EcalTriggerGeometry.cxx

#include "Ecal/EcalTriggerGeometry.h"
 
#include <sstream>
 
#include "DetDescr/EcalGeometry.h"
#include "Framework/ConditionsObjectProvider.h"
#include "Framework/EventHeader.h"
 
namespace ecal {
static const int LAYERS_IDENTICAL = 0x01;
static const int MODULES_MASK = 0xFF00;
static const int INPLANE_IDENTICAL = 0x0100;
 
EcalTriggerGeometry::EcalTriggerGeometry(int symmetry,
                                         const ldmx::EcalGeometry* ecalGeom)
    : ConditionsObject(CONDITIONS_OBJECT_NAME),
      symmetry_{symmetry},
      ecal_geometry_{ecalGeom} {
  if ((symmetry_ & MODULES_MASK) == INPLANE_IDENTICAL) {
    // first set is the same regardless of alignment...
    int tcell = 0;
    for (int v = 1; v <= 10; v += 3) {
      for (int u = 1; u <= 10; u += 3) {
        ldmx::EcalTriggerID tid(0, 0, tcell);
        std::vector<ldmx::EcalID> pids;
        for (int du = -1; du <= 1; du++) {
          for (int dv = -1; dv <= 1; dv++) {
            ldmx::EcalID pid(0, 0, u + du, v + dv);
            precision2trigger_[pid] = tid;
            pids.push_back(pid);
          }
        }
        trigger2precision_[tid] = pids;
        tcell++;
      }
    }
    for (int v = 13; v <= 22; v += 3) {
      for (int u = v - 10; u <= v; u += 3) {
        ldmx::EcalTriggerID tid(0, 0, tcell);
        std::vector<ldmx::EcalID> pids;
        for (int dv = -1; dv <= 1; dv++) {
          for (int du = -1; du <= 1; du++) {
            // changes directions here
            ldmx::EcalID pid(0, 0, u + du + dv, v + dv);
            precision2trigger_[pid] = tid;
            pids.push_back(pid);
          }
        }
        trigger2precision_[tid] = pids;
        tcell++;
      }
    }
    // right side
    for (int v = 2; v <= 22; v += 3) {
      int irow = (v - 2) / 3;
      for (int icol = 0; icol <= std::min(irow, 3); icol++) {
        if (irow - icol >= 4) continue;
        ldmx::EcalTriggerID tid(0, 0, tcell);
        std::vector<ldmx::EcalID> pids;
        int u = 13 + 3 * icol;
        for (int dv = -1; dv <= 1; dv++) {
          for (int du = -1; du <= 1; du++) {
            ldmx::EcalID pid(0, 0, u + du, v + du + dv);
            precision2trigger_[pid] = tid;
            pids.push_back(pid);
          }
        }
        trigger2precision_[tid] = pids;
        tcell++;
      }
    }
 
  } else {
    // raise an exception...
  }
}
 
std::vector<ldmx::EcalID> EcalTriggerGeometry::contentsOfTriggerCell(
    ldmx::EcalTriggerID triggerCell) const {
  ldmx::EcalTriggerID eff_id;
  std::vector<ldmx::EcalID> retval;
  if ((symmetry_ & MODULES_MASK) == INPLANE_IDENTICAL) {
    eff_id = ldmx::EcalTriggerID(0, 0, triggerCell.triggercell());
  }
  auto ptr = trigger2precision_.find(eff_id);
  if (ptr != trigger2precision_.end()) {
    for (auto idz : ptr->second) {
      retval.push_back(
          ldmx::EcalID(triggerCell.layer(), triggerCell.module(), idz.cell()));
    }
  }
  return retval;
}
 
ldmx::EcalID EcalTriggerGeometry::centerInTriggerCell(
    ldmx::EcalTriggerID triggerCell) const {
  ldmx::EcalTriggerID eff_id;
  if ((symmetry_ & MODULES_MASK) == INPLANE_IDENTICAL) {
    eff_id = ldmx::EcalTriggerID(0, 0, triggerCell.triggercell());
  }
  auto ptr = trigger2precision_.find(eff_id);
  if (ptr == trigger2precision_.end()) {
    std::stringstream ss;
    ss << "Unable to find trigger cell " << triggerCell;
    EXCEPTION_RAISE("EcalGeometryException", ss.str());
  }
 
  return ldmx::EcalID(triggerCell.layer(), triggerCell.module(),
                      ptr->second[4].cell());
}
 
ldmx::EcalTriggerID EcalTriggerGeometry::belongsTo(
    ldmx::EcalID precisionCell) const {
  ldmx::EcalID eff_id;
  if ((symmetry_ & MODULES_MASK) == INPLANE_IDENTICAL) {
    eff_id = ldmx::EcalID(0, 0, precisionCell.cell());
  }
  auto ptr = precision2trigger_.find(eff_id);
  if (ptr == precision2trigger_.end()) {
    return ldmx::EcalTriggerID(0, 0, 0);  // not ideal
  } else {
    return ldmx::EcalTriggerID(precisionCell.layer(), precisionCell.module(),
                               ptr->second.triggercell());
  }
}
 
// as it happens, the fifth precision cell in the list is the center cell
std::tuple<double, double, double> EcalTriggerGeometry::globalPosition(
    ldmx::EcalTriggerID triggerCell) const {
  if (!ecal_geometry_) return std::make_tuple(0, 0, 0);
  ldmx::EcalID pid = centerInTriggerCell(triggerCell);
  return ecal_geometry_->getPosition(pid);
}
 
std::pair<double, double> EcalTriggerGeometry::localPosition(
    ldmx::EcalTriggerID triggerCell) const {
  if (!ecal_geometry_) return std::make_pair(0, 0);
  ldmx::EcalID pid = centerInTriggerCell(triggerCell);
  return ecal_geometry_->getPositionInModule(pid.cell());
}
 
class EcalTriggerGeometryProvider : public framework::ConditionsObjectProvider {
 public:
  EcalTriggerGeometryProvider(const std::string& name,
                              const std::string& tagname,
                              const framework::config::Parameters& parameters,
                              framework::Process& process)
      : ConditionsObjectProvider(EcalTriggerGeometry::CONDITIONS_OBJECT_NAME,
                                 tagname, parameters, process),
        ecal_trigger_geometry_{nullptr} {}
 
  virtual ~EcalTriggerGeometryProvider() {
    if (ecal_trigger_geometry_ != nullptr) delete ecal_trigger_geometry_;
    ecal_trigger_geometry_ = nullptr;
  }
 
  virtual std::pair<const framework::ConditionsObject*,
                    framework::ConditionsIOV>
  getCondition(const ldmx::EventHeader& context) {
    if (ecal_trigger_geometry_ == nullptr) {
      std::pair<const framework::ConditionsObject*, framework::ConditionsIOV>
          cond_ecal_geom = requestParentCondition(
              ldmx::EcalGeometry::CONDITIONS_OBJECT_NAME, context);
      const ldmx::EcalGeometry* ecalgeom =
          dynamic_cast<const ldmx::EcalGeometry*>(cond_ecal_geom.first);
      ecal_trigger_geometry_ = new EcalTriggerGeometry(
          INPLANE_IDENTICAL | LAYERS_IDENTICAL, ecalgeom);
    }
    return std::make_pair(ecal_trigger_geometry_,
                          framework::ConditionsIOV(
                              context.getRun(), context.getRun(), true, true));
  }
 
  virtual void releaseConditionsObject(const framework::ConditionsObject* co) {}
 
 private:
  EcalTriggerGeometry* ecal_trigger_geometry_;
};
 
}  // namespace ecal
DECLARE_CONDITIONS_PROVIDER(ecal::EcalTriggerGeometryProvider);