#include <SlidingWindowMultiSeedFinder.h>

Inheritance diagram for InDet::SlidingWindowMultiSeedFinder:

Collaboration diagram for InDet::SlidingWindowMultiSeedFinder:

Public Member Functions
virtual StatusCode	initialize () override

	SlidingWindowMultiSeedFinder (const std::string &t, const std::string &n, const IInterface *p)
	Constructor and destructor. More...

	~SlidingWindowMultiSeedFinder ()

virtual std::vector< std::vector< const Trk::Track * > >	seeds (const std::vector< const Trk::Track * > &tracks) const override
	Clustering method itself. More...

virtual std::vector< std::vector< const Trk::TrackParameters * > >	seeds (const std::vector< const xAOD::TrackParticle * > &tracks) const override

ServiceHandle< StoreGateSvc > &	evtStore ()
	The standard `StoreGateSvc` (event store) Returns (kind of) a pointer to the `StoreGateSvc`. More...

const ServiceHandle< StoreGateSvc > &	evtStore () const
	The standard `StoreGateSvc` (event store) Returns (kind of) a pointer to the `StoreGateSvc`. More...

const ServiceHandle< StoreGateSvc > &	detStore () const
	The standard `StoreGateSvc/DetectorStore` Returns (kind of) a pointer to the `StoreGateSvc`. More...

virtual StatusCode	sysInitialize () override
	Perform system initialization for an algorithm. More...

virtual StatusCode	sysStart () override
	Handle START transition. More...

virtual std::vector< Gaudi::DataHandle * >	inputHandles () const override
	Return this algorithm's input handles. More...

virtual std::vector< Gaudi::DataHandle * >	outputHandles () const override
	Return this algorithm's output handles. More...

Gaudi::Details::PropertyBase &	declareProperty (Gaudi::Property< T > &t)

Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, SG::VarHandleKey &hndl, const std::string &doc, const SG::VarHandleKeyType &)
	Declare a new Gaudi property. More...

Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, SG::VarHandleBase &hndl, const std::string &doc, const SG::VarHandleType &)
	Declare a new Gaudi property. More...

Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, SG::VarHandleKeyArray &hndArr, const std::string &doc, const SG::VarHandleKeyArrayType &)

Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, T &property, const std::string &doc, const SG::NotHandleType &)
	Declare a new Gaudi property. More...

Gaudi::Details::PropertyBase *	declareProperty (const std::string &name, T &property, const std::string &doc="none")
	Declare a new Gaudi property. More...

void	updateVHKA (Gaudi::Details::PropertyBase &)

MsgStream &	msg () const

MsgStream &	msg (const MSG::Level lvl) const

bool	msgLvl (const MSG::Level lvl) const

Static Public Member Functions
static const InterfaceID &	interfaceID ()
	AlgTool interface methods. More...

Protected Member Functions
void	renounceArray (SG::VarHandleKeyArray &handlesArray)
	remove all handles from I/O resolution More...

std::enable_if_t< std::is_void_v< std::result_of_t< decltype(&T::renounce)(T)> > &&!std::is_base_of_v< SG::VarHandleKeyArray, T > &&std::is_base_of_v< Gaudi::DataHandle, T >, void >	renounce (T &h)

void	extraDeps_update_handler (Gaudi::Details::PropertyBase &ExtraDeps)
	Add StoreName to extra input/output deps as needed. More...

Private Types
typedef ServiceHandle< StoreGateSvc >	StoreGateSvc_t

Private Member Functions
Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T > &hndl, const SG::VarHandleKeyType &)
	specialization for handling Gaudi::Property<SG::VarHandleKey> More...

Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T > &hndl, const SG::VarHandleKeyArrayType &)
	specialization for handling Gaudi::Property<SG::VarHandleKeyArray> More...

Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T > &hndl, const SG::VarHandleType &)
	specialization for handling Gaudi::Property<SG::VarHandleBase> More...

Gaudi::Details::PropertyBase &	declareGaudiProperty (Gaudi::Property< T > &t, const SG::NotHandleType &)
	specialization for handling everything that's not a Gaudi::Property<SG::VarHandleKey> or a <SG::VarHandleKeyArray> More...

Private Attributes
float	m_clusterLength

float	m_breakingDistance

float	m_addingDistance

bool	m_useMaxInCluster

int	m_ignoreLevel

bool	m_ignoreBeamSpot

ToolHandle< Trk::ITrackSelectorTool >	m_trkFilter

ToolHandle< InDetTrackZ0SortingTool >	m_sortingTool

ToolHandle< Trk::IVertexSeedFinder >	m_vtxSeedFinder

SG::ReadCondHandleKey< InDet::BeamSpotData >	m_beamSpotKey { this, "BeamSpotKey", "BeamSpotData", "SG key for beam spot" }

ToolHandle< Trk::IExtrapolator >	m_extrapolator

StoreGateSvc_t	m_evtStore
	Pointer to StoreGate (event store by default) More...

StoreGateSvc_t	m_detStore
	Pointer to StoreGate (detector store by default) More...

std::vector< SG::VarHandleKeyArray * >	m_vhka

bool	m_varHandleArraysDeclared

Detailed Description

Definition at line 28 of file SlidingWindowMultiSeedFinder.h.

Member Typedef Documentation

◆ StoreGateSvc_t

typedef ServiceHandle<StoreGateSvc> AthCommonDataStore< AthCommonMsg< AlgTool > >::StoreGateSvc_t

privateinherited

Definition at line 388 of file AthCommonDataStore.h.

Constructor & Destructor Documentation

◆ SlidingWindowMultiSeedFinder()

InDet::SlidingWindowMultiSeedFinder::SlidingWindowMultiSeedFinder	(	const std::string &	t,
		const std::string &	n,
		const IInterface *	p
	)

Constructor and destructor.

Definition at line 53 of file SlidingWindowMultiSeedFinder.cxx.

                                                                          :AthAlgTool(t,n,p), 
                                                                           m_clusterLength(5.),
                                                                           m_breakingDistance(3.), 
                                                                           m_addingDistance(0.1), 
                                                                           m_useMaxInCluster(false),
                                                                           m_ignoreLevel(0),
                                                                           m_ignoreBeamSpot(false),
                                                                           m_vtxSeedFinder("Trk::CrossDistancesSeedFinder"),
                                                                           m_extrapolator("Trk::Extrapolator") 
  {
   declareInterface<IMultiPVSeedFinder>(this); 
   declareProperty("clusterLength",      m_clusterLength);
   declareProperty("BreakingDistance",   m_breakingDistance);
   declareProperty("AddingDistance",     m_addingDistance);
   declareProperty("UseMaxInCluster",    m_useMaxInCluster);
   declareProperty("IgnoreLevel",    m_ignoreLevel);
   declareProperty("IgnoreBeamSpot", m_ignoreBeamSpot);
   
   //track filter
   declareProperty("TrackSelector", m_trkFilter);
  
   //sorting tool
   declareProperty("SortingTool", m_sortingTool);
  
   //vertex finder tool (needed when no beam spot is available)
   declareProperty("VertexSeedFinder",m_vtxSeedFinder);
   
   //extrapolator
   declareProperty("Extrapolator", m_extrapolator);  
   
  }

◆ ~SlidingWindowMultiSeedFinder()

InDet::SlidingWindowMultiSeedFinder::~SlidingWindowMultiSeedFinder ( )

default

Member Function Documentation

◆ declareGaudiProperty() [1/4]

Gaudi::Details::PropertyBase& AthCommonDataStore< AthCommonMsg< AlgTool > >::declareGaudiProperty	(	Gaudi::Property< T > &	hndl,
		const SG::VarHandleKeyArrayType &
	)

inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleKeyArray>

Definition at line 170 of file AthCommonDataStore.h.

   {
     return *AthCommonDataStore<PBASE>::declareProperty(hndl.name(),
                                                        hndl.value(), 
                                                        hndl.documentation());
  
   }

◆ declareGaudiProperty() [2/4]

Gaudi::Details::PropertyBase& AthCommonDataStore< AthCommonMsg< AlgTool > >::declareGaudiProperty	(	Gaudi::Property< T > &	hndl,
		const SG::VarHandleKeyType &
	)

inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleKey>

Definition at line 156 of file AthCommonDataStore.h.

   {
     return *AthCommonDataStore<PBASE>::declareProperty(hndl.name(),
                                                        hndl.value(), 
                                                        hndl.documentation());
  
   }

◆ declareGaudiProperty() [3/4]

Gaudi::Details::PropertyBase& AthCommonDataStore< AthCommonMsg< AlgTool > >::declareGaudiProperty	(	Gaudi::Property< T > &	hndl,
		const SG::VarHandleType &
	)

inlineprivateinherited

specialization for handling Gaudi::Property<SG::VarHandleBase>

Definition at line 184 of file AthCommonDataStore.h.

   {
     return *AthCommonDataStore<PBASE>::declareProperty(hndl.name(),
                                                        hndl.value(), 
                                                        hndl.documentation());
   }

◆ declareGaudiProperty() [4/4]

Gaudi::Details::PropertyBase& AthCommonDataStore< AthCommonMsg< AlgTool > >::declareGaudiProperty	(	Gaudi::Property< T > &	t,
		const SG::NotHandleType &
	)

inlineprivateinherited

specialization for handling everything that's not a Gaudi::Property<SG::VarHandleKey> or a <SG::VarHandleKeyArray>

Definition at line 199 of file AthCommonDataStore.h.

   {
     return PBASE::declareProperty(t);
   }

◆ declareProperty() [1/6]

Gaudi::Details::PropertyBase* AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty	(	const std::string &	name,
		SG::VarHandleBase &	hndl,
		const std::string &	doc,
		const SG::VarHandleType &
	)

inlineinherited

Declare a new Gaudi property.

Parameters

name	Name of the property.
hndl	Object holding the property value.
doc	Documentation string for the property.

This is the version for types that derive from SG::VarHandleBase. The property value object is put on the input and output lists as appropriate; then we forward to the base class.

Definition at line 245 of file AthCommonDataStore.h.

   {
     this->declare(hndl.vhKey());
     hndl.vhKey().setOwner(this);
  
     return PBASE::declareProperty(name,hndl,doc);
   }

◆ declareProperty() [2/6]

Gaudi::Details::PropertyBase* AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty	(	const std::string &	name,
		SG::VarHandleKey &	hndl,
		const std::string &	doc,
		const SG::VarHandleKeyType &
	)

inlineinherited

Declare a new Gaudi property.

Parameters

name	Name of the property.
hndl	Object holding the property value.
doc	Documentation string for the property.

This is the version for types that derive from SG::VarHandleKey. The property value object is put on the input and output lists as appropriate; then we forward to the base class.

Definition at line 221 of file AthCommonDataStore.h.

   {
     this->declare(hndl);
     hndl.setOwner(this);
  
     return PBASE::declareProperty(name,hndl,doc);
   }

◆ declareProperty() [3/6]

Gaudi::Details::PropertyBase* AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty	(	const std::string &	name,
		SG::VarHandleKeyArray &	hndArr,
		const std::string &	doc,
		const SG::VarHandleKeyArrayType &
	)

inlineinherited

Definition at line 259 of file AthCommonDataStore.h.

   {
  
     // std::ostringstream ost;
     // ost << Algorithm::name() << " VHKA declareProp: " << name 
     //     << " size: " << hndArr.keys().size() 
     //     << " mode: " << hndArr.mode() 
     //     << "  vhka size: " << m_vhka.size()
     //     << "\n";
     // debug() << ost.str() << endmsg;
  
     hndArr.setOwner(this);
     m_vhka.push_back(&hndArr);
  
     Gaudi::Details::PropertyBase* p =  PBASE::declareProperty(name, hndArr, doc);
     if (p != 0) {
       p->declareUpdateHandler(&AthCommonDataStore<PBASE>::updateVHKA, this);
     } else {
       ATH_MSG_ERROR("unable to call declareProperty on VarHandleKeyArray " 
                     << name);
     }
  
     return p;
  
   }

◆ declareProperty() [4/6]

Gaudi::Details::PropertyBase* AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty	(	const std::string &	name,
		T &	property,
		const std::string &	doc,
		const SG::NotHandleType &
	)

inlineinherited

Declare a new Gaudi property.

Parameters

name	Name of the property.
property	Object holding the property value.
doc	Documentation string for the property.

This is the generic version, for types that do not derive from SG::VarHandleKey. It just forwards to the base class version of declareProperty.

Definition at line 333 of file AthCommonDataStore.h.

   {
     return PBASE::declareProperty(name, property, doc);
   }

◆ declareProperty() [5/6]

Gaudi::Details::PropertyBase* AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty	(	const std::string &	name,
		T &	property,
		const std::string &	doc = `"none"`
	)

inlineinherited

Declare a new Gaudi property.

Parameters

name	Name of the property.
property	Object holding the property value.
doc	Documentation string for the property.

This dispatches to either the generic declareProperty or the one for VarHandle/Key/KeyArray.

Definition at line 352 of file AthCommonDataStore.h.

   {
     typedef typename SG::HandleClassifier<T>::type htype;
     return declareProperty (name, property, doc, htype());
   }

◆ declareProperty() [6/6]

Gaudi::Details::PropertyBase& AthCommonDataStore< AthCommonMsg< AlgTool > >::declareProperty ( Gaudi::Property< T > & t )

inlineinherited

Definition at line 145 of file AthCommonDataStore.h.

                                                                  {
     typedef typename SG::HandleClassifier<T>::type htype;
     return AthCommonDataStore<PBASE>::declareGaudiProperty(t, htype());
   }

◆ detStore()

const ServiceHandle<StoreGateSvc>& AthCommonDataStore< AthCommonMsg< AlgTool > >::detStore ( ) const

inlineinherited

The standard StoreGateSvc/DetectorStore Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 95 of file AthCommonDataStore.h.

95 { return m_detStore; }

◆ evtStore() [1/2]

ServiceHandle<StoreGateSvc>& AthCommonDataStore< AthCommonMsg< AlgTool > >::evtStore ( )

inlineinherited

The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 85 of file AthCommonDataStore.h.

85 { return m_evtStore; }

◆ evtStore() [2/2]

const ServiceHandle<StoreGateSvc>& AthCommonDataStore< AthCommonMsg< AlgTool > >::evtStore ( ) const

inlineinherited

The standard StoreGateSvc (event store) Returns (kind of) a pointer to the StoreGateSvc.

Definition at line 90 of file AthCommonDataStore.h.

90 { return m_evtStore; }

◆ extraDeps_update_handler()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::extraDeps_update_handler ( Gaudi::Details::PropertyBase & ExtraDeps )

protectedinherited

Add StoreName to extra input/output deps as needed.

use the logic of the VarHandleKey to parse the DataObjID keys supplied via the ExtraInputs and ExtraOuputs Properties to add the StoreName if it's not explicitly given

◆ initialize()

StatusCode InDet::SlidingWindowMultiSeedFinder::initialize ( )

overridevirtual

Definition at line 18 of file SlidingWindowMultiSeedFinder.cxx.

  {
   if(m_trkFilter.retrieve().isFailure())
   {
    ATH_MSG_ERROR(" Unable to retrieve "<<m_trkFilter);
    return StatusCode::FAILURE;
   }
   ATH_MSG_DEBUG("Track selector tool retrieved");
  
   if(m_sortingTool.retrieve().isFailure()){
    ATH_MSG_ERROR(" Unable to retrieve "<<m_sortingTool);
    return StatusCode::FAILURE;
   }
   ATH_MSG_DEBUG("Track sorting tool retrieved");
    
   ATH_CHECK(m_beamSpotKey.initialize());
  
   if(m_vtxSeedFinder.retrieve().isFailure())
   {
    ATH_MSG_ERROR("Unable to retrieve " << m_vtxSeedFinder);
    return StatusCode::FAILURE;
   }
   ATH_MSG_DEBUG("Vertex seed finder retriever");
     
   if(m_extrapolator.retrieve().isFailure())
   {
    ATH_MSG_ERROR("Failed to retrieve tool " << m_extrapolator);
    return StatusCode::FAILURE;
   }
   ATH_MSG_DEBUG("Retrieved tool " << m_extrapolator);
  
   return StatusCode::SUCCESS;
  }//end of initialize mtehod

◆ inputHandles()

virtual std::vector<Gaudi::DataHandle*> AthCommonDataStore< AthCommonMsg< AlgTool > >::inputHandles ( ) const

overridevirtualinherited

Return this algorithm's input handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

◆ interfaceID()

static const InterfaceID& InDet::IMultiPVSeedFinder::interfaceID ( )

inlinestaticinherited

AlgTool interface methods.

Definition at line 48 of file IMultiPVSeedFinder.h.

48 { return IID_IMultiPVSeedFinder; };

◆ msg() [1/2]

MsgStream& AthCommonMsg< AlgTool >::msg ( ) const

inlineinherited

Definition at line 24 of file AthCommonMsg.h.

                                 {
     return this->msgStream();
   }

◆ msg() [2/2]

MsgStream& AthCommonMsg< AlgTool >::msg ( const MSG::Level lvl ) const

inlineinherited

Definition at line 27 of file AthCommonMsg.h.

                                                   {
     return this->msgStream(lvl);
   }

◆ msgLvl()

bool AthCommonMsg< AlgTool >::msgLvl ( const MSG::Level lvl ) const

inlineinherited

Definition at line 30 of file AthCommonMsg.h.

                                                {
     return this->msgLevel(lvl);
   }

◆ outputHandles()

virtual std::vector<Gaudi::DataHandle*> AthCommonDataStore< AthCommonMsg< AlgTool > >::outputHandles ( ) const

overridevirtualinherited

Return this algorithm's output handles.

We override this to include handle instances from key arrays if they have not yet been declared. See comments on updateVHKA.

◆ renounce()

std::enable_if_t<std::is_void_v<std::result_of_t<decltype(&T::renounce)(T)> > && !std::is_base_of_v<SG::VarHandleKeyArray, T> && std::is_base_of_v<Gaudi::DataHandle, T>, void> AthCommonDataStore< AthCommonMsg< AlgTool > >::renounce ( T & h )

inlineprotectedinherited

Definition at line 380 of file AthCommonDataStore.h.

   {
     h.renounce();
     PBASE::renounce (h);
   }

◆ renounceArray()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::renounceArray ( SG::VarHandleKeyArray & handlesArray )

inlineprotectedinherited

remove all handles from I/O resolution

Definition at line 364 of file AthCommonDataStore.h.

                                                           {
     handlesArray.renounce();
   }

◆ seeds() [1/2]

std::vector< std::vector< const Trk::Track * > > InDet::SlidingWindowMultiSeedFinder::seeds ( const std::vector< const Trk::Track * > & tracks ) const

overridevirtual

Clustering method itself.

Implements InDet::IMultiPVSeedFinder.

Definition at line 89 of file SlidingWindowMultiSeedFinder.cxx.

  {
   const EventContext& ctx = Gaudi::Hive::currentContext();
   std::vector<const Trk::Track*> preselectedTracks(0);
   std::vector<const Trk::Track*>::const_iterator tr = tracks.begin();
   std::vector<const Trk::Track*>::const_iterator tre = tracks.end(); 
   
   SG::ReadCondHandle<InDet::BeamSpotData> beamSpotHandle { m_beamSpotKey, ctx };
   Trk::RecVertex  beamRecVertex(beamSpotHandle->beamVtx());
   for(;tr!=tre;++tr) if(m_trkFilter->decision(**tr,&beamRecVertex)) preselectedTracks.push_back(*tr);
   ATH_MSG_DEBUG("Beam spot position is: "<< beamRecVertex.position());
  
   Trk::Vertex* beamVertex=&beamRecVertex;
   
   Trk::Vertex myVertex;
   if (m_ignoreBeamSpot)
   {
    myVertex = Trk::Vertex(m_vtxSeedFinder->findSeed(tracks));
    ATH_MSG_DEBUG(" vtx seed x: " << myVertex.position().x() <<
          " vtx seed y: " << myVertex.position().y() <<
          " vtx seed z: " << myVertex.position().z());
    beamVertex = &myVertex;
   }
  
   //output container
   std::vector< std::vector<const Trk::Track *> > result(0);
  
   //sorting the tracks on their z_0 basis.
   if(!preselectedTracks.empty())
   {
    std::vector<int> indexOfSorted = m_sortingTool->sortedIndex(preselectedTracks,beamVertex);  
  
    std::vector<const Trk::Track *> tmp_cluster(0); 
  
    Trk::PerigeeSurface perigeeSurface(beamVertex->position());
  
    const Trk::TrackParameters * exPerigee = nullptr;
    if(!indexOfSorted.empty()){
     exPerigee =
       m_extrapolator
       ->extrapolateTrack(ctx, *preselectedTracks[indexOfSorted[0]], perigeeSurface, Trk::anyDirection, true, Trk::pion)
       .release();
    }
  
    float lastTrackZ0  = -999.;
    if(exPerigee) { lastTrackZ0 = exPerigee->parameters()[Trk::z0]; delete exPerigee; }
    else {
     ATH_MSG_WARNING("Impossible to extrapolate the first track; returning 0 container for this event");
     return result;
    }                 
                
    //looping over sorted container:
    //storing the Z0 of last iteration...
    float prevTrackZ0 = 0.;
  
    float addingDistance = m_addingDistance;
    if(m_useMaxInCluster) addingDistance = 0.;
    for(unsigned int i=0;i<indexOfSorted.size();++i)
    {
     const  Trk::TrackParameters * lexPerigee = m_extrapolator->extrapolateTrack(ctx, *preselectedTracks[indexOfSorted[i]],
                                        perigeeSurface,Trk::anyDirection,true, Trk::pion).release(); 
     float currentTrackZ0 = lexPerigee->parameters()[Trk::z0];
     delete lexPerigee;
     
     if(!i) prevTrackZ0 = currentTrackZ0; 
      
     ATH_MSG_DEBUG("Z0 of current  track"<< currentTrackZ0);
     
     if((std::abs(currentTrackZ0 - lastTrackZ0)>m_clusterLength &&
     std::abs(currentTrackZ0 - prevTrackZ0)>addingDistance) ||
        std::abs(currentTrackZ0 - prevTrackZ0)>m_breakingDistance)
     {
      //this track is outside the current cluster
      if(int(tmp_cluster.size())>m_ignoreLevel) result.push_back(tmp_cluster);
      tmp_cluster.clear();
      tmp_cluster.push_back(preselectedTracks[indexOfSorted[i]]);
      lastTrackZ0 = currentTrackZ0;
     }else{
      //this track is within the current cluster
      tmp_cluster.push_back(preselectedTracks[indexOfSorted[i]]);
      //checking whethet this is the last track in list
      if(i==indexOfSorted.size()-1 && int(tmp_cluster.size())>m_ignoreLevel) result.push_back(tmp_cluster);
     }//end of check for the cluster size
         
     //making adding distance max in cluster
     if(m_useMaxInCluster){
       float diff = std::abs(currentTrackZ0-prevTrackZ0);
       if(addingDistance < diff) addingDistance = diff; 
     }//end of  using max in cluster
     prevTrackZ0 = currentTrackZ0;
    }//end of loop over the sorted container, using sorted index
   
   }//end of check for successfull preselection
    
   return result;
  }//end of seeding method

◆ seeds() [2/2]

std::vector< std::vector< const Trk::TrackParameters * > > InDet::SlidingWindowMultiSeedFinder::seeds ( const std::vector< const xAOD::TrackParticle * > & tracks ) const

overridevirtual

Implements InDet::IMultiPVSeedFinder.

Definition at line 187 of file SlidingWindowMultiSeedFinder.cxx.

   {
     const EventContext& ctx = Gaudi::Hive::currentContext();
     //step 1: preselection 
     std::vector<const xAOD::TrackParticle*> preselectedTracks(0);
     
     //selecting with respect to the beam spot
     xAOD::Vertex beamposition;
     SG::ReadCondHandle<InDet::BeamSpotData> beamSpotHandle { m_beamSpotKey };
     beamposition.setPosition(beamSpotHandle->beamVtx().position());
     beamposition.setCovariancePosition(beamSpotHandle->beamVtx().covariancePosition());
  
     for (const auto *track : tracks) {
       if (m_trkFilter->decision(*track,&beamposition)) preselectedTracks.push_back(track);
     }
     
     std::vector<const Trk::TrackParameters*> perigeeList;
     std::vector<const xAOD::TrackParticle*>::const_iterator trackBegin=tracks.begin();
     std::vector<const xAOD::TrackParticle*>::const_iterator trackEnd=tracks.end();
     for (std::vector<const xAOD::TrackParticle*>::const_iterator trackIter=trackBegin;trackIter!=trackEnd;++trackIter)
       {
     perigeeList.push_back(&((*trackIter)->perigeeParameters()));
       }
  
     Trk::RecVertex myVertex (m_vtxSeedFinder->findSeed(perigeeList));
    
     if (m_ignoreBeamSpot)
       {
     ATH_MSG_DEBUG(" vtx seed x: " << myVertex.position().x() <<
               " vtx seed y: " << myVertex.position().y() <<
               " vtx seed z: " << myVertex.position().z());
     beamposition.setPosition(myVertex.position());
     beamposition.setCovariancePosition(myVertex.covariancePosition());
       }
     
     //step 2: sorting in z0
     //output container  
     std::vector< std::vector<const Trk::TrackParameters *> > result(0);
     if(!preselectedTracks.empty())
       {
     std::vector<int> indexOfSorted = m_sortingTool->sortedIndex(preselectedTracks, &beamposition);
     
     std::vector<const Trk::TrackParameters *> tmp_cluster(0); 
     
     //extrapolating the tracks to the actual beam spot   
     const Trk::TrackParameters * exPerigee(nullptr);
     Trk::PerigeeSurface perigeeSurface(beamposition.position());
     
     exPerigee = m_extrapolator->extrapolate(ctx, preselectedTracks[indexOfSorted[0]]->perigeeParameters(),
                         perigeeSurface,Trk::anyDirection,true, Trk::pion).release();
     
     float lastTrackZ0  = -999.;
     if(exPerigee) { lastTrackZ0 = exPerigee->parameters()[Trk::z0]; delete exPerigee; }
     else
       {
         ATH_MSG_WARNING("Impossible to extrapolate the first track; returning 0 container for this event");
         return result;
       }                
     
     ATH_MSG_DEBUG("Z0 of last track"<< lastTrackZ0);
  
     //looping over sorted container:  storing the Z0 of last iteration...
     float prevTrackZ0 =0.;
  
         float addingDistance = m_addingDistance;
     if(m_useMaxInCluster) addingDistance = 0.;
     
     for(unsigned int i=0;i<indexOfSorted.size();++i){
  
           const Trk::TrackParameters* lexPerigee =
             m_extrapolator
               ->extrapolate(
                 ctx, 
                 preselectedTracks[indexOfSorted[i]]->perigeeParameters(), 
                 perigeeSurface, 
                 Trk::anyDirection, 
                 true, Trk::pion).release();
           float currentTrackZ0 = lexPerigee->parameters()[Trk::z0];
           delete lexPerigee;
  
           if(!i) prevTrackZ0 = currentTrackZ0;
           ATH_MSG_DEBUG("Z0 of current  track" << currentTrackZ0);
  
           if ((std::abs(currentTrackZ0 - lastTrackZ0) > m_clusterLength &&
                std::abs(currentTrackZ0 - prevTrackZ0) > addingDistance) ||
               std::abs(currentTrackZ0 - prevTrackZ0) > m_breakingDistance) {
             // this track is outside the current cluster or the distance is too big. breaking the cluster here
             if (int(tmp_cluster.size()) > m_ignoreLevel) result.push_back(tmp_cluster);
             tmp_cluster.clear();
             tmp_cluster.push_back(&(preselectedTracks[indexOfSorted[i]]->perigeeParameters()));
             lastTrackZ0 = currentTrackZ0;
         ATH_MSG_DEBUG("Finishing a cluster, starting the new one");
       }else{
         //this track is within the current cluster  or the distance to next is too short. Keeping populating it.
         tmp_cluster.push_back(&(preselectedTracks[indexOfSorted[i]]->perigeeParameters()));
         ATH_MSG_DEBUG("Pushing a track to a cluster");
  
         if(i==indexOfSorted.size()-1 && int(tmp_cluster.size())>m_ignoreLevel) result.push_back(tmp_cluster);
  
       }//end of check for the cluster size
         
       //making adding distance max in cluster
       if(m_useMaxInCluster)
         {
           float diff = std::abs(currentTrackZ0-prevTrackZ0);
           if(addingDistance < diff) addingDistance = diff;
         }//end of  using max in cluster
       prevTrackZ0 = currentTrackZ0;
     }//end of loop
       }//end of preselection size check
     
     ATH_MSG_DEBUG("Returning number of clusters: "<< result.size());
     return result;
  
   }

◆ sysInitialize()

virtual StatusCode AthCommonDataStore< AthCommonMsg< AlgTool > >::sysInitialize ( )

overridevirtualinherited

Perform system initialization for an algorithm.

We override this to declare all the elements of handle key arrays at the end of initialization. See comments on updateVHKA.

Reimplemented in DerivationFramework::CfAthAlgTool, AthCheckedComponent< AthAlgTool >, AthCheckedComponent<::AthAlgTool >, and asg::AsgMetadataTool.

◆ sysStart()

virtual StatusCode AthCommonDataStore< AthCommonMsg< AlgTool > >::sysStart ( )

overridevirtualinherited

Handle START transition.

We override this in order to make sure that conditions handle keys can cache a pointer to the conditions container.

◆ updateVHKA()

void AthCommonDataStore< AthCommonMsg< AlgTool > >::updateVHKA ( Gaudi::Details::PropertyBase & )

inlineinherited

Definition at line 308 of file AthCommonDataStore.h.

                                                {
     // debug() << "updateVHKA for property " << p.name() << " " << p.toString() 
     //         << "  size: " << m_vhka.size() << endmsg;
     for (auto &a : m_vhka) {
       std::vector<SG::VarHandleKey*> keys = a->keys();
       for (auto k : keys) {
         k->setOwner(this);
       }
     }
   }

Member Data Documentation

◆ m_addingDistance

float InDet::SlidingWindowMultiSeedFinder::m_addingDistance

private

Definition at line 55 of file SlidingWindowMultiSeedFinder.h.

◆ m_beamSpotKey

SG::ReadCondHandleKey<InDet::BeamSpotData> InDet::SlidingWindowMultiSeedFinder::m_beamSpotKey { this, "BeamSpotKey", "BeamSpotData", "SG key for beam spot" }

private

Definition at line 65 of file SlidingWindowMultiSeedFinder.h.

◆ m_breakingDistance

float InDet::SlidingWindowMultiSeedFinder::m_breakingDistance

private

Definition at line 54 of file SlidingWindowMultiSeedFinder.h.

◆ m_clusterLength

float InDet::SlidingWindowMultiSeedFinder::m_clusterLength

private

Definition at line 53 of file SlidingWindowMultiSeedFinder.h.

◆ m_detStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< AlgTool > >::m_detStore

privateinherited

Pointer to StoreGate (detector store by default)

Definition at line 393 of file AthCommonDataStore.h.

◆ m_evtStore

StoreGateSvc_t AthCommonDataStore< AthCommonMsg< AlgTool > >::m_evtStore

privateinherited

Pointer to StoreGate (event store by default)

Definition at line 390 of file AthCommonDataStore.h.

◆ m_extrapolator

ToolHandle<Trk::IExtrapolator> InDet::SlidingWindowMultiSeedFinder::m_extrapolator

private

Definition at line 66 of file SlidingWindowMultiSeedFinder.h.

◆ m_ignoreBeamSpot

bool InDet::SlidingWindowMultiSeedFinder::m_ignoreBeamSpot

private

Definition at line 58 of file SlidingWindowMultiSeedFinder.h.

◆ m_ignoreLevel

int InDet::SlidingWindowMultiSeedFinder::m_ignoreLevel

private

Definition at line 57 of file SlidingWindowMultiSeedFinder.h.

◆ m_sortingTool

ToolHandle<InDetTrackZ0SortingTool> InDet::SlidingWindowMultiSeedFinder::m_sortingTool

private

Definition at line 61 of file SlidingWindowMultiSeedFinder.h.

◆ m_trkFilter

ToolHandle<Trk::ITrackSelectorTool> InDet::SlidingWindowMultiSeedFinder::m_trkFilter

private

Definition at line 60 of file SlidingWindowMultiSeedFinder.h.

◆ m_useMaxInCluster

bool InDet::SlidingWindowMultiSeedFinder::m_useMaxInCluster

private

Definition at line 56 of file SlidingWindowMultiSeedFinder.h.

◆ m_varHandleArraysDeclared

bool AthCommonDataStore< AthCommonMsg< AlgTool > >::m_varHandleArraysDeclared

privateinherited

Definition at line 399 of file AthCommonDataStore.h.

◆ m_vhka

std::vector<SG::VarHandleKeyArray*> AthCommonDataStore< AthCommonMsg< AlgTool > >::m_vhka

privateinherited

Definition at line 398 of file AthCommonDataStore.h.

◆ m_vtxSeedFinder

ToolHandle<Trk::IVertexSeedFinder> InDet::SlidingWindowMultiSeedFinder::m_vtxSeedFinder

private

Definition at line 62 of file SlidingWindowMultiSeedFinder.h.

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

Public Member Functions

Static Public Member Functions

Protected Member Functions

Private Types

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ StoreGateSvc_t

Constructor & Destructor Documentation

◆ SlidingWindowMultiSeedFinder()

◆ ~SlidingWindowMultiSeedFinder()

Member Function Documentation

◆ declareGaudiProperty() [1/4]

◆ declareGaudiProperty() [2/4]

◆ declareGaudiProperty() [3/4]

◆ declareGaudiProperty() [4/4]

◆ declareProperty() [1/6]

◆ declareProperty() [2/6]

◆ declareProperty() [3/6]

◆ declareProperty() [4/6]

◆ declareProperty() [5/6]

◆ declareProperty() [6/6]

◆ detStore()

◆ evtStore() [1/2]

◆ evtStore() [2/2]

◆ extraDeps_update_handler()

◆ initialize()

◆ inputHandles()

◆ interfaceID()

◆ msg() [1/2]

◆ msg() [2/2]

◆ msgLvl()

◆ outputHandles()

◆ renounce()

◆ renounceArray()

◆ seeds() [1/2]

◆ seeds() [2/2]

◆ sysInitialize()

◆ sysStart()

◆ updateVHKA()

Member Data Documentation

◆ m_addingDistance

◆ m_beamSpotKey

◆ m_breakingDistance

◆ m_clusterLength

◆ m_detStore

◆ m_evtStore

◆ m_extrapolator

◆ m_ignoreBeamSpot

◆ m_ignoreLevel

◆ m_sortingTool

◆ m_trkFilter

◆ m_useMaxInCluster

◆ m_varHandleArraysDeclared

◆ m_vhka

◆ m_vtxSeedFinder