GlobalSim::GlobalCellTowerAlgTool Class Reference

#include <GlobalCellTowerAlgTool.h>

Inheritance diagram for GlobalSim::GlobalCellTowerAlgTool:

Collaboration diagram for GlobalSim::GlobalCellTowerAlgTool:

Public Member Functions
	GlobalCellTowerAlgTool (const std::string &type, const std::string &name, const IInterface *parent)
	Main constructor. More...
	~GlobalCellTowerAlgTool () override=default
	Main destructor (explicitly defaulted) More...
virtual StatusCode	initialize () override
	Initialize function running before first event. More...
virtual StatusCode	run (const EventContext &ctx) const override
	Main functional block running for each event. More...
virtual std::string	toString () const override
	Overriding toString function from base class. More...

Static Public Member Functions
static std::string	toBinary (int value, int width)
	Helper function to convert floating point values into a bitstream. More...
static std::string	makeTowerBits (int energy, int etaBin, int phiBin)
	Function which assembles the TOB bitstream for a tower. More...

Private Attributes
SG::ReadHandleKey< GlobalSim::GlobalLArCellContainer >	m_gblLArCellContainerKey {this, "GlobalLArCellsKey", "GlobalLArCells", "Key for the output container of the LAr cells sent to Global"}
	Key to the GlobalLArCellContainer. More...
SG::WriteHandleKey< GenericTobContainer >	m_gblCellTowers {this, "GlobalCellTowersKey", "GlobalCellTowers", "Key to the container of generic TOBS containing the cell towers"}
	Write key for the output cell towers as a GenericTobContainer. More...

Detailed Description

Definition at line 29 of file GlobalCellTowerAlgTool.h.

Constructor & Destructor Documentation

GlobalCellTowerAlgTool()

GlobalSim::GlobalCellTowerAlgTool::GlobalCellTowerAlgTool	(	const std::string &	type,
		const std::string &	name,
		const IInterface *	parent
	)

Main constructor.

Definition at line 12 of file GlobalCellTowerAlgTool.cxx.

                                                                                                                       :
    base_class(type, name, parent) {
  }

~GlobalCellTowerAlgTool()

GlobalSim::GlobalCellTowerAlgTool::~GlobalCellTowerAlgTool ( )

overridedefault

Main destructor (explicitly defaulted)

Member Function Documentation

initialize()

StatusCode GlobalSim::GlobalCellTowerAlgTool::initialize ( )

overridevirtual

Initialize function running before first event.

Definition at line 18 of file GlobalCellTowerAlgTool.cxx.

                                                {
       
    CHECK(m_gblLArCellContainerKey.initialize());
    CHECK(m_gblCellTowers.initialize());
 
    return StatusCode::SUCCESS;
  }

makeTowerBits()

std::string GlobalSim::GlobalCellTowerAlgTool::makeTowerBits ( int  energy, int  etaBin, int  phiBin  )

static

Function which assembles the TOB bitstream for a tower.

Definition at line 81 of file GlobalCellTowerAlgTool.cxx.

                                                                                    {
      return GlobalCellTowerAlgTool::toBinary(energy, 13) +
          GlobalCellTowerAlgTool::toBinary(etaBin, 9) +
          GlobalCellTowerAlgTool::toBinary(phiBin, 7) +
          std::string(3, '0');
  }

run()

StatusCode GlobalSim::GlobalCellTowerAlgTool::run ( const EventContext &  ctx ) const

overridevirtual

Main functional block running for each event.

Definition at line 28 of file GlobalCellTowerAlgTool.cxx.

                                                                      {
 
    ATH_MSG_DEBUG("Building cell towers");
 
    // Read in GlobalLArCellContainer
    auto h_gblLArCells = SG::makeHandle(m_gblLArCellContainerKey, ctx);
    CHECK(h_gblLArCells.isValid());
    const auto & gblLArCells = *h_gblLArCells;
 
    // Define tower array (98 eta bins x 64 phi bins)
    static constexpr int nEta{98};
    static constexpr int nPhi{64};
 
    auto pTowerEnergies = std::make_unique<std::array<std::array<float, nPhi>, nEta>>();
    auto & towerEnergies = *pTowerEnergies;
    for (const auto& cell : gblLArCells) {
 
        // Compute eta and phi indices (binning in steps of 0.1)
        int eta_index = static_cast<int>(std::floor(cell->eta() * 10)) + 49;
        int phi_index = static_cast<int>(std::floor(cell->phi() * 10)) + 32;
 
        // Ensure indices are within bounds
        if (eta_index < 0 || eta_index >= nEta || phi_index < 0 || phi_index >= nPhi) continue;
 
        // Add cell energy to the corresponding tower
        towerEnergies[eta_index][phi_index] += cell->getEnergy();
    }
 
    auto h_towerTOBs = SG::makeHandle(m_gblCellTowers, ctx);
    auto towers = std::make_unique<GenericTobContainer>();
    towers->reserve(nEta * nPhi);
 
    for (int etaBin = 0; etaBin < nEta; ++etaBin) {
        for (int phiBin = 0; phiBin < nPhi; ++phiBin) {
 
           if (towerEnergies[etaBin][phiBin] == 0) continue;
           int energyBits = std::clamp(static_cast<int>(towerEnergies[etaBin][phiBin]), 0, (1 << 13) - 1);
 
           std::string bit_string = makeTowerBits(energyBits, etaBin, phiBin);
 
           towers->emplace_back(std::make_shared<GenericTob>(bit_string));
        }
    }
 
    ATH_MSG_DEBUG("Built " << towers->size() << " cell towers and stored them as GenericTobs");
 
    CHECK(h_towerTOBs.record(std::move(towers))); 
 
    return StatusCode::SUCCESS;
  }

toBinary()

static std::string GlobalSim::GlobalCellTowerAlgTool::toBinary ( int  value, int  width  )

inlinestatic

Helper function to convert floating point values into a bitstream.

Definition at line 46 of file GlobalCellTowerAlgTool.h.

                                                    { 
        assert(width <= 32);
        return std::bitset<32>(value).to_string().substr(32 - width); 
    }

toString()

std::string GlobalSim::GlobalCellTowerAlgTool::toString ( ) const

overridevirtual

Overriding toString function from base class.

Definition at line 90 of file GlobalCellTowerAlgTool.cxx.

                                                   {
      return {};
  }

Member Data Documentation

m_gblCellTowers

SG::WriteHandleKey<GenericTobContainer> GlobalSim::GlobalCellTowerAlgTool::m_gblCellTowers {this, "GlobalCellTowersKey", "GlobalCellTowers", "Key to the container of generic TOBS containing the cell towers"}

private

Write key for the output cell towers as a GenericTobContainer.

Definition at line 63 of file GlobalCellTowerAlgTool.h.

m_gblLArCellContainerKey

SG::ReadHandleKey<GlobalSim::GlobalLArCellContainer> GlobalSim::GlobalCellTowerAlgTool::m_gblLArCellContainerKey {this, "GlobalLArCellsKey", "GlobalLArCells", "Key for the output container of the LAr cells sent to Global"}

private

Key to the GlobalLArCellContainer.

Definition at line 60 of file GlobalCellTowerAlgTool.h.

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

• GlobalCellTowerAlgTool.h
• GlobalCellTowerAlgTool.cxx