InDetDD::TRT_EndcapElement Class Reference

#include <TRT_EndcapElement.h>

Inheritance diagram for InDetDD::TRT_EndcapElement:

Collaboration diagram for InDetDD::TRT_EndcapElement:

Public Types
enum	Type { BARREL, ENDCAP }

Public Member Functions
	TRT_EndcapElement (const GeoVFullPhysVol *volume, const TRT_EndcapDescriptor *descriptor, bool isPositive, unsigned int wheelIndex, unsigned int strawLayIndex, unsigned int phiIndex, const TRT_ID *idHelper, const TRT_Conditions *conditions)
	Constructor. More...
	TRT_EndcapElement (const TRT_EndcapElement &right)
virtual	~TRT_EndcapElement ()
	Destructor: More...
virtual TRT_BaseElement::Type	type () const override final
	Type information: More...
virtual const double &	strawLength () const override
	Active straw length. More...
virtual int	strawDirection () const override final
	StrawDirection. More...
const TRT_EndcapDescriptor *	getDescriptor () const
	Returns a pointer to a descriptor, giving common information on module construction. More...
const TRT_EndcapElement *	nextInZ () const
	Next in Z: More...
const TRT_EndcapElement *	previousInZ () const
	Prev in Z: More...
void	setNextInZ (const TRT_EndcapElement *element)
	Set Next in Z. More...
void	setPreviousInZ (const TRT_EndcapElement *element)
	Set Previous in Z. More...
const TRT_EndcapCode &	getCode () const
	Doomed (??) More...
virtual const Trk::SurfaceBounds &	strawBounds () const override final
	the straw bounds More...
virtual Identifier	identify () const override final
	identifier of this detector element: More...
virtual IdentifierHash	identifyHash () const override final
	identifier hash More...
const GeoTrf::Transform3D &	defTransform () const
	Get Default Transform (of module in barrel, layer in endcap) from GeoModel before alignment corrections. More...
const HepGeom::Transform3D	getAbsoluteTransform (int straw) const
	This is an alias to strawTransform(int straw) More...
virtual const Trk::Surface &	surface () const override final
	Element Surface: access to the Surface (straw layer) More...
virtual const Trk::Surface &	surface (const Identifier &id) const override final
	Straw Surface: access to the surface via identifier. More...
virtual const Trk::SurfaceBounds &	bounds () const override final
	Straw layer bounds. More...
virtual const Trk::SurfaceBounds &	bounds (const Identifier &id) const override final
	Straw Surface: access to the bounds via Identifier. More...
virtual const Amg::Transform3D &	transform () const override final
	Element Surface: Get Transform of element in Tracking frame: Amg. More...
virtual const Amg::Transform3D &	transform (const Identifier &id) const override final
	Straw Surface: access to the transform of individual straw in Tracking frame: Amg. More...
virtual const Amg::Vector3D &	center () const override final
	Element Surface: center of a straw layer. More...
virtual const Amg::Vector3D &	center (const Identifier &id) const override final
	Straw Surface: Center of a straw using Identifier Straw center and straw axis can be obtained by the following: (The straw center is the center of the active region) Amg::Transform3D& transform = element->strawTransform(straw); Amb::Vector3D& center = element->strawCenter(); double r = element->strawCenter()->perp(); double phi = element->strawCenter()->phi(); Amg::Vector3D strawAxis = element->strawTransform(straw)* Vector3D(0,0,1) * strawDirection() More...
virtual const Amg::Vector3D &	normal () const override final
	Element Surface: normal of a straw layer. More...
virtual const Amg::Vector3D &	normal (const Identifier &id) const override final
	Normal of a straw. More...
virtual Trk::DetectorElemType	detectorType () const override final
	TrkDetElementBase interface detectorTyoe. More...
const std::vector< const Trk::Surface * > &	surfaces () const
	Returns the full list of all detection surfaces associated to this detector element. More...
const Amg::Transform3D &	strawTransform (unsigned int straw) const
	Straw transform - fast access in array, in Tracking frame: Amg. More...
const Amg::Transform3D &	strawTransform (int straw) const
	Straw Surface: Local -> global transform of the straw via integer. More...
const Trk::StraightLineSurface &	strawSurface (int straw) const
	Straw Surface: access to the surface via integer. More...
const Amg::Vector3D &	strawCenter (int straw) const
	Straw Surface: Local -> global transform of the straw via integer. More...
Amg::Vector3D	strawAxis (int straw) const
	Straw axis. More...
unsigned int	nStraws () const
	Number of straws in the element. More...
void	invalidate ()
	Invalidate cache. More...
void	updateAllCaches ()
	Update all caches. More...
const TRT_Conditions *	conditions () const
	Return the TRT_Conditions object associated to this Detector element. More...
void	invalidateOther () const
	invalidate action on the cache More...
std::string	detectorTypeString () const
	Returns a string of the Detector element type. More...

Static Public Member Functions
static const TRT_EndcapConditions *	getConditionsData ()
	Returns a pointer to conditions data. More...

Protected Attributes
Identifier	m_id
IdentifierHash	m_idHash
unsigned int	m_nstraws = 0
const TRT_ID *	m_idHelper =nullptr
const TRT_Conditions *	m_conditions =nullptr
CxxUtils::CachedUniquePtr< Trk::Surface >	m_surface
std::vector< CxxUtils::CachedUniquePtr< Trk::StraightLineSurface > >	m_strawSurfaces {}
std::vector< CxxUtils::CachedUniquePtr< SurfaceCacheBase > >	m_strawSurfacesCache {}
	helper element surface for the cache More...
CxxUtils::CachedValue< std::vector< const Trk::Surface * > >	m_surfaces
CxxUtils::CachedValue< SurfaceCache >	m_surfaceCache

Private Member Functions
virtual HepGeom::Transform3D	calculateStrawTransform (int straw) const override
	These transforms are effectively to the local coord system of a straw derived from GeoModel -> hence CLHEP. More...
HepGeom::Transform3D	calculateLocalStrawTransform (int straw) const
virtual const Trk::Surface &	elementSurface () const override
	return the surface of the element More...
virtual void	createSurfaceCache () const override
	create the cache for the element More...
SurfaceCache	createSurfaceCacheHelper () const
void	createSurfaceCache (Identifier id) const
	create the cache for the straw of identifier id More...
const TRT_EndcapElement &	operator= (const TRT_EndcapElement &right)=delete
void	deleteCache ()
	Helper method for cache dealing. More...

Private Attributes
TRT_EndcapCode	m_code
const TRT_EndcapDescriptor *	m_descriptor
const TRT_EndcapElement *	m_nextInZ
const TRT_EndcapElement *	m_previousInZ

Detailed Description

Extended class of a TRT_BaseElement to describe a readout elment in the endcap. It secifies the strawTransfrom methods by getting the information from GeoModel

The readout element in the EC is a wheel with straws radially placed on it.

The number of straws described by this readout element can be retrieved by nStraws()

Author

: Grant Gorfine

• modified & maintained: Nick Styles, Andreas Salzburger

Definition at line 44 of file TRT_EndcapElement.h.

Member Enumeration Documentation

Type

enum InDetDD::TRT_BaseElement::Type

inherited

Enumerator
BARREL
ENDCAP

Definition at line 61 of file TRT_BaseElement.h.

{BARREL, ENDCAP};

Constructor & Destructor Documentation

TRT_EndcapElement() [1/2]

InDetDD::TRT_EndcapElement::TRT_EndcapElement	(	const GeoVFullPhysVol *	volume,
		const TRT_EndcapDescriptor *	descriptor,
		bool	isPositive,
		unsigned int	wheelIndex,
		unsigned int	strawLayIndex,
		unsigned int	phiIndex,
		const TRT_ID *	idHelper,
		const TRT_Conditions *	conditions
	)

Constructor.

Definition at line 27 of file TRT_EndcapElement.cxx.

  :
 
  TRT_BaseElement(volume,
                  idHelper->layer_id((isPositive ? 2 : -2),
                                     phiIndex,
                                     wheelIndex,
                                     strawLayIndex),
                  idHelper,
                  conditions)
  , m_code(isPositive, wheelIndex, strawLayIndex, phiIndex)
  , m_descriptor(descriptor)
  , m_nextInZ(nullptr)
  , m_previousInZ(nullptr)
{
  m_nstraws = m_descriptor->nStraws();
  m_strawSurfaces.resize(m_nstraws);
  m_strawSurfacesCache.resize(m_nstraws);
}

TRT_EndcapElement() [2/2]

InDetDD::TRT_EndcapElement::TRT_EndcapElement

(

const TRT_EndcapElement &

right

)

Definition at line 54 of file TRT_EndcapElement.cxx.

  : TRT_BaseElement(right)
  , m_code(right.m_code)
  , m_descriptor(right.m_descriptor)
  , m_nextInZ(right.m_nextInZ)
  , m_previousInZ(right.m_previousInZ)
{
  m_nstraws = right.m_nstraws;
  m_strawSurfaces.resize(m_nstraws);
  m_strawSurfacesCache.resize(m_nstraws);
}

~TRT_EndcapElement()

InDetDD::TRT_EndcapElement::~TRT_EndcapElement ( )

virtualdefault

Destructor:

Member Function Documentation

bounds() [1/2]

virtual const Trk::SurfaceBounds& InDetDD::TRT_BaseElement::bounds ( ) const

finaloverridevirtualinherited

Straw layer bounds.

Implements Trk::TrkDetElementBase.

bounds() [2/2]

const Trk::SurfaceBounds & InDetDD::TRT_BaseElement::bounds ( const Identifier &  id ) const

finaloverridevirtualinherited

Straw Surface: access to the bounds via Identifier.

Implements Trk::TrkDetElementBase.

Definition at line 72 of file TRT_BaseElement.cxx.

{
  return strawBounds();
}

calculateLocalStrawTransform()

HepGeom::Transform3D InDetDD::TRT_EndcapElement::calculateLocalStrawTransform ( int  straw ) const

private

Definition at line 144 of file TRT_EndcapElement.cxx.

{
  const TRTCond::StrawDxContainer* container = conditions()->dxContainer();
  HepGeom::Transform3D rc;
  if (container) {
 
    // important note: dx1 moves the 'negative' wire endpoint end dx2
    // the 'positive' wire endpoint in the local straw frame.
    // In the global frame, 'dx1' corresponds to the readout side and 'dx2'
    // to the side closest the beampipe.
 
    int bec = getCode().isPosZ() ? +2 : -2;
    int wheel = getCode().getWheelIndex();
    int phimodule = getCode().getPhiIndex();
    int strawlayer = getCode().getStrawLayerIndex();
    TRTCond::ExpandedIdentifier id =
      TRTCond::ExpandedIdentifier(bec,
                                  wheel,
                                  phimodule,
                                  strawlayer,
                                  straw,
                                  TRTCond::ExpandedIdentifier::STRAW);
 
    double dx1 = container->getDx1(id);
    double dx2 = container->getDx2(id);
    double ang = (dx2 - dx1) / strawLength();
    double dy = -1 * (dx2 + dx1) / 2.;
 
    // In the local straw frame:
    //   - the z-axis is along the straw and points toward the beampipe
    //   - the x-axis is along global-z and away from the interaction point
    //          (locX = globZ A-side / locX = -1 *gobZ C-side)
    //   - the y-axis is along global phi_hat direction determined by the
    //   other 2.
    //          (clockwise C-side, counter clockwise A-Side)
    rc = HepGeom::TranslateY3D(dy) * HepGeom::RotateX3D(ang);
  }
  return rc;
}

calculateStrawTransform()

HepGeom::Transform3D InDetDD::TRT_EndcapElement::calculateStrawTransform ( int  straw ) const

overrideprivatevirtual

These transforms are effectively to the local coord system of a straw derived from GeoModel -> hence CLHEP.

Implements InDetDD::TRT_BaseElement.

Definition at line 100 of file TRT_EndcapElement.cxx.

{
  // NB The tranformation to a straw is reconstructed here precisely as
  // it was ... hopefully... in the factory.  One could eliminate this
  // requirement and make the code a little more robust in this regard but
  // at the cost of doubling the descriptors.  (One descriptor now suffices
  // for both positive and negative endcaps).
  const GeoXF::Function* f = m_descriptor->getStrawTransform();
 
  if (f) {
    int istraw = m_code.isPosZ() ? straw : m_descriptor->nStraws() - 1 - straw;
 
    size_t offsetInto = m_descriptor->getStrawTransformOffset();
 
    return Amg::EigenTransformToCLHEP(
             getMaterialGeom()->getAbsoluteTransform() *
             ((*f)(istraw + offsetInto))) *
           calculateLocalStrawTransform(straw);
 
  } else {
 
    // Will not work properly with alignments.
    std::cout << "ALTERNATIVE METHOD" << std::endl;
 
    double phi = m_descriptor->startPhi() + m_descriptor->strawPitch() * straw;
    double r = m_descriptor->innerRadius() + 0.5 * m_descriptor->strawLength();
    CLHEP::Hep3Vector pos(
      r * cos(phi),
      r * sin(phi),
      (Amg::EigenTransformToCLHEP(getMaterialGeom()->getAbsoluteTransform()) *
       HepGeom::Point3D<double>())
        .z());
    CLHEP::HepRotation rot;
    // Axis (in local (0,0,1)) points towards beam axis.
    rot.rotateY(-0.5 * M_PI); // Make it point along -ve X.
    rot.rotateZ(phi);
    return HepGeom::Transform3D(rot, pos);
  }
}

center() [1/2]

virtual const Amg::Vector3D& InDetDD::TRT_BaseElement::center ( ) const

finaloverridevirtualinherited

Element Surface: center of a straw layer.

Implements Trk::TrkDetElementBase.

center() [2/2]

const Amg::Vector3D & InDetDD::TRT_BaseElement::center ( const Identifier &  id ) const

finaloverridevirtualinherited

Straw Surface: Center of a straw using Identifier Straw center and straw axis can be obtained by the following: (The straw center is the center of the active region) Amg::Transform3D& transform = element->strawTransform(straw); Amb::Vector3D& center = element->strawCenter(); double r = element->strawCenter()->perp(); double phi = element->strawCenter()->phi(); Amg::Vector3D strawAxis = element->strawTransform(straw)* Vector3D(0,0,1) * strawDirection()

Implements Trk::TrkDetElementBase.

Definition at line 110 of file TRT_BaseElement.cxx.

{
  int straw = m_idHelper->straw(id);
  if (!m_strawSurfacesCache[straw]) {
    createSurfaceCache(id);
  }
  // forward the transform of the cache
  return m_strawSurfacesCache[straw]->center();
}

conditions()

const TRT_Conditions* InDetDD::TRT_BaseElement::conditions ( ) const

inherited

Return the TRT_Conditions object associated to this Detector element.

createSurfaceCache() [1/2]

void InDetDD::TRT_EndcapElement::createSurfaceCache ( ) const

overrideprivatevirtual

create the cache for the element

Implements InDetDD::TRT_BaseElement.

Definition at line 199 of file TRT_EndcapElement.cxx.

{
 if (!m_surfaceCache.isValid()) {
    m_surfaceCache.set(createSurfaceCacheHelper());
  }
  // create the surface if needed
  if (!m_surface) {
    elementSurface();
  }
}

createSurfaceCache() [2/2]

void InDetDD::TRT_EndcapElement::createSurfaceCache ( Identifier  id ) const

private

create the cache for the straw of identifier id

createSurfaceCacheHelper()

SurfaceCache InDetDD::TRT_EndcapElement::createSurfaceCacheHelper ( ) const

private

Definition at line 211 of file TRT_EndcapElement.cxx.

{
  // Calculate the surface
  double phiCenter = m_descriptor->startPhi() +
                     m_descriptor->strawPitch() * 0.5 * (nStraws() - 1);
  double phiHalfWidth = 0.5 * m_descriptor->strawPitch() * nStraws();
  double rMin = m_descriptor->innerRadius();
  double rMax = rMin + m_descriptor->strawLength();
 
  // The transform of the endcap is a translation in z for no
  // misalignement. For the -ve endcap there is also a 180deg rotation
  // around the y axis. getAbsoluteTransform() will also include the
  // misalignment.
  //
  // To get the transform of the element we have to first rotate
  // around z to the phi center of the element.  We want the local z
  // to point in the same direction for both endcaps (approximately
  // global z axis). For the negative endcap we therefore have to
  // rotate 180 CLHEP::deg around the Y axis.
 
  // We need to rotate to phi center before we apply the
  // misalignment. However, in the negative endcap the the phi
  // location is inverted (due to 180 rotation around y axis). This is
  // taken care of by the extra 180 CLHEP::deg rotation around Y that we do
  // to get the z axis pointing in the correct direction.
  auto transform =
    m_code.isPosZ()
      ? Amg::Transform3D((getMaterialGeom()->getAbsoluteTransform() *
                          GeoTrf::RotateZ3D(phiCenter)))
      : Amg::Transform3D((getMaterialGeom()->getAbsoluteTransform() *
                          GeoTrf::RotateY3D(180 * CLHEP::deg) *
                          GeoTrf::RotateZ3D(phiCenter)));
 
  // create the igredients and the cache
  auto center = Amg::Vector3D(transform.translation());
  auto bounds = std::make_unique<Trk::DiscBounds>(rMin, rMax, phiHalfWidth);
  auto normal = Amg::Vector3D(transform.rotation().col(2));
 
  return {transform, center, normal, std::move(bounds)};
}

defTransform()

const GeoTrf::Transform3D& InDetDD::TRT_BaseElement::defTransform ( ) const

inherited

Get Default Transform (of module in barrel, layer in endcap) from GeoModel before alignment corrections.

deleteCache()

void InDetDD::TRT_BaseElement::deleteCache ( )

privateinherited

Helper method for cache dealing.

Definition at line 200 of file TRT_BaseElement.cxx.

{
  // for all straws
  for (auto & i : m_strawSurfacesCache) {
    i.store(nullptr);
  }
}

detectorType()

virtual Trk::DetectorElemType InDetDD::TRT_BaseElement::detectorType ( ) const

finaloverridevirtualinherited

TrkDetElementBase interface detectorTyoe.

Implements Trk::TrkDetElementBase.

detectorTypeString()

std::string Trk::TrkDetElementBase::detectorTypeString ( ) const

inherited

Returns a string of the Detector element type.

Definition at line 10 of file TrkDetElementBase.cxx.

                                                         {
  auto type = detectorType();
  if (type == Trk::DetectorElemType::SolidState)
    return "SolidState";
  else if (type == Trk::DetectorElemType::Silicon)
    return "Silicon";
  else if (type == Trk::DetectorElemType::TRT)
    return "TRT";
  else if (type == Trk::DetectorElemType::Csc)
    return "Csc";
  else if (type == Trk::DetectorElemType::Mdt)
    return "Mdt";
  else if (type == Trk::DetectorElemType::Rpc)
    return "Rpc";
  else if (type == Trk::DetectorElemType::Tgc)
    return "Tgc";
  else if (type == Trk::DetectorElemType::sTgc)
    return "sTgc";
  else if (type == Trk::DetectorElemType::MM)
    return "Mm";
  return "Unknown";
}

elementSurface()

const Trk::Surface & InDetDD::TRT_EndcapElement::elementSurface ( ) const

overrideprivatevirtual

return the surface of the element

Implements InDetDD::TRT_BaseElement.

Definition at line 191 of file TRT_EndcapElement.cxx.

{
  if (not m_surface)
    m_surface.set(std::make_unique<Trk::DiscSurface>(*this));
  return *m_surface;
}

getAbsoluteTransform()

const HepGeom::Transform3D InDetDD::TRT_BaseElement::getAbsoluteTransform ( int  straw ) const

inherited

This is an alias to strawTransform(int straw)

Definition at line 42 of file TRT_BaseElement.cxx.

{
  return Amg::EigenTransformToCLHEP(strawTransform(straw));
}

getCode()

const TRT_EndcapCode& InDetDD::TRT_EndcapElement::getCode

(

)

const

Doomed (??)

getConditionsData()

const TRT_EndcapConditions * InDetDD::TRT_EndcapElement::getConditionsData ( )

static

Returns a pointer to conditions data.

This includes information on dead and noisy wires, as well as wire sags.

Definition at line 76 of file TRT_EndcapElement.cxx.

{
  return nullptr;
}

getDescriptor()

const TRT_EndcapDescriptor * InDetDD::TRT_EndcapElement::getDescriptor

(

)

const

Returns a pointer to a descriptor, giving common information on module construction.

Definition at line 82 of file TRT_EndcapElement.cxx.

{
  return m_descriptor;
}

identify()

virtual Identifier InDetDD::TRT_BaseElement::identify ( ) const

finaloverridevirtualinherited

identifier of this detector element:

Implements Trk::TrkDetElementBase.

identifyHash()

virtual IdentifierHash InDetDD::TRT_BaseElement::identifyHash ( ) const

finaloverridevirtualinherited

identifier hash

Implements Trk::TrkDetElementBase.

invalidate()

void InDetDD::TRT_BaseElement::invalidate ( )

inherited

Invalidate cache.

Definition at line 190 of file TRT_BaseElement.cxx.

{
  // Invalidate the caches
  // Call and barrel or endcap specific invalidation
  invalidateOther();
  // Its enough to delete and zero the caches.
  deleteCache();
}

invalidateOther()

void InDetDD::TRT_BaseElement::invalidateOther ( ) const

inlineinherited

invalidate action on the cache

Definition at line 193 of file TRT_BaseElement.h.

{};

nextInZ()

const TRT_EndcapElement* InDetDD::TRT_EndcapElement::nextInZ

(

)

const

Next in Z:

normal() [1/2]

virtual const Amg::Vector3D& InDetDD::TRT_BaseElement::normal ( ) const

finaloverridevirtualinherited

Element Surface: normal of a straw layer.

Implements Trk::TrkDetElementBase.

normal() [2/2]

const Amg::Vector3D & InDetDD::TRT_BaseElement::normal ( const Identifier &  id ) const

finaloverridevirtualinherited

Normal of a straw.

(Not very meaningful).

Implements Trk::TrkDetElementBase.

Definition at line 100 of file TRT_BaseElement.cxx.

{
  // Not sure if the normal of the straw is ever used.
  // nor is there a well defined normal.
  // This wont be corrected for alignments.
  // Just return the element normal
  return normal();
}

nStraws()

unsigned int InDetDD::TRT_BaseElement::nStraws ( ) const

inherited

Number of straws in the element.

operator=()

const TRT_EndcapElement& InDetDD::TRT_EndcapElement::operator= ( const TRT_EndcapElement &  right )

privatedelete

previousInZ()

const TRT_EndcapElement* InDetDD::TRT_EndcapElement::previousInZ

(

)

const

Prev in Z:

setNextInZ()

void InDetDD::TRT_EndcapElement::setNextInZ

(

const TRT_EndcapElement *

element

)

Set Next in Z.

Definition at line 88 of file TRT_EndcapElement.cxx.

{
  m_nextInZ = element;
}

setPreviousInZ()

void InDetDD::TRT_EndcapElement::setPreviousInZ

(

const TRT_EndcapElement *

element

)

Set Previous in Z.

Definition at line 94 of file TRT_EndcapElement.cxx.

{
  m_previousInZ = element;
}

strawAxis()

Amg::Vector3D InDetDD::TRT_BaseElement::strawAxis ( int  straw ) const

inherited

Straw axis.

Always in direction of increasing eta. +ve z direction in barrel (for both +ve and -ve half) Away from beam pipe in -ve z endcap, Towards beam pipe in +ve endcap.

Definition at line 154 of file TRT_BaseElement.cxx.

{
  return (strawTransform(straw).linear() * Amg::Vector3D::UnitZ() *
          strawDirection());
}

strawBounds()

const Trk::SurfaceBounds & InDetDD::TRT_EndcapElement::strawBounds ( ) const

finaloverridevirtual

the straw bounds

Implements InDetDD::TRT_BaseElement.

Definition at line 185 of file TRT_EndcapElement.cxx.

{
  return m_descriptor->strawBounds();
}

strawCenter()

const Amg::Vector3D & InDetDD::TRT_BaseElement::strawCenter ( int  straw ) const

inherited

Straw Surface: Local -> global transform of the straw via integer.

Definition at line 143 of file TRT_BaseElement.cxx.

{
  if (!m_strawSurfacesCache[straw]) {
    Identifier id = m_idHelper->straw_id(identify(), straw);
    createSurfaceCache(id);
  }
  // forward the transform of the cache
  return m_strawSurfacesCache[straw]->center();
}

strawDirection()

int InDetDD::TRT_EndcapElement::strawDirection ( ) const

finaloverridevirtual

StrawDirection.

+1 if axis is in same direction as local coordinate, -1 otherwise.

Implements InDetDD::TRT_BaseElement.

Definition at line 253 of file TRT_EndcapElement.cxx.

{
  // Return +1 if the straw local axis is in the same direction as increasing
  // eta direction,
  //  -1 otherwise.
  // The straw axis by convention goes in the direction away from the readout.
  // This is towards the beam pipe. For +ve endcap it is what we want. For -ve
  // endcap it is oppposite.
  //
  //
  return (m_code.isPosZ()) ? +1 : -1;
}

strawLength()

const double & InDetDD::TRT_EndcapElement::strawLength ( ) const

overridevirtual

Active straw length.

Implements InDetDD::TRT_BaseElement.

Definition at line 70 of file TRT_EndcapElement.cxx.

{
  return m_descriptor->strawLength();
}

strawSurface()

const Trk::StraightLineSurface & InDetDD::TRT_BaseElement::strawSurface ( int  straw ) const

inherited

Straw Surface: access to the surface via integer.

Definition at line 121 of file TRT_BaseElement.cxx.

{
  if (!m_strawSurfaces[straw]) {
    // get the straw identifier to the given straw number and element identifier
    Identifier id = m_idHelper->straw_id(identify(), straw);
    createSurfaceCache(id);
  }
  return *(m_strawSurfaces[straw].get());
}

strawTransform() [1/2]

const Amg::Transform3D & InDetDD::TRT_BaseElement::strawTransform ( int  straw ) const

inherited

Straw Surface: Local -> global transform of the straw via integer.

Definition at line 132 of file TRT_BaseElement.cxx.

{
  if (!m_strawSurfacesCache[straw]) {
    Identifier id = m_idHelper->straw_id(identify(), straw);
    createSurfaceCache(id);
  }
  // forward the transform of the cache
  return m_strawSurfacesCache[straw]->transform();
}

strawTransform() [2/2]

const Amg::Transform3D & InDetDD::TRT_BaseElement::strawTransform ( unsigned int  straw ) const

inherited

Straw transform - fast access in array, in Tracking frame: Amg.

Straw Surface: access to the transform of individual straw in Tracking frame: Amg

Definition at line 89 of file TRT_BaseElement.cxx.

{
  if (!m_strawSurfacesCache[straw]) {
    Identifier id = m_idHelper->straw_id(identify(), straw);
    createSurfaceCache(id);
  }
  // forward the transform of the cache
  return m_strawSurfacesCache[straw]->transform();
}

surface() [1/2]

virtual const Trk::Surface& InDetDD::TRT_BaseElement::surface ( ) const

finaloverridevirtualinherited

Element Surface: access to the Surface (straw layer)

Implements Trk::TrkDetElementBase.

surface() [2/2]

const Trk::Surface & InDetDD::TRT_BaseElement::surface ( const Identifier &  id ) const

finaloverridevirtualinherited

Straw Surface: access to the surface via identifier.

Implements Trk::TrkDetElementBase.

Definition at line 48 of file TRT_BaseElement.cxx.

{
  int straw = m_idHelper->straw(id);
  if (!m_strawSurfaces[straw]) {
    createSurfaceCache(id);
  }
  return *(m_strawSurfaces[straw]);
}

surfaces()

const std::vector< const Trk::Surface * > & InDetDD::TRT_BaseElement::surfaces ( ) const

inherited

Returns the full list of all detection surfaces associated to this detector element.

Definition at line 58 of file TRT_BaseElement.cxx.

{
  if (!m_surfaces.isValid()) {
    std::vector<const Trk::Surface*> tmp_surfaces;
    tmp_surfaces.reserve(nStraws());
    for (unsigned is = 0; is < nStraws(); ++is) {
      tmp_surfaces.push_back(&strawSurface(is));
    }
    m_surfaces.set(tmp_surfaces);
  }
  return *(m_surfaces.ptr());
}

transform() [1/2]

virtual const Amg::Transform3D& InDetDD::TRT_BaseElement::transform ( ) const

finaloverridevirtualinherited

Element Surface: Get Transform of element in Tracking frame: Amg.

Implements Trk::TrkDetElementBase.

transform() [2/2]

const Amg::Transform3D & InDetDD::TRT_BaseElement::transform ( const Identifier &  id ) const

finaloverridevirtualinherited

Straw Surface: access to the transform of individual straw in Tracking frame: Amg.

Implements Trk::TrkDetElementBase.

Definition at line 78 of file TRT_BaseElement.cxx.

{
  int straw = m_idHelper->straw(id);
  if (!m_strawSurfacesCache[straw]) {
    createSurfaceCache(id);
  }
  // forward the transform of the cache
  return m_strawSurfacesCache[straw]->transform();
}

type()

virtual TRT_BaseElement::Type InDetDD::TRT_EndcapElement::type ( ) const

finaloverridevirtual

Type information:

Implements InDetDD::TRT_BaseElement.

updateAllCaches()

void InDetDD::TRT_BaseElement::updateAllCaches ( )

inherited

Update all caches.

Definition at line 209 of file TRT_BaseElement.cxx.

{
  // delete the caches first
  deleteCache();
  // Strawlayer caches
  if (!m_surfaceCache.isValid()){
    createSurfaceCache();
  }
  // Loop over all straws and request items that get cached.
  for (unsigned int iStraw = 0; iStraw < nStraws(); iStraw++) {
    Identifier strawId = m_idHelper->straw_id(identify(), iStraw);
    createSurfaceCache(strawId);
  }
}

Member Data Documentation

m_code

TRT_EndcapCode InDetDD::TRT_EndcapElement::m_code

private

Definition at line 119 of file TRT_EndcapElement.h.

m_conditions

const TRT_Conditions* InDetDD::TRT_BaseElement::m_conditions =nullptr

protectedinherited

Definition at line 213 of file TRT_BaseElement.h.

m_descriptor

const TRT_EndcapDescriptor* InDetDD::TRT_EndcapElement::m_descriptor

private

Definition at line 120 of file TRT_EndcapElement.h.

m_id

Identifier InDetDD::TRT_BaseElement::m_id

protectedinherited

Definition at line 204 of file TRT_BaseElement.h.

m_idHash

IdentifierHash InDetDD::TRT_BaseElement::m_idHash

protectedinherited

Definition at line 205 of file TRT_BaseElement.h.

m_idHelper

const TRT_ID* InDetDD::TRT_BaseElement::m_idHelper =nullptr

protectedinherited

Definition at line 212 of file TRT_BaseElement.h.

m_nextInZ

const TRT_EndcapElement* InDetDD::TRT_EndcapElement::m_nextInZ

private

Definition at line 121 of file TRT_EndcapElement.h.

m_nstraws

unsigned int InDetDD::TRT_BaseElement::m_nstraws = 0

protectedinherited

Definition at line 211 of file TRT_BaseElement.h.

m_previousInZ

const TRT_EndcapElement* InDetDD::TRT_EndcapElement::m_previousInZ

private

Definition at line 122 of file TRT_EndcapElement.h.

m_strawSurfaces

std::vector<CxxUtils::CachedUniquePtr<Trk::StraightLineSurface> > InDetDD::TRT_BaseElement::m_strawSurfaces {}

protectedinherited

Definition at line 216 of file TRT_BaseElement.h.

m_strawSurfacesCache

std::vector<CxxUtils::CachedUniquePtr<SurfaceCacheBase> > InDetDD::TRT_BaseElement::m_strawSurfacesCache {}

protectedinherited

helper element surface for the cache

Definition at line 217 of file TRT_BaseElement.h.

m_surface

CxxUtils::CachedUniquePtr<Trk::Surface> InDetDD::TRT_BaseElement::m_surface

protectedinherited

Definition at line 214 of file TRT_BaseElement.h.

m_surfaceCache

CxxUtils::CachedValue<SurfaceCache> InDetDD::TRT_BaseElement::m_surfaceCache

protectedinherited

Definition at line 220 of file TRT_BaseElement.h.

m_surfaces

CxxUtils::CachedValue<std::vector<const Trk::Surface*> > InDetDD::TRT_BaseElement::m_surfaces

protectedinherited

Definition at line 219 of file TRT_BaseElement.h.

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

• TRT_EndcapElement.h
• TRT_EndcapElement.cxx