]> git.uio.no Git - u/mrichter/AliRoot.git/blame - PHOS/AliPHOSCpvRecPoint.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
new design:clusterizers derive from TTask
[u/mrichter/AliRoot.git] / PHOS / AliPHOSCpvRecPoint.cxx
CommitLineData
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"
30
31// --- Standard library ---
32
33#include <iostream.h>
34
35// --- AliRoot header files ---
36
37#include "AliPHOSGeometry.h"
38#include "AliPHOSCpvRecPoint.h"
c4073cad 39#include "AliPHOSPpsdRecPoint.h"
458282ff 40#include "AliRun.h"
41#include "AliPHOSIndexToObject.h"
42
43ClassImp(AliPHOSCpvRecPoint)
44
45//____________________________________________________________________________
46AliPHOSCpvRecPoint::AliPHOSCpvRecPoint(Float_t W0, Float_t LocMaxCut)
47 : AliPHOSRecPoint()
48{
49 // ctor
50
51 fMulDigit = 0 ;
52 fAmp = 0. ;
53 fEnergyList = new Float_t[fMaxDigit];
54 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
55 fDelta = phosgeom->GetCrystalSize(0) ;
56 fW0 = W0 ;
57 fLocMaxCut = LocMaxCut ;
58 fLocPos.SetX(1000000.) ; //Local position should be evaluated
59 fLengX = -1;
60 fLengZ = -1;
61}
62
63//____________________________________________________________________________
64AliPHOSCpvRecPoint::~AliPHOSCpvRecPoint()
65{
66 // dtor
67 if ( fEnergyList ) delete[] fEnergyList ;
68}
69
70//____________________________________________________________________________
71void AliPHOSCpvRecPoint::AddDigit(AliPHOSDigit & digit, Float_t Energy)
72{
73 // Adds a digit to the RecPoint
74 // and accumulates the total amplitude and the multiplicity
75
76 if ( fMulDigit >= fMaxDigit ) { // increase the size of the lists
77 fMaxDigit*=2 ;
78 Int_t * tempo = new ( Int_t[fMaxDigit] ) ;
79 Float_t * tempoE = new ( Float_t[fMaxDigit] ) ;
80
81 Int_t index ;
82 for ( index = 0 ; index < fMulDigit ; index++ ){
83 tempo[index] = fDigitsList[index] ;
84 tempoE[index] = fEnergyList[index] ;
85 }
86
87 delete [] fDigitsList ;
88 fDigitsList = new ( Int_t[fMaxDigit] ) ;
89
90 delete [] fEnergyList ;
91 fEnergyList = new ( Float_t[fMaxDigit] ) ;
92
93 for ( index = 0 ; index < fMulDigit ; index++ ){
94 fDigitsList[index] = tempo[index] ;
95 fEnergyList[index] = tempoE[index] ;
96 }
97
98 delete [] tempo ;
99 delete [] tempoE ;
100 } // if
101
102 fDigitsList[fMulDigit] = digit.GetIndexInList() ;
103 fEnergyList[fMulDigit] = Energy ;
104 fMulDigit++ ;
105 fAmp += Energy ;
106}
107
108//____________________________________________________________________________
ad8cfaf4 109Bool_t AliPHOSCpvRecPoint::AreNeighbours(AliPHOSDigit * digit1, AliPHOSDigit * digit2 ) const
458282ff 110{
111 // Tells if (true) or not (false) two digits are neighbors)
112
113 Bool_t aren = kFALSE ;
114
115 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
116 Int_t relid1[4] ;
117 phosgeom->AbsToRelNumbering(digit1->GetId(), relid1) ;
118
119 Int_t relid2[4] ;
120 phosgeom->AbsToRelNumbering(digit2->GetId(), relid2) ;
121
122 Int_t rowdiff = TMath::Abs( relid1[2] - relid2[2] ) ;
123 Int_t coldiff = TMath::Abs( relid1[3] - relid2[3] ) ;
124
125 if (( coldiff <= 1 ) && ( rowdiff <= 1 ) && (coldiff + rowdiff > 0))
126 aren = kTRUE ;
127
128 return aren ;
129}
130
131//____________________________________________________________________________
2a941f4e 132Int_t AliPHOSCpvRecPoint::Compare(const TObject * obj) const
458282ff 133{
134 // Compares two RecPoints according to their position in the PHOS modules
135
136 Int_t rv ;
137
c4073cad 138 if( (strcmp(obj->ClassName() , "AliPHOSPpsdRecPoint" )) == 0) // PPSD Rec Point
139 {
140 AliPHOSPpsdRecPoint * clu = (AliPHOSPpsdRecPoint *)obj ;
141 if(this->GetPHOSMod() < clu->GetPHOSMod() )
142 rv = -1 ;
143 else
144 rv = 1 ;
145 return rv ;
146 }
147 else
148 {
149 AliPHOSCpvRecPoint * clu = (AliPHOSCpvRecPoint *) obj ;
150
151 Int_t phosmod1 = this->GetPHOSMod() ;
152 Int_t phosmod2 = clu->GetPHOSMod() ;
153
154 TVector3 locpos1;
155 this->GetLocalPosition(locpos1) ;
156 TVector3 locpos2;
157 clu->GetLocalPosition(locpos2) ;
158
159 if(phosmod1 == phosmod2 ) {
160 Int_t rowdif = (Int_t)TMath::Ceil(locpos1.X()/fDelta)-(Int_t)TMath::Ceil(locpos2.X()/fDelta) ;
161 if (rowdif> 0)
162 rv = -1 ;
163 else if(rowdif < 0)
164 rv = 1 ;
165 else if(locpos1.Z()>locpos2.Z())
166 rv = -1 ;
167 else
168 rv = 1 ;
169 }
170
171 else {
172 if(phosmod1 < phosmod2 )
173 rv = -1 ;
174 else
175 rv = 1 ;
176 }
177
178 return rv ;
179 }
458282ff 180}
181
182//______________________________________________________________________________
183void AliPHOSCpvRecPoint::ExecuteEvent(Int_t event, Int_t px, Int_t py)
184{
185 // Execute action corresponding to one event
186 // This member function is called when a AliPHOSRecPoint is clicked with the locator
187 //
188 // If Left button is clicked on AliPHOSRecPoint, the digits are switched on
189 // and switched off when the mouse button is released.
190 //
191
192 // static Int_t pxold, pyold;
193
194 AliPHOSIndexToObject * please = AliPHOSIndexToObject::GetInstance() ;
195
196 static TGraph * digitgraph = 0 ;
197
198 if (!gPad->IsEditable()) return;
199
200 TH2F * histo = 0 ;
201 TCanvas * histocanvas ;
202
203 switch (event) {
204
205 case kButton1Down: {
206 AliPHOSDigit * digit ;
207 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
208 Int_t iDigit;
209 Int_t relid[4] ;
210
211 const Int_t kMulDigit = AliPHOSCpvRecPoint::GetDigitsMultiplicity() ;
212 Float_t * xi = new Float_t[kMulDigit] ;
213 Float_t * zi = new Float_t[kMulDigit] ;
214
215 // create the histogram for the single cluster
216 // 1. gets histogram boundaries
217 Float_t ximax = -999. ;
218 Float_t zimax = -999. ;
219 Float_t ximin = 999. ;
220 Float_t zimin = 999. ;
221
222 for(iDigit=0; iDigit<kMulDigit; iDigit++) {
223 digit = (AliPHOSDigit *) ( please->GimeDigit(fDigitsList[iDigit]) ) ;
224 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
225 phosgeom->RelPosInModule(relid, xi[iDigit], zi[iDigit]);
226 if ( xi[iDigit] > ximax )
227 ximax = xi[iDigit] ;
228 if ( xi[iDigit] < ximin )
229 ximin = xi[iDigit] ;
230 if ( zi[iDigit] > zimax )
231 zimax = zi[iDigit] ;
232 if ( zi[iDigit] < zimin )
233 zimin = zi[iDigit] ;
234 }
235 ximax += phosgeom->GetCrystalSize(0) / 2. ;
236 zimax += phosgeom->GetCrystalSize(2) / 2. ;
237 ximin -= phosgeom->GetCrystalSize(0) / 2. ;
238 zimin -= phosgeom->GetCrystalSize(2) / 2. ;
239 Int_t xdim = (int)( (ximax - ximin ) / phosgeom->GetCrystalSize(0) + 0.5 ) ;
240 Int_t zdim = (int)( (zimax - zimin ) / phosgeom->GetCrystalSize(2) + 0.5 ) ;
241
242 // 2. gets the histogram title
243
244 Text_t title[100] ;
245 sprintf(title,"Energy=%1.2f GeV ; Digits ; %d ", GetEnergy(), GetDigitsMultiplicity()) ;
246
247 if (!histo) {
248 delete histo ;
249 histo = 0 ;
250 }
251 histo = new TH2F("cluster3D", title, xdim, ximin, ximax, zdim, zimin, zimax) ;
252
253 Float_t x, z ;
254 for(iDigit=0; iDigit<kMulDigit; iDigit++) {
255 digit = (AliPHOSDigit *) ( please->GimeDigit(fDigitsList[iDigit]) ) ;
256 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
257 phosgeom->RelPosInModule(relid, x, z);
258 histo->Fill(x, z, fEnergyList[iDigit] ) ;
259 }
260
261 if (!digitgraph) {
262 digitgraph = new TGraph(kMulDigit,xi,zi);
263 digitgraph-> SetMarkerStyle(5) ;
264 digitgraph-> SetMarkerSize(1.) ;
265 digitgraph-> SetMarkerColor(1) ;
266 digitgraph-> Paint("P") ;
267 }
268
269 Print() ;
270 histocanvas = new TCanvas("cluser", "a single cluster", 600, 500) ;
271 histocanvas->Draw() ;
272 histo->Draw("lego1") ;
273
274 delete[] xi ;
275 delete[] zi ;
276
277 break;
278 }
279
280 case kButton1Up:
281 if (digitgraph) {
282 delete digitgraph ;
283 digitgraph = 0 ;
284 }
285 break;
286
287 }
288}
289
290//____________________________________________________________________________
ad8cfaf4 291void AliPHOSCpvRecPoint::EvalAll(){
292 AliPHOSRecPoint::EvalAll() ;
293 EvalLocalPosition() ;
294}
295//____________________________________________________________________________
296void AliPHOSCpvRecPoint::EvalLocalPosition()
297{
298 // Calculates the center of gravity in the local PHOS-module coordinates
299
300 AliPHOSIndexToObject * please = AliPHOSIndexToObject::GetInstance() ;
301
302 Float_t wtot = 0. ;
303
304 Int_t relid[4] ;
305
306 Float_t x = 0. ;
307 Float_t z = 0. ;
308
309 AliPHOSDigit * digit ;
310
311 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
312
313 Int_t iDigit;
314
315 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
316 digit = (AliPHOSDigit *) ( please->GimeDigit(fDigitsList[iDigit]) );
317
318 Float_t xi ;
319 Float_t zi ;
320 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
321 phosgeom->RelPosInModule(relid, xi, zi);
322 Float_t w = TMath::Max( 0., fW0 + TMath::Log( fEnergyList[iDigit] / fAmp ) ) ;
323 x += xi * w ;
324 z += zi * w ;
325 wtot += w ;
326 }
327
328 if (wtot != 0) {
329 x /= wtot ;
330 z /= wtot ;
331 } else {
332 x = -1e6 ;
333 z = -1e6 ;
334 if (fMulDigit != 0) cout << "AliPHOSCpvRecPoint: too low log weight factor "
335 << "to evaluate cluster's center\n";
336 }
337 fLocPos.SetX(x) ;
338 fLocPos.SetY(0.) ;
339 fLocPos.SetZ(z) ;
340
341}
342
343//____________________________________________________________________________
344Float_t AliPHOSCpvRecPoint::GetDispersion() const
458282ff 345{
346 // Calculates the dispersion of the shower at the origine of the RecPoint
347
348 AliPHOSIndexToObject * please = AliPHOSIndexToObject::GetInstance() ;
349
350 Float_t d = 0 ;
351 Float_t wtot = 0 ;
352
353 TVector3 locpos;
354 GetLocalPosition(locpos);
355 Float_t x = locpos.X() ;
356 Float_t z = locpos.Z() ;
357
358 AliPHOSDigit * digit ;
359 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
360
361 Int_t iDigit;
362 for(iDigit=0; iDigit < fMulDigit; iDigit++) {
363 digit = (AliPHOSDigit *) ( please->GimeDigit(fDigitsList[iDigit]) ) ;
364 Int_t relid[4] ;
365 Float_t xi ;
366 Float_t zi ;
367 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
368 phosgeom->RelPosInModule(relid, xi, zi);
369 Float_t w = TMath::Max(0.,fW0+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
370 d += w*((xi-x)*(xi-x) + (zi-z)*(zi-z) ) ;
371 wtot+=w ;
372 }
373
374 d /= wtot ;
375
376 return TMath::Sqrt(d) ;
377}
378
379//____________________________________________________________________________
ad8cfaf4 380void AliPHOSCpvRecPoint::GetElipsAxis(Float_t * lambda) const
458282ff 381{
382 // Calculates the axis of the shower ellipsoid
383
384 AliPHOSIndexToObject * please = AliPHOSIndexToObject::GetInstance() ;
385
386 Float_t wtot = 0. ;
387 Float_t x = 0.;
388 Float_t z = 0.;
389 Float_t dxx = 0.;
390 Float_t dzz = 0.;
391 Float_t dxz = 0.;
392
393 AliPHOSDigit * digit ;
394 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
395 Int_t iDigit;
396
397 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
398 digit = (AliPHOSDigit *) ( please->GimeDigit(fDigitsList[iDigit]) ) ;
399 Int_t relid[4] ;
400 Float_t xi ;
401 Float_t zi ;
402 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
403 phosgeom->RelPosInModule(relid, xi, zi);
404 Float_t w = TMath::Max(0.,fW0+TMath::Log(fEnergyList[iDigit]/fAmp ) ) ;
405 dxx += w * xi * xi ;
406 x += w * xi ;
407 dzz += w * zi * zi ;
408 z += w * zi ;
409 dxz += w * xi * zi ;
410 wtot += w ;
411 }
412
413 dxx /= wtot ;
414 x /= wtot ;
415 dxx -= x * x ;
416 dzz /= wtot ;
417 z /= wtot ;
418 dzz -= z * z ;
419 dxz /= wtot ;
420 dxz -= x * z ;
421
422 Float_t tmp0 = 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz );
423 Float_t tmp1 = 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz );
424 if (tmp0>=0) lambda[0] = TMath::Sqrt(tmp0);
425 else lambda[0] = -TMath::Sqrt(-tmp0);
426 if (tmp1>=0) lambda[1] = TMath::Sqrt(tmp1);
427 else lambda[1] = -TMath::Sqrt(-tmp1);
428// lambda[0] = TMath::Sqrt( 0.5 * (dxx + dzz) + TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ) ;
429// lambda[1] = TMath::Sqrt( 0.5 * (dxx + dzz) - TMath::Sqrt( 0.25 * (dxx - dzz) * (dxx - dzz) + dxz * dxz ) ) ;
430}
431
458282ff 432
433//____________________________________________________________________________
434void AliPHOSCpvRecPoint::GetClusterLengths(Int_t &lengX, Int_t &lengZ)
435{
436 // Calculates the cluster lengths along X and Z axes
437 // These characteristics are needed for CPV to tune
438 // digitization+reconstruction to experimental data
439 // Yuri Kharlov. 24 October 2000
440
441 if( fLengX != -1 && fLengZ != -1 ) { // already evaluated
442 lengX = fLengX ;
443 lengZ = fLengZ ;
444 return ;
445 }
446
447 AliPHOSIndexToObject * please = AliPHOSIndexToObject::GetInstance() ;
448
449 Int_t relid[4] ;
450
451 AliPHOSDigit * digit ;
452
453 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
454
a3dfe79c 455 const Int_t kMaxLeng=20;
456 Int_t idX[kMaxLeng], idZ[kMaxLeng];
458282ff 457 lengX = 0;
458 lengZ = 0;
459 Bool_t dejavu;
460
461 for(Int_t iDigit=0; iDigit<fMulDigit; iDigit++) {
462 digit = (AliPHOSDigit *) ( please->GimeDigit(fDigitsList[iDigit]) );
463 Int_t absId = digit->GetId();
464 phosgeom->AbsToRelNumbering(absId, relid) ;
465
cd461ab8 466 Int_t i;
458282ff 467 dejavu=kFALSE;
cd461ab8 468 for (i=0; i<lengX; i++) if (relid[2]==idX[i]) { dejavu=kTRUE; break; }
458282ff 469 if (!dejavu) {
470 idX[lengX]=relid[2];
471 lengX++;
a3dfe79c 472 lengX = TMath::Min(lengX,kMaxLeng);
458282ff 473 }
474
475 dejavu=kFALSE;
cd461ab8 476 for (i=0; i<lengZ; i++) if (relid[3]==idZ[i]) { dejavu=kTRUE; break; }
458282ff 477 if (!dejavu) {
478 idZ[lengZ]=relid[3];
479 lengZ++;
a3dfe79c 480 lengZ = TMath::Min(lengZ,kMaxLeng);
458282ff 481 }
482 }
483 fLengX = lengX;
484 fLengZ = lengZ;
485}
486
487//____________________________________________________________________________
ad8cfaf4 488Float_t AliPHOSCpvRecPoint::GetMaximalEnergy(void) const
458282ff 489{
490 // Finds the maximum energy in the cluster
491
492 Float_t menergy = 0. ;
493
494 Int_t iDigit;
495
496 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
497
498 if(fEnergyList[iDigit] > menergy)
499 menergy = fEnergyList[iDigit] ;
500 }
501 return menergy ;
502}
503
504//____________________________________________________________________________
ad8cfaf4 505Int_t AliPHOSCpvRecPoint::GetMultiplicityAtLevel(const Float_t H) const
458282ff 506{
507 // Calculates the multiplicity of digits with energy larger than H*energy
508
509 Int_t multipl = 0 ;
510 Int_t iDigit ;
511 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
512
513 if(fEnergyList[iDigit] > H * fAmp)
514 multipl++ ;
515 }
516 return multipl ;
517}
518
519//____________________________________________________________________________
ad8cfaf4 520Int_t AliPHOSCpvRecPoint::GetNumberOfLocalMax(Int_t * maxAt, Float_t * maxAtEnergy) const
458282ff 521{
522 // Calculates the number of local maxima in the cluster using fLocalMaxCut as the minimum
523 // energy difference between two local maxima
524
525 AliPHOSIndexToObject * please = AliPHOSIndexToObject::GetInstance() ;
526
527 AliPHOSDigit * digit ;
528 AliPHOSDigit * digitN ;
529
530
531 Int_t iDigitN ;
532 Int_t iDigit ;
533
534 for(iDigit = 0; iDigit < fMulDigit; iDigit++){
535 maxAt[iDigit] = (Int_t) ( please->GimeDigit(fDigitsList[iDigit]) ) ;
536 }
537
538 for(iDigit = 0 ; iDigit < fMulDigit; iDigit++) {
539 if(maxAt[iDigit] != -1) {
540 digit = (AliPHOSDigit *) maxAt[iDigit] ;
541
542 for(iDigitN = 0; iDigitN < fMulDigit; iDigitN++) {
543 digitN = (AliPHOSDigit *) ( please->GimeDigit(fDigitsList[iDigitN]) ) ;
544
545 if ( AreNeighbours(digit, digitN) ) {
546 if (fEnergyList[iDigit] > fEnergyList[iDigitN] ) {
547 maxAt[iDigitN] = -1 ;
548 // but may be digit too is not local max ?
549 if(fEnergyList[iDigit] < fEnergyList[iDigitN] + fLocMaxCut)
550 maxAt[iDigit] = -1 ;
551 }
552 else {
553 maxAt[iDigit] = -1 ;
554 // but may be digitN too is not local max ?
555 if(fEnergyList[iDigit] > fEnergyList[iDigitN] - fLocMaxCut)
556 maxAt[iDigitN] = -1 ;
557 }
558 } // if Areneighbours
559 } // while digitN
560 } // slot not empty
561 } // while digit
562
563 iDigitN = 0 ;
564 for(iDigit = 0; iDigit < fMulDigit; iDigit++) {
565 if(maxAt[iDigit] != -1){
566 maxAt[iDigitN] = maxAt[iDigit] ;
567 maxAtEnergy[iDigitN] = fEnergyList[iDigit] ;
568 iDigitN++ ;
569 }
570 }
571 return iDigitN ;
572}
573
574
575//____________________________________________________________________________
576void AliPHOSCpvRecPoint::Print(Option_t * option)
577{
578 // Print the list of digits belonging to the cluster
579
580 cout << "AliPHOSCpvRecPoint: " << endl ;
581
582 AliPHOSDigit * digit ;
583 Int_t iDigit;
584 AliPHOSGeometry * phosgeom = (AliPHOSGeometry *) fGeom ;
585
586 Float_t xi ;
587 Float_t zi ;
588 Int_t relid[4] ;
589
590 AliPHOSIndexToObject * please = AliPHOSIndexToObject::GetInstance() ;
591
592 for(iDigit=0; iDigit<fMulDigit; iDigit++) {
593 digit = please->GimeDigit( fDigitsList[iDigit] ) ;
594 phosgeom->AbsToRelNumbering(digit->GetId(), relid) ;
595 phosgeom->RelPosInModule(relid, xi, zi);
596 cout << " Id = " << digit->GetId() ;
597 cout << " module = " << relid[0] ;
598 cout << " x = " << xi ;
599 cout << " z = " << zi ;
600 cout << " Energy = " << fEnergyList[iDigit] << endl ;
601 }
602 cout << " Multiplicity = " << fMulDigit << endl ;
603 cout << " Cluster Energy = " << fAmp << endl ;
604 cout << " Stored at position " << GetIndexInList() << endl ;
605
606}