// the information needed to do the coordinate transformation are kept in
// a specialized structure for ease of implementation.
/////////////////////////////////////////////////////////////////////////
-#include <fstream.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"
+#include "AliLog.h"
-#include "AliITSgeomSPD.h"
-#include "AliITSgeomSDD.h"
-#include "AliITSgeomSSD.h"
-
-
-struct AliITSgeomS {
- 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
- Float_t angles[6]; // module center, theta and phi
- Double_t rottrack[3][3]; // the tracking rotation matrix
-};
+typedef enum {kND=-1,kSPD=0, kSDD=1, kSSD=2, kSSDp=3,kSDDp=4, kUPG=5} AliITSDetector;
//_______________________________________________________________________
class AliITSgeom : public TObject {
public:
- AliITSgeom(); // Default constructor
- AliITSgeom(const char *filename); // Constructor
+ AliITSgeom(); // Default constructor
+ 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
- // void operator=(const AliITSgeom &source);// = operator
AliITSgeom& operator=(const AliITSgeom &source);// = operator
-
- virtual ~AliITSgeom(); // Default destructor
-
- Int_t GetNdetectors(Int_t layer) const {return fNdet[layer-1];}// return number of detector a ladder has
- Int_t GetNladders(Int_t layer) const {return fNlad[layer-1];}// return number of laders a layer has
- Int_t GetNlayers() const {return fNlayers;} // return number of layer the ITS has
- void GetAngles(Int_t lay,Int_t lad,Int_t det,
- Float_t &rx,Float_t &ry,Float_t &rz)const {
- rx = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].frx;
- ry = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fry;
- rz = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].frz;} // Get agnles of roations for a give module
- void GetTrans(Int_t lay,Int_t lad,Int_t det,
- Float_t &x,Float_t &y,Float_t &z)const {
- x = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fx0;
- y = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fy0;
- z = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fz0;} // get translation for a given module
+ virtual ~AliITSgeom(); // Default destructor
+ // 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]);
+ // 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);}
+ //
+ // 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,const 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]);}
+ //
+ //
+ // 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);
- void SetByAngles(Int_t index,Double_t angl[]);
+ 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){
- fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fx0 = x;
- fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fy0 = y;
- fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fz0 = z;}// Set translation vector for a give module
- void SetTrans(Int_t index,Double_t x[]);
- void GetRotMatrix(Int_t lay,Int_t lad,Int_t det,Float_t *mat);
- void GetRotMatrix(Int_t lay,Int_t lad,Int_t det,Double_t *mat);
- void GetRotMatrix(Int_t index,Float_t *mat);
- void GetRotMatrix(Int_t index,Double_t *mat);
- Int_t GetStartDet(Int_t dtype );
- Int_t GetLastDet(Int_t dtype);
- Int_t GetStartSPD() {return GetModuleIndex(1,1,1);} // return starting index for SPD
- Int_t GetLastSPD() {return GetModuleIndex(2,fNlad[1],fNdet[1]);}// return Ending index for SPD
- Int_t GetStartSDD() {return GetModuleIndex(3,1,1);} // return starting index for SDD
- Int_t GetLastSDD() {return GetModuleIndex(4,fNlad[3],fNdet[3]);}// return Ending index for SDD
- Int_t GetStartSSD() {return GetModuleIndex(5,1,1);} // return starting index for SSD
- Int_t GetLastSSD() {return GetModuleIndex(6,fNlad[5],fNdet[5]);}// return Ending index for SSD
- Int_t GetIndexMax() {return GetModuleIndex(fNlayers,fNlad[fNlayers-1],
- fNdet[fNlayers-1])+1;}// return Ending index for all ITS
- 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 GtoL(Int_t lay,Int_t lad,Int_t det,const Double_t *g,Double_t *l);
- void GtoL(const Int_t *id,const Double_t *g,Double_t *l);
- void GtoL(const Int_t index,const Double_t *g,Double_t *l);
- void GtoLMomentum(Int_t lay,Int_t lad,Int_t det,
- const Float_t *g,Float_t *l);
- void GtoLMomentum(Int_t lay,Int_t lad,Int_t det,
- const Double_t *g,Double_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 LtoG(Int_t lay,Int_t lad,Int_t det,const Double_t *l,Double_t *g);
- void LtoG(const Int_t *id,const Double_t *l,Double_t *g);
- void LtoG(const Int_t index,const Double_t *l,Double_t *g);
- void LtoGMomentum(Int_t lay,Int_t lad,Int_t det,
- const Float_t *l,Float_t *g);
- void LtoGMomentum(Int_t lay,Int_t lad,Int_t det,
- const Double_t *l,Double_t *g);
- void LtoL(const Int_t *id1,const Int_t *id2,Double_t *l1,Double_t *l2);
- void LtoL(const Int_t index1,const Int_t index2,Double_t *l1,Double_t *l2);
- void LtoLMomentum(const Int_t *id1,const Int_t *id2,
- const Double_t *l1,Double_t *l2);
- void GtoLErrorMatrix(const Int_t index,Double_t **g,Double_t **l);
- void LtoGErrorMatrix(const Int_t index,Double_t **l,Double_t **g);
- void LtoLErrorMatrix(const Int_t index1,const Int_t index2,
- Double_t **l1,Double_t **l2);
- 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 1;} // return version number
- void AddShape(TObject *shp){fShape->AddLast(shp);} // Add Shapes
- virtual TObject *GetShape(Int_t lay,Int_t lad,Int_t det)
- const {return fShape->At(fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].
- fShapeIndex);} // return specific TShape
-
- TObjArray *Shape() {return fShape;} // return Shapes array
+ 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);}
+ //
+ // 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);}
+
+ // 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));}
+ // 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.
+ // (Coverity warnings) void PrintGeom(ostream *out)const;
- void GeantToTracking(AliITSgeom &source); // This converts the geometry
- // transformations from that used by the ITS and it's Monte Carlo to that
- // used by the track finding code.
- // Usage:
- // AliITSgeom *gm,*gt;
- // gm = ((AliITS *) ITS)->GetITSgeom();
- // gt->GeantToTracking(*gm);
- // This allocates and fills gt with the geometry transforms between the
- // global coordinate system to the local coordinate system used to do
- // tracking.
+ //Conversion from det. local coordinates to local ("V2") coordinates
+ //used for tracking
- void GtoLtracking(Int_t lay,Int_t lad,Int_t det,const Double_t *g,Double_t *l);
- void LtoGtracking(Int_t lay,Int_t lad,Int_t det,const Double_t *l,Double_t *g);
- void GetCenterThetaPhi(Int_t lay,Int_t lad,Int_t det, TVector &x) const {
- x(0) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fx0;
- x(1) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fy0;
- x(2) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].fz0;
- x(3) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].angles[0];
- x(4) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].angles[1];
- x(5) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].angles[2];
- x(6) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].angles[3];
- x(7) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].angles[4];
- x(8) = fGm[lay-1][fNdet[lay-1]*(lad-1)+det-1].angles[5];
+ void DetLToTrackingV2(Int_t md,Float_t xin,Float_t zin,
+ Float_t &yout, Float_t &zout) const ;
-}
+ void TrackingV2ToDetL(Int_t md,Float_t yin,Float_t zin,
+ Float_t &xout,Float_t &zout) const ;
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)
- AliITSgeomS **fGm; // Structure of translation and rotation.
- TObjArray *fShape; // Array of shapes and detector information.
-
- ClassDef(AliITSgeom,1) // ITS geometry class
-};
+ 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.
+
+ ClassDef(AliITSgeom,4) // ITS geometry class
+};
+// Input and output function for standard C++ input/output.
#endif
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