SiLayerBuilder.cxx

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/*
  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
*/
 
#include "InDetTrackingGeometry/SiLayerBuilder.h"
// InDet include
#include "InDetReadoutGeometry/SiDetectorManager.h"
#include "InDetReadoutGeometry/SiDetectorElement.h"
#include "InDetReadoutGeometry/SiDetectorElementCollection.h"
// Trk inlcude
#include "TrkDetDescrUtils/BinnedArray.h"
#include "TrkGeometry/CylinderLayer.h"
#include "TrkGeometry/DiscLayer.h"
#include "TrkSurfaces/Surface.h"
// STL
#include <map>
 
// constructor
InDet::SiLayerBuilder::SiLayerBuilder(const std::string& t, const std::string& n, const IInterface* p) :
  base_class(t,n,p)
{
}
 
// Athena standard methods
// initialize
StatusCode InDet::SiLayerBuilder::initialize()
{
  ATH_CHECK(InDet::SiLayerBuilderImpl::initialize());
  return StatusCode::SUCCESS;
}
 
 
std::unique_ptr<const std::vector<Trk::CylinderLayer*> > InDet::SiLayerBuilder::cylindricalLayers() const
{
  const InDetDD::SiDetectorElementCollection* siDetElementCollectionPtr = m_siMgr->getDetectorElementCollection();
  return cylindricalLayersImpl(*siDetElementCollectionPtr);
}
 
 
std::unique_ptr<const std::vector<Trk::DiscLayer* > > InDet::SiLayerBuilder::discLayers() const
{
  // sanity check for ID Helper
  if (!m_pixIdHelper && !m_sctIdHelper){
    ATH_MSG_ERROR("Neither Pixel nor SCT Detector Manager or ID Helper could be retrieved - giving up.");
    return nullptr;
  }
 
  // check for DBMS
  int nDBMLayers = m_siMgr->numerology().numEndcapsDBM();
  if (!nDBMLayers) return ((m_pixelCase and m_useRingLayout) ? createRingLayers() : createDiscLayers());
 
  ATH_MSG_DEBUG( "Found " << m_siMgr->numerology().numEndcapsDBM() << " DBM layers active, building first ECs, then DBMS");
  std::unique_ptr<std::vector<Trk::DiscLayer*> > ecLayers = createDiscLayers();
  if (ecLayers) {
    ATH_MSG_VERBOSE( "Created " << ecLayers->size() << " endcap layers w/o  DBM.");
    ecLayers = createDiscLayers(std::move(ecLayers));
    ATH_MSG_VERBOSE( "Created " << ecLayers->size() << " endcap layers with DBM.");
  }
  return ecLayers;
 
}
 
 
std::unique_ptr<std::vector< Trk::DiscLayer*> >
InDet::SiLayerBuilder::createDiscLayers(std::unique_ptr<std::vector< Trk::DiscLayer*> > discLayers) const {
 
  // get general layout
  const InDetDD::SiDetectorElementCollection* siDetElementCollectionPtr = m_siMgr->getDetectorElementCollection();
  return createDiscLayersImpl(*siDetElementCollectionPtr, std::move(discLayers));
}
 
 
std::unique_ptr<std::vector< Trk::DiscLayer*> >
InDet::SiLayerBuilder::createRingLayers() const {
 
  // get general layout
  const InDetDD::SiDetectorElementCollection* siDetElementCollectionPtr = m_siMgr->getDetectorElementCollection();
  return createRingLayersImpl(*siDetElementCollectionPtr);
}