t SpacePoint::ID ( ) const

inline

Definition at line 75 of file SpacePoint.h.

{ return fID; }

geo::Point_t SpacePoint::position ( ) const

inline

Returns the position of the point in world coordinates [cm].

Definition at line 80 of file SpacePoint.h.

{ return geo::Point_t{ fXYZ[0], fXYZ[1], fXYZ[2] }; }

const Double32_t * SpacePoint::XYZ ( ) const

inline

Definition at line 76 of file SpacePoint.h.

{ return fXYZ;    }

Friends And Related Function Documentation

bool operator< ( const SpacePoint &  a, const SpacePoint &  b  )

friend

Definition at line 74 of file SpacePoint.cxx.

  {
    if(a.ID() != b. ID())
      return a.ID()<b.ID();

    return false; //They are equal

  }

std::ostream& operator<< ( std::ostream &  o, const SpacePoint &  a  )

friend

Definition at line 58 of file SpacePoint.cxx.

  {
    o << std::setiosflags(std::ios::fixed) << std::setprecision(2);
    o << " SpacePoint ID " << std::setw(5) << std::right << a.ID()
      << " (X,Y,Z) = ("    << std::setw(5) << std::right << a.XYZ()[0]
      << " , "             << std::setw(5) << std::right << a.XYZ()[1]
      << " , "             << std::setw(5) << std::right << a.XYZ()[2]
      << ")" ;

    return o;
  }

Member Data Documentation

Double32_t recob::SpacePoint::fChisq

private

Chisquare.

Definition at line 38 of file SpacePoint.h.

Double32_t recob::SpacePoint::fErrXYZ[6]

private

Error matrix (lower triangular).

Definition at line 37 of file SpacePoint.h.

ID_t recob::SpacePoint::fID

private

Default constructor.

SpacePoint ID

Definition at line 35 of file SpacePoint.h.

Double32_t recob::SpacePoint::fXYZ[3]

private

position of SpacePoint in xyz

Definition at line 36 of file SpacePoint.h.

constexpr ID_t recob::SpacePoint::InvalidID = util::kBogusI

static

Special value for an invalid ID.

Definition at line 29 of file SpacePoint.h.

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

• lardataobj/lardataobj/RecoBase/SpacePoint.h
• lardataobj/lardataobj/RecoBase/SpacePoint.cxx