]> git.uio.no Git - u/mrichter/AliRoot.git/blame - TPC/AliTPCTrackHitsV2.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Compiler Warning removed
[u/mrichter/AliRoot.git] / TPC / AliTPCTrackHitsV2.cxx
CommitLineData
f641f6bd 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
88cb7938 16/* $Id$ */
19364939 17
f641f6bd 18///////////////////////////////////////////////////////////////////////////////
19// //
20// Time Projection Chamber track hits object //
21//
22// Origin: Marian Ivanov , GSI Darmstadt
23//
24// AliTPCTrackHitsV2
25// Container for Track Hits - based on standard TClonesArray -
26// fArray of AliTPCTrackHitsParamV2
27// In AliTPCTrackHitsParamV2 - parameterization of the track segment is stored
28// for each of the track segment - relative position ( distance between hits) and
29// charge of the hits is stored - comparing to classical TClonesArray of AliTPChit -
30// comperssion factor of 5-7 (depending on the required precision) -
31// In future release AliTPCTrackHitsV2 - will replace old AliTPCTrackHits - which were not
32// based on standard ROOT containers
33// Basic function:
34// // during building Container
35// AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, Double_t y, Double_t z,Int_t q)
36// void SetHitPrecision(Double_t prec) {fPrecision=prec;}
37// void SetStepPrecision(Double_t prec) {fStep=prec;}
38// Bool_t FlushHitStack(Bool_t force=kTRUE);
39// //at the end necessary to have Container in consistent state
40//
41// // looping over Container
42// Bool_t First(), Bool_t Next() - iterators - return status of the operation
43// AliTPChit * GetHit(); - return current hit
44
45
46//Begin_Html
47/*
48<img src="gif/AliTPCTrackHitsV2.gif">
49*/
50//End_Html
51// //
52// //
53///////////////////////////////////////////////////////////////////////////////
018a927a 54//
f641f6bd 55
56//#include "TVector3.h"
57#include "AliTPCTrackHitsV2.h"
58
59#include "TClonesArray.h"
60#include "AliTPC.h"
61
19364939 62#include <Riostream.h>
f641f6bd 63
64
65
66ClassImp(AliTPCTrackHitsV2)
67ClassImp(AliTrackHitsParamV2)
68
69 //
70Int_t AliTrackHitsParamV2::fgCounter1 =0;
71Int_t AliTrackHitsParamV2::fgCounter2 =0;
72//
73Int_t AliTPCTrackHitsV2::fgCounter1 =0;
74Int_t AliTPCTrackHitsV2::fgCounter2 =0;
75//
76const Double_t AliTPCTrackHitsV2::fgkPrecision=1e-6; //precision
77const Double_t AliTPCTrackHitsV2::fgkPrecision2=1e-20; //precision
78
79
80
81
f641f6bd 82struct AliTPCTempHitInfoV2 {
83 enum { fkStackSize = 10000};
84 AliTPCTempHitInfoV2();
85 void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q);
86 void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q);
87 Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];}
88 void UpdateParam(Double_t maxdelta); //recal
89 void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2,
90 Double_t fSumX, Double_t fSumX2, Double_t fSumX3,
91 Double_t fSumX4, Int_t n,
92 Double_t &a, Double_t &b, Double_t &c);
93 void Fit(AliTrackHitsParamV2 * param);
94 Double_t fSumDr; //
95 Double_t fSumDr2; //
96 Double_t fSumDr3; //
97 Double_t fSumDr4; //
98 Double_t fSumDFi; //
99 Double_t fSumDFiDr; //
100 Double_t fSumDFiDr2;//
101 Double_t fSumDZ; //
102 Double_t fSumDZDr; //
103 Double_t fSumDZDr2; //
104 Double_t fOldR; //previos r
105 Double_t fPositionStack[3*fkStackSize]; //position stack
106 UInt_t fQStack[fkStackSize]; //Q stack
107 UInt_t fStackIndex; //current stack index
108 // UInt_t fInfoIndex; //current track info index
109 UInt_t fParamIndex; //current track parameters index
110 // AliTrackHitsInfo * fInfo; //current track info
111 AliTrackHitsParamV2 * fParam; //current track param
112};
113
114
115AliTPCTempHitInfoV2::AliTPCTempHitInfoV2()
116{
117 //
118 //set to default value
119 fSumDr=fSumDr2=fSumDr3=fSumDr4=
120 fSumDFi=fSumDFiDr=fSumDFiDr2=
121 fSumDZ=fSumDZDr=fSumDZDr2=0;
122 fStackIndex = 0;
123 // fInfoIndex = 0;
124 fParamIndex = 0;
125}
126
127
128void AliTPCTempHitInfoV2::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q)
129{
130 //
131 //reset stack and sum parameters
132 //store line initial point
133 fSumDr=fSumDr2=fSumDr3=fSumDr4=
134 fSumDFi=fSumDFiDr=fSumDFiDr2=
135 fSumDZ=fSumDZDr=fSumDZDr2=0;
136 fStackIndex=0;
137 fParam->fR = r;
138 fOldR = r;
139 fParam->fZ = z;
140 fParam->fFi = fi;
141 fParam->fAn = 0.;
142 fParam->fAd = 0.;
143 fParam->fTheta =0.;
144 fParam->fThetaD =0.;
145 SetHit(r,z,fi,q);
146}
147
148void AliTPCTempHitInfoV2::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q)
149{
150 //
151 //add hit to the stack
152 //recalculate new estimete of line parameters
153 Double_t *f = GetPosition(fStackIndex);
154 f[0] = r;
155 f[1] = z;
156 f[2] = fi;
157 fQStack[fStackIndex]=q;
158 if (fStackIndex==0) return;
159 Double_t dr = (r-fParam->fR);
160 if (TMath::Abs(dr)<AliTPCTrackHitsV2::fgkPrecision) dr =AliTPCTrackHitsV2::fgkPrecision;
161 Double_t dfi = fi-fParam->fFi;
162 Double_t dz = z -fParam->fZ;
163 Double_t dr2 =dr*dr;
164 Double_t dr3 =dr2*dr;
165 Double_t dr4 =dr3*dr;
166 fSumDr +=dr;
167 fSumDr2+=dr2;
168 fSumDr3+=dr3;
169 fSumDr4+=dr4;
170 fSumDFi +=dfi;
171 fSumDFiDr+=dfi*dr;
172 fSumDFiDr2+=dfi*dr2;
173 fSumDZ +=dz;
174 fSumDZDr+=dz*dr;
175 fSumDZDr2+=dz*dr2;
176
177 //update fit parameters
178 //
179 Double_t det = fSumDr2*fSumDr4-fSumDr3*fSumDr3;
180 if (TMath::Abs(det)<AliTPCTrackHitsV2::fgkPrecision2) return;
181 if ( ( fStackIndex>1 ) ){
182 fParam->fAn = (fSumDr4*fSumDFiDr-fSumDr3*fSumDFiDr2)/det;
183 fParam->fAd = (fSumDr2*fSumDFiDr2-fSumDr3*fSumDFiDr)/det;
184 }
185 else
186 fParam->fAn = fSumDFiDr/fSumDr2;
187 if ( ( fStackIndex>1 ) ){
188 fParam->fTheta = (fSumDr4*fSumDZDr-fSumDr3*fSumDZDr2)/det;
189 fParam->fThetaD= (fSumDr2*fSumDZDr2-fSumDr3*fSumDZDr)/det;
190 }
191 else
192 fParam->fTheta = fSumDZDr/fSumDr2;
193}
194
195
196void AliTPCTempHitInfoV2::UpdateParam(Double_t maxdelta)
197{
198 //recalc parameters not fixing origin point
199 if (fStackIndex>5){
200 Double_t a,b,c;
201 a=b=c=0;
202 Fit2(fSumDFi, fSumDFiDr, fSumDFiDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4,
203 fStackIndex, a,b,c);
204 if (TMath::Abs(a)<maxdelta){
205 fParam->fFi +=a/fParam->fR;
206 fParam->fAn = b;
207 fParam->fAd = c;
208 }
209 Fit2(fSumDZ, fSumDZDr, fSumDZDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4,
210 fStackIndex, a,b,c) ;
211 if (TMath::Abs(a)<maxdelta){
212 fParam->fZ +=a;
213 fParam->fTheta = b;
214 fParam->fThetaD = c;
215 }
216 }
217
218}
219void AliTPCTempHitInfoV2::Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2,
220 Double_t fSumX, Double_t fSumX2, Double_t fSumX3,
221 Double_t fSumX4, Int_t n,
222 Double_t &a, Double_t &b, Double_t &c)
223{
224 //fit of second order
225 Double_t det =
226 n* (fSumX2*fSumX4-fSumX3*fSumX3) -
227 fSumX* (fSumX*fSumX4-fSumX3*fSumX2)+
228 fSumX2* (fSumX*fSumX3-fSumX2*fSumX2);
229
230 if (TMath::Abs(det)> AliTPCTrackHitsV2::fgkPrecision) {
231 a =
232 (fSumY * (fSumX2*fSumX4-fSumX3*fSumX3)-
233 fSumX *(fSumYX*fSumX4-fSumYX2*fSumX3)+
234 fSumX2*(fSumYX*fSumX3-fSumYX2*fSumX2))/det;
235 b=
236 (n*(fSumYX*fSumX4-fSumX3*fSumYX2)-
237 fSumY*(fSumX*fSumX4-fSumX3*fSumX2)+
238 fSumX2*(fSumX*fSumYX2-fSumYX*fSumX2))/det;
239 c=
240 (n*(fSumX2*fSumYX2-fSumYX*fSumX3)-
241 fSumX*(fSumX*fSumYX2-fSumYX*fSumX2)+
242 fSumY*(fSumX*fSumX3-fSumX2*fSumX2))/det;
243 }
244}
245
246void AliTPCTempHitInfoV2::Fit(AliTrackHitsParamV2 * param)
247{
248 // fit fixing first and the last point
249 //result stored in new param
250 Double_t dx2 = (GetPosition(fStackIndex))[0]-fParam->fR;
251 Double_t det = fSumDr4+dx2*fSumDr2-2*dx2*fSumDr3;
252 if ( (TMath::Abs(det)> AliTPCTrackHitsV2::fgkPrecision) &&
253 ((TMath::Abs(dx2)> AliTPCTrackHitsV2::fgkPrecision))){
254 Double_t dfi2 = (GetPosition(fStackIndex))[1]-fParam->fFi;
255 param->fAd = (fSumDFiDr2+dfi2*fSumDr-dx2*fSumDFiDr-dfi2*fSumDr3/dx2)/det;
256 param->fAn = (dfi2-param->fAd*dx2*dx2)/dx2;
257
258 Double_t dz2 = (GetPosition(fStackIndex))[1]-fParam->fZ;
259 param->fTheta = (fSumDZDr2+dz2*fSumDr-dx2*fSumDZDr-dz2*fSumDr3/dx2)/det;
260 param->fTheta = (dz2-param->fAd*dx2*dx2)/dx2;
261 }
262
263}
264
265AliTrackHitsParamV2::AliTrackHitsParamV2()
266{
267 //default constructor
268 fgCounter1++;
269 fgCounter2++;
270 fHitDistance=0;
271 fCharge=0;
272 fNHits=0;
273}
274AliTrackHitsParamV2::~AliTrackHitsParamV2()
275{
276 fgCounter1--;
277 if (fHitDistance) {
278 delete[]fHitDistance;
279 fHitDistance=0;
280 }
281 if (fCharge){
282 delete[]fCharge;
283 fCharge =0;
284 }
285}
286
287
288AliTPCTrackHitsV2::AliTPCTrackHitsV2()
289{
290 //
291 //default constructor
292 //
293 const Float_t kHitPrecision=0.002; //default precision for hit position in cm
294 const Float_t kStep =0.003; //30 mum step
295 const UShort_t kMaxDistance =100; //maximum distance 100
296
297 fPrecision=kHitPrecision; //precision in cm
298 fStep = kStep; //step size
299 fMaxDistance = kMaxDistance; //maximum distance
300 fTempInfo =0;
301 fSize=0;
302 //fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo");
303 //fTrackHitsParam = new AliObjectArray("AliTrackHitsParamV2");
304 //fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo");
305 fArray = new TClonesArray("AliTrackHitsParamV2");
306 fCurrentHit = new AliTPCCurrentHitV2;
307 fVolumes =0;
308 fNVolumes =0;
fce0283f 309 fHit =0;
f641f6bd 310 fgCounter1++;
311 fgCounter2++;
312
313}
314
315AliTPCTrackHitsV2::~AliTPCTrackHitsV2()
316{
317 //
318 //default destructor
319 //
320 // if (fTrackHitsInfo) delete fTrackHitsInfo;
321 if (fArray) {
322 delete fArray;
323 fArray =0;
324 }
325 //if (fHitsPosAndQ) delete fHitsPosAndQ;
326 if (fCurrentHit) delete fCurrentHit;
327 if (fTempInfo) delete fTempInfo;
328 if (fVolumes) {
329 delete [] fVolumes;
330 fVolumes =0;
331 fNVolumes=0;
332 }
fce0283f 333 if (fHit){
334 delete fHit;
335 fHit=0;
336 }
f641f6bd 337 fgCounter1--;
338}
339
340void AliTPCTrackHitsV2::Clear()
341{
342 //
343 //clear object
6e493dba 344 fSize = 0;
f641f6bd 345 if (fArray){
346 for (Int_t i=0;i<fArray->GetEntriesFast();i++){
347 AliTrackHitsParamV2 * par = (AliTrackHitsParamV2 *)fArray->UncheckedAt(i);
348 par->~AliTrackHitsParamV2(); // delete object
349 }
350 fArray->Clear();
351 }
352 if (fTempInfo){
353 delete fTempInfo;
fce0283f 354 delete fHit;
355 fHit =0;
f641f6bd 356 fTempInfo =0;
357 }
358 if (fVolumes){
359 delete [] fVolumes;
360 fVolumes=0;
361 fNVolumes=0;
362 }
363}
364
365
366void AliTPCTrackHitsV2::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x,
367 Double_t y, Double_t z,Int_t q)
368{
369 //
370 //add hit to the container - it add hit at the end - input in global coordinata
371 Double_t r = TMath::Sqrt(x*x+y*y);
372 Double_t fi = TMath::ACos(x/r);
373 if (y<0) fi*=-1.;
374 AddHit(volumeID,trackID,r,z,fi,q);
375}
376
377
378void AliTPCTrackHitsV2::AddHit(Int_t volumeID, Int_t trackID,
379 Double_t r, Double_t z, Double_t fi, Int_t q)
380{
381 //
382 fSize++;
383 Bool_t diff=kFALSE;
384 if (!fTempInfo) { //initialisation of track - initialisation of parameters
385 fTempInfo = new AliTPCTempHitInfoV2;
386 fTempInfo->fParam = new((*fArray)[0]) AliTrackHitsParamV2;
387 fTempInfo->fParam->fVolumeID = volumeID;
388 fTempInfo->fParam->fTrackID = trackID;
389 AddVolume(volumeID);
390 //
391 fTempInfo->fParamIndex = 0;
392 fTempInfo->NewParam(r,z,fi,q);
393 return;
394 }
395
396 // if new volume or new trackID
397 if ( (volumeID!=fTempInfo->fParam->fVolumeID) ||
398 (trackID!=fTempInfo->fParam->fTrackID)){
399 if (volumeID!=fTempInfo->fParam->fVolumeID) AddVolume(volumeID);
400 diff=kTRUE;
401 FlushHitStack(kTRUE);
402
403 fTempInfo->fParamIndex++;
404 fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2;
405 fTempInfo->fParam->fVolumeID = volumeID;
406 fTempInfo->fParam->fTrackID = trackID;
407 fTempInfo->NewParam(r,z,fi,q);
408 return;
409 }
410
411 //calculate current fit precission to next point
412 AliTrackHitsParamV2 &param = *(fTempInfo->fParam);
413 Double_t dd=0;
414 Double_t dl=0;
415 Double_t ratio=0;
416 Double_t dr,dz,dfi,ddz,ddfi;
417 Double_t drhit,ddl;
418 dr=dz=dfi=ddz=ddfi=0;
419 drhit = r-fTempInfo->fOldR;
420 {
421 //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR);
422 Double_t dfi2 = param.fAn;
423 dfi2*=dfi2*fTempInfo->fOldR*fTempInfo->fOldR;
424 //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR);
425 Double_t ddz2 = param.fTheta;
426 ddz2*=ddz2;
427 ratio = TMath::Sqrt(1.+ dfi2+ ddz2);
428 }
c4a237ae 429 //
430 // dl = fStep * Short_t(TMath::Nint(drhit*ratio/fStep)); // MI change - range check
431 dl = drhit*ratio/fStep;
432 if (TMath::Abs(dl)>32765) dl =0;
433 dl = fStep * Short_t(TMath::Nint(dl));
434 //
f641f6bd 435 ddl = dl - drhit*ratio;
436 fTempInfo->fOldR += dl/ratio;
437
438 if (fTempInfo->fStackIndex>2){
439 dr = r-param.fR;
440 dz = z-param.fZ;
441 dfi = fi-param.fFi;
442 ddz = dr*param.fTheta+dr*dr*param.fThetaD-dz;
443 ddfi= dr*param.fAn+dr*dr*param.fAd-dfi;
444 dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl);
445 //
446 }
447 //safety factor 1.25
448 if ( ( (dd*1.25>fPrecision) ) ||
449 (fTempInfo->fStackIndex+4>fTempInfo->fkStackSize) ||
450 (TMath::Abs(dl/fStep)>fMaxDistance) )
451 diff=kTRUE;
452 else{ // if precision OK
453 fTempInfo->fStackIndex++;
454 fTempInfo->SetHit(r,z,fi,q);
455 return;
456 }
457
458
459 //if parameter changed
460 if (FlushHitStack(kFALSE)){ //if full buffer flushed
461 fTempInfo->fParamIndex++;
462 fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2;
463 fTempInfo->fParam->fVolumeID = volumeID;
464 fTempInfo->fParam->fTrackID = trackID;
465 fTempInfo->NewParam(r,z,fi,q);
466 }
467 else{
468 fTempInfo->fStackIndex++;
469 fTempInfo->SetHit(r,z,fi,q);
470 }
471}
472
473Bool_t AliTPCTrackHitsV2::FlushHitStack(Bool_t force)
474{
475 //
476 //write fHitsPosAndQ information from the stack to te arrays
477 if (!fTempInfo) return kFALSE;
478
479 AliTrackHitsParamV2 & param = *(fTempInfo->fParam);
480 //recalculate track parameter not fixing first point
481 fTempInfo->UpdateParam(fStep/4.);
482 //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point
483
484 Double_t oldr = param.fR;
485 UInt_t i;
486 Double_t dd;
487 param.fNHits = fTempInfo->fStackIndex+1;
488 if (param.fHitDistance) delete []param.fHitDistance;
489 if (param.fCharge) delete []param.fCharge;
490 param.fHitDistance = new Short_t[param.fNHits];
491 param.fCharge = new Short_t[param.fNHits];
492
493
494 for (i=0; i <= fTempInfo->fStackIndex; i++){
495 Double_t * position = fTempInfo->GetPosition(i);
496 Double_t dr = position[0]-oldr;
497 Double_t ratio;
498 {
499 //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR);
500 Double_t dfi2 = param.fAn;
501 dfi2*=dfi2*oldr*oldr;
502 //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR);
503 Double_t ddz2 = param.fTheta;
504 ddz2*=ddz2;
505 ratio = TMath::Sqrt(1.+ dfi2+ ddz2);
506 }
507
595c3700 508 // Double_t dl = fStep*(Short_t)TMath::Nint(dr*ratio/fStep); //MI change
509 Double_t dl = dr*ratio/fStep;
510 if (TMath::Abs(dl)>32765) dl =0;
511 dl = fStep * Short_t(TMath::Nint(dl));
512
f641f6bd 513 dr = dl/ratio;
514 oldr+=dr;
515 //calculate precission
516 AliTrackHitsParamV2 &param = *(fTempInfo->fParam);
517 //real deltas
518 Double_t dr1= position[0]-param.fR;
519 Double_t dz = position[1]-param.fZ;
520 Double_t dfi = position[2]-param.fFi;
521 //extrapolated deltas
522 Double_t dr2 = oldr-param.fR;
523 Double_t ddr = dr2-dr1;
524 Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz;
525 Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi;
526 dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr);
527
528
529 if ( (dd>fPrecision) ){
530 //if ( (dd<0) ){
531 if (i==0){
532 param.fAn = 0;
533 param.fAd = 0;
534 param.fTheta =0;
535 param.fThetaD =0;
536 Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz;
537 Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi;
538 dl = 0;
539 dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr);
540 }
541 else
542 break;
543 }
544
545 param.fHitDistance[i]= Short_t(TMath::Nint(dl/fStep));
546 param.fCharge[i]= Short_t(fTempInfo->fQStack[i]);
547 }
548
549 if (i<=fTempInfo->fStackIndex){ //if previous iteration not succesfull
550 Short_t * charge = new Short_t[i];
551 Short_t * hitDistance= new Short_t[i];
552 memcpy(charge, param.fCharge,sizeof(Short_t)*i);
553 memcpy(hitDistance, param.fHitDistance,sizeof(Short_t)*i);
554 delete [] param.fCharge;
555 delete [] param.fHitDistance;
556 param.fNHits= i;
557 param.fCharge = charge;
558 param.fHitDistance = hitDistance;
559 //
560 Int_t volumeID = fTempInfo->fParam->fVolumeID;
561 Int_t trackID =fTempInfo->fParam->fTrackID;
562 fTempInfo->fParamIndex++;
563 fTempInfo->fParam = new((*fArray)[fTempInfo->fParamIndex]) AliTrackHitsParamV2;
564 Double_t * p = fTempInfo->GetPosition(i);
565 UInt_t index2 = fTempInfo->fStackIndex;
566 fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->fQStack[i]);
567 fTempInfo->fParam->fVolumeID= volumeID;
568 fTempInfo->fParam->fTrackID= trackID;
569 if (i+1<=index2) FlushHitStack2(i+1,index2);
570
571 if (force) return FlushHitStack(kTRUE);
572 return kFALSE;
573 }
574 return kTRUE;
575}
576
577
578void AliTPCTrackHitsV2::FlushHitStack2(Int_t index1, Int_t index2)
579{
580 //
581 // second iteration flush stack
582 // call only for hits where first iteration were not succesfully interpolated
583 Double_t * positionstack = new Double_t[3*(index2-index1+1)];
584 UInt_t * qstack = new UInt_t[index2-index1+1];
585 memcpy(positionstack, &fTempInfo->fPositionStack[3*index1],
586 (3*(index2-index1+1))*sizeof(Double_t));
587 memcpy(qstack, &fTempInfo->fQStack[index1],(index2-index1+1)*sizeof(UInt_t));
588 Double_t *p = positionstack;
589 for (Int_t j=0; j<=index2-index1;j++){
590 fTempInfo->fStackIndex++;
591 fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j]);
592 }
593 delete []positionstack;
594 delete []qstack;
595}
596
597
598void AliTPCTrackHitsV2::AddVolume(Int_t volume)
599{
600 //
601 //add volumes to tthe list of volumes
602 Int_t * volumes = new Int_t[fNVolumes+1];
f55b9162 603 if (fVolumes) memcpy(volumes,fVolumes,(fNVolumes)*sizeof(Int_t));
f641f6bd 604 volumes[fNVolumes]=volume;
605 fNVolumes++;
606 if (fVolumes) delete []fVolumes;
607 fVolumes = volumes;
608}
609
610
611
612
613
614Bool_t AliTPCTrackHitsV2::First()
615{
616 //
617 //set Current hit for the first hit
618 //
6e493dba 619
620 if (fArray->GetSize()<=0) {
621 fCurrentHit->fStatus = kFALSE;
622 return kFALSE;
623 }
624
f641f6bd 625 AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(0);
fce0283f 626 if (!fHit) fHit = new AliTPChit;
f641f6bd 627 if (!(param) ) {
628 fCurrentHit->fStatus = kFALSE;
629 return kFALSE;
630 }
631 //
632 fCurrentHit->fParamIndex = 0;
633 fCurrentHit->fStackIndex = 0;
634 //
fce0283f 635 //
636 ((AliTPChit*)fHit)->fSector = param->fVolumeID;
637 ((AliTPChit*)fHit)->SetTrack(param->fTrackID);
638 ((AliTPChit*)fHit)->SetX(param->fR*TMath::Cos(param->fFi));
639 ((AliTPChit*)fHit)->SetY(param->fR*TMath::Sin(param->fFi));
640 ((AliTPChit*)fHit)->SetZ(param->fZ);
641 ((AliTPChit*)fHit)->fQ = param->fCharge[0];
642 /*
643 fCurrentHit->fHit.fSector = param->fVolumeID;
644 fCurrentHit->fHit.SetTrack(param->fTrackID);
645 fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi));
646 fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi));
647 fCurrentHit->fHit.SetZ(param->fZ);
648 fCurrentHit->fHit.fQ = param->fCharge[0];
649 */
f641f6bd 650 fCurrentHit->fR = param->fR;
651
652 return fCurrentHit->fStatus = kTRUE;
653}
654
655Bool_t AliTPCTrackHitsV2::Next()
656{
657 //
658 //
659 if (!(fCurrentHit->fStatus))
660 return kFALSE;
661
662 fCurrentHit->fStackIndex++;
663
664 AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex);
665 if (fCurrentHit->fStackIndex>=param->fNHits){
666 fCurrentHit->fParamIndex++;
667 if (fCurrentHit->fParamIndex>=fArray->GetEntriesFast()){
668 fCurrentHit->fStatus=kFALSE;
669 return kFALSE;
670 }
671 param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex);
672 fCurrentHit->fStackIndex=0;
673 fCurrentHit->fR = param->fR;
674 }
675
676
677
678 Double_t ratio;
679 {
680 // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR);
681 Double_t dfi2 = param->fAn;
682 dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR;
683 // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR);
684 Double_t ddz2 = param->fTheta;
685 ddz2*=ddz2;
686 ratio = TMath::Sqrt(1.+ dfi2+ ddz2);
687 }
688
689 fCurrentHit->fR += fStep*param->fHitDistance[fCurrentHit->fStackIndex]/ratio;
690
691 Double_t dR = fCurrentHit->fR - param->fR;
692 Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR);
693 Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR);
fce0283f 694 /*
f641f6bd 695 fCurrentHit->fHit.fQ = param->fCharge[fCurrentHit->fStackIndex];
696 fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi));
697 fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi));
698 fCurrentHit->fHit.SetZ(z);
699 fCurrentHit->fHit.fSector = param->fVolumeID;
700 fCurrentHit->fHit.SetTrack(param->fTrackID);
fce0283f 701 */
702 ((AliTPChit*)fHit)->fQ = param->fCharge[fCurrentHit->fStackIndex];
703 ((AliTPChit*)fHit)->SetX(fCurrentHit->fR*TMath::Cos(fi));
704 ((AliTPChit*)fHit)->SetY(fCurrentHit->fR*TMath::Sin(fi));
705 ((AliTPChit*)fHit)->SetZ(z);
706 ((AliTPChit*)fHit)->fSector = param->fVolumeID;
707 ((AliTPChit*)fHit)->SetTrack(param->fTrackID);
708
f641f6bd 709 return kTRUE;
710}
711
fce0283f 712AliHit * AliTPCTrackHitsV2::GetHit()
f641f6bd 713{
714 //
fce0283f 715 return (fCurrentHit->fStatus)? fHit:0;
f641f6bd 716 //return &fCurrentHit->fHit;
717
718}
719
720AliTrackHitsParamV2 * AliTPCTrackHitsV2::GetParam()
721{
722 return (fCurrentHit->fStatus)? (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->fParamIndex):0;
723}