/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_5_3_13_patch3/src/Geometry/TrackerCommonData/plugins/DDTrackerLinearXY.cc

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// File: DDTrackerLinearXY.cc
// Description: Position nxXny copies at given intervals along x and y axis

#include <cmath>
#include <algorithm>

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "DetectorDescription/Core/interface/DDCurrentNamespace.h"
#include "DetectorDescription/Core/interface/DDSplit.h"
#include "Geometry/TrackerCommonData/plugins/DDTrackerLinearXY.h"
#include "CLHEP/Units/GlobalPhysicalConstants.h"
#include "CLHEP/Units/GlobalSystemOfUnits.h"


DDTrackerLinearXY::DDTrackerLinearXY() {
  LogDebug("TrackerGeom") <<"DDTrackerLinearXY info: Creating an instance";
}

DDTrackerLinearXY::~DDTrackerLinearXY() {}

void DDTrackerLinearXY::initialize(const DDNumericArguments & nArgs,
                                   const DDVectorArguments & vArgs,
                                   const DDMapArguments & ,
                                   const DDStringArguments & sArgs,
                                   const DDStringVectorArguments &) {

  numberX   = int(nArgs["NumberX"]);
  deltaX    = nArgs["DeltaX"];
  numberY   = int(nArgs["NumberY"]);
  deltaY    = nArgs["DeltaY"];
  centre    = vArgs["Center"];
  
  idNameSpace = DDCurrentNamespace::ns();
  childName   = sArgs["ChildName"]; 
  DDName parentName = parent().name();
  LogDebug("TrackerGeom") << "DDTrackerLinearXY debug: Parent " << parentName
                          << "\tChild " << childName << " NameSpace " 
                          << idNameSpace << "\tNumber along X/Y " << numberX
                          << "/" << numberY << "\tDelta along X/Y " << deltaX
                          << "/" << deltaY << "\tCentre " << centre[0] << ", " 
                          << centre[1] << ", "  << centre[2];
}

void DDTrackerLinearXY::execute(DDCompactView& cpv) {

  DDName mother = parent().name();
  DDName child(DDSplit(childName).first, DDSplit(childName).second);
  DDRotation rot;
  double xoff = centre[0] - (numberX-1)*deltaX/2.;
  double yoff = centre[1] - (numberY-1)*deltaY/2.;
  int    copy = 0;

  for (int i=0; i<numberX; i++) {
    for (int j=0; j<numberY; j++) {
        
      DDTranslation tran(xoff+i*deltaX,yoff+j*deltaY,centre[2]);
      copy++;
     cpv.position(child, mother, copy, tran, rot);
      LogDebug("TrackerGeom") << "DDTrackerLinearXY test: " << child 
                              << " number " << copy << " positioned in "
                              << mother << " at " << tran << " with " << rot;
    }
  }
}