BesVectorErr Class Reference

#include <BesVectorErr.h>

Inheritance diagram for BesVectorErr:

Public Types
enum	PolarCoordinateIndex { Rho = 0 , Theta = 1 , Phi = 2 , NUM_PCOORDINATES = 3 }
enum	CylindricalCoordinateIndex { C_Rho = 0 , C_Zeta = 1 , C_Phi = 2 , NUM_CCOORDINATES = 3 }

Public Member Functions
	BesVectorErr ()
	BesVectorErr (const Hep3Vector &p)
	BesVectorErr (const Hep3Vector &p, const BesError &covMat)
	BesVectorErr (const BesVectorErr &v)
BesVectorErr &	operator= (const BesVectorErr &v)
BesVectorErr	operator- ()
BesVectorErr &	operator+= (const BesVectorErr &v)
BesVectorErr &	operator-= (const BesVectorErr &v)
double	determineChisq (const Hep3Vector &refVector) const
const BesError &	covMatrix () const
BesError	covRTPMatrix () const
BesError	covRZPMatrix () const
void	setCovMatrix (const BesError &v)

Detailed Description

Definition at line 39 of file BesVectorErr.h.

Member Enumeration Documentation

CylindricalCoordinateIndex

enum BesVectorErr::CylindricalCoordinateIndex

Enumerator
C_Rho
C_Zeta
C_Phi
NUM_CCOORDINATES

Definition at line 50 of file BesVectorErr.h.

                                  {   
    C_Rho = 0, 
    C_Zeta = 1, 
    C_Phi = 2,
    NUM_CCOORDINATES = 3
  };

PolarCoordinateIndex

enum BesVectorErr::PolarCoordinateIndex

Enumerator
Rho
Theta
Phi
NUM_PCOORDINATES

Definition at line 43 of file BesVectorErr.h.

                            {   
    Rho = 0, 
    Theta = 1, 
    Phi = 2,
    NUM_PCOORDINATES = 3
  };

Constructor & Destructor Documentation

BesVectorErr() [1/4]

BesVectorErr::BesVectorErr ( )

inline

Definition at line 57 of file BesVectorErr.h.

: Hep3Vector(), _covMatrix(NUM_COORDINATES) {}

Referenced by operator-().

BesVectorErr() [2/4]

BesVectorErr::BesVectorErr ( const Hep3Vector & p )

inline

Definition at line 60 of file BesVectorErr.h.

: Hep3Vector(p), _covMatrix(NUM_COORDINATES)    {}

BesVectorErr() [3/4]

BesVectorErr::BesVectorErr ( const Hep3Vector & p, const BesError & covMat )

inline

Definition at line 61 of file BesVectorErr.h.

                                                            : Hep3Vector(p),
  _covMatrix(NUM_COORDINATES)               { _covMatrix=covMat; }

BesVectorErr() [4/4]

BesVectorErr::BesVectorErr ( const BesVectorErr & v )

inline

Definition at line 65 of file BesVectorErr.h.

                                      : Hep3Vector(v),
    _covMatrix(v.covMatrix())   {}

Member Function Documentation

covMatrix()

const BesError & BesVectorErr::covMatrix ( ) const

inline

Definition at line 121 of file BesVectorErr.h.

{ return _covMatrix; }

Referenced by covRTPMatrix(), covRZPMatrix(), TrkHelixUtils::helixFromMomErr(), TrkHelixUtils::lineFromMomErr(), operator*(), operator*(), and operator<<().

covRTPMatrix()

BesError BesVectorErr::covRTPMatrix

(

)

const

Definition at line 56 of file BesVectorErr.cxx.

                                         {
  // protect against 0's
  double xv = x()==0 ?  FLT_MIN : x();
  double yv = y()==0 ?  FLT_MIN : y();
  double zv = z()==0 ?  FLT_MIN : z();
  DifNumber xDF(xv,X+1,3), yDF(yv,Y+1,3), zDF(zv,Z+1,3);
  DifArray pars(3,NUM_PCOORDINATES);
  pars[Rho]   =  sqrt(xDF*xDF + yDF*yDF + zDF*zDF);
  pars[Phi]   = atan2(yDF,xDF);
  pars[Theta] = acos(zDF/pars[Rho]);
  return covMatrix().similarity(pars.jacobian());
}

covRZPMatrix()

BesError BesVectorErr::covRZPMatrix

(

)

const

Definition at line 69 of file BesVectorErr.cxx.

                                         {
  // protect against 0's
  double xv = x()==0 ?  FLT_MIN : x();
  double yv = y()==0 ?  FLT_MIN : y();
  double zv = z()==0 ?  FLT_MIN : z();
  DifNumber xDF(xv,X+1,3), yDF(yv,Y+1,3), zDF(zv,Z+1,3);
  DifArray pars(3,NUM_CCOORDINATES);
  pars[C_Rho]   =  sqrt(xDF*xDF + yDF*yDF);
  pars[C_Phi]   = atan2(yDF,xDF);
  pars[C_Zeta] = zDF;
  return covMatrix().similarity(pars.jacobian());
}

determineChisq()

double BesVectorErr::determineChisq

(

const Hep3Vector &

refVector

)

const

Definition at line 82 of file BesVectorErr.cxx.

{
   HepVector temp(NUM_COORDINATES, 0);
   temp[0] = refVector.x()-this->x();
   temp[1] = refVector.y()-this->y();
   temp[2] = refVector.z()-this->z();
   return _covMatrix.determineChisq(temp);
}

operator+=()

BesVectorErr & BesVectorErr::operator+= ( const BesVectorErr & v )

inline

Definition at line 86 of file BesVectorErr.h.

                                                   {
      Hep3Vector::operator+=(v);
      _covMatrix += v.covMatrix();
      return *this;
  }

operator-()

BesVectorErr BesVectorErr::operator- ( )

inline

Definition at line 81 of file BesVectorErr.h.

                             {
      Hep3Vector t = *this;
      return BesVectorErr( -t, _covMatrix);  // _covMatrix remains unaltered
  }

operator-=()

BesVectorErr & BesVectorErr::operator-= ( const BesVectorErr & v )

inline

Definition at line 92 of file BesVectorErr.h.

                                                   {
      Hep3Vector::operator-=(v);
      _covMatrix += v.covMatrix();
      return *this;
  }

operator=()

BesVectorErr & BesVectorErr::operator= ( const BesVectorErr & v )

inline

Definition at line 72 of file BesVectorErr.h.

    {
      if (this != &v) {
    Hep3Vector::operator=(v);
    _covMatrix = v.covMatrix();
      }
      return *this;
    }

setCovMatrix()

void BesVectorErr::setCovMatrix ( const BesError & v )

inline

Definition at line 131 of file BesVectorErr.h.

{ _covMatrix = v; }

Referenced by operator>>().

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

• BesVectorErr.h
• BesVectorErr.cxx