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Adding includes required by ROOT
[u/mrichter/AliRoot.git] / JETAN / AliJetGrid.cxx
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4a01bb2c 1/**************************************************************************
2 * Copyright(c) 2001-2002, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16/* $Id: AliJetGrid.cxx,v 1.0 07/09/2006 */
17
18//=========================================================================
19// *** 07 September 2006
20// This class allows to fill a really general grid in (eta,phi)
21// Two types of grid can be setted :
22// if fGrid==0 -> the complete acceptance of a rectangular detector acceptance is filled
23// if fGrid==1 -> the previous grid - an other rectangular detector acceptance is filled
24// A (eta,phi(rad)) position can be extracted from an index value without looping over all entries
25// An index position can be extracted from a (eta,phi(rad)) position without looping over all entries
26//
27// How to run it :
28// > AliJetGrid *grid = new AliJetGrid((NbinPhi-1),(NbinEta-1),PhiMin,PhiMax,EtaMin,EtaMax);
29// > grid->SetGridType(...); // 0 or 1 for the moment
30// > grid->SetMatrixIndexes();
31// > grid->SetIndexIJ();
32//
33// Author : magali.estienne@ires.in2p3.fr
34//=========================================================================
35
36// Standard headers
37#include <Riostream.h>
38// Root headers
37b09b91 39#include <TMath.h>
4a01bb2c 40#include <TMatrixD.h>
41#include <TArrayD.h>
42#include <TArrayI.h>
43// AliRoot headers
44#include "AliJetGrid.h"
45
87f40625 46ClassImp(AliJetGrid)
4a01bb2c 47
4a01bb2c 48
b92e2ccf 49//__________________________________________________________
50AliJetGrid::AliJetGrid():
51 fGrid(0),
52 fNphi(0),
53 fNeta(0),
54 fPhi(0),
55 fEta(0),
56 fIndex(0),
57 fIndexI(0),
58 fIndexJ(0),
59 fPhiMin(0),
60 fPhiMax(0),
61 fEtaMin(0),
62 fEtaMax(0),
63 fEtaBinInTPCAcc(0),
64 fPhiBinInTPCAcc(0),
65 fEtaBinInEMCalAcc(0),
66 fPhiBinInEMCalAcc(0),
67 fNbinEta(0),
68 fNbinPhi(0),
69 fMaxPhi(0),
70 fMinPhi(0),
71 fMaxEta(0),
72 fMinEta(0),
73 fDebug(1)
74 {
4a01bb2c 75 // Default constructor
4a01bb2c 76}
77
78//__________________________________________________________
b92e2ccf 79AliJetGrid::AliJetGrid(Int_t nphi,Int_t neta,Double_t phiMin,Double_t phiMax,Double_t etaMin,Double_t etaMax):
80 fGrid(0),
81 fNphi(nphi),
82 fNeta(neta),
83 fPhi(0),
84 fEta(0),
85 fIndex(0),
86 fIndexI(0),
87 fIndexJ(0),
88 fPhiMin(0),
89 fPhiMax(0),
90 fEtaMin(0),
91 fEtaMax(0),
92 fEtaBinInTPCAcc(0),
93 fPhiBinInTPCAcc(0),
94 fEtaBinInEMCalAcc(0),
95 fPhiBinInEMCalAcc(0),
96 fNbinEta(0),
97 fNbinPhi(0),
98 fMaxPhi(phiMax),
99 fMinPhi(phiMin),
100 fMaxEta(etaMax),
101 fMinEta(etaMin),
102 fDebug(1)
103 {
4a01bb2c 104 // Standard constructor
b92e2ccf 105 fPhi = new TArrayD(fNphi+1);
106 fEta = new TArrayD(fNeta+1);
4a01bb2c 107 fIndexI = new TArrayI((fNeta+1)*(fNphi+1)+1);
108 fIndexJ = new TArrayI((fNeta+1)*(fNphi+1)+1);
b92e2ccf 109
4a01bb2c 110 for(Int_t i=0; i<fNphi+1; i++) (*fPhi)[i] = (phiMax-phiMin)/fNphi*i+phiMin;
111 for(Int_t i=0; i<fNeta+1; i++) (*fEta)[i] = (etaMax-etaMin)/fNeta*i+etaMin;
b92e2ccf 112
4a01bb2c 113 if(fDebug > 3){
b92e2ccf 114 for(Int_t i=0; i<(fNphi+1); i++) cout << (*fPhi)[i] << endl;
115 for(Int_t i=0; i<(fNeta+1); i++) cout << (*fEta)[i] << endl;
4a01bb2c 116 }
b92e2ccf 117
4a01bb2c 118 fIndex = new TMatrixD(fNphi+1,fNeta+1);
b92e2ccf 119
4a01bb2c 120}
121
122//__________________________________________________________
123AliJetGrid::AliJetGrid(const AliJetGrid& grid):TNamed(grid) {
124
125 // Copy constructor
126
127 fNphi = grid.fNphi;
128 fNeta = grid.fNeta;
129 fPhiMin = grid.fPhiMin;
130 fPhiMax = grid.fPhiMax;
131 fEtaMin = grid.fEtaMin;
132 fEtaMax = grid.fEtaMax;
133 fEtaBinInTPCAcc = grid.fEtaBinInTPCAcc;
134 fPhiBinInTPCAcc = grid.fPhiBinInTPCAcc;
135 fEtaBinInEMCalAcc = grid.fEtaBinInEMCalAcc;
136 fPhiBinInEMCalAcc = grid.fPhiBinInEMCalAcc;
137 fNbinPhi = grid.fNbinPhi;
138 fMaxPhi = grid.fMaxPhi;
139 fMinPhi = grid.fMinPhi;
140 fMaxEta = grid.fMaxEta;
141 fMinEta = grid.fMinEta;
142
143 fPhi = new TArrayD(fNphi+1);
144 for(Int_t i=0; i<fNphi+1; i++) (*fPhi)[i] = grid.fPhi->At(i);
145 fEta = new TArrayD(fNeta+1);
146 for(Int_t i=0; i<fNeta+1; i++) (*fEta)[i] = grid.fEta->At(i);
147
148 fIndex = new TMatrixD(fNphi+1,fNeta+1);
149 for(Int_t i=0; i<fNphi+1; i++) {
150 for(Int_t j=0; j<fNeta+1; j++) (*fIndex)(i,j)=(*grid.fIndex)(i,j);
151 }
152}
153
154//__________________________________________________________
155AliJetGrid::~AliJetGrid() {
156
157 // Destructor
158 delete fPhi;
159 delete fEta;
160 delete fIndexI;
161 delete fIndexJ;
162 delete fIndex;
163}
164
165//__________________________________________________________
166void AliJetGrid::InitParams(Double_t phiMinCal,Double_t phiMaxCal,Double_t etaMinCal,Double_t etaMaxCal)
167{ // To set initial parameters
168
169 fPhiMin = phiMinCal; // rad
170 fPhiMax = phiMaxCal; // rad
171 fEtaMin = etaMinCal;
172 fEtaMax = etaMaxCal;
173 fNbinPhi = static_cast<int>(fPhiMin/(2*TMath::Pi()/fNphi));
174
175 // Define some binning numbers
176 if(fGrid==0){
177 for(Int_t i=0; i<fNphi+1; i++) fPhiBinInTPCAcc++;
178 fPhiBinInEMCalAcc = 0;
179
180 for(Int_t i=0; i<fNeta+1; i++) fEtaBinInTPCAcc++;
181 fEtaBinInEMCalAcc = 0;
182 }
183
184 if(fGrid==1){
185 for(Int_t i=0; i<fNphi+1; i++) {
186 fPhiBinInTPCAcc++;
187 if(fPhi->At(i) >= fPhiMin &&
188 fPhi->At(i) <= fPhiMax)
189 fPhiBinInEMCalAcc++;
190 }
191 for(Int_t i=0; i<fNeta+1; i++) {
192 fEtaBinInTPCAcc++;
193 if((fEta->At(i) >= fEtaMin) &&
194 (fEta->At(i) <= fEtaMax))
195 fEtaBinInEMCalAcc++;
196 }
197 }
198
199}
200
201//__________________________________________________________
202TArrayD* AliJetGrid::GetArrayEta()
203{ // Returns an array with the eta points
204
205 return fEta;
206
207}
208
209//__________________________________________________________
210TArrayD* AliJetGrid::GetArrayPhi()
211{ // Returns an array with the phi points
212
213 return fPhi;
214
215}
216
217//__________________________________________________________
218TMatrixD* AliJetGrid::GetIndexObject()
219{ // Returns a pointer to the matrix
220
221 return fIndex;
222
223}
224
225//__________________________________________________________
226void AliJetGrid::GetAccParam(Int_t &nphi, Int_t &neta, Float_t &minphi, Float_t &maxphi,
227 Float_t &mineta, Float_t &maxeta)
228{ // Returns EMCAL acceptance initially setted
229
230 nphi = fNphi;
231 neta = fNeta;
232 minphi = fPhiMin;
233 maxphi = fPhiMax;
234 mineta = fEtaMin;
235 maxeta = fEtaMax;
236}
237
238//__________________________________________________________
239void AliJetGrid::GetBinParam(Int_t &phibintpc, Int_t &etabintpc,
240 Int_t &phibinemc, Int_t &etabinemc, Int_t &nbinphi)
241{ // Returns number of bins in TPC and EMCAL geometry
242
243 etabintpc = fEtaBinInTPCAcc;
244 phibintpc = fPhiBinInTPCAcc;
245 etabinemc = fEtaBinInEMCalAcc;
246 phibinemc = fPhiBinInEMCalAcc;
247 nbinphi = fNbinPhi;
248}
249
250//__________________________________________________________
251Int_t AliJetGrid::GetIndexFromEtaPhi(Double_t phi,Double_t eta) const
252{ // Tells the index value of a corresponding (eta,phi) real position
253 // Loop over all entries -> takes time.
254 // Used one time at the begining to fill the grids
255
256 /* this is how bins are numbered
257
258 in all TPC or in TPC - EMCAL
259 ... ... ... ..
260 ---------------
261 ... ... . 10 | | | 11
262 ---+---+--- ---------------
263 ^ 6 | 7 | 8 or 8 | | | 9
264 | ---+---+--- ---------------
265 3 | 4 | 5 4 | 5 | 6 | 7
266 phi ---+---+--- ---------------
267 0 | 1 | 2 0 | 1 | 2 | 3
268
269
270 eta ->
271 */
272
273 Int_t etaBin=0,phiBin=0,absID=0;
274 Int_t etaBin2=0,etaBin3=0;
275
276 // Fill all the grid in eta/phi (all TPC acceptance)
277 //-----------------------------------------------------
278 if(fGrid==0){
279 if(eta <= fEta->At(0)) {
280 etaBin = 0;
281 } else if(eta >= fEta->At(fNeta)) {
282 etaBin = fNeta;
283 } else {
284 for(Int_t i=0; i<fNeta+1; i++) {
285 if(eta < fEta->At(i)) {
286 etaBin = i-1;
287 break;
288 }
289 }
290 }
291 if(phi <= fPhi->At(0)) {
292 phiBin = 0;
293 } else if(phi >= fPhi->At(fNphi)) {
294 phiBin = fNphi;
295 } else {
296 for(Int_t i=0; i<fNphi+1; i++) {
297 if(phi < fPhi->At(i)) {
298 phiBin = i-1;
299 break;
300 }
301 }
302 }
303
304 // Calculate absolute id
305 absID = phiBin*(fNeta+1) + etaBin;
306
307 }
308
309 // Fill the grid but do not count id in EMCal acceptance
310 //------------------------------------------------------
311 if((eta >= fEtaMin && eta <= fEtaMax) &&
312 (phi >= fPhiMin && phi <= fPhiMax)){
313 etaBin = etaBin2 = etaBin3 = -1;
314 phiBin = -1;
315 }
316
317 if(fGrid == 1){
318 if(phi<fPhiMin) {
319 if(eta <= fEta->At(0)) {
320 etaBin = 0;
321 } else if(eta >= fEta->At(fNeta)) {
322 etaBin = fNeta;
323 } else {
324 for(Int_t i=0; i<fNeta+1; i++) {
325 if(eta < fEta->At(i)) {
326 etaBin = i-1;
327 break;
328 }
329 }
330 }
331 }
332 else {
333 if((phi>=fPhiMin) && (phi<=fPhiMax)) {
334 if(eta <= fEta->At(0)) {
335 etaBin2 = 0;
336 } else if(eta >= fEta->At(fNeta)) {
337 etaBin2 = fNeta-fEtaBinInEMCalAcc;
338 } else {
339 for(Int_t i=0; i<fNeta+1; i++) {
340 if(eta < fEta->At(i) && ((fEta->At(0)<eta && eta<fEtaMin) ||
341 (fEtaMax<eta && eta<fEta->At(fNeta)))) {
342 // cout << "i : " << i << endl;
343 if(eta<fEtaMin)
344 etaBin2 = i-1;
345 else etaBin2 = i-1-fEtaBinInEMCalAcc;
346 break;
347 }
348 }
349 }
350 }
351 else {
352 if(eta <= fEta->At(0)) {
353 etaBin3 = 0;
354 } else if(eta >= fEta->At(fNeta)) {
355 etaBin3 = fNeta;
356 } else {
357 for(Int_t i=0; i<fNeta+1; i++) {
358 if(eta < fEta->At(i)) {
359 etaBin3 = i-1;
360 break;
361 }
362 }
363 }
364 }
365 }
366
367 if(phi <= fPhi->At(0)) {
368 phiBin = 0;
369 } else if(phi >= fPhi->At(fNphi)) {
370 phiBin = fNphi;
371 } else {
372 for(Int_t i=0; i<fNphi+1; i++) {
373 if(phi < fPhi->At(i)) {
374 phiBin = i-1;
375 break;
376 }
377 }
378 }
379
380 // Calculate absID
381 //-------------------------------------------------------
382 if(phi<fPhiMin)
383 absID = phiBin*(fNeta+1) + etaBin;
384 if(phi>=fPhiMin && phi<=fPhiMax) {
385 if(eta >= fEtaMin && eta <= fEtaMax) absID = -1;
386 else{
387 absID = (fNbinPhi+1)*(fNeta+1)
388 + (phiBin-fNbinPhi-1)*((fEtaBinInTPCAcc-fEtaBinInEMCalAcc))
389 + etaBin2;
390 }
391 }
392 if(phi>fPhiMax)
393 absID = (fNbinPhi+1)*(fNeta+1)
394 + fPhiBinInEMCalAcc*((fEtaBinInTPCAcc-fEtaBinInEMCalAcc))
395 + (phiBin-(fNbinPhi+1+fPhiBinInEMCalAcc))*(fNeta+1)
396 + etaBin3;
397
398 } // END OPTION==1
399
400 return absID;
401
402}
403
404//__________________________________________________________
405void AliJetGrid::GetEtaPhiFromIndex(Int_t index, Float_t &eta, Float_t &phi)
406{ // Get (eta,phi) position for a given index BUT loop over all entries (takes time)
407
408 for(Int_t j=0; j<fNphi+1; j++) {
409 for(Int_t i=0; i<fNeta+1; i++) {
410
411 // TPC grid only
412 //-------------------------------------
413 if(fGrid==0) {
414 if(j*(fNeta+1)+i == index) {
415 eta = fEta->At(i);
416 phi = fPhi->At(j);
417 }
418 }
419
420 // TPC-EMCAL grid
421 //-------------------------------------
422 Int_t ii = 0;
423 if(i==0) ii = 0;
424 if(i>0 && i<(fEtaBinInTPCAcc-fEtaBinInEMCalAcc)/2) ii = i;
425 if(i>=(fEtaBinInTPCAcc+fEtaBinInEMCalAcc)/2 && i<fNeta+1) ii = i-fEtaBinInEMCalAcc;
426
427 if(fGrid==1) {
428 if(j<(fNbinPhi+1) && j*(fNeta+1)+i == index) {
429 eta = fEta->At(i);
430 phi = fPhi->At(j);
431 }
432
433 if((j>=(fNbinPhi+1) && j<(fNbinPhi+1+fPhiBinInEMCalAcc)) &&
434 ((fNbinPhi+1)*(fNeta+1) + (j-fNbinPhi-1)*(fEtaBinInTPCAcc-fEtaBinInEMCalAcc) + ii)== index ) {
435 if(ii==0) {Int_t ind = 0; eta = fEta->At(ind);}
436 else eta = fEta->At(i);
437 phi = fPhi->At(j);
438 }
439
440 if(j>=(fNbinPhi+1+fPhiBinInEMCalAcc) &&
441 ((fNbinPhi+1)*(fNeta+1)+fPhiBinInEMCalAcc*((fEtaBinInTPCAcc-fEtaBinInEMCalAcc))
442 +(j-(fNbinPhi+1+fPhiBinInEMCalAcc))*(fNeta+1)+i == index)) {
443 eta = fEta->At(i);
444 phi = fPhi->At(j);
445 }
446 }
447 }
448 }
449}
450
451//__________________________________________________________
452Int_t AliJetGrid::GetIndex(Double_t phi, Double_t eta)
453{ // Get index value for a (eta,phi) position - Direct value
454
455 Int_t ieta = GetIndexJFromEta(eta);
456 Int_t iphi = GetIndexIFromPhi(phi);
457
458 Int_t index = GetMatrixIndex(iphi,ieta);
459
460 if(fDebug>10){
461 cout << "(phi,eta) : " << phi << ", " << eta << endl;
462 cout << "index : " << index << endl;
463 }
464 return index;
465
466}
467
468//__________________________________________________________
469Int_t AliJetGrid::GetIndexJFromEta(Double_t eta)
470{ // Get eta id
471 // Eta discretized
472
473 Int_t idEta =0;
474 Double_t temp = (eta+fMaxEta)/(fMaxEta-fMinEta)*fNeta;
475 if(fDebug>20)
476 {
477 cout << "eta : " << eta << endl;
478 cout << "fMaxEta : " << fMaxEta << endl;
479 cout << "fMinEta : " << fMinEta << endl;
480 cout << "fNeta : " << fNeta << endl;
481 cout << "temp eta before cast : " << temp << endl;
482 }
483 idEta = static_cast<Int_t>(temp+0.5);
484 if(fDebug>20) cout << "temp eta after cast : " << idEta << endl;
485 return idEta;
486}
487//__________________________________________________________
488Int_t AliJetGrid::GetIndexIFromPhi(Double_t phi)
489{ // Get phi id
490 // Phi discretized
491
492 Int_t idPhi = 0;
493 Double_t temp = 0.;
494 if(fMinPhi==0) temp = phi/(fMaxPhi-fMinPhi)*fNphi;
495 else temp = (phi-fMinPhi)/(fMaxPhi-fMinPhi)*fNphi;
496
497 if(fDebug>20)
498 {
499 cout << "phi : " << phi << endl;
500 cout << "fMaxPhi : " << fMaxPhi << endl;
501 cout << "fMinPhi : " << fMinPhi << endl;
502 cout << "fNphi : " << fNphi << endl;
503 cout << "temp phi before cast : " << temp << endl;
504 }
505 idPhi = static_cast<Int_t>(temp+0.5);
506 if(fDebug>20) cout << "temp phi after cast : " << idPhi << endl;
507 return idPhi;
508
509
510}
511
512//__________________________________________________________
513void AliJetGrid::SetMatrixIndex(Int_t i,Double_t par)
514{ // Allows to set parameters using only one index (if fGrid==0) !!
515 // Not used !
516
517 Int_t iphi = (Int_t)i/fNeta;
518 Int_t ieta = i-iphi*fNeta;
519 SetMatrixIndex(iphi,ieta,par);
520
521 return;
522}
523
524//__________________________________________________________
525void AliJetGrid::SetMatrixIndexes()
526{ // Fill the final matrix object with the corresponding index in eta/phi
527
528 for(Int_t i=0; i<fNphi+1; i++){
529 for(Int_t j=0; j<fNeta+1; j++){
530 (*fIndex)(i,j) = GetIndexFromEtaPhi(fPhi->At(i),fEta->At(j))+1;
531 if(fDebug>2){
532 cout << "(*fIndex)(" << i << "," << j << ") : " << (*fIndex)(i,j) <<
533 ", phi : " << fPhi->At(i) << ", eta : " << fEta->At(j) << endl;
534 }
535 }
536 }
537 printf("##########################################################\n");
538 printf("TMatrix object filled !\n");
539 printf("Size of the object : phi x eta = (fNphi+1) x (fNeta+1) = %d\n",(fNphi+1)*(fNeta+1));
540 printf("##########################################################\n");
541}
542
543//__________________________________________________________
544void AliJetGrid::SetIndexIJ()
545{ //
546
547 for(Int_t i=0; i<fNphi+1; i++){
548 for(Int_t j=0; j<fNeta+1; j++){
549 Int_t id = static_cast<Int_t>((*fIndex)(i,j));
550
551 if(id!=-1)
552 {
553 (*fIndexI)[id] = i;
554 (*fIndexJ)[id] = j;
555 }
556 }
557 }
558
559 printf("##########################################################\n");
560 printf(" In SetIndexIJ - Grid indexes setted !\n");
561 printf("##########################################################\n");
562}
563
564//__________________________________________________________
565void AliJetGrid::GetIJFromIndex(Int_t index, Int_t i, Int_t j)
566{ // returns i position id of eta and j position id of phi for a given grid index
567 i = (*fIndexI)[index];
568 j = (*fIndexJ)[index];
569}
570
571//__________________________________________________________
572void AliJetGrid::GetEtaPhiFromIndex2(Int_t index, Float_t &phi, Float_t &eta)
573{ // returns eta, phi values for a given grid index
574
575 phi = fPhi->At((*fIndexI)[index]);
576 eta = fEta->At((*fIndexJ)[index]);
577}
578
579//__________________________________________________________
580Int_t AliJetGrid::GetNEntries()
581{ // Returns the number of entries of the grid
582
583 if(fDebug>20){
584 cout << "fMaxPhi : " << fMaxPhi << endl;
585 cout << "fMaxEta : " << fMaxEta << endl;
586 }
587
588 Int_t indexNum = GetIndex(fMaxPhi,fMaxEta);
589 if(fDebug>20) cout << "indexNum : " << indexNum << endl;
590 return indexNum;
591
592}
593
594//__________________________________________________________
595Int_t AliJetGrid::GetNEntries2()
596{ // Returns the number of entries of the grid
597
598 Int_t indexNum = GetIndex(fMaxPhi-1.,fMaxEta-0.5);
599 if(fDebug>20) cout << "indexNum : " << indexNum << endl;
600 return indexNum;
601
602}
603
604
605
606
607
608