1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////
19 // ITS geometry manipulation routines. //
20 // Created April 15 1999. //
22 // By: Bjorn S. Nilsen //
24 // Updated May 27 1999. //
25 // Added Cylindrical random and global based changes. //
26 // Added function PrintComparison. //
27 // Modified and added functions Feb. 7 2006 //
28 ///////////////////////////////////////////////////////////////////////
31 ////////////////////////////////////////////////////////////////////////
32 // The local coordinate system by, default, is show in the following
33 // figures. Also shown are the ladder numbering scheme.
36 <img src="picts/ITS/AliITSgeomMatrix_L1.gif">
39 <font size=+2 color=blue>
40 <p>This shows the relative geometry differences between the ALICE Global
41 coordinate system and the local detector coordinate system.
46 <img src="picts/ITS/its1+2_convention_front_5.gif">
49 <font size=+2 color=blue>
50 <p>This shows the front view of the SPDs and the orientation of the local
51 pixel coordinate system. Note that the inner pixel layer has its y coordinate
52 in the opposite direction from all of the other layers.
57 <img src="picts/ITS/its3+4_convention_front_5.gif">
60 <font size=+2 color=blue>
61 <p>This shows the front view of the SDDs and the orientation of the local
62 pixel coordinate system.
67 <img src="picts/ITS/its5+6_convention_front_5.gif">
70 <font size=+2 color=blue>
71 <p>This shows the front view of the SSDs and the orientation of the local
72 pixel coordinate system.
78 ////////////////////////////////////////////////////////////////////////
80 ////////////////////////////////////////////////////////////////////////
83 // Written by Bjorn S. Nilsen
88 // Transformation version.
90 // Flag to keep track of which transformation
92 // The total number of modules
94 // The number of ITS layers for this geometry. By default this
95 // is 6, but can be modified by the creator function if there are
96 // more layers defined.
99 // A pointer to an array fNlayers long containing the number of
100 // ladders for each layer. This array is typically created and filled
101 // by the AliITSgeom creator function.
104 // A pointer to an array fNlayers long containing the number of
105 // active detector volumes for each ladder. This array is typically
106 // created and filled by the AliITSgeom creator function.
108 // TObjArray fGm containing objects of type AliITSgeomMatrix
109 // A pointer to an array of AliITSgeomMatrix classes. One element
110 // per module (detector) in the ITS. AliITSgeomMatrix basicly contains
111 // all of the necessary information about the detector and it's coordinate
114 // TObjArray fShape containting objects of type AliITSgeom
115 // A pointer to an array of TObjects containing the detailed shape
116 // information for each type of detector used in the ITS. For example
117 // I have created AliITSgeomSPD, AliITSgeomSDD, and
118 // AliITSsegmenttionSSD as example structures, derived from TObjects,
119 // to hold the detector information. I would recommend that one element
120 // in each of these structures, that which describes the shape of the
121 // active volume, be one of the ROOT classes derived from TShape. In this
122 // way it would be easy to have the display program display the correct
123 // active ITS volumes. See the example classes AliITSgeomSPD,
124 // AliITSgeomSDD, and AliITSgeomSSD for a more detailed
126 ////////////////////////////////////////////////////////////////////////
127 #include <Riostream.h>
134 #include "AliITSgeomSPD.h"
135 #include "AliITSgeomSDD.h"
136 #include "AliITSgeomSSD.h"
137 #include "AliITSgeom.h"
142 //______________________________________________________________________
143 AliITSgeom::AliITSgeom():
145 fVersion("GEANT"),// Transformation version.
146 fTrans(0), // Flag to keep track of which transformation
147 fNmodules(0), // The total number of modules
148 fNlayers(0), // The number of layers.
149 fNlad(), //[] Array of the number of ladders/layer(layer)
150 fNdet(), //[] Array of the number of detector/ladder(layer)
151 fGm(0,0), // Structure of translation. and rotation.
152 fShape(0,0) // Array of shapes and detector information.
154 // The default constructor for the AliITSgeom class. It, by default,
155 // sets fNlayers to zero and zeros all pointers.
156 // Do not allocate anything zero everything.
162 // a zeroed AliITSgeom object.
165 fShape.SetOwner(kTRUE);
169 //______________________________________________________________________
170 AliITSgeom::AliITSgeom(Int_t itype,Int_t nlayers,const Int_t *nlads,
171 const Int_t *ndets,Int_t mods):
173 fVersion("GEANT"), // Transformation version.
174 fTrans(itype), // Flag to keep track of which transformation
175 fNmodules(mods), // The total number of modules
176 fNlayers(nlayers), // The number of layers.
177 fNlad(nlayers,nlads),//[] Array of the number of ladders/layer(layer)
178 fNdet(nlayers,ndets),//[] Array of the number of detector/ladder(layer)
179 fGm(mods,0), // Structure of translation. and rotation.
180 fShape(5,0) // Array of shapes and detector information.
182 // A simple constructor to set basic geometry class variables
184 // Int_t itype the type of transformation kept.
185 // bit 0 => Standard GEANT
186 // bit 1 => ITS tracking
187 // bit 2 => A change in the coordinate system has been made.
188 // others are still to be defined as needed.
189 // Int_t nlayers The number of ITS layers also set the size of the arrays
190 // Int_t *nlads an array of the number of ladders for each layer. This
191 // array must be nlayers long.
192 // Int_t *ndets an array of the number of detectors per ladder for each
193 // layer. This array must be nlayers long.
194 // Int_t mods The number of modules. Typically the sum of all the
195 // detectors on every layer and ladder.
199 // A properly inilized AliITSgeom object.
202 fShape.SetOwner(kTRUE);
205 //______________________________________________________________________
206 void AliITSgeom::Init(Int_t itype,Int_t nlayers,const Int_t *nlads,
207 const Int_t *ndets,Int_t mods){
208 // A simple Inilizer to set basic geometry class variables
210 // Int_t itype the type of transformation kept.
211 // bit 0 => Standard GEANT
212 // bit 1 => ITS tracking
213 // bit 2 => A change in the coordinate system has been made.
214 // others are still to be defined as needed.
215 // Int_t nlayers The number of ITS layers also set the size of the arrays
216 // Int_t *nlads an array of the number of ladders for each layer. This
217 // array must be nlayers long.
218 // Int_t *ndets an array of the number of detectors per ladder for each
219 // layer. This array must be nlayers long.
220 // Int_t mods The number of modules. Typically the sum of all the
221 // detectors on every layer and ladder.
225 // A properly inilized AliITSgeom object.
227 fVersion = "GEANT"; // Transformation version.
228 fTrans = itype; // Flag to keep track of which transformation
229 fNmodules = mods; // The total number of modules
230 fNlayers = nlayers; // The number of layers.
231 fNlad.Set(nlayers,nlads);//[] Array of the number of ladders/layer(layer)
232 fNdet.Set(nlayers,ndets);//[] Array of the number of detector/ladder(layer)
234 fGm.Expand(mods); // Structure of translation. and rotation.
237 fShape.Expand(5); // Array of shapes and detector information.
238 fShape.SetOwner(kTRUE);
241 //______________________________________________________________________
242 void AliITSgeom::CreateMatrix(Int_t mod,Int_t lay,Int_t lad,Int_t det,
243 AliITSDetector idet,const Double_t tran[3],
244 const Double_t rot[10]){
245 // Given the translation vector tran[3] and the rotation matrix rot[1],
246 // this function creates and adds to the TObject Array fGm the
247 // AliITSgeomMatrix object.
248 // The rot[10] matrix is set up like:
249 /* / rot[0] rot[1] rot[2] \
250 // | rot[3] rot[4] rot[5] |
251 // \ rot[6] rot[7] rot[8] / if(rot[9]!=0) then the Identity matrix
252 // is used regardless of the values in rot[0]-rot[8].
255 // Int_t mod The module number. The location in TObjArray
256 // Int_t lay The layer where this module is
257 // Int_t lad On which ladder this module is
258 // Int_t det Which detector on this ladder this module is
259 // AliITSDetector idet The type of detector see AliITSgeom.h
260 // Double_t tran[3] The translation vector
261 // Double_t rot[10] The rotation matrix.
267 Double_t r[3][3] = {{1.0,0.0,0.0},{0.0,1.0,0.0},{0.0,0.0,1.0}};
269 if(mod<0||mod>=fGm.GetSize()){
270 Error("CreateMatrix","mod=%d is out of bounds max value=%d",mod,
275 id[0] = lay; id[1] = lad; id[2] = det;
276 if(rot[9]!=0.0) { // null rotation
277 r[0][0] = rot[0]; r[0][1] = rot[1]; r[0][2] = rot[2];
278 r[1][0] = rot[3]; r[1][1] = rot[4]; r[1][2] = rot[5];
279 r[2][0] = rot[6]; r[2][1] = rot[7]; r[2][2] = rot[8];
281 fGm.AddAt(new AliITSgeomMatrix(idet,id,r,tran),mod);
283 //______________________________________________________________________
284 AliITSgeom::~AliITSgeom(){
285 // The destructor for the AliITSgeom class. If the arrays fNlad,
286 // fNdet, or fGm have had memory allocated to them, there pointer values
287 // are non zero, then this memory space is freed and they are set
288 // to zero. In addition, fNlayers is set to zero. The destruction of
289 // TObjArray fShape is, by default, handled by the TObjArray destructor.
299 //______________________________________________________________________
300 void AliITSgeom::ReadNewFile(const char *filename){
301 // It is generally preferred to define the geometry in AliITSgeom
302 // directly from the GEANT geometry, see AliITSvPPRasymm.cxx for
303 // and example. Under some circumstances this may not be possible.
304 // This function will read in a formatted file for all of the
305 // information needed to define the geometry in AliITSgeom.
306 // Unlike the older file format, this file may contain comments
307 // and the order of the data does not need to be completely
308 // respected. A file can be created using the function WriteNewFile
311 // const char *filename The file name of the file to be read in.
317 const char *cmda[]={"Version" ,"fTrans" ,"fNmodules",
318 "fNlayers" ,"fNladers","fNdetectors",
319 "fNDetectorTypes","fShape" ,"Matrix"};
320 Int_t i,j,lNdetTypes,ldet;
322 AliITSgeomMatrix *m=0;
325 Bool_t arrayGm = kFALSE, arrayShape = kFALSE;
327 filtmp = gSystem->ExpandPathName(filename);
328 AliInfo(Form("Reading New .det file %s",filtmp));
329 fp = new ifstream(filtmp,ios::in); // open file to write
330 while(fp->get(c)!=NULL){ // for ever loop
331 if(c==' ') continue; // remove blanks
332 if(c=='\n') continue;
333 if(c=='#' || c=='!') {while(fp->get(c)) if(c=='\n') break; continue;}
336 if(c=='/') {while(fp->get(c)) if(c=='\n') break; continue;}
339 while(fp->get(c)) if(c=='*') break;
349 for(i=0;i<ncmd;i++) if(strcmp(cmd,cmda[i])==0) break;
352 while(isspace(fp->peek())) fp->get(); // skip spaces
353 if(isdigit(fp->peek())){ // new TString
356 for(j=0;j<fVersion.Length();j++) *fp >> fVersion[j];
359 for(j=0;isprint(fp->peek())&&j<20;j++) *fp >> fVersion[j];
368 fGm.Expand(fNmodules);
378 for(j=0;j<fNlayers;j++) *fp >> fNlad[j];
380 case 5: // fNdetectors
381 for(j=0;j<fNlayers;j++) *fp >> fNdet[j];
383 case 6: // fNDetectorTypes
386 fShape.Expand(lNdetTypes);
387 fShape.SetOwner(kTRUE);
392 if(!arrayShape) fShape.Expand(5);
393 fShape.SetOwner(kTRUE);
396 AliITSgeomSPD *spd = new AliITSgeomSPD();
398 ReSetShape(ldet,spd);
400 case kSDD : case kSDDp:{
401 AliITSgeomSDD *sdd = new AliITSgeomSDD();
403 ReSetShape(ldet,sdd);
405 case kSSD : case kSSDp :{
406 AliITSgeomSSD *ssd = new AliITSgeomSSD();
408 ReSetShape(ldet,ssd);
411 AliError(Form("Unknown fShape type number=%d c=%c",ldet,c));
412 while(fp->get(c)) if(c=='\n') break; // skip to end of line.
423 if(ldet<0||ldet>=fGm.GetSize()){
424 Error("ReadNewFile","ldet<0||ldet>=fGm.GetSize()=%d",
429 fGm.AddAt((TObject*)new AliITSgeomMatrix(),ldet);
430 m = (AliITSgeomMatrix*) fGm.At(ldet);
435 AliError(Form("ReadNewFile","Data line i=%d c=%c",i,c));
436 while(fp->get(c)) if(c=='\n') break; // skip this line
444 //______________________________________________________________________
445 void AliITSgeom::WriteNewFile(const char *filename)const{
446 // Writes AliITSgeom, AliITSgeomMatrix, and the defined
447 // AliITSgeomS*D classes to a file in a format that
448 // is more readable and commendable.
450 // const char *filename The file name of the file to be write to.
459 filtmp = gSystem->ExpandPathName(filename);
460 fp = new ofstream(filtmp,ios::out); // open file to write
461 *fp << "//Comment lines begin with two //, one #, or one !" << endl;
462 *fp << "#Blank lines are skipped including /* and */ sections." << endl;
463 *fp << "!and, in principle the order of the lines is not important" <<endl;
464 *fp << "/* In AliITSgeom.h are defined an enumerated type called" << endl;
465 *fp << " AliITSDetectors These are kSPD=" << (Int_t) kSPD ;
466 *fp << ", kSDD=" << (Int_t) kSDD << ", kSSD=" << (Int_t) kSSD;
467 *fp << ", kSSDp=" << (Int_t) kSSDp << ", and kSDDp=" << (Int_t) kSDDp;
469 *fp << "Version "<< fVersion.Length()<<" " << fVersion.Data() << endl;//This should be consistent
470 // with the geometry version.
471 *fp << "fTrans " << fTrans << endl;
472 *fp << "fNmodules " << fNmodules << endl;
473 *fp << "fNlayers " << fNlayers << endl;
475 for(i=0;i<fNlayers;i++) *fp << fNlad[i] << " ";
477 *fp << "fNdetectors ";
478 for(i=0;i<fNlayers;i++) *fp << fNdet[i] << " ";
480 *fp << "fNDetectorTypes " << fShape.GetEntriesFast() << endl;
481 for(i=0;i<fShape.GetEntriesFast();i++){
482 if(!IsShapeDefined(i)) continue; // only print out used shapes.
485 *fp << "fShape " << (Int_t) kSPD << " ";
486 *fp << *((AliITSgeomSPD*)(fShape.At(i)));
489 *fp << "fShape " << (Int_t) kSDD << " ";
490 *fp << *((AliITSgeomSDD*)(fShape.At(i)));
492 case kSSD : case kSSDp :
493 *fp << "fShape " << i << " ";
494 *fp << *((AliITSgeomSSD*)(fShape.At(i)));
497 Error("AliITSgeom::WriteNewFile","Unknown Shape value");
500 for(i=0;i<fNmodules;i++){
501 *fp << "Matrix " << i << " ";
502 *fp << *GetGeomMatrix(i);
504 *fp << "//End of File" << endl;;
509 //______________________________________________________________________
510 AliITSgeom::AliITSgeom(const char *filename):
512 fVersion("test"),// Transformation version.
513 fTrans(0), // Flag to keep track of which transformation
514 fNmodules(0), // The total number of modules
515 fNlayers(0), // The number of layers.
516 fNlad(), // TArrayI of the number of ladders/layer(layer)
517 fNdet(), // TArrayI of the number of detector/ladder(layer)
518 fGm(0,0), // TObjArray Structure of translation. and rotation.
519 fShape(0,0) // TObjArray of detector geom.
521 // The constructor for the AliITSgeom class. All of the data to fill
522 // this structure is read in from the file given my the input filename.
524 // const char *filename The file name of the file to be read in.
528 // An AliITSgeom class initialized from a file.
532 Float_t x,y,z,o,p,q,r,s,t;
533 Double_t rot6[6],tran[3];
534 char buf[200],*buff=0; // input character buffer;
537 filtmp = gSystem->ExpandPathName(filename);
538 Info("AliITSgeom","reading old .det file %s",filtmp);
540 pf = fopen(filtmp,"r");
542 fNlayers = 6; // set default number of ladders
547 // find the number of ladders and detectors in this geometry.
548 for(i=0;i<fNlayers;i++){fNlad[i]=fNdet[i]=0;} // zero out arrays
549 while(fgets(buf,200,pf)!=NULL){ // for ever loop
550 for(i=0;i<200;i++)if(buf[i]!=' '){ // remove blank spaces.
554 // remove blank lines and comments.
555 if(buff[0]=='\n'||buff[0]=='#'||buff[0]=='!'||
556 (buff[0]=='/'&&buff[1]=='/')) continue;
557 if(isalpha(buff[0])) { // must be the new file formated file.
559 ReadNewFile(filename);
561 } // end if isalpha(buff[0])
562 sscanf(buff,"%d %d %d %f %f %f %f %f %f %f %f %f",
563 &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
565 if(l<1 || l>fNlayers) {
566 printf("error in file %s layer=%d min. is 1 max is %d Trying new format\n",
567 filename,l,fNlayers);
569 ReadNewFile(filename);
574 if(l<=fNlayers&&fNlad[l-1]<a) fNlad[l-1] = a;
575 if(l<=fNlayers&&fNdet[l-1]<d) fNdet[l-1] = d;
576 } // end while ever loop
580 } // end if lm>fNlayers
581 // counted the number of ladders and detectors now allocate space.
582 fGm.Expand(fNmodules);
584 fShape.SetOwner(kTRUE);
586 // Set up Shapes for a default configuration of 6 layers.
587 fTrans = 0; // standard GEANT global/local coordinate system.
588 // prepare to read in transforms
589 lm = 0; // reuse lm as counter of modules.
590 rewind(pf); // start over reading file
591 while(fgets(buf,200,pf)!=NULL){ // for ever loop
592 for(i=0;i<200;i++)if(buf[i]!=' '){ // remove blank spaces.
596 // remove blank lines and comments.
597 if(buff[0]=='\n'||buff[0]=='#'||buff[0]=='!'||
598 (buff[0]=='/'&&buff[1]=='/')) continue;
599 x = y = z = o = p = q = r = s = t = 0.0;
600 sscanf(buff,"%d %d %d %f %f %f %f %f %f %f %f %f",
601 &l,&a,&d,&x,&y,&z,&o,&p,&q,&r,&s,&t);
602 if(l<1 || l>fNlayers) {
603 Warning("AliITSgeom","error in file %s layer=%d min. is 1 max is %d",
604 filename,l,fNlayers);
607 id[0] = l;id[1] = a;id[2] = d;
608 tran[0] = tran[1] = tran[2] = 0.0;
609 tran[0] = (Double_t)x;tran[1] = (Double_t)y;tran[2] = (Double_t)z;
610 rot6[0] = rot6[1] = rot6[2] = rot6[3] = rot6[4] = rot6[5] =0.0;
611 rot6[0] = (Double_t)o;rot6[1] = (Double_t)p;rot6[2] = (Double_t)q;
612 rot6[3] = (Double_t)r;rot6[4] = (Double_t)s;rot6[5] = (Double_t)t;
613 if(lm<0||lm>=fGm.GetSize()){
614 Error("AliITSgeom(filename)","lm<0||lm>=fGm.GetSize()=%d",
619 case 1: case 2: // layer 1 or2 SPD
620 fGm.AddAt(new AliITSgeomMatrix(rot6,kSPD,id,tran),lm++);
622 case 3: case 4: // layer 3 or 4 SDD
623 fGm.AddAt(new AliITSgeomMatrix(rot6,kSDD,id,tran),lm++);
625 case 5: case 6: // layer 5 or 6 SSD
626 fGm.AddAt(new AliITSgeomMatrix(rot6,kSSD,id,tran),lm++);
629 } // end while ever loop
633 //______________________________________________________________________
634 AliITSgeom::AliITSgeom(const AliITSgeom &source) : TObject(source),
635 fVersion(source.fVersion),
636 fTrans(source.fTrans),
637 fNmodules(source.fNmodules),
638 fNlayers(source.fNlayers),
642 fShape(source.fShape)
644 // The copy constructor for the AliITSgeom class. It calls the
645 // = operator function. See the = operator function for more details.
647 // AliITSgeom &source The AliITSgeom class with which to make this
654 *this = source; // Just use the = operator for now.
658 //______________________________________________________________________
659 AliITSgeom& AliITSgeom::operator=(const AliITSgeom &source){
660 // The = operator function for the AliITSgeom class. It makes an
661 // independent copy of the class in such a way that any changes made
662 // to the copied class will not affect the source class in any way.
663 // This is required for many ITS alignment studies where the copied
664 // class is then modified by introducing some misalignment.
666 // AliITSgeom &source The AliITSgeom class with which to make this
671 // *this The a new copy of source.
674 if(this == &source) return *this; // don't assign to ones self.
676 // if there is an old structure allocated delete it first.
678 this->fShape.Clear();
680 this->fVersion = source.fVersion;
681 this->fTrans = source.fTrans;
682 this->fNmodules = source.fNmodules;
683 this->fNlayers = source.fNlayers;
684 this->fNlad.Set(fNlayers,source.fNlad.GetArray());
685 this->fNdet.Set(fNlayers,source.fNdet.GetArray());
686 this->fShape.Expand(source.fShape.GetEntriesFast());
687 for(i=0;i<source.fShape.GetEntriesFast();i++)
688 this->fShape.AddAt(new TObject(*(source.fShape.At(i))),i);
689 this->fShape.SetOwner(kTRUE);
690 this->fGm.Expand(this->fNmodules);
691 this->fGm.SetOwner(kTRUE);
692 for(i=0;i<this->fNmodules;i++)
693 if(i<0||i>=fGm.GetSize()){
694 Error("ReadNewFile","i<0||i>=fGm.GetSize()=%d",
698 this->fGm.AddAt(new TObject(*(source.fGm.At(i))),i);
702 //______________________________________________________________________
703 Int_t AliITSgeom::GetModuleIndex(Int_t lay,Int_t lad,Int_t det)const{
704 // This routine computes the module index number from the layer,
705 // ladder, and detector numbers. The number of ladders and detectors
706 // per layer is determined when this geometry package is constructed,
707 // see AliITSgeom(const char *filename) for specifics.
709 // Int_t lay The layer number. Starting from 1.
710 // Int_t lad The ladder number. Starting from 1.
711 // Int_t det The detector number. Starting from 1.
715 // the module index number, starting from zero.
718 i = fNdet[lay-1] * (lad-1) + det - 1;
720 for(k=0;k<lay-1;k++) j += fNdet[k]*fNlad[k];
722 if(i>=fNmodules) return -1;
723 GetGeomMatrix(i)->GetIndex(id);
724 if(id[0]==lay&&id[1]==lad&&id[2]==det) return i;
725 // Array of modules fGm is not in expected order. Search for this index
726 for(i=0;i<fNmodules;i++){
727 GetGeomMatrix(i)->GetIndex(id);
728 if(id[0]==lay&&id[1]==lad&&id[2]==det) return i;
730 // This layer ladder and detector combination does not exist return -1.
733 //______________________________________________________________________
734 void AliITSgeom::GetModuleId(Int_t index,Int_t &lay,Int_t &lad,Int_t &det)const{
735 // This routine computes the layer, ladder and detector number
736 // given the module index number. The number of ladders and detectors
737 // per layer is determined when this geometry package is constructed,
738 // see AliITSgeom(const char *filename) for specifics.
740 // Int_t index The module index number, starting from zero.
742 // Int_t lay The layer number. Starting from 1.
743 // Int_t lad The ladder number. Starting from 1.
744 // Int_t det The detector number. Starting from 1.
748 AliITSgeomMatrix *g = GetGeomMatrix(index);
751 Error("GetModuleId","Can not get GeoMatrix for index = %d",index);
752 lay = -1; lad = -1; det = -1;
755 lay = id[0]; lad = id[1]; det = id[2];
758 // The old way kept for posterity.
762 for(k=0;k<fNlayers;k++){
763 j += fNdet[k]*fNlad[k];
767 i = index -j + fNdet[k]*fNlad[k];
769 for(k=0;k<fNlad[lay-1];k++){
774 det = 1+i-fNdet[lay-1]*k;
778 //______________________________________________________________________
779 Int_t AliITSgeom::GetNDetTypes(Int_t &max)const{
780 // Finds and returns the number of detector types used and the
781 // maximum detector type value. Only counts id >=0 (no undefined
782 // values. See AliITSgeom.h for list of AliITSDetecor enumerated types.
786 // The maximum detector type used
788 // The number of detector types used
792 for(i=0;i<GetIndexMax();i++){
793 id = GetModuleType(i);
796 n = new Int_t[max+1];
797 for(i=0;i<max;i++) n[i] = 0;
798 for(i=0;i<GetIndexMax();i++){
799 id = GetModuleType(i);
800 if(id>-1)n[id]++; // note id=-1 => undefined.
803 for(i=0;i<max;i++) if(n[i]!=0) id++;
807 //______________________________________________________________________
808 Int_t AliITSgeom::GetNDetTypes(TArrayI &maxs,AliITSDetector *types)const{
809 // Finds and returns the number of detector types used and the
810 // number of each detector type. Only counts id >=0 (no undefined
811 // values. See AliITSgeom.h for list of AliITSDetecor enumerated types.
815 // The maximum detector type used
817 // The number of detector types used
821 for(i=0;i<GetIndexMax();i++){
822 id = GetModuleType(i);
825 n = new Int_t[max+1];
826 for(i=0;i<max;i++) n[i] = 0;
827 for(i=0;i<GetIndexMax();i++){
828 id = GetModuleType(i);
829 if(id>-1)n[id]++; // note id=-1 => undefined.
832 for(i=0;i<=max;i++) if(n[i]!=0) id++;
835 for(i=0;i<=max;i++) if(n[i]!=0){
837 types[j++] = (AliITSDetector) i;
838 } // end for i/end if
842 //______________________________________________________________________
843 Int_t AliITSgeom::GetStartDet(Int_t dtype)const{
844 // returns the starting module index value for a give type of detector id.
845 // This assumes that the detector types are different on different layers
846 // and that they are not mixed up.
848 // Int_t dtype A detector type number. 0 for SPD, 1 for SDD, and 2 for SSD.
852 // the module index for the first occurrence of that detector type.
856 return GetModuleIndex(1,1,1);
859 return GetModuleIndex(3,1,1);
862 return GetModuleIndex(5,1,1);
865 Warning("GetStartDet","undefined detector type %d",dtype);
869 Warning("GetStartDet","undefined detector type %d",dtype);
872 //______________________________________________________________________
873 Int_t AliITSgeom::GetLastDet(Int_t dtype)const{
874 // returns the last module index value for a give type of detector id.
875 // This assumes that the detector types are different on different layers
876 // and that they are not mixed up.
878 // Int_t dtype A detector type number. 0 for SPD, 1 for SDD, and 2 for SSD.
881 // the module index for the last occurrence of that detector type.
883 switch((AliITSDetector)dtype){
885 return GetModuleIndex(3,1,1)-1;
888 return GetModuleIndex(5,1,1)-1;
891 return GetIndexMax()-1;
893 case kSSDp: case kSDDp: case kND:
895 Warning("GetLastDet","undefined detector type %d",dtype);
899 Warning("GetLastDet","undefined detector type %d",dtype);
902 //______________________________________________________________________
903 void AliITSgeom::PrintComparison(FILE *fp,AliITSgeom *other)const{
904 // This function was primarily created for diagnostic reasons. It
905 // print to a file pointed to by the file pointer fp the difference
906 // between two AliITSgeom classes. The format of the file is basically,
907 // define d? to be the difference between the same element of the two
908 // classes. For example dfrx = this->GetGeomMatrix(i)->frx
909 // - other->GetGeomMatrix(i)->frx.
910 // if(at least one of dfx0, dfy0, dfz0,dfrx,dfry,dfrz are non zero) then
911 // print layer ladder detector dfx0 dfy0 dfz0 dfrx dfry dfrz
912 // if(at least one of the 9 elements of dfr[] are non zero) then print
913 // layer ladder detector dfr[0] dfr[1] dfr[2]
914 // dfr[3] dfr[4] dfr[5]
915 // dfr[6] dfr[7] dfr[8]
916 // Only non zero values are printed to save space. The differences are
917 // typical written to a file because there are usually a lot of numbers
918 // printed out and it is usually easier to read them in some nice editor
919 // rather than zooming quickly past you on a screen. fprintf is used to
920 // do the printing. The fShapeIndex difference is not printed at this time.
922 // FILE *fp A file pointer to an opened file for writing in which
923 // the results of the comparison will be written.
924 // AliITSgeom *other The other AliITSgeom class to which this one is
930 Int_t i,j,idt[3],ido[3];
931 Double_t tt[3],to[3]; // translation
932 Double_t rt[3],ro[3]; // phi in radians
933 Double_t mt[3][3],mo[3][3]; // matrices
934 AliITSgeomMatrix *gt,*go;
937 for(i=0;i<this->fNmodules;i++){
938 gt = this->GetGeomMatrix(i);
939 go = other->GetGeomMatrix(i);
943 for(i=0;i<3;i++) t = t&&idt[i]!=ido[i];
944 if(t) fprintf(fp,"%4.4d %1.1d %2.2d %2.2d %1.1d %2.2d %2.2d\n",i,
945 idt[0],idt[1],idt[2],ido[0],ido[1],ido[2]);
946 gt->GetTranslation(tt);
947 go->GetTranslation(to);
951 for(i=0;i<3;i++) t = t&&tt[i]!=to[i];
952 if(t) fprintf(fp,"%1.1d %2.2d %2.2d dTrans=%f %f %f drot=%f %f %f\n",
953 idt[0],idt[1],idt[2],
954 tt[0]-to[0],tt[1]-to[1],tt[2]-to[2],
955 rt[0]-ro[0],rt[1]-ro[1],rt[2]-ro[2]);
959 for(i=0;i<3;i++)for(j=0;j<3;j++) t = mt[i][j] != mo[i][j];
961 fprintf(fp,"%1.1d %2.2d %2.2d dfr= %e %e %e\n",
962 idt[0],idt[1],idt[2],
963 mt[0][0]-mo[0][0],mt[0][1]-mo[0][1],mt[0][2]-mo[0][2]);
964 fprintf(fp," dfr= %e %e %e\n",
965 mt[1][0]-mo[1][0],mt[1][1]-mo[1][1],mt[1][2]-mo[1][2]);
966 fprintf(fp," dfr= %e %e %e\n",
967 mt[2][0]-mo[2][0],mt[2][1]-mo[2][1],mt[2][2]-mo[2][2]);
972 //______________________________________________________________________
973 void AliITSgeom::PrintData(FILE *fp,Int_t lay,Int_t lad,Int_t det)const{
974 // This function prints out the coordinate transformations for
975 // the particular detector defined by layer, ladder, and detector
976 // to the file pointed to by the File pointer fp. fprintf statements
977 // are used to print out the numbers. The format is
978 // layer ladder detector Trans= fx0 fy0 fz0 rot= frx fry frz
980 // dfr= fr[0] fr[1] fr[2]
981 // dfr= fr[3] fr[4] fr[5]
982 // dfr= fr[6] fr[7] fr[8]
983 // By indicating which detector, some control over the information
984 // is given to the user. The output it written to the file pointed
985 // to by the file pointer fp. This can be set to stdout if you want.
987 // FILE *fp A file pointer to an opened file for writing in which
988 // the results of the comparison will be written.
989 // Int_t lay The layer number. Starting from 1.
990 // Int_t lad The ladder number. Starting from 1.
991 // Int_t det The detector number. Starting from 1.
996 AliITSgeomMatrix *gt;
997 Double_t t[3],r[3],m[3][3];
999 gt = this->GetGeomMatrix(GetModuleIndex(lay,lad,det));
1000 gt->GetTranslation(t);
1002 fprintf(fp,"%1.1d %2.2d %2.2d Trans=%f %f %f rot=%f %f %f Shape=%d\n",
1003 lay,lad,det,t[0],t[1],t[2],r[0],r[1],r[2],
1004 gt->GetDetectorIndex());
1006 fprintf(fp," dfr= %e %e %e\n",m[0][0],m[0][1],m[0][2]);
1007 fprintf(fp," dfr= %e %e %e\n",m[1][0],m[1][1],m[1][2]);
1008 fprintf(fp," dfr= %e %e %e\n",m[2][0],m[2][1],m[2][2]);
1011 //______________________________________________________________________
1012 ofstream & AliITSgeom::PrintGeom(ofstream &rb)const{
1013 // Stream out an object of class AliITSgeom to standard output.
1015 // ofstream &rb The output streaming buffer.
1019 // ofstream &rb The output streaming buffer.
1022 rb.setf(ios::scientific);
1023 rb << fTrans << " ";
1024 rb << fNmodules << " ";
1025 rb << fNlayers << " ";
1026 for(i=0;i<fNlayers;i++) rb << fNlad[i] << " ";
1027 for(i=0;i<fNlayers;i++) rb << fNdet[i] << "\n";
1028 for(i=0;i<fNmodules;i++) {
1029 rb <<setprecision(16) << *(GetGeomMatrix(i)) << "\n";
1031 nshapes = fShape.GetEntries();
1032 rb << nshapes <<endl;
1033 for(i=0;i<nshapes;i++) if(fShape.At(i)!=0) switch (i){
1035 rb << kSPD <<","<< (AliITSgeomSPD*)(fShape.At(kSPD));
1038 rb << kSDD <<","<< (AliITSgeomSDD*)(fShape.At(kSDD));
1041 rb << kSSD <<","<< (AliITSgeomSSD*)(fShape.At(kSSD));
1044 rb << kSSDp <<","<< (AliITSgeomSSD*)(fShape.At(kSSDp));
1047 rb << kSDDp <<","<< (AliITSgeomSDD*)(fShape.At(kSDDp));
1049 } // end for i / switch
1052 //______________________________________________________________________
1053 ifstream & AliITSgeom::ReadGeom(ifstream &rb){
1054 // Stream in an object of class AliITSgeom from standard input.
1056 // ifstream &rb The input streaming buffer.
1060 // ifstream &rb The input streaming buffer.
1065 rb >> fTrans >> fNmodules >> fNlayers;
1066 fNlad.Set(fNlayers);
1067 fNdet.Set(fNlayers);
1068 for(i=0;i<fNlayers;i++) rb >> fNlad[i];
1069 for(i=0;i<fNlayers;i++) rb >> fNdet[i];
1070 fGm.Expand(fNmodules);
1071 fGm.SetOwner(kTRUE);
1072 for(i=0;i<fNmodules;i++){
1073 if(i<0||i>=fGm.GetSize()){
1074 Error("ReadGeom","i<0||i>=fGm.GetSize()=%d",
1078 fGm.AddAt(new AliITSgeomMatrix,i);
1079 rb >> *(GetGeomMatrix(i));
1083 fShape.SetOwner(kTRUE);
1084 for(i=0;i<fShape.GetEntries();i++) {
1088 AliITSgeomSPD *s = new AliITSgeomSPD();
1090 fShape.AddAt(s,kSPD);}
1093 AliITSgeomSDD *s = new AliITSgeomSDD();
1095 fShape.AddAt(s,kSDD);}
1098 AliITSgeomSSD *s = new AliITSgeomSSD();
1100 fShape.AddAt(s,kSSD);}
1103 AliITSgeomSSD *s = new AliITSgeomSSD();
1105 fShape.AddAt(s,kSSDp);}
1108 AliITSgeomSDD *s = new AliITSgeomSDD();
1110 fShape.AddAt(s,kSDDp);}
1116 //______________________________________________________________________
1117 // The following routines modify the transformation of "this"
1118 // geometry transformations in a number of different ways.
1119 //______________________________________________________________________
1120 void AliITSgeom::GlobalChange(const Float_t *tran,const Float_t *rot){
1121 // This function performs a Cartesian translation and rotation of
1122 // the full ITS from its default position by an amount determined by
1123 // the three element arrays tran and rot. If every element
1124 // of tran and rot are zero then there is no change made
1125 // the geometry. The change is global in that the exact same translation
1126 // and rotation is done to every detector element in the exact same way.
1127 // The units of the translation are those of the Monte Carlo, usually cm,
1128 // and those of the rotation are in radians. The elements of tran
1129 // are tran[0] = x, tran[1] = y, and tran[2] = z.
1130 // The elements of rot are rot[0] = rx, rot[1] = ry, and
1131 // rot[2] = rz. A change in x will move the hole ITS in the ALICE
1132 // global x direction, the same for a change in y. A change in z will
1133 // result in a translation of the ITS as a hole up or down the beam line.
1134 // A change in the angles will result in the inclination of the ITS with
1135 // respect to the beam line, except for an effective rotation about the
1136 // beam axis which will just rotate the ITS as a hole about the beam axis.
1138 // Float_t *tran A 3 element array representing the global translations.
1139 // the elements are x,y,z in cm.
1140 // Float_t *rot A 3 element array representing the global rotation
1141 // angles about the three axis x,y,z in radians
1148 AliITSgeomMatrix *g;
1150 fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
1151 for(i=0;i<fNmodules;i++){
1152 g = this->GetGeomMatrix(i);
1153 g->GetTranslation(t);
1159 g->SetTranslation(t);
1164 //______________________________________________________________________
1165 void AliITSgeom::GlobalCylindericalChange(const Float_t *tran,
1166 const Float_t *rot){
1167 // This function performs a cylindrical translation and rotation of
1168 // each ITS element by a fixed about in radius, rphi, and z from its
1169 // default position by an amount determined by the three element arrays
1170 // tran and rot. If every element of tran and
1171 // rot are zero then there is no change made the geometry. The
1172 // change is global in that the exact same distance change in translation
1173 // and rotation is done to every detector element in the exact same way.
1174 // The units of the translation are those of the Monte Carlo, usually cm,
1175 // and those of the rotation are in radians. The elements of tran
1176 // are tran[0] = r, tran[1] = rphi, and tran[2] = z.
1177 // The elements of rot are rot[0] = rx, rot[1] = ry, and
1178 // rot[2] = rz. A change in r will results in the increase of the
1179 // radius of each layer by the same about. A change in rphi will results in
1180 // the rotation of each layer by a different angle but by the same
1181 // circumferential distance. A change in z will result in a translation
1182 // of the ITS as a hole up or down the beam line. A change in the angles
1183 // will result in the inclination of the ITS with respect to the beam
1184 // line, except for an effective rotation about the beam axis which will
1185 // just rotate the ITS as a hole about the beam axis.
1187 // Float_t *tran A 3 element array representing the global translations.
1188 // the elements are r,theta,z in cm/radians.
1189 // Float_t *rot A 3 element array representing the global rotation
1190 // angles about the three axis x,y,z in radians
1196 Double_t t[3],ro[3],r,r0,phi,rphi;
1197 AliITSgeomMatrix *g;
1199 fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
1200 for(i=0;i<fNmodules;i++){
1201 g = this->GetGeomMatrix(i);
1202 g->GetTranslation(t);
1204 r = r0= TMath::Hypot(t[1],t[0]);
1205 phi = TMath::ATan2(t[1],t[0]);
1210 t[0] = r*TMath::Cos(phi);
1211 t[1] = r*TMath::Sin(phi);
1216 g->SetTranslation(t);
1221 //______________________________________________________________________
1222 void AliITSgeom::RandomChange(const Float_t *stran,const Float_t *srot){
1223 // This function performs a Gaussian random displacement and/or
1224 // rotation about the present global position of each active
1225 // volume/detector of the ITS. The sigma of the random displacement
1226 // is determined by the three element array stran, for the
1227 // x y and z translations, and the three element array srot,
1228 // for the three rotation about the axis x y and z.
1230 // Float_t *stran A 3 element array representing the global translations
1231 // variances. The elements are x,y,z in cm.
1232 // Float_t *srot A 3 element array representing the global rotation
1233 // angles variances about the three axis x,y,z in radians.
1240 AliITSgeomMatrix *g;
1242 fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
1243 for(i=0;i<fNmodules;i++){
1244 g = this->GetGeomMatrix(i);
1245 g->GetTranslation(t);
1248 t[j] += gRandom->Gaus(0.0,stran[j]);
1249 r[j] += gRandom->Gaus(0.0, srot[j]);
1251 g->SetTranslation(t);
1256 //______________________________________________________________________
1257 void AliITSgeom::RandomCylindericalChange(const Float_t *stran,
1258 const Float_t *srot){
1259 // This function performs a Gaussian random displacement and/or
1260 // rotation about the present global position of each active
1261 // volume/detector of the ITS. The sigma of the random displacement
1262 // is determined by the three element array stran, for the
1263 // r rphi and z translations, and the three element array srot,
1264 // for the three rotation about the axis x y and z. This random change
1265 // in detector position allow for the simulation of a random uncertainty
1266 // in the detector positions of the ITS.
1268 // Float_t *stran A 3 element array representing the global translations
1269 // variances. The elements are r,theta,z in cm/radians.
1270 // Float_t *srot A 3 element array representing the global rotation
1271 // angles variances about the three axis x,y,z in radians.
1277 Double_t t[3],ro[3],r,r0,phi,rphi;
1279 AliITSgeomMatrix *g;
1281 fTrans = (fTrans && 0xfffd) + 2; // set bit 1 true.
1282 for(i=0;i<fNmodules;i++){
1283 g = this->GetGeomMatrix(i);
1284 g->GetTranslation(t);
1286 r = r0= TMath::Hypot(t[1],t[0]);
1287 phi = TMath::ATan2(t[1],t[0]);
1289 r += ran.Gaus(0.0,stran[0]);
1290 rphi += ran.Gaus(0.0,stran[1]);
1292 t[0] = r*TMath::Cos(phi);
1293 t[1] = r*TMath::Sin(phi);
1294 t[2] += ran.Gaus(0.0,stran[2]);
1296 ro[j] += ran.Gaus(0.0, srot[j]);
1298 g->SetTranslation(t);
1303 //______________________________________________________________________
1304 void AliITSgeom::GeantToTracking(const AliITSgeom &source){
1305 // Copy the geometry data but change it to go between the ALICE
1306 // Global coordinate system to that used by the ITS tracking. A slightly
1307 // different coordinate system is used when tracking. This coordinate
1308 // system is only relevant when the geometry represents the cylindrical
1309 // ALICE ITS geometry. For tracking the Z axis is left alone but X-> -Y
1310 // and Y-> X such that X always points out of the ITS cylinder for every
1311 // layer including layer 1 (where the detectors are mounted upside down).
1314 <img src="picts/ITS/AliITSgeomMatrix_T1.gif">
1318 // AliITSgeom &source The AliITSgeom class with which to make this
1324 Int_t i,j,k,l,id[3];
1325 Double_t r0[3][3],r1[3][3];
1326 Double_t a0[3][3] = {{0.,+1.,0.},{-1.,0.,0.},{0.,0.,+1.}};
1327 Double_t a1[3][3] = {{0.,-1.,0.},{+1.,0.,0.},{0.,0.,+1.}};
1329 *this = source; // copy everything
1330 for(i=0;i<GetIndexMax();i++){
1331 GetGeomMatrix(i)->GetIndex(id);
1332 GetGeomMatrix(i)->GetMatrix(r0);
1333 if(id[0]==1){ // Layer 1 is treated different from the others.
1334 for(j=0;j<3;j++) for(k=0;k<3;k++){
1336 for(l=0;l<3;l++) r1[j][k] += a0[j][l]*r0[l][k];
1339 for(j=0;j<3;j++) for(k=0;k<3;k++){
1341 for(l=0;l<3;l++) r1[j][k] += a1[j][l]*r0[l][k];
1344 GetGeomMatrix(i)->SetMatrix(r1);
1346 this->fTrans = (this->fTrans && 0xfffe) + 1; // set bit 0 true.
1349 //______________________________________________________________________
1350 Int_t AliITSgeom::GetNearest(const Double_t g[3],Int_t lay)const{
1351 // Finds the Detector (Module) that is nearest the point g [cm] in
1352 // ALICE Global coordinates. If layer !=0 then the search is restricted
1353 // to Detectors (Modules) in that particular layer.
1355 // Double_t g[3] The ALICE Cartesian global coordinate from which the
1356 // distance is to be calculated with.
1357 // Int_t lay The layer to restrict the search to. If layer=0 then
1358 // all layers are searched. Default is lay=0.
1362 // The module number representing the nearest module.
1364 Double_t d,dn=1.0e10;
1365 Bool_t t=lay!=0; // skip if lay = 0 default value check all layers.
1367 for(i=0;i<fNmodules;i++){
1368 if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
1369 if((d=GetGeomMatrix(i)->Distance2(g))<dn){
1376 //______________________________________________________________________
1377 void AliITSgeom::GetNearest27(const Double_t g[3],Int_t n[27],Int_t lay)const{
1378 // Finds 27 Detectors (Modules) that are nearest the point g [cm] in
1379 // ALICE Global coordinates. If layer !=0 then the search is restricted
1380 // to Detectors (Modules) in that particular layer. The number 27 comes
1381 // from including the nearest detector and all those around it (up, down,
1382 // left, right, forwards, backwards, and the corners).
1384 // Double_t g[3] The ALICE Cartesian global coordinate from which the
1385 // distance is to be calculated with.
1386 // Int_t lay The layer to restrict the search to. If layer=0 then
1387 // all layers are searched. Default is lay=0.
1389 // Int_t n[27] The module number representing the nearest 27 modules
1393 Int_t i,l,a,e,in[27]={0,0,0,0,0,0,0,0,0,
1395 0,0,0,0,0,0,0,0,0,};
1396 Double_t d,dn[27]={1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
1397 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
1398 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
1399 1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,1.0e10,
1400 1.0e10,1.0e10,1.0e10};
1401 Bool_t t=(lay!=0); // skip if lay = 0 default value check all layers.
1403 for(i=0;i<fNmodules;i++){
1404 if(t){GetModuleId(i,l,a,e);if(l!=lay) continue;}
1406 d = GetGeomMatrix(i)->Distance2(g);
1408 for(e=26;e>a;e--){dn[e] = dn[e-1];in[e] = in[e-1];}
1409 dn[a] = d; in[a] = i;
1413 for(i=0;i<27;i++) n[i] = in[i];
1415 //----------------------------------------------------------------------
1416 Double_t AliITSgeom::GetAverageRadiusOfLayer(Int_t layer,Double_t &range)const{
1417 // Loops over all modules for a given layer and computes the
1418 // average cylindrical radius (about the z axis) and the range of
1419 // radii covered by this layer. Units, [cm] the Alice default unit.
1421 // Int_t layer The layer for which the average radii is to be found
1423 // Double_t &range The range of radii covered by this layer
1425 // The average radii for this layer.
1426 Double_t r=0.0,rmin=1.0e6,rmax=-1.0,rp,t[3],l[3],dl[3];
1427 Int_t n=0,i,j,lay,lad,det;
1428 AliITSDetector idet;
1430 for(i=0;i<GetIndexMax();i++) {
1431 GetModuleId(i,lay,lad,det);
1432 idet = GetModuleType(i);
1433 if(lay!=layer) continue;
1434 dl[0] = dl[1] = dl[2] = 0.0;
1435 if(IsShapeDefined((Int_t)idet)) {
1438 dl[0] = ((AliITSgeomSPD*)GetShape(idet))->GetDx();
1439 dl[1] = ((AliITSgeomSPD*)GetShape(idet))->GetDy();
1440 dl[2] = ((AliITSgeomSPD*)GetShape(idet))->GetDz();
1442 case kSDD: case kSDDp:{
1443 dl[0] = ((AliITSgeomSDD*)GetShape(idet))->GetDx();
1444 dl[1] = ((AliITSgeomSDD*)GetShape(idet))->GetDy();
1445 dl[2] = ((AliITSgeomSDD*)GetShape(idet))->GetDz();
1447 case kSSD: case kSSDp:{
1448 dl[0] = ((AliITSgeomSSD*)GetShape(idet))->GetDx();
1449 dl[1] = ((AliITSgeomSSD*)GetShape(idet))->GetDy();
1450 dl[2] = ((AliITSgeomSSD*)GetShape(idet))->GetDz();
1453 Warning("GetAverageRadiusOfLayer",
1454 "idet=kND undefined detector type");
1458 Warning("GetAverageRadiusOfLayer",
1459 "idet=%d not a defined value",(Int_t)idet);
1468 if(rmin>rp) rmin = rp;
1469 if(rmax<rp) rmax = rp;
1470 for(j=0;j<8;j++){ // loop over the corners
1471 l[0] = dl[0];if(j%2==0) l[0] = -dl[0];
1472 l[1] = dl[1];if(j==2||j==3||j==6||j==7) l[1] = -dl[1];
1473 l[2] = dl[2];if(j>3) l[2] = -dl[2];
1475 rp = TMath::Sqrt(t[0]*t[0]+t[1]*t[1]);
1476 if(rmin>rp) rmin = rp;
1477 if(rmax<rp) rmax = rp;
1481 range = TMath::Max(rmax-r,r-rmin);
1484 //_______________________________________________________________________
1485 void AliITSgeom::DetLToTrackingV2(Int_t md, Float_t xin, Float_t zin, Float_t &yout, Float_t &zout) {
1487 //Conversion from local coordinates on detectors to local
1488 //coordinates used for tracking ("v2")
1489 Float_t x,y,z; Double_t rt[9];GetTrans(md,x,y,z);GetRotMatrix(md,rt);
1490 Double_t al=TMath::ATan2(rt[1],rt[0])+TMath::Pi();
1491 yout=-(-xin+(x*TMath::Cos(al)+y*TMath::Sin(al)));
1492 if(md<(GetModuleIndex(2,1,1)-1))yout*=-1; zout=-zin+(Double_t)z;
1495 //_______________________________________________________________________
1496 void AliITSgeom::TrackingV2ToDetL(Int_t md,Float_t yin,Float_t zin,Float_t &xout,Float_t &zout) {
1497 //Conversion from local coordinates used for tracking ("v2") to
1498 //local detector coordinates
1500 Float_t x,y,z; Double_t rt[9];GetTrans(md,x,y,z);GetRotMatrix(md,rt);
1501 Double_t al=TMath::ATan2(rt[1],rt[0])+TMath::Pi();
1502 xout=yin;if(md<(GetModuleIndex(2,1,1)-1))xout=-xout;
1503 xout+=(x*TMath::Cos(al)+y*TMath::Sin(al));
1504 zout=-zin+(Double_t)z;