SinglePadClusterTool.cxx

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#include "SinglePadClusterTool.h"
 
#include "HGTD_ReadoutGeometry/HGTD_ModuleDesign.h"
 
namespace HGTD {
 
SinglePadClusterTool::SinglePadClusterTool(const std::string& type,
                                           const std::string& name,
                                           const IInterface* parent)
    : base_class(type, name, parent) {}
 
StatusCode SinglePadClusterTool::initialize() {
 
  ATH_CHECK(AlgTool::initialize());
 
  ATH_CHECK(m_cluster_maker.retrieve());
 
  ATH_CHECK(detStore()->retrieve(m_hgtd_det_mgr, "HGTD"));
 
  return StatusCode::SUCCESS;
}
 
std::unique_ptr<HGTD_ClusterCollection>
SinglePadClusterTool::clusterize(const HGTD_RDO_Collection& rdo_coll,
                                 DataPool<HGTD_Cluster>* dataItemsPool) const {
 
  Identifier identifier = rdo_coll.identify();
  IdentifierHash id_hash = rdo_coll.identifierHash();
 
  std::unique_ptr<HGTD_ClusterCollection> cluster_collection =
      std::make_unique<HGTD_ClusterCollection>(id_hash);
 
  if(dataItemsPool){
      cluster_collection->clear(SG::VIEW_ELEMENTS);
  }
 
  cluster_collection->setIdentifier(identifier);
  cluster_collection->reserve(rdo_coll.size());
 
  const InDetDD::HGTD_DetectorElement* element =
      m_hgtd_det_mgr->getDetectorElement(identifier);
 
  for (const auto *const rdo : rdo_coll) {
 
    Identifier rdo_id = rdo->identify();
    ATH_MSG_DEBUG("Using RDO: " << rdo_id);
 
    // get the local position from the detector design
    InDetDD::SiCellId si_cell_id = element->cellIdFromIdentifier(rdo_id);
    const InDetDD::HGTD_ModuleDesign& det_design = element->design();
    InDetDD::SiLocalPosition si_pos =
        det_design.localPositionOfCell(si_cell_id);
    Amg::Vector2D loc_pos(si_pos.xPhi(), si_pos.xEta());
    ATH_MSG_DEBUG("Local position: x=" << loc_pos.x() << " y=" << loc_pos.y());
 
    // a cluster consists only of the pad itself
    std::vector<Identifier> rdo_list = {rdo_id};
 
    // From SiWidth header:
    // Constructor with parameters: <col, row> in units of RDOs (so should be
    // int),
    //                              <phiR width in mm, Z width in mm>
    // NOTE: without a clustering of the pads, the width of each "cluster" is 1
    // in col and row direction
    int col_width = 1;
    int row_width = 1;
    //FIXME there is a bug in the detector design! should not be hardcoded here
    // double eta_width = det_design.etaPitch();
    // double phi_width = det_design.phiPitch();
    double eta_width = 1.3;
    double phi_width = 1.3;
    ATH_MSG_DEBUG("eta_width=" << eta_width << " phi_width=" << phi_width);
 
    InDet::SiWidth si_width(Amg::Vector2D(col_width, row_width),
                            Amg::Vector2D(phi_width, eta_width));
 
    // retrieve the time of arrival
    float time_of_arrival = rdo->getTOA();
 
    // this would hold the vector of all cluster components. Only size 1 if RDO
    // gets transformed to cluster directly
    std::vector<int> time_over_threshold = {static_cast<int>(rdo->getTOT())};
 
    HGTD_Cluster* cluster = nullptr;
    if (dataItemsPool) {
      // data Item pool owns the element. The collection
      // is view. Just move assign to it.
      cluster = dataItemsPool->nextElementPtr();
   } else {
      // collection will own the element release
      cluster = new HGTD_Cluster();
    }
    (*cluster) = m_cluster_maker->createCluster(
        rdo_id,
        loc_pos,
        std::move(rdo_list),
        si_width,
        element,
        time_of_arrival,
        std::move(time_over_threshold));
 
   cluster->setHashAndIndex(cluster_collection->identifyHash(),
                             cluster_collection->size());
 
    cluster_collection->push_back(cluster);
  }
  return cluster_collection;
}
 
} // namespace HGTD