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3018c446 | 1 | /************************************************************************** |
2 | * Copyright(c) 2007-2009, 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 | #include "AliMeanVertex.h" | |
17 | ||
18 | /* $Id$ */ | |
19 | ||
20 | /***************************************************************************** | |
21 | * * | |
22 | * This class contains the coordinates of the mean primary vertex position * | |
23 | * computed by AliITSMeanVertex * | |
24 | * * | |
25 | *****************************************************************************/ | |
26 | ||
27 | ClassImp(AliMeanVertex) | |
28 | ||
29 | //-------------------------------------------------------------------------- | |
30 | AliMeanVertex::AliMeanVertex() : | |
31 | AliESDVertex(), | |
32 | fTotTracklets(0.), | |
33 | fAverTracklets(0.), | |
34 | fSigmaOnAverTrack(0.) { | |
35 | // | |
36 | // Default Constructor, set everything to 0 | |
37 | // | |
38 | for(Int_t i=0;i<3;i++){ | |
39 | fErrW[i]=0.; | |
40 | } | |
41 | } | |
42 | ||
43 | //-------------------------------------------------------------------------- | |
44 | AliMeanVertex::AliMeanVertex(Double_t pos[3],Double_t err[3],Double_t cov[6],Int_t nevents, Float_t notracklets, Float_t avertracklets, Float_t signotrackl) : | |
45 | AliESDVertex(pos,cov,0.,nevents,"MeanVertex"), | |
46 | fTotTracklets(notracklets), | |
47 | fAverTracklets(avertracklets), | |
48 | fSigmaOnAverTrack(signotrackl) { | |
49 | // | |
50 | // Standard Constructor | |
51 | // | |
52 | for(Int_t i=0;i<3;i++){ | |
53 | fErrW[i]=err[i]; | |
54 | } | |
55 | } | |
56 | ||
57 | //-------------------------------------------------------------------------- | |
58 | void AliMeanVertex::GetErrorsOnPosition(Double_t err[3]) const { | |
59 | // | |
60 | // Return errors on vertex average position (weighted mean on several events) | |
61 | // | |
62 | err[0] = fErrW[0]; | |
63 | err[1] = fErrW[1]; | |
64 | err[2] = fErrW[2]; | |
65 | ||
66 | return; | |
67 | } |