1 | //STARTHEADER
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2 | // $Id: ClusterSequence1GhostPassiveArea.hh 2687 2011-11-14 11:17:51Z soyez $
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3 | //
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4 | // Copyright (c) 2005-2011, Matteo Cacciari, Gavin P. Salam and Gregory Soyez
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5 | //
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6 | //----------------------------------------------------------------------
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7 | // This file is part of FastJet.
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8 | //
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9 | // FastJet is free software; you can redistribute it and/or modify
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10 | // it under the terms of the GNU General Public License as published by
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11 | // the Free Software Foundation; either version 2 of the License, or
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12 | // (at your option) any later version.
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13 | //
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14 | // The algorithms that underlie FastJet have required considerable
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15 | // development and are described in hep-ph/0512210. If you use
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16 | // FastJet as part of work towards a scientific publication, please
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17 | // include a citation to the FastJet paper.
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18 | //
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19 | // FastJet is distributed in the hope that it will be useful,
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20 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 | // GNU General Public License for more details.
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23 | //
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24 | // You should have received a copy of the GNU General Public License
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25 | // along with FastJet. If not, see <http://www.gnu.org/licenses/>.
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26 | //----------------------------------------------------------------------
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27 | //ENDHEADER
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28 |
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29 | #ifndef __FASTJET_CLUSTERSEQUENCE1GHOSTPASSIVEAREA_HH__
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30 | #define __FASTJET_CLUSTERSEQUENCE1GHOSTPASSIVEAREA_HH__
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31 |
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32 |
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33 | #include "fastjet/PseudoJet.hh"
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34 | #include "fastjet/ClusterSequenceAreaBase.hh"
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35 | #include "fastjet/ClusterSequenceActiveArea.hh"
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36 | #include<iostream>
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37 | #include<vector>
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38 |
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39 | FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
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40 |
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41 | //using namespace std;
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42 |
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43 | /// @ingroup sec_area_classes
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44 | /// \class ClusterSequence1GhostPassiveArea
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45 | /// Like ClusterSequence with computation of the passive jet area by
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46 | /// adding a single ghost
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47 | ///
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48 | /// Class that behaves essentially like ClusterSequence except
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49 | /// that it also provides access to the area of a jet (which
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50 | /// will be a random quantity... Figure out what to do about seeds
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51 | /// later...)
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52 | ///
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53 | /// This class should not be used directly. Rather use
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54 | /// ClusterSequenceArea
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55 | class ClusterSequence1GhostPassiveArea : public ClusterSequenceActiveArea {
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56 | public:
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57 |
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58 | ClusterSequence1GhostPassiveArea() {}
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59 |
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60 | /// constructor based on JetDefinition and 1GhostPassiveAreaSpec
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61 | template<class L> ClusterSequence1GhostPassiveArea
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62 | (const std::vector<L> & pseudojets,
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63 | const JetDefinition & jet_def_in,
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64 | const GhostedAreaSpec & area_spec,
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65 | const bool & writeout_combinations = false) ;
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66 |
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67 | /// return an estimate for the number of empty jets -- one uses the
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68 | /// AreaBase one rather than the ActiveArea one (which for which we
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69 | /// do not have the information).
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70 | virtual double n_empty_jets(const Selector & selector) const {
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71 | return ClusterSequenceAreaBase::n_empty_jets(selector);
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72 | }
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73 |
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74 | protected:
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75 | /// does the initialisation and running specific to the passive
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76 | /// areas class
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77 | void _initialise_and_run_1GPA (const JetDefinition & jet_def_in,
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78 | const GhostedAreaSpec & area_spec,
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79 | const bool & writeout_combinations = false);
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80 |
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81 | private:
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82 |
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83 | void _run_1GPA(const GhostedAreaSpec & area_spec);
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84 | };
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85 |
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86 |
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87 |
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88 |
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89 | template<class L> ClusterSequence1GhostPassiveArea::ClusterSequence1GhostPassiveArea
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90 | (const std::vector<L> & pseudojets,
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91 | const JetDefinition & jet_def_in,
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92 | const GhostedAreaSpec & area_spec,
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93 | const bool & writeout_combinations) {
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94 |
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95 | // transfer the initial jets (type L) into our own array
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96 | _transfer_input_jets(pseudojets);
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97 |
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98 | // run the clustering for passive areas
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99 | _initialise_and_run_1GPA(jet_def_in, area_spec, writeout_combinations);
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100 |
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101 | }
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102 |
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103 |
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104 |
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105 | FASTJET_END_NAMESPACE
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106 |
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107 | #endif // __FASTJET_CLUSTERSEQUENCE1GHOSTPASSIVEAREA_HH__
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