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