| 1 | //FJSTARTHEADER
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| 2 | // $Id: ClusterSequenceArea.hh 3484 2014-07-29 21:39:39Z soyez $
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| 3 | //
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| 4 | // Copyright (c) 2006-2014, 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 __FASTJET_CLUSTERSEQUENCEAREA_HH__
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| 32 | #define __FASTJET_CLUSTERSEQUENCEAREA_HH__
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| 33 |
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| 34 | #include "fastjet/ClusterSequenceAreaBase.hh"
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| 35 | #include "fastjet/ClusterSequenceActiveArea.hh"
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| 36 | #include "fastjet/ClusterSequenceActiveAreaExplicitGhosts.hh"
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| 37 | #include "fastjet/ClusterSequencePassiveArea.hh"
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| 38 | #include "fastjet/ClusterSequenceVoronoiArea.hh"
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| 39 | #include "fastjet/AreaDefinition.hh"
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| 40 |
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| 41 | FASTJET_BEGIN_NAMESPACE
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| 42 |
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| 43 | /// @ingroup area_classes
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| 44 | /// \class ClusterSequenceArea
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| 45 | /// General class for user to obtain ClusterSequence with additional
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| 46 | /// area information.
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| 47 | ///
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| 48 | /// Based on the area_def, it automatically dispatches the work to the
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| 49 | /// appropriate actual ClusterSequenceAreaBase-derived-class to do the
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| 50 | /// real work.
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| 51 | class ClusterSequenceArea : public ClusterSequenceAreaBase {
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| 52 | public:
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| 53 | /// main constructor
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| 54 | template<class L> ClusterSequenceArea
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| 55 | (const std::vector<L> & pseudojets,
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| 56 | const JetDefinition & jet_def_in,
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| 57 | const AreaDefinition & area_def_in) : _area_def(area_def_in) {
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| 58 | initialize_and_run_cswa(pseudojets, jet_def_in);
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| 59 | }
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| 60 |
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| 61 | /// constructor with a GhostedAreaSpec
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| 62 | template<class L> ClusterSequenceArea
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| 63 | (const std::vector<L> & pseudojets,
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| 64 | const JetDefinition & jet_def_in,
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| 65 | const GhostedAreaSpec & ghost_spec) : _area_def(ghost_spec){
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| 66 | initialize_and_run_cswa(pseudojets, jet_def_in);
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| 67 | }
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| 68 |
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| 69 | /// constructor with a VoronoiAreaSpec
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| 70 | template<class L> ClusterSequenceArea
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| 71 | (const std::vector<L> & pseudojets,
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| 72 | const JetDefinition & jet_def_in,
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| 73 | const VoronoiAreaSpec & voronoi_spec) : _area_def(voronoi_spec){
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| 74 | initialize_and_run_cswa(pseudojets, jet_def_in);
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| 75 | }
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| 76 |
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| 77 | /// return a reference to the area definition
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| 78 | const AreaDefinition & area_def() const {return _area_def;}
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| 79 |
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| 80 |
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| 81 | /// return the area associated with the given jet
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| 82 | virtual double area (const PseudoJet & jet) const {
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| 83 | return _area_base->area(jet);}
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| 84 |
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| 85 | /// return the error (uncertainty) associated with the determination
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| 86 | /// of the area of this jet
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| 87 | virtual double area_error (const PseudoJet & jet) const {
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| 88 | return _area_base->area_error(jet);}
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| 89 |
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| 90 | /// return the 4-vector area
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| 91 | virtual PseudoJet area_4vector(const PseudoJet & jet) const {
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| 92 | return _area_base->area_4vector(jet);}
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| 93 |
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| 94 | // /// return the total area, up to |y|<maxrap, that is free of jets
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| 95 | // virtual double empty_area(double maxrap) const {
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| 96 | // return _area_base->empty_area(maxrap);}
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| 97 | //
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| 98 | // /// return something similar to the number of pure ghost jets
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| 99 | // /// in the given rapidity range in an active area case.
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| 100 | // /// For the local implementation we return empty_area/(0.55 pi R^2),
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| 101 | // /// based on measured properties of ghost jets with kt and cam. Note
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| 102 | // /// that the number returned is a double.
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| 103 | // virtual double n_empty_jets(double maxrap) const {
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| 104 | // return _area_base->n_empty_jets(maxrap);
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| 105 |
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| 106 | /// return the total area, corresponding to the given selector, that
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| 107 | /// is free of jets
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| 108 | ///
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| 109 | /// The selector needs to have a finite area and be applicable jet by
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| 110 | /// jet (see the BackgroundEstimator and Subtractor tools for more
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| 111 | /// advanced usage)
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| 112 | virtual double empty_area(const Selector & selector) const {
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| 113 | return _area_base->empty_area(selector);}
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| 114 |
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| 115 | /// return something similar to the number of pure ghost jets
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| 116 | /// in the given rap-phi range in an active area case.
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| 117 | /// For the local implementation we return empty_area/(0.55 pi R^2),
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| 118 | /// based on measured properties of ghost jets with kt and cam. Note
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| 119 | /// that the number returned is a double.
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| 120 | ///
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| 121 | /// The selector needs to have a finite area and be applicable jet by
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| 122 | /// jet (see the BackgroundEstimator and Subtractor tools for more
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| 123 | /// advanced usage)
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| 124 | virtual double n_empty_jets(const Selector & selector) const {
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| 125 | return _area_base->n_empty_jets(selector);
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| 126 | }
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| 127 |
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| 128 | /// true if a jet is made exclusively of ghosts
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| 129 | virtual bool is_pure_ghost(const PseudoJet & jet) const {
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| 130 | return _area_base->is_pure_ghost(jet);
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| 131 | }
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| 132 |
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| 133 | /// true if this ClusterSequence has explicit ghosts
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| 134 | virtual bool has_explicit_ghosts() const {
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| 135 | return _area_base->has_explicit_ghosts();
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| 136 | }
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| 137 |
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| 138 |
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| 139 | /// overload version of what's in the ClusterSequenceAreaBase class, which
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| 140 | /// additionally checks compatibility between "selector" and region in which
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| 141 | /// ghosts are thrown.
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| 142 | ///
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| 143 | /// The selector needs to have a finite area and be applicable jet by
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| 144 | /// jet (see the BackgroundEstimator and Subtractor tools for more
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| 145 | /// advanced usage)
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| 146 | virtual void get_median_rho_and_sigma(const std::vector<PseudoJet> & all_jets,
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| 147 | const Selector & selector,
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| 148 | bool use_area_4vector,
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| 149 | double & median, double & sigma,
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| 150 | double & mean_area,
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| 151 | bool all_are_incl = false) const {
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| 152 | _warn_if_range_unsuitable(selector);
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| 153 | ClusterSequenceAreaBase::get_median_rho_and_sigma(
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| 154 | all_jets, selector, use_area_4vector,
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| 155 | median, sigma, mean_area, all_are_incl);
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| 156 | }
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| 157 |
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| 158 | /// overload version of what's in the ClusterSequenceAreaBase class,
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| 159 | /// which actually just does the same thing as the base version (but
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| 160 | /// since we've overridden the 5-argument version above, we have to
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| 161 | /// override the 4-argument version too.
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| 162 | virtual void get_median_rho_and_sigma(const Selector & selector,
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| 163 | bool use_area_4vector,
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| 164 | double & median, double & sigma) const {
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| 165 | ClusterSequenceAreaBase::get_median_rho_and_sigma(selector,use_area_4vector,
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| 166 | median,sigma);
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| 167 | }
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| 168 |
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| 169 | /// overload version of what's in the ClusterSequenceAreaBase class,
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| 170 | /// which actually just does the same thing as the base version (but
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| 171 | /// since we've overridden the multi-argument version above, we have to
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| 172 | /// override the 5-argument version too.
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| 173 | virtual void get_median_rho_and_sigma(const Selector & selector,
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| 174 | bool use_area_4vector,
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| 175 | double & median, double & sigma,
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| 176 | double & mean_area) const {
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| 177 | ClusterSequenceAreaBase::get_median_rho_and_sigma(selector,use_area_4vector,
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| 178 | median,sigma, mean_area);
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| 179 | }
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| 180 |
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| 181 |
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| 182 | /// overload version of what's in the ClusterSequenceAreaBase class, which
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| 183 | /// additionally checks compatibility between "range" and region in which
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| 184 | /// ghosts are thrown.
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| 185 | virtual void parabolic_pt_per_unit_area(double & a, double & b,
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| 186 | const Selector & selector,
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| 187 | double exclude_above=-1.0,
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| 188 | bool use_area_4vector=false) const {
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| 189 | _warn_if_range_unsuitable(selector);
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| 190 | ClusterSequenceAreaBase::parabolic_pt_per_unit_area(
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| 191 | a,b,selector, exclude_above, use_area_4vector);
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| 192 | }
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| 193 |
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| 194 |
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| 195 | private:
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| 196 |
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| 197 | /// print a warning if the range is unsuitable for the current
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| 198 | /// calculation of the area (e.g. because ghosts do not extend
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| 199 | /// far enough).
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| 200 | void _warn_if_range_unsuitable(const Selector & selector) const;
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| 201 |
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| 202 | template<class L> void initialize_and_run_cswa (
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| 203 | const std::vector<L> & pseudojets,
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| 204 | const JetDefinition & jet_def);
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| 205 |
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| 206 | std::auto_ptr<ClusterSequenceAreaBase> _area_base;
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| 207 | AreaDefinition _area_def;
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| 208 | static LimitedWarning _range_warnings;
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| 209 | static LimitedWarning _explicit_ghosts_repeats_warnings;
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| 210 |
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| 211 | };
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| 212 |
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| 213 | //----------------------------------------------------------------------
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| 214 | template<class L> void ClusterSequenceArea::initialize_and_run_cswa(
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| 215 | const std::vector<L> & pseudojets,
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| 216 | const JetDefinition & jet_def_in)
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| 217 | {
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| 218 |
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| 219 | ClusterSequenceAreaBase * _area_base_ptr;
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| 220 | switch(_area_def.area_type()) {
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| 221 | case active_area:
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| 222 | _area_base_ptr = new ClusterSequenceActiveArea(pseudojets,
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| 223 | jet_def_in,
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| 224 | _area_def.ghost_spec());
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| 225 | break;
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| 226 | case active_area_explicit_ghosts:
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| 227 | if (_area_def.ghost_spec().repeat() != 1)
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| 228 | _explicit_ghosts_repeats_warnings.warn("Requested active area with explicit ghosts with repeat != 1; only 1 set of ghosts will be used");
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| 229 | _area_base_ptr = new ClusterSequenceActiveAreaExplicitGhosts(pseudojets,
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| 230 | jet_def_in,
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| 231 | _area_def.ghost_spec());
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| 232 | break;
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| 233 | case voronoi_area:
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| 234 | _area_base_ptr = new ClusterSequenceVoronoiArea(pseudojets,
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| 235 | jet_def_in,
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| 236 | _area_def.voronoi_spec());
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| 237 | break;
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| 238 | case one_ghost_passive_area:
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| 239 | _area_base_ptr = new ClusterSequence1GhostPassiveArea(pseudojets,
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| 240 | jet_def_in,
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| 241 | _area_def.ghost_spec());
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| 242 | break;
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| 243 | case passive_area:
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| 244 | _area_base_ptr = new ClusterSequencePassiveArea(pseudojets,
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| 245 | jet_def_in,
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| 246 | _area_def.ghost_spec());
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| 247 | break;
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| 248 | default:
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| 249 | std::ostringstream err;
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| 250 | err << "Error: unrecognized area_type in ClusterSequenceArea:"
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| 251 | << _area_def.area_type();
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| 252 | throw Error(err.str());
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| 253 | //exit(-1);
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| 254 | }
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| 255 | // now copy across the information from the area base class
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| 256 | _area_base = std::auto_ptr<ClusterSequenceAreaBase>(_area_base_ptr);
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| 257 | transfer_from_sequence(*_area_base);
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| 258 | }
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| 259 |
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| 260 | FASTJET_END_NAMESPACE
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| 261 |
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| 262 | #endif // __FASTJET_CLUSTERSEQUENCEAREA_HH__
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| 263 |
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| 264 |
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