DDTrackerZPosAlgo.cc

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#include "DD4hep/DetFactoryHelper.h"
#include "DetectorDescription/DDCMS/interface/DDPlugins.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

using namespace std;
using namespace dd4hep;
using namespace cms;

static long algorithm(Detector& /* description */, cms::DDParsingContext& ctxt, xml_h e, SensitiveDetector& /* sens */) {
  cms::DDNamespace ns(ctxt, e, true);
  DDAlgoArguments args(ctxt, e);
  int startCopyNo = args.find("StartCopyNo") ? args.value<int>("StartCopyNo") : 1;
  int incrCopyNo = args.find("IncrCopyNo") ? args.value<int>("IncrCopyNo") : 1;
  Volume mother = ns.volume(args.parentName());
  Volume child = ns.volume(args.value<string>("ChildName"));
  vector<double> zvec = args.value<vector<double> >("ZPositions");   // Z positions
  vector<string> rotMat = args.value<vector<string> >("Rotations");  // Names of rotation matrices

  LogDebug("TrackerGeom") << "debug: Parent " << mother.name() << "\tChild " << child.name() << " NameSpace "
                          << ns.name() << "\tCopyNo (Start/Increment) " << startCopyNo << ", " << incrCopyNo
                          << "\tNumber " << zvec.size();
  for (int i = 0; i < (int)(zvec.size()); i++)
    LogDebug("TrackerGeom") << "\t[" << i << "]\tZ = " << zvec[i] << ", Rot.Matrix = " << rotMat[i];

  for (int i = 0, copy = startCopyNo; i < (int)(zvec.size()); i++, copy += incrCopyNo) {
    Position tran(0, 0, zvec[i]);
    Rotation3D rot;
    /* PlacedVolume pv = */ rotMat[i] != "NULL"
        ? mother.placeVolume(child, copy, Transform3D(ns.rotation(rotMat[i]), tran))
        : mother.placeVolume(child, copy, tran);
    LogDebug("TrackerGeom") << "test: " << child.name() << " number " << copy << " positioned in " << mother.name()
                            << " at " << tran << " with " << rot;
  }
  return 1;
}

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