PixelRecoLineRZ Class Reference

#include <PixelRecoLineRZ.h>

List of all members.

Public Types
typedef PixelRecoPointRZ	LineOrigin
Public Member Functions
float	cotLine () const
LineOrigin	origin () const
	PixelRecoLineRZ ()
	PixelRecoLineRZ (const LineOrigin &aOrigin, const PixelRecoPointRZ &aPoint, float transverseIP=0.f)
	PixelRecoLineRZ (const GlobalPoint &p1, const GlobalPoint &p2)
	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

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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.

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Member Typedef Documentation

typedef PixelRecoPointRZ PixelRecoLineRZ::LineOrigin

Definition at line 15 of file PixelRecoLineRZ.h.

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Constructor & Destructor Documentation

PixelRecoLineRZ::PixelRecoLineRZ

(

)

[inline]

Definition at line 17 of file PixelRecoLineRZ.h.

{ }

PixelRecoLineRZ::PixelRecoLineRZ	(	const GlobalPoint &	p1,
		const GlobalPoint &	p2
	)		[inline]

Definition at line 19 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::PixelRecoLineRZ	(	const LineOrigin &	aOrigin,
		float	aCotLine,
		float	transverseIP = 0.f
	)		[inline]

Definition at line 25 of file PixelRecoLineRZ.h.

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

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

Definition at line 30 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

float PixelRecoLineRZ::addTIP

(

float

val

)

const [inline, private]

Definition at line 55 of file PixelRecoLineRZ.h.

References mathSSE::sqrt(), and theTIP2.

Referenced by origin(), and rAtZ().

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

float PixelRecoLineRZ::cotLine

(

)

const [inline]

Definition at line 36 of file PixelRecoLineRZ.h.

References theCotLine.

Referenced by GlobalTrackingRegion::checkRZ(), RectangularEtaPhiTrackingRegion::checkRZOld(), ThirdHitCorrection::init(), MSLayersKeeperX0DetLayer::init(), HitEtaCheck::operator()(), MultipleScatteringParametrisation::operator()(), HitRCheck::range(), MSLayersAtAngle::sum2RmRn(), and L1MuonPixelTrackFitter::valCotTheta().

{ return theCotLine; }

static float PixelRecoLineRZ::initCot	(	float	dz,
		float	dr
	)		[inline, static, private]

Definition at line 47 of file PixelRecoLineRZ.h.

References abs, ExpressReco_HICollisions_FallBack::e, and f.

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

static float PixelRecoLineRZ::initTIP2	(	float	x1,
		float	y1,
		float	x2,
		float	y2
	)		[inline, static, private]

Definition at line 49 of file PixelRecoLineRZ.h.

References prof2calltree::l.

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

LineOrigin PixelRecoLineRZ::origin

(

)

const [inline]

Definition at line 39 of file PixelRecoLineRZ.h.

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

Referenced by HitEtaCheck::operator()().

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

float PixelRecoLineRZ::rAtZ

(

float

z

)

const [inline]

Definition at line 43 of file PixelRecoLineRZ.h.

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

Referenced by MSLayer::crossing(), and HitRCheck::range().

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

float PixelRecoLineRZ::subTIP

(

float

val

)

const [inline, private]

Definition at line 57 of file PixelRecoLineRZ.h.

References mathSSE::sqrt(), and theTIP2.

Referenced by zAtR().

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

float PixelRecoLineRZ::transverseIP

(

)

const [inline]

Definition at line 37 of file PixelRecoLineRZ.h.

References mathSSE::sqrt(), and theTIP2.

{ return std::sqrt(theTIP2); }

float PixelRecoLineRZ::transverseIP2

(

)

const [inline]

Definition at line 38 of file PixelRecoLineRZ.h.

References theTIP2.

{ return theTIP2; }

float PixelRecoLineRZ::zAtR

(

float

r

)

const [inline]

Definition at line 41 of file PixelRecoLineRZ.h.

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

Referenced by RectangularEtaPhiTrackingRegion::checkRZOld(), MSLayer::crossing(), and HitZCheck::range().

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

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Member Data Documentation

float PixelRecoLineRZ::theCotLine [private]

Definition at line 67 of file PixelRecoLineRZ.h.

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

LineOrigin PixelRecoLineRZ::theOrigin [private]

Definition at line 66 of file PixelRecoLineRZ.h.

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

float PixelRecoLineRZ::theTIP2 [private]

Definition at line 65 of file PixelRecoLineRZ.h.

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