1 | //STARTHEADER
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2 | // $Id: TrackJetPlugin.hh 2758 2011-11-24 08:31:58Z soyez $
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3 | //
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4 | // Copyright (c) 2007-2011, 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 __TRACKJETPLUGIN_HH__
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30 | #define __TRACKJETPLUGIN_HH__
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31 |
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32 | #include "fastjet/JetDefinition.hh"
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33 |
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34 | // questionable whether this should be in fastjet namespace or not...
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35 | FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
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36 |
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37 | // another forward declaration to reduce includes
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38 | class PseudoJet;
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39 |
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40 | //----------------------------------------------------------------------
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41 |
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42 | /// @ingroup plugins
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43 | /// \class TrackJetPlugin
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44 | /// Implementation of the TrackJet algorithm (plugin for fastjet v2.4 upwards)
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45 | //
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46 | class TrackJetPlugin : public JetDefinition::Plugin {
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47 | public:
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48 | /// Main constructor for the TrackJet Plugin class.
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49 | ///
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50 | /// The argument is an initialised list of jet algorithms
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51 | /// \param _radius the distance at which point a particle is no longer
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52 | /// recombied into the jet
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53 | /// \param jet_recombination_scheme the recombination scheme used to
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54 | /// sum the 4-vecors inside the jet
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55 | /// \param track_recombination_scheme the recombination scheme used to
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56 | /// sum the 4-vecors when accumulating
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57 | /// track into a the jet
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58 | /// Both recombiners are defaulted to pt_scheme recomb as for the Rivet
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59 | /// implementation.
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60 | TrackJetPlugin (double radius,
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61 | RecombinationScheme jet_recombination_scheme=pt_scheme,
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62 | RecombinationScheme track_recombination_scheme=pt_scheme){
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63 | _radius = radius;
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64 | _radius2 = radius*radius;
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65 | _jet_recombiner = JetDefinition::DefaultRecombiner(jet_recombination_scheme);
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66 | _track_recombiner = JetDefinition::DefaultRecombiner(track_recombination_scheme);
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67 | }
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68 |
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69 | /// copy constructor
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70 | TrackJetPlugin (const TrackJetPlugin & plugin) {
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71 | *this = plugin;
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72 | }
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73 |
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74 | // the things that are required by base class
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75 | virtual std::string description () const;
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76 | virtual void run_clustering(ClusterSequence &) const;
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77 |
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78 | /// the plugin mechanism's standard way of accessing the jet radius
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79 | /// here we return the R of the last alg in the list
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80 | virtual double R() const {return _radius;}
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81 |
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82 | private:
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83 | double _radius, _radius2;
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84 |
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85 | JetDefinition::DefaultRecombiner _jet_recombiner;
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86 | JetDefinition::DefaultRecombiner _track_recombiner;
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87 |
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88 | static bool _first_time;
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89 |
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90 | /// print a banner for reference to the 3rd-party code
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91 | void _print_banner(std::ostream *ostr) const;
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92 | };
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93 |
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94 | FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh
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95 |
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96 | #endif // __TRACKJETPLUGIN_HH__
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97 |
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