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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 | /* $Id$ */ | |
16 | //_________________________________________________________________________ | |
17 | // Algorithm class used only by AliPHOSTrackSegmentMaker | |
18 | // Links recpoints into tracksegments | |
19 | // Why should I put meaningless comments | |
20 | // just to satisfy | |
21 | // the code checker | |
22 | //*-- Author: Dmitri Peressounko (SUBATECH) | |
23 | ||
24 | // --- ROOT system --- | |
25 | ||
26 | // --- Standard library --- | |
27 | ||
28 | // --- AliRoot header files --- | |
29 | ||
30 | #include "AliPHOSLink.h" | |
31 | ||
32 | ClassImp(AliPHOSLink) | |
33 | //____________________________________________________________________________ | |
34 | AliPHOSLink::AliPHOSLink() : | |
35 | fEmcN(-1), fCpvN(-1), fTrack(-1), fx(-1.), fz(-1.) | |
36 | { | |
37 | } | |
38 | ||
39 | //____________________________________________________________________________ | |
40 | AliPHOSLink::AliPHOSLink(Float_t dx, Float_t dz, Int_t emc, Int_t cpv, Int_t track): | |
41 | fEmcN(emc), | |
42 | fCpvN(cpv), | |
43 | fTrack(track), | |
44 | fx(dx), | |
45 | fz(dz) | |
46 | { | |
47 | // ctor | |
48 | } | |
49 | ||
50 | //____________________________________________________________________________ | |
51 | Int_t AliPHOSLink::Compare(const TObject * obj) const | |
52 | { | |
53 | // Compare according to the distance between EMC and CPV RecPoints in a track segment | |
54 | ||
55 | Int_t rv ; | |
56 | ||
57 | AliPHOSLink * link = (AliPHOSLink *) obj ; | |
58 | ||
59 | if(fx*fx+fz*fz < link->fz*link->fz+link->fx*link->fx ) | |
60 | rv = -1 ; | |
61 | else | |
62 | rv = 1 ; | |
63 | ||
64 | return rv ; | |
65 | } |