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Commit | Line | Data |
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3e87ef69 | 1 | // @(#) $Id$ |
9392f4fd | 2 | |
b661165c | 3 | // Author: Anders Vestbo <mailto:vestbo@fi.uib.no>, Uli Frankenfeld <mailto:franken@fi.uib.no> |
3e87ef69 | 4 | //*-- Copyright © ALICE HLT Group |
108615fc | 5 | |
118c26c3 | 6 | #include "AliL3StandardIncludes.h" |
7 | ||
108615fc | 8 | #include "AliL3RootTypes.h" |
9 | #include "AliL3Logging.h" | |
10 | #include "AliL3Vertex.h" | |
11 | #include "AliL3ConfMapPoint.h" | |
12 | #include "AliL3ConfMapFit.h" | |
13 | #include "AliL3ConfMapTrack.h" | |
ef79795d | 14 | #include "AliL3Transform.h" |
6f388e0d | 15 | #include "AliLevel3.h" |
108615fc | 16 | |
3e87ef69 | 17 | /** \class AliL3ConfMapTrack |
18 | <pre> | |
b661165c | 19 | //_____________________________________________________________ |
20 | // AliL3ConfMapTrack | |
21 | // | |
22 | // Track class for conformal mapper | |
3e87ef69 | 23 | </pre> |
24 | */ | |
b661165c | 25 | |
108615fc | 26 | ClassImp(AliL3ConfMapTrack) |
27 | ||
28 | ||
29 | AliL3ConfMapTrack::AliL3ConfMapTrack() | |
30 | { | |
31 | //Constructor | |
32 | ||
33 | fChiSq[0] = 0.; | |
34 | fChiSq[1] = 0.; | |
108615fc | 35 | } |
36 | ||
37 | AliL3ConfMapTrack::~AliL3ConfMapTrack() | |
38 | { | |
39 | ||
40 | } | |
41 | ||
42 | void AliL3ConfMapTrack::DeleteCandidate() | |
43 | { | |
44 | //Deletes this track by resetting all its parameters. Does not delete | |
45 | //the object itself. | |
46 | ||
47 | AliL3ConfMapPoint *curHit = (AliL3ConfMapPoint*)firstHit; | |
48 | AliL3ConfMapPoint *nextHit; | |
49 | ||
50 | while(curHit != 0) | |
51 | { | |
52 | nextHit = (AliL3ConfMapPoint*)curHit->nextTrackHit; | |
53 | curHit->nextTrackHit = 0; | |
54 | curHit = nextHit; | |
55 | } | |
56 | ||
57 | UInt_t *hit_numbers = GetHitNumbers(); | |
58 | for(Int_t i=0; i<GetNHits(); i++) | |
59 | { | |
60 | //fHitNumbers[i] = 0; | |
61 | hit_numbers[i]=0; | |
62 | } | |
63 | ||
64 | SetRadius(0.); | |
65 | SetCenterX(0.); | |
66 | SetCenterY(0.); | |
67 | ||
68 | ComesFromMainVertex(false); | |
69 | ||
70 | SetNHits(0); | |
71 | SetCharge(0); | |
72 | fChiSq[0] = 0.; | |
73 | fChiSq[1] = 0.; | |
74 | } | |
75 | ||
76 | ||
77 | void AliL3ConfMapTrack::SetProperties(Bool_t usage) | |
78 | { | |
79 | //Set the hits to this track to 'usage' | |
80 | ||
81 | for(StartLoop(); LoopDone(); GetNextHit()) | |
82 | { | |
83 | AliL3ConfMapPoint *p = (AliL3ConfMapPoint*)currentHit; | |
84 | p->SetUsage(usage); | |
85 | } | |
86 | return; | |
87 | } | |
88 | ||
89 | void AliL3ConfMapTrack::Reset() | |
90 | { | |
91 | //Resets the fit parameters of this track. | |
92 | ||
93 | //xy-plane | |
94 | s11Xy = 0; | |
95 | s12Xy = 0; | |
96 | s22Xy = 0; | |
97 | g1Xy = 0; | |
98 | g2Xy = 0; | |
99 | fChiSq[0] = 0.; | |
100 | ||
101 | //sz-plane | |
102 | s11Sz = 0; | |
103 | s12Sz = 0; | |
104 | s22Sz = 0; | |
105 | g1Sz = 0; | |
106 | g2Sz = 0; | |
107 | fChiSq[1] = 0; | |
108 | SetLength(0); | |
355debe1 | 109 | SetNHits(0); |
108615fc | 110 | } |
111 | ||
112 | void AliL3ConfMapTrack::UpdateParam(AliL3ConfMapPoint *thisHit) | |
113 | { | |
114 | //Function to update fit parameters of track | |
115 | //Also, it updates the hit pointers. | |
116 | ||
117 | ||
118 | //Increment the number of hits assigned to this track: | |
119 | ||
120 | //fNHits++; | |
121 | Int_t nhits = GetNHits(); | |
122 | nhits++; | |
123 | SetNHits(nhits); //SetNHits(nhits++); | |
124 | ||
125 | //Set the hit pointers: | |
126 | //if(fNHits == 1) | |
127 | if(GetNHits()==1) | |
128 | firstHit = thisHit; | |
129 | else | |
130 | ((AliL3ConfMapPoint*)lastHit)->nextTrackHit = thisHit; | |
131 | lastHit = thisHit; | |
132 | ||
133 | ||
134 | s11Xy = s11Xy + thisHit->GetXYWeight() ; | |
135 | s12Xy = s12Xy + thisHit->GetXYWeight() * thisHit->GetXprime() ; | |
136 | s22Xy = s22Xy + thisHit->GetXYWeight() * pow((thisHit->GetXprime()),2) ; | |
137 | g1Xy = g1Xy + thisHit->GetXYWeight() * thisHit->GetYprime() ; | |
138 | g2Xy = g2Xy + thisHit->GetXYWeight() * thisHit->GetXprime() * thisHit->GetYprime() ; | |
139 | ||
140 | ddXy = s11Xy * s22Xy - pow((s12Xy),2) ; | |
141 | if ( ddXy != 0 ) | |
142 | { | |
143 | a1Xy = ( g1Xy * s22Xy - g2Xy * s12Xy ) / ddXy ; | |
144 | a2Xy = ( g2Xy * s11Xy - g1Xy * s12Xy ) / ddXy ; | |
145 | } | |
146 | ||
147 | // Now in the sz plane | |
148 | s11Sz = s11Sz + thisHit->GetZWeight() ; | |
149 | s12Sz = s12Sz + thisHit->GetZWeight() * thisHit->GetS() ; | |
150 | s22Sz = s22Sz + thisHit->GetZWeight() * thisHit->GetS() * thisHit->GetS() ; | |
151 | g1Sz = g1Sz + thisHit->GetZWeight() * thisHit->GetZ() ; | |
152 | g2Sz = g2Sz + thisHit->GetZWeight() * thisHit->GetS() * thisHit->GetZ() ; | |
153 | ||
154 | ||
155 | ddSz = s11Sz * s22Sz - s12Sz * s12Sz ; | |
156 | if ( ddSz != 0 ) { | |
157 | a1Sz = ( g1Sz * s22Sz - g2Sz * s12Sz ) / ddSz ; | |
158 | a2Sz = ( g2Sz * s11Sz - g1Sz * s12Sz ) / ddSz ; | |
159 | } | |
108615fc | 160 | } |
161 | ||
162 | ||
163 | void AliL3ConfMapTrack::Fill(AliL3Vertex *vertex,Double_t max_Dca) | |
164 | { | |
165 | //Fill track variables with or without fit. | |
166 | ||
167 | //fRadius = sqrt(a2Xy*a2Xy+1)/(2*fabs(a1Xy)); | |
168 | Double_t radius = sqrt(a2Xy*a2Xy+1)/(2*fabs(a1Xy)); | |
169 | SetRadius(radius); | |
170 | ||
5a31e9df | 171 | //fPt = (Double_t)(AliL3Transform::GetBFieldValue() * fRadius); |
172 | Double_t pt = (Double_t)(AliL3Transform::GetBFieldValue() * GetRadius()); | |
108615fc | 173 | SetPt(pt); |
174 | ||
175 | if(GetPt() > max_Dca) //go for fit of helix in real space | |
176 | { | |
177 | AliL3ConfMapFit *fit = new AliL3ConfMapFit(this,vertex); | |
1f1942b8 | 178 | ComesFromMainVertex(AliLevel3::DoVertexFit()); |
108615fc | 179 | fit->FitHelix(); |
3e87ef69 | 180 | |
1f1942b8 | 181 | //AliL3ConfMapPoint *lHit = (AliL3ConfMapPoint*)lastHit; |
3e87ef69 | 182 | AliL3ConfMapPoint *fHit = (AliL3ConfMapPoint*)firstHit; |
1f1942b8 | 183 | SetLastPoint(fHit->GetX(),fHit->GetY(),fHit->GetZ()); |
3e87ef69 | 184 | |
0bd0c1ef | 185 | UpdateToFirstPoint(); |
108615fc | 186 | |
187 | delete fit; | |
188 | } | |
189 | else if(GetPt() == 0) | |
190 | LOG(AliL3Log::kError,"AliL3ConfMapTrack::Fill","Tracks")<<AliL3Log::kDec<< | |
191 | "Found track with Pt=0!!!"<<ENDLOG; | |
192 | else | |
193 | { | |
194 | LOG(AliL3Log::kError,"AliL3ConfMapTrack::Fill","Tracks")<<AliL3Log::kDec<< | |
195 | "Track with pt<max_Dca :"<<GetPt()<<ENDLOG; | |
196 | } | |
108615fc | 197 | } |
1f1942b8 | 198 | |
108615fc | 199 | Int_t AliL3ConfMapTrack::GetMCLabel() |
200 | { | |
201 | //For evaluation study. | |
202 | //Returns the MCtrackID of the belonging clusters. | |
203 | //If MCLabel < 0, means that track is fake. | |
204 | ||
205 | return 0; | |
206 | /* | |
207 | Int_t num_of_clusters = GetNumberOfPoints(); | |
208 | S *s=new S[num_of_clusters]; | |
209 | Int_t i; | |
210 | for (i=0; i<num_of_clusters; i++) s[i].lab=s[i].max=0; | |
211 | ||
212 | Int_t lab=123456789; | |
213 | for (i=0; i<num_of_clusters; i++) { | |
214 | AliL3ConfMapPoint *c=(AliL3ConfMapPoint*)fPoints->UncheckedAt(i); | |
215 | lab=fabs(c->fMCTrackID[0]); | |
216 | Int_t j; | |
217 | for (j=0; j<num_of_clusters; j++) | |
218 | if (s[j].lab==lab || s[j].max==0) break; | |
219 | s[j].lab=lab; | |
220 | s[j].max++; | |
221 | } | |
222 | ||
223 | Int_t max=0; | |
224 | for (i=0; i<num_of_clusters; i++) | |
225 | if (s[i].max>max) {max=s[i].max; lab=s[i].lab;} | |
226 | ||
227 | delete[] s; | |
228 | ||
229 | for (i=0; i<num_of_clusters; i++) { | |
230 | AliL3ConfMapPoint *c=(AliL3ConfMapPoint*)fPoints->UncheckedAt(i); | |
231 | if (fabs(c->fMCTrackID[1]) == lab || | |
232 | fabs(c->fMCTrackID[2]) == lab ) max++; | |
233 | } | |
234 | ||
235 | //check if more than 10% of the clusters are incorrectly assigned (fake track): | |
236 | ||
237 | if (1.-Float_t(max)/num_of_clusters > 0.10) | |
238 | { | |
239 | return -lab; | |
240 | } | |
241 | Int_t tail=Int_t(0.08*174); | |
242 | if (num_of_clusters < tail) return lab; | |
243 | ||
244 | max=0; | |
245 | for (i=1; i<=tail; i++) { | |
246 | AliL3ConfMapPoint *c = (AliL3ConfMapPoint*)fPoints->UncheckedAt(num_of_clusters-i); | |
247 | if (lab == fabs(c->fMCTrackID[0]) || | |
248 | lab == fabs(c->fMCTrackID[1]) || | |
249 | lab == fabs(c->fMCTrackID[2])) max++; | |
250 | } | |
251 | if (max < Int_t(0.5*tail)) | |
252 | { | |
253 | //printf("Wrong innermost clusters\n"); | |
254 | return -lab; | |
255 | } | |
256 | return lab; | |
257 | */ | |
258 | } | |
259 |