-#ifndef ITSGEOM_H
-#define ITSGEOM_H
+#ifndef ALIITSGEOM_H
+#define ALIITSGEOM_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+/* $Id$ */
+
/////////////////////////////////////////////////////////////////////////
// ITS geometry manipulation routines.
// Created April 15 1999.
// the information needed to do the coordinate transformation are kept in
// a specialized structure for ease of implementation.
/////////////////////////////////////////////////////////////////////////
-#include <fstream.h>
-#include "TObjArray.h"
-#include "AliITSgeomSPD.h"
-#include "AliITSgeomSDD.h"
-#include "AliITSgeomSSD.h"
+#include <Riostream.h>
+#include <TObject.h>
+#include <TObjArray.h>
+#include <TVector.h>
+#include <TString.h>
+#include <TArrayI.h>
+#include <TMath.h>
+//
+#include "AliITSgeomMatrix.h"
-////////////////////////////////////////////////////////////////////////
-// The structure ITS_geom:
-// The structure ITS_geom has been defined to hold all of the
-// information necessary to do the coordinate transformations for one
-// detector between the ALICE Cartesian global and the detector local
-// coordinate systems. The rotations are implemented in the following
-// order, Rz*Ry*Rx*(Vglobal-Vtrans)=Vlocal (in matrix notation).
-// In addition it contains an index to the TObjArray containing all of
-// the information about the shape of the active detector volume, and
-// any other useful detector parameters. See the definition of *fShape
-// below and the classes AliITSgeomSPD, AliITSgeomSDD, and AliITSgeomSSD
-// for a full description. This structure is not available outside of
-// these routines.
-//
-// Int_t fShapeIndex
-// The index to the array of detector shape information. In this way
-// only an index is needed to be stored and not all of the shape
-// information. This saves much space since most, if not all, of the
-// detectors of a give type have the same shape information and are only
-// placed in a different spot in the ALICE/ITS detector.
-//
-// Float_t fx0,fy0,fz0
-// The Cartesian translation vector used to define part of the
-// coordinate transformation. The units of the translation are kept
-// in the Monte Carlo distance units, usually cm.
-//
-// Float_t frx,fry,frz
-// The three rotation angles that define the rotation matrix. The
-// angles are, frx the rotation about the x axis. fry the rotation about
-// the "new" or "rotated" y axis. frz the rotation about the "new" or
-// "rotated" z axis. These angles, although redundant with the rotation
-// matrix fr, are kept for speed. This allows for their retrieval without
-// having to compute them each and every time. The angles are kept in
-// radians
-//
-// Float_t fr[9]
-// The 3x3 rotation matrix defined by the angles frx, fry, and frz,
-// for the Global to Local transformation is
-// |fr[0] fr[1] fr[2]| | cos(frz) sin(frz) 0| | cos(fry) 0 sin(fry)|
-// fr=|fr[3] fr[4] fr[4]|=|-sin(frz) cos(frz) 0|*| 0 1 0 |
-// |fr[6] fr[7] fr[8]| | 0 0 1| |-sin(fry) 0 cos(fry)|
-//
-// |1 0 0 |
-// *|0 cos(frx) sin(frx)|
-// |0 -sin(frx) cos(frx)|
-//
-// Even though this information is redundant with the three rotation
-// angles, because this transformation matrix can be used so much it is
-// kept to speed things up a lot. The coordinate system used is Cartesian.
-////////////////////////////////////////////////////////////////////////
-
-struct ITS_geom {
- Int_t fShapeIndex; // Shape index for this volume
- Float_t fx0,fy0,fz0; // Translation vector
- Float_t frx,fry,frz; // Rotation about axis, angle radians
- Float_t fr[9]; // the rotation matrix
-};
+typedef enum {kND=-1,kSPD=0, kSDD=1, kSSD=2, kSSDp=3,kSDDp=4} AliITSDetector;
//_______________________________________________________________________
class AliITSgeom : public TObject {
-////////////////////////////////////////////////////////////////////////
-//
-// version: 0
-// Written by Bjorn S. Nilsen
-//
-// Data Members:
-//
-// Int_t fNlayers
-// The number of ITS layers for this geometry. By default this
-// is 6, but can be modified by the creator function if there are
-// more layers defined.
-//
-// Int_t *fNlad
-// A pointer to an array fNlayers long containing the number of
-// ladders for each layer. This array is typically created and filled
-// by the AliITSgeom creator function.
-//
-// Int_t *fNdet
-// A pointer to an array fNlayers long containing the number of
-// active detector volumes for each ladder. This array is typically
-// created and filled by the AliITSgeom creator function.
-//
-// ITS_geom **fg
-// A pointer to an array of pointers pointing to the ITS_geom
-// structure containing the coordinate transformation information.
-// The ITS_geom structure corresponding to layer=lay, ladder=lad,
-// and detector=det is gotten by fg[lay-1][(fNlad[lay-1]*(lad-1)+det-1)].
-// In this way a lot of space is saved over trying to keep a three
-// dimensional array fNlayersXmax(fNlad)Xmax(fNdet), since the number
-// of detectors typically increases with layer number.
-//
-// TObjArray *fShape
-// A pointer to an array of TObjects containing the detailed shape
-// information for each type of detector used in the ITS. For example
-// I have created AliITSgeomSPD, AliITSgeomSDD, and AliITSgeomSSD as
-// example structures, derived from TObjects, to hold the detector
-// information. I would recommend that one element in each of these
-// structures, that which describes the shape of the active volume,
-// be one of the ROOT classes derived from TShape. In this way it would
-// be easy to have the display program display the correct active
-// ITS volumes. See the example classes AliITSgeomSPD, AliITSgeomSDD,
-// and AliITSgeomSSD for a more detailed example.
-//
-// Member Functions:
-//
-// AliITSgeom()
-// The default constructor for the AliITSgeom class. It, by default,
-// sets fNlayers to zero and zeros all pointers.
-//
-// AliITSgeom(const char *filename)
-// The constructor for the AliITSgeom class. All of the data to fill
-// this structure is read in from the file given my the input filename.
-//
-// AliITSgeom(AliITSgeom &source)
-// The copy constructor for the AliITSgeom class. It calls the
-// = operator function. See the = operator function for more details.
-//
-// void operator=(AliITSgeom &source)
-// The = operator function for the AliITSgeom class. It makes an
-// independent copy of the class in such a way that any changes made
-// to the copied class will not affect the source class in any way.
-// This is required for many ITS alignment studies where the copied
-// class is then modified by introducing some misalignment.
-//
-// ~AliITSgeom()
-// The destructor for the AliITSgeom class. If the arrays fNlad,
-// fNdet, or fg have had memory allocated to them, there pointer values
-// are non zero, then this memory space is freed and they are set
-// to zero. In addition, fNlayers is set to zero. The destruction of
-// TObjArray fShape is, by default, handled by the TObjArray destructor.
-//
-// Int_t GetNdetectors(Int_t layer)
-// This function returns the number of detectors/ladder for a give
-// layer. In particular it returns fNdet[layer-1].
-//
-// Int_t GetNladders(Int_t layer)
-// This function returns the number of ladders for a give layer. In
-// particular it returns fNlad[layer-1].
-//
-// Int_t GetNlayers()
-// This function returns the number of layers defined in the ITS
-// geometry. In particular it returns fNlayers.
-//
-// GetAngles(Int_t layer,Int_t ladder,Int_t detector,
-// Float_t &rx, Float_t &ry, Float_t &rz)
-// This function returns the rotation angles for a give detector on
-// a give ladder in a give layer in the three floating point variables
-// provided. rx = frx, fy = fry, rz = frz. The angles are in radians
-//
-// GetTrans(Int_t layer,Int_t ladder,Int_t detector,
-// Float_t &x, Float_t &y, Float_t &z)
-// This function returns the Cartesian translation for a give
-// detector on a give ladder in a give layer in the three floating
-// point variables provided. x = fx0, y = fy0, z = fz0. The units are
-// those of the Monte Carlo, generally cm.
-//
-// SetByAngles(Int_t layer,Int_t ladder,Int_t detector,
-// Float_t &rx, Float_t &ry, Float_t &rz)
-// This function computes a new rotation matrix based on the angles
-// rx, ry, and rz (in radians) for a give detector on the give ladder
-// in the give layer. A new
-// fg[layer-1][(fNlad[layer-1]*(ladder-1)+detector-1)].fr[] array is
-// computed.
-//
-// SetTrans(Int_t layer,Int_t ladder,Int_t detector,
-// Float_t x, Float_t y, Float_t z)
-// This function sets a new translation vector, given by the three
-// variables x, y, and z, for the Cartesian coordinate transformation
-// for the detector defined by layer, ladder and detector.
-//
-// GetRotMatrix(Int_t layer, Int_t ladder, Int_t detector, Float_t *mat)
-// Returns, in the Float_t array pointed to by mat, the full rotation
-// matrix for the give detector defined by layer, ladder, and detector.
-// It returns all nine elements of fr in the ITS_geom structure. See the
-// description of the ITS_geom structure for further details of this
-// rotation matrix.
-//
-// GtoL(Int_t layer, Int_t ladder, Int_t detector,
-// const Float_t *g, Float_t *l)
-// The function that does the global ALICE Cartesian coordinate
-// to local active volume detector Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The global coordinates are entered by
-// the three element Float_t array g and the local coordinate values
-// are returned by the three element Float_t array l. The order of the
-// three elements are g[0]=x, g[1]=y, and g[2]=z, similarly for l.
-//
-// GtoL(const Int_t *Id, const Float_t *g, Float_t *l)
-// The function that does the global ALICE Cartesian coordinate
-// to local active volume detector Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the three
-// element array Id containing as it's three elements Id[0]=layer,
-// Id[1]=ladder, and Id[2]=detector numbers. The global coordinates
-// are entered by the three element Float_t array g and the local
-// coordinate values are returned by the three element Float_t array l.
-// The order of the three elements are g[0]=x, g[1]=y, and g[2]=z,
-// similarly for l.
-//
-// LtoG(Int_t layer, Int_t ladder, Int_t detector,
-// const Float_t *l, Float_t *g)
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the layer,
-// ladder, and detector numbers. The local coordinates are entered by
-// the three element Float_t array l and the global coordinate values
-// are returned by the three element Float_t array g. The order of the
-// three elements are l[0]=x, l[1]=y, and l[2]=z, similarly for g.
-//
-// LtoG(const Int_t *Id, const Float_t *l, Float_t *g)
-// The function that does the local active volume detector Cartesian
-// coordinate to global ALICE Cartesian coordinate transformation.
-// The local detector coordinate system is determined by the three
-// element array Id containing as it's three elements Id[0]=layer,
-// Id[1]=ladder, and Id[2]=detector numbers. The local coordinates
-// are entered by the three element Float_t array l and the global
-// coordinate values are returned by the three element Float_t array g.
-// The order of the three elements are l[0]=x, l[1]=y, and l[2]=z,
-// similarly for g.
-//
-// Int_t IsVersion()
-// This function returns the version number of this AliITSgeom
-// class.
-//
-// AddShape(TObject *shape)
-// This function adds one more shape element to the TObjArray
-// fShape. It is primarily used in the constructor functions of the
-// AliITSgeom class. The pointer *shape can be the pointer to any
-// class that is derived from TObject (this is true for nearly every
-// ROOT class). This does not appear to be working properly at this time.
-//
-// PrintComparison(FILE *fp, AliITSgeom *other)
-// This function was primarily created for diagnostic reasons. It
-// print to a file pointed to by the file pointer fp the difference
-// between two AliITSgeom classes. The format of the file is basicly,
-// define d? to be the difference between the same element of the two
-// classes. For example dfrx = this->fg[i][j].frx - other->fg[i][j].frx.
-// if(at least one of dfx0, dfy0, dfz0,dfrx,dfry,dfrz are non zero) then print
-// layer ladder detector dfx0 dfy0 dfz0 dfrx dfry dfrz
-// if(at least one of the 9 elements of dfr[] are non zero) then print
-// layer ladder detector dfr[0] dfr[1] dfr[2]
-// dfr[3] dfr[4] dfr[5]
-// dfr[6] dfr[7] dfr[8]
-// Only non zero values are printed to save space. The differences are
-// typical written to a file because there are usually a lot of numbers
-// printed out and it is usually easier to read them in some nice editor
-// rather than zooming quickly past you on a screen. fprintf is used to
-// do the printing. The fShapeIndex difference is not printed at this time.
-//
-// PrintData(FILE *fp, Int_t layer, Int_t ladder, Int_t detector)
-// This function prints out the coordinate transformations for
-// the particular detector defined by layer, ladder, and detector
-// to the file pointed to by the File pointer fp. fprinf statements
-// are used to print out the numbers. The format is
-// layer ladder detector Trans= fx0 fy0 fz0 rot= frx fry frz Shape=fShapeIndex
-// dfr= fr[0] fr[1] fr[2]
-// dfr= fr[3] fr[4] fr[5]
-// dfr= fr[6] fr[7] fr[8]
-// By indicating which detector, some control over the information
-// is given to the user. The output it written to the file pointed
-// to by the file pointer fp. This can be set to stdout if you want.
-//
-// Streamer(TBuffer &R__b)
-// The default Streamer function "written by ROOT" doesn't write out
-// the arrays referenced by pointers. Therefore, a specific Streamer function
-// has to be written. This function should not be modified but instead added
-// on to so that older versions can still be read. The proper handling of
-// the version dependent streamer function hasn't been written do to the lack
-// of finding an example at the time of writting.
-//
-//----------------------------------------------------------------------
-//
-// The following member functions are defined to modify an existing
-// AliITSgeom data structure. They were developed for the use in doing
-// alignment studies of the ITS.
-//
-// GlobalChange(Float_t *dtranslation, Float_t *drotation)
-// This function performs a Cartesian translation and rotation of
-// the full ITS from its default position by an amount determined by
-// the three element arrays dtranslation and drotation. If every element
-// of dtranslation and drotation are zero then there is no change made
-// the geometry. The change is global in that the exact same translation
-// and rotation is done to every detector element in the exact same way.
-// The units of the translation are those of the Monte Carlo, usually cm,
-// and those of the rotation are in radians. The elements of dtranslation
-// are dtranslation[0] = x, dtranslation[1] = y, and dtranslation[2] = z.
-// The elements of drotation are drotation[0] = rx, drotation[1] = ry, and
-// drotation[2] = rz. A change in x will move the hole ITS in the ALICE
-// global x direction, the same for a change in y. A change in z will
-// result in a translation of the ITS as a hole up or down the beam line.
-// A change in the angles will result in the inclination of the ITS with
-// respect to the beam line, except for an effective rotation about the
-// beam axis which will just rotate the ITS as a hole about the beam axis.
-//
-// GlobalCylindericalChange(Float_t *dtranslation, Float_t *drotation)
-// This function performs a cylindrical translation and rotation of
-// each ITS element by a fixed about in radius, rphi, and z from its
-// default position by an amount determined by the three element arrays
-// dtranslation and drotation. If every element of dtranslation and
-// drotation are zero then there is no change made the geometry. The
-// change is global in that the exact same distance change in translation
-// and rotation is done to every detector element in the exact same way.
-// The units of the translation are those of the Monte Carlo, usually cm,
-// and those of the rotation are in radians. The elements of dtranslation
-// are dtranslation[0] = r, dtranslation[1] = rphi, and dtranslation[2] = z.
-// The elements of drotation are drotation[0] = rx, drotation[1] = ry, and
-// drotation[2] = rz. A change in r will results in the increase of the
-// radius of each layer by the same about. A change in rphi will results in
-// the rotation of each layer by a different angle but by the same
-// circumferential distance. A change in z will result in a translation
-// of the ITS as a hole up or down the beam line. A change in the angles
-// will result in the inclination of the ITS with respect to the beam
-// line, except for an effective rotation about the beam axis which will
-// just rotate the ITS as a hole about the beam axis.
-//
-// RandomChange(Float_t *stranslation, Float_t *srotation)
-// This function performs a Gaussian random displacement and/or
-// rotation about the present global position of each active
-// volume/detector of the ITS. The sigma of the random displacement
-// is determined by the three element array stranslation, for the
-// x y and z translations, and the three element array srotation,
-// for the three rotation about the axis x y and z.
-//
-// RandomCylindericalChange(Float_t *stranslation, Float_t *srotation)
-// This function performs a Gaussian random displacement and/or
-// rotation about the present global position of each active
-// volume/detector of the ITS. The sigma of the random displacement
-// is determined by the three element array stranslation, for the
-// r rphi and z translations, and the three element array srotation,
-// for the three rotation about the axis x y and z. This random change
-// in detector position allow for the simulation of a random uncertainty
-// in the detector positions of the ITS.
-////////////////////////////////////////////////////////////////////////
- private:
- Int_t fNlayers; // The number of layers.
- Int_t *fNlad; // Array of the number of ladders/layer(layer)
- Int_t *fNdet; // Array of the number of detectors/ladder(layer)
- ITS_geom **fg; // Structure of translation and rotation.
- TObjArray *fShape; // Array of shapes and detector information.
public:
AliITSgeom(); // Default constructor
AliITSgeom(const char *filename); // Constructor
- AliITSgeom(AliITSgeom &source); // Copy constructor
- void operator=(AliITSgeom &source);// = operator
+ AliITSgeom(Int_t itype,Int_t nlayers,const Int_t *nlads,const Int_t *ndets,
+ Int_t nmods); // Constructor
+ AliITSgeom(const AliITSgeom &source); // Copy constructor
+ AliITSgeom& operator=(const AliITSgeom &source);// = operator
virtual ~AliITSgeom(); // Default destructor
- // this is a dummy routine for now.
- inline Int_t GetNdetectors(Int_t layer) {return fNdet[layer-1];}
- inline Int_t GetNladders(Int_t layer) {return fNlad[layer-1];}
- inline Int_t GetNlayers() {return fNlayers;}
- inline void GetAngles(Int_t lay,Int_t lad,Int_t det,
- Float_t &rx,Float_t &ry,Float_t &rz){
- rx = fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].frx;
- ry = fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].fry;
- rz = fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].frz;}
- inline void GetTrans(Int_t lay,Int_t lad,Int_t det,
- Float_t &x,Float_t &y,Float_t &z){
- x = fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].fx0;
- y = fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].fy0;
- z = fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].fz0;}
+ // Zero and reinitilizes this class.
+ void Init(Int_t itype,Int_t nlayers,const Int_t *nlads,
+ const Int_t *ndets,Int_t mods);
+ // this function allocates a AliITSgeomMatrix for a particular module.
+ void CreateMatrix(Int_t mod,Int_t lay,Int_t lad,Int_t det,
+ AliITSDetector idet,const Double_t tran[3],
+ const Double_t rot[10]);
+ void ReadNewFile(const char *filename); // Constructor for new format.
+ void WriteNewFile(const char *filename)const; // Output for new format.
+ // Getters
+ Int_t GetTransformationType() const {return fTrans;}
+ //
+ // returns kTRUE if the transformation defined by this class is
+ // for Global GEANT coordinate system to the local GEANT coordinate system
+ // of the detector. These are the transformation used by GEANT.
+ Bool_t IsGeantToGeant() const {return (fTrans == 0);}
+ // returns kTRUE if the transformation defined by this class is
+ // for Global GEANT coordinate system to the local "Tracking" coordinate
+ // system of the detector. These are the transformation used by the
+ // Tracking code.
+ Bool_t IsGeantToTracking() const {return ((fTrans&&0xfffe)!= 0);}
+ // returns kTRUE if the transformation defined by this class is
+ // for Global GEANT coordinate system to the local GEANT coordinate system
+ // of the detector but may have been displaced by some typically small
+ // amount. These are modified transformation similar to that used by GEANT.
+ Bool_t IsGeantToDisplaced() const {return ((fTrans&&0xfffd)!= 0);}
+ // returns kTRUE if the shape defined by ishape has been defined in this
+ // set of transformations. Typical values of ishape are kSPD, kSDD, kSSD,
+ // kSSD2.
+ Bool_t IsShapeDefined(Int_t ishape)const {
+ return ((fShape.At(ishape))!=0);}
+ //
+ // This function returns a pointer to the particular AliITSgeomMatrix
+ // class for a specific module index.
+ AliITSgeomMatrix *GetGeomMatrix(Int_t index){if(index<fGm.GetSize()&&
+ index>=0)
+ return (AliITSgeomMatrix*)(fGm.At(index));else
+ Error("GetGeomMatrix","index=%d<0||>=GetSize()=%d",
+ index,fGm.GetSize());return 0;}
+ AliITSgeomMatrix *GetGeomMatrix(Int_t index)const{if(index<fGm.GetSize()
+ &&index>=0)
+ return (AliITSgeomMatrix*)(fGm.At(index));else
+ Error("GetGeomMatrix","index=%d<0||>=GetSize()=%d",
+ index,fGm.GetSize());return 0;}
+ // This function find and return the number of detector types only.
+ Int_t GetNDetTypes()const{Int_t max;return GetNDetTypes(max);};
+ // This function find and return the number of detector types and the
+ // maximum det type value.
+ Int_t GetNDetTypes(Int_t &max)const;
+ // This function finds and return the number of detector types and the
+ // and the number of each type in the TArrayI and their types.
+ Int_t GetNDetTypes(TArrayI &maxs,AliITSDetector *types)const;
+ // This function returns the number of detectors/ladder for a give
+ // layer. In particular it returns fNdet[layer-1].
+ Int_t GetNdetectors(Int_t lay) const {return fNdet[lay-1];}
+ // This function returns the number of ladders for a give layer. In
+ // particular it returns fNlad[layer-1].
+ Int_t GetNladders(Int_t lay) const {return fNlad[lay-1];};
+ // This function returns the number of layers defined in the ITS
+ // geometry. In particular it returns fNlayers.
+ Int_t GetNlayers() const {return fNlayers;}
+ Int_t GetModuleIndex(Int_t lay,Int_t lad,Int_t det)const;
+ // This function returns the module index number given the layer,
+ // ladder and detector numbers put into the array id[3].
+ Int_t GetModuleIndex(const Int_t *id)const{
+ return GetModuleIndex(id[0],id[1],id[2]);}
+ void GetModuleId(Int_t index,Int_t &lay,Int_t &lad,Int_t &det)const;
+ // Returns the detector type
+ //Int_t GetModuleType(Int_t index)const{
+ // return GetGeomMatrix(index)->GetDetectorIndex();}
+ AliITSDetector GetModuleType(Int_t index)const{
+ return (AliITSDetector)(GetGeomMatrix(index)->GetDetectorIndex());}
+ // Returns the detector type as a string
+ const char * GetModuleTypeName(Int_t index)const{
+ return GetDetectorTypeName(GetModuleType(index));}
+ // Returns the detector type as a string
+ const char * GetDetectorTypeName(Int_t index)const{switch(index) {
+ case kSPD : return "kSPD" ; case kSDD : return "kSDD" ;
+ case kSSD : return "kSSD" ; case kSSDp: return "kSSDp";
+ case kSDDp: return "kSDDp"; default : return "Undefined";};}
+ //
+ Int_t GetStartDet(Int_t dtype )const;
+ Int_t GetLastDet(Int_t dtype)const;
+ // Returns the starting module index number for SPD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetStartSPD()const{return GetStartDet(kSPD);}
+ // Returns the ending module index number for SPD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetLastSPD()const{return GetLastDet(kSPD);}
+ // Returns the starting module index number for SDD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetStartSDD()const{return GetStartDet(kSDD);}
+ // Returns the ending module index number for SDD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetLastSDD()const{return GetLastDet(kSDD);}
+ // Returns the starting module index number for SSD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetStartSSD()const{return GetStartDet(kSSD);}
+ // Returns the ending module index number for SSD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetLastSSD()const{return GetLastDet(kSSD);}
+ // Returns the last module index number.
+ Int_t GetIndexMax() const {return fNmodules;}
+ //
+ // This function returns the rotation angles for a give module
+ // in the Double point array ang[3]. The angles are in radians
+ void GetAngles(Int_t index,Double_t *ang)const{
+ GetGeomMatrix(index)->GetAngles(ang);}
+ // This function returns the rotation angles for a give module
+ // in the three floating point variables provided. rx = frx,
+ // fy = fry, rz = frz. The angles are in radians
+ void GetAngles(Int_t index,Float_t &rx,Float_t &ry,Float_t &rz)const{
+ Double_t a[3];GetAngles(index,a);rx = a[0];ry = a[1];rz = a[2];}
+ // This function returns the rotation angles for a give detector on
+ // a give ladder in a give layer in the three floating point variables
+ // provided. rx = frx, fy = fry, rz = frz. The angles are in radians
+ void GetAngles(Int_t lay,Int_t lad,Int_t det,
+ Float_t &rx,Float_t &ry,Float_t &rz)const{
+ GetAngles(GetModuleIndex(lay,lad,det),rx,ry,rz);}
+ //
+ // This function returns the 6 GEANT rotation angles for a give
+ // module in the double point array ang[3]. The angles are in degrees
+ void GetGeantAngles(Int_t index,Double_t *ang)const{
+ GetGeomMatrix(index)->SixAnglesFromMatrix(ang);}
+ //
+ // This function returns the Cartesian translation for a give
+ // module in the Double array t[3]. The units are
+ // those of the Monte Carlo, generally cm.
+ void GetTrans(Int_t index,Double_t *t)const{
+ GetGeomMatrix(index)->GetTranslation(t);}
+ // This function returns the Cartesian translation for a give
+ // module index in the three floating point variables provided.
+ // x = fx0, y = fy0, z = fz0. The units are those of the Mont
+ // Carlo, generally cm.
+ void GetTrans(Int_t index,Float_t &x,Float_t &y,Float_t &z)const{
+ Double_t t[3];GetTrans(index,t);x = t[0];y = t[1];z = t[2];}
+ // This function returns the Cartesian translation for a give
+ // detector on a give ladder in a give layer in the three floating
+ // point variables provided. x = fx0, y = fy0, z = fz0. The units are
+ // those of the Monte Carlo, generally cm.
+ void GetTrans(Int_t lay,Int_t lad,Int_t det,
+ Float_t &x,Float_t &y,Float_t &z)const{
+ GetTrans(GetModuleIndex(lay,lad,det),x,y,z);}
+ //
+ // This function returns the Cartesian translation for a give
+ // module in the Double array t[3]. The units are
+ // those of the Monte Carlo, generally cm.
+ void GetTransCyln(Int_t index,Double_t *t)const{
+ GetGeomMatrix(index)->GetTranslationCylinderical(t);}
+ // This function returns the Cartesian translation for a give
+ // module index in the three floating point variables provided.
+ // x = fx0, y = fy0, z = fz0. The units are those of the Mont
+ // Carlo, generally cm.
+ void GetTransCyln(Int_t index,Float_t &x,Float_t &y,Float_t &z)const{
+ Double_t t[3];GetTransCyln(index,t);x = t[0];y = t[1];z = t[2];}
+ // This function returns the Cartesian translation for a give
+ // detector on a give ladder in a give layer in the three floating
+ // point variables provided. x = fx0, y = fy0, z = fz0. The units are
+ // those of the Monte Carlo, generally cm.
+ void GetTransCyln(Int_t lay,Int_t lad,Int_t det,
+ Float_t &x,Float_t &y,Float_t &z)const{
+ GetTransCyln(GetModuleIndex(lay,lad,det),x,y,z);}
+ //
+ // This function returns the Cartesian translation [cm] and the
+ // 6 GEANT rotation angles [degrees]for a given layer ladder and
+ // detector number, in the TVector x (at least 9 elements large).
+ // This function is required to be in-lined for speed.
+ void GetCenterThetaPhi(Int_t lay,Int_t lad,Int_t det,TVector &x)const{
+ Double_t t[3],a[6];Int_t i=GetModuleIndex(lay,lad,det);GetTrans(i,t);
+ GetGeantAngles(i,a);x(0)=t[0];x(1)=t[1];x(2)=t[2];x(3)=a[0];x(4)=a[1];
+ x(5)=a[2];x(6)=a[3];x(7)=a[4];x(8)=a[5];}
+ //
+ // This function returns the rotation matrix in Double
+ // precision for a given module.
+ void GetRotMatrix(Int_t index,Double_t mat[3][3])const{
+ GetGeomMatrix(index)->GetMatrix(mat);}
+ // This function returns the rotation matrix in a Double
+ // precision pointer for a given module. mat[i][j] => mat[3*i+j].
+ void GetRotMatrix(Int_t index,Double_t *mat)const{
+ Double_t rot[3][3];GetRotMatrix(index,rot);
+ for(Int_t i=0;i<3;i++)for(Int_t j=0;j<3;j++) mat[3*i+j] = rot[i][j];}
+ // This function returns the rotation matrix in a floating
+ // precision pointer for a given layer ladder and detector module.
+ // mat[i][j] => mat[3*i+j].
+ void GetRotMatrix(Int_t lay,Int_t lad,Int_t det,Float_t *mat)const{
+ GetRotMatrix(GetModuleIndex(lay,lad,det),mat);}
+ // This function returns the rotation matrix in a Double
+ // precision pointer for a given layer ladder and detector module.
+ // mat[i][j] => mat[3*i+j].
+ void GetRotMatrix(Int_t lay,Int_t lad,Int_t det,Double_t *mat)const{
+ GetRotMatrix(GetModuleIndex(lay,lad,det),mat);}
+ // This function returns the rotation matrix in a floating
+ // precision pointer for a given module. mat[i][j] => mat[3*i+j].
+ void GetRotMatrix(Int_t index,Float_t *mat)const{
+ Double_t rot[3][3];
+ GetGeomMatrix(index)->GetMatrix(rot);
+ for(Int_t i=0;i<3;i++)for(Int_t j=0;j<3;j++) mat[3*i+j] = rot[i][j];}
+ // This function sets the rotation matrix in a Double
+ // precision pointer for a given module. mat[i][j] => mat[3*i+j].
+ void SetRotMatrix(Int_t index,Double_t *mat){Double_t rot[3][3];
+ for(Int_t i=0;i<3;i++)for(Int_t j=0;j<3;j++) rot[i][j]=mat[3*i+j];
+ GetGeomMatrix(index)->SetMatrix(rot);}
+ // Return the normal for a specific module
+ void GetGlobalNormal(Int_t index,Double_t n[3]){
+ GetGeomMatrix(index)->GetGlobalNormal(n[0],n[1],n[2]);}
+ //
+ // Will define fShape if it isn't already defined.
+ void DefineShapes(Int_t size=5){fShape.Expand(size);}
+ // this function returns a pointer to the array of detector
+ // descriptions, Segmentation.
+ virtual TObjArray *GetShapeArray(){return &fShape;};
+ // this function returns a pointer to the class describing a particular
+ // detector type based on AliITSDetector value. This will return a pointer
+ // to one of the classes AliITSgeomSPD, AliITSgeomSDD, or
+ // AliITSgeomSSD, for example.
+ virtual TObject *GetShape(AliITSDetector idet){
+ return fShape.At((Int_t)idet);};
+ virtual TObject *GetShape(AliITSDetector idet)const{
+ return fShape.At((Int_t)idet);};
+ // This function returns a pointer to the class describing the
+ // detector for a particular module index. This will return a pointer
+ // to one of the classes AliITSgeomSPD, AliITSgeomSDD,
+ // or AliITSgeomSSD, for example.
+ virtual TObject *GetShape(Int_t index){
+ return fShape.At(GetGeomMatrix(index)->GetDetectorIndex());}
+ virtual TObject *GetShape(Int_t index)const{
+ return fShape.At(GetGeomMatrix(index)->GetDetectorIndex());}
+ // This function returns a pointer to the class describing the
+ // detector for a particular layer ladder and detector numbers. This
+ // will return a pointer to one of the classes AliITSgeomSPD,
+ // AliITSgeomSDD, or AliITSgeomSSD, for example.
+ virtual TObject *GetShape(Int_t lay,Int_t lad,Int_t det)
+ {return GetShape(GetModuleIndex(lay,lad,det));}
+ // Determine if a give point is inside of a detectors sensitive
+ // volume (as defined by these transformations).
+ virtual Bool_t IsInside(Int_t module,Double_t point[3])const;
+ //
+ // Setters
+ // Sets the rotation angles and matrix for a give module index
+ // via the double precision array a[3] [radians].
+ void SetByAngles(Int_t index,const Double_t a[]){
+ GetGeomMatrix(index)->SetAngles(a);}
+ // Sets the rotation angles and matrix for a give module index
+ // via the 3 floating precision variables rx, ry, and rz [radians].
+ void SetByAngles(Int_t index,Float_t rx, Float_t ry, Float_t rz) {
+ Double_t a[3];a[0] = rx;a[1] = ry;a[2] = rz;
+ GetGeomMatrix(index)->SetAngles(a);}
+ // Sets the rotation angles and matrix for a give layer, ladder,
+ // and detector numbers via the 3 floating precision variables rx,
+ // ry, and rz [radians].
void SetByAngles(Int_t lay,Int_t lad,Int_t det,
- Float_t rx,Float_t ry,Float_t rz);
- inline void SetTrans(Int_t lay,Int_t lad,Int_t det,
- Float_t x,Float_t y,Float_t z){
- fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].fx0 = x;
- fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].fy0 = y;
- fg[lay-1][fNdet[lay-1]*(lad-1)+det-1].fz0 = z;}
- void GetRotMatrix(Int_t lay,Int_t lad,Int_t det,Float_t *mat);
- void GtoL(Int_t lay,Int_t lad,Int_t det,const Float_t *g,Float_t *l);
- void GtoL(const Int_t *id,const Float_t *g,Float_t *l);
- void GtoL(const Int_t index,const Float_t *g,Float_t *l);
- void GtoLMomentum(Int_t lay,Int_t lad,Int_t det,const Float_t *g,Float_t *l);
- void LtoG(Int_t lay,Int_t lad,Int_t det,const Float_t *l,Float_t *g);
- void LtoG(const Int_t *id,const Float_t *l,Float_t *g);
- void LtoG(const Int_t index,const Float_t *l,Float_t *g);
- void LtoGMomentum(Int_t lay,Int_t lad,Int_t det,const Float_t *l,Float_t *g);
- Int_t GetModuleIndex(Int_t lay,Int_t lad,Int_t det);
- void GetModuleId(Int_t index,Int_t &lay,Int_t &lad,Int_t &det);
- void GlobalChange(Float_t *tran,Float_t *rot);
- void GlobalCylindericalChange(Float_t *tran,Float_t *rot);
- void RandomChange(Float_t *stran,Float_t *srot);
- void RandomCylindericalChange(Float_t *stran,Float_t *srot);
- void PrintComparison(FILE *fp,AliITSgeom *other);
- void PrintData(FILE *fp,Int_t lay,Int_t lad,Int_t det);
- ofstream &PrintGeom(ofstream &out);
- ifstream &ReadGeom(ifstream &in);
- virtual Int_t IsVersion() const {return 0;}
- inline void AddShape(TObject *shp){fShape->AddLast(shp);}
+ Float_t rx, Float_t ry, Float_t rz) {
+ SetByAngles(GetModuleIndex(lay,lad,det),rx,ry,rz);}
+ //
+ // Sets the rotation angles and matrix for a give module index
+ // via the Double precision array a[6] [degree]. The angles are those
+ // defined by GEANT 3.12.
+ void SetByGeantAngles(Int_t index,const Double_t *ang){
+ GetGeomMatrix(index)->MatrixFromSixAngles(ang);}
+ // Sets the rotation angles and matrix for a give layer, ladder
+ // and detector, in the array id[3] via the Double precision array
+ // a[6] [degree]. The angles are those defined by GEANT 3.12.
+ void SetByGeantAngles(const Int_t *id,const Double_t *ang){
+ SetByGeantAngles(GetModuleIndex(id),ang);}
+ // Sets the rotation angles and matrix for a give layer, ladder
+ // and detector, via the Double precision array a[6] [degree]. The
+ // angles are those defined by GEANT 3.12.
+ void SetByGeantAngles(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *ang){
+ SetByGeantAngles(GetModuleIndex(lay,lad,det),ang);}
+ //
+ // This function sets a new translation vector, given by the
+ // array x[3], for the Cartesian coordinate transformation
+ // for a give module index.
+ void SetTrans(Int_t index,Double_t x[]){
+ GetGeomMatrix(index)->SetTranslation(x);}
+ // This function sets a new translation vector, given by the three
+ // variables x, y, and z, for the Cartesian coordinate transformation
+ // for the detector defined by layer, ladder and detector.
+ void SetTrans(Int_t lay,Int_t lad,Int_t det,
+ Float_t x,Float_t y,Float_t z){Double_t t[3];
+ t[0] = x;t[1] = y;t[2] = z;
+ SetTrans(GetModuleIndex(lay,lad,det),t);}
+ //
+ // This function adds one more shape element to the TObjArray
+ // fShape. It is primarily used in the constructor functions of the
+ // AliITSgeom class. The pointer *shape can be the pointer to any
+ // class that is derived from TObject (this is true for nearly every
+ // ROOT class). This does not appear to be working properly at this time.
+ void AddShape(TObject *shp){fShape.AddLast(shp);}
+ // This function deletes an existing shape element, of type TObject,
+ // and replaces it with the one specified. This is primarily used to
+ // changes the parameters to the geom class for a particular
+ // type of detector.
+ void ReSetShape(Int_t dtype,TObject *shp){
+ delete (fShape.At(dtype));fShape.AddAt(shp,dtype);}
+ //
+ // transformations
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system for the detector
+ // defined by the layer, ladder, and detector numbers. The
+ // global and local coordinate are given in two floating point
+ // arrays g[3], and l[3].
+ void GtoL(Int_t lay,Int_t lad,Int_t det,
+ const Float_t *g,Float_t *l)const{
+ GtoL(GetModuleIndex(lay,lad,det),g,l);}
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system for the detector
+ // defined by the id[0], id[1], and id[2] numbers. The
+ // global and local coordinate are given in two floating point
+ // arrays g[3], and l[3].
+ void GtoL(const Int_t *id,const Float_t *g,Float_t *l)const{
+ GtoL(GetModuleIndex(id),g,l);}
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system for the detector
+ // module index number. The global and local coordinate are
+ // given in two floating point arrays g[3], and l[3].
+ void GtoL(Int_t index,const Float_t *g,Float_t *l)const{
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dg[i] = g[i];
+ GetGeomMatrix(index)->GtoLPosition(dg,dl);
+ for(i=0;i<3;i++) l[i] =dl[i];}
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system for the detector
+ // defined by the layer, ladder, and detector numbers. The
+ // global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void GtoL(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *g,Double_t *l)const{
+ GtoL(GetModuleIndex(lay,lad,det),g,l);}
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system for the detector
+ // defined by the id[0], id[1], and id[2] numbers. The
+ // global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void GtoL(const Int_t *id,const Double_t *g,Double_t *l)const{
+ GtoL(GetModuleIndex(id),g,l);}
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system for the detector
+ // module index number. The global and local coordinate are
+ // given in two Double point arrays g[3], and l[3].
+ void GtoL(Int_t index,const Double_t g[3],Double_t l[3])const{
+ GetGeomMatrix(index)->GtoLPosition(g,l);}
+ //
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system (used for ITS tracking)
+ // for the detector module index number. The global and local
+ // coordinate are given in two Double point arrays g[3], and l[3].
+ void GtoLtracking(Int_t index,const Double_t *g,Double_t *l)const{
+ if(IsGeantToTracking()) GtoL(index,g,l);
+ else GetGeomMatrix(index)->GtoLPositionTracking(g,l);}
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system (used for ITS tracking)
+ // for the detector id[3]. The global and local
+ // coordinate are given in two Double point arrays g[3], and l[3].
+ void GtoLtracking(const Int_t *id,const Double_t *g,Double_t *l)const{
+ GtoLtracking(GetModuleIndex(id),g,l);}
+ // Transforms from the ALICE Global coordinate system
+ // to the detector local coordinate system (used for ITS tracking)
+ // for the detector layer ladder and detector numbers. The global
+ // and local coordinate are given in two Double point arrays g[3],
+ // and l[3].
+ void GtoLtracking(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *g,Double_t *l)const{
+ GtoLtracking(GetModuleIndex(lay,lad,det),g,l);}
+ //
+ // Transforms of momentum types of quantities from the ALICE
+ // Global coordinate system to the detector local coordinate system
+ // for the detector layer ladder and detector numbers. The global
+ // and local coordinate are given in two float point arrays g[3],
+ // and l[3].
+ void GtoLMomentum(Int_t lay,Int_t lad,Int_t det,
+ const Float_t *g,Float_t *l)const{
+ GtoLMomentum(GetModuleIndex(lay,lad,det),g,l);}
+ // Transforms of momentum types of quantities from the ALICE
+ // Global coordinate system to the detector local coordinate system
+ // for the detector module index number. The global and local
+ // coordinate are given in two float point arrays g[3], and l[3].
+ void GtoLMomentum(Int_t index,const Float_t *g,Float_t *l)const{
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dg[i] = g[i];
+ GetGeomMatrix(index)->GtoLMomentum(dg,dl);
+ for(i=0;i<3;i++) l[i] =dl[i];}
+ // Transforms of momentum types of quantities from the ALICE
+ // Global coordinate system to the detector local coordinate system
+ // for the detector layer ladder and detector numbers. The global
+ // and local coordinate are given in two Double point arrays g[3],
+ // and l[3].
+ void GtoLMomentum(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *g,Double_t *l)const{
+ GtoLMomentum(GetModuleIndex(lay,lad,det),g,l);}
+ // Transforms of momentum types of quantities from the ALICE
+ // Global coordinate system to the detector local coordinate system
+ // for the detector module index number. The global and local
+ // coordinate are given in two Double point arrays g[3], and l[3].
+ void GtoLMomentum(Int_t index,const Double_t *g,Double_t *l)const{
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dg[i] = g[i];
+ GetGeomMatrix(index)->GtoLMomentum(dg,dl);
+ for(i=0;i<3;i++) l[i] =dl[i];}
+ //
+ // Transforms of momentum types of quantities from the ALICE
+ // Global coordinate system to the detector local coordinate system
+ // (used for ITS tracking) for the detector module index number.
+ // The global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void GtoLMomentumTracking(Int_t index,const Double_t *g,Double_t *l)const{
+ if(IsGeantToTracking()) GtoLMomentum(index,g,l);
+ else GetGeomMatrix(index)->GtoLMomentumTracking(g,l);}
+ // Transforms of momentum types of quantities from the ALICE
+ // Global coordinate system to the detector local coordinate system
+ // (used for ITS tracking) for the detector id[3].
+ // The global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void GtoLMomentumTracking(const Int_t *id,
+ const Double_t *g,Double_t *l)const{
+ GtoLMomentumTracking(GetModuleIndex(id),g,l);}
+ // Transforms of momentum types of quantities from the ALICE
+ // Global coordinate system to the detector local coordinate system
+ // (used for ITS tracking) for the detector layer ladder and detector
+ // numbers. The global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void GtoLMomentumTracking(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *g,Double_t *l)const{
+ GtoLMomentumTracking(GetModuleIndex(lay,lad,det),g,l);}
+ //
+ // Transforms from the detector local coordinate system
+ // to the ALICE Global coordinate system for the detector
+ // defined by the layer, ladder, and detector numbers. The
+ // global and local coordinate are given in two floating point
+ // arrays g[3], and l[3].
+ void LtoG(Int_t lay,Int_t lad,Int_t det,
+ const Float_t *l,Float_t *g)const{
+ LtoG(GetModuleIndex(lay,lad,det),l,g);}
+ // Transforms from the detector local coordinate system
+ // to the ALICE Global coordinate system for the detector
+ // defined by the id[0], id[1], and id[2] numbers. The
+ // global and local coordinate are given in two floating point
+ // arrays g[3], and l[3].
+ void LtoG(const Int_t *id,const Float_t *l,Float_t *g)const{
+ LtoG(GetModuleIndex(id),l,g);}
+ // Transforms from the detector local coordinate system
+ // to the ALICE Global coordinate system for the detector
+ // module index number. The global and local coordinate are
+ // given in two floating point arrays g[3], and l[3].
+ void LtoG(Int_t index,const Float_t *l,Float_t *g)const{
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dl[i] = l[i];
+ GetGeomMatrix(index)->LtoGPosition(dl,dg);
+ for(i=0;i<3;i++) g[i] =dg[i];}
+ // Transforms from the detector local coordinate system
+ // to the ALICE Global coordinate system for the detector
+ // defined by the layer, ladder, and detector numbers. The
+ // global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void LtoG(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *l,Double_t *g)const{
+ LtoG(GetModuleIndex(lay,lad,det),l,g);}
+ // Transforms from the detector local coordinate system
+ // to the ALICE Global coordinate system for the detector
+ // defined by the id[0], id[1], and id[2] numbers. The
+ // global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void LtoG(const Int_t *id,const Double_t *l,Double_t *g)const{
+ LtoG(GetModuleIndex(id),l,g);}
+ // Transforms from the detector local coordinate system
+ // to the ALICE Global coordinate system for the detector
+ // module index number. The global and local coordinate are
+ // given in two Double point arrays g[3], and l[3].
+ void LtoG(Int_t index,const Double_t *l,Double_t *g)const{
+ GetGeomMatrix(index)->LtoGPosition(l,g);}
+ //
+ // Transforms from the detector local coordinate system (used
+ // for ITS tracking) to the ALICE Global coordinate system
+ // for the detector module index number. The global and local
+ // coordinate are given in two Double point arrays g[3], and l[3].
+ void LtoGtracking(Int_t index,const Double_t *l,Double_t *g)const{
+ if(IsGeantToTracking()) LtoG(index,l,g);
+ else GetGeomMatrix(index)->LtoGPositionTracking(l,g);}
+ // Transforms from the detector local coordinate system (used
+ // for ITS tracking) to the ALICE Global coordinate system
+ // for the detector id[3]. The global and local
+ // coordinate are given in two Double point arrays g[3], and l[3].
+ void LtoGtracking(const Int_t *id,const Double_t *l,Double_t *g)const{
+ LtoGtracking(GetModuleIndex(id),l,g);}
+ // Transforms from the detector local coordinate system (used
+ // for ITS tracking) to the detector local coordinate system
+ // for the detector layer ladder and detector numbers. The global
+ // and local coordinate are given in two Double point arrays g[3],
+ // and l[3].
+ void LtoGtracking(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *l,Double_t *g)const{
+ LtoGtracking(GetModuleIndex(lay,lad,det),l,g);}
+ //
+ // Transforms of momentum types of quantities from the detector
+ // local coordinate system to the ALICE Global coordinate system
+ // for the detector layer ladder and detector numbers. The global
+ // and local coordinate are given in two float point arrays g[3],
+ // and l[3].
+ void LtoGMomentum(Int_t lay,Int_t lad,Int_t det,
+ const Float_t *l,Float_t *g)const{
+ LtoGMomentum(GetModuleIndex(lay,lad,det),l,g);}
+ // Transforms of momentum types of quantities from the detector
+ // local coordinate system to the ALICE Global coordinate system
+ // for the detector module index number. The global and local
+ // coordinate are given in two float point arrays g[3], and l[3].
+ void LtoGMomentum(Int_t index,const Float_t *l,Float_t *g)const{
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dl[i] = l[i];
+ GetGeomMatrix(index)->LtoGMomentum(dl,dg);
+ for(i=0;i<3;i++) g[i] =dg[i];}
+ // Transforms of momentum types of quantities from the detector
+ // local coordinate system to the ALICE Global coordinate system
+ // for the detector layer ladder and detector numbers. The global
+ // and local coordinate are given in two Double point arrays g[3],
+ // and l[3].
+ void LtoGMomentum(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *l,Double_t *g)const{
+ LtoGMomentum(GetModuleIndex(lay,lad,det),l,g);}
+ // Transforms of momentum types of quantities from the detector
+ // local coordinate system to the ALICE Global coordinate system
+ // for the detector module index number. The global and local
+ // coordinate are given in two Double point arrays g[3], and l[3].
+ void LtoGMomentum(Int_t index,const Double_t *l,Double_t *g)const{
+ GetGeomMatrix(index)->LtoGMomentum(l,g);}
+ //
+ // Transforms of momentum types of quantities from the detector
+ // local coordinate system (used for ITS tracking) to the detector
+ // system ALICE Global for the detector module index number.
+ // The global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void LtoGMomentumTracking(Int_t index,const Double_t *l,Double_t *g)const{
+ if(IsGeantToTracking()) LtoGMomentum(index,l,g);
+ else GetGeomMatrix(index)->LtoGMomentumTracking(l,g);}
+ // Transforms of momentum types of quantities from the detector
+ // local coordinate system (used for ITS tracking) to the ALICE
+ // Global coordinate system for the detector id[3].
+ // The global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void LtoGMomentumTracking(const Int_t *id,const Double_t *l,Double_t *g)
+ const{LtoGMomentumTracking(GetModuleIndex(id),l,g);}
+ // Transforms of momentum types of quantities from the detector
+ // local coordinate system (used for ITS tracking) to the ALICE
+ // Global coordinate system for the detector layer ladder and detector
+ // numbers. The global and local coordinate are given in two Double point
+ // arrays g[3], and l[3].
+ void LtoGMomentumTracking(Int_t lay,Int_t lad,Int_t det,
+ const Double_t *l,Double_t *g)const{
+ LtoGMomentumTracking(GetModuleIndex(lay,lad,det),l,g);}
+ //
+ // Transforms from one detector local coordinate system
+ // to another detector local coordinate system for the detector
+ // module index1 number to the detector module index2 number. The
+ // local coordinates are given in two Double point arrays l1[3],
+ // and l2[3].
+ void LtoL(Int_t index1,Int_t index2,Double_t *l1,Double_t *l2)const{
+ Double_t g[3]; LtoG(index1,l1,g);GtoL(index2,g,l2);}
+ // Transforms from one detector local coordinate system
+ // to another detector local coordinate system for the detector
+ // id1[3] to the detector id2[3]. The local coordinates are given
+ // in two Double point arrays l1[3], and l2[3].
+ void LtoL(const Int_t *id1,const Int_t *id2,Double_t *l1,Double_t *l2)
+ const{LtoL(GetModuleIndex(id1[0],id1[1],id1[2]),
+ GetModuleIndex(id2[0],id2[1],id2[2]),l1,l2);}
+ //
+ // Transforms from one detector local coordinate system (used for
+ // ITS tracking) to another detector local coordinate system (used
+ // for ITS tracking) for the detector module index1 number to the
+ // detector module index2 number. The local coordinates are given
+ // in two Double point arrays l1[3], and l2[3].
+ void LtoLtracking(Int_t index1,Int_t index2,
+ Double_t *l1,Double_t *l2)const{
+ Double_t g[3]; LtoGtracking(index1,l1,g);GtoLtracking(index2,g,l2);}
+ // Transforms from one detector local coordinate system (used for
+ // ITS tracking) to another detector local coordinate system (used
+ // for ITS tracking) for the detector id1[3] to the detector id2[3].
+ // The local coordinates are given in two Double point arrays l1[3],
+ // and l2[3].
+ void LtoLtracking(const Int_t *id1,const Int_t *id2,
+ Double_t *l1,Double_t *l2)const{
+ LtoLtracking(GetModuleIndex(id1[0],id1[1],id1[2]),
+ GetModuleIndex(id2[0],id2[1],id2[2]),l1,l2);}
+ //
+ // Transforms of momentum types of quantities from one detector
+ // local coordinate system to another detector local coordinate
+ // system for the detector module index1 number to the detector
+ // module index2 number. The local coordinates are given in two
+ // Double point arrays l1[3], and l2[3].
+ void LtoLMomentum(Int_t index1,Int_t index2,
+ const Double_t *l1,Double_t *l2)const{
+ Double_t g[3]; LtoGMomentum(index1,l1,g);GtoLMomentum(index2,g,l2);}
+ // Transforms of momentum types of quantities from one detector
+ // local coordinate system to another detector local coordinate
+ // system for the detector id1[3] to the detector id2[3]. The local
+ // coordinates are given in two Double point arrays l1[3], and l2[3].
+ void LtoLMomentum(const Int_t *id1,const Int_t *id2,
+ const Double_t *l1,Double_t *l2)const{
+ LtoLMomentum(GetModuleIndex(id1[0],id1[1],id1[2]),
+ GetModuleIndex(id2[0],id2[1],id2[2]),l1,l2);}
+ //
+ // Transforms of momentum types of quantities from one detector
+ // local coordinate system (used by ITS tracking) to another detector
+ // local coordinate system (used by ITS tracking) for the detector
+ // module index1 number to the detector module index2 number. The
+ // local coordinates are given in two Double point arrays l1[3],
+ // and l2[3].
+ void LtoLMomentumTracking(Int_t index1,Int_t index2,
+ Double_t *l1,Double_t *l2)const{
+ Double_t g[3]; LtoGMomentumTracking(index1,l1,g);
+ GtoLMomentumTracking(index2,g,l2);}
+ // Transforms of momentum types of quantities from one detector
+ // local coordinate system (used by ITS tracking) to another detector
+ // local coordinate system (used by ITS tracking) for the detector
+ // id1[3] to the detector id2[3]. The local coordinates are given in
+ // two Double point arrays l1[3], and l2[3].
+ void LtoLMomentumTracking(const Int_t *id1,const Int_t *id2,
+ Double_t *l1,Double_t *l2)const{
+ LtoLMomentumTracking(GetModuleIndex(id1[0],id1[1],id1[2]),
+ GetModuleIndex(id2[0],id2[1],id2[2]),l1,l2);}
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // the ALICE Global coordinate system to a detector local coordinate
+ // system. The specific detector is determined by the module index
+ // number.
+ void GtoLErrorMatrix(Int_t index,const Double_t **g,Double_t **l)const{
+ GetGeomMatrix(index)->GtoLPositionError(
+ (Double_t (*)[3])g,(Double_t (*)[3])l);}
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // the ALICE Global coordinate system to a detector local coordinate
+ // system (used by ITS tracking). The specific detector is determined
+ // by the module index number.
+ void GtoLErrorMatrixTracking(Int_t index,const Double_t **g,
+ Double_t **l)const{
+ if(IsGeantToTracking()) GetGeomMatrix(index)->GtoLPositionError((
+ Double_t (*)[3])g,(Double_t (*)[3])l);
+ else GetGeomMatrix(index)->GtoLPositionErrorTracking(
+ (Double_t (*)[3])g,(Double_t (*)[3])l);}
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // the detector local coordinate system to a ALICE Global coordinate
+ // system. The specific detector is determined by the module index
+ // number.
+ void LtoGErrorMatrix(Int_t index,const Double_t **l,Double_t **g)const{
+ GetGeomMatrix(index)->LtoGPositionError(
+ (Double_t (*)[3])l,(Double_t (*)[3])g);}
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // the detector local coordinate system to a ALICE Global coordinate
+ // system. The specific detector is determined by the module index
+ // number.
+ void LtoGErrorMatrix(Int_t index,const Double_t l[3][3],Double_t g[3][3])
+ const{
+ GetGeomMatrix(index)->LtoGPositionError(
+ (Double_t (*)[3])l,(Double_t (*)[3])g);}
+
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // the detector local coordinate system (used by ITS tracking) to a
+ // ALICE Global coordinate system. The specific detector is determined
+ // by the module index number.
+ void LtoGErrorMatrixTracking(Int_t index,const Double_t **l,
+ Double_t **g)const{
+ if(IsGeantToTracking()) GetGeomMatrix(index)->LtoGPositionError(
+ (Double_t (*)[3])g,(Double_t (*)[3])l);
+ else GetGeomMatrix(index)->LtoGPositionErrorTracking(
+ (Double_t (*)[3])l,(Double_t (*)[3])g);}
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // the detector local coordinate system (used by ITS tracking) to a
+ // ALICE Global coordinate system. The specific detector is determined
+ // by the module index number.
+ void LtoGErrorMatrixTracking(Int_t index,const Double_t l[3][3],
+ Double_t g[3][3])const{
+ if(IsGeantToTracking()) GetGeomMatrix(index)->LtoGPositionError(
+ (Double_t (*)[3])g,(Double_t (*)[3])l);
+ else GetGeomMatrix(index)->LtoGPositionErrorTracking(
+ (Double_t (*)[3])l,(Double_t (*)[3])g);}
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // one detector local coordinate system to another detector local
+ // coordinate system. The specific detector is determined by the
+ // two module index number index1 and index2.
+ void LtoLErrorMatrix(Int_t index1,Int_t index2,
+ const Double_t **l1,Double_t **l2)const{
+ Double_t g[3][3];
+ LtoGErrorMatrix(index1,l1,(Double_t **)g);
+ GtoLErrorMatrix(index2,(const Double_t **)g,l2);}
+ //
+ // Transforms a matrix, like an Uncertainty or Error matrix from
+ // one detector local coordinate system (used by ITS tracking) to
+ // another detector local coordinate system (used by ITS tracking).
+ // The specific detector is determined by the two module index number
+ // index1 and index2.
+ void LtoLErrorMatrixTraking(Int_t index1,Int_t index2,
+ const Double_t **l1,Double_t **l2)const{
+ Double_t g[3][3];
+ LtoGErrorMatrixTracking(index1,l1,(Double_t **)g);
+ GtoLErrorMatrixTracking(index2,(const Double_t **)g,l2);}
+ // Find Specific Modules
+ // Locate the nearest module to the point g, in ALICE global Cartesian
+ // coordinates [cm] in a give layer. If layer = 0 then it search in
+ // all layers.
+ Int_t GetNearest(const Double_t g[3],Int_t lay=0)const;
+ // Locates the nearest 27 modules, in nearest order, to the point g, in
+ // ALICE global Cartesian coordinates [cm] in a give layer. If layer = 0
+ // then it searches in all layers. (there are 27 elements in a 3x3x3
+ // cube.
+ void GetNearest27(const Double_t g[3],Int_t n[27],Int_t lay=0)const;
+ // Returns the distance [cm] between the point g[3] and the center of
+ // the detector/module specified by the the module index number.
+ Double_t Distance(Int_t index,const Double_t g[3])const{
+ return TMath::Sqrt(GetGeomMatrix(index)->Distance2(g));}
+ // loops over modules and computes the average cylindrical
+ // radius to a given layer and the range.
+ Double_t GetAverageRadiusOfLayer(Int_t layer,Double_t &range)const;
+ // Geometry manipulation
+ // This function performs a Cartesian translation and rotation of
+ // the full ITS from its default position by an amount determined by
+ // the three element arrays tran and rot.
+ void GlobalChange(const Float_t *tran,const Float_t *rot);
+ // This function performs a Cylindrical translation and rotation of
+ // the full ITS from its default position by an amount determined by
+ // the three element arrays tran and rot.
+ void GlobalCylindericalChange(const Float_t *tran,const Float_t *rot);
+ // This function performs a Gaussian random displacement and/or
+ // rotation about the present global position of each active
+ // volume/detector of the ITS with variances given by stran and srot.
+ void RandomChange(const Float_t *stran,const Float_t *srot);
+ // This function performs a Gaussian random displacement and/or
+ // rotation about the present global position of each active
+ // volume/detector of the ITS with variances given by stran and srot.
+ // But in Cylindrical coordinates.
+ void RandomCylindericalChange(const Float_t *stran,const Float_t *srot);
+ // This function converts these transformations from Alice global and
+ // local to Tracking global and local.
+ //
+ // This converts the geometry
+ void GeantToTracking(const AliITSgeom &source);
+ // Other routines.
+ // This routine prints, to a file, the difference between this class
+ // and "other".
+ void PrintComparison(FILE *fp,AliITSgeom *other)const;
+ // This routine prints, to a file, the contents of this class.
+ void PrintData(FILE *fp,Int_t lay,Int_t lad,Int_t det)const;
+ // This function prints out this class in a single stream. This steam
+ // can be read by ReadGeom.
+ void PrintGeom(ostream *out)const;
+ // This function reads in that single steam printed out by PrintGeom.
+ void ReadGeom(istream *in);
+
+ //Conversion from det. local coordinates to local ("V2") coordinates
+ //used for tracking
+
+ void DetLToTrackingV2(Int_t md,Float_t xin,Float_t zin,
+ Float_t &yout, Float_t &zout);
+
+ void TrackingV2ToDetL(Int_t md,Float_t yin,Float_t zin,
+ Float_t &xout,Float_t &zout);
+
+ private:
+ TString fVersion; // Transformation version.
+ Int_t fTrans; // Flag to keep track of which transformation
+ Int_t fNmodules;// The total number of modules
+ Int_t fNlayers; // The number of layers.
+ TArrayI fNlad; // Array of the number of ladders/layer(layer)
+ TArrayI fNdet; // Array of the number of detector/ladder(layer)
+ TObjArray fGm; // Structure of translation. and rotation.
+ TObjArray fShape; // Array of shapes and detector information.
- ClassDef(AliITSgeom,1)
-};
+ ClassDef(AliITSgeom,3) // ITS geometry class
+};
+// Input and output function for standard C++ input/output.
+ostream& operator<<(ostream &os,AliITSgeom &source);
+istream& operator>>(istream &os,AliITSgeom &source);
#endif
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