FastJet  3.1.3
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Modules Pages
ClusterSequence1GhostPassiveArea.hh
1 //FJSTARTHEADER
2 // $Id: ClusterSequence1GhostPassiveArea.hh 3433 2014-07-23 08:17:03Z salam $
3 //
4 // Copyright (c) 2005-2014, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
5 //
6 //----------------------------------------------------------------------
7 // This file is part of FastJet.
8 //
9 // FastJet is free software; you can redistribute it and/or modify
10 // it under the terms of the GNU General Public License as published by
11 // the Free Software Foundation; either version 2 of the License, or
12 // (at your option) any later version.
13 //
14 // The algorithms that underlie FastJet have required considerable
15 // development. They are described in the original FastJet paper,
16 // hep-ph/0512210 and in the manual, arXiv:1111.6097. If you use
17 // FastJet as part of work towards a scientific publication, please
18 // quote the version you use and include a citation to the manual and
19 // optionally also to hep-ph/0512210.
20 //
21 // FastJet is distributed in the hope that it will be useful,
22 // but WITHOUT ANY WARRANTY; without even the implied warranty of
23 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 // GNU General Public License for more details.
25 //
26 // You should have received a copy of the GNU General Public License
27 // along with FastJet. If not, see <http://www.gnu.org/licenses/>.
28 //----------------------------------------------------------------------
29 //FJENDHEADER
30 
31 #ifndef __FASTJET_CLUSTERSEQUENCE1GHOSTPASSIVEAREA_HH__
32 #define __FASTJET_CLUSTERSEQUENCE1GHOSTPASSIVEAREA_HH__
33 
34 
35 #include "fastjet/PseudoJet.hh"
36 #include "fastjet/ClusterSequenceAreaBase.hh"
37 #include "fastjet/ClusterSequenceActiveArea.hh"
38 #include<iostream>
39 #include<vector>
40 
41 FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
42 
43 //using namespace std;
44 
45 /// @ingroup sec_area_classes
46 /// \class ClusterSequence1GhostPassiveArea
47 /// Like ClusterSequence with computation of the passive jet area by
48 /// adding a single ghost
49 ///
50 /// Class that behaves essentially like ClusterSequence except
51 /// that it also provides access to the area of a jet (which
52 /// will be a random quantity... Figure out what to do about seeds
53 /// later...)
54 ///
55 /// This class should not be used directly. Rather use
56 /// ClusterSequenceArea
58 public:
59 
61 
62  /// constructor based on JetDefinition and 1GhostPassiveAreaSpec
63  template<class L> ClusterSequence1GhostPassiveArea
64  (const std::vector<L> & pseudojets,
65  const JetDefinition & jet_def_in,
66  const GhostedAreaSpec & area_spec,
67  const bool & writeout_combinations = false) ;
68 
69  /// return an estimate for the number of empty jets -- one uses the
70  /// AreaBase one rather than the ActiveArea one (which for which we
71  /// do not have the information).
72  virtual double n_empty_jets(const Selector & selector) const {
73  return ClusterSequenceAreaBase::n_empty_jets(selector);
74  }
75 
76 protected:
77  /// does the initialisation and running specific to the passive
78  /// areas class
79  void _initialise_and_run_1GPA (const JetDefinition & jet_def_in,
80  const GhostedAreaSpec & area_spec,
81  const bool & writeout_combinations = false);
82 
83 private:
84 
85  void _run_1GPA(const GhostedAreaSpec & area_spec);
86 };
87 
88 
89 
90 
91 template<class L> ClusterSequence1GhostPassiveArea::ClusterSequence1GhostPassiveArea
92 (const std::vector<L> & pseudojets,
93  const JetDefinition & jet_def_in,
94  const GhostedAreaSpec & area_spec,
95  const bool & writeout_combinations) {
96 
97  // transfer the initial jets (type L) into our own array
98  _transfer_input_jets(pseudojets);
99 
100  // run the clustering for passive areas
101  _initialise_and_run_1GPA(jet_def_in, area_spec, writeout_combinations);
102 
103 }
104 
105 
106 
107 FASTJET_END_NAMESPACE
108 
109 #endif // __FASTJET_CLUSTERSEQUENCE1GHOSTPASSIVEAREA_HH__
Like ClusterSequence with computation of the passive jet area by adding a single ghost.
Like ClusterSequence with computation of the active jet area.
Class that encodes information about cuts and other selection criteria that can be applied to PseudoJ...
Definition: Selector.hh:149
virtual double n_empty_jets(const Selector &selector) const
return an estimate for the number of empty jets – one uses the AreaBase one rather than the ActiveAr...
Parameters to configure the computation of jet areas using ghosts.
class that is intended to hold a full definition of the jet clusterer