FastTimeGeometry.cc

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#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "Geometry/HGCalGeometry/interface/FastTimeGeometry.h"
#include "Geometry/CaloGeometry/interface/CaloGenericDetId.h"
#include "Geometry/CaloGeometry/interface/CaloCellGeometry.h"
#include "Geometry/CaloGeometry/interface/TruncatedPyramid.h"
#include "FWCore/Utilities/interface/Exception.h"

#include <cmath>

#include <Math/Transform3D.h>
#include <Math/EulerAngles.h>

typedef CaloCellGeometry::Tr3D Tr3D;
typedef std::vector<float> ParmVec;

//#define EDM_ML_DEBUG

FastTimeGeometry::FastTimeGeometry(const FastTimeTopology& topology_)
    : m_topology(topology_),
      m_cellVec(topology_.totalGeomModules()),
      m_validGeomIds(topology_.totalGeomModules()),
      m_Type(topology_.detectorType()),
      m_subdet(topology_.subDetector()) {
  m_validIds.reserve(topology().totalModules());
#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("FastTimeGeom") << "Expected total # of Geometry Modules " << topology().totalGeomModules();
#endif
}

FastTimeGeometry::~FastTimeGeometry() {}

void FastTimeGeometry::fillNamedParams(DDFilteredView fv) {}

void FastTimeGeometry::initializeParms() {}

void FastTimeGeometry::localCorners(Pt3DVec& lc, const CCGFloat* pv, unsigned int i, Pt3D& ref) {
  FlatTrd::localCorners(lc, pv, ref);
}

void FastTimeGeometry::newCell(
    const GlobalPoint& f1, const GlobalPoint& f2, const GlobalPoint& f3, const CCGFloat* parm, const DetId& detId) {
  FastTimeTopology::DecodedDetId id = topology().decode(detId);
  DetId geomId = (DetId)(FastTimeDetId(detId).geometryCell());
  int nEtaZ = topology().dddConstants().numberEtaZ(m_Type);
  int nPhi = topology().dddConstants().numberPhi(m_Type);

  const uint32_t cellIndex(topology().detId2denseGeomId(detId));

  m_cellVec.at(cellIndex) = FlatTrd(cornersMgr(), f1, f2, f3, parm);
  m_validGeomIds.at(cellIndex) = geomId;

#ifdef EDM_ML_DEBUG
  unsigned int nOld = m_validIds.size();
#endif
  for (int etaZ = 1; etaZ <= nEtaZ; ++etaZ) {
    id.iEtaZ = etaZ;
    for (int phi = 1; phi <= nPhi; ++phi) {
      id.iPhi = phi;
      DetId idc = topology().encode(id);
      if (topology().valid(idc)) {
        m_validIds.emplace_back(idc);
      }
    }
  }

#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("FastTimeGeom") << "FastTimeGeometry::newCell-> [" << cellIndex << "] front:" << f1.x() << '/'
                                   << f1.y() << '/' << f1.z() << " back:" << f2.x() << '/' << f2.y() << '/' << f2.z()
                                   << " eta|phi " << m_cellVec[cellIndex].etaPos() << ":"
                                   << m_cellVec[cellIndex].phiPos() << " id:" << FastTimeDetId(detId)
                                   << " with valid DetId from " << nOld << " to " << m_validIds.size();
  edm::LogVerbatim("FastTimeGeom") << "Cell[" << cellIndex << "] " << std::hex << geomId.rawId() << ":"
                                   << m_validGeomIds[cellIndex].rawId() << std::dec;
#endif
}

std::shared_ptr<const CaloCellGeometry> FastTimeGeometry::getGeometry(const DetId& id) const {
  if (id == DetId())
    return nullptr;  // nothing to get
  DetId geoId = (DetId)(FastTimeDetId(id).geometryCell());
  const uint32_t cellIndex(topology().detId2denseGeomId(geoId));
  const GlobalPoint pos = (id != geoId) ? getPosition(id) : GlobalPoint();
  return cellGeomPtr(cellIndex, pos);
}

bool FastTimeGeometry::present(const DetId& id) const {
  if (id == DetId())
    return false;
  DetId geoId = (DetId)(FastTimeDetId(id).geometryCell());
  const uint32_t index(topology().detId2denseGeomId(geoId));
  return (nullptr != getGeometryRawPtr(index));
}

GlobalPoint FastTimeGeometry::getPosition(const DetId& id) const {
  FastTimeDetId id_ = FastTimeDetId(id);
  auto pos = topology().dddConstants().getPosition(m_Type, id_.ieta(), id_.iphi(), id_.zside());
  return GlobalPoint(0.1 * pos.x(), 0.1 * pos.y(), 0.1 * pos.z());
}

FastTimeGeometry::CornersVec FastTimeGeometry::getCorners(const DetId& id) const {
  FastTimeDetId id_ = FastTimeDetId(id);
  auto corners = topology().dddConstants().getCorners(m_Type, id_.ieta(), id_.iphi(), id_.zside());
  FastTimeGeometry::CornersVec out;
  for (const auto& corner : corners) {
    out.emplace_back(0.1 * corner.x(), 0.1 * corner.y(), 0.1 * corner.z());
  }
  return out;
}

DetId FastTimeGeometry::getClosestCell(const GlobalPoint& r) const {
  int zside = (r.z() > 0) ? 1 : -1;
  std::pair<int, int> etaZPhi;
  if (m_Type == 1) {
    double zz = (zside > 0) ? r.z() : -r.z();
    etaZPhi = topology().dddConstants().getZPhi(zz, r.phi());
  } else {
    double phi = (zside > 0) ? static_cast<double>(r.phi()) : atan2(r.y(), -r.x());
    // Cast needed to resolve compile-time ambiguity of ? operator between
    // convertible Phi class and atan2 template function.

    etaZPhi = topology().dddConstants().getEtaPhi(r.perp(), phi);
  }
  FastTimeDetId id = FastTimeDetId(m_Type, etaZPhi.first, etaZPhi.second, zside);
#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("FastTimeGeom") << "getClosestCell: for (" << r.x() << ", " << r.y() << ", " << r.z() << ")  Id "
                                   << id.type() << ":" << id.zside() << ":" << id.ieta() << ":" << id.iphi();
#endif

  return (topology().valid(id) ? DetId(id) : DetId());
}

FastTimeGeometry::DetIdSet FastTimeGeometry::getCells(const GlobalPoint& r, double dR) const {
  FastTimeGeometry::DetIdSet dss;
  return dss;
}

std::string FastTimeGeometry::cellElement() const {
  if (m_Type == 1)
    return "FastTimeBarrel";
  else if (m_Type == 2)
    return "FastTimeEndcap";
  else
    return "Unknown";
}

unsigned int FastTimeGeometry::indexFor(const DetId& id) const {
  unsigned int cellIndex = m_cellVec.size();
  if (id != DetId()) {
    DetId geoId = (DetId)(FastTimeDetId(id).geometryCell());
    cellIndex = topology().detId2denseGeomId(geoId);
#ifdef EDM_ML_DEBUG
    edm::LogVerbatim("FastTimeGeom") << "indexFor " << std::hex << id.rawId() << ":" << geoId.rawId() << std::dec
                                     << " index " << cellIndex;
#endif
  }
  return cellIndex;
}

unsigned int FastTimeGeometry::sizeForDenseIndex() const { return topology().totalGeomModules(); }

const CaloCellGeometry* FastTimeGeometry::getGeometryRawPtr(uint32_t index) const {
  // Modify the RawPtr class
  const CaloCellGeometry* cell(&m_cellVec[index]);
  return (m_cellVec.size() < index || nullptr == cell->param() ? nullptr : cell);
}

std::shared_ptr<const CaloCellGeometry> FastTimeGeometry::cellGeomPtr(uint32_t index) const {
  if ((index >= m_cellVec.size()) || (m_validGeomIds[index].rawId() == 0))
    return nullptr;
  static const auto do_not_delete = [](const void*) {};
  auto cell = std::shared_ptr<const CaloCellGeometry>(&m_cellVec[index], do_not_delete);
  if (nullptr == cell->param())
    return nullptr;
  return cell;
}

std::shared_ptr<const CaloCellGeometry> FastTimeGeometry::cellGeomPtr(uint32_t index, const GlobalPoint& pos) const {
  if ((index >= m_cellVec.size()) || (m_validGeomIds[index].rawId() == 0))
    return nullptr;
  if (pos == GlobalPoint())
    return cellGeomPtr(index);
  auto cell = std::make_shared<FlatTrd>(m_cellVec[index]);
  cell->setPosition(pos);
#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("FastTimeGeomX") << "cellGeomPtr " << pos << ":" << cell;
#endif
  if (nullptr == cell->param())
    return nullptr;
  return cell;
}

void FastTimeGeometry::addValidID(const DetId& id) {
  edm::LogError("FastTimeGeom") << "FastTimeGeometry::addValidID is not implemented";
}

// FIXME: Change sorting algorithm if needed
namespace {
  struct rawIdSort {
    bool operator()(const DetId& a, const DetId& b) { return (a.rawId() < b.rawId()); }
  };
}  // namespace

void FastTimeGeometry::sortDetIds(void) {
  m_validIds.shrink_to_fit();
  std::sort(m_validIds.begin(), m_validIds.end(), rawIdSort());
}

void FastTimeGeometry::getSummary(CaloSubdetectorGeometry::TrVec& trVector,
                                  CaloSubdetectorGeometry::IVec& iVector,
                                  CaloSubdetectorGeometry::DimVec& dimVector,
                                  CaloSubdetectorGeometry::IVec& dinsVector) const {
  unsigned int numberOfCells = topology().totalGeomModules();  // total Geom Modules both sides
  unsigned int numberOfShapes = FastTimeGeometry::k_NumberOfShapes;
  unsigned int numberOfParametersPerShape = FastTimeGeometry::k_NumberOfParametersPerShape;

  trVector.reserve(numberOfCells * numberOfTransformParms());
  iVector.reserve(numberOfCells);
  dimVector.reserve(numberOfShapes * numberOfParametersPerShape);
  dinsVector.reserve(numberOfCells);

  for (unsigned int k = 0; k < topology().totalGeomModules(); ++k) {
    ParmVec params(FastTimeGeometry::k_NumberOfParametersPerShape, 0);
    params[0] = topology().dddConstants().getZHalf(m_Type);
    params[1] = params[2] = 0;
    params[3] = params[7] = topology().dddConstants().getRin(m_Type);
    params[4] = params[8] = topology().dddConstants().getRout(m_Type);
    params[5] = params[9] = topology().dddConstants().getRout(m_Type);
    params[6] = params[10] = 0;
    params[11] = (k == 0) ? 1.0 : -1.0;
    dimVector.insert(dimVector.end(), params.begin(), params.end());
  }

  for (unsigned int i(0); i < numberOfCells; ++i) {
    DetId detId = m_validGeomIds[i];
    dinsVector.emplace_back(topology().detId2denseGeomId(detId));
    iVector.emplace_back(1);

    Tr3D tr;
    auto ptr(cellGeomPtr(i));
    if (nullptr != ptr) {
      ptr->getTransform(tr, (Pt3DVec*)nullptr);

      if (Tr3D() == tr) {  // there is no rotation
        const GlobalPoint& gp(ptr->getPosition());
        tr = HepGeom::Translate3D(gp.x(), gp.y(), gp.z());
      }

      const CLHEP::Hep3Vector tt(tr.getTranslation());
      trVector.emplace_back(tt.x());
      trVector.emplace_back(tt.y());
      trVector.emplace_back(tt.z());
      if (6 == numberOfTransformParms()) {
        const CLHEP::HepRotation rr(tr.getRotation());
        const ROOT::Math::Transform3D rtr(
            rr.xx(), rr.xy(), rr.xz(), tt.x(), rr.yx(), rr.yy(), rr.yz(), tt.y(), rr.zx(), rr.zy(), rr.zz(), tt.z());
        ROOT::Math::EulerAngles ea;
        rtr.GetRotation(ea);
        trVector.emplace_back(ea.Phi());
        trVector.emplace_back(ea.Theta());
        trVector.emplace_back(ea.Psi());
      }
    }
  }
}

#include "FWCore/Utilities/interface/typelookup.h"

TYPELOOKUP_DATA_REG(FastTimeGeometry);