[u/mrichter/AliRoot.git] / PHOS / AliPHOSGeoUtils.h

#ifndef ALIPHOSGEOUTILS_H
#define ALIPHOSGEOUTILS_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

//_________________________________________________________________________
// class for geometry transformations in PHOS
// PHOS consists of the electromagnetic calorimeter (EMCA)
// and a charged particle veto (CPV)
// 
//*-- Author: Dmitri Peressounko (RRC "KI")

// --- ROOT system ---
#include "TNamed.h"

// --- AliRoot header files ---

class TVector3;
class TParticle ;

class AliPHOSGeoUtils : public TNamed {

public: 

  AliPHOSGeoUtils() ;
  AliPHOSGeoUtils(const Text_t* name, const Text_t* title="") ;
  AliPHOSGeoUtils(const AliPHOSGeoUtils & geom) ;
  
  virtual ~AliPHOSGeoUtils(void) ; 
  AliPHOSGeoUtils & operator = (const AliPHOSGeoUtils  & rvalue) ;

  Bool_t AbsToRelNumbering(Int_t AbsId, Int_t * RelId) const ; 
                                         // converts the absolute PHOS cell numbering to a relative 
  Bool_t RelToAbsNumbering(const Int_t * RelId, Int_t & AbsId) const ; 
                                         // converts the absolute PHOS numbering to a relative         
                                         
  void RelPosInModule(const Int_t * relId, Float_t & y, Float_t & z) const ; 
                                         // gets the position of element (pad or Xtal) relative to 
                                         // center of PHOS module  
  void RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & AbsId) const; 
                                         // converts local PHOS-module (x, z) coordinates to absId 
  void RelPosToRelId(Int_t module, Double_t x, Double_t z, Int_t * relId) const; 
                                         // converts local PHOS-module (x, z) coordinates to relId 
  void RelPosInAlice(Int_t AbsId, TVector3 &  pos) const ;             
                                         // gets the position of element (pad or Xtal) relative to Alice

  void Local2Global(Int_t module, Float_t x, Float_t z, TVector3 &globaPos) const ;
              
  void Global2Local(TVector3& localPosition,const TVector3& globalPosition,Int_t module) const ;

  Bool_t GlobalPos2RelId(TVector3 & global, Int_t * relId) ;
        //Tranfers global position into numbers in PHOS cols-raws
        //Returns FALSE if local x,z beyond PHOS. Distance in perpendicular to PHOS direction is not checked.

  Bool_t ImpactOnEmc(const TParticle * particle,Int_t & ModuleNumber, Double_t & z, Double_t & x) const ;
                                         //Checks if NEUTRAL particle hits PHOS
  Bool_t ImpactOnEmc(const Double_t * vtx, const TVector3& vec,                
		   Int_t & ModuleNumber, Double_t & z, Double_t & x) const ; 
                                         // calculates the impact coordinates of a neutral particle  
                                         // emitted in direction theta and phi in ALICE
  Bool_t ImpactOnEmc(const Double_t * vtx, const Double_t theta, const Double_t phi, 
		   Int_t & ModuleNumber, Double_t & z, Double_t & x) const ; 
                                         // calculates the impact coordinates of a neutral particle  
                                         // emitted in direction theta and phi in ALICE
  void  GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x, Float_t z, TVector3& vInc) const ;
                                         //calculates vector from vertex to current point in module local frame

  Bool_t IsInEMC(Int_t id) const { if (id > fNModules *  fNCristalsInModule ) return kFALSE; return kTRUE; } 


private:
 
  void Init(void) ;  //Read all sizes etc. for EMC and CPV geometries

private:

  Int_t fNModules ;          // Maximal designed number of modules in PHOS
  Int_t fNCristalsInModule ; //Number of crystals in one module
  Int_t fNPhi ;              //Number of crystals along Phi direction
  Int_t fNZ ;                //Number of crystals along Z direction
  Int_t fNumberOfCPVPadsPhi; //Number of CPV pads along Phi direction
  Int_t fNumberOfCPVPadsZ ;  //Number of CPV pads along Z direction
  Int_t fNCellsXInStrip ;    //Number of crystals in strip
  Int_t fNCellsZInStrip ;    //Number of crystals in strip in Z direction 
  Int_t fNStripZ ;           //Number of strips in Z direction

  Float_t fCrystalShift ;    //Distance between center of module and crystal surface
  Float_t fXtlArrSize[3] ;   //Total size of cristals array
  Float_t fCryCellShift ; 
  Float_t fCellStep ; 
  Float_t fPadSizePhi ;      //Size of CPV pad in Phi direction
  Float_t fPadSizeZ ;        //Size of CPV pad in Z direction
  Float_t fCPVBoxSizeY ;

  ClassDef(AliPHOSGeoUtils,1)       // PHOS geometry class 

} ;

#endif // AliPHOSGEOUTILS_H
Commit	Line	Data
70a0fabe	1	#ifndef ALIPHOSGEOUTILS_H
	2	#define ALIPHOSGEOUTILS_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	//_________________________________________________________________________
	7	// class for geometry transformations in PHOS
	8	// PHOS consists of the electromagnetic calorimeter (EMCA)
	9	// and a charged particle veto (CPV)
	10	//
	11	//*-- Author: Dmitri Peressounko (RRC "KI")
	12
	13	// --- ROOT system ---
	14	#include "TNamed.h"
	15
	16	// --- AliRoot header files ---
	17
	18	class TVector3;
	19	class TParticle ;
	20
	21	class AliPHOSGeoUtils : public TNamed {
	22
	23	public:
	24
	25	AliPHOSGeoUtils() ;
	26	AliPHOSGeoUtils(const Text_t* name, const Text_t* title="") ;
	27	AliPHOSGeoUtils(const AliPHOSGeoUtils & geom) ;
	28
	29	virtual ~AliPHOSGeoUtils(void) ;
	30	AliPHOSGeoUtils & operator = (const AliPHOSGeoUtils & rvalue) ;
	31
	32	Bool_t AbsToRelNumbering(Int_t AbsId, Int_t * RelId) const ;
	33	// converts the absolute PHOS cell numbering to a relative
	34	Bool_t RelToAbsNumbering(const Int_t * RelId, Int_t & AbsId) const ;
	35	// converts the absolute PHOS numbering to a relative
	36
	37	void RelPosInModule(const Int_t * relId, Float_t & y, Float_t & z) const ;
	38	// gets the position of element (pad or Xtal) relative to
	39	// center of PHOS module
	40	void RelPosToAbsId(Int_t module, Double_t x, Double_t z, Int_t & AbsId) const;
	41	// converts local PHOS-module (x, z) coordinates to absId
	42	void RelPosToRelId(Int_t module, Double_t x, Double_t z, Int_t * relId) const;
	43	// converts local PHOS-module (x, z) coordinates to relId
	44	void RelPosInAlice(Int_t AbsId, TVector3 & pos) const ;
	45	// gets the position of element (pad or Xtal) relative to Alice
	46
	47	void Local2Global(Int_t module, Float_t x, Float_t z, TVector3 &globaPos) const ;
	48
	49	void Global2Local(TVector3& localPosition,const TVector3& globalPosition,Int_t module) const ;
	50
f4aea312	51	Bool_t GlobalPos2RelId(TVector3 & global, Int_t * relId) ;
	52	//Tranfers global position into numbers in PHOS cols-raws
	53	//Returns FALSE if local x,z beyond PHOS. Distance in perpendicular to PHOS direction is not checked.
	54
70a0fabe	55	Bool_t ImpactOnEmc(const TParticle * particle,Int_t & ModuleNumber, Double_t & z, Double_t & x) const ;
	56	//Checks if NEUTRAL particle hits PHOS
	57	Bool_t ImpactOnEmc(const Double_t * vtx, const TVector3& vec,
	58	Int_t & ModuleNumber, Double_t & z, Double_t & x) const ;
	59	// calculates the impact coordinates of a neutral particle
	60	// emitted in direction theta and phi in ALICE
	61	Bool_t ImpactOnEmc(const Double_t * vtx, const Double_t theta, const Double_t phi,
	62	Int_t & ModuleNumber, Double_t & z, Double_t & x) const ;
	63	// calculates the impact coordinates of a neutral particle
	64	// emitted in direction theta and phi in ALICE
	65	void GetIncidentVector(const TVector3 &vtx, Int_t module, Float_t x, Float_t z, TVector3& vInc) const ;
	66	//calculates vector from vertex to current point in module local frame
	67
	68	Bool_t IsInEMC(Int_t id) const { if (id > fNModules * fNCristalsInModule ) return kFALSE; return kTRUE; }
	69
	70
	71	private:
	72
	73	void Init(void) ; //Read all sizes etc. for EMC and CPV geometries
	74
	75	private:
	76
	77	Int_t fNModules ; // Maximal designed number of modules in PHOS
	78	Int_t fNCristalsInModule ; //Number of crystals in one module
	79	Int_t fNPhi ; //Number of crystals along Phi direction
	80	Int_t fNZ ; //Number of crystals along Z direction
	81	Int_t fNumberOfCPVPadsPhi; //Number of CPV pads along Phi direction
	82	Int_t fNumberOfCPVPadsZ ; //Number of CPV pads along Z direction
	83	Int_t fNCellsXInStrip ; //Number of crystals in strip
	84	Int_t fNCellsZInStrip ; //Number of crystals in strip in Z direction
	85	Int_t fNStripZ ; //Number of strips in Z direction
	86
	87	Float_t fCrystalShift ; //Distance between center of module and crystal surface
	88	Float_t fXtlArrSize[3] ; //Total size of cristals array
	89	Float_t fCryCellShift ;
	90	Float_t fCellStep ;
	91	Float_t fPadSizePhi ; //Size of CPV pad in Phi direction
	92	Float_t fPadSizeZ ; //Size of CPV pad in Z direction
	93	Float_t fCPVBoxSizeY ;
	94
	95	ClassDef(AliPHOSGeoUtils,1) // PHOS geometry class
	96
	97	} ;
	98
	99	#endif // AliPHOSGEOUTILS_H