Trk::DummyVertexSelectionTool Class Reference

#include <DummyVertexSelectionTool.h>

Inheritance diagram for Trk::DummyVertexSelectionTool:

Collaboration diagram for Trk::DummyVertexSelectionTool:

Public Member Functions
virtual StatusCode	initialize () override
virtual StatusCode	finalize () override
	EndOfInitialize.
	DummyVertexSelectionTool (const std::string &t, const std::string &n, const IInterface *p)
	constructor
virtual	~DummyVertexSelectionTool ()
	destructor
virtual unsigned int	findVertexInContainer (const xAOD::VertexContainer *) const override

Private Attributes
ServiceHandle< IAthRNGSvc >	m_randomSvc { this, "RndmSvc", "AthRNGSvc", ""}
	Pointer to the random number generator service.
std::string	m_randomEngineName
	Name of the random number stream.

Detailed Description

Author

Kirill Prokofiev, January 2012 A test class, meant to be an example of correct implementation for the veretx selector.

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Changes:

David Shope david.nosp@m..ric.nosp@m.hard..nosp@m.shop.nosp@m.e@cer.nosp@m.n.ch (2016-06-01)

EDM Migration to xAOD - replace VxContainer with xAOD::VertexContainer

Definition at line 36 of file DummyVertexSelectionTool.h.

Constructor & Destructor Documentation

DummyVertexSelectionTool()

Trk::DummyVertexSelectionTool::DummyVertexSelectionTool	(	const std::string &	t,
		const std::string &	n,
		const IInterface *	p )

constructor

Definition at line 14 of file DummyVertexSelectionTool.cxx.

    : base_class ( t,n,p ),m_randomEngineName("VertexRnd")
  {
     declareProperty("RandomStreamName",           m_randomEngineName,     "Name of the random number stream");
  }

~DummyVertexSelectionTool()

Trk::DummyVertexSelectionTool::~DummyVertexSelectionTool ( )

virtualdefault

destructor

Member Function Documentation

finalize()

StatusCode Trk::DummyVertexSelectionTool::finalize ( )

overridevirtual

EndOfInitialize.

Definition at line 30 of file DummyVertexSelectionTool.cxx.

   {
     return StatusCode::SUCCESS;
   }

findVertexInContainer()

unsigned int Trk::DummyVertexSelectionTool::findVertexInContainer ( const xAOD::VertexContainer * vertexContainer ) const

overridevirtual

Definition at line 35 of file DummyVertexSelectionTool.cxx.

  {
   if(vertexContainer->size()>2)
   {
 
     // Get the RNG engine.  Reseed if a new event.
     const EventContext& ctx = Gaudi::Hive::currentContext();
     ATHRNG::RNGWrapper* wrapper = m_randomSvc->getEngine(this, m_randomEngineName);
     if (wrapper->evtSeeded (ctx) != ctx.evt()) {
       wrapper->setSeed (name(), ctx);
     }
     CLHEP::HepRandomEngine* engine = wrapper->getEngine (ctx);
   
//only do anything if >1 real vertex is actually present   
     if( CLHEP::RandFlat::shoot(engine)>0.9)
     {
//and only in 10% of cases   let us randomize the vertex choice
     unsigned int ivtx = (unsigned int)( CLHEP::RandFlat::shoot(engine) *  vertexContainer->size());
 
      ATH_MSG_VERBOSE("Vertex Selection changed to " << ivtx << "!");
      return ivtx;
     
     }//end of random selection
     ATH_MSG_VERBOSE("Vertex Selection unchanged!");
     
   }//end of VertexContainer size check
  
//nothing happened, return the default primary vertex position  
   return 0;
  }

initialize()

StatusCode Trk::DummyVertexSelectionTool::initialize ( )

overridevirtual

Definition at line 24 of file DummyVertexSelectionTool.cxx.

  {
    ATH_CHECK( m_randomSvc.retrieve() );
    return StatusCode::SUCCESS;
   }

Member Data Documentation

m_randomEngineName

std::string Trk::DummyVertexSelectionTool::m_randomEngineName

private

Name of the random number stream.

Definition at line 62 of file DummyVertexSelectionTool.h.

m_randomSvc

ServiceHandle<IAthRNGSvc> Trk::DummyVertexSelectionTool::m_randomSvc { this, "RndmSvc", "AthRNGSvc", ""}

private

Pointer to the random number generator service.

< Random Svc

Definition at line 60 of file DummyVertexSelectionTool.h.

{ this, "RndmSvc", "AthRNGSvc", ""};

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

• DummyVertexSelectionTool.h
• DummyVertexSelectionTool.cxx