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//==========================================================================
// Based off DD4hep_SubDetectorAssembly
//
// This is a simple plugin to allow compositing different detectors
// into a single barrel or endcap for ACTS
// Note: positive/negative position strings differentiate between
// positive/negative endcaps
//--------------------------------------------------------------------------
#include "DD4hep/DetFactoryHelper.h"
#include "DD4hep/Printout.h"
#include "XML/Utilities.h"
#include "Acts/Plugins/DD4hep/ActsExtension.hpp"
using namespace dd4hep;
using namespace dd4hep::detail;
static Ref_t create_element(Detector& description, xml_h e, Ref_t)
{
xml_det_t x_det(e);
const std::string det_name = x_det.nameStr();
DetElement sdet(det_name, x_det.id());
Volume vol;
Position pos;
const bool usePos = x_det.hasChild(_U(position));
sdet.setType("compound");
xml::setDetectorTypeFlag(e, sdet);
const std::string actsType = getAttrOrDefault(x_det, _Unicode(actsType), "endcap");
printout(DEBUG, det_name, "+++ Creating composite tracking detector (type: " + actsType + ")");
assert(actsType == "barrel" || actsType == "endcap");
// ACTS extension
{
Acts::ActsExtension* detWorldExt = new Acts::ActsExtension();
detWorldExt->addType(actsType, "detector");
sdet.addExtension<Acts::ActsExtension>(detWorldExt);
}
if (usePos) {
pos = Position(x_det.position().x(), x_det.position().y(), x_det.position().z());
}
vol = Assembly(det_name);
vol.setAttributes(description, x_det.regionStr(), x_det.limitsStr(), x_det.visStr());
Volume mother = description.pickMotherVolume(sdet);
PlacedVolume pv;
if (usePos) {
pv = mother.placeVolume(vol, pos);
} else {
pv = mother.placeVolume(vol);
}
sdet.setPlacement(pv);
for (xml_coll_t c(x_det, _U(composite)); c; ++c) {
xml_dim_t component = c;
const std::string nam = component.nameStr();
description.declareParent(nam, sdet);
}
return sdet;
}
DECLARE_DETELEMENT(athena_CompositeTracker, create_element)