1 /**************************************************************************
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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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12 * about the suitability of this software for any purpose. It is *
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14 **************************************************************************/
16 /* $Id: AliJetGrid.cxx,v 1.0 07/09/2006 */
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
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();
33 // Author : magali.estienne@ires.in2p3.fr
34 //=========================================================================
37 #include <Riostream.h>
44 #include "AliJetGrid.h"
49 //__________________________________________________________
50 AliJetGrid::AliJetGrid():
75 // Default constructor
78 //__________________________________________________________
79 AliJetGrid::AliJetGrid(Int_t nphi,Int_t neta,Double_t phiMin,Double_t phiMax,Double_t etaMin,Double_t etaMax):
104 // Standard constructor
105 fPhi = new TArrayD(fNphi+1);
106 fEta = new TArrayD(fNeta+1);
107 fIndexI = new TArrayI((fNeta+1)*(fNphi+1)+1);
108 fIndexJ = new TArrayI((fNeta+1)*(fNphi+1)+1);
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;
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;
118 fIndex = new TMatrixD(fNphi+1,fNeta+1);
122 //__________________________________________________________
123 AliJetGrid::AliJetGrid(const AliJetGrid& grid):TNamed(grid) {
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;
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);
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);
154 //__________________________________________________________
155 AliJetGrid::~AliJetGrid() {
165 //__________________________________________________________
166 void AliJetGrid::InitParams(Double_t phiMinCal,Double_t phiMaxCal,Double_t etaMinCal,Double_t etaMaxCal)
168 // To set initial parameters
170 fPhiMin = phiMinCal; // rad
171 fPhiMax = phiMaxCal; // rad
174 fNbinPhi = static_cast<int>(fPhiMin/(2*TMath::Pi()/fNphi));
176 // Define some binning numbers
178 for(Int_t i=0; i<fNphi+1; i++) fPhiBinInTPCAcc++;
179 fPhiBinInEMCalAcc = 0;
181 for(Int_t i=0; i<fNeta+1; i++) fEtaBinInTPCAcc++;
182 fEtaBinInEMCalAcc = 0;
186 for(Int_t i=0; i<fNphi+1; i++) {
188 if(fPhi->At(i) >= fPhiMin &&
189 fPhi->At(i) <= fPhiMax)
192 for(Int_t i=0; i<fNeta+1; i++) {
194 if((fEta->At(i) >= fEtaMin) &&
195 (fEta->At(i) <= fEtaMax))
202 //__________________________________________________________
203 TArrayD* AliJetGrid::GetArrayEta()
205 // Returns an array with the eta points
211 //__________________________________________________________
212 TArrayD* AliJetGrid::GetArrayPhi()
214 // Returns an array with the phi points
220 //__________________________________________________________
221 TMatrixD* AliJetGrid::GetIndexObject()
223 // Returns a pointer to the matrix
229 //__________________________________________________________
230 void AliJetGrid::GetAccParam(Int_t &nphi, Int_t &neta, Float_t &minphi, Float_t &maxphi,
231 Float_t &mineta, Float_t &maxeta) const
233 // Returns EMCAL acceptance initially setted
243 //__________________________________________________________
244 void AliJetGrid::GetBinParam(Int_t &phibintpc, Int_t &etabintpc,
245 Int_t &phibinemc, Int_t &etabinemc, Int_t &nbinphi) const
247 // Returns number of bins in TPC and EMCAL geometry
249 etabintpc = fEtaBinInTPCAcc;
250 phibintpc = fPhiBinInTPCAcc;
251 etabinemc = fEtaBinInEMCalAcc;
252 phibinemc = fPhiBinInEMCalAcc;
256 //__________________________________________________________
257 Int_t AliJetGrid::GetIndexFromEtaPhi(Double_t phi,Double_t eta) const
259 // Tells the index value of a corresponding (eta,phi) real position
260 // Loop over all entries -> takes time.
261 // Used one time at the begining to fill the grids
263 /* this is how bins are numbered
265 in all TPC or in TPC - EMCAL
268 ... ... . 10 | | | 11
269 ---+---+--- ---------------
270 ^ 6 | 7 | 8 or 8 | | | 9
271 | ---+---+--- ---------------
272 3 | 4 | 5 4 | 5 | 6 | 7
273 phi ---+---+--- ---------------
274 0 | 1 | 2 0 | 1 | 2 | 3
280 Int_t etaBin=0,phiBin=0,absID=0;
281 Int_t etaBin2=0,etaBin3=0;
283 // Fill all the grid in eta/phi (all TPC acceptance)
284 //-----------------------------------------------------
286 if(eta <= fEta->At(0)) {
288 } else if(eta >= fEta->At(fNeta)) {
291 for(Int_t i=0; i<fNeta+1; i++) {
292 if(eta < fEta->At(i)) {
298 if(phi <= fPhi->At(0)) {
300 } else if(phi >= fPhi->At(fNphi)) {
303 for(Int_t i=0; i<fNphi+1; i++) {
304 if(phi < fPhi->At(i)) {
311 // Calculate absolute id
312 absID = phiBin*(fNeta+1) + etaBin;
316 // Fill the grid but do not count id in EMCal acceptance
317 //------------------------------------------------------
318 if((eta >= fEtaMin && eta <= fEtaMax) &&
319 (phi >= fPhiMin && phi <= fPhiMax)){
320 etaBin = etaBin2 = etaBin3 = -1;
326 if(eta <= fEta->At(0)) {
328 } else if(eta >= fEta->At(fNeta)) {
331 for(Int_t i=0; i<fNeta+1; i++) {
332 if(eta < fEta->At(i)) {
340 if((phi>=fPhiMin) && (phi<=fPhiMax)) {
341 if(eta <= fEta->At(0)) {
343 } else if(eta >= fEta->At(fNeta)) {
344 etaBin2 = fNeta-fEtaBinInEMCalAcc;
346 for(Int_t i=0; i<fNeta+1; i++) {
347 if(eta < fEta->At(i) && ((fEta->At(0)<eta && eta<fEtaMin) ||
348 (fEtaMax<eta && eta<fEta->At(fNeta)))) {
349 // cout << "i : " << i << endl;
352 else etaBin2 = i-1-fEtaBinInEMCalAcc;
359 if(eta <= fEta->At(0)) {
361 } else if(eta >= fEta->At(fNeta)) {
364 for(Int_t i=0; i<fNeta+1; i++) {
365 if(eta < fEta->At(i)) {
374 if(phi <= fPhi->At(0)) {
376 } else if(phi >= fPhi->At(fNphi)) {
379 for(Int_t i=0; i<fNphi+1; i++) {
380 if(phi < fPhi->At(i)) {
388 //-------------------------------------------------------
390 absID = phiBin*(fNeta+1) + etaBin;
391 if(phi>=fPhiMin && phi<=fPhiMax) {
392 if(eta >= fEtaMin && eta <= fEtaMax) absID = -1;
394 absID = (fNbinPhi+1)*(fNeta+1)
395 + (phiBin-fNbinPhi-1)*((fEtaBinInTPCAcc-fEtaBinInEMCalAcc))
400 absID = (fNbinPhi+1)*(fNeta+1)
401 + fPhiBinInEMCalAcc*((fEtaBinInTPCAcc-fEtaBinInEMCalAcc))
402 + (phiBin-(fNbinPhi+1+fPhiBinInEMCalAcc))*(fNeta+1)
411 //__________________________________________________________
412 void AliJetGrid::GetEtaPhiFromIndex(Int_t index, Float_t &eta, Float_t &phi)
414 // Get (eta,phi) position for a given index BUT loop over all entries (takes time)
416 for(Int_t j=0; j<fNphi+1; j++) {
417 for(Int_t i=0; i<fNeta+1; i++) {
420 //-------------------------------------
422 if(j*(fNeta+1)+i == index) {
429 //-------------------------------------
432 if(i>0 && i<(fEtaBinInTPCAcc-fEtaBinInEMCalAcc)/2) ii = i;
433 if(i>=(fEtaBinInTPCAcc+fEtaBinInEMCalAcc)/2 && i<fNeta+1) ii = i-fEtaBinInEMCalAcc;
436 if(j<(fNbinPhi+1) && j*(fNeta+1)+i == index) {
441 if((j>=(fNbinPhi+1) && j<(fNbinPhi+1+fPhiBinInEMCalAcc)) &&
442 ((fNbinPhi+1)*(fNeta+1) + (j-fNbinPhi-1)*(fEtaBinInTPCAcc-fEtaBinInEMCalAcc) + ii)== index ) {
443 if(ii==0) {Int_t ind = 0; eta = fEta->At(ind);}
444 else eta = fEta->At(i);
448 if(j>=(fNbinPhi+1+fPhiBinInEMCalAcc) &&
449 ((fNbinPhi+1)*(fNeta+1)+fPhiBinInEMCalAcc*((fEtaBinInTPCAcc-fEtaBinInEMCalAcc))
450 +(j-(fNbinPhi+1+fPhiBinInEMCalAcc))*(fNeta+1)+i == index)) {
459 //__________________________________________________________
460 Int_t AliJetGrid::GetIndex(Double_t phi, Double_t eta)
462 // Get index value for a (eta,phi) position - Direct value
464 Int_t ieta = GetIndexJFromEta(eta);
465 Int_t iphi = GetIndexIFromPhi(phi);
467 Int_t index = GetMatrixIndex(iphi,ieta);
470 cout << "(phi,eta) : " << phi << ", " << eta << endl;
471 cout << "index : " << index << endl;
477 //__________________________________________________________
478 Int_t AliJetGrid::GetIndexJFromEta(Double_t eta)
484 Double_t temp = (eta+fMaxEta)/(fMaxEta-fMinEta)*fNeta;
487 cout << "eta : " << eta << endl;
488 cout << "fMaxEta : " << fMaxEta << endl;
489 cout << "fMinEta : " << fMinEta << endl;
490 cout << "fNeta : " << fNeta << endl;
491 cout << "temp eta before cast : " << temp << endl;
493 idEta = static_cast<Int_t>(temp+0.5);
494 if(fDebug>20) cout << "temp eta after cast : " << idEta << endl;
497 //__________________________________________________________
498 Int_t AliJetGrid::GetIndexIFromPhi(Double_t phi)
505 if(fMinPhi==0) temp = phi/(fMaxPhi-fMinPhi)*fNphi;
506 else temp = (phi-fMinPhi)/(fMaxPhi-fMinPhi)*fNphi;
510 cout << "phi : " << phi << endl;
511 cout << "fMaxPhi : " << fMaxPhi << endl;
512 cout << "fMinPhi : " << fMinPhi << endl;
513 cout << "fNphi : " << fNphi << endl;
514 cout << "temp phi before cast : " << temp << endl;
516 idPhi = static_cast<Int_t>(temp+0.5);
517 if(fDebug>20) cout << "temp phi after cast : " << idPhi << endl;
523 //__________________________________________________________
524 void AliJetGrid::SetMatrixIndex(Int_t i,Double_t par)
526 // Allows to set parameters using only one index (if fGrid==0) !!
529 Int_t iphi = (Int_t)i/fNeta;
530 Int_t ieta = i-iphi*fNeta;
531 SetMatrixIndex(iphi,ieta,par);
536 //__________________________________________________________
537 void AliJetGrid::SetMatrixIndexes()
539 // Fill the final matrix object with the corresponding index in eta/phi
541 for(Int_t i=0; i<fNphi+1; i++){
542 for(Int_t j=0; j<fNeta+1; j++){
543 (*fIndex)(i,j) = GetIndexFromEtaPhi(fPhi->At(i),fEta->At(j))+1;
545 cout << "(*fIndex)(" << i << "," << j << ") : " << (*fIndex)(i,j) <<
546 ", phi : " << fPhi->At(i) << ", eta : " << fEta->At(j) << endl;
550 printf("##########################################################\n");
551 printf("TMatrix object filled !\n");
552 printf("Size of the object : phi x eta = (fNphi+1) x (fNeta+1) = %d\n",(fNphi+1)*(fNeta+1));
553 printf("##########################################################\n");
556 //__________________________________________________________
557 void AliJetGrid::SetIndexIJ()
559 // Set the grid index
561 for(Int_t i=0; i<fNphi+1; i++){
562 for(Int_t j=0; j<fNeta+1; j++){
563 Int_t id = static_cast<Int_t>((*fIndex)(i,j));
573 printf("##########################################################\n");
574 printf(" In SetIndexIJ - Grid indexes setted !\n");
575 printf("##########################################################\n");
578 //__________________________________________________________
579 void AliJetGrid::GetIJFromIndex(Int_t index, Int_t i, Int_t j) const
581 // Returns i position id of eta and j position id of phi for a given grid index
582 i = (*fIndexI)[index];
583 j = (*fIndexJ)[index];
586 //__________________________________________________________
587 void AliJetGrid::GetEtaPhiFromIndex2(Int_t index, Float_t &phi, Float_t &eta)
589 // Returns eta, phi values for a given grid index
591 phi = fPhi->At((*fIndexI)[index]);
592 eta = fEta->At((*fIndexJ)[index]);
595 //__________________________________________________________
596 Int_t AliJetGrid::GetNEntries()
598 // Returns the number of entries of the grid
601 cout << "fMaxPhi : " << fMaxPhi << endl;
602 cout << "fMaxEta : " << fMaxEta << endl;
605 Int_t indexNum = GetIndex(fMaxPhi,fMaxEta);
606 if(fDebug>20) cout << "indexNum : " << indexNum << endl;
611 //__________________________________________________________
612 Int_t AliJetGrid::GetNEntries2()
614 // Returns the number of entries of the grid
616 Int_t indexNum = GetIndex(fMaxPhi-1.,fMaxEta-0.5);
617 if(fDebug>20) cout << "indexNum : " << indexNum << endl;