MSLayer Class Reference

#include <MSLayer.h>

Classes
struct	DataX0

Public Types
typedef PixelRecoRange< float >	Range

Public Member Functions
std::pair< PixelRecoPointRZ, bool >	crossing (const PixelRecoLineRZ &line) const
std::pair< PixelRecoPointRZ, bool >	crossing (const SimpleLineRZ &line) const
float	distance2 (const PixelRecoPointRZ &point) const
const GeomDetEnumerators::Location &	face () const
float	halfThickness () const
	MSLayer (const DetLayer *layer, const DataX0 &dataX0=DataX0(0))
	MSLayer ()
	MSLayer (GeomDetEnumerators::Location part, float position, Range range, float halfThickness=0., const DataX0 &dataX0=DataX0(0))
bool	operator< (const MSLayer &o) const
bool	operator== (const MSLayer &o) const
float	position () const
const Range &	range () const
int	seqNum () const
float	sumX0D (float cotTheta) const
float	x0 (float cotTheta) const

Private Attributes
GeomDetEnumerators::Location	theFace
float	theHalfThickness
float	thePosition
Range	theRange
int	theSeqNum
DataX0	theX0Data

Friends
class	MSLayersKeeper
std::ostream &	operator<< (std::ostream &s, const MSLayer &l)

Detailed Description

Definition at line 14 of file MSLayer.h.

Member Typedef Documentation

typedef PixelRecoRange<float> MSLayer::Range

Definition at line 16 of file MSLayer.h.

Constructor & Destructor Documentation

MSLayer::MSLayer	(	const DetLayer *	layer,
		const DataX0 &	dataX0 = DataX0(0)
	)

Definition at line 33 of file MSLayer.cc.

References Reference_intrackfit_cff::barrel, Surface::bounds(), gather_cfg::cout, Reference_intrackfit_cff::endcap, Bounds::length(), GeometricSearchDet::position(), ForwardDetLayer::specificSurface(), BarrelDetLayer::specificSurface(), GeometricSearchDet::surface(), BarrelDetLayer::surface(), theFace, theHalfThickness, thePosition, theRange, Bounds::thickness(), and PV3DBase< T, PVType, FrameType >::z().

  : theFace(layer->location()), theSeqNum(layer->seqNum()), theX0Data(dataX0)
{
  const BarrelDetLayer* bl; const ForwardDetLayer * fl;
  theHalfThickness = layer->surface().bounds().thickness()/2;  

  switch (theFace) {
  case barrel : 
    bl = static_cast<const BarrelDetLayer* >(layer);
    thePosition = bl->specificSurface().radius();
    theRange = Range(-bl->surface().bounds().length()/2,
             bl->surface().bounds().length()/2);
    break;
  case endcap : 
    fl = static_cast<const ForwardDetLayer* >(layer);
    thePosition = fl->position().z(); 
    theRange = Range(fl->specificSurface().innerRadius(),
                     fl->specificSurface().outerRadius());
    break;
  default:
    // should throw or simimal
    cout << " ** MSLayer ** unknown part - will not work!" <<endl; 
    break;
  } 
}

MSLayer::MSLayer ( )

inline

Definition at line 33 of file MSLayer.h.

{ }

MSLayer::MSLayer	(	GeomDetEnumerators::Location	part,
		float	position,
		Range	range,
		float	halfThickness = 0.,
		const DataX0 &	dataX0 = DataX0(0)
	)

Definition at line 59 of file MSLayer.cc.

  : theFace(part), 
    thePosition(position), 
    theRange(range), 
    theHalfThickness(halfThickness),
    theSeqNum(-1),
    theX0Data(dataX0)
  { }

Member Function Documentation

pair< PixelRecoPointRZ, bool > MSLayer::crossing

(

const PixelRecoLineRZ &

line

)

const

Definition at line 90 of file MSLayer.cc.

References Reference_intrackfit_cff::barrel, PixelRecoRange< T >::max(), PixelRecoRange< T >::min(), PixelRecoLineRZ::rAtZ(), std::swap(), theFace, thePosition, theRange, relativeConstraints::value, z, and PixelRecoLineRZ::zAtR().

Referenced by MultipleScatteringParametrisation::operator()().

                                                                                 { 
  const float eps = 1.e-5;
  bool  inLayer = true;
  float value = (theFace==barrel) ? line.zAtR(thePosition) : line.rAtZ(thePosition);
  if (value > theRange.max()) { 
    value = theRange.max()-eps;
    inLayer = false;
  } else if (value < theRange.min() ) { 
    value = theRange.min()+eps;
    inLayer = false;
  }
  float z = thePosition;
  if (theFace==barrel) std::swap(z,value); // if barrel value is z
  return make_pair( PixelRecoPointRZ( value, z), inLayer);
}

pair< PixelRecoPointRZ, bool > MSLayer::crossing

(

const SimpleLineRZ &

line

)

const

Definition at line 105 of file MSLayer.cc.

References Reference_intrackfit_cff::barrel, PixelRecoRange< T >::max(), PixelRecoRange< T >::min(), SimpleLineRZ::rAtZ(), std::swap(), theFace, thePosition, theRange, relativeConstraints::value, z, and SimpleLineRZ::zAtR().

                                                                              { 
  const float eps = 1.e-5;
  bool  inLayer = true;
  float value = (theFace==barrel) ? line.zAtR(thePosition) : line.rAtZ(thePosition);
  if (value > theRange.max()) { 
    value = theRange.max()-eps;
    inLayer = false;
  } else if (value < theRange.min() ) { 
    value = theRange.min()+eps;
    inLayer = false;
  }
  float z = thePosition;
  if (theFace==barrel) std::swap(z,value); // if barrel value is z
  return make_pair( PixelRecoPointRZ( value, z), inLayer);
}

float MSLayer::distance2

(

const PixelRecoPointRZ &

point

)

const

Definition at line 122 of file MSLayer.cc.

References funct::abs(), Reference_intrackfit_cff::barrel, PixelRecoRange< T >::inside(), PixelRecoRange< T >::max(), PixelRecoRange< T >::min(), PixelRecoPointRZ::r(), funct::sqr(), theFace, theHalfThickness, thePosition, theRange, findQualityFiles::v, and PixelRecoPointRZ::z().

{
  float u = (theFace==barrel) ? point.r() : point.z();
  float v = (theFace==barrel) ? point.z() : point.r();
 
  float  du = std::abs(u-thePosition);
  if (theRange.inside(v))  return (du < theHalfThickness) ? 0.f : du*du;

  float dv = (v > theRange.max()) ?
            v-theRange.max() : theRange.min() - v;
  return sqr(du)+sqr(dv);
}

const GeomDetEnumerators::Location& MSLayer::face ( ) const

inline

Definition at line 47 of file MSLayer.h.

References theFace.

Referenced by operator<<().

{ return theFace; }

float MSLayer::halfThickness ( ) const

inline

Definition at line 49 of file MSLayer.h.

References theHalfThickness.

{ return theHalfThickness; }

bool MSLayer::operator<

(

const MSLayer &

o

)

const

Definition at line 76 of file MSLayer.cc.

References funct::abs(), Reference_intrackfit_cff::barrel, Reference_intrackfit_cff::endcap, PixelRecoRange< T >::max(), range(), theFace, and thePosition.

{

  if (theFace==barrel && o.theFace==barrel) 
    return thePosition < o.thePosition;
  else if (theFace==barrel && o.theFace==endcap)
    return thePosition < o.range().max(); 
  else if (theFace==endcap && o.theFace==endcap ) 
    return std::abs(thePosition) < std::abs(o.thePosition);
  else 
    return range().max() < o.thePosition; 
}

bool MSLayer::operator==

(

const MSLayer &

o

)

const

Definition at line 71 of file MSLayer.cc.

References funct::abs(), f, theFace, and thePosition.

{
  return  theFace == o.theFace && std::abs(thePosition-o.thePosition) < 1.e-3f;
}

float MSLayer::position ( ) const

inline

Definition at line 48 of file MSLayer.h.

References thePosition.

Referenced by operator<<().

{ return thePosition; }

const Range& MSLayer::range ( ) const

inline

Definition at line 45 of file MSLayer.h.

References theRange.

Referenced by operator<(), and operator<<().

{ return theRange; }

int MSLayer::seqNum ( ) const

inline

Definition at line 41 of file MSLayer.h.

References theSeqNum.

Referenced by MultipleScatteringParametrisation::operator()().

{ return theSeqNum;}

float MSLayer::sumX0D

(

float

cotTheta

)

const

Definition at line 152 of file MSLayer.cc.

References MSLayer::DataX0::allLayers, Reference_intrackfit_cff::barrel, MSLayer::DataX0::cotTheta, Reference_intrackfit_cff::endcap, f, MSLayersAtAngle::findLayer(), MSLayer::DataX0::hasFSlope, MSLayer::DataX0::hasX0, GeomDetEnumerators::invalidLoc, MSLayersKeeper::layers(), likely, MSLayer::DataX0::slopeSumX0D, mathSSE::sqrt(), MSLayer::DataX0::sumX0D, sumX0D(), theFace, and theX0Data.

Referenced by MSLayersKeeperX0Averaged::init(), MultipleScatteringParametrisation::operator()(), and sumX0D().

{
if likely(theX0Data.hasX0) {
    switch(theFace) {
    case barrel:  
      return theX0Data.sumX0D
    *std::sqrt( std::sqrt(   (1.f+cotTheta*cotTheta)
                 / (1.f+theX0Data.cotTheta*theX0Data.cotTheta)
                 )
            );
    case endcap: 
      return (theX0Data.hasFSlope) ?  
         theX0Data.sumX0D 
             + theX0Data.slopeSumX0D * (1.f/cotTheta-1.f/theX0Data.cotTheta)
       : theX0Data.sumX0D;
    case invalidLoc: break;// make gcc happy
    }
  } else if (theX0Data.allLayers) {
    const MSLayer* dataLayer =
       theX0Data.allLayers->layers(cotTheta).findLayer(*this);
    if (dataLayer) return  dataLayer->sumX0D(cotTheta);
  }
  return 0.;

}

float MSLayer::x0

(

float

cotTheta

)

const

Definition at line 137 of file MSLayer.cc.

References funct::abs(), MSLayer::DataX0::allLayers, Reference_intrackfit_cff::barrel, f, MSLayersAtAngle::findLayer(), MSLayer::DataX0::hasX0, MSLayersKeeper::layers(), likely, mathSSE::sqrt(), theFace, theX0Data, MSLayer::DataX0::x0, and x0().

Referenced by MultipleScatteringParametrisation::operator()(), and x0().

{
  if likely(theX0Data.hasX0) {
    float OverSinTheta = std::sqrt(1.f+cotTheta*cotTheta);
    return (theFace==barrel) ? theX0Data.x0*OverSinTheta :
                               theX0Data.x0*OverSinTheta/std::abs(cotTheta);
  } else if (theX0Data.allLayers) {
    const MSLayer * dataLayer =
       theX0Data.allLayers->layers(cotTheta).findLayer(*this);
    if (dataLayer) return  dataLayer->x0(cotTheta);
  } 
  return 0.;
}

Friends And Related Function Documentation

friend class MSLayersKeeper

friend

Definition at line 74 of file MSLayer.h.

std::ostream& operator<< ( std::ostream &  s, const MSLayer &  l  )

friend

Member Data Documentation

GeomDetEnumerators::Location MSLayer::theFace

private

Definition at line 66 of file MSLayer.h.

Referenced by crossing(), distance2(), face(), MSLayer(), operator<(), operator==(), sumX0D(), and x0().

float MSLayer::theHalfThickness

private

Definition at line 69 of file MSLayer.h.

Referenced by distance2(), halfThickness(), and MSLayer().

float MSLayer::thePosition

private

Definition at line 67 of file MSLayer.h.

Referenced by crossing(), distance2(), MSLayer(), operator<(), operator==(), and position().

Range MSLayer::theRange

private

Definition at line 68 of file MSLayer.h.

Referenced by crossing(), distance2(), MSLayer(), and range().

int MSLayer::theSeqNum

private

Definition at line 70 of file MSLayer.h.

Referenced by seqNum().

DataX0 MSLayer::theX0Data

private

Definition at line 72 of file MSLayer.h.

Referenced by MSLayersKeeper::getDataX0(), operator<<(), MSLayersKeeper::setDataX0(), sumX0D(), and x0().