FastJet 3.0.2
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00001 //STARTHEADER 00002 // $Id: Boost.hh 2689 2011-11-14 14:51:06Z soyez $ 00003 // 00004 // Copyright (c) 2005-2011, 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 __FASTJET_TOOL_BOOST_HH__ 00030 #define __FASTJET_TOOL_BOOST_HH__ 00031 00032 #include <fastjet/PseudoJet.hh> 00033 #include <fastjet/FunctionOfPseudoJet.hh> 00034 #include <fastjet/PseudoJetStructureBase.hh> 00035 00036 FASTJET_BEGIN_NAMESPACE // defined in fastjet/internal/base.hh 00037 00038 /// @ingroup tools_generic 00039 /// \class Boost 00040 /// Class to boost a PseudoJet 00041 /// 00042 /// This is a FunctionOfPseudoJet with return type PseudoJet. Its 00043 /// action if to boost the PseudoJet by a boost vector passed to its 00044 /// constructor 00045 class Boost : public FunctionOfPseudoJet<PseudoJet>{ 00046 public: 00047 /// default ctor 00048 Boost(const PseudoJet & jet_rest) : _jet_rest(jet_rest){} 00049 00050 /// the action of the function: boost the PseudoJet by a boost 00051 /// vector _jet_rest 00052 PseudoJet result(const PseudoJet & original) const{ 00053 PseudoJet res = original; 00054 return res.boost(_jet_rest); 00055 } 00056 00057 protected: 00058 PseudoJet _jet_rest; ///< the boost vector 00059 }; 00060 00061 /// @ingroup tools_generic 00062 /// \class Unboost 00063 /// Class to un-boost a PseudoJet 00064 /// 00065 /// This is a FunctionOfPseudoJet with return type PseudoJet. Its 00066 /// action if to un-boost the PseudoJet back in the restframe of the 00067 /// PseudoJet passed to its constructor 00068 class Unboost : public FunctionOfPseudoJet<PseudoJet>{ 00069 public: 00070 /// default ctor 00071 Unboost(const PseudoJet & jet_rest) : _jet_rest(jet_rest){} 00072 00073 /// the action of the function: boost the PseudoJet to the rest 00074 /// frame of _jet_rest 00075 PseudoJet result(const PseudoJet & original) const{ 00076 PseudoJet res = original; 00077 return res.unboost(_jet_rest); 00078 } 00079 00080 protected: 00081 PseudoJet _jet_rest; ///< the boost vector 00082 }; 00083 00084 FASTJET_END_NAMESPACE // defined in fastjet/internal/base.hh 00085 00086 #endif // __FASTJET_TRANSFORMER_HH__