FastJet 3.0.2
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00001 //STARTHEADER 00002 // $Id: NestedDefsPlugin.hh 2577 2011-09-13 15:11:38Z salam $ 00003 // 00004 // Copyright (c) 2007-2011, Matteo Cacciari, Gavin P. Salam and Gregory Soyez 00005 // 00006 //---------------------------------------------------------------------- 00007 // This file is part of FastJet. 00008 // 00009 // FastJet is free software; you can redistribute it and/or modify 00010 // it under the terms of the GNU General Public License as published by 00011 // the Free Software Foundation; either version 2 of the License, or 00012 // (at your option) any later version. 00013 // 00014 // The algorithms that underlie FastJet have required considerable 00015 // development and are described in hep-ph/0512210. If you use 00016 // FastJet as part of work towards a scientific publication, please 00017 // include a citation to the FastJet paper. 00018 // 00019 // FastJet is distributed in the hope that it will be useful, 00020 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00021 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00022 // GNU General Public License for more details. 00023 // 00024 // You should have received a copy of the GNU General Public License 00025 // along with FastJet. If not, see <http://www.gnu.org/licenses/>. 00026 //---------------------------------------------------------------------- 00027 //ENDHEADER 00028 00029 #ifndef __NESTEDALGSPLUGIN_HH__ 00030 #define __NESTEDALGSPLUGIN_HH__ 00031 00032 #include "fastjet/JetDefinition.hh" 00033 #include <list> 00034 #include <memory> 00035 #include <cmath> 00036 00037 // questionable whether this should be in fastjet namespace or not... 00038 FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh 00039 00040 // another forward declaration to reduce includes 00041 class PseudoJet; 00042 00043 //---------------------------------------------------------------------- 00044 // 00045 /// @ingroup plugins 00046 /// \class NestedDefsPlugin 00047 /// Plugin to run multiple jet definitions successively (plugin for fastjet v2.4 upwards) 00048 /// 00049 /// NestedAglsPlugin is a plugin for fastjet (v2.4 upwards) that, given 00050 /// a list of jet definitions, performs the clustering by feeding the 00051 /// particles to the first algorithm and then, successively feeding the 00052 /// output to the next algorithm in the list. 00053 // 00054 class NestedDefsPlugin : public JetDefinition::Plugin { 00055 public: 00056 /// Main constructor for the NestedDefs Plugin class. 00057 /// 00058 /// The argument is an initialised list of jet algorithms 00059 NestedDefsPlugin (std::list<JetDefinition> &defs) : 00060 _defs(defs){} 00061 00062 /// copy constructor 00063 NestedDefsPlugin (const NestedDefsPlugin & plugin) { 00064 *this = plugin; 00065 } 00066 00067 // the things that are required by base class 00068 virtual std::string description () const; 00069 virtual void run_clustering(ClusterSequence &) const; 00070 /// the plugin mechanism's standard way of accessing the jet radius 00071 /// here we return the R of the last alg in the list 00072 virtual double R() const {return _defs.rbegin()->R();} 00073 00074 private: 00075 std::list<JetDefinition> _defs; 00076 }; 00077 00078 FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh 00079 00080 #endif // __SISCONEPLUGIN_HH__ 00081