Gep::WFSClusterMaker Class Reference

#include <WFSClusterMaker.h>

Inheritance diagram for Gep::WFSClusterMaker:

Collaboration diagram for Gep::WFSClusterMaker:

Public Member Functions
	WFSClusterMaker ()
	~WFSClusterMaker ()
std::vector< Gep::Cluster >	makeClusters (const pGepCellMap &) const override
std::string	getName () const override

Private Member Functions
bool	isSeedCell (const Gep::CustomCaloCell &cell) const
bool	isInAllowedSampling (int sampling, const std::vector< int > &list_of_samplings) const
bool	isNewCell (unsigned int id, const std::vector< unsigned int > &seenCells) const
std::vector< Gep::CustomCaloCell >	clusterFromCells (const Gep::CustomCaloCell &seed, const pGepCellMap &) const
Gep::Cluster	getClusterFromListOfCells (const std::vector< Gep::CustomCaloCell > &cells) const
double	calculateClusterPhi (double seed_phi, double delta_phi) const
void	orderClustersInEt (std::vector< Gep::Cluster > &v_clusters) const
double	getDeltaPhi (double phi, double seed_phi) const

Private Attributes
float	m_seed_threshold = 4.0
float	m_clustering_threshold = 2.0
int	m_max_shells = 8
std::vector< int >	m_allowed_seed_samplings = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}
std::vector< int >	m_allowed_clustering_samplings = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}

Detailed Description

Definition at line 14 of file WFSClusterMaker.h.

Constructor & Destructor Documentation

WFSClusterMaker()

Gep::WFSClusterMaker::WFSClusterMaker ( )

inline

Definition at line 18 of file WFSClusterMaker.h.

{}

~WFSClusterMaker()

Gep::WFSClusterMaker::~WFSClusterMaker ( )

inline

Definition at line 19 of file WFSClusterMaker.h.

{}

Member Function Documentation

calculateClusterPhi()

double Gep::WFSClusterMaker::calculateClusterPhi ( double  seed_phi, double  delta_phi  ) const

private

Definition at line 157 of file WFSClusterMaker.cxx.

                                                                                      {
  double phi = seed_phi + delta_phi;
  if (phi > TMath::Pi()) phi = -1.0*TMath::Pi() + (phi - TMath::Pi());
  if (phi < (-1.0)*TMath::Pi()) phi = TMath::Pi() + (phi + TMath::Pi());
  return phi;
}

clusterFromCells()

std::vector< Gep::CustomCaloCell > Gep::WFSClusterMaker::clusterFromCells ( const Gep::CustomCaloCell &  seed, const pGepCellMap &  caloCellsMap  ) const

private

Definition at line 63 of file WFSClusterMaker.cxx.

                                                             {
 
  std::vector<Gep::CustomCaloCell> v_clusterCells;
 
  std::vector<Gep::CustomCaloCell> cellsNextLayer, cellsThisLayer;
  std::vector<unsigned int> seenCells;
 
  // Fill seed into supporting vectors
  v_clusterCells.push_back(seed);
  cellsNextLayer.push_back(seed);
  seenCells.push_back(seed.id);
 
  int i_shell = 1;
 
  while (!cellsNextLayer.empty() && i_shell <= m_max_shells) {
 
        cellsThisLayer = cellsNextLayer;
        cellsNextLayer.clear();
        ++i_shell;
 
        // Loop over all cells in this shell
        for (unsigned int i_cell = 0; i_cell < cellsThisLayer.size(); ++i_cell) {
 
                // Go through list of neighbouring cells and check whether they are part of the cluster
                for (unsigned int i_neighbour = 0; i_neighbour < (cellsThisLayer[i_cell]).neighbours.size(); ++i_neighbour) {
            Gep::CustomCaloCell neighbour = caloCellsMap->at((cellsThisLayer[i_cell]).neighbours[i_neighbour]);
 
                        // reject if bad cell
                        if (neighbour.isBadCell()) continue;
 
                        // Reject if cell is not above clustering threshold
                        if (fabs(neighbour.sigma) < m_clustering_threshold) continue;
 
                        // Reject if cell was already considered
                        if (!isNewCell(neighbour.id, seenCells)) continue;
 
                        // Ignore cells in disallowed samplings
                        if (!isInAllowedSampling(neighbour.sampling, m_allowed_clustering_samplings)) continue;
 
                        seenCells.push_back(neighbour.id);
                        cellsNextLayer.push_back(neighbour);
                        v_clusterCells.push_back(neighbour);
                }
        }
        cellsThisLayer.clear();
  }
 
  return v_clusterCells;
}

getClusterFromListOfCells()

Gep::Cluster Gep::WFSClusterMaker::getClusterFromListOfCells ( const std::vector< Gep::CustomCaloCell > &  cells ) const

private

Definition at line 115 of file WFSClusterMaker.cxx.

                                                                                                        {
 
  Gep::Cluster cluster;
 
  std::vector<unsigned int> v_cellIDs;
  double cluster_e = 0.0;
  double etaSum = 0.0;
  double phiSum = 0.0;
  double abs_e = 0.0;
  float weight = 0.0;
 
  double seed_phi = cells[0].phi;
  for (unsigned int i_cell = 0; i_cell < cells.size(); ++i_cell) {
        cluster_e += cells[i_cell].e;
        abs_e += fabs(cells[i_cell].e);
        v_cellIDs.push_back(cells[i_cell].id);
        etaSum += fabs(cells[i_cell].e) * cells[i_cell].eta;
        phiSum += fabs(cells[i_cell].e) * getDeltaPhi(cells[i_cell].phi, seed_phi);
        if (fabs(cells[i_cell].sigma) > m_seed_threshold) weight += 1.0;
  }
 
  cluster.ncells = cells.size();
  cluster.time = cells[0].time; // Take time of seed cell
  cluster.cell_id = v_cellIDs;
 
  double cluster_eta = etaSum / abs_e;
  double cluster_phi = calculateClusterPhi(seed_phi, phiSum / abs_e);
  double cluster_et = (cluster_e * (1.0 / std::cosh(cluster_eta))) / weight;
  cluster.setEtEtaPhi(cluster_et, cluster_eta, cluster_phi);
 
  return cluster;
}

getDeltaPhi()

double Gep::WFSClusterMaker::getDeltaPhi ( double  phi, double  seed_phi  ) const

private

Definition at line 149 of file WFSClusterMaker.cxx.

                                                                        {
  double delta_phi = fabs(fabs( fabs( phi - seed_phi ) - TMath::Pi() ) - TMath::Pi());
  if (phi < seed_phi) delta_phi *= -1.00;
  // Taking care of the -pi/pi split
  if ((fabs(phi + seed_phi) < TMath::Pi()) && (fabs(phi) + fabs(seed_phi) > 5.0)) delta_phi *= -1.00;
  return delta_phi;
}

getName()

std::string Gep::WFSClusterMaker::getName ( ) const

overridevirtual

Implements Gep::IClusterMaker.

Definition at line 196 of file WFSClusterMaker.cxx.

                                            {
  return "CaloWFS";
}

isInAllowedSampling()

bool Gep::WFSClusterMaker::isInAllowedSampling ( int  sampling, const std::vector< int > &  list_of_samplings  ) const

private

Definition at line 43 of file WFSClusterMaker.cxx.

                                                                                                        {
 
  for (unsigned int i = 0; i < list_of_samplings.size(); ++i) {
    if (list_of_samplings[i] == sampling) return true;
  }
  return false;
}

isNewCell()

bool Gep::WFSClusterMaker::isNewCell ( unsigned int  id, const std::vector< unsigned int > &  seenCells  ) const

private

Definition at line 52 of file WFSClusterMaker.cxx.

                                                                                                  {
 
  for (unsigned int i = 0; i < seenCells.size(); ++i) {
        if (id == seenCells[i]) return false;
  }
 
  return true;
}

isSeedCell()

bool Gep::WFSClusterMaker::isSeedCell ( const Gep::CustomCaloCell &  cell ) const

private

Definition at line 33 of file WFSClusterMaker.cxx.

                                                                        {
 
  if (cell.isBadCell()) return false;
  if (fabs(cell.sigma) < m_seed_threshold) return false;
  if (!isInAllowedSampling(cell.sampling, m_allowed_seed_samplings)) return false;
 
  return true;
}

makeClusters()

std::vector< Gep::Cluster > Gep::WFSClusterMaker::makeClusters ( const pGepCellMap &  caloCellsMap ) const

overridevirtual

Implements Gep::IClusterMaker.

Definition at line 8 of file WFSClusterMaker.cxx.

                                                                      {
 
  std::vector<Gep::Cluster> clusters;
 
  // Loop over all cells
  for (auto const& cell_itr : *caloCellsMap) {
 
    // Select only seed cells
    if (!isSeedCell(cell_itr.second)) continue;
 
    // Clustering
        std::vector<Gep::CustomCaloCell> cluster_cells = clusterFromCells(cell_itr.second, caloCellsMap);
    
        Gep::Cluster cluster = getClusterFromListOfCells(cluster_cells);
        clusters.push_back(cluster);
 
  }
 
  // Order topo clusters according to their et
  orderClustersInEt(clusters);
 
  return clusters;
}

orderClustersInEt()

void Gep::WFSClusterMaker::orderClustersInEt ( std::vector< Gep::Cluster > &  v_clusters ) const

private

Definition at line 165 of file WFSClusterMaker.cxx.

                                                                                  {
 
  std::vector<Gep::Cluster> v_ordered;
  for (unsigned int i_cluster = 0; i_cluster < v_clusters.size(); ++i_cluster) {
        float et = v_clusters[i_cluster].et();
 
        // Fill first cluster
        if (v_ordered.empty()) {
                v_ordered.push_back(v_clusters[i_cluster]);
                continue;
        }
 
        // Find correct position for filling
        for (unsigned int i = 0; i < v_ordered.size(); ++i) {
                if (v_ordered[i].et() < et) {
                        v_ordered.insert(v_ordered.begin()+i, v_clusters[i_cluster]);
                        break;
                }
        }
 
        // If cluster has smallest et so far, it wasn't filled at all so we need to take care of it
        if (v_ordered.size() != i_cluster+1) v_ordered.push_back(v_clusters[i_cluster]);
  }
 
  v_clusters = v_ordered;
 
  return;
 
}

Member Data Documentation

m_allowed_clustering_samplings

std::vector<int> Gep::WFSClusterMaker::m_allowed_clustering_samplings = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}

private

Definition at line 32 of file WFSClusterMaker.h.

m_allowed_seed_samplings

std::vector<int> Gep::WFSClusterMaker::m_allowed_seed_samplings = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}

private

Definition at line 31 of file WFSClusterMaker.h.

m_clustering_threshold

float Gep::WFSClusterMaker::m_clustering_threshold = 2.0

private

Definition at line 29 of file WFSClusterMaker.h.

m_max_shells

int Gep::WFSClusterMaker::m_max_shells = 8

private

Definition at line 30 of file WFSClusterMaker.h.

m_seed_threshold

float Gep::WFSClusterMaker::m_seed_threshold = 4.0

private

Definition at line 28 of file WFSClusterMaker.h.

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

• WFSClusterMaker.h
• WFSClusterMaker.cxx