/data/refman/pasoursint/CMSSW_5_2_7_hltpatch2/src/Geometry/TrackerCommonData/plugins/DDTrackerPhiAlgo.cc

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// File: DDTrackerPhiAlgo.cc
// Description: Position n copies at prescribed phi values

#include <cmath>
#include <algorithm>

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


DDTrackerPhiAlgo::DDTrackerPhiAlgo() : startcn(1), incrcn(1) {
  LogDebug("TrackerGeom") << "DDTrackerPhiAlgo info: Creating an instance";
}

DDTrackerPhiAlgo::~DDTrackerPhiAlgo() {}

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

  if ( nArgs.find("StartCopyNo") != nArgs.end() ) {
    startcn = size_t(nArgs["StartCopyNo"]);
  } else {
    startcn = 1;
  }
  if ( nArgs.find("IncrCopyNo") != nArgs.end() ) {
    incrcn = int(nArgs["IncrCopyNo"]);
  } else {
    incrcn = 1;
  }


  radius     = nArgs["Radius"];
  tilt       = nArgs["Tilt"];
  phi        = vArgs["Phi"];
  zpos       = vArgs["ZPos"];

  if ( nArgs.find("NumCopies") != nArgs.end() ) {
    numcopies = size_t(nArgs["NumCopies"]);
    if ( numcopies != phi.size() ) {
      edm::LogError("TrackerGeom") << "DDTrackerPhiAlgo error: Parameter "
                                   << "NumCopies does not agree with the size "
                                   << "of the Phi vector. It was adjusted to "
                                   << "be the size of the Phi vector and may "
                                   << "lead to crashes or errors.";
    } 
  } else {
    numcopies = phi.size();
  }
    
  LogDebug("TrackerGeom") << "DDTrackerPhiAlgo debug: Parameters for position"
                          << "ing:: " << " Radius " << radius << " Tilt " 
                          << tilt/CLHEP::deg << " Copies " << phi.size() 
                          << " at";
  for (int i=0; i<(int)(phi.size()); i++)
    LogDebug("TrackerGeom") << "\t[" << i << "] phi = " << phi[i]/CLHEP::deg 
                            << " z = " << zpos[i];

  idNameSpace = DDCurrentNamespace::ns();
  childName   = sArgs["ChildName"]; 
  DDName parentName = parent().name();
  LogDebug("TrackerGeom") <<  "DDTrackerPhiAlgo debug: Parent " << parentName
                          <<"\tChild " << childName << " NameSpace " 
                          << idNameSpace;
}

void DDTrackerPhiAlgo::execute(DDCompactView& cpv) {

  DDName mother = parent().name();
  DDName child(DDSplit(childName).first, DDSplit(childName).second);
  double theta  = 90.*CLHEP::deg;
  size_t i  = 0;
  int ci = startcn;
  for ( ; i < numcopies; ++i) {
    double phix = phi[i] + tilt;
    double phiy = phix + 90.*CLHEP::deg;
    double phideg = phi[i]/CLHEP::deg;

    std::string rotstr = DDSplit(childName).first + dbl_to_string(phideg);
    DDRotation rotation = DDRotation(DDName(rotstr, idNameSpace));
    if (!rotation) {
      LogDebug("TrackerGeom") << "DDTrackerPhiAlgo test: Creating a new "
                              << "rotation: " << rotstr << "\t" << "90., "
                              << phix/CLHEP::deg << ", 90.," 
                              << phiy/CLHEP::deg << ", 0, 0";
      rotation = DDrot(DDName(rotstr, idNameSpace), theta, phix, theta, phiy,
                       0., 0.);
    }
        
    double xpos = radius*cos(phi[i]);
    double ypos = radius*sin(phi[i]);
    DDTranslation tran(xpos, ypos, zpos[i]);
  
   cpv.position(child, mother, ci, tran, rotation);
    LogDebug("TrackerGeom") << "DDTrackerPhiAlgo test: " << child << " number "
                            << ci << " positioned in " << mother << " at "
                            << tran  << " with " << rotation;
    ci=ci+incrcn;
  }
}