1 | //FJSTARTHEADER
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2 | // $Id: CMSIterativeConePlugin.hh 1508 2009-04-10 22:46:49Z soyez $
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3 | //
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4 | // Copyright (c) 2007-2014, 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. They are described in the original FastJet paper,
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16 | // hep-ph/0512210 and in the manual, arXiv:1111.6097. If you use
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17 | // FastJet as part of work towards a scientific publication, please
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18 | // quote the version you use and include a citation to the manual and
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19 | // optionally also to hep-ph/0512210.
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20 | //
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21 | // FastJet is distributed in the hope that it will be useful,
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22 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 | // GNU General Public License for more details.
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25 | //
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26 | // You should have received a copy of the GNU General Public License
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27 | // along with FastJet. If not, see <http://www.gnu.org/licenses/>.
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28 | //----------------------------------------------------------------------
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29 | //FJENDHEADER
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30 |
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31 | #ifndef __CMSITERATIVECONEPLUGIN_HH__
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32 | #define __CMSITERATIVECONEPLUGIN_HH__
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33 |
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34 | #include "fastjet/JetDefinition.hh"
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35 |
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36 | // questionable whether this should be in fastjet namespace or not...
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37 | FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh
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38 |
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39 | // forward declaration to reduce includes
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40 | class PseudoJet;
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41 |
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42 | //----------------------------------------------------------------------
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43 | //
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44 |
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45 | /// @ingroup plugins
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46 | /// \class CMSIterativeConePlugin
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47 | /// Implementation of the CMS Iterative Cone (plugin for fastjet v2.4 upwards)
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48 | class CMSIterativeConePlugin : public JetDefinition::Plugin {
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49 | public:
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50 | /// Main constructor for the CMSIterativeCone Plugin class.
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51 | ///
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52 | /// The arguments are
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53 | /// ConeRadius the radius of the cone
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54 | /// SeedThreshold a threshold for the seeds to iterate from
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55 | ///
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56 | /// NOTE: to be more coherent with all other fastjet plugins,
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57 | /// we've put the radius before the seed threshold.
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58 | /// CMS does the opposite.
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59 | /// In this way, we also put a default value of 0 for the
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60 | /// seed threshold.
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61 | CMSIterativeConePlugin (double ConeRadius, double SeedThreshold=1.0) :
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62 | theConeRadius(ConeRadius), theSeedThreshold(SeedThreshold){}
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63 |
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64 | /// copy constructor
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65 | CMSIterativeConePlugin (const CMSIterativeConePlugin & plugin) {
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66 | *this = plugin;
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67 | }
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68 |
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69 | // the things that are required by base class
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70 | virtual std::string description () const;
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71 | virtual void run_clustering(ClusterSequence &) const;
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72 |
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73 | /// the plugin mechanism's standard way of accessing the jet radius
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74 | /// here we return the R of the last alg in the list
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75 | virtual double R() const {return theConeRadius;}
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76 |
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77 | /// get the seed threshold
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78 | virtual double seed_threshold() const {return theSeedThreshold;}
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79 |
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80 | private:
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81 | double theConeRadius; ///< cone radius
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82 | double theSeedThreshold; ///< seed threshold
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83 |
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84 | static bool _first_time;
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85 |
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86 | /// print a banner for reference to the 3rd-party code
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87 | void _print_banner(std::ostream *ostr) const;
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88 | };
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89 |
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90 | FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh
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91 |
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92 | #endif // __CMSITERATIVECONEPLUGIN_HH__
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93 |
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