* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.9 2000/08/29 20:19:03 nilsen
-Removed dependancy on structure AliITSeomS and replaced it with class
-AliITSgeomMatrix. Added many new functions with many new arguments. Most
-in the form of in line functions for speed.
-
-Revision 1.4.4.6 2000/06/04 16:33:32 Nilsen
-A restructured AliITSgeom class. Now used AliITSgeomMatrix.
-
-Revision 1.4.4.5 2000/03/04 23:42:39 Nilsen
-Updated the comments/documentations and improved the maintainability of the
-code.
-
-Revision 1.4.4.4 2000/03/02 21:27:07 Nilsen
-Added two functions, SetByAngles and SetTrans.
-
-Revision 1.4.4.3 2000/01/23 03:09:10 Nilsen
-// fixed compiler warnings for new function LtLErrorMatrix(...)
-
-Revision 1.4.4.2 2000/01/19 23:18:20 Nilsen
-Added transformations of Error matrix to AliITSgeom and fixed some typos
-in AliITS.h and AliITShitIndex.h
-
-Revision 1.4.4.1 2000/01/12 19:03:32 Nilsen
-This is the version of the files after the merging done in December 1999.
-See the ReadMe110100.txt file for details
-
-Revision 1.4 1999/10/15 07:03:20 fca
-Fixed bug in GetModuleId(Int_t index,Int_t &lay,Int_t &lad, Int_t &det) and
-a typo in the creator. aliroot need to be rerun to get a fixed geometry.
-
-Revision 1.3 1999/10/04 15:20:12 fca
-Correct syntax accepted by g++ but not standard for static members, remove minor warnings
-
-Revision 1.2 1999/09/29 09:24:20 fca
-Introduction of the Copyright and cvs Log
-
-*/
+/* $Id$ */
///////////////////////////////////////////////////////////////////////
// ITS geometry manipulation routines. //
// By: Bjorn S. Nilsen //
// version: 0.0.1 //
// Updated May 27 1999. //
-// Added Cylindrical random and global based changes. //
-// Added function PrintComparison. //
+// Added Cylindrical random and global based changes. //
+// //
+// Modified and added functions Feb. 7 2006 //
///////////////////////////////////////////////////////////////////////
//
// Data Members:
//
+// 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 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
+// TArrayI 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
+// TArrayI 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.
//
-// AliITSgeomMatrix *fGm
+// TObjArray fGm containing objects of type AliITSgeomMatrix
// A pointer to an array of AliITSgeomMatrix classes. One element
// per module (detector) in the ITS. AliITSgeomMatrix basicly contains
// all of the necessary information about the detector and it's coordinate
// transformations.
//
-// 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.
////////////////////////////////////////////////////////////////////////
-#include <iostream.h>
-#include <fstream.h>
-#include <iomanip.h>
-#include <stdio.h>
-#include <string.h>
+#include <Riostream.h>
#include <ctype.h>
-#include <TObject.h>
+
#include <TRandom.h>
+#include <TSystem.h>
+#include <TArrayI.h>
#include "AliITSgeom.h"
-#include "AliITSgeomMatrix.h"
-#include "AliITSgeomSPD.h"
-#include "AliITSgeomSDD.h"
-#include "AliITSgeomSSD.h"
+#include "AliLog.h"
ClassImp(AliITSgeom)
-//_____________________________________________________________________
-AliITSgeom::AliITSgeom(){
-////////////////////////////////////////////////////////////////////////
-// The default constructor for the AliITSgeom class. It, by default,
-// sets fNlayers to zero and zeros all pointers.
-////////////////////////////////////////////////////////////////////////
- // Default constructor.
- // Do not allocate anything zero everything
- fTrans = 0; // standard GEANT global/local coordinate system.
- fNlayers = 0;
- fNlad = 0;
- fNdet = 0;
- fGm = 0;
- fShape = 0;
- return;
+//______________________________________________________________________
+AliITSgeom::AliITSgeom():
+TObject(),
+fVersion("GEANT"),// Transformation version.
+fTrans(0), // Flag to keep track of which transformation
+fNmodules(0), // The total number of modules
+fNlayers(0), // The number of layers.
+fNlad(), //[] Array of the number of ladders/layer(layer)
+fNdet(), //[] Array of the number of detector/ladder(layer)
+fGm(0,0) // Structure of translation. and rotation.
+{
+ // The default constructor for the AliITSgeom class. It, by default,
+ // sets fNlayers to zero and zeros all pointers.
+ // Do not allocate anything zero everything.
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // a zeroed AliITSgeom object.
+
+ fGm.SetOwner(kTRUE);
+ return;
}
-//_____________________________________________________________________
-AliITSgeom::~AliITSgeom(){
-////////////////////////////////////////////////////////////////////////
-// The destructor for the AliITSgeom class. If the arrays fNlad,
-// fNdet, or fGm 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.
-////////////////////////////////////////////////////////////////////////
- // Default destructor.
- // if arrays exist delete them. Then set everything to zero.
- if(fGm!=0){
- for(Int_t i=0;i<fNlayers;i++) delete fGm[i];
- delete fGm;
- } // end if fGm!=0
- if(fNlad!=0) delete[] fNlad;
- if(fNdet!=0) delete[] fNdet;
- fNlayers = 0;
- fNlad = 0;
- fNdet = 0;
- fGm = 0;
- return;
+//______________________________________________________________________
+AliITSgeom::AliITSgeom(Int_t itype,Int_t nlayers,const Int_t *nlads,
+ const Int_t *ndets,Int_t mods):
+TObject(),
+fVersion("GEANT"), // Transformation version.
+fTrans(itype), // Flag to keep track of which transformation
+fNmodules(mods), // The total number of modules
+fNlayers(nlayers), // The number of layers.
+fNlad(nlayers,nlads),//[] Array of the number of ladders/layer(layer)
+fNdet(nlayers,ndets),//[] Array of the number of detector/ladder(layer)
+fGm(mods,0) // Structure of translation. and rotation.
+{
+ // A simple constructor to set basic geometry class variables
+ // Inputs:
+ // Int_t itype the type of transformation kept.
+ // bit 0 => Standard GEANT
+ // bit 1 => ITS tracking
+ // bit 2 => A change in the coordinate system
+ // has been made. others are still to be defined
+ // as needed.
+ // Int_t nlayers The number of ITS layers also set the size of
+ // the arrays
+ // Int_t *nlads an array of the number of ladders for each
+ // layer. This array must be nlayers long.
+ // Int_t *ndets an array of the number of detectors per ladder
+ // for each layer. This array must be nlayers long.
+ // Int_t mods The number of modules. Typically the sum of all the
+ // detectors on every layer and ladder.
+ // Outputs:
+ // none
+ // Return:
+ // A properly inilized AliITSgeom object.
+
+ fGm.SetOwner(kTRUE);
+ return;
}
//______________________________________________________________________
-void AliITSgeom::ReadNewFile(const char *filename){
- printf("New file format not defined yet\n");
+void AliITSgeom::Init(Int_t itype,Int_t nlayers,const Int_t *nlads,
+ const Int_t *ndets,Int_t mods){
+ // A simple Inilizer to set basic geometry class variables
+ // Inputs:
+ // Int_t itype the type of transformation kept.
+ // bit 0 => Standard GEANT
+ // bit 1 => ITS tracking
+ // bit 2 => A change in the coordinate system
+ // has been made. others are still to be defined
+ // as needed.
+ // Int_t nlayers The number of ITS layers also set the size of
+ // the arrays
+ // Int_t *nlads an array of the number of ladders for each
+ // layer. This array must be nlayers long.
+ // Int_t *ndets an array of the number of detectors per ladder
+ // for each layer. This array must be nlayers long.
+ // Int_t mods The number of modules. Typically the sum of all the
+ // detectors on every layer and ladder.
+ // Outputs:
+ // none
+ // Return:
+ // A properly inilized AliITSgeom object.
+
+ fVersion = "GEANT"; // Transformation version.
+ fTrans = itype; // Flag to keep track of which transformation
+ fNmodules = mods; // The total number of modules
+ fNlayers = nlayers; // The number of layers.
+ fNlad.Set(nlayers,nlads);//[] Array of the number of ladders/layer(layer)
+ fNdet.Set(nlayers,ndets);//[] Array of the number of detector/ladder(layer)
+ fGm.Clear();
+ fGm.Expand(mods); // Structure of translation. and rotation.
+ fGm.SetOwner(kTRUE);
return;
}
-//_____________________________________________________________________
-AliITSgeom::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.
-////////////////////////////////////////////////////////////////////////
- FILE *pf;
- Int_t i,lm=0,id[3];
- Int_t l,a,d;
- Float_t x,y,z,o,p,q,r,s,t;
- Double_t rot6[6],tran[3];
- char buf[200],*buff=0; // input character buffer;
-
- pf = fopen(filename,"r");
-
- fNlayers = 6; // set default number of ladders
-TryAgain:
- fNlad = new Int_t[fNlayers];
- fNdet = new Int_t[fNlayers];
- fNmodules = 0;
- // find the number of ladders and detectors in this geometry.
- for(i=0;i<fNlayers;i++){fNlad[i]=fNdet[i]=0;} // zero out arrays
- while(fgets(buf,200,pf)!=NULL){ // for ever loop
- for(i=0;i<200;i++)if(buf[i]!=' '){ // remove blank spaces.
- buff = &(buf[i]);
- break;
- } // end for i
- // remove blank lines and comments.
- if(buff[0]=='\n'||buff[0]=='#'||buff[0]=='!'||
- (buff[0]=='/'&&buff[1]=='/')) continue;
- if(isalpha(buff[0])) { // must be the new file formated file.
- fclose(pf);
- delete[] fNlad;delete[] fNdet;
- ReadNewFile(filename);
- return;
- } // end if isalpha(buff[0])
- sscanf(buff,"%d %d %d %f %f %f %f %f %f %f %f %f",
- &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
- if(l>lm) lm = l;
- if(l<1 || l>fNlayers) {
- printf("error in file %s layer=%d min. is 1 max is %d/n",
- filename,l,fNlayers);
- continue;
- }// end if l
- fNmodules++;
- if(l<=fNlayers&&fNlad[l-1]<a) fNlad[l-1] = a;
- if(l<=fNlayers&&fNdet[l-1]<d) fNdet[l-1] = d;
- } // end while ever loop
- if(lm>fNlayers){
- delete[] fNlad;
- delete[] fNdet;
- fNlayers = lm;
- goto TryAgain;
- } // end if lm>fNlayers
- // counted the number of ladders and detectors now allocate space.
- fGm = new AliITSgeomMatrix*[fNmodules];
-
- // Set up Shapes for a default configuration of 6 layers.
- fTrans = 0; // standard GEANT global/local coordinate system.
- fShape = new TObjArray(3);
- AddShape((TObject *) new AliITSgeomSPD()); // shape 0
- AddShape((TObject *) new AliITSgeomSDD()); // shape 1
- AddShape((TObject *) new AliITSgeomSPD()); // shape 2
-
- // prepare to read in transforms
- lm = 0; // reuse lm as counter of modules.
- rewind(pf); // start over reading file
- while(fgets(buf,200,pf)!=NULL){ // for ever loop
- for(i=0;i<200;i++)if(buf[i]!=' '){ // remove blank spaces.
- buff = &(buf[i]);
- break;
- } // end for i
- // remove blank lines and comments.
- if(buff[0]=='\n'||buff[0]=='#'||buff[0]=='!'||
- (buff[0]=='/'&&buff[1]=='/')) continue;
- x = y = z = o = p = q = r = s = t = 0.0;
- sscanf(buff,"%d %d %d %f %f %f %f %f %f %f %f %f",
- &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
- if(l<1 || l>fNlayers) {
- printf("error in file %s layer=%d min. is 1 max is %d/n",
- filename,l,fNlayers);
- continue;
- }// end if l
- id[0] = l;id[1] = a;id[2] = d;
- tran[0] = tran[1] = tran[2] = 0.0;
- tran[0] = (Double_t)x;tran[1] = (Double_t)y;tran[2] = (Double_t)z;
- rot6[0] = rot6[1] = rot6[2] = rot6[3] = rot6[4] = rot6[5] =0.0;
- rot6[0] = (Double_t)o;rot6[1] = (Double_t)p;rot6[2] = (Double_t)q;
- rot6[3] = (Double_t)r;rot6[4] = (Double_t)s;rot6[5] = (Double_t)t;
- switch (l){
- case 1: case 2: // layer 1 or2 SPD
- fGm[lm++] = new AliITSgeomMatrix(rot6,0,id,tran);
- break;
- case 3: case 4: // layer 3 or 4 SDD
- fGm[lm++] = new AliITSgeomMatrix(rot6,1,id,tran);
- break;
- case 5: case 6: // layer 5 or 6 SSD
- fGm[lm++] = new AliITSgeomMatrix(rot6,2,id,tran);
- break;
- } // end switch
- } // end while ever loop
- fclose(pf);
+//______________________________________________________________________
+void AliITSgeom::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]){
+ // Given the translation vector tran[3] and the rotation matrix rot[1],
+ // this function creates and adds to the TObject Array fGm the
+ // AliITSgeomMatrix object.
+ // The rot[10] matrix is set up like:
+ /* / rot[0] rot[1] rot[2] \
+ // | rot[3] rot[4] rot[5] |
+ // \ rot[6] rot[7] rot[8] / if(rot[9]!=0) then the Identity matrix
+ // is used regardless of the values in rot[0]-rot[8].
+ */
+ // Inputs:
+ // Int_t mod The module number. The location in TObjArray
+ // Int_t lay The layer where this module is
+ // Int_t lad On which ladder this module is
+ // Int_t det Which detector on this ladder this module is
+ // AliITSDetector idet The type of detector see AliITSgeom.h
+ // Double_t tran[3] The translation vector
+ // Double_t rot[10] The rotation matrix.
+ // Outputs:
+ // none
+ // Return:
+ // none.
+ Int_t id[3];
+ Double_t r[3][3] = {{1.0,0.0,0.0},{0.0,1.0,0.0},{0.0,0.0,1.0}};
+
+ if(mod<0||mod>=fGm.GetSize()){
+ Error("CreateMatrix","mod=%d is out of bounds max value=%d",mod,
+ fGm.GetSize());
+ return;
+ } // end if
+ delete fGm.At(mod);
+ id[0] = lay; id[1] = lad; id[2] = det;
+ if(rot[9]!=0.0) { // null rotation
+ r[0][0] = rot[0]; r[0][1] = rot[1]; r[0][2] = rot[2];
+ r[1][0] = rot[3]; r[1][1] = rot[4]; r[1][2] = rot[5];
+ r[2][0] = rot[6]; r[2][1] = rot[7]; r[2][2] = rot[8];
+ } // end if
+ fGm.AddAt(new AliITSgeomMatrix(idet,id,r,tran),mod);
}
+//______________________________________________________________________
+AliITSgeom::~AliITSgeom(){
+ // The destructor for the AliITSgeom class. If the arrays fNlad,
+ // fNdet, or fGm 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
+ // Inputs:
+ // none.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
-//________________________________________________________________________
-AliITSgeom::AliITSgeom(AliITSgeom &source){
-////////////////////////////////////////////////////////////////////////
-// The copy constructor for the AliITSgeom class. It calls the
-// = operator function. See the = operator function for more details.
-////////////////////////////////////////////////////////////////////////
-
- *this = source; // Just use the = operator for now.
-
return;
}
+//______________________________________________________________________
+AliITSgeom::AliITSgeom(const AliITSgeom &source) :
+TObject(source),
+fVersion(source.fVersion), // Transformation version.
+fTrans(source.fTrans), // Flag to keep track of which transformation
+fNmodules(source.fNmodules),// The total number of modules
+fNlayers(source.fNlayers), // The number of layers.
+fNlad(source.fNlad), // Array of the number of ladders/layer(layer)
+fNdet(source.fNdet), // Array of the number of detector/ladder(layer)
+fGm(source.fGm.GetSize(),source.fGm.LowerBound())// Structure of
+ // translation and rotation.
+{
+ // The copy constructor for the AliITSgeom class. It calls the
+ // = operator function. See the = operator function for more details.
+ // Inputs:
+ // AliITSgeom &source The AliITSgeom class with which to make this
+ // a copy of.
+ // Outputs:
+ // none.
+ // Return:
+ // none.
+ Int_t i,n;
+
+ n = source.fGm.GetLast()+1;
+ for(i=source.fGm.LowerBound();i<n;i++){
+ fGm.AddAt(new AliITSgeomMatrix(*((AliITSgeomMatrix*)(
+ source.fGm.At(i)))),i);
+ } // end for i
+ fGm.SetOwner(kTRUE);
+ return;
+}
+//______________________________________________________________________
+AliITSgeom& AliITSgeom::operator=(const 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.
+ // Inputs:
+ // AliITSgeom &source The AliITSgeom class with which to make this
+ // a copy of.
+ // Outputs:
+ // none.
+ // Return:
+ // *this The a new copy of source.
+ Int_t i;
-//________________________________________________________________________
-void AliITSgeom::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.
-////////////////////////////////////////////////////////////////////////
- Int_t i;
-
- if(this == &source) return; // don't assign to ones self.
-
- // if there is an old structure allocated delete it first.
- if(this->fGm != 0){
- for(i=0;i<this->fNmodules;i++) delete this->fGm[i];
- delete this->fGm;
- } // end if fGm != 0
- if(fNlad != 0) delete[] fNlad;
- if(fNdet != 0) delete[] fNdet;
-
- this->fTrans = source.fTrans;
- this->fNmodules = source.fNmodules;
- this->fNlayers = source.fNlayers;
- this->fNlad = new Int_t[fNlayers];
- for(i=0;i<this->fNlayers;i++) this->fNlad[i] = source.fNlad[i];
- this->fNdet = new Int_t[fNlayers];
- for(i=0;i<this->fNlayers;i++) this->fNdet[i] = source.fNdet[i];
- this->fShape = new TObjArray(*(source.fShape));//This does not make a proper copy.
- this->fGm = new AliITSgeomMatrix*[this->fNmodules];
- for(i=0;i<this->fNmodules;i++){
- this->fGm[i] = new AliITSgeomMatrix(*(source.fGm[i]));
- } // end for i
- return;
-}//_____________________________________________________________________
-Int_t AliITSgeom::GetModuleIndex(const Int_t lay,const Int_t lad,
- const Int_t det){
-////////////////////////////////////////////////////////////////////////
-// This routine computes the module index number from the layer,
-// ladder, and detector numbers. The number of ladders and detectors
-// per layer is determined when this geometry package is constructed,
-// see AliITSgeom(const char *filename) for specifics.
-////////////////////////////////////////////////////////////////////////
+ if(this == &source) return *this; // don't assign to ones self.
+
+ // if there is an old structure allocated delete it first.
+ this->fGm.Clear();
+
+ this->fVersion = source.fVersion;
+ this->fTrans = source.fTrans;
+ this->fNmodules = source.fNmodules;
+ this->fNlayers = source.fNlayers;
+ this->fNlad = source.fNlad;
+ this->fNdet = source.fNdet;
+ this->fGm.Expand(this->fNmodules);
+ for(i=source.fGm.LowerBound();i<source.fGm.GetLast();i++){
+ fGm.AddAt(new AliITSgeomMatrix(*((AliITSgeomMatrix*)(
+ source.fGm.At(i)))),i);
+ } // end for i
+ fGm.SetOwner(kTRUE);
+ return *this;
+}
+//______________________________________________________________________
+Int_t AliITSgeom::GetModuleIndex(Int_t lay,Int_t lad,Int_t det)const{
+ // This routine computes the module index number from the layer,
+ // ladder, and detector numbers. The number of ladders and detectors
+ // per layer is determined when this geometry package is constructed,
+ // see AliITSgeom(const char *filename) for specifics.
+ // Inputs:
+ // Int_t lay The layer number. Starting from 1.
+ // Int_t lad The ladder number. Starting from 1.
+ // Int_t det The detector number. Starting from 1.
+ // Outputs:
+ // none.
+ // Return:
+ // the module index number, starting from zero.
Int_t i,j,k,id[3];
i = fNdet[lay-1] * (lad-1) + det - 1;
j = 0;
for(k=0;k<lay-1;k++) j += fNdet[k]*fNlad[k];
i = i+j;
- fGm[i]->GetIndex(id);
+ if(i>=fNmodules) return -1;
+ GetGeomMatrix(i)->GetIndex(id);
if(id[0]==lay&&id[1]==lad&&id[2]==det) return i;
// Array of modules fGm is not in expected order. Search for this index
for(i=0;i<fNmodules;i++){
- fGm[i]->GetIndex(id);
- if(id[0]==lay&&id[1]==lad&&id[2]==det) return i;
+ GetGeomMatrix(i)->GetIndex(id);
+ if(id[0]==lay&&id[1]==lad&&id[2]==det) return i;
} // end for i
// This layer ladder and detector combination does not exist return -1.
return -1;
}
//______________________________________________________________________
-void AliITSgeom::GetModuleId(const Int_t index,
- Int_t &lay,Int_t &lad,Int_t &det){
-////////////////////////////////////////////////////////////////////////
-// This routine computes the layer, ladder and detector number
-// given the module index number. The number of ladders and detectors
-// per layer is determined when this geometry package is constructed,
-// see AliITSgeom(const char *filename) for specifics.
-////////////////////////////////////////////////////////////////////////
+void AliITSgeom::GetModuleId(Int_t index,Int_t &lay,Int_t &lad,Int_t &det)
+const{
+ // This routine computes the layer, ladder and detector number
+ // given the module index number. The number of ladders and detectors
+ // per layer is determined when this geometry package is constructed,
+ // see AliITSgeom(const char *filename) for specifics.
+ // Inputs:
+ // Int_t index The module index number, starting from zero.
+ // Outputs:
+ // Int_t lay The layer number. Starting from 1.
+ // Int_t lad The ladder number. Starting from 1.
+ // Int_t det The detector number. Starting from 1.
+ // Return:
+ // none.
Int_t id[3];
-
- fGm[index]->GetIndex(id);
- lay = id[0]; lad = id[1]; det = id[2];
+ AliITSgeomMatrix *g = GetGeomMatrix(index);
+
+ if (g == 0x0){
+ Error("GetModuleId","Can not get GeoMatrix for index = %d",index);
+ lay = -1; lad = -1; det = -1;
+ }else{
+ g->GetIndex(id);
+ lay = id[0]; lad = id[1]; det = id[2];
+ }// End if
return;
-
// The old way kept for posterity.
/*
Int_t i,j,k;
return;
*/
}
-//___________________________________________________________________________
-Int_t AliITSgeom::GetStartDet(const Int_t dtype){
- /////////////////////////////////////////////////////////////////////////
- // returns the starting module index value for a give type of detector id
- /////////////////////////////////////////////////////////////////////////
-
- switch(dtype){
- case 0:
- return GetModuleIndex(1,1,1);
- break;
- case 1:
- return GetModuleIndex(3,1,1);
- break;
- case 2:
- return GetModuleIndex(5,1,1);
- break;
- default:
- printf("<AliITSgeom::GetFirstDet> undefined detector type\n");
- return 0;
- } // end switch
-
- printf("<AliITSgeom::GetFirstDet> undefined detector type\n");
- return 0;
-}
-
-//___________________________________________________________________________
-Int_t AliITSgeom::GetLastDet(const Int_t dtype){
- /////////////////////////////////////////////////////////////////////////
- // returns the last module index value for a give type of detector id
- /////////////////////////////////////////////////////////////////////////
-
- switch(dtype){
- case 0:
- return GetLastSPD();
- break;
- case 1:
- return GetLastSDD();
- break;
- case 2:
- return GetLastSSD();
- break;
- default:
- printf("<AliITSgeom::GetLastDet> undefined detector type\n");
- return 0;
- } // end switch
-
- printf("<AliITSgeom::GetLastDet> undefined detector type\n");
- return 0;
-}
-
-//___________________________________________________________________________
-void AliITSgeom::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->fGm[i][j].frx - other->fGm[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.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,idt[3],ido[3];
- Double_t tt[3],to[3]; // translation
- Double_t rt[3],ro[3]; // phi in radians
- Double_t mt[3][3],mo[3][3]; // matrixes
- AliITSgeomMatrix *gt,*go;
- Bool_t t;
-
- for(i=0;i<this->fNmodules;i++){
- gt = this->GetGeomMatrix(i);
- go = other->GetGeomMatrix(i);
- gt->GetIndex(idt);
- go->GetIndex(ido);
- t = kFALSE;
- for(i=0;i<3;i++) t = t&&idt[i]!=ido[i];
- if(t) fprintf(fp,"%4.4d %1.1d %2.2d %2.2d %1.1d %2.2d %2.2d\n",i,
- idt[0],idt[1],idt[2],ido[0],ido[1],ido[2]);
- gt->GetTranslation(tt);
- go->GetTranslation(to);
- gt->GetAngles(rt);
- go->GetAngles(ro);
- t = kFALSE;
- for(i=0;i<3;i++) t = t&&tt[i]!=to[i];
- if(t) fprintf(fp,"%1.1d %2.2d %2.2d dTrans=%f %f %f drot=%f %f %f\n",
- idt[0],idt[1],idt[2],
- tt[0]-to[0],tt[1]-to[1],tt[2]-to[2],
- rt[0]-ro[0],rt[1]-ro[1],rt[2]-ro[2]);
- t = kFALSE;
- gt->GetMatrix(mt);
- go->GetMatrix(mo);
- for(i=0;i<3;i++)for(j=0;j<3;j++) t = mt[i][j] != mo[i][j];
- if(t){
- fprintf(fp,"%1.1d %2.2d %2.2d dfr= %e %e %e\n",
- idt[0],idt[1],idt[2],
- mt[0][0]-mo[0][0],mt[0][1]-mo[0][1],mt[0][2]-mo[0][2]);
- fprintf(fp," dfr= %e %e %e\n",
- mt[1][0]-mo[1][0],mt[1][1]-mo[1][1],mt[1][2]-mo[1][2]);
- fprintf(fp," dfr= %e %e %e\n",
- mt[2][0]-mo[2][0],mt[2][1]-mo[2][1],mt[2][2]-mo[2][2]);
- } // end if t
- } // end for i
- return;
-}
-
-//___________________________________________________________________________
-void AliITSgeom::PrintData(FILE *fp,
- const Int_t lay,const Int_t lad,const Int_t det){
-////////////////////////////////////////////////////////////////////////
-// 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. fprintf 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.
-////////////////////////////////////////////////////////////////////////
- AliITSgeomMatrix *gt;
- Double_t t[3],r[3],m[3][3];
-
- gt = this->GetGeomMatrix(GetModuleIndex(lay,lad,det));
- gt->GetTranslation(t);
- gt->GetAngles(r);
- fprintf(fp,"%1.1d %2.2d %2.2d Trans=%f %f %f rot=%f %f %f Shape=%d\n",
- lay,lad,det,t[0],t[1],t[2],r[0],r[1],r[2],
- gt->GetDetectorIndex());
- gt->GetMatrix(m);
- fprintf(fp," dfr= %e %e %e\n",m[0][0],m[0][1],m[0][2]);
- fprintf(fp," dfr= %e %e %e\n",m[1][0],m[1][1],m[1][2]);
- fprintf(fp," dfr= %e %e %e\n",m[2][0],m[2][1],m[2][2]);
- return;
-}
-//___________________________________________________________________________
-ofstream & AliITSgeom::PrintGeom(ofstream &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 writing.
-////////////////////////////////////////////////////////////////////////
- // Stream an object of class AliITSgeom.
- Int_t i;
-
- R__b.setf(ios::scientific);
- R__b << fTrans << " ";
- R__b << fNmodules << " ";
- R__b << fNlayers << " ";
- for(i=0;i<fNlayers;i++) R__b << fNlad[i] << " ";
- for(i=0;i<fNlayers;i++) R__b << fNdet[i] << "\n";
- for(i=0;i<fNmodules;i++) {
- R__b <<setprecision(16) << *(fGm[i]) << "\n";
+//______________________________________________________________________
+Int_t AliITSgeom::GetNDetTypes(Int_t &max)const{
+ // Finds and returns the number of detector types used and the
+ // maximum detector type value. Only counts id >=0 (no undefined
+ // values. See AliITSgeom.h for list of AliITSDetecor enumerated types.
+ // Inputs:
+ // none.
+ // Outputs:
+ // The maximum detector type used
+ // Return:
+ // The number of detector types used
+ Int_t i,*n,id;
+
+ max = -1;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>max) max=id;
} // end for i
- return R__b;
-}
-//___________________________________________________________________________
-ifstream & AliITSgeom::ReadGeom(ifstream &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 writing.
-////////////////////////////////////////////////////////////////////////
- // Stream an object of class AliITSgeom.
- Int_t i;
-
- fNlad = new Int_t[fNlayers];
- fNdet = new Int_t[fNlayers];
- if(fGm!=0){
- for(i=0;i<fNmodules;i++) delete fGm[i];
- delete fGm;
- } // end if fGm!=0
-
- R__b >> fTrans >> fNmodules >> fNlayers;
- fNlad = new Int_t[fNlayers];
- fNdet = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) R__b >> fNlad[i];
- for(i=0;i<fNlayers;i++) R__b >> fNdet[i];
- fGm = new AliITSgeomMatrix*[fNmodules];
- for(i=0;i<fNmodules;i++){
- fGm[i] = new AliITSgeomMatrix;
- R__b >> *(fGm[i]);
- } // end for i
- return R__b;
-}
-//___________________________________________________________________________
-void AliITSgeom::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 writing.
-////////////////////////////////////////////////////////////////////////
- // Stream an object of class AliITSgeom.
- Int_t i,j,k,l;
- UInt_t R__s=0, R__c=0;
-
- if (R__b.IsReading()) {
- Version_t R__v = R__b.ReadVersion();
- if (R__v==1) {
- if(fNlad!=0) delete[] fNlad;
- if(fNdet!=0) delete[] fNdet;
- if(fGm!=0){
- for(i=0;i<fNlayers;i++) delete[] fGm[i];
- delete[] fGm;
- } // end if fGm!=0
- Int_t idt,id[3],inmax;
- Double_t t[3],r[3],m[9],s[3][3];
- TObject::Streamer(R__b);
- fTrans = 0;
- R__b >> fNlayers;
- fNlad = new Int_t[fNlayers];
- fNdet = new Int_t[fNlayers];
- for(i=0;i<fNlayers;i++) R__b >> fNlad[i];
- for(i=0;i<fNlayers;i++) R__b >> fNdet[i];
- fNmodules = GetModuleIndex(fNlayers,fNlad[fNlayers-1],
- fNdet[fNlayers-1]);
- fGm = new AliITSgeomMatrix*[fNmodules];
- inmax = 0;
- for(i=0;i<fNlayers;i++){
- for(j=0;j<fNlad[i]*fNdet[i];j++){
- R__b >> idt;
- R__b >> t[0];
- R__b >> t[1];
- R__b >> t[2];
- R__b >> r[0];
- R__b >> r[1];
- R__b >> r[2];
- for(k=0;k<9;k++) R__b >> m[k];
- for(k=0;k<3;k++)for(l=0;l<3;l++) s[k][l] = m[3*k+l];
- GetModuleId(inmax,id[0],id[1],id[2]);
- fGm[inmax++] = new AliITSgeomMatrix(idt,id,s,t);
- } // end for j
- } // end for i
- R__b >> fShape;
- } else if(R__v==2){
- if(fNlad!=0) delete[] fNlad;
- if(fNdet!=0) delete[] fNdet;
- if(fGm!=0){for(i=0;i<fNmodules;i++) delete fGm[i];delete[] fGm;}
- TObject::Streamer(R__b);
- R__b >> fTrans;
- R__b >> fNlayers;
- R__b.ReadArray(fNlad);
- R__b.ReadArray(fNdet);
- R__b >> fShape;
- R__b >> fNmodules;
- fGm = new AliITSgeomMatrix*[fNmodules];
- for(i=0;i<fNmodules;i++){
- fGm[i] = new AliITSgeomMatrix;
- fGm[i]->Streamer(R__b);
- } // end for i
- //R__b.ReadArray(fGm);
- R__b.CheckByteCount(R__s, R__c, AliITSgeom::IsA());
- } // end if R__v==?
- } else { // Writing.
- R__c = R__b.WriteVersion(AliITSgeom::IsA(), kTRUE);
- TObject::Streamer(R__b);
- R__b << fTrans;
- R__b << fNlayers;
- R__b.WriteArray(fNlad, fNlayers);
- R__b.WriteArray(fNdet, fNlayers);
- R__b << fShape;
- R__b << fNmodules;
- //R__b.WriteArray(fGm, __COUNTER__);
- for(i=0;i<fNmodules;i++){
- fGm[i]->Streamer(R__b);
- } // end for i
- R__b.SetByteCount(R__c, kTRUE);
- } // end if reading/writing.
+ n = new Int_t[max+1];
+ for(i=0;i<max;i++) n[i] = 0;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>-1)n[id]++; // note id=-1 => undefined.
+ } // end for i
+ id = 0;
+ for(i=0;i<max;i++) if(n[i]!=0) id++;
+ delete[] n;
+ return id+1;
}
//______________________________________________________________________
-// The following routines modify the transformation of "this"
-// geometry transformations in a number of different ways.
-//______________________________________________________________________
-void AliITSgeom::GlobalChange(const Float_t *tran,const Float_t *rot){
-////////////////////////////////////////////////////////////////////////
-// 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.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j;
- Double_t t[3],r[3];
- AliITSgeomMatrix *g;
-
- fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
- for(i=0;i<fNmodules;i++){
- g = this->GetGeomMatrix(i);
- g->GetTranslation(t);
- g->GetAngles(r);
- for(j=0;j<3;j++){
- t[j] += tran[j];
- r[j] += rot[j];
- } // end for j
- g->SetTranslation(t);
- g->SetAngles(r);
- } // end for i
- return;
-}
-//___________________________________________________________________________
-void AliITSgeom::GlobalCylindericalChange(const Float_t *tran,const Float_t *rot){
-////////////////////////////////////////////////////////////////////////
-// 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.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j;
- Double_t t[3],ro[3],r,r0,phi,rphi;
- AliITSgeomMatrix *g;
-
- fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
- for(i=0;i<fNmodules;i++){
- g = this->GetGeomMatrix(i);
- g->GetTranslation(t);
- g->GetAngles(ro);
- r = r0= TMath::Hypot(t[1],t[0]);
- phi = TMath::ATan2(t[1],t[0]);
- rphi = r0*phi;
- r += tran[0];
- rphi += tran[1];
- phi = rphi/r0;
- t[0] = r*TMath::Cos(phi);
- t[1] = r*TMath::Sin(phi);
- t[2] += tran[2];
- for(j=0;j<3;j++){
- ro[j] += rot[j];
- } // end for j
- g->SetTranslation(t);
- g->SetAngles(ro);
- } // end for i
- return;
+Int_t AliITSgeom::GetNDetTypes(TArrayI &maxs,AliITSDetector *types)const{
+ // Finds and returns the number of detector types used and the
+ // number of each detector type. Only counts id >=0 (no undefined
+ // values. See AliITSgeom.h for list of AliITSDetecor enumerated types.
+ // Inputs:
+ // none.
+ // Outputs:
+ // The maximum detector type used
+ // Return:
+ // The number of detector types used
+ Int_t i,j,*n,id,max;
+
+ max = -1;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>max) max=id;
+ } // end for i
+ n = new Int_t[max+1];
+ for(i=0;i<max;i++) n[i] = 0;
+ for(i=0;i<GetIndexMax();i++){
+ id = GetModuleType(i);
+ if(id>-1)n[id]++; // note id=-1 => undefined.
+ } // end for i
+ id = 0;
+ for(i=0;i<=max;i++) if(n[i]!=0) id++;
+ maxs.Set(id);
+ j = 0;
+ for(i=0;i<=max;i++) if(n[i]!=0){
+ maxs[j] = n[i];
+ types[j++] = (AliITSDetector) i;
+ } // end for i/end if
+ delete[] n;
+ return id;
}
-//___________________________________________________________________________
-void AliITSgeom::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. The sigma of the random displacement
-// is determined by the three element array stran, for the
-// x y and z translations, and the three element array srot,
-// for the three rotation about the axis x y and z.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j;
- Double_t t[3],r[3];
- TRandom ran;
- AliITSgeomMatrix *g;
-
- fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
- for(i=0;i<fNmodules;i++){
- g = this->GetGeomMatrix(i);
- g->GetTranslation(t);
- g->GetAngles(r);
- for(j=0;j<3;j++){
- t[j] += ran.Gaus(0.0,stran[j]);
- r[j] += ran.Gaus(0.0, srot[j]);
- } // end for j
- g->SetTranslation(t);
- g->SetAngles(r);
- } // end for i
- return;
+//______________________________________________________________________
+Int_t AliITSgeom::GetStartDet(Int_t dtype)const{
+ // returns the starting module index value for a give type of detector id.
+ // This assumes that the detector types are different on different layers
+ // and that they are not mixed up.
+ // Inputs:
+ // Int_t dtype A detector type number. 0 for SPD, 1 for SDD,
+ // and 2 for SSD.
+ // Outputs:
+ // none.
+ // Return:
+ // the module index for the first occurrence of that detector type.
+
+ switch(dtype){
+ case 0:
+ return GetModuleIndex(1,1,1);
+ break;
+ case 1:
+ return GetModuleIndex(3,1,1);
+ break;
+ case 2:
+ return GetModuleIndex(5,1,1);
+ break;
+ default:
+ Warning("GetStartDet","undefined detector type %d",dtype);
+ return 0;
+ } // end switch
+
+ Warning("GetStartDet","undefined detector type %d",dtype);
+ return 0;
}
-//___________________________________________________________________________
-void AliITSgeom::RandomCylindericalChange(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. The sigma of the random displacement
-// is determined by the three element array stran, for the
-// r rphi and z translations, and the three element array srot,
-// 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.
-////////////////////////////////////////////////////////////////////////
- Int_t i,j;
- Double_t t[3],ro[3],r,r0,phi,rphi;
- TRandom ran;
- AliITSgeomMatrix *g;
-
- fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
- for(i=0;i<fNmodules;i++){
- g = this->GetGeomMatrix(i);
- g->GetTranslation(t);
- g->GetAngles(ro);
- r = r0= TMath::Hypot(t[1],t[0]);
- phi = TMath::ATan2(t[1],t[0]);
- rphi = r0*phi;
- r += ran.Gaus(0.0,stran[0]);
- rphi += ran.Gaus(0.0,stran[1]);
- phi = rphi/r0;
- t[0] = r*TMath::Cos(phi);
- t[1] = r*TMath::Sin(phi);
- t[2] += ran.Gaus(0.0,stran[2]);
- for(j=0;j<3;j++){
- ro[j] += ran.Gaus(0.0, srot[j]);
- } // end for j
- g->SetTranslation(t);
- g->SetAngles(ro);
- } // end for i
- return;
+//______________________________________________________________________
+Int_t AliITSgeom::GetLastDet(Int_t dtype)const{
+ // returns the last module index value for a give type of detector id.
+ // This assumes that the detector types are different on different layers
+ // and that they are not mixed up.
+ // Inputs:
+ // Int_t dtype A detector type number. 0 for SPD, 1 for SDD,
+ // and 2 for SSD.
+ // Outputs:
+ // Return:
+ // the module index for the last occurrence of that detector type.
+
+ switch((AliITSDetector)dtype){
+ case kSPD:
+ return GetModuleIndex(3,1,1)-1;
+ break;
+ case kSDD:
+ return GetModuleIndex(5,1,1)-1;
+ break;
+ case kSSD:
+ return GetIndexMax()-1;
+ break;
+ case kSSDp: case kSDDp: case kND:
+ default:
+ Warning("GetLastDet","undefined detector type %d",dtype);
+ return 0;
+ } // end switch
+
+ Warning("GetLastDet","undefined detector type %d",dtype);
+ return 0;
}
+
//______________________________________________________________________
-void AliITSgeom::GeantToTracking(AliITSgeom &source){
-/////////////////////////////////////////////////////////////////////////
-// Copy the geometry data but change it to go between the ALICE
-// Global coordinate system to that used by the ITS tracking. A slightly
-// different coordinate system is used when tracking. This coordinate
-// system is only relevant when the geometry represents the cylindrical
-// ALICE ITS geometry. For tracking the Z axis is left alone but X-> -Y
-// and Y-> X such that X always points out of the ITS cylinder for every
-// layer including layer 1 (where the detectors are mounted upside down).
-//Begin_Html
-/*
-<img src="picts/ITS/AliITSgeomMatrix_T1.gif">
-*/
-//End_Html
-////////////////////////////////////////////////////////////////////////
- Int_t i,j,k,l,id[3];
- Double_t R0[3][3],R1[3][3];
- Double_t A0[3][3] = {{0.,+1.,0.},{-1.,0.,0.},{0.,0.,+1.}};
- Double_t A1[3][3] = {{0.,-1.,0.},{+1.,0.,0.},{0.,0.,+1.}};
-
- *this = source; // copy everything
- for(i=0;i<GetIndexMax();i++){
- fGm[i]->GetIndex(id);
- fGm[i]->GetMatrix(R0);
- if(id[0]==1){ // Layer 1 is treated different from the others.
- for(j=0;j<3;j++) for(k=0;k<3;k++){
- R1[j][k] = 0.;
- for(l=0;l<3;l++) R1[j][k] += A0[j][l]*R0[l][k];
- } // end for j,k
- }else{
- for(j=0;j<3;j++) for(k=0;k<3;k++){
- R1[j][k] = 0.;
- for(l=0;l<3;l++) R1[j][k] += A1[j][l]*R0[l][k];
- } // end for j,k
- } // end if
- fGm[i]->SetMatrix(R1);
- } // end for i
- this->fTrans = (this->fTrans && 0xfffe) + 1; // set bit 0 true.
- return;
+void AliITSgeom::PrintData(FILE *fp,Int_t lay,Int_t lad,Int_t det)const{
+ // 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. fprintf 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.
+ // Inputs:
+ // FILE *fp A file pointer to an opened file for
+ // writing in which the results of the
+ // comparison will be written.
+ // Int_t lay The layer number. Starting from 1.
+ // Int_t lad The ladder number. Starting from 1.
+ // Int_t det The detector number. Starting from 1.
+ // Outputs:
+ // none
+ // Return:
+ // none.
+ AliITSgeomMatrix *gt;
+ Double_t t[3],r[3],m[3][3];
+
+ gt = this->GetGeomMatrix(GetModuleIndex(lay,lad,det));
+ gt->GetTranslation(t);
+ gt->GetAngles(r);
+ fprintf(fp,"%1.1d %2.2d %2.2d Trans=%f %f %f rot=%f %f %f Shape=%d\n",
+ lay,lad,det,t[0],t[1],t[2],r[0],r[1],r[2],
+ gt->GetDetectorIndex());
+ gt->GetMatrix(m);
+ fprintf(fp," dfr= %e %e %e\n",m[0][0],m[0][1],m[0][2]);
+ fprintf(fp," dfr= %e %e %e\n",m[1][0],m[1][1],m[1][2]);
+ fprintf(fp," dfr= %e %e %e\n",m[2][0],m[2][1],m[2][2]);
+ return;
}
+
//______________________________________________________________________
-Int_t AliITSgeom::GetNearest(const Double_t g[3],const Int_t lay){
-////////////////////////////////////////////////////////////////////////
-// Finds the Detector (Module) that is nearest the point g [cm] in
-// ALICE Global coordinates. If layer !=0 then the search is restricted
-// to Detectors (Modules) in that particular layer.
-////////////////////////////////////////////////////////////////////////
- Int_t i,l,a,e,in=0;
- Double_t d,dn=1.0e10;
- Bool_t t=lay!=0; // skip if lay = 0 default value check all layers.
-
- for(i=0;i<fNmodules;i++){
- if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
- if((d=fGm[i]->Distance2(g))<dn){
- dn = d;
- in = i;
- } // end if
- } // end for i
- return in;
+Int_t AliITSgeom::GetNearest(const Double_t g[3],Int_t lay)const{
+ // Finds the Detector (Module) that is nearest the point g [cm] in
+ // ALICE Global coordinates. If layer !=0 then the search is restricted
+ // to Detectors (Modules) in that particular layer.
+ // Inputs:
+ // Double_t g[3] The ALICE Cartesian global coordinate from which the
+ // distance is to be calculated with.
+ // Int_t lay The layer to restrict the search to. If layer=0 then
+ // all layers are searched. Default is lay=0.
+ // Output:
+ // none.
+ // Return:
+ // The module number representing the nearest module.
+ Int_t i,l,a,e,in=0;
+ Double_t d,dn=1.0e10;
+ Bool_t t=lay!=0; // skip if lay = 0 default value check all layers.
+
+ for(i=0;i<fNmodules;i++){
+ if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
+ if((d=GetGeomMatrix(i)->Distance2(g))<dn){
+ dn = d;
+ in = i;
+ } // end if
+ } // end for i
+ return in;
}
//______________________________________________________________________
-void AliITSgeom::GetNearest27(const Double_t g[3],Int_t n[27],const Int_t lay){
-////////////////////////////////////////////////////////////////////////
-// Finds 27 Detectors (Modules) that are nearest the point g [cm] in
-// ALICE Global coordinates. If layer !=0 then the search is restricted
-// to Detectors (Modules) in that particular layer. The number 27 comes
-// from including the nearest detector and all those around it (up, down,
-// left, right, forwards, backwards, and the corners).
-////////////////////////////////////////////////////////////////////////
- Int_t i,l,a,e,in[27]={0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,};
- Double_t d,dn[27]={1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
- 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
- 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
- 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
- 1.0e10,1.0e10,1.0e10};
- Bool_t t=(lay!=0); // skip if lay = 0 default value check all layers.
-
- for(i=0;i<fNmodules;i++){
- if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
- for(a=0;a<27;a++){
- d = fGm[i]->Distance2(g);
- if(d<dn[a]){
- for(e=26;e>a;e--){dn[e] = dn[e-1];in[e] = in[e-1];}
- dn[a] = d; in[a] = i;
- } // end if d<dn[i]
- } // end for a
- } // end for i
- for(i=0;i<27;i++) n[i] = in[i];
+void AliITSgeom::GetNearest27(const Double_t g[3],Int_t n[27],Int_t lay)const{
+ // Finds 27 Detectors (Modules) that are nearest the point g [cm] in
+ // ALICE Global coordinates. If layer !=0 then the search is restricted
+ // to Detectors (Modules) in that particular layer. The number 27 comes
+ // from including the nearest detector and all those around it (up, down,
+ // left, right, forwards, backwards, and the corners).
+ // Input:
+ // Double_t g[3] The ALICE Cartesian global coordinate from which the
+ // distance is to be calculated with.
+ // Int_t lay The layer to restrict the search to. If layer=0 then
+ // all layers are searched. Default is lay=0.
+ // Output:
+ // Int_t n[27] The module number representing the nearest 27 modules
+ // in order.
+ // Return:
+ // none.
+ Int_t i,l,a,e,in[27]={0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,};
+ Double_t d,dn[27]={1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
+ 1.0e10,1.0e10,1.0e10};
+ Bool_t t=(lay!=0); // skip if lay = 0 default value check all layers.
+
+ for(i=0;i<fNmodules;i++){
+ if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
+ for(a=0;a<27;a++){
+ d = GetGeomMatrix(i)->Distance2(g);
+ if(d<dn[a]){
+ for(e=26;e>a;e--){dn[e] = dn[e-1];in[e] = in[e-1];}
+ dn[a] = d; in[a] = i;
+ } // end if d<dn[i]
+ } // end for a
+ } // end for i
+ for(i=0;i<27;i++) n[i] = in[i];
+}
+//_______________________________________________________________________
+void AliITSgeom::DetLToTrackingV2(Int_t md,Float_t xin,Float_t zin,
+ Float_t &yout,Float_t &zout) const {
+
+ //Conversion from local coordinates on detectors to local
+ //coordinates used for tracking ("v2")
+ // Inputs:
+ // Int_t md Module number
+ // Float_t xin Standard local coordinate x
+ // Float_t zin Standard local coordinate z
+ // Output:
+ // Float_t yout Tracking local coordinate y
+ // Float_t zout Tracking local coordinate z
+ // Return:
+ // none.
+ Float_t x,y,z;
+ Double_t rt[9],al;
+
+ GetTrans(md,x,y,z);
+ GetRotMatrix(md,rt);
+ al = TMath::ATan2(rt[1],rt[0])+TMath::Pi();
+ yout = -(-xin+(x*((Float_t)TMath::Cos(al))+y*((Float_t)TMath::Sin(al))));
+ if(md<(GetModuleIndex(2,1,1))) yout *= -1;
+ zout = -zin+z;
+}
+//_______________________________________________________________________
+void AliITSgeom::TrackingV2ToDetL(Int_t md,Float_t yin,Float_t zin,
+ Float_t &xout,Float_t &zout) const {
+ //Conversion from local coordinates used for tracking ("v2") to
+ //local detector coordinates
+ // Inputs:
+ // Int_t md Module number
+ // Float_t yin Tracking local coordinate y
+ // Float_t zin Tracking local coordinate z
+ // Output:
+ // Float_t xout Standard local coordinate x
+ // Float_t zout Standard local coordinate z
+ // Return:
+ // none.
+ Float_t x,y,z;
+ Double_t rt[9],al;
+
+ GetTrans(md,x,y,z);
+ GetRotMatrix(md,rt);
+ al = TMath::ATan2(rt[1],rt[0])+TMath::Pi();
+ xout = yin;
+ if(md<(GetModuleIndex(2,1,1))) xout = -xout;
+ xout += (x*((Float_t)TMath::Cos(al))+y*((Float_t)TMath::Sin(al)));
+ zout = -zin+z;
}
//----------------------------------------------------------------------
+
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