APhi0Sweeped< T, APhi0 > Class Template Reference

Takes a basic object and sweeps it by some angle phi0 range a around the origin. More...

#include <Phi0Sweeped.h>

Inheritance diagram for APhi0Sweeped< T, APhi0 >:

Public Types
using	HoughBox = SweepBox< APhi0, typename T::HoughBox >
	The box to which this object corresponds.
using	SubordinaryHoughBox = typename T::HoughBox
	The hough box without the sweep in phi0.

Public Member Functions
	APhi0Sweeped (float curlCurv)
	Constructor taking the curling curvature.
ESign	getDistanceSign (const HoughBox &houghBox, float x, float y, float signedDriftLength, float dxdz=0, float dydz=0, ILayer iCLayer=-1) const
	Function that gives the sign of the distance from an observed drift circle to the sweeped object.

Private Attributes
float	m_curlCurv = NAN
	The curvature above which the trajectory is considered a curler.

Detailed Description

template<class T, class APhi0 = DiscretePhi0>
class Belle2::TrackFindingCDC::APhi0Sweeped< T, APhi0 >

Takes a basic object and sweeps it by some angle phi0 range a around the origin.

Definition at line 26 of file Phi0Sweeped.h.

Member Typedef Documentation

HoughBox

using HoughBox = SweepBox<APhi0, typename T::HoughBox>

The box to which this object corresponds.

Definition at line 34 of file Phi0Sweeped.h.

SubordinaryHoughBox

using SubordinaryHoughBox = typename T::HoughBox

The hough box without the sweep in phi0.

Definition at line 37 of file Phi0Sweeped.h.

Constructor & Destructor Documentation

APhi0Sweeped()

APhi0Sweeped ( float  curlCurv )

inline

Constructor taking the curling curvature.

Definition at line 40 of file Phi0Sweeped.h.

: m_curlCurv(curlCurv) {}

Member Function Documentation

getDistanceSign()

ESign getDistanceSign ( const HoughBox &  houghBox, float  x, float  y, float  signedDriftLength, float  dxdz = 0, float  dydz = 0, ILayer  iCLayer = -1  ) const

inline

Function that gives the sign of the distance from an observed drift circle to the sweeped object.

Definition at line 45 of file Phi0Sweeped.h.

      {
        const Vector2D& lowerPhi0Vec(houghBox.template getLowerBound<APhi0>());
        const Vector2D& upperPhi0Vec(houghBox.template getUpperBound<APhi0>());
        const SubordinaryHoughBox& subordinaryHoughBox = houghBox.getSubordinaryBox();
 
        const float lowerX = x * lowerPhi0Vec.x() + y * lowerPhi0Vec.y();
        const float upperX = x * upperPhi0Vec.x() + y * upperPhi0Vec.y();
 
        float lowerCurv(getLowerCurv(houghBox));
        float upperCurv(getUpperCurv(houghBox));
 
        const bool lowerIsNonCurler = fabs(lowerCurv) < m_curlCurv;
        const bool upperIsNonCurler = fabs(upperCurv) < m_curlCurv;
 
        if (lowerIsNonCurler and upperIsNonCurler) {
          if (not(lowerX >= 0) and not(upperX >= 0)) return ESign::c_Invalid;
        }
 
        const float lowerY = -x * lowerPhi0Vec.y() + y * lowerPhi0Vec.x();
        const float upperY = -x * upperPhi0Vec.y() + y * upperPhi0Vec.x();
 
        const float upperDXDZ = dxdz * upperPhi0Vec.x() + dydz * upperPhi0Vec.y();
        const float lowerDXDZ = dxdz * lowerPhi0Vec.x() + dydz * lowerPhi0Vec.y();
 
 
        const float lowerDYDZ = -dxdz * lowerPhi0Vec.y() + dydz * lowerPhi0Vec.x();
        const float upperDYDZ = -dxdz * upperPhi0Vec.y() + dydz * upperPhi0Vec.x();
 
        const ESign lowerDistSign = T::getDistanceSign(subordinaryHoughBox,
                                                       lowerX, lowerY,
                                                       signedDriftLength,
                                                       lowerDXDZ, lowerDYDZ.
                                                       iCLayer);
 
        const ESign upperDistSign = T::getDistanceSign(subordinaryHoughBox,
                                                       upperX, upperY,
                                                       signedDriftLength,
                                                       upperDXDZ, upperDYDZ,
                                                       iCLayer);
 
        return ESignUtil::common(lowerDistSign, upperDistSign);
      }

Member Data Documentation

m_curlCurv

float m_curlCurv = NAN

private

The curvature above which the trajectory is considered a curler.

Definition at line 97 of file Phi0Sweeped.h.

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

• tracking/trackFindingCDC/hough/perigee/include/Phi0Sweeped.h