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#include "DataFormats/Math/interface/GeantUnits.h"
#include "DetectorDescription/Core/interface/DDSplit.h"
#include "DetectorDescription/DDCMS/interface/DDPlugins.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "DD4hep/DetFactoryHelper.h"
//#define EDM_ML_DEBUG
using namespace geant_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);
int units = args.value<int>("number");
double rr = args.value<double>("radius");
double dphi = args.value<double>("deltaPhi");
#ifdef EDM_ML_DEBUG
edm::LogVerbatim("ForwardGeom") << "DDBHMAngular debug: Parameters for positioning-- " << units
<< " copies at radius " << convertMmToCm(rr) << " cm with delta(phi) "
<< convertRadToDeg(dphi);
#endif
std::string rotMat = args.value<std::string>("Rotation");
std::string childName = args.value<std::string>("ChildName");
dd4hep::Volume parent = ns.volume(args.parentName());
dd4hep::Volume child = ns.volume(ns.prepend(childName));
#ifdef EDM_ML_DEBUG
edm::LogVerbatim("ForwardGeom") << "DDBHMAngular debug: Parent " << parent.name() << "\tChild " << child.name()
<< "\tRotation matrix " << rotMat;
#endif
std::string rotstr = DDSplit(rotMat).first;
dd4hep::Rotation3D rot;
if (rotstr != "NULL") {
rot = ns.rotation(rotMat);
}
static const int startpos = 16;
static const double fac1 = 0.5;
static const double fac2 = 1.5;
for (int jj = 0; jj < units; jj++) {
double driverX(0), driverY(0), driverZ(0);
if (jj < startpos) {
driverX = rr * cos((jj + fac1) * dphi);
driverY = sqrt(rr * rr - driverX * driverX);
} else if (jj == startpos) {
driverX = rr * cos((startpos - fac1) * dphi);
driverY = -sqrt(rr * rr - driverX * driverX);
} else if (jj == startpos + 1) {
driverX = rr * cos((startpos - fac2) * dphi);
driverY = -sqrt(rr * rr - driverX * driverX);
} else if (jj == startpos + 2) {
driverX = rr * cos(fac1 * dphi);
driverY = -sqrt(rr * rr - driverX * driverX);
} else if (jj == startpos + 3) {
driverX = rr * cos(fac2 * dphi);
driverY = -sqrt(rr * rr - driverX * driverX);
}
dd4hep::Position tran(driverX, driverY, driverZ);
parent.placeVolume(child, jj + 1, dd4hep::Transform3D(rot, tran));
#ifdef EDM_ML_DEBUG
edm::LogVerbatim("ForwardGeom") << "DDBHMAngular test: " << child.name() << " number " << jj + 1
<< " positioned in " << parent.name() << " at " << tran << " with " << rotMat
<< " : " << rot;
#endif
}
return 1;
}
// first argument is the type from the xml file
DECLARE_DDCMS_DETELEMENT(DDCMS_bhmalgo_DDBHMAngular, algorithm)
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