SiStripOverlapHit Class Reference

#include <CalibTracker/SiStripHitResolution/interface/SiStripOverlapHit.cc>

Public Types
using	ConstRecHitPointer = TrackingRecHit::ConstRecHitPointer
using	RecHitPointer = TrackingRecHit::RecHitPointer

Public Member Functions
double	distance (bool fromTrajectory=false) const
double	getTrackLocalAngle (unsigned int hit) const
ConstRecHitPointer const &	hit (unsigned int hit) const
ConstRecHitPointer const &	hitA () const
ConstRecHitPointer const &	hitB () const
double	offset (unsigned int hit) const
GlobalPoint	position () const
double	shift () const
	SiStripOverlapHit (TrajectoryMeasurement const &measA, TrajectoryMeasurement const &measB)
TrajectoryStateOnSurface const &	trajectoryStateOnSurface (unsigned int hit=0, bool updated=true) const
virtual	~SiStripOverlapHit ()

Private Attributes
TrajectoryMeasurement	measA_
TrajectoryMeasurement	measB_

Detailed Description

Description: A pair of hits on overlaping modules

Implementation: Designed for CPE studies. Includes methods to compute residuals, etc.

Definition at line 27 of file SiStripOverlapHit.h.

Member Typedef Documentation

ConstRecHitPointer

using SiStripOverlapHit::ConstRecHitPointer = TrackingRecHit::ConstRecHitPointer

Definition at line 30 of file SiStripOverlapHit.h.

RecHitPointer

using SiStripOverlapHit::RecHitPointer = TrackingRecHit::RecHitPointer

Definition at line 29 of file SiStripOverlapHit.h.

Constructor & Destructor Documentation

SiStripOverlapHit()

SiStripOverlapHit::SiStripOverlapHit ( TrajectoryMeasurement const &  measA, TrajectoryMeasurement const &  measB  )

explicit

Definition at line 4 of file SiStripOverlapHit.cc.

References measA_, measB_, and TrajectoryMeasurement::recHit().

                                                                                                           {
  // check which hit is closer to the IP
  // assign it to hitA_, the other to hitB_
  double rA = measA.recHit()->globalPosition().perp();
  double rB = measB.recHit()->globalPosition().perp();
  if (rA < rB) {
    measA_ = measA;
    measB_ = measB;
  } else {
    measA_ = measB;
    measB_ = measA;
  }
}

~SiStripOverlapHit()

virtual SiStripOverlapHit::~SiStripOverlapHit ( )

inlinevirtual

Definition at line 35 of file SiStripOverlapHit.h.

{}

Member Function Documentation

distance()

double SiStripOverlapHit::distance

(

bool

fromTrajectory = false

)

const

Definition at line 48 of file SiStripOverlapHit.cc.

References hitA(), hitB(), and trajectoryStateOnSurface().

                                                            {
  if (fromTrajectory) {
    return (trajectoryStateOnSurface(0, true).globalPosition().basicVector() -
            trajectoryStateOnSurface(1, true).globalPosition().basicVector())
        .mag();
  } else {
    return (hitA()->globalPosition().basicVector() - hitB()->globalPosition().basicVector()).mag();
  }
}

getTrackLocalAngle()

double SiStripOverlapHit::getTrackLocalAngle

(

unsigned int

hit

)

const

Definition at line 30 of file SiStripOverlapHit.cc.

References trajectoryStateOnSurface(), x, and z.

                                                                   {
  // since x is the precise coordinate and z is pointing out, we want the angle between z and x
  return hit ? atan(trajectoryStateOnSurface(hit - 1).localDirection().x() /
                    trajectoryStateOnSurface(hit - 1).localDirection().z())
             : (getTrackLocalAngle(1) + getTrackLocalAngle(2)) / 2.;
}

hit()

ConstRecHitPointer const& SiStripOverlapHit::hit ( unsigned int  hit ) const

inline

Definition at line 40 of file SiStripOverlapHit.h.

References hitA(), and hitB().

Referenced by offset().

{ return hit ? hitB() : hitA(); }

hitA()

ConstRecHitPointer const& SiStripOverlapHit::hitA ( ) const

inline

Definition at line 38 of file SiStripOverlapHit.h.

References measA_, and TrajectoryMeasurement::recHit().

Referenced by distance(), hit(), and position().

{ return measA_.recHit(); }

hitB()

ConstRecHitPointer const& SiStripOverlapHit::hitB ( ) const

inline

Definition at line 39 of file SiStripOverlapHit.h.

References measB_, and TrajectoryMeasurement::recHit().

Referenced by distance(), hit(), and position().

{ return measB_.recHit(); }

offset()

double SiStripOverlapHit::offset

(

unsigned int

hit

)

const

Definition at line 37 of file SiStripOverlapHit.cc.

References cms::cuda::assert(), hit(), TrajectoryStateOnSurface::localPosition(), trajectoryStateOnSurface(), and PV3DBase< T, PVType, FrameType >::x().

Referenced by shift().

                                                       {
  assert(hit < 2);
  // x is the precise coordinate
  return this->hit(hit)->localPosition().x() - trajectoryStateOnSurface(hit, false).localPosition().x();
}

position()

GlobalPoint SiStripOverlapHit::position

(

)

const

Definition at line 58 of file SiStripOverlapHit.cc.

References hitA(), hitB(), and trackerHitRTTI::vector.

                                              {
  auto vector = (hitA()->globalPosition().basicVector() + hitB()->globalPosition().basicVector()) / 2.;
  return GlobalPoint(vector);
}

shift()

double SiStripOverlapHit::shift

(

)

const

Definition at line 43 of file SiStripOverlapHit.cc.

References offset().

                                      {
  // so this is the double difference
  return offset(0) - offset(1);
}

trajectoryStateOnSurface()

TrajectoryStateOnSurface const & SiStripOverlapHit::trajectoryStateOnSurface	(	unsigned int	hit = 0,
		bool	updated = true
	)		const

Definition at line 18 of file SiStripOverlapHit.cc.

References cms::cuda::assert(), measA_, measB_, TrajectoryMeasurement::predictedState(), and TrajectoryMeasurement::updatedState().

Referenced by distance(), getTrackLocalAngle(), and offset().

                                                                                                                {
  assert(hit < 2);
  switch (hit) {
    case 0:
      return updated ? measA_.updatedState() : measA_.predictedState();
    case 1:
      return updated ? measB_.updatedState() : measB_.predictedState();
    default:
      return measA_.updatedState();
  }
}

Member Data Documentation

measA_

TrajectoryMeasurement SiStripOverlapHit::measA_

private

Definition at line 57 of file SiStripOverlapHit.h.

Referenced by hitA(), SiStripOverlapHit(), and trajectoryStateOnSurface().

measB_

TrajectoryMeasurement SiStripOverlapHit::measB_

private

Definition at line 58 of file SiStripOverlapHit.h.

Referenced by hitB(), SiStripOverlapHit(), and trajectoryStateOnSurface().