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99e5fe42 | 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 | ||
16 | ||
17 | ||
18 | //--------------------------------------------------------------------- | |
19 | // Pxcone Jet finder | |
20 | // manages the search for jets | |
21 | // Author: jgcn@mda.cinvestav.mx | |
22 | //--------------------------------------------------------------------- | |
23 | ||
24 | #include <Riostream.h> | |
25 | #include <TLorentzVector.h> | |
83a444b1 | 26 | #include <TFile.h> |
99e5fe42 | 27 | #include "AliPxconeJetFinder.h" |
28 | #include "AliPxconeJetHeader.h" | |
29 | #include "AliJetReader.h" | |
99e5fe42 | 30 | |
31 | ClassImp(AliPxconeJetFinder) | |
32 | ||
33 | //////////////////////////////////////////////////////////////////////// | |
34 | ||
1b7d5d7e | 35 | AliPxconeJetFinder::AliPxconeJetFinder(): |
36 | fHeader(0) | |
99e5fe42 | 37 | { |
38 | // | |
39 | // Constructor | |
40 | // | |
99e5fe42 | 41 | } |
42 | ||
43 | //////////////////////////////////////////////////////////////////////// | |
44 | ||
45 | AliPxconeJetFinder::~AliPxconeJetFinder() | |
46 | ||
47 | { | |
48 | // | |
49 | // destructor | |
50 | // | |
51 | ||
52 | // reset and delete header | |
53 | } | |
54 | ||
55 | //////////////////////////////////////////////////////////////////////// | |
56 | ||
57 | #ifndef WIN32 | |
58 | # define pxcone pxcone_ | |
59 | # define type_of_call | |
60 | ||
61 | #else | |
62 | # define pxcone PXCONE | |
63 | # define type_of_call _stdcall | |
64 | #endif | |
65 | ||
66 | extern "C" void type_of_call | |
67 | pxcone_(int* mode, int* ntrak, int* dim, double* ptrak, | |
68 | double* coner, double* epslon, double* ovlim, | |
69 | int * maxjet, int* njet, double* pjet, int* ipass, | |
70 | int* ijmul, int* ierr); | |
71 | ||
72 | void AliPxconeJetFinder::FindJets() | |
73 | ||
74 | { | |
75 | // get number of entries | |
76 | // Int_t ne=fReader->GetNEvents(); | |
77 | // loops over entries (check user request for number of events) | |
78 | // (this info should be stored in reader-header) | |
79 | ||
80 | // test with one event | |
81 | TClonesArray *lvArray = fReader->GetMomentumArray(); | |
82 | Int_t nIn = lvArray->GetEntries(); | |
83 | ||
84 | // local arrays for input | |
85 | const Int_t kNmaxVec = 30000; | |
86 | if (nIn > kNmaxVec) { | |
87 | cout << " AliPxconeJetFinder::FindJets: Too many input vectors." | |
88 | << endl; | |
89 | cout << " Using only the first " << kNmaxVec << endl; | |
90 | nIn = kNmaxVec; | |
91 | } | |
92 | ||
93 | Double_t pIn[kNmaxVec][4]; | |
94 | Double_t pJet[kNmaxVec][5]; | |
95 | int ipass[kNmaxVec]; | |
96 | int ijmul[kNmaxVec]; | |
97 | Int_t ierr; | |
98 | ||
99 | // load input vectors | |
100 | for (Int_t i=0; i<nIn;i++){ | |
101 | TLorentzVector *lv = (TLorentzVector*) lvArray->At(i); | |
102 | pIn[i][0]= lv->Px(); | |
103 | pIn[i][1]= lv->Py(); | |
104 | pIn[i][2]= lv->Pz(); | |
105 | pIn[i][3]= lv->E(); | |
106 | } | |
107 | fJets->SetNinput(nIn); | |
108 | ||
109 | // run the algorithm. Get parameters from header | |
110 | Int_t dim=4; | |
111 | Int_t mode=fHeader->GetMode(); | |
112 | Double_t radius=fHeader->GetRadius(); | |
113 | Double_t minpt=fHeader->GetMinPt(); | |
114 | Double_t ov=fHeader->GetOverlap(); | |
115 | Int_t nj; | |
116 | pxcone(&mode,&nIn,&dim,&pIn[0][0],&radius,&minpt,&ov,&nIn,&nj, | |
117 | &pJet[0][0],&ipass[0],&ijmul[0],&ierr); | |
118 | ||
119 | // download jets | |
120 | fJets->SetInJet(ipass); | |
121 | for(Int_t i=0; i<nj; i++) | |
122 | fJets->AddJet(pJet[i][0],pJet[i][1], | |
123 | pJet[i][2],pJet[i][3]); | |
124 | fJets->SetMultiplicities(ijmul); | |
125 | } | |
126 | ||
127 | //////////////////////////////////////////////////////////////////////// | |
128 | ||
129 | void AliPxconeJetFinder::WriteJHeaderToFile() | |
130 | { | |
131 | // Write Header to file | |
132 | ||
133 | fOut->cd(); | |
134 | fHeader->Write(); | |
135 | } | |
136 | ||
137 | //////////////////////////////////////////////////////////////////////// | |
138 | ||
139 | void AliPxconeJetFinder::Reset() | |
140 | { | |
141 | // Reset jet list | |
142 | fJets->ClearJets(); | |
143 | } | |
144 |