MdcSegInfoAxialO Class Reference

#include <MdcSegInfoAxialO.h>

Inheritance diagram for MdcSegInfoAxialO:

Public Member Functions
	MdcSegInfoAxialO ()
	~MdcSegInfoAxialO ()
double	phi0 () const
double	curv () const
double	sigCurv () const
double	sigPhi0 () const
bool	parIsAngle (int i) const
void	calcFromOrigin (const MdcSeg *parentSeg)
void	calcFromOrigin (double phi, double slope, double rad, const double *inErr)
Public Member Functions inherited from MdcSegInfo
	MdcSegInfo ()
virtual	~MdcSegInfo ()
const double *	errmat () const
const double *	inverr () const
double	par (int i) const
double	arc () const
virtual bool	parIsAngle (int i) const =0
void	plotSegInfo () const

Additional Inherited Members
Protected Attributes inherited from MdcSegInfo
double	_par0
double	_par1
double	_errmat [3]
double	_inverr [3]
double	_arc

Detailed Description

Definition at line 27 of file MdcSegInfoAxialO.h.

Constructor & Destructor Documentation

MdcSegInfoAxialO()

MdcSegInfoAxialO::MdcSegInfoAxialO ( )

inline

Definition at line 30 of file MdcSegInfoAxialO.h.

{ };

~MdcSegInfoAxialO()

MdcSegInfoAxialO::~MdcSegInfoAxialO ( )

inline

Definition at line 31 of file MdcSegInfoAxialO.h.

{ };

Member Function Documentation

calcFromOrigin() [1/2]

void MdcSegInfoAxialO::calcFromOrigin

(

const MdcSeg *

parentSeg

)

Definition at line 67 of file MdcSegInfoAxialO.cxx.

                                                        {
//-------------------------------------------------------------------
  double slope = parentSeg->slope();
  double radius = parentSeg->superlayer()->rad0();
  double phi = parentSeg->phi();
  const double *inErr = parentSeg->errmat();
 
  calcFromOrigin(phi, slope, radius, inErr);
}

Referenced by calcFromOrigin(), and MdcSegGrouperAx::fillWithSegs().

calcFromOrigin() [2/2]

void MdcSegInfoAxialO::calcFromOrigin	(	double	phi,
		double	slope,
		double	rad,
		const double *	inErr
	)

Definition at line 34 of file MdcSegInfoAxialO.cxx.

                                                      {
//------------------------------------------------------------------
  
  if (slope == 0.) slope = 0.00000001;
  double slinv = 1./slope;
  _par1 = slope / sqrt(1. + radius*radius * slope*slope);  //curve
  double temp = 1. - _par1*_par1 * radius*radius;
  if (temp < 0.) temp = 0.;
  double dphi0ds = -radius * _par1 * sqrt(temp) * slinv;
  BesAngle phi0 = phi - asin(_par1 * radius);    
  _par0 = phi0.posRad();
 
  // phi0:
  _errmat[0] = inErr[2] * dphi0ds * dphi0ds  + inErr[0]  +  
    inErr[1] * 2. * dphi0ds;
  if (_errmat[0] < 0.) _errmat[0] = 0.;
  // curv:
  _errmat[2] = inErr[2] * _par1*_par1 * temp*temp * slinv*slinv;
  if (_errmat[2] < 0.) _errmat[2] = 0.;
    // phi0|curv:
  _errmat[1] = inErr[2] *_par1 * slinv * temp * dphi0ds + 
               inErr[1] *_par1 * slinv * temp;
  int error = mdcTwoInv(_errmat, _inverr);
  if (error) {
    std::cout << " ErrMsg(warning) " 
      << "Failed to invert matrix -- MdcSegInfo::calcFromOrigin" << endl
      << _errmat[0] << " " << _errmat[1] << " " << _errmat[2]<< endl;
  }
}

curv()

double MdcSegInfoAxialO::curv ( ) const

inline

Definition at line 34 of file MdcSegInfoAxialO.h.

{return _par1;}

Referenced by MdcSegGrouperAx::incompWithSeg().

parIsAngle()

bool MdcSegInfoAxialO::parIsAngle ( int  i ) const

virtual

Implements MdcSegInfo.

Definition at line 27 of file MdcSegInfoAxialO.cxx.

                                        {
//---------------------------------------------------------------------------
  assert (i >= 0 && i < 2);
  return (0 == i);   //i.e., 0th parameter is an angle
}

phi0()

double MdcSegInfoAxialO::phi0 ( ) const

inline

Definition at line 33 of file MdcSegInfoAxialO.h.

{return _par0;}

Referenced by calcFromOrigin(), MdcSegGrouperAx::fillWithSegs(), and MdcSegGrouperAx::incompWithSeg().

sigCurv()

double MdcSegInfoAxialO::sigCurv

(

)

const

Definition at line 85 of file MdcSegInfoAxialO.cxx.

                                {
//-------------------------------------------------------------------
return sqrt(_errmat[2]);}

Referenced by MdcSegGrouperAx::incompWithSeg().

sigPhi0()

double MdcSegInfoAxialO::sigPhi0

(

)

const

Definition at line 79 of file MdcSegInfoAxialO.cxx.

                                {
//-------------------------------------------------------------------
return sqrt(_errmat[0]);}

Referenced by MdcSegGrouperAx::incompWithSeg().

---

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

• MdcSegInfoAxialO.h
• MdcSegInfoAxialO.cxx