--- /dev/null
+#ifndef ALIEMCALGEOUTILS_H
+#define ALIEMCALGEOUTILS_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+//_________________________________________________________________________
+// class for geometry transformations in EMCAL
+// this class contains AliRoot-independent transformations,
+// AliRoot part is in AliEMCALGeometry
+//
+//*-- Author: Magali Estienne
+
+// --- ROOT system ---
+#include <TNamed.h>
+#include <TMath.h>
+#include <TArrayD.h>
+#include <TVector3.h>
+class TBrowser ;
+class TParticle ;
+class TGeoHMatrix ;
+
+// --- AliRoot header files ---
+#include "AliEMCALEMCGeometry.h"
+class AliEMCALShishKebabTrd1Module;
+#include "AliLog.h"
+
+class AliEMCALGeoUtils : public TNamed {
+
+public:
+
+ AliEMCALGeoUtils();
+ AliEMCALGeoUtils(const Text_t* name, const Text_t* title="");
+ AliEMCALGeoUtils(const AliEMCALGeoUtils & geom);
+
+ virtual ~AliEMCALGeoUtils(void);
+ AliEMCALGeoUtils & operator = (const AliEMCALGeoUtils & rvalue);
+
+ /////////////
+ // TRD1 stuff
+ void CreateListOfTrd1Modules();
+ TList *GetShishKebabTrd1Modules() const {return fShishKebabTrd1Modules;}
+ AliEMCALShishKebabTrd1Module *GetShishKebabModule(Int_t neta) const;
+
+ void PrintGeometry();
+ void PrintCellIndexes(Int_t absId=0, int pri=0, const char *tit="") const ; //*MENU*
+ virtual void Browse(TBrowser* b);
+ virtual Bool_t IsFolder() const;
+
+ virtual Bool_t Impact(const TParticle *) const;
+ void ImpactOnEmcal(TVector3 vtx, Double_t theta, Double_t phi, Int_t & absId, TVector3 & vimpact) const;
+ Bool_t IsInEMCAL(Double_t x, Double_t y, Double_t z) const;
+
+
+ AliEMCALEMCGeometry* GetEMCGeometry() const { return fEMCGeometry;}
+
+ //////////////////////////
+ // Global geometry methods
+ //
+ void GetGlobal(const Double_t *loc, Double_t *glob, int ind) const;
+ void GetGlobal(const TVector3 &vloc, TVector3 &vglob, int ind) const;
+ void GetGlobal(Int_t absId, Double_t glob[3]) const;
+ void GetGlobal(Int_t absId, TVector3 &vglob) const;
+
+ ////////////////////////////////////////
+ // May 31, 2006; ALICE numbering scheme:
+ // see ALICE-INT-2003-038: ALICE Coordinate System and Software Numbering Convention
+ // All indexes are stared from zero now.
+ //
+ // abs id <-> indexes; Shish-kebab case, only TRD1 now.
+ // EMCAL -> Super Module -> module -> tower(or cell) - logic tree of EMCAL
+ //
+ //** Usual name of variable - Dec 18,2006 **
+ // nSupMod - index of super module (SM)
+ // nModule - index of module in SM
+ // nIphi - phi index of tower(cell) in module
+ // nIeta - eta index of tower(cell) in module
+ //
+ // Inside SM
+ // iphim - phi index of module in SM
+ // ietam - eta index of module in SM
+ //
+ // iphi - phi index of tower(cell) in SM
+ // ieta - eta index of tower(cell) in SM
+ //
+ // for a given tower index absId returns eta and phi of gravity center of tower.
+ void EtaPhiFromIndex(Int_t absId, Double_t &eta, Double_t &phi) const;
+ void EtaPhiFromIndex(Int_t absId, Float_t &eta, Float_t &phi) const;
+
+ Bool_t GetAbsCellIdFromEtaPhi(Double_t eta,Double_t phi, Int_t &absId) const;
+ Bool_t SuperModuleNumberFromEtaPhi(Double_t eta, Double_t phi, Int_t &nSupMod) const;
+ Int_t GetAbsCellId(Int_t nSupMod, Int_t nModule, Int_t nIphi, Int_t nIeta) const;
+ Bool_t CheckAbsCellId(Int_t absId) const;
+ Bool_t GetCellIndex(Int_t absId, Int_t &nSupMod, Int_t &nModule, Int_t &nIphi,
+ Int_t &nIeta) const;
+ // Local coordinate of Super Module
+ void GetModulePhiEtaIndexInSModule(Int_t nSupMod, Int_t nModule, Int_t &iphim,
+ Int_t &ietam) const;
+ void GetCellPhiEtaIndexInSModule(Int_t nSupMod, Int_t nModule, Int_t nIphi, Int_t nIeta,
+ Int_t &iphi, Int_t &ieta) const ;
+ Int_t GetSuperModuleNumber(Int_t absId) const;
+ Int_t GetNumberOfModuleInPhiDirection(Int_t nSupMod) const
+ {
+ if(fKey110DEG == 1 && nSupMod>=10) return fNPhi/2;
+ else return fNPhi;
+ }
+ // From cell indexes to abs cell id
+ void GetModuleIndexesFromCellIndexesInSModule(Int_t nSupMod, Int_t iphi, Int_t ieta,
+ Int_t &iphim, Int_t &ietam, Int_t &nModule) const;
+ Int_t GetAbsCellIdFromCellIndexes(Int_t nSupMod, Int_t iphi, Int_t ieta) const;
+
+ // Methods for AliEMCALRecPoint - Feb 19, 2006
+ Bool_t RelPosCellInSModule(Int_t absId, Double_t &xr, Double_t &yr, Double_t &zr) const;
+ Bool_t RelPosCellInSModule(Int_t absId, Double_t loc[3]) const;
+ Bool_t RelPosCellInSModule(Int_t absId, TVector3 &vloc) const;
+
+ // Local Coordinates of SM
+ TArrayD GetCentersOfCellsEtaDir() const {return fCentersOfCellsEtaDir;} // size fNEta*fNETAdiv (for TRD1 only) (eta or z in SM, in cm)
+ TArrayD GetCentersOfCellsXDir() const {return fCentersOfCellsXDir;} // size fNEta*fNETAdiv (for TRD1 only) ( x in SM, in cm)
+ TArrayD GetCentersOfCellsPhiDir() const {return fCentersOfCellsPhiDir;} // size fNPhi*fNPHIdiv (for TRD1 only) (phi or y in SM, in cm)
+ //
+ TArrayD GetEtaCentersOfCells() const {return fEtaCentersOfCells;} // [fNEta*fNETAdiv*fNPhi*fNPHIdiv], positive direction (eta>0); eta depend from phi position;
+ TArrayD GetPhiCentersOfCells() const {return fPhiCentersOfCells;} // [fNPhi*fNPHIdiv] from center of SM (-10. < phi < +10.)
+
+ //
+ // Tranforms Eta-Phi Module index in TRU into Eta-Phi index in Super Module
+ void GetModulePhiEtaIndexInSModuleFromTRUIndex(
+ Int_t itru, Int_t iphitru, Int_t ietatru, Int_t &ietaSM, Int_t &iphiSM) const;
+ Int_t GetAbsTRUNumberFromNumberInSm(const Int_t row, const Int_t col, const Int_t sm) const ;
+
+
+
+ ///////////////////
+ // useful utilities
+ //
+ Float_t AngleFromEta(Float_t eta) const { // returns theta in radians for a given pseudorapidity
+ return 2.0*TMath::ATan(TMath::Exp(-eta));
+ }
+ Float_t ZFromEtaR(Float_t r,Float_t eta) const { // returns z in for a given
+ // pseudorapidity and r=sqrt(x*x+y*y).
+ return r/TMath::Tan(AngleFromEta(eta));
+ }
+
+ //Method to set shift-rotational matrixes from ESDHeader
+ void SetMisalMatrix(const TGeoHMatrix * m, Int_t smod) {
+ if (smod >= 0 && smod < fEMCGeometry->GetNumberOfSuperModules()) fkSModuleMatrix[smod] = m ;
+ else AliFatal(Form("Wrong supermodule index -> %d",smod));
+ }
+
+protected:
+ //Returns shift-rotational matrixes for different volumes
+ const TGeoHMatrix * GetMatrixForSuperModule(Int_t smod)const ;
+
+protected:
+
+ // ctor only for internal usage (singleton)
+ // AliEMCALGeoUtils(const Text_t* name, const Text_t* title);
+ AliEMCALEMCGeometry *fEMCGeometry; // Geometry object for Electromagnetic calorimeter
+
+ void Init(void); // initializes the parameters of EMCAL
+
+ TString fGeoName; //geometry name
+
+ Int_t fKey110DEG; // for calculation abs cell id; 19-oct-05
+ Int_t fNCellsInSupMod; // number cell in super module
+ Int_t fNETAdiv; // number eta divizion of module
+ Int_t fNPHIdiv; // number phi divizion of module
+ Int_t fNCellsInModule; // number cell in module
+ TArrayD fPhiBoundariesOfSM; // phi boundaries of SM in rad; size is fNumberOfSuperModules;
+ TArrayD fPhiCentersOfSM; // phi of centers of SMl size is fNumberOfSuperModules/2
+ // Local Coordinates of SM
+ TArrayD fPhiCentersOfCells; // [fNPhi*fNPHIdiv] from center of SM (-10. < phi < +10.)
+ TArrayD fCentersOfCellsEtaDir; // size fNEta*fNETAdiv (for TRD1 only) (eta or z in SM, in cm)
+ TArrayD fCentersOfCellsPhiDir; // size fNPhi*fNPHIdiv (for TRD1 only) (phi or y in SM, in cm)
+ TArrayD fEtaCentersOfCells; // [fNEta*fNETAdiv*fNPhi*fNPHIdiv], positive direction (eta>0); eta depend from phi position;
+ Int_t fNCells; // number of cells in calo
+ Int_t fNPhi; // Number of Towers in the PHI direction
+ TArrayD fCentersOfCellsXDir; // size fNEta*fNETAdiv (for TRD1 only) ( x in SM, in cm)
+ Float_t fEnvelop[3]; // the GEANT TUB for the detector
+ Float_t fArm1EtaMin; // Minimum pseudorapidity position of EMCAL in Eta
+ Float_t fArm1EtaMax; // Maximum pseudorapidity position of EMCAL in Eta
+ Float_t fArm1PhiMin; // Minimum angular position of EMCAL in Phi (degrees)
+ Float_t fArm1PhiMax; // Maximum angular position of EMCAL in Phi (degrees)
+ Float_t fEtaMaxOfTRD1; // Max eta in case of TRD1 geometry (see AliEMCALShishKebabTrd1Module)
+ TList *fShishKebabTrd1Modules; //! list of modules
+ Float_t *fParSM; // SM sizes as in GEANT (TRD1)
+ Float_t fPhiModuleSize; // Phi -> X
+ Float_t fEtaModuleSize; // Eta -> Y
+ Float_t fPhiTileSize; // Size of phi tile
+ Float_t fEtaTileSize; // Size of eta tile
+ Int_t fNZ; // Number of Towers in the Z direction
+ Float_t fIPDistance; // Radial Distance of the inner surface of the EMCAL
+ Float_t fLongModuleSize; // Size of long module
+ // Geometry Parameters
+ Float_t fShellThickness; // Total thickness in (x,y) direction
+ Float_t fZLength; // Total length in z direction
+ Float_t fSampling; // Sampling factor
+
+ const TGeoHMatrix* fkSModuleMatrix[12] ; //Orientations of EMCAL super modules
+
+
+ ClassDef(AliEMCALGeoUtils,1) // EMCAL geometry class
+
+} ;
+
+#endif // AliEMCALGEOUTILS_H
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