EcalTBHodoscopeGeometryLoaderFromDDD.cc

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#include "Geometry/EcalTestBeam/plugins/EcalTBHodoscopeGeometryLoaderFromDDD.h"

#include "Geometry/EcalTestBeam/interface/EcalTBHodoscopeGeometry.h"
#include "DataFormats/EcalDetId/interface/EBDetId.h"

#include "DetectorDescription/Core/interface/DDFilteredView.h"
#include "DetectorDescription/Core/interface/DDFilter.h"
#include "DetectorDescription/Core/interface/DDLogicalPart.h"
#include "DetectorDescription/Core/interface/DDSolid.h"
#include "DetectorDescription/Core/interface/DDTransform.h"
#include "DetectorDescription/Core/interface/DDExpandedView.h"
#include "DetectorDescription/Core/interface/DDName.h"

typedef CaloCellGeometry::CCGFloat CCGFloat;

#include <iostream>
#include <utility>
#include <vector>
#include <memory>

std::unique_ptr<CaloSubdetectorGeometry> EcalTBHodoscopeGeometryLoaderFromDDD::load(const DDCompactView* cpv) {
  std::cout << "[EcalTBHodoscopeGeometryLoaderFromDDD]:: start the construction of EcalTBHodoscope" << std::endl;

  std::unique_ptr<CaloSubdetectorGeometry> ebg(new EcalTBHodoscopeGeometry());

  makeGeometry(cpv, ebg.get());

  std::cout << "[EcalTBHodoscopeGeometryLoaderFromDDD]:: Returning EcalTBHodoscopeGeometry" << std::endl;

  return ebg;
}

void EcalTBHodoscopeGeometryLoaderFromDDD::makeGeometry(const DDCompactView* cpv, CaloSubdetectorGeometry* ebg) {
  if (ebg->cornersMgr() == nullptr)
    ebg->allocateCorners(EBDetId::kSizeForDenseIndexing);
  if (ebg->parMgr() == nullptr)
    ebg->allocatePar(10, 3);

  std::unique_ptr<DDFilter> filter{getDDFilter()};

  DDFilteredView fv(*cpv, *filter);

  bool doSubDets;
  for (doSubDets = fv.firstChild(); doSubDets; doSubDets = fv.nextSibling()) {
#if 0
      std::string answer = getDDDString("ReadOutName",&fv);
      if (answer != "EcalTBH4BeamHits")
        continue;
#endif

    const DDSolid& solid = fv.logicalPart().solid();

    if (solid.shape() != DDSolidShape::ddbox) {
      throw cms::Exception("DDException")
          << std::string(__FILE__)
          << "\n CaloGeometryEcalTBHodoscope::upDate(...): currently only box fiber shapes supported ";
      edm::LogWarning("EcalTBHodoscopeGeometry") << "Wrong shape for sensitive volume!" << solid;
    }

    std::vector<double> pv = solid.parameters();

    // use preshower strip as box in space representation

    // rotate the box and then move it
    DD3Vector x, y, z;
    fv.rotation().GetComponents(x, y, z);
    CLHEP::Hep3Vector hx(x.X(), x.Y(), x.Z());
    CLHEP::Hep3Vector hy(y.X(), y.Y(), y.Z());
    CLHEP::Hep3Vector hz(z.X(), z.Y(), z.Z());
    CLHEP::HepRotation hrot(hx, hy, hz);
    CLHEP::Hep3Vector htran(fv.translation().X(), fv.translation().Y(), fv.translation().Z());

    const HepGeom::Transform3D ht3d(hrot,  // only scale translation
                                    CaloCellGeometry::k_ScaleFromDDDtoGeant * htran);

    const HepGeom::Point3D<float> ctr(ht3d * HepGeom::Point3D<float>(0, 0, 0));

    const GlobalPoint refPoint(ctr.x(), ctr.y(), ctr.z());

    std::vector<CCGFloat> vv;
    vv.reserve(pv.size() + 1);
    for (unsigned int i(0); i != pv.size(); ++i) {
      vv.emplace_back(CaloCellGeometry::k_ScaleFromDDDtoGeant * pv[i]);
    }
    vv.emplace_back(0.);  // tilt=0 here
    const CCGFloat* pP(CaloCellGeometry::getParmPtr(vv, ebg->parMgr(), ebg->parVecVec()));

    const DetId detId(getDetIdForDDDNode(fv));

    //Adding cell to the Geometry

    ebg->newCell(refPoint, refPoint, refPoint, pP, detId);
  }  // loop over all children
}

unsigned int EcalTBHodoscopeGeometryLoaderFromDDD::getDetIdForDDDNode(const DDFilteredView& fv) {
  // perform some consistency checks
  // get the parents and grandparents of this node
  DDGeoHistory parents = fv.geoHistory();

  assert(parents.size() >= 3);

  EcalBaseNumber baseNumber;
  //baseNumber.setSize(parents.size());

  for (unsigned int i = 1; i <= parents.size(); i++) {
    baseNumber.addLevel(parents[parents.size() - i].logicalPart().name().name(), parents[parents.size() - i].copyno());
  }

  return _scheme.getUnitID(baseNumber);
}

DDFilter* EcalTBHodoscopeGeometryLoaderFromDDD::getDDFilter() {
  return new DDAndFilter<DDSpecificsMatchesValueFilter, DDSpecificsMatchesValueFilter>(
      DDSpecificsMatchesValueFilter{DDValue("SensitiveDetector", "EcalTBH4BeamDetector", 0)},
      DDSpecificsMatchesValueFilter{DDValue("ReadOutName", "EcalTBH4BeamHits", 0)});
}