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be9c5115 | 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 | ||
acd84897 | 16 | /* $Id$ */ |
fb17acd4 | 17 | |
be9c5115 | 18 | //------------------------------------------------------------------------- |
19 | // Implementation of the AliTracker class | |
116cbefd | 20 | // Origin |
21 | // Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
be9c5115 | 22 | //------------------------------------------------------------------------- |
116cbefd | 23 | |
be9c5115 | 24 | #include <TMath.h> |
25 | ||
26 | #include "AliTracker.h" | |
27 | #include "AliCluster.h" | |
28 | #include "AliKalmanTrack.h" | |
29 | ||
30 | ClassImp(AliTracker) | |
31 | ||
32 | //__________________________________________________________________________ | |
33 | void AliTracker::CookLabel(AliKalmanTrack *t, Float_t wrong) const { | |
34 | //-------------------------------------------------------------------- | |
35 | //This function "cooks" a track label. If label<0, this track is fake. | |
36 | //-------------------------------------------------------------------- | |
37 | Int_t noc=t->GetNumberOfClusters(); | |
38 | Int_t *lb=new Int_t[noc]; | |
39 | Int_t *mx=new Int_t[noc]; | |
40 | AliCluster **clusters=new AliCluster*[noc]; | |
41 | ||
42 | Int_t i; | |
43 | for (i=0; i<noc; i++) { | |
44 | lb[i]=mx[i]=0; | |
45 | Int_t index=t->GetClusterIndex(i); | |
46 | clusters[i]=GetCluster(index); | |
47 | } | |
48 | ||
49 | Int_t lab=123456789; | |
50 | for (i=0; i<noc; i++) { | |
51 | AliCluster *c=clusters[i]; | |
52 | lab=TMath::Abs(c->GetLabel(0)); | |
53 | Int_t j; | |
54 | for (j=0; j<noc; j++) if (lb[j]==lab || mx[j]==0) break; | |
55 | lb[j]=lab; | |
56 | (mx[j])++; | |
57 | } | |
58 | ||
59 | Int_t max=0; | |
60 | for (i=0; i<noc; i++) if (mx[i]>max) {max=mx[i]; lab=lb[i];} | |
61 | ||
62 | for (i=0; i<noc; i++) { | |
63 | AliCluster *c=clusters[i]; | |
64 | if (TMath::Abs(c->GetLabel(1)) == lab || | |
65 | TMath::Abs(c->GetLabel(2)) == lab ) max++; | |
66 | } | |
67 | ||
68 | if ((1.- Float_t(max)/noc) > wrong) lab=-lab; | |
69 | t->SetLabel(lab); | |
70 | ||
71 | delete[] lb; | |
72 | delete[] mx; | |
73 | delete[] clusters; | |
74 | } | |
75 | ||
76 | //____________________________________________________________________________ | |
77 | void AliTracker::UseClusters(const AliKalmanTrack *t, Int_t from) const { | |
78 | //------------------------------------------------------------------ | |
79 | //This function marks clusters associated with the track. | |
80 | //------------------------------------------------------------------ | |
81 | Int_t noc=t->GetNumberOfClusters(); | |
82 | for (Int_t i=from; i<noc; i++) { | |
83 | Int_t index=t->GetClusterIndex(i); | |
84 | AliCluster *c=GetCluster(index); | |
85 | c->Use(); | |
86 | } | |
87 | } | |
88 | ||
89 |