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Added NHard function.
[u/mrichter/AliRoot.git] / TPC / AliTPCTrackHits.cxx
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b6895dd8 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
cf98c13f 18///////////////////////////////////////////////////////////////////////////////
19// //
20// Time Projection Chamber track hits object //
21//
22// Origin: Marian Ivanov , GSI Darmstadt
23//
24// Class for storing simulated AliTPCHits for given track //
25// -average compression comparing to classical ClonesArray is //
26// around 5-7 (depending on the required hit precision) //
27// //
28//Begin_Html
29/*
30<img src="gif/AliTPCTrackHits.gif">
31*/
32//End_Html
33// //
34// //
35///////////////////////////////////////////////////////////////////////////////
36
6d171107 37#include <TError.h>
cf98c13f 38
6d171107 39#include "AliTPC.h"
40#include "AliTPCTrackHits.h"
ef00250a 41// Interface classes
42#include "AliTPCTrackHitsInterfaces.h"
cf98c13f 43
44ClassImp(AliTPCTrackHits)
45LClassImp(AliTrackHitsInfo)
46LClassImp(AliTrackHitsParam)
47LClassImp(AliHitInfo)
48
49Int_t AliTrackHitsInfo::fgCounter1 =0;
50Int_t AliTrackHitsInfo::fgCounter2 =0;
51Int_t AliTrackHitsParam::fgCounter1 =0;
52Int_t AliTrackHitsParam::fgCounter2 =0;
53Int_t AliHitInfo::fgCounter1 =0;
54Int_t AliHitInfo::fgCounter2 =0;
55Int_t AliTPCTrackHits::fgCounter1 =0;
56Int_t AliTPCTrackHits::fgCounter2 =0;
57const Double_t AliTPCTrackHits::fgkPrecision=1e-6; //precision
58const Double_t AliTPCTrackHits::fgkPrecision2=1e-20; //precision
59
60
6d171107 61class AliTPCCurrentHit {
982aff31 62 friend class AliTPCTrackHits;
63private:
64 AliTPChit fHit; // - hit in "standard" representation
cf98c13f 65 UInt_t fInfoIndex;// - current info pointer
66 UInt_t fParamIndex;// - current param pointer
67 UInt_t fStackIndex; // - current hit stack index
68 Double_t fR; //current Radius
69 Bool_t fStatus; //current status
70};
71
72
6d171107 73class AliTPCTempHitInfo {
982aff31 74 friend class AliTPCTrackHits;
75private:
76 enum { kStackSize = 100};
e15899a0 77 AliTPCTempHitInfo();
6d171107 78 AliTPCTempHitInfo(const AliTPCTempHitInfo &)
79 {::Fatal("copy ctor","Not implemented\n");}
80 AliTPCTempHitInfo & operator = (const AliTPCTempHitInfo &)
81 {::Fatal("= operator","Not implemented\n");return *this;}
82
cf98c13f 83 void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q);
84 void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q);
85 Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];}
86 void UpdateParam(Double_t maxdelta); //recal
87 void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2,
88 Double_t fSumX, Double_t fSumX2, Double_t fSumX3,
89 Double_t fSumX4, Int_t n,
90 Double_t &a, Double_t &b, Double_t &c);
91 void Fit(AliTrackHitsParam * param);
835b3d81 92 Double_t fSumDr; //fSumDr
93 Double_t fSumDr2; //fSumDr2
94 Double_t fSumDr3; // fSumDr3
95 Double_t fSumDr4; //fSumDr4
96 Double_t fSumDFi; //fSumDFi
97 Double_t fSumDFiDr; // fSumDFiDr
98 Double_t fSumDFiDr2;//fSumDFiDr2
99 Double_t fSumDZ; //fSumDZ
100 Double_t fSumDZDr; //fSumDZDr
101 Double_t fSumDZDr2; //fSumDZDr2
cf98c13f 102 Double_t fOldR; //previos r
982aff31 103 Double_t fPositionStack[3*kStackSize]; //position stack
104 UInt_t fQStack[kStackSize]; //Q stack
cf98c13f 105 UInt_t fStackIndex; //current stack index
106 UInt_t fInfoIndex; //current track info index
107 UInt_t fParamIndex; //current track parameters index
108 AliTrackHitsInfo * fInfo; //current track info
109 AliTrackHitsParam * fParam; //current track param
110};
111
112
113AliTPCTempHitInfo::AliTPCTempHitInfo()
114{
115 //
116 //set to default value
117 fSumDr=fSumDr2=fSumDr3=fSumDr4=
118 fSumDFi=fSumDFiDr=fSumDFiDr2=
119 fSumDZ=fSumDZDr=fSumDZDr2=0;
120 fStackIndex = 0;
121 fInfoIndex = 0;
122 fParamIndex = 0;
123}
124
125
126void AliTPCTempHitInfo::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q)
127{
128 //
129 //reset stack and sum parameters
130 //store line initial point
131 fSumDr=fSumDr2=fSumDr3=fSumDr4=
132 fSumDFi=fSumDFiDr=fSumDFiDr2=
133 fSumDZ=fSumDZDr=fSumDZDr2=0;
134 fStackIndex=0;
135 fParam->fR = r;
136 fOldR = r;
137 fParam->fZ = z;
138 fParam->fFi = fi;
139 fParam->fAn = 0.;
140 fParam->fAd = 0.;
141 fParam->fTheta =0.;
142 fParam->fThetaD =0.;
143 SetHit(r,z,fi,q);
144}
145
146void AliTPCTempHitInfo::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q)
147{
148 //
149 //add hit to the stack
150 //recalculate new estimete of line parameters
151 Double_t *f = GetPosition(fStackIndex);
152 f[0] = r;
153 f[1] = z;
154 f[2] = fi;
155 fQStack[fStackIndex]=q;
156 if (fStackIndex==0) return;
157 Double_t dr = (r-fParam->fR);
158 if (TMath::Abs(dr)<AliTPCTrackHits::fgkPrecision) dr =AliTPCTrackHits::fgkPrecision;
159 Double_t dfi = fi-fParam->fFi;
160 Double_t dz = z -fParam->fZ;
161 Double_t dr2 =dr*dr;
162 Double_t dr3 =dr2*dr;
163 Double_t dr4 =dr3*dr;
164 fSumDr +=dr;
165 fSumDr2+=dr2;
166 fSumDr3+=dr3;
167 fSumDr4+=dr4;
168 fSumDFi +=dfi;
169 fSumDFiDr+=dfi*dr;
170 fSumDFiDr2+=dfi*dr2;
171 fSumDZ +=dz;
172 fSumDZDr+=dz*dr;
173 fSumDZDr2+=dz*dr2;
174
175 //update fit parameters
176 //
177 Double_t det = fSumDr2*fSumDr4-fSumDr3*fSumDr3;
178 if (TMath::Abs(det)<AliTPCTrackHits::fgkPrecision2) return;
179 if ( ( fStackIndex>1 ) ){
180 fParam->fAn = (fSumDr4*fSumDFiDr-fSumDr3*fSumDFiDr2)/det;
181 fParam->fAd = (fSumDr2*fSumDFiDr2-fSumDr3*fSumDFiDr)/det;
182 }
183 else
184 fParam->fAn = fSumDFiDr/fSumDr2;
185 if ( ( fStackIndex>1 ) ){
186 fParam->fTheta = (fSumDr4*fSumDZDr-fSumDr3*fSumDZDr2)/det;
187 fParam->fThetaD= (fSumDr2*fSumDZDr2-fSumDr3*fSumDZDr)/det;
188 }
189 else
190 fParam->fTheta = fSumDZDr/fSumDr2;
191}
192
193
194void AliTPCTempHitInfo::UpdateParam(Double_t maxdelta)
195{
196 //recalc parameters not fixing origin point
197 if (fStackIndex>5){
198 Double_t a,b,c;
199 a=b=c=0;
200 Fit2(fSumDFi, fSumDFiDr, fSumDFiDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4,
201 fStackIndex, a,b,c);
202 if (TMath::Abs(a)<maxdelta){
203 fParam->fFi +=a/fParam->fR;
204 fParam->fAn = b;
205 fParam->fAd = c;
206 }
207 Fit2(fSumDZ, fSumDZDr, fSumDZDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4,
208 fStackIndex, a,b,c) ;
209 if (TMath::Abs(a)<maxdelta){
210 fParam->fZ +=a;
211 fParam->fTheta = b;
212 fParam->fThetaD = c;
213 }
214 }
215
216}
217void AliTPCTempHitInfo::Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2,
218 Double_t fSumX, Double_t fSumX2, Double_t fSumX3,
219 Double_t fSumX4, Int_t n,
220 Double_t &a, Double_t &b, Double_t &c)
221{
222 //fit of second order
223 Double_t det =
224 n* (fSumX2*fSumX4-fSumX3*fSumX3) -
225 fSumX* (fSumX*fSumX4-fSumX3*fSumX2)+
226 fSumX2* (fSumX*fSumX3-fSumX2*fSumX2);
227
228 if (TMath::Abs(det)> AliTPCTrackHits::fgkPrecision) {
229 a =
230 (fSumY * (fSumX2*fSumX4-fSumX3*fSumX3)-
231 fSumX *(fSumYX*fSumX4-fSumYX2*fSumX3)+
232 fSumX2*(fSumYX*fSumX3-fSumYX2*fSumX2))/det;
233 b=
234 (n*(fSumYX*fSumX4-fSumX3*fSumYX2)-
235 fSumY*(fSumX*fSumX4-fSumX3*fSumX2)+
236 fSumX2*(fSumX*fSumYX2-fSumYX*fSumX2))/det;
237 c=
238 (n*(fSumX2*fSumYX2-fSumYX*fSumX3)-
239 fSumX*(fSumX*fSumYX2-fSumYX*fSumX2)+
240 fSumY*(fSumX*fSumX3-fSumX2*fSumX2))/det;
241 }
242}
243
244void AliTPCTempHitInfo::Fit(AliTrackHitsParam * param)
245{
246 // fit fixing first and the last point
247 //result stored in new param
248 Double_t dx2 = (GetPosition(fStackIndex))[0]-fParam->fR;
249 Double_t det = fSumDr4+dx2*fSumDr2-2*dx2*fSumDr3;
250 if ( (TMath::Abs(det)> AliTPCTrackHits::fgkPrecision) &&
251 ((TMath::Abs(dx2)> AliTPCTrackHits::fgkPrecision))){
252 Double_t dfi2 = (GetPosition(fStackIndex))[1]-fParam->fFi;
253 param->fAd = (fSumDFiDr2+dfi2*fSumDr-dx2*fSumDFiDr-dfi2*fSumDr3/dx2)/det;
254 param->fAn = (dfi2-param->fAd*dx2*dx2)/dx2;
255
256 Double_t dz2 = (GetPosition(fStackIndex))[1]-fParam->fZ;
257 param->fTheta = (fSumDZDr2+dz2*fSumDr-dx2*fSumDZDr-dz2*fSumDr3/dx2)/det;
258 param->fTheta = (dz2-param->fAd*dx2*dx2)/dx2;
259 }
260
261}
262
263
264
265
266AliTPCTrackHits::AliTPCTrackHits()
267{
268 //
269 //default constructor
270 //
271 const Float_t kHitPrecision=0.002; //default precision for hit position in cm
272 const Float_t kStep =0.003; //30 mum step
273 const UShort_t kMaxDistance =100; //maximum distance 100
274
275 fPrecision=kHitPrecision; //precision in cm
276 fStep = kStep; //step size
277 fMaxDistance = kMaxDistance; //maximum distance
278 fTempInfo =0;
279 fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo");
280 fTrackHitsParam = new AliObjectArray("AliTrackHitsParam");
633d3715 281 fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo");
cf98c13f 282 fCurrentHit = new AliTPCCurrentHit;
283 fgCounter1++;
284 fgCounter2++;
285
286}
287
835b3d81 288AliTPCTrackHits::AliTPCTrackHits(const AliTPCTrackHits& r) : TObject(r)
289{
e15899a0 290 //dummy
291}
292AliTPCTrackHits &AliTPCTrackHits::operator=(const AliTPCTrackHits& /* r */)
293{
294 //dummy
295 return *this;
835b3d81 296}
835b3d81 297
cf98c13f 298AliTPCTrackHits::~AliTPCTrackHits()
299{
300 //
301 //default destructor
302 //
303 if (fTrackHitsInfo) delete fTrackHitsInfo;
304 if (fTrackHitsParam) delete fTrackHitsParam;
305 if (fHitsPosAndQ) delete fHitsPosAndQ;
306 if (fCurrentHit) delete fCurrentHit;
307 if (fTempInfo) delete fTempInfo;
308 fgCounter1--;
309}
310
311void AliTPCTrackHits::Clear()
312{
313 //
314 //clear object
633d3715 315 fTrackHitsInfo->Clear();
316 fTrackHitsParam->Clear();
317 //fTrackHitsInfo->Resize(0);
318 //fTrackHitsParam->Resize(0);
cf98c13f 319 fHitsPosAndQ->Clear();
320
321 if (fTempInfo){
322 delete fTempInfo;
323 fTempInfo =0;
324 }
325}
326
327
328void AliTPCTrackHits::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x,
329 Double_t y, Double_t z,Int_t q)
330{
835b3d81 331 //add hits (cartesian)
cf98c13f 332 Double_t r = TMath::Sqrt(x*x+y*y);
333 Double_t fi = TMath::ACos(x/r);
334 if (y<0) fi*=-1.;
335 AddHit(volumeID,trackID,r,z,fi,q);
336}
337
338void AliTPCTrackHits::AddHit(Int_t volumeID, Int_t trackID,
339 Double_t r, Double_t z, Double_t fi, Int_t q)
340{
341 //
342 Bool_t diff=kFALSE;
343 if (!fTempInfo) { //initialsation of track
344 fTempInfo = new AliTPCTempHitInfo;
345 //
346 if (fTrackHitsInfo->GetCapacity()<10) fTrackHitsInfo->Reserve(10);
347 fTrackHitsInfo->Resize(1);
348 fTempInfo->fInfoIndex =0;
349 if (fTrackHitsParam->GetCapacity()<100) fTrackHitsParam->Reserve(100);
350 fTrackHitsParam->Resize(1);
351 //
352 fTempInfo->fInfo =
353 (AliTrackHitsInfo*) (fTrackHitsInfo->At(0));
354 fTempInfo->fInfo->fVolumeID = volumeID;
355 fTempInfo->fInfo->fTrackID = trackID;
356 fTempInfo->fInfo->fHitParamIndex =0;
357 fTempInfo->fInfoIndex = 0;
358 //
359 fTempInfo->fParam =
360 (AliTrackHitsParam*) (fTrackHitsParam->At(0));
361 fTempInfo->fParamIndex = 0;
362 fTempInfo->NewParam(r,z,fi,q);
363 return;
364 }
365
366 Int_t size = fHitsPosAndQ->GetSize();
367 if (size>(Int_t)fTempInfo->fParamIndex) {
368 fTempInfo->fParamIndex++;
369 if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize())
370 fTrackHitsParam->Resize(fTempInfo->fParamIndex+1);
371 fTempInfo->fParam =
372 (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex));
373 fTempInfo->NewParam(r,z,fi,q);
374 return;
375 }
376
377
378 // if new volume or new trackID
379 if ( (volumeID!=fTempInfo->fInfo->fVolumeID) ||
380 (trackID!=fTempInfo->fInfo->fTrackID)){
381 diff=kTRUE;
382
383 FlushHitStack(kTRUE);
384
385 fTempInfo->fInfoIndex++;
386 if (fTempInfo->fInfoIndex+1>fTrackHitsInfo->GetSize())
387 fTrackHitsInfo->Resize(fTempInfo->fInfoIndex+1);
388 fTempInfo->fInfo =
389 (AliTrackHitsInfo*) (fTrackHitsInfo->At(fTempInfo->fInfoIndex));
390 fTempInfo->fInfo->fVolumeID = volumeID;
391 fTempInfo->fInfo->fTrackID = trackID;
392 fTempInfo->fInfo->fHitParamIndex =fTempInfo->fParamIndex+1;
393 // FlushHitStack(kTRUE);
394
395 fTempInfo->fParamIndex++;
396 if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize())
397 fTrackHitsParam->Resize(fTempInfo->fParamIndex+1);
398 fTempInfo->fParam =
399 (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex));
400 fTempInfo->NewParam(r,z,fi,q);
401 return;
402 }
403
404 //calculate current fit precission to next point
405 AliTrackHitsParam &param = *(fTempInfo->fParam);
406 Double_t dd=0;
407 Double_t dl=0;
408 Double_t ratio=0;
409 Double_t dr,dz,dfi,ddz,ddfi;
410 Double_t drhit,ddl;
411 dr=dz=dfi=ddz=ddfi=0;
412 drhit = r-fTempInfo->fOldR;
413 {
414 //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR);
415 Double_t dfi2 = param.fAn;
416 dfi2*=dfi2*fTempInfo->fOldR*fTempInfo->fOldR;
417 //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR);
418 Double_t ddz2 = param.fTheta;
419 ddz2*=ddz2;
420 ratio = TMath::Sqrt(1.+ dfi2+ ddz2);
421 }
8217f168 422 //
423
424
425 dl = (TMath::Abs(drhit*ratio/fStep)<32000) ? fStep * Short_t(TMath::Nint(drhit*ratio/fStep)):0;
cf98c13f 426 ddl = dl - drhit*ratio;
427 fTempInfo->fOldR += dl/ratio;
428
429 if (fTempInfo->fStackIndex>2){
430 dr = r-param.fR;
431 dz = z-param.fZ;
432 dfi = fi-param.fFi;
433 ddz = dr*param.fTheta+dr*dr*param.fThetaD-dz;
434 ddfi= dr*param.fAn+dr*dr*param.fAd-dfi;
435 dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl);
436 //
437 }
438 //safety factor 1.25
439 if ( ( (dd*1.25>fPrecision) ) ||
982aff31 440 (fTempInfo->fStackIndex+4>fTempInfo->kStackSize) ||
cf98c13f 441 (TMath::Abs(dl/fStep)>fMaxDistance) )
442 diff=kTRUE;
443 else{
444 fTempInfo->fStackIndex++;
445 fTempInfo->SetHit(r,z,fi,q);
446 return;
447 }
448 //if parameter changed
449 if (FlushHitStack(kFALSE)){ //if full buffer flushed
450 fTempInfo->fParamIndex++;
451 if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize())
452 fTrackHitsParam->Resize(fTempInfo->fParamIndex+1);
453 fTempInfo->fParam =
454 (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex));
455 fTempInfo->NewParam(r,z,fi,q);
456 }
457 else{
458 fTempInfo->fStackIndex++;
459 fTempInfo->SetHit(r,z,fi,q);
460 }
461}
462
463Bool_t AliTPCTrackHits::FlushHitStack(Bool_t force)
464{
465 //
466 //write fHitsPosAndQ information from the stack to te arrays
467 if (!fTempInfo) return kFALSE;
468 Int_t size = fHitsPosAndQ->GetSize();
469
470 if ( (size>0)&&(size!=(Int_t)fTempInfo->fParamIndex)) return kFALSE;
471
472 if (fHitsPosAndQ->Push(fTempInfo->fStackIndex+1)!=fTempInfo->fParamIndex){
473 cout<<"internal error - contact MI\n";
474 return kFALSE;
475 }
476 AliHitInfo * info;
477
478 AliTrackHitsParam & param = *(fTempInfo->fParam);
479 //recalculate track parameter not fixing first point
480 fTempInfo->UpdateParam(fStep/4.);
481 //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point
482
483 Double_t oldr = param.fR;
484 //cout<<"C3"<<fTempInfo->fStackIndex<<"\n"<<flush;
485 UInt_t i;
486 Double_t dd;
487 for (i=0; i <= fTempInfo->fStackIndex; i++){
488 Double_t * position = fTempInfo->GetPosition(i);
489 Double_t dr = position[0]-oldr;
490 Double_t ratio;
491 {
492 //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR);
493 Double_t dfi2 = param.fAn;
494 dfi2*=dfi2*oldr*oldr;
495 //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR);
496 Double_t ddz2 = param.fTheta;
497 ddz2*=ddz2;
498 ratio = TMath::Sqrt(1.+ dfi2+ ddz2);
499 }
500
8217f168 501 Double_t dl = (TMath::Abs(dr*ratio/fStep)<32000) ? fStep*(Short_t)TMath::Nint(dr*ratio/fStep):0;
cf98c13f 502 dr = dl/ratio;
503 oldr+=dr;
504 //calculate precission
505 AliTrackHitsParam &param = *(fTempInfo->fParam);
506 //real deltas
507 Double_t dr1= position[0]-param.fR;
508 Double_t dz = position[1]-param.fZ;
509
510 Double_t dfi = position[2]-param.fFi;
511 //extrapolated deltas
512 Double_t dr2 = oldr-param.fR;
513 Double_t ddr = dr2-dr1;
514 Double_t ddz = dr2*param.fTheta+dr2*dr2*param.fThetaD-dz;
515 Double_t ddfi= dr2*param.fAn+dr2*dr2*param.fAd-dfi;
516 dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr);
517
518 if ( (dd>fPrecision) ){
519 if (i==0){
520 param.fAn = 0;
521 param.fAd = 0;
522 param.fTheta =0;
523 param.fThetaD =0;
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 dl = 0;
527 dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr);
528 }
529 else
530 break;
531 }
532
533 info = (AliHitInfo*)(fHitsPosAndQ->At(fTempInfo->fParamIndex,i));
8217f168 534 info->fHitDistance = (TMath::Abs(dl/fStep)<32000) ?Short_t(TMath::Nint(dl/fStep)):0;
cf98c13f 535 info->fCharge = Short_t(fTempInfo->fQStack[i]);
536 /*
537 cout<<"C2";
538 cout<<" "<<fTempInfo->fStackIndex<<" \t";
539 cout<<" "<<i<<" \t";
540 cout<<position[0]<<"\t";
541 cout<<position[1]<<"\t";
542 cout<<position[2]<<"\t";
543 cout<<param.fAn<<"\t";
544 cout<<param.fTheta<<"\t";
545 cout<<dr1<<"\t"<<ddr<<"\t"<<ddz<<"\t"<<ddfi<<"\t"<<dd<<"\n"<<flush;
546 */
547 }
548
549 if (i<=fTempInfo->fStackIndex){ //if previous iteration not succesfull
550 fHitsPosAndQ->Resize(fTempInfo->fParamIndex,i);
551 //
552 fTempInfo->fParamIndex++;
553 if (fTempInfo->fParamIndex+1>fTrackHitsParam->GetSize())
554 fTrackHitsParam->Resize(fTempInfo->fParamIndex+1);
555 fTempInfo->fParam =
556 (AliTrackHitsParam*) (fTrackHitsParam->At(fTempInfo->fParamIndex));
557 Double_t * p = fTempInfo->GetPosition(i);
558 UInt_t index2 = fTempInfo->fStackIndex;
559 fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->fQStack[i]);
560 if (i+1<=index2) FlushHitStack2(i+1,index2);
561
562 if (force) return FlushHitStack(kTRUE);
563 return kFALSE;
564 }
565 return kTRUE;
566}
567
568
569void AliTPCTrackHits::FlushHitStack2(Int_t index1, Int_t index2)
570{
571 //
572 // second iteration flush stack
573 // call only for hits where first iteration were not succesfully interpolated
574 Double_t * positionstack = new Double_t[3*(index2-index1+1)];
575 UInt_t * qstack = new UInt_t[index2-index1+1];
576 memcpy(positionstack, &fTempInfo->fPositionStack[3*index1],
577 (3*(index2-index1+1))*sizeof(Double_t));
578 memcpy(qstack, &fTempInfo->fQStack[index1],(index2-index1+1)*sizeof(UInt_t));
579 Double_t *p = positionstack;
580 for (Int_t j=0; j<=index2-index1;j++){
581 fTempInfo->fStackIndex++;
582 fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j]);
583 }
584 delete []positionstack;
585 delete []qstack;
586}
587
588
589
590
591
592
593
594
595
596Bool_t AliTPCTrackHits::First()
597{
598 //
599 //set Current hit for the first hit
600 //
601 AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(0);
602 AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(0);
603 AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(0,0);
604
605 if (!(info) || !(param) || !(hinfo) ) {
606 fCurrentHit->fStatus = kFALSE;
607 return kFALSE;
608 }
609
610 fCurrentHit->fInfoIndex = 0;
611 fCurrentHit->fParamIndex = 0;
612 fCurrentHit->fStackIndex = 0;
613
614 fCurrentHit->fHit.fSector = info->fVolumeID;
615 fCurrentHit->fHit.SetTrack(info->fTrackID);
616 fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi));
617 fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi));
618 fCurrentHit->fHit.SetZ(param->fZ);
619 fCurrentHit->fHit.fQ = hinfo->fCharge;
620
621 fCurrentHit->fR = param->fR;
622
623 return fCurrentHit->fStatus = kTRUE;
624}
625
25419831 626
627/*
cf98c13f 628Bool_t AliTPCTrackHits::Next()
629{
630 //
631 //
632 if (!(fCurrentHit->fStatus))
633 return kFALSE;
634
635 fCurrentHit->fStackIndex++;
636 AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex,
637 fCurrentHit->fStackIndex);
638 AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex);
639 AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex);
640
641 if (!hinfo) {
642 hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex+1, 0);
643 if (!hinfo)
644 return fCurrentHit->fStatus = kFALSE;
645 if (hinfo){
646 fCurrentHit->fParamIndex++;
647 fCurrentHit->fStackIndex = 0;
648 param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex);
649 if (!param)
650 return fCurrentHit->fStatus = kFALSE;
651 fCurrentHit->fR = param->fR;
652
653 if ((fCurrentHit->fInfoIndex+1<fTrackHitsInfo->GetSize())
654 &&((info+1)->fHitParamIndex<=fCurrentHit->fParamIndex)){
655 fCurrentHit->fInfoIndex++;
656 info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex);
657 if (!info)
658 return fCurrentHit->fStatus = kFALSE;
659 fCurrentHit->fHit.fSector = info->fVolumeID;
660 fCurrentHit->fHit.SetTrack(info->fTrackID);
661 }
662 }
663 }
664 Double_t ratio;
665 {
666 // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR);
667 Double_t dfi2 = param->fAn;
668 dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR;
669 // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR);
670 Double_t ddz2 = param->fTheta;
671 ddz2*=ddz2;
672 ratio = TMath::Sqrt(1.+ dfi2+ ddz2);
673 }
674
675 fCurrentHit->fHit.fQ = hinfo->fCharge;
676 fCurrentHit->fR += fStep*hinfo->fHitDistance/ratio;
677 Double_t dR = fCurrentHit->fR - param->fR;
678 //Double_t dR =0;
679 Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR);
680 Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR);
681
682 fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi));
683 fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi));
684 fCurrentHit->fHit.SetZ(z);
685 return kTRUE;
686}
25419831 687
688*/
835b3d81 689AliTPChit * AliTPCTrackHits::GetHit() const
cf98c13f 690{
691 //
692 return (fCurrentHit->fStatus)? &fCurrentHit->fHit:0;
693 //return &fCurrentHit->fHit;
694
695}
696
25419831 697
698
699Bool_t AliTPCTrackHits::Next(Int_t id)
700{
701 //
702 //
703 if (!(fCurrentHit->fStatus))
704 return kFALSE;
705
706 // fCurrentHit->fStackIndex++;
707 AliHitInfo * hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex,
708 fCurrentHit->fStackIndex);
709 AliTrackHitsInfo *info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex);
710 if (!info) {
711 fCurrentHit->fStatus = kFALSE;
712 return kFALSE;
713 }
714 AliTrackHitsParam *param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex);
715
716 if ( (id>=0) && (info!=0) && (info->fVolumeID!=id)){
717 fCurrentHit->fInfoIndex++;
718 info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex);
719 if (!info) {
720 fCurrentHit->fStatus = kFALSE;
721 return kFALSE;
722 }
723 fCurrentHit->fParamIndex = info->fHitParamIndex;
724 param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex);
725 fCurrentHit->fStackIndex =0;
726 fCurrentHit->fR = param->fR;
727 return Next(id);
728 }
729 if (!info) {
730 fCurrentHit->fStatus = kFALSE;
731 return kFALSE;
732 }
733 if (!hinfo) {
734 hinfo = (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex+1, 0);
735 if (!hinfo){
736 fCurrentHit->fStatus = kFALSE;
737 return kFALSE;
738 }
739 if (hinfo){
740 fCurrentHit->fParamIndex++;
741 fCurrentHit->fStackIndex = 0;
742 param = (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex);
743 if (!param){
744 fCurrentHit->fStatus = kFALSE;
745 return kFALSE;
746 }
747 fCurrentHit->fR = param->fR;
748
749 if ((fCurrentHit->fInfoIndex+1<fTrackHitsInfo->GetSize())
750 &&((info+1)->fHitParamIndex<=fCurrentHit->fParamIndex)){
751 fCurrentHit->fInfoIndex++;
752 info = (AliTrackHitsInfo *)fTrackHitsInfo->At(fCurrentHit->fInfoIndex);
753 if (!info){
754 fCurrentHit->fStatus = kFALSE;
755 return kFALSE;
756 }
757 if ( (id>=0) && (info!=0) && (info->fVolumeID!=id)){
758 return Next(id);
759 }
760 fCurrentHit->fHit.fSector = info->fVolumeID;
761 fCurrentHit->fHit.SetTrack(info->fTrackID);
762 }
763 }
764 }
765 Double_t ratio;
766 {
767 // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR);
768 Double_t dfi2 = param->fAn;
769 dfi2*=dfi2*fCurrentHit->fR*fCurrentHit->fR;
770 // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR);
771 Double_t ddz2 = param->fTheta;
772 ddz2*=ddz2;
773 ratio = TMath::Sqrt(1.+ dfi2+ ddz2);
774 }
775
776 fCurrentHit->fHit.fQ = hinfo->fCharge;
777 fCurrentHit->fR += fStep*hinfo->fHitDistance/ratio;
778 Double_t dR = fCurrentHit->fR - param->fR;
779 //Double_t dR =0;
780 Double_t fi = param->fFi + (param->fAn*dR+param->fAd*dR*dR);
781 Double_t z = param->fZ + (param->fTheta*dR+param->fThetaD*dR*dR);
782
783 fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi));
784 fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi));
785 fCurrentHit->fHit.SetZ(z);
786 fCurrentHit->fHit.fSector = info->fVolumeID;
787 fCurrentHit->fHit.SetTrack(info->fTrackID);
788 //
789 fCurrentHit->fStatus = kTRUE;
790 fCurrentHit->fStackIndex++;
791 return kTRUE;
792}
793
794
cf98c13f 795AliTrackHitsParam * AliTPCTrackHits::GetParam()
796{
797 //
798 return (fCurrentHit->fStatus)? (AliTrackHitsParam *)fTrackHitsParam->At(fCurrentHit->fParamIndex) :0;
799}
800
801AliHitInfo * AliTPCTrackHits::GetHitInfo()
802{
803 //
804 return (fCurrentHit->fStatus)?
805 (AliHitInfo *)fHitsPosAndQ->At(fCurrentHit->fParamIndex,fCurrentHit->fStackIndex) :0;
806}
807
808
809