ddcms_det_element_DDCMS_hcal_DDHCalForwardAlgo

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#include "DataFormats/Math/interface/angle_units.h"
#include "DetectorDescription/Core/interface/DDSplit.h"
#include "DetectorDescription/DDCMS/interface/DDPlugins.h"
#include "DetectorDescription/DDCMS/interface/DDutils.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "DD4hep/DetFactoryHelper.h"

//#define EDM_ML_DEBUG
using namespace angle_units::operators;

static long algorithm(dd4hep::Detector& /* description */, cms::DDParsingContext& ctxt, xml_h e) {
  cms::DDNamespace ns(ctxt, e, true);
  cms::DDAlgoArguments args(ctxt, e);
  // Header section
  std::string parentName = DDSplit(args.parentName()).first;
  std::string cellMat = args.value<std::string>("CellMaterial");                        //Cell material
  double cellDx = args.value<double>("CellDx");                                         //Cell size (x)
  double cellDy = args.value<double>("CellDy");                                         //Cell size (y)
  double cellDz = args.value<double>("CellDz");                                         //Cell size (z)
  double startY = args.value<double>("StartY");                                         //Starting Y for Cell
  std::vector<std::string> childName = args.value<std::vector<std::string> >("Child");  //Children name
  std::vector<int> number = args.value<std::vector<int> >("Number");                    //Number of cells
  std::vector<int> size = args.value<std::vector<int> >("Size");                        //Number of children
  std::vector<int> type = args.value<std::vector<int> >("Type");                        //First child
#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("HCalGeom") << "DDHCalForwardAlgo: Cell material " << cellMat << "\tCell Size "
                               << cms::convert2mm(cellDx) << ", " << cms::convert2mm(cellDy) << ", "
                               << cms::convert2mm(cellDz) << "\tStarting Y " << cms::convert2mm(startY) << "\tChildren "
                               << childName[0] << ", " << childName[1]
                               << "\n                         Cell positioning done for " << number.size() << " times";
  for (unsigned int i = 0; i < number.size(); ++i)
    edm::LogVerbatim("HCalGeom") << "\t" << i << " Number of children " << size[i] << " occurence " << number[i]
                                 << " first child index " << type[i];
  edm::LogVerbatim("HCalGeom") << "DDHCalForwardAlgo debug: Parent " << args.parentName() << " NameSpace " << ns.name();
#endif

  dd4hep::Volume parent = ns.volume(args.parentName());
  dd4hep::Material matter = ns.material(cellMat);

  double ypos = startY;
  int box = 0;
  for (unsigned int i = 0; i < number.size(); i++) {
    double dx = cellDx * size[i];
    int indx = type[i];
    for (int j = 0; j < number[i]; j++) {
      box++;
      std::string name = parentName + std::to_string(box);
      dd4hep::Solid solid = dd4hep::Box(ns.prepend(name), dx, cellDy, cellDz);
#ifdef EDM_ML_DEBUG
      edm::LogVerbatim("HCalGeom") << "DDHCalForwardAlgo: " << solid.name() << " Box made of " << cellMat << " of Size "
                                   << cms::convert2mm(dx) << ", " << cms::convert2mm(cellDy) << ", "
                                   << cms::convert2mm(cellDz);
#endif
      dd4hep::Volume glog(solid.name(), solid, matter);

      parent.placeVolume(glog, box, dd4hep::Position(0.0, ypos, 0.0));
#ifdef EDM_ML_DEBUG
      edm::LogVerbatim("HCalGeom") << "DDHCalForwardAlgo: " << solid.name() << " number " << box << " positioned in "
                                   << parent.name() << " at (0.0, " << cms::convert2mm(ypos)
                                   << ", 0.0) with no rotation";
#endif

      double xpos = -dx + cellDx;
      ypos += 2 * cellDy;
      indx = 1 - indx;
      for (int k = 0; k < size[i]; ++k) {
        glog.placeVolume(ns.volume(childName[indx]), k + 1, dd4hep::Position(xpos, 0.0, 0.0));
#ifdef EDM_ML_DEBUG
        edm::LogVerbatim("HCalGeom") << "DDHCalForwardAlgo: " << childName[indx] << " number " << (k + 1)
                                     << " positioned in " << glog.name() << " at (" << cms::convert2mm(xpos)
                                     << ", 0,0, 0.0) with no rotation";
#endif
        xpos += 2 * cellDx;
      }
    }
  }
#ifdef EDM_ML_DEBUG
  edm::LogVerbatim("HCalGeom") << "<<== End of DDHCalForwardAlgo construction";
#endif
  return cms::s_executed;
}

// first argument is the type from the xml file
DECLARE_DDCMS_DETELEMENT(DDCMS_hcal_DDHCalForwardAlgo, algorithm);