Helper class to access the Acts::surface associated with an Uncalibrated xAOD measurement. More...

#include <xAODUncalibMeasSurfAcc.h>

Collaboration diagram for ActsTrk::detail::xAODUncalibMeasSurfAcc:

Public Member Functions
	xAODUncalibMeasSurfAcc ()=default
	Empty default constructor -> conversion will crash for ID measurements. More...

	xAODUncalibMeasSurfAcc (const ActsTrk::ITrackingGeometryTool *trackGeoTool)
	Constructor taking the pointer to the Tracking geometry tool. More...

const Acts::Surface *	operator() (const Acts::SourceLink &sourceLink) const
	Operator called by the Acts API to fetch the surface. More...

const Acts::Surface *	get (const xAOD::UncalibratedMeasurement *meas) const
	Operator. More...

Private Attributes
const Acts::TrackingGeometry *	m_actsTrackingGeometry {nullptr}

const DetectorElementToActsGeometryIdMap *	m_detectorElementToGeometryIdMap {nullptr}

Detailed Description

Helper class to access the Acts::surface associated with an Uncalibrated xAOD measurement.

In the ID domain, the Acts identifier of the uncalibrated measurement is looked-up in the DetectorElementToActsGeometryIdMap and then the tracking geometry is used to return the corresponding surface. In the muon domain, all measurements have a link to the associated readout element and the surface look-up is performed via a helper funciton.

Definition at line 22 of file xAODUncalibMeasSurfAcc.h.

Constructor & Destructor Documentation

◆ xAODUncalibMeasSurfAcc() [1/2]

ActsTrk::detail::xAODUncalibMeasSurfAcc::xAODUncalibMeasSurfAcc ( )

default

Empty default constructor -> conversion will crash for ID measurements.

◆ xAODUncalibMeasSurfAcc() [2/2]

ActsTrk::detail::xAODUncalibMeasSurfAcc::xAODUncalibMeasSurfAcc ( const ActsTrk::ITrackingGeometryTool * trackGeoTool )

Constructor taking the pointer to the Tracking geometry tool.

The tracking geometry and the surface association map are directly retrieved from the tool.

Parameters

trackGeoTool Pointer to the tracking geometry tool

Definition at line 12 of file xAODUncalibMeasSurfAcc.cxx.

                                                                                                   :
         m_actsTrackingGeometry{trackGeoTool->trackingGeometry().get()},
         m_detectorElementToGeometryIdMap{trackGeoTool->surfaceIdMap()}{}

Member Function Documentation

◆ get()

const Acts::Surface * ActsTrk::detail::xAODUncalibMeasSurfAcc::get ( const xAOD::UncalibratedMeasurement * meas ) const

Operator.

ID measurements use the tracking geometry surface id look up to fetch the surface

Muon measurements have a direct link to the readout geometry -> surface

Definition at line 19 of file xAODUncalibMeasSurfAcc.cxx.

                                                                                                 {
         switch (meas->type()) {
             using enum xAOD::UncalibMeasType;
             case PixelClusterType:
             case StripClusterType:
             case HGTDClusterType:{
                 assert(m_detectorElementToGeometryIdMap);
                 assert(m_actsTrackingGeometry);
                 const auto geoKey = makeDetectorElementKey(meas->type(), meas->identifierHash());
                 const auto geoid_iter = m_detectorElementToGeometryIdMap->find(geoKey);
                 if (geoid_iter == m_detectorElementToGeometryIdMap->end()) {
                     return nullptr;
                 }
                 return m_actsTrackingGeometry->findSurface( DetectorElementToActsGeometryIdMap::getValue(*geoid_iter));
             }
             case MdtDriftCircleType:
             case RpcStripType:
             case TgcStripType:
             case sTgcStripType:
             case MMClusterType:{
                 return &xAOD::muonSurface(meas);
                 break;
             }case Other: {
                 const auto* pMeas = static_cast<const xAOD::AuxiliaryMeasurement*>(meas);
                 return pMeas->surface().get();
             }
  
             default:
                 break;
               
         }
 #ifndef NDEBUG
         throw std::domain_error("xAODUncalibMeasSurfAcc() - Cannot decode surface type");
 #endif        
         return nullptr;
     }

◆ operator()()

const Acts::Surface * ActsTrk::detail::xAODUncalibMeasSurfAcc::operator() ( const Acts::SourceLink & sourceLink ) const

Operator called by the Acts API to fetch the surface.

Definition at line 16 of file xAODUncalibMeasSurfAcc.cxx.

                                                                                                 {
         return get(xAODUncalibMeasCalibrator::unpack(sourceLink));
     }

Member Data Documentation

◆ m_actsTrackingGeometry

const Acts::TrackingGeometry* ActsTrk::detail::xAODUncalibMeasSurfAcc::m_actsTrackingGeometry {nullptr}

private

Definition at line 36 of file xAODUncalibMeasSurfAcc.h.

◆ m_detectorElementToGeometryIdMap

const DetectorElementToActsGeometryIdMap* ActsTrk::detail::xAODUncalibMeasSurfAcc::m_detectorElementToGeometryIdMap {nullptr}