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File indexing completed on 2021-06-21 23:58:55

0001 ///////////////////////////////////////////////////////////////////////////////
0002 // File: DDHCalTestBeamAlgo.cc
0003 // Description: Position inside the mother according to (eta,phi)
0004 ///////////////////////////////////////////////////////////////////////////////
0005 
0006 #include <cmath>
0007 #include <algorithm>
0008 #include <map>
0009 #include <string>
0010 #include <vector>
0011 
0012 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0013 #include "FWCore/PluginManager/interface/PluginFactory.h"
0014 #include "DataFormats/Math/interface/angle_units.h"
0015 #include "DetectorDescription/Core/interface/DDTypes.h"
0016 #include "DetectorDescription/Core/interface/DDAlgorithm.h"
0017 #include "DetectorDescription/Core/interface/DDLogicalPart.h"
0018 #include "DetectorDescription/Core/interface/DDCurrentNamespace.h"
0019 #include "DetectorDescription/Core/interface/DDAlgorithmFactory.h"
0020 
0021 using namespace angle_units::operators;
0022 
0023 class DDHCalTestBeamAlgo : public DDAlgorithm {
0024 public:
0025   //Constructor and Destructor
0026   DDHCalTestBeamAlgo();
0027   ~DDHCalTestBeamAlgo() override;
0028 
0029   void initialize(const DDNumericArguments& nArgs,
0030                   const DDVectorArguments& vArgs,
0031                   const DDMapArguments& mArgs,
0032                   const DDStringArguments& sArgs,
0033                   const DDStringVectorArguments& vsArgs) override;
0034 
0035   void execute(DDCompactView& cpv) override;
0036 
0037 private:
0038   double eta;        //Eta at which beam is focussed
0039   double phi;        //Phi    ................
0040   double theta;      //Corresponding theta value
0041   double distance;   //Distance of the centre of rotation
0042   double distanceZ;  //Distance along x-axis of the centre of rotation
0043   double dist;       //Overall distance
0044   double dz;         //Half length along z of the volume to be placed
0045   int copyNumber;    //Copy Number
0046 
0047   std::string idNameSpace;  //Namespace of this and ALL sub-parts
0048   std::string childName;    //Children name
0049 };
0050 
0051 DDHCalTestBeamAlgo::DDHCalTestBeamAlgo() {
0052 #ifdef EDM_ML_DEBUG
0053   edm::LogVerbatim("HCalGeom") << "DDHCalTestBeamAlgo: Creating an instance";
0054 #endif
0055 }
0056 
0057 DDHCalTestBeamAlgo::~DDHCalTestBeamAlgo() {}
0058 
0059 void DDHCalTestBeamAlgo::initialize(const DDNumericArguments& nArgs,
0060                                     const DDVectorArguments&,
0061                                     const DDMapArguments&,
0062                                     const DDStringArguments& sArgs,
0063                                     const DDStringVectorArguments&) {
0064   eta = nArgs["Eta"];
0065   theta = 2.0 * atan(exp(-eta));
0066   phi = nArgs["Phi"];
0067   distance = nArgs["Dist"];
0068   distanceZ = nArgs["DistZ"];
0069   dz = nArgs["Dz"];
0070   copyNumber = int(nArgs["Number"]);
0071   dist = (distance + distanceZ / sin(theta));
0072 #ifdef EDM_ML_DEBUG
0073   edm::LogVerbatim("HCalGeom") << "DDHCalTestBeamAlgo: Parameters for position"
0074                                << "ing--"
0075                                << " Eta " << eta << "\tPhi " << convertRadToDeg(phi) << "\tTheta "
0076                                << convertRadToDeg(theta) << "\tDistance " << distance << "/" << distanceZ << "/" << dist
0077                                << "\tDz " << dz << "\tcopyNumber " << copyNumber;
0078 #endif
0079   idNameSpace = DDCurrentNamespace::ns();
0080   childName = sArgs["ChildName"];
0081 #ifdef EDM_ML_DEBUG
0082   edm::LogVerbatim("HCalGeom") << "DDHCalTestBeamAlgo:Parent " << parent().name() << "\tChild " << childName
0083                                << " NameSpace " << idNameSpace;
0084 #endif
0085 }
0086 
0087 void DDHCalTestBeamAlgo::execute(DDCompactView& cpv) {
0088   double thetax = 90._deg + theta;
0089   double sthx = sin(thetax);
0090   if (std::abs(sthx) > 1.e-12)
0091     sthx = 1. / sthx;
0092   else
0093     sthx = 1.;
0094   double phix = atan2(sthx * cos(theta) * sin(phi), sthx * cos(theta) * cos(phi));
0095   double thetay = 90._deg;
0096   double phiy = 90._deg + phi;
0097   double thetaz = theta;
0098   double phiz = phi;
0099 
0100   DDRotation rotation;
0101   std::string rotstr = childName;
0102 #ifdef EDM_ML_DEBUG
0103   edm::LogVerbatim("HCalGeom") << "DDHCalTestBeamAlgo: Creating a rotation " << rotstr << "\t"
0104                                << convertRadToDeg(thetax) << "," << convertRadToDeg(phix) << ","
0105                                << convertRadToDeg(thetay) << "," << convertRadToDeg(phiy) << ","
0106                                << convertRadToDeg(thetaz) << "," << convertRadToDeg(phiz);
0107 #endif
0108   rotation = DDrot(DDName(rotstr, idNameSpace), thetax, phix, thetay, phiy, thetaz, phiz);
0109 
0110   double r = dist * sin(theta);
0111   double xpos = r * cos(phi);
0112   double ypos = r * sin(phi);
0113   double zpos = dist * cos(theta);
0114   DDTranslation tran(xpos, ypos, zpos);
0115 
0116   DDName parentName = parent().name();
0117   cpv.position(DDName(childName, idNameSpace), parentName, copyNumber, tran, rotation);
0118 #ifdef EDM_ML_DEBUG
0119   edm::LogVerbatim("HCalGeom") << "DDHCalTestBeamAlgo: " << DDName(childName, idNameSpace) << " number " << copyNumber
0120                                << " positioned in " << parentName << " at " << tran << " with " << rotation;
0121 
0122   xpos = (dist - dz) * sin(theta) * cos(phi);
0123   ypos = (dist - dz) * sin(theta) * sin(phi);
0124   zpos = (dist - dz) * cos(theta);
0125 
0126   edm::LogInfo("HCalGeom") << "DDHCalTestBeamAlgo: Suggested Beam position "
0127                            << "(" << xpos << ", " << ypos << ", " << zpos << ") and (dist, eta, phi) = (" << (dist - dz)
0128                            << ", " << eta << ", " << phi << ")";
0129 #endif
0130 }
0131 
0132 DEFINE_EDM_PLUGIN(DDAlgorithmFactory, DDHCalTestBeamAlgo, "hcal:DDHCalTestBeamAlgo");