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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 | // // | |
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 | /////////////////////////////////////////////////////////////////////////////// | |
54 | // | |
55 | ||
56 | #include <TClonesArray.h> | |
57 | #include <TMath.h> | |
58 | ||
59 | #include "AliTPCTrackHitsV2.h" | |
60 | #include "AliTPC.h" | |
61 | ||
62 | ||
63 | ||
64 | ClassImp(AliTPCTrackHitsV2) | |
65 | ClassImp(AliTrackHitsParamV2) | |
66 | ||
67 | // | |
68 | Int_t AliTrackHitsParamV2::fgCounter1 =0; | |
69 | Int_t AliTrackHitsParamV2::fgCounter2 =0; | |
70 | // | |
71 | Int_t AliTPCTrackHitsV2::fgCounter1 =0; | |
72 | Int_t AliTPCTrackHitsV2::fgCounter2 =0; | |
73 | // | |
74 | const Double_t AliTPCTrackHitsV2::fgkPrecision=1e-6; //precision | |
75 | const Double_t AliTPCTrackHitsV2::fgkPrecision2=1e-20; //precision | |
76 | const Double_t AliTPCTrackHitsV2::fgkTimePrecision=20.e-9; //hit time precision | |
77 | ||
78 | ||
79 | ||
80 | ||
81 | class AliTPCTempHitInfoV2 { | |
82 | public: | |
83 | AliTPCTempHitInfoV2(); | |
84 | void SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); | |
85 | UInt_t GetStackIndex() const {return fStackIndex;} | |
86 | void SetStackIndex(UInt_t i) {fStackIndex=i;} | |
87 | UInt_t GetParamIndex() const {return fParamIndex;} | |
88 | void SetParamIndex(UInt_t i) {fParamIndex=i;} | |
89 | Float_t GetTimeStack(Int_t i) const {return fTimeStack[i];} | |
90 | const Float_t* GetTimeStackP(Int_t i) const {return &fTimeStack[i];} | |
91 | UInt_t GetQStack(Int_t i) const {return fQStack[i];} | |
92 | const UInt_t* GetQStackP(Int_t i) const {return &fQStack[i];} | |
93 | Double_t * GetPosition(Int_t index){return &fPositionStack[index*3];} | |
94 | Double_t GetOldR() const {return fOldR;} | |
95 | void SetOldR(Double_t r) {fOldR=r;} | |
96 | ||
97 | ||
98 | AliTrackHitsParamV2 * GetParam() const {return fParam;} | |
99 | void SetParam(AliTrackHitsParamV2 * p) {fParam=p;} | |
100 | void UpdateParam(Double_t maxdelta); //recal | |
101 | void NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time); | |
102 | enum {kStackSize = 10000}; | |
103 | ||
104 | protected: | |
105 | AliTPCTempHitInfoV2(const AliTPCTempHitInfoV2 &hit); | |
106 | AliTPCTempHitInfoV2& operator = (const AliTPCTempHitInfoV2 &hit); | |
107 | void Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
108 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
109 | Double_t fSumX4, Int_t n, | |
110 | Double_t &a, Double_t &b, Double_t &c); | |
111 | void Fit(AliTrackHitsParamV2 * param); | |
112 | Double_t fSumDr; // Sum of Dr | |
113 | Double_t fSumDr2; // Square of sum of Dr | |
114 | Double_t fSumDr3; // Cube of sum of Dr | |
115 | Double_t fSumDr4; // Fourth power of sum of Dr | |
116 | Double_t fSumDFi; // Sum of DFi | |
117 | Double_t fSumDFiDr; // Sum of DFiDr | |
118 | Double_t fSumDFiDr2;// Sum of square of DFiDr | |
119 | Double_t fSumDZ; // Sum of DZ | |
120 | Double_t fSumDZDr; // Sum of DZDr | |
121 | Double_t fSumDZDr2; // Sum of square of DZDr | |
122 | Double_t fOldR; //previos r | |
123 | Double_t fPositionStack[3*kStackSize]; //position stack | |
124 | UInt_t fQStack[kStackSize]; //Q stack | |
125 | Float_t fTimeStack[kStackSize]; //time stack | |
126 | UInt_t fStackIndex; //current stack index | |
127 | // UInt_t fInfoIndex; //current track info index | |
128 | UInt_t fParamIndex; //current track parameters index | |
129 | // AliTrackHitsInfo * fInfo; //current track info | |
130 | AliTrackHitsParamV2 * fParam; //current track param | |
131 | }; | |
132 | ||
133 | ||
134 | AliTPCTempHitInfoV2::AliTPCTempHitInfoV2() | |
135 | :fSumDr(0.), | |
136 | fSumDr2(0.), | |
137 | fSumDr3(0.), | |
138 | fSumDr4(0.), | |
139 | fSumDFi(0.), | |
140 | fSumDFiDr(0.), | |
141 | fSumDFiDr2(0.), | |
142 | fSumDZ(0.), | |
143 | fSumDZDr(0.), | |
144 | fSumDZDr2(0.), | |
145 | fOldR(0.), | |
146 | fStackIndex(0), | |
147 | fParamIndex(0), | |
148 | fParam(0) | |
149 | { | |
150 | // | |
151 | // Standard constructor | |
152 | // set to default value | |
153 | // | |
154 | fSumDr=fSumDr2=fSumDr3=fSumDr4= | |
155 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
156 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
157 | fStackIndex = 0; | |
158 | // fInfoIndex = 0; | |
159 | fParamIndex = 0; | |
160 | for(Int_t i=0;i<3*kStackSize;i++) fPositionStack[i]=0.; | |
161 | for(Int_t i=0;i<kStackSize;i++){ | |
162 | fQStack[i]=0; | |
163 | fTimeStack[i]=0.; | |
164 | } | |
165 | } | |
166 | ||
167 | ||
168 | void AliTPCTempHitInfoV2::NewParam(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) | |
169 | { | |
170 | // | |
171 | //reset stack and sum parameters | |
172 | //store line initial point | |
173 | // | |
174 | fSumDr=fSumDr2=fSumDr3=fSumDr4= | |
175 | fSumDFi=fSumDFiDr=fSumDFiDr2= | |
176 | fSumDZ=fSumDZDr=fSumDZDr2=0; | |
177 | fStackIndex=0; | |
178 | fParam->SetR(r); | |
179 | fOldR = r; | |
180 | fParam->SetZ(z); | |
181 | fParam->SetFi(fi); | |
182 | fParam->SetAn(0.); | |
183 | fParam->SetAd(0.); | |
184 | fParam->SetTheta(0.); | |
185 | fParam->SetThetaD(0.); | |
186 | SetHit(r,z,fi,q,time); | |
187 | } | |
188 | ||
189 | void AliTPCTempHitInfoV2::SetHit(Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) | |
190 | { | |
191 | // | |
192 | //add hit to the stack | |
193 | //recalculate new estimete of line parameters | |
194 | Double_t *f = GetPosition(fStackIndex); | |
195 | f[0] = r; | |
196 | f[1] = z; | |
197 | f[2] = fi; | |
198 | fQStack[fStackIndex]=q; | |
199 | fTimeStack[fStackIndex]=time; | |
200 | if (fStackIndex==0) return; | |
201 | Double_t dr = (r-fParam->GetR()); | |
202 | if (TMath::Abs(dr)<AliTPCTrackHitsV2::GetKPrecision()) dr =AliTPCTrackHitsV2::GetKPrecision(); | |
203 | Double_t dfi = fi-fParam->GetFi(); | |
204 | Double_t dz = z -fParam->GetZ(); | |
205 | Double_t dr2 =dr*dr; | |
206 | Double_t dr3 =dr2*dr; | |
207 | Double_t dr4 =dr3*dr; | |
208 | fSumDr +=dr; | |
209 | fSumDr2+=dr2; | |
210 | fSumDr3+=dr3; | |
211 | fSumDr4+=dr4; | |
212 | fSumDFi +=dfi; | |
213 | fSumDFiDr+=dfi*dr; | |
214 | fSumDFiDr2+=dfi*dr2; | |
215 | fSumDZ +=dz; | |
216 | fSumDZDr+=dz*dr; | |
217 | fSumDZDr2+=dz*dr2; | |
218 | ||
219 | //update fit parameters | |
220 | // | |
221 | Double_t det = fSumDr2*fSumDr4-fSumDr3*fSumDr3; | |
222 | if (TMath::Abs(det)<AliTPCTrackHitsV2::GetKPrecision2()) return; | |
223 | if ( ( fStackIndex>1 ) ){ | |
224 | fParam->SetAn((fSumDr4*fSumDFiDr-fSumDr3*fSumDFiDr2)/det); | |
225 | fParam->SetAd((fSumDr2*fSumDFiDr2-fSumDr3*fSumDFiDr)/det); | |
226 | } | |
227 | else | |
228 | fParam->SetAn(fSumDFiDr/fSumDr2); | |
229 | if ( ( fStackIndex>1 ) ){ | |
230 | fParam->SetTheta((fSumDr4*fSumDZDr-fSumDr3*fSumDZDr2)/det); | |
231 | fParam->SetThetaD((fSumDr2*fSumDZDr2-fSumDr3*fSumDZDr)/det); | |
232 | } | |
233 | else | |
234 | fParam->SetTheta(fSumDZDr/fSumDr2); | |
235 | } | |
236 | ||
237 | ||
238 | void AliTPCTempHitInfoV2::UpdateParam(Double_t maxdelta) | |
239 | { | |
240 | // | |
241 | // recalc parameters not fixing origin point | |
242 | // | |
243 | if (fStackIndex>5){ | |
244 | Double_t a,b,c; | |
245 | a=b=c=0; | |
246 | Fit2(fSumDFi, fSumDFiDr, fSumDFiDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
247 | fStackIndex, a,b,c); | |
248 | if (TMath::Abs(a)<maxdelta){ | |
249 | fParam->SetFi(fParam->GetFi()+a/fParam->GetR()); | |
250 | fParam->SetAn(b); | |
251 | fParam->SetAd(c); | |
252 | } | |
253 | Fit2(fSumDZ, fSumDZDr, fSumDZDr2, fSumDr,fSumDr2,fSumDr3,fSumDr4, | |
254 | fStackIndex, a,b,c) ; | |
255 | if (TMath::Abs(a)<maxdelta){ | |
256 | fParam->SetZ(fParam->GetZ()+a); | |
257 | fParam->SetTheta(b); | |
258 | fParam->SetThetaD(c); | |
259 | } | |
260 | } | |
261 | ||
262 | } | |
263 | ||
264 | void AliTPCTempHitInfoV2::Fit2(Double_t fSumY, Double_t fSumYX, Double_t fSumYX2, | |
265 | Double_t fSumX, Double_t fSumX2, Double_t fSumX3, | |
266 | Double_t fSumX4, Int_t n, | |
267 | Double_t &a, Double_t &b, Double_t &c) | |
268 | { | |
269 | // | |
270 | // fit of second order | |
271 | // | |
272 | Double_t det = | |
273 | n* (fSumX2*fSumX4-fSumX3*fSumX3) - | |
274 | fSumX* (fSumX*fSumX4-fSumX3*fSumX2)+ | |
275 | fSumX2* (fSumX*fSumX3-fSumX2*fSumX2); | |
276 | ||
277 | if (TMath::Abs(det)> AliTPCTrackHitsV2::GetKPrecision()) { | |
278 | a = | |
279 | (fSumY * (fSumX2*fSumX4-fSumX3*fSumX3)- | |
280 | fSumX *(fSumYX*fSumX4-fSumYX2*fSumX3)+ | |
281 | fSumX2*(fSumYX*fSumX3-fSumYX2*fSumX2))/det; | |
282 | b= | |
283 | (n*(fSumYX*fSumX4-fSumX3*fSumYX2)- | |
284 | fSumY*(fSumX*fSumX4-fSumX3*fSumX2)+ | |
285 | fSumX2*(fSumX*fSumYX2-fSumYX*fSumX2))/det; | |
286 | c= | |
287 | (n*(fSumX2*fSumYX2-fSumYX*fSumX3)- | |
288 | fSumX*(fSumX*fSumYX2-fSumYX*fSumX2)+ | |
289 | fSumY*(fSumX*fSumX3-fSumX2*fSumX2))/det; | |
290 | } | |
291 | } | |
292 | ||
293 | void AliTPCTempHitInfoV2::Fit(AliTrackHitsParamV2 * param) | |
294 | { | |
295 | // | |
296 | // fit fixing first and the last point | |
297 | // result stored in new param | |
298 | // | |
299 | Double_t dx2 = (GetPosition(fStackIndex))[0]-fParam->GetR(); | |
300 | Double_t det = fSumDr4+dx2*fSumDr2-2*dx2*fSumDr3; | |
301 | if ( (TMath::Abs(det)> AliTPCTrackHitsV2::GetKPrecision()) && | |
302 | ((TMath::Abs(dx2)> AliTPCTrackHitsV2::GetKPrecision()))){ | |
303 | Double_t dfi2 = (GetPosition(fStackIndex))[1]-fParam->GetFi(); | |
304 | param->SetAd((fSumDFiDr2+dfi2*fSumDr-dx2*fSumDFiDr-dfi2*fSumDr3/dx2)/det); | |
305 | param->SetAn((dfi2-param->GetAd()*dx2*dx2)/dx2); | |
306 | ||
307 | Double_t dz2 = (GetPosition(fStackIndex))[1]-fParam->GetZ(); | |
308 | param->SetTheta((fSumDZDr2+dz2*fSumDr-dx2*fSumDZDr-dz2*fSumDr3/dx2)/det); | |
309 | param->SetTheta((dz2-param->GetAd()*dx2*dx2)/dx2); | |
310 | } | |
311 | ||
312 | } | |
313 | ||
314 | AliTrackHitsParamV2::AliTrackHitsParamV2():TObject(), | |
315 | fTrackID(0), | |
316 | fVolumeID(0), | |
317 | fR(0.), | |
318 | fZ(0.), | |
319 | fFi(0.), | |
320 | fAn(0.), | |
321 | fAd(0.), | |
322 | fTheta(0.), | |
323 | fThetaD(0.), | |
324 | fNHits(0), | |
325 | fHitDistance(0), | |
326 | fCharge(0), | |
327 | fTime(0) | |
328 | { | |
329 | // | |
330 | // default constructor | |
331 | // | |
332 | fgCounter1++; | |
333 | fgCounter2++; | |
334 | } | |
335 | ||
336 | AliTrackHitsParamV2::~AliTrackHitsParamV2() | |
337 | { | |
338 | // | |
339 | // Standard destructor | |
340 | // | |
341 | fgCounter1--; | |
342 | if (fHitDistance) { | |
343 | delete[]fHitDistance; | |
344 | fHitDistance=0; | |
345 | } | |
346 | if (fCharge){ | |
347 | delete[]fCharge; | |
348 | fCharge =0; | |
349 | } | |
350 | if (fTime){ | |
351 | delete[]fTime; | |
352 | fTime =0; | |
353 | } | |
354 | } | |
355 | ||
356 | Float_t AliTrackHitsParamV2::Eta() const | |
357 | { | |
358 | Float_t ctg = fZ / fR; | |
359 | Float_t eta = -TMath::Log(TMath::Hypot(1,ctg)-TMath::Abs(ctg)); | |
360 | if(ctg < 0) eta = -eta; | |
361 | return eta; | |
362 | } | |
363 | ||
364 | ||
365 | AliTPCTrackHitsV2::AliTPCTrackHitsV2():TObject(), | |
366 | fArray(0), | |
367 | fSize(0), | |
368 | fPrecision(0.), | |
369 | fStep(0.), | |
370 | fMaxDistance(0), | |
371 | fNVolumes(0), | |
372 | fVolumes(0), | |
373 | fTempInfo(0), | |
374 | fCurrentHit(0), | |
375 | fHit(0) | |
376 | { | |
377 | // | |
378 | //default constructor | |
379 | // | |
380 | const Float_t kHitPrecision=0.002; //default precision for hit position in cm | |
381 | const Float_t kStep =0.003; //30 mum step | |
382 | const UShort_t kMaxDistance =100; //maximum distance 100 | |
383 | ||
384 | fPrecision=kHitPrecision; //precision in cm | |
385 | fStep = kStep; //step size | |
386 | fMaxDistance = kMaxDistance; //maximum distance | |
387 | ||
388 | //fTrackHitsInfo = new AliObjectArray("AliTrackHitsInfo"); | |
389 | //fTrackHitsParam = new AliObjectArray("AliTrackHitsParamV2"); | |
390 | //fHitsPosAndQ = new TArrayOfArrayVStack("AliHitInfo"); | |
391 | fArray = new TClonesArray("AliTrackHitsParamV2"); | |
392 | fCurrentHit = new AliTPCCurrentHitV2; | |
393 | fgCounter1++; | |
394 | fgCounter2++; | |
395 | ||
396 | } | |
397 | ||
398 | AliTPCTrackHitsV2::~AliTPCTrackHitsV2() | |
399 | { | |
400 | // | |
401 | //default destructor | |
402 | // | |
403 | // if (fTrackHitsInfo) delete fTrackHitsInfo; | |
404 | if (fArray) { | |
405 | delete fArray; | |
406 | fArray =0; | |
407 | } | |
408 | //if (fHitsPosAndQ) delete fHitsPosAndQ; | |
409 | if (fCurrentHit) delete fCurrentHit; | |
410 | if (fTempInfo) delete fTempInfo; | |
411 | if (fVolumes) { | |
412 | delete [] fVolumes; | |
413 | fVolumes =0; | |
414 | fNVolumes=0; | |
415 | } | |
416 | if (fHit){ | |
417 | delete fHit; | |
418 | fHit=0; | |
419 | } | |
420 | fgCounter1--; | |
421 | } | |
422 | ||
423 | void AliTPCTrackHitsV2::Clear(Option_t * /*option*/) | |
424 | { | |
425 | // | |
426 | // clear object | |
427 | // | |
428 | fSize = 0; | |
429 | if (fArray){ | |
430 | for (Int_t i=0;i<fArray->GetEntriesFast();i++){ | |
431 | AliTrackHitsParamV2 * par = (AliTrackHitsParamV2 *)fArray->UncheckedAt(i); | |
432 | par->~AliTrackHitsParamV2(); // delete object | |
433 | } | |
434 | fArray->Clear(); | |
435 | } | |
436 | if (fTempInfo){ | |
437 | delete fTempInfo; | |
438 | delete fHit; | |
439 | fHit =0; | |
440 | fTempInfo =0; | |
441 | } | |
442 | if (fVolumes){ | |
443 | delete [] fVolumes; | |
444 | fVolumes=0; | |
445 | fNVolumes=0; | |
446 | } | |
447 | } | |
448 | ||
449 | ||
450 | void AliTPCTrackHitsV2::AddHitKartez(Int_t volumeID, Int_t trackID, Double_t x, | |
451 | Double_t y, Double_t z,Int_t q, Float_t time) | |
452 | { | |
453 | // | |
454 | // add hit to the container - it add hit at the end - input in global coordinata | |
455 | // | |
456 | Double_t r = TMath::Sqrt(x*x+y*y); | |
457 | Double_t fi = TMath::ACos(x/r); | |
458 | if (y<0) fi*=-1.; | |
459 | AddHit(volumeID,trackID,r,z,fi,q,time); | |
460 | } | |
461 | ||
462 | ||
463 | void AliTPCTrackHitsV2::AddHit(Int_t volumeID, Int_t trackID, | |
464 | Double_t r, Double_t z, Double_t fi, Int_t q, Float_t time) | |
465 | { | |
466 | // | |
467 | // Adding one hit | |
468 | // | |
469 | fSize++; | |
470 | Bool_t diff=kFALSE; | |
471 | if (!fTempInfo) { //initialisation of track - initialisation of parameters | |
472 | fTempInfo = new AliTPCTempHitInfoV2; | |
473 | fTempInfo->SetParam(new((*fArray)[0]) AliTrackHitsParamV2); | |
474 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
475 | fTempInfo->GetParam()->SetTrackID(trackID); | |
476 | AddVolume(volumeID); | |
477 | // | |
478 | fTempInfo->SetParamIndex(0); | |
479 | fTempInfo->NewParam(r,z,fi,q,time); | |
480 | return; | |
481 | } | |
482 | ||
483 | // if new volume or new trackID | |
484 | if ( (volumeID!=fTempInfo->GetParam()->GetVolumeID()) || | |
485 | (trackID!=fTempInfo->GetParam()->GetTrackID())){ | |
486 | if (volumeID!=fTempInfo->GetParam()->GetVolumeID()) AddVolume(volumeID); | |
487 | diff=kTRUE; | |
488 | FlushHitStack(kTRUE); | |
489 | ||
490 | fTempInfo->SetParamIndex(fTempInfo->GetParamIndex()+1); | |
491 | fTempInfo->SetParam(new((*fArray)[fTempInfo->GetParamIndex()]) AliTrackHitsParamV2); | |
492 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
493 | fTempInfo->GetParam()->SetTrackID(trackID); | |
494 | fTempInfo->NewParam(r,z,fi,q,time); | |
495 | return; | |
496 | } | |
497 | ||
498 | //calculate current fit precission to next point | |
499 | AliTrackHitsParamV2 ¶m = *(fTempInfo->GetParam()); | |
500 | Double_t dd=0; | |
501 | Double_t dl=0; | |
502 | Double_t ratio=0; | |
503 | Double_t dr,dz,dfi,ddz,ddfi; | |
504 | Double_t drhit,ddl; | |
505 | dr=dz=dfi=ddz=ddfi=0; | |
506 | drhit = r-fTempInfo->GetOldR(); | |
507 | { | |
508 | //Double_t dfi2 = param.fAn+2*param.fAd*(r-param.fR); | |
509 | Double_t dfi2 = param.GetAn(); | |
510 | dfi2*=dfi2*fTempInfo->GetOldR()*fTempInfo->GetOldR(); | |
511 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(r-param.fR); | |
512 | Double_t ddz2 = param.GetTheta(); | |
513 | ddz2*=ddz2; | |
514 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
515 | } | |
516 | // | |
517 | // dl = fStep * Short_t(TMath::Nint(drhit*ratio/fStep)); // MI change - range check | |
518 | dl = drhit*ratio/fStep; | |
519 | if (TMath::Abs(dl)>32765) dl =0; | |
520 | dl = fStep * Short_t(TMath::Nint(dl)); | |
521 | // | |
522 | ddl = dl - drhit*ratio; | |
523 | fTempInfo->SetOldR(fTempInfo->GetOldR()+dl/ratio); | |
524 | ||
525 | if (fTempInfo->GetStackIndex()>2){ | |
526 | dr = r-param.GetR(); | |
527 | dz = z-param.GetZ(); | |
528 | dfi = fi-param.GetFi(); | |
529 | ddz = dr*param.GetTheta()+dr*dr*param.GetThetaD()-dz; | |
530 | ddfi= dr*param.GetAn()+dr*dr*param.GetAd()-dfi; | |
531 | dd = TMath::Sqrt(ddz*ddz+r*r*ddfi*ddfi+ddl*ddl); | |
532 | // | |
533 | } | |
534 | //safety factor 1.25 | |
535 | if ( ( (dd*1.25>fPrecision) ) || | |
536 | (fTempInfo->GetStackIndex()+4>fTempInfo->kStackSize) || | |
537 | (TMath::Abs(dl/fStep)>fMaxDistance) ) | |
538 | diff=kTRUE; | |
539 | else{ // if precision OK | |
540 | fTempInfo->SetStackIndex(fTempInfo->GetStackIndex()+1); | |
541 | fTempInfo->SetHit(r,z,fi,q,time); | |
542 | return; | |
543 | } | |
544 | ||
545 | ||
546 | //if parameter changed | |
547 | if (FlushHitStack(kFALSE)){ //if full buffer flushed | |
548 | fTempInfo->SetParamIndex(fTempInfo->GetParamIndex()+1); | |
549 | fTempInfo->SetParam(new((*fArray)[fTempInfo->GetParamIndex()]) AliTrackHitsParamV2); | |
550 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
551 | fTempInfo->GetParam()->SetTrackID(trackID); | |
552 | fTempInfo->NewParam(r,z,fi,q,time); | |
553 | } | |
554 | else{ | |
555 | fTempInfo->SetStackIndex(fTempInfo->GetStackIndex()+1); | |
556 | fTempInfo->SetHit(r,z,fi,q,time); | |
557 | } | |
558 | } | |
559 | ||
560 | Bool_t AliTPCTrackHitsV2::FlushHitStack(Bool_t force) | |
561 | { | |
562 | // | |
563 | // write fHitsPosAndQ information from the stack to te arrays | |
564 | // | |
565 | if (!fTempInfo) return kFALSE; | |
566 | ||
567 | AliTrackHitsParamV2 & param = *(fTempInfo->GetParam()); | |
568 | //recalculate track parameter not fixing first point | |
569 | fTempInfo->UpdateParam(fStep/4.); | |
570 | //fTempInfo->Fit(fTempInfo->fParam); //- fixing the first and the last point | |
571 | ||
572 | Double_t oldr = param.GetR(); | |
573 | UInt_t i; | |
574 | Double_t dd; | |
575 | param.SetNHits(fTempInfo->GetStackIndex()+1); | |
576 | // if (param.fHitDistance) delete []param.fHitDistance; | |
577 | // if (param.fCharge) delete []param.fCharge; | |
578 | // if (param.fTime) delete []param.fTime; | |
579 | param.SetHitDistance(param.GetNHits()); | |
580 | param.SetCharge(param.GetNHits()); | |
581 | param.SetTime(param.GetNHits()); | |
582 | ||
583 | ||
584 | for (i=0; i <= fTempInfo->GetStackIndex(); i++){ | |
585 | Double_t * position = fTempInfo->GetPosition(i); | |
586 | Double_t dr = position[0]-oldr; | |
587 | Double_t ratio; | |
588 | { | |
589 | //Double_t dfi2 = param.fAn+2*param.fAd*(position[0]-param.fR); | |
590 | Double_t dfi2 = param.GetAn(); | |
591 | dfi2*=dfi2*oldr*oldr; | |
592 | //Double_t ddz2 = param.fTheta+2*param.fThetaD*(position[0]-param.fR); | |
593 | Double_t ddz2 = param.GetTheta(); | |
594 | ddz2*=ddz2; | |
595 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
596 | } | |
597 | ||
598 | // Double_t dl = fStep*(Short_t)TMath::Nint(dr*ratio/fStep); //MI change | |
599 | Double_t dl = dr*ratio/fStep; | |
600 | if (TMath::Abs(dl)>32765) dl =0; | |
601 | dl = fStep * Short_t(TMath::Nint(dl)); | |
602 | ||
603 | dr = dl/ratio; | |
604 | oldr+=dr; | |
605 | //calculate precission | |
606 | AliTrackHitsParamV2 ¶ml = *(fTempInfo->GetParam()); | |
607 | //real deltas | |
608 | Double_t dr1= position[0]-paraml.GetR(); | |
609 | Double_t dz = position[1]-paraml.GetZ(); | |
610 | Double_t dfi = position[2]-paraml.GetFi(); | |
611 | //extrapolated deltas | |
612 | Double_t dr2 = oldr-paraml.GetR(); | |
613 | Double_t ddr = dr2-dr1; | |
614 | Double_t ddz = dr2*paraml.GetTheta()+dr2*dr2*paraml.GetThetaD()-dz; | |
615 | Double_t ddfi= dr2*paraml.GetAn()+dr2*dr2*paraml.GetAd()-dfi; | |
616 | dd = TMath::Sqrt(ddz*ddz+oldr*oldr*ddfi*ddfi+ddr*ddr); | |
617 | ||
618 | ||
619 | if ( (dd>fPrecision) ){ | |
620 | //if ( (dd<0) ){ | |
621 | if (i==0){ | |
622 | paraml.SetAn(0); | |
623 | paraml.SetAd(0); | |
624 | paraml.SetTheta(0); | |
625 | paraml.SetThetaD(0); | |
626 | Double_t ddz1 = dr2*paraml.GetTheta()+dr2*dr2*paraml.GetThetaD()-dz; | |
627 | Double_t ddfi1= dr2*paraml.GetAn()+dr2*dr2*paraml.GetAd()-dfi; | |
628 | dl = 0; | |
629 | dd = TMath::Sqrt(ddz1*ddz1+oldr*oldr*ddfi1*ddfi1+ddr*ddr); | |
630 | } | |
631 | else | |
632 | break; | |
633 | } | |
634 | ||
635 | paraml.HitDistance(i)= Short_t(TMath::Nint(dl/fStep)); | |
636 | paraml.Charge(i)= Short_t(fTempInfo->GetQStack(i)); | |
637 | paraml.Time(i)= Short_t(fTempInfo->GetTimeStack(i)/AliTPCTrackHitsV2::fgkTimePrecision); | |
638 | } | |
639 | ||
640 | if (i<=fTempInfo->GetStackIndex()){ //if previous iteration not succesfull | |
641 | // Short_t * charge = new Short_t[i]; | |
642 | // Short_t * time = new Short_t[i]; | |
643 | // Short_t * hitDistance= new Short_t[i]; | |
644 | // memcpy(charge, param.fCharge,sizeof(Short_t)*i); | |
645 | // memcpy(time, param.fTime,sizeof(Short_t)*i); | |
646 | // memcpy(hitDistance, param.fHitDistance,sizeof(Short_t)*i); | |
647 | // delete [] param.fCharge; | |
648 | // delete [] param.fTime; | |
649 | // delete [] param.fHitDistance; | |
650 | param.SetNHits(i); | |
651 | param.ResizeCharge(i); | |
652 | param.ResizeTime(i); | |
653 | param.ResizeHitDistance(i); | |
654 | // | |
655 | Int_t volumeID = fTempInfo->GetParam()->GetVolumeID(); | |
656 | Int_t trackID =fTempInfo->GetParam()->GetTrackID(); | |
657 | fTempInfo->SetParamIndex(fTempInfo->GetParamIndex()+1); | |
658 | fTempInfo->SetParam(new((*fArray)[fTempInfo->GetParamIndex()]) AliTrackHitsParamV2); | |
659 | Double_t * p = fTempInfo->GetPosition(i); | |
660 | UInt_t index2 = fTempInfo->GetStackIndex(); | |
661 | fTempInfo->NewParam(p[0],p[1],p[2],fTempInfo->GetQStack(i),fTempInfo->GetTimeStack(i)); | |
662 | fTempInfo->GetParam()->SetVolumeID(volumeID); | |
663 | fTempInfo->GetParam()->SetTrackID(trackID); | |
664 | if (i+1<=index2) FlushHitStack2(i+1,index2); | |
665 | ||
666 | if (force) return FlushHitStack(kTRUE); | |
667 | return kFALSE; | |
668 | } | |
669 | return kTRUE; | |
670 | } | |
671 | ||
672 | ||
673 | void AliTPCTrackHitsV2::FlushHitStack2(Int_t index1, Int_t index2) | |
674 | { | |
675 | // | |
676 | // second iteration flush stack | |
677 | // call only for hits where first iteration were not succesfully interpolated | |
678 | // | |
679 | Double_t * positionstack = new Double_t[3*(index2-index1+1)]; | |
680 | UInt_t * qstack = new UInt_t[index2-index1+1]; | |
681 | Float_t * timestack = new Float_t[index2-index1+1]; | |
682 | memcpy(positionstack, fTempInfo->GetPosition(index1), | |
683 | (3*(index2-index1+1))*sizeof(Double_t)); | |
684 | memcpy(qstack, fTempInfo->GetQStackP(index1),(index2-index1+1)*sizeof(UInt_t)); | |
685 | memcpy(timestack, fTempInfo->GetTimeStackP(index1),(index2-index1+1)*sizeof(Float_t)); | |
686 | Double_t *p = positionstack; | |
687 | for (Int_t j=0; j<=index2-index1;j++){ | |
688 | fTempInfo->SetStackIndex(fTempInfo->GetStackIndex()+1); | |
689 | fTempInfo->SetHit(p[3*j+0],p[3*j+1],p[3*j+2],qstack[j],timestack[j]); | |
690 | } | |
691 | delete []positionstack; | |
692 | delete []qstack; | |
693 | delete []timestack; | |
694 | } | |
695 | ||
696 | ||
697 | void AliTPCTrackHitsV2::AddVolume(Int_t volume) | |
698 | { | |
699 | // | |
700 | //add volumes to tthe list of volumes | |
701 | // | |
702 | Int_t * volumes = new Int_t[fNVolumes+1]; | |
703 | if (fVolumes) memcpy(volumes,fVolumes,(fNVolumes)*sizeof(Int_t)); | |
704 | volumes[fNVolumes]=volume; | |
705 | fNVolumes++; | |
706 | if (fVolumes) delete []fVolumes; | |
707 | fVolumes = volumes; | |
708 | } | |
709 | ||
710 | ||
711 | Bool_t AliTPCTrackHitsV2::First() | |
712 | { | |
713 | // | |
714 | //set Current hit for the first hit | |
715 | // | |
716 | ||
717 | if (fArray->GetSize()<=0) { | |
718 | fCurrentHit->SetStatus(kFALSE); | |
719 | return kFALSE; | |
720 | } | |
721 | ||
722 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(0); | |
723 | if (!fHit) fHit = new AliTPChit; | |
724 | if (!(param) ) { | |
725 | fCurrentHit->SetStatus(kFALSE); | |
726 | return kFALSE; | |
727 | } | |
728 | // | |
729 | fCurrentHit->SetParamIndex(0); | |
730 | fCurrentHit->SetStackIndex(0); | |
731 | // | |
732 | // | |
733 | ((AliTPChit*)fHit)->fSector = param->GetVolumeID(); | |
734 | ((AliTPChit*)fHit)->SetTrack(param->GetTrackID()); | |
735 | ((AliTPChit*)fHit)->SetX(param->GetR()*TMath::Cos(param->GetFi())); | |
736 | ((AliTPChit*)fHit)->SetY(param->GetR()*TMath::Sin(param->GetFi())); | |
737 | ((AliTPChit*)fHit)->SetZ(param->GetZ()); | |
738 | ((AliTPChit*)fHit)->fQ = param->Charge(0); | |
739 | ((AliTPChit*)fHit)->fTime = (Float_t)(param->Time(0)*AliTPCTrackHitsV2::fgkTimePrecision); | |
740 | /* | |
741 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
742 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
743 | fCurrentHit->fHit.SetX(param->fR*TMath::Cos(param->fFi)); | |
744 | fCurrentHit->fHit.SetY(param->fR*TMath::Sin(param->fFi)); | |
745 | fCurrentHit->fHit.SetZ(param->fZ); | |
746 | fCurrentHit->fHit.fQ = param->fCharge[0]; | |
747 | fCurrentHit->fHit.fTime = (Float_t)(param->fTime[0]*AliTPCTrackHitsV2::fgkTimePrecision); | |
748 | */ | |
749 | fCurrentHit->SetR(param->GetR()); | |
750 | ||
751 | fCurrentHit->SetStatus(kTRUE); | |
752 | return fCurrentHit->GetStatus(); | |
753 | } | |
754 | ||
755 | Bool_t AliTPCTrackHitsV2::Next() | |
756 | { | |
757 | // | |
758 | // Hit iterator | |
759 | // | |
760 | if (!(fCurrentHit->GetStatus())) | |
761 | return kFALSE; | |
762 | ||
763 | fCurrentHit->SetStackIndex(fCurrentHit->GetStackIndex()+1); | |
764 | ||
765 | AliTrackHitsParamV2 *param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->GetParamIndex()); | |
766 | if (fCurrentHit->GetStackIndex()>=param->GetNHits()){ | |
767 | fCurrentHit->SetParamIndex(fCurrentHit->GetParamIndex()+1); | |
768 | if (fCurrentHit->GetParamIndex()>=fArray->GetEntriesFast()){ | |
769 | fCurrentHit->SetStatus(kFALSE); | |
770 | return kFALSE; | |
771 | } | |
772 | param = (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->GetParamIndex()); | |
773 | fCurrentHit->SetStackIndex(0); | |
774 | fCurrentHit->SetR(param->GetR()); | |
775 | } | |
776 | ||
777 | ||
778 | ||
779 | Double_t ratio; | |
780 | { | |
781 | // Double_t dfi2 = param->fAn+2*param->fAd*(fCurrentHit->fR-param->fR); | |
782 | Double_t dfi2 = param->GetAn(); | |
783 | dfi2*=dfi2*fCurrentHit->GetR()*fCurrentHit->GetR(); | |
784 | // Double_t ddz2 = param->fTheta+2*param->fThetaD*(fCurrentHit->fR-param->fR); | |
785 | Double_t ddz2 = param->GetTheta(); | |
786 | ddz2*=ddz2; | |
787 | ratio = TMath::Sqrt(1.+ dfi2+ ddz2); | |
788 | } | |
789 | ||
790 | fCurrentHit->SetR(fCurrentHit->GetR()+fStep*param->HitDistance(fCurrentHit->GetStackIndex())/ratio); | |
791 | ||
792 | Double_t dR = fCurrentHit->GetR() - param->GetR(); | |
793 | Double_t fi = param->GetFi() + (param->GetAn()*dR+param->GetAd()*dR*dR); | |
794 | Double_t z = param->GetZ() + (param->GetTheta()*dR+param->GetThetaD()*dR*dR); | |
795 | /* | |
796 | fCurrentHit->fHit.fQ = param->fCharge[fCurrentHit->fStackIndex]; | |
797 | fCurrentHit->fHit.fTime = (Float_t)(param->fTime[fCurrentHit->fStackIndex]*AliTPCTrackHitsV2::fgkTimePrecision); | |
798 | fCurrentHit->fHit.SetX(fCurrentHit->fR*TMath::Cos(fi)); | |
799 | fCurrentHit->fHit.SetY(fCurrentHit->fR*TMath::Sin(fi)); | |
800 | fCurrentHit->fHit.SetZ(z); | |
801 | fCurrentHit->fHit.fSector = param->fVolumeID; | |
802 | fCurrentHit->fHit.SetTrack(param->fTrackID); | |
803 | */ | |
804 | ((AliTPChit*)fHit)->fQ = param->Charge(fCurrentHit->GetStackIndex()); | |
805 | ((AliTPChit*)fHit)->fTime = (Float_t)(param->Time(fCurrentHit->GetStackIndex())*AliTPCTrackHitsV2::fgkTimePrecision); | |
806 | ((AliTPChit*)fHit)->SetX(fCurrentHit->GetR()*TMath::Cos(fi)); | |
807 | ((AliTPChit*)fHit)->SetY(fCurrentHit->GetR()*TMath::Sin(fi)); | |
808 | ((AliTPChit*)fHit)->SetZ(z); | |
809 | ((AliTPChit*)fHit)->fSector = param->GetVolumeID(); | |
810 | ((AliTPChit*)fHit)->SetTrack(param->GetTrackID()); | |
811 | ||
812 | return kTRUE; | |
813 | } | |
814 | ||
815 | AliHit * AliTPCTrackHitsV2::GetHit() const | |
816 | { | |
817 | // | |
818 | // Return one hit | |
819 | // | |
820 | return (fCurrentHit->GetStatus())? fHit:0; | |
821 | //return &fCurrentHit->fHit; | |
822 | ||
823 | } | |
824 | ||
825 | AliTrackHitsParamV2 * AliTPCTrackHitsV2::GetParam() | |
826 | { | |
827 | // | |
828 | // Return current parameters | |
829 | // | |
830 | return (fCurrentHit->GetStatus())? | |
831 | (AliTrackHitsParamV2 *)fArray->At(fCurrentHit->GetParamIndex()):0; | |
832 | } | |
833 |