PixelRecoLineRZ Class Reference

#include <PixelRecoLineRZ.h>

Public Types
typedef PixelRecoPointRZ	LineOrigin

Public Member Functions
float	cotLine () const
LineOrigin	origin () const
	PixelRecoLineRZ ()
	PixelRecoLineRZ (const GlobalPoint &p1, const GlobalPoint &p2)
	PixelRecoLineRZ (const LineOrigin &aOrigin, const PixelRecoPointRZ &aPoint, float transverseIP=0.f)
	PixelRecoLineRZ (const LineOrigin &aOrigin, float aCotLine, float transverseIP=0.f)
float	rAtZ (float z) const
float	transverseIP () const
float	transverseIP2 () const
float	zAtR (float r) const

Private Member Functions
float	addTIP (float val) const
float	subTIP (float val) const

Static Private Member Functions
static float	initCot (float dz, float dr)
static float	initTIP2 (float x1, float y1, float x2, float y2)

Private Attributes
float	theCotLine
LineOrigin	theOrigin
float	theTIP2

Detailed Description

two dimensional line in r-z coordinates. line is defined by the point and cotangent

Definition at line 12 of file PixelRecoLineRZ.h.

Member Typedef Documentation

LineOrigin

typedef PixelRecoPointRZ PixelRecoLineRZ::LineOrigin

Definition at line 14 of file PixelRecoLineRZ.h.

Constructor & Destructor Documentation

PixelRecoLineRZ() [1/4]

PixelRecoLineRZ::PixelRecoLineRZ ( )

inline

Definition at line 16 of file PixelRecoLineRZ.h.

{}

PixelRecoLineRZ() [2/4]

PixelRecoLineRZ::PixelRecoLineRZ ( const GlobalPoint &  p1, const GlobalPoint &  p2  )

inline

Definition at line 18 of file PixelRecoLineRZ.h.

      : theTIP2(initTIP2(p1.x(), p1.y(), p2.x(), p2.y())),
        theOrigin(LineOrigin(subTIP(p1.perp()), p1.z())),
        theCotLine(initCot(p2.z() - theOrigin.z(), subTIP(p2.perp()) - theOrigin.r())) {}

PixelRecoLineRZ() [3/4]

PixelRecoLineRZ::PixelRecoLineRZ ( const LineOrigin &  aOrigin, float  aCotLine, float  transverseIP = 0.f  )

inline

Definition at line 23 of file PixelRecoLineRZ.h.

      : theTIP2(transverseIP * transverseIP), theOrigin(subTIP(aOrigin.r()), aOrigin.z()), theCotLine(aCotLine) {}

PixelRecoLineRZ() [4/4]

PixelRecoLineRZ::PixelRecoLineRZ ( const LineOrigin &  aOrigin, const PixelRecoPointRZ &  aPoint, float  transverseIP = 0.f  )

inline

Definition at line 26 of file PixelRecoLineRZ.h.

      : theTIP2(transverseIP * transverseIP),
        theOrigin(subTIP(aOrigin.r()), aOrigin.z()),
        theCotLine(initCot(aPoint.z() - theOrigin.z(), subTIP(aPoint.r()) - theOrigin.r())) {}

Member Function Documentation

addTIP()

float PixelRecoLineRZ::addTIP ( float  val ) const

inlineprivate

Definition at line 48 of file PixelRecoLineRZ.h.

{ return theTIP2 ? std::sqrt(val * val + theTIP2) : val; }

References mathSSE::sqrt(), theTIP2, and heppy_batch::val.

Referenced by origin(), and rAtZ().

cotLine()

float PixelRecoLineRZ::cotLine ( ) const

inline

Definition at line 31 of file PixelRecoLineRZ.h.

{ return theCotLine; }

References theCotLine.

Referenced by GlobalTrackingRegion::checkRZ(), MSLayersKeeperX0DetLayer::init(), and MultipleScatteringParametrisation::operator()().

initCot()

static float PixelRecoLineRZ::initCot ( float  dz, float  dr  )

inlinestaticprivate

Definition at line 42 of file PixelRecoLineRZ.h.

{ return (std::abs(dr) > 1.e-4f) ? dz / dr : 99999.f; }

References funct::abs(), flavorHistoryFilter_cfi::dr, PVValHelper::dz, MillePedeFileConverter_cfg::e, and f.

initTIP2()

static float PixelRecoLineRZ::initTIP2 ( float  x1, float  y1, float  x2, float  y2  )

inlinestaticprivate

Definition at line 43 of file PixelRecoLineRZ.h.

                                                                {
    double l = y1 * (x2 - x1) - x1 * (y2 - y1);
    return l * l / ((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
  }

References cmsLHEtoEOSManager::l, testProducerWithPsetDescEmpty_cfi::x1, testProducerWithPsetDescEmpty_cfi::x2, testProducerWithPsetDescEmpty_cfi::y1, and testProducerWithPsetDescEmpty_cfi::y2.

origin()

LineOrigin PixelRecoLineRZ::origin ( ) const

inline

Definition at line 34 of file PixelRecoLineRZ.h.

{ return LineOrigin(addTIP(theOrigin.r()), theOrigin.z()); }

References addTIP(), PixelRecoPointRZ::r(), theOrigin, and PixelRecoPointRZ::z().

rAtZ()

float PixelRecoLineRZ::rAtZ ( float  z ) const

inline

Definition at line 37 of file PixelRecoLineRZ.h.

                            {
    return (std::abs(theCotLine) > 1.e-4f) ? addTIP(theOrigin.r() + (z - theOrigin.z()) / theCotLine) : 99999.f;
  }

References funct::abs(), addTIP(), MillePedeFileConverter_cfg::e, f, PixelRecoPointRZ::r(), theCotLine, theOrigin, z, and PixelRecoPointRZ::z().

subTIP()

float PixelRecoLineRZ::subTIP ( float  val ) const

inlineprivate

Definition at line 49 of file PixelRecoLineRZ.h.

                                       {
    if (!theTIP2)
      return val;
    float val2 = val * val;
    return val2 > theTIP2 ? std::sqrt(val2 - theTIP2) : 0.;
  }

References mathSSE::sqrt(), theTIP2, and heppy_batch::val.

Referenced by zAtR().

transverseIP()

float PixelRecoLineRZ::transverseIP ( ) const

inline

Definition at line 32 of file PixelRecoLineRZ.h.

{ return std::sqrt(theTIP2); }

References mathSSE::sqrt(), and theTIP2.

transverseIP2()

float PixelRecoLineRZ::transverseIP2 ( ) const

inline

Definition at line 33 of file PixelRecoLineRZ.h.

{ return theTIP2; }

References theTIP2.

zAtR()

float PixelRecoLineRZ::zAtR ( float  r ) const

inline

Definition at line 36 of file PixelRecoLineRZ.h.

{ return theOrigin.z() + (subTIP(r) - theOrigin.r()) * theCotLine; }

References PixelRecoPointRZ::r(), alignCSCRings::r, subTIP(), theCotLine, theOrigin, and PixelRecoPointRZ::z().

Referenced by RectangularEtaPhiTrackingRegion::checkRZOld().

Member Data Documentation

theCotLine

float PixelRecoLineRZ::theCotLine

private

Definition at line 59 of file PixelRecoLineRZ.h.

Referenced by cotLine(), rAtZ(), and zAtR().

theOrigin

LineOrigin PixelRecoLineRZ::theOrigin

private

Definition at line 58 of file PixelRecoLineRZ.h.

Referenced by origin(), rAtZ(), and zAtR().

theTIP2

float PixelRecoLineRZ::theTIP2

private

Definition at line 57 of file PixelRecoLineRZ.h.

Referenced by addTIP(), subTIP(), transverseIP(), and transverseIP2().