Coding rule violations corrected.
[u/mrichter/AliRoot.git] / PHOS / AliPHOSCpvRecPoint.cxx
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458282ff 1/**************************************************************************
2 * Copyright(c) 1998-1999, 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/* $Id$ */
17
18//_________________________________________________________________________
19// RecPoint implementation for PHOS-CPV
20// An CpvRecPoint is a cluster of digits
a3dfe79c 21//*-- Author: Yuri Kharlov
22// (after Dmitri Peressounko (RRC KI & SUBATECH))
23// 30 October 2000
458282ff 24
25// --- ROOT system ---
26#include "TPad.h"
27#include "TH2.h"
28#include "TMath.h"
29#include "TCanvas.h"
b5241d61 30#include "TClonesArray.h"
458282ff 31
32// --- Standard library ---
33
458282ff 34// --- AliRoot header files ---
35
458282ff 36#include "AliPHOSCpvRecPoint.h"
88cb7938 37#include "AliPHOSLoader.h"
458282ff 38ClassImp(AliPHOSCpvRecPoint)
39
40//____________________________________________________________________________
b5241d61 41AliPHOSCpvRecPoint::AliPHOSCpvRecPoint() : AliPHOSEmcRecPoint()
458282ff 42{
43 // ctor
44
458282ff 45 fLengX = -1;
46 fLengZ = -1;
47}
48
49//____________________________________________________________________________
73a68ccb 50AliPHOSCpvRecPoint::AliPHOSCpvRecPoint(const char * opt) : AliPHOSEmcRecPoint(opt)
51{
52 // ctor
53
54 fLengX = -1;
55 fLengZ = -1;
56 }
57
58//____________________________________________________________________________
458282ff 59AliPHOSCpvRecPoint::~AliPHOSCpvRecPoint()
60{
61 // dtor
458282ff 62}
63
458282ff 64//____________________________________________________________________________
ad8cfaf4 65Bool_t AliPHOSCpvRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const
458282ff 66{
67 // Tells if (true) or not (false) two digits are neighbors)
68
69 Bool_t aren = kFALSE ;
70
88cb7938 71 AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry();
ed652fe0 72
458282ff 73 Int_t relid1[4] ;
74 phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
75
76 Int_t relid2[4] ;
77 phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
78
79 Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ;
80 Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ;
81
82 if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0))
83 aren = kTRUE ;
84
85 return aren ;
86}
87
88//____________________________________________________________________________
2a941f4e 89Int_t AliPHOSCpvRecPoint::Compare(const TObject * obj) const
458282ff 90{
91 // Compares two RecPoints according to their position in the PHOS modules
92
b5241d61 93 Float_t delta = 1 ; //Width of "Sorting row". If you changibg this
94 //value (what is senseless) change as vell delta in
95 //AliPHOSTrackSegmentMakerv* and other RecPoints...
96
458282ff 97 Int_t rv ;
98
9688c1dd 99 AliPHOSCpvRecPoint * clu = (AliPHOSCpvRecPoint *) obj ;
100
101 Int_t phosmod1 = GetPHOSMod() ;
102 Int_t phosmod2 = clu->GetPHOSMod() ;
103
104 TVector3 locpos1;
105 GetLocalPosition(locpos1) ;
106 TVector3 locpos2;
107 clu->GetLocalPosition(locpos2) ;
108
109 if(phosmod1 == phosmod2 ) {
110 Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/delta)-(Int_t)TMath::Ceil(locpos2.X()/delta) ;
111 if (rowdif> 0)
112 rv = 1 ;
113 else if(rowdif < 0)
114 rv = -1 ;
115 else if(locpos1.Z()>locpos2.Z())
116 rv = -1 ;
117 else
118 rv = 1 ;
119 }
120
121 else {
122 if(phosmod1 < phosmod2 )
123 rv = -1 ;
124 else
125 rv = 1 ;
126 }
127
128 return rv ;
129
458282ff 130}
131
132//______________________________________________________________________________
8f2a3661 133void AliPHOSCpvRecPoint::ExecuteEvent(Int_t, Int_t, Int_t ) const
458282ff 134{
b5241d61 135// // Execute action corresponding to one event
136// // This member function is called when a AliPHOSRecPoint is clicked with the locator
137// //
138// // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
139// // and switched off when the mouse button is released.
140// //
458282ff 141
b5241d61 142// // static Int_t pxold, pyold;
458282ff 143
88cb7938 144// AliPHOSLoader * gime = AliPHOSLoader::GetInstance() ;
458282ff 145
b5241d61 146// static TGraph * digitgraph = 0 ;
458282ff 147
b5241d61 148// if (!gPad->IsEditable()) return;
458282ff 149
b5241d61 150// TH2F * histo = 0 ;
151// TCanvas * histocanvas ;
458282ff 152
b5241d61 153// switch (event) {
458282ff 154
b5241d61 155// case kButton1Down: {
156// AliPHOSDigit * digit ;
157// AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
158// Int_t iDigit;
159// Int_t relid[4] ;
458282ff 160
b5241d61 161// const Int_t kMulDigit = AliPHOSCpvRecPoint::GetDigitsMultiplicity() ;
162// Float_t * xi = new Float_t[kMulDigit] ;
163// Float_t * zi = new Float_t[kMulDigit] ;
458282ff 164
b5241d61 165// // create the histogram for the single cluster
166// // 1. gets histogram boundaries
167// Float_t ximax = -999. ;
168// Float_t zimax = -999. ;
169// Float_t ximin = 999. ;
170// Float_t zimin = 999. ;
458282ff 171
b5241d61 172// for(iDigit=0; iDigit<kMulDigit; iDigit++) {
7b7c1533 173// digit = (AliPHOSDigit *) ( gime->Digit(fDigitsList[iDigit]) ) ;
b5241d61 174// phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
175// phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]);
176// if ( xi[iDigit] > ximax )
177// ximax = xi[iDigit] ;
178// if ( xi[iDigit] < ximin )
179// ximin = xi[iDigit] ;
180// if ( zi[iDigit] > zimax )
181// zimax = zi[iDigit] ;
182// if ( zi[iDigit] < zimin )
183// zimin = zi[iDigit] ;
184// }
185// ximax += phosgeom->GetCrystalSize(0) / 2. ;
186// zimax += phosgeom->GetCrystalSize(2) / 2. ;
187// ximin -= phosgeom->GetCrystalSize(0) / 2. ;
188// zimin -= phosgeom->GetCrystalSize(2) / 2. ;
189// Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ;
190// Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ;
458282ff 191
b5241d61 192// // 2. gets the histogram title
458282ff 193
b5241d61 194// Text_t title[100] ;
195// sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ;
458282ff 196
b5241d61 197// if (!histo) {
198// delete histo ;
199// histo = 0 ;
200// }
201// histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ;
458282ff 202
b5241d61 203// Float_t x, z ;
204// for(iDigit=0; iDigit<kMulDigit; iDigit++) {
7b7c1533 205// digit = (AliPHOSDigit *) ( gime->Digit(fDigitsList[iDigit]) ) ;
b5241d61 206// phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
207// phosgeom->RelPosInModule(relid, x, z);
208// histo->Fill(x, z, fEnergyList[iDigit] ) ;
209// }
458282ff 210
b5241d61 211// if (!digitgraph) {
212// digitgraph = new TGraph(kMulDigit,xi,zi);
213// digitgraph-> SetMarkerStyle(5) ;
214// digitgraph-> SetMarkerSize(1.) ;
215// digitgraph-> SetMarkerColor(1) ;
216// digitgraph-> Paint("P") ;
217// }
458282ff 218
b5241d61 219// Print() ;
220// histocanvas = new TCanvas("cluser", "a single cluster", 600, 500) ;
221// histocanvas->Draw() ;
222// histo->Draw("lego1") ;
458282ff 223
b5241d61 224// delete[] xi ;
225// delete[] zi ;
458282ff 226
b5241d61 227// break;
228// }
458282ff 229
b5241d61 230// case kButton1Up:
231// if (digitgraph) {
232// delete digitgraph ;
233// digitgraph = 0 ;
234// }
235// break;
458282ff 236
b5241d61 237// }
458282ff 238}
239
240//____________________________________________________________________________
a4e98857 241void AliPHOSCpvRecPoint::EvalAll(Float_t logWeight,TClonesArray * digits)
242{
243 // wraps other methods
b5241d61 244 AliPHOSEmcRecPoint::EvalAll(logWeight,digits) ;
245 EvalClusterLengths(digits) ;
ad8cfaf4 246}
247//____________________________________________________________________________
b5241d61 248void AliPHOSCpvRecPoint::EvalLocalPosition(Float_t logWeight,TClonesArray * digits)
ad8cfaf4 249{
250 // Calculates the center of gravity in the local PHOS-module coordinates
251
ad8cfaf4 252 Float_t wtot = 0. ;
253
254 Int_t relid[4] ;
255
256 Float_t x = 0. ;
257 Float_t z = 0. ;
258
259 AliPHOSDigit * digit ;
260
88cb7938 261 AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry();
262
ad8cfaf4 263 Int_t iDigit;
264
265 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
b5241d61 266 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]);
ad8cfaf4 267
268 Float_t xi ;
269 Float_t zi ;
270 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
271 phosgeom->RelPosInModule(relid, xi, zi);
b5241d61 272 Float_t w = TMath::Max( 0., logWeight + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
ad8cfaf4 273 x += xi * w ;
274 z += zi * w ;
275 wtot += w ;
276 }
277
278 if (wtot != 0) {
279 x /= wtot ;
280 z /= wtot ;
281 } else {
282 x = -1e6 ;
283 z = -1e6 ;
21cd0c07 284 if (fMulDigit != 0)
285 Warning(":EvalLocalPosition", "Too low log weight factor to evaluate cluster's center" ) ;
ad8cfaf4 286 }
287 fLocPos.SetX(x) ;
288 fLocPos.SetY(0.) ;
289 fLocPos.SetZ(z) ;
0d6c7a69 290 fLocPosM = 0 ;
ad8cfaf4 291
292}
293
294//____________________________________________________________________________
b5241d61 295void AliPHOSCpvRecPoint::EvalClusterLengths(TClonesArray * digits)
458282ff 296{
b5241d61 297 //Modified 15.03.2001 by Dmitri Peressounko
458282ff 298
458282ff 299 // Calculates the cluster lengths along X and Z axes
300 // These characteristics are needed for CPV to tune
301 // digitization+reconstruction to experimental data
302 // Yuri Kharlov. 24 October 2000
303
458282ff 304 Int_t relid[4] ;
305
306 AliPHOSDigit * digit ;
307
88cb7938 308 AliPHOSGeometry * phosgeom = AliPHOSLoader::GetPHOSGeometry();
458282ff 309
a3dfe79c 310 const Int_t kMaxLeng=20;
311 Int_t idX[kMaxLeng], idZ[kMaxLeng];
b5241d61 312 fLengX = 0;
313 fLengZ = 0;
458282ff 314 Bool_t dejavu;
315
316 for(Int_t iDigit=0; iDigit<fMulDigit; iDigit++) {
b5241d61 317 digit = (AliPHOSDigit *) digits->At(fDigitsList[iDigit]) ;
458282ff 318 Int_t absId = digit->GetId();
319 phosgeom->AbsToRelNumbering(absId, relid) ;
320
cd461ab8 321 Int_t i;
458282ff 322 dejavu=kFALSE;
b5241d61 323 for (i=0; i<fLengX; i++) if (relid[2]==idX[i]) { dejavu=kTRUE; break; }
458282ff 324 if (!dejavu) {
b5241d61 325 idX[fLengX]=relid[2];
326 fLengX++;
327 fLengX = TMath::Min(fLengX,kMaxLeng);
458282ff 328 }
329
330 dejavu=kFALSE;
b5241d61 331 for (i=0; i<fLengZ; i++) if (relid[3]==idZ[i]) { dejavu=kTRUE; break; }
458282ff 332 if (!dejavu) {
b5241d61 333 idZ[fLengZ]=relid[3];
334 fLengZ++;
335 fLengZ = TMath::Min(fLengZ,kMaxLeng);
458282ff 336 }
337 }
458282ff 338}
339
458282ff 340
341
342//____________________________________________________________________________
a8c47ab6 343void AliPHOSCpvRecPoint::Print(Option_t *)
458282ff 344{
345 // Print the list of digits belonging to the cluster
346
21cd0c07 347 TString message ;
348 message = "AliPHOSCpvRecPoint: " ;
349 message += "Digits # " ;
350 Info("Print", message.Data()) ;
351
458282ff 352 Int_t iDigit;
458282ff 353
b5241d61 354 for(iDigit=0; iDigit<fMulDigit; iDigit++)
21cd0c07 355 Info("Print", " %d ", fDigitsList[iDigit]) ;
458282ff 356
21cd0c07 357 Info("Print", "Energies: ") ;
b5241d61 358 for(iDigit=0; iDigit<fMulDigit; iDigit++)
21cd0c07 359 Info("Print", " %f ", fEnergyList[iDigit]) ;
b5241d61 360
21cd0c07 361 message = " Multiplicity = %d\n" ;
362 message += " Cluster Energy = %f\n" ;
363 message += " Stored at position %d\n" ;
458282ff 364
21cd0c07 365 Info("Print", message.Data(), fMulDigit, fAmp, GetIndexInList() ) ;
366
458282ff 367}