// a specialized structure for ease of implementation.
/////////////////////////////////////////////////////////////////////////
#include <fstream.h>
-#include "TObjArray.h"
-//#include "AliITSgeomSPD.h"
-//#include "AliITSgeomSDD.h"
-//#include "AliITSgeomSSD.h"
+#include <TObjArray.h>
+#include <TVector.h>
+#include "AliITSgeomSPD.h"
+#include "AliITSgeomSDD.h"
+#include "AliITSgeomSSD.h"
+#include "AliITSgeomMatrix.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
-};
+typedef enum {kSPD=0, kSDD=1, kSSD=2} AliITSDetector;
//_______________________________________________________________________
class AliITSgeom : public TObject {
public:
- AliITSgeom(); // Default constructor
- AliITSgeom(const char *filename); // 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
- 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[]);
- 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);
+ AliITSgeom(); // Default constructor
+ AliITSgeom(const char *filename); // Constructor
+ void ReadNewFile(const char *filename); // Constructor for new format.
+ AliITSgeom(AliITSgeom &source); // Copy constructor
+ void operator=(AliITSgeom &source);// = operator
+ virtual ~AliITSgeom(); // Default destructor
+// Getters
+ Int_t GetTransformationType() const {return fTrans;}
+//
+ Bool_t IsGeantToGeant() const {return (fTrans == 0);}
+ Bool_t IsGeantToTracking() const {return ((fTrans&&0xfffe)!= 0);}
+ Bool_t IsGeantToDisplaced() const {return ((fTrans&&0xfffd)!= 0);}
+//
+ // This function returns the number of detectors/ladder for a give
+ // layer. In particular it returns fNdet[layer-1].
+ Int_t GetNdetectors(const 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(const 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(const Int_t lay,const Int_t lad,const Int_t det);
+ // 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){
+ return GetModuleIndex(id[0],id[1],id[2]);}
+ void GetModuleId(const Int_t index,Int_t &lay,Int_t &lad,Int_t &det);
+//
+ Int_t GetStartDet(const Int_t dtype );
+ Int_t GetLastDet(const Int_t dtype);
+ // Returns the starting module index number for SPD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetStartSPD() {return GetModuleIndex(1,1,1);}
+ // Returns the ending module index number for SPD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetLastSPD() {return GetModuleIndex(2,fNlad[1],fNdet[1]);}
+ // Returns the starting module index number for SDD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetStartSDD() {return GetModuleIndex(3,1,1);}
+ // Returns the ending module index number for SDD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetLastSDD() {return GetModuleIndex(4,fNlad[3],fNdet[3]);}
+ // Returns the starting module index number for SSD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetStartSSD() {return GetModuleIndex(5,1,1);}
+ // Returns the ending module index number for SSD detector,
+ // assuming the modules are placed in the "standard" cylindrical
+ // ITS structure.
+ Int_t GetLastSSD() {return GetModuleIndex(6,fNlad[5],fNdet[5]);}
+ // Returns the last module index number.
+ Int_t GetIndexMax() {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(const Int_t index,Double_t *ang) {
+ fGm[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(const Int_t index,Float_t &rx,Float_t &ry,Float_t &rz) {
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ Float_t &rx,Float_t &ry,Float_t &rz) {
+ 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(const Int_t index,Double_t *ang){
+ fGm[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(const Int_t index,Double_t *t) {
+ fGm[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(const Int_t index,Float_t &x,Float_t &y,Float_t &z) {
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ Float_t &x,Float_t &y,Float_t &z) {
+ GetTrans(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).
+ void GetCenterThetaPhi(const Int_t lay,const Int_t lad,const Int_t det,
+ TVector &x){Double_t t[3],ang[6];
+ Int_t index=GetModuleIndex(lay,lad,det);
+ GetTrans(index,t);GetGeantAngles(index,ang);
+ x(0) = t[0];x(1) = t[1];x(2) = t[2];
+ x(3) = ang[0];x(4) = ang[1];x(5) = ang[2];
+ x(6) = ang[3];x(7) = ang[4];x(8) = ang[5];}
+//
+ // This function returns the rotation matrix in Double
+ // precision for a given module.
+ void GetRotMatrix(const Int_t index,Double_t mat[3][3]){
+ fGm[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(const Int_t index,Double_t *mat){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ Float_t *mat){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(const Int_t lay,const Int_t lad,const Int_t det,
+ Double_t *mat){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(const Int_t index,Float_t *mat){
+ Double_t rot[3][3];fGm[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 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(const Int_t index)
+ {return fShape->At(fGm[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(const Int_t lay,const Int_t lad,const Int_t det)
+ {return GetShape(GetModuleIndex(lay,lad,det));}
+//
+ // This function returns a pointer to the particular AliITSgeomMatrix
+ // class for a specific module index.
+ AliITSgeomMatrix *GetGeomMatrix(Int_t index){return fGm[index];}
+//
+// Setters
+ // Sets the rotation angles and matrix for a give module index
+ // via the double precision array a[3] [radians].
+ void SetByAngles(const Int_t index,const Double_t a[]){
+ fGm[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(const Int_t index,
+ const Float_t rx,const Float_t ry,const Float_t rz) {
+ Double_t a[3];a[0] = rx;a[1] = ry;a[2] = rz;
+ fGm[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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Float_t rx,const Float_t ry,const 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(const Int_t index,const Double_t *ang){
+ fGm[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(const Int_t lay,const Int_t lad,const 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(const Int_t index,Double_t x[]){
+ fGm[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(const Int_t lay,const Int_t lad,const 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 segmentation class for a particular
+ // type of detector.
+ void ReSetShape(const Int_t dtype,TObject *shp){
+ fShape->RemoveAt(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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Float_t *g,Float_t *l){
+ 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){
+ 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(const Int_t index,const Float_t *g,Float_t *l){
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dg[i] = g[i];
+ fGm[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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *g,Double_t *l){
+ 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){
+ 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(const Int_t index,const Double_t *g,Double_t *l){
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dg[i] = g[i];
+ fGm[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 (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(const Int_t index,const Double_t *g,Double_t *l){
+ if(IsGeantToTracking()) GtoL(index,g,l);
+ else fGm[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){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *g,Double_t *l){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Float_t *g,Float_t *l){
+ 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(const Int_t index,const Float_t *g,Float_t *l){
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dg[i] = g[i];
+ fGm[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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *g,Double_t *l){
+ 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(const Int_t index,const Double_t *g,Double_t *l){
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dg[i] = g[i];
+ fGm[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(const Int_t index,const Double_t *g,Double_t *l){
+ if(IsGeantToTracking()) GtoLMomentum(index,g,l);
+ else fGm[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){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *g,Double_t *l){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Float_t *l,Float_t *g){
+ 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){
+ 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(const Int_t index,const Float_t *l,Float_t *g){
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dl[i] = l[i];
+ fGm[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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *l,Double_t *g){
+ 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){
+ 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(const Int_t index,const Double_t *l,Double_t *g){
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dl[i] = l[i];
+ fGm[index]->LtoGPosition(dl,dg);
+ for(i=0;i<3;i++) g[i] =dg[i];}
+//
+ // 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(const Int_t index,const Double_t *l,Double_t *g){
+ if(IsGeantToTracking()) LtoG(index,l,g);
+ else fGm[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){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *l,Double_t *g){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Float_t *l,Float_t *g){
+ 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(const Int_t index,const Float_t *l,Float_t *g){
+ Double_t dg[3],dl[3];Int_t i;for(i=0;i<3;i++) dl[i] = l[i];
+ fGm[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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *l,Double_t *g){
+ 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(const Int_t index,const Double_t *l,Double_t *g){
+ fGm[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(const Int_t index,const Double_t *l,Double_t *g){
+ if(IsGeantToTracking()) LtoGMomentum(index,l,g);
+ else fGm[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){
+ 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(const Int_t lay,const Int_t lad,const Int_t det,
+ const Double_t *l,Double_t *g){
+ 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(const Int_t index1,const Int_t index2,Double_t *l1,Double_t *l2){
+ 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){
+ 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(const Int_t index1,const Int_t index2,
+ Double_t *l1,Double_t *l2){
+ 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){
+ 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(const Int_t index1,const Int_t index2,
+ const Double_t *l1,Double_t *l2){
+ 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);
- void GtoLErrorMatrix(const Int_t index,Double_t **g,Double_t **l);
- void LtoGErrorMatrix(const Int_t index,Double_t **l,Double_t **g);
+ const Double_t *l1,Double_t *l2){
+ 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(const Int_t index1,const Int_t index2,
+ Double_t *l1,Double_t *l2){
+ 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){
+ 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(const Int_t index,const Double_t **g,Double_t **l){
+ fGm[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(const Int_t index,const Double_t **g,
+ Double_t **l){
+ if(IsGeantToTracking()) fGm[index]->GtoLPositionError((
+ Double_t (*)[3])g,(Double_t (*)[3])l);
+ else fGm[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(const Int_t index,const Double_t **l,Double_t **g){
+ fGm[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(const Int_t index,const Double_t **l,
+ Double_t **g){
+ if(IsGeantToTracking()) fGm[index]->LtoGPositionError((
+ Double_t (*)[3])g,(Double_t (*)[3])l);
+ else fGm[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(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);
+ const Double_t **l1,Double_t **l2){
+ 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(const Int_t index1,const Int_t index2,
+ const Double_t **l1,Double_t **l2){Double_t g[3][3];
+ LtoGErrorMatrixTracking(index1,l1,(Double_t **)g);
+ GtoLErrorMatrixTracking(index2,(const Double_t **)g,l2);}
+// Find Specific Modules
+ Int_t GetNearest(const Double_t g[3],const Int_t lay=0);
+ void GetNearest27(const Double_t g[3],Int_t n[27],const Int_t lay=0);
+ // 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(const Int_t index,const Double_t g[3]){
+ return TMath::Sqrt(fGm[index]->Distance2(g));}
+// Geometry manipulation
+ void GlobalChange(const Float_t *tran,const Float_t *rot);
+ void GlobalCylindericalChange(const Float_t *tran,const Float_t *rot);
+ void RandomChange(const Float_t *stran,const Float_t *srot);
+ void RandomCylindericalChange(const Float_t *stran,const Float_t *srot);
+ void GeantToTracking(AliITSgeom &source); // This converts the geometry
+// Other routines.
void PrintComparison(FILE *fp,AliITSgeom *other);
- void PrintData(FILE *fp,Int_t lay,Int_t lad,Int_t det);
+ void PrintData(FILE *fp,const Int_t lay,const Int_t lad,const 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
-
- 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.
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.
+ Int_t fTrans; //Flag to keep track of which transformation
+ Int_t fNlayers; //The number of layers.
+ Int_t fNmodules;//The total number of modules
+ Int_t *fNlad; //!Array of the number of ladders/layer(layer)
+ Int_t *fNdet; //!Array of the number of detectors/ladder(layer)
+ AliITSgeomMatrix **fGm; //[fNmodules] Structure of trans. and rotation.
+ TObjArray *fShape; //Array of shapes and detector information.
- ClassDef(AliITSgeom,1) // ITS geometry class
+ ClassDef(AliITSgeom,2) // ITS geometry class
};
#endif
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