[5] | 1 | #ifndef D0RunIIconeJets_PROTOJET |
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| 2 | #define D0RunIIconeJets_PROTOJET |
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| 3 | // --------------------------------------------------------------------------- |
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| 4 | // ProtoJet.hpp |
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| 5 | // |
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| 6 | // Created: 28-JUL-2000 Francois Touze (+ Laurent Duflot) |
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| 7 | // |
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| 8 | // Purpose: Implements a proto-jet object that is used as input by the |
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| 9 | // Improved Legacy Cone Algorithm split/merge algo. |
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| 10 | // |
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| 11 | // Modified: |
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| 12 | // 9-Aug-2000 Laurent Duflot |
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| 13 | // + save the initial stable cone ET before split/merge |
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| 14 | // 1-May-2007 Lars Sonnenschein |
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| 15 | // extracted from D0 software framework and modified to remove subsequent dependencies |
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| 16 | // |
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| 17 | // |
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| 18 | // This file is distributed with FastJet under the terms of the GNU |
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| 19 | // General Public License (v2). Permission to do so has been granted |
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| 20 | // by Lars Sonnenschein and the D0 collaboration (see COPYING for |
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| 21 | // details) |
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| 22 | // |
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| 23 | // History of changes in FastJet compared tothe original version of |
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| 24 | // ProtoJet.hpp |
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| 25 | // |
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| 26 | // 2011-12-13 Gregory Soyez <soyez@fastjet.fr> |
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| 27 | // |
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| 28 | // * added license information |
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| 29 | // |
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| 30 | // 2011-11-14 Gregory Soyez <soyez@fastjet.fr> |
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| 31 | // |
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| 32 | // * changed the name of a few parameters to avoid a gcc |
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| 33 | // -Wshadow warning |
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| 34 | // |
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| 35 | // 2009-01-17 Gregory Soyez <soyez@fastjet.fr> |
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| 36 | // |
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| 37 | // * put the code in the fastjet::d0 namespace |
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| 38 | // |
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| 39 | // 2007-12-14 Gavin Salam <salam@lpthe.jussieu.fr> |
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| 40 | // |
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| 41 | // * replaced make_pair by std::make_pair |
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| 42 | // |
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| 43 | // --------------------------------------------------------------------------- |
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| 44 | |
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| 45 | //#include "kinem_util/AnglesUtil.hpp" |
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| 46 | //#include "energycluster/ConeJetInfo.hpp" |
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| 47 | #include "ConeJetInfo.hpp" |
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| 48 | #include <list> |
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| 49 | #include <cmath> |
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| 50 | |
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| 51 | #include "inline_maths.h" //ls |
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| 52 | |
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| 53 | #include <fastjet/internal/base.hh> |
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| 54 | |
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| 55 | FASTJET_BEGIN_NAMESPACE |
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| 56 | |
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| 57 | namespace d0{ |
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| 58 | |
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| 59 | using namespace inline_maths; |
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| 60 | using namespace D0RunIIconeJets_CONEJETINFO; |
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| 61 | |
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| 62 | |
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| 63 | inline float RD2(float y1,float phi1,float y2,float phi2) |
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| 64 | { |
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| 65 | float dphi= delta_phi(phi1,phi2); |
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| 66 | return (y1-y2)*(y1-y2)+dphi*dphi; |
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| 67 | } |
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| 68 | |
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| 69 | inline float RDelta(float y1,float phi1,float y2,float phi2) |
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| 70 | { |
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| 71 | float dphi= delta_phi(phi1,phi2); |
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| 72 | return sqrt((y1-y2)*(y1-y2)+dphi*dphi); |
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| 73 | } |
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| 74 | |
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| 75 | inline float P2y(float* p4vec) { |
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| 76 | return y(p4vec[3],p4vec[2]); |
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| 77 | } |
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| 78 | |
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| 79 | inline float P2phi(float* p4vec) { |
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| 80 | return phi(p4vec[0],p4vec[1]); |
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| 81 | } |
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| 82 | |
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| 83 | /////////////////////////////////////////////////////////////////////////////// |
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| 84 | template <class Item> |
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| 85 | class ProtoJet { |
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| 86 | |
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| 87 | public : |
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| 88 | |
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| 89 | ProtoJet(float seedET); |
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| 90 | ProtoJet(float seedET,float y,float phi); |
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| 91 | ProtoJet(const ProtoJet<Item>& pj); |
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| 92 | ~ProtoJet() {;} |
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| 93 | |
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| 94 | void addItem(const Item* tw); |
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| 95 | void setJet(float y,float phi,float pT); |
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| 96 | void updateJet(); |
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| 97 | void erase(); |
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| 98 | |
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| 99 | float y() const; |
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| 100 | float phi() const; |
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| 101 | float pT() const; |
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| 102 | const ConeJetInfo & info() const; |
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| 103 | const std::list<const Item*>& LItems() const; |
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| 104 | |
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| 105 | void print(std::ostream &os) const; |
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| 106 | |
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| 107 | // actions to be taken when the jet is a stable cone |
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| 108 | void NowStable(); |
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| 109 | // declare the jet to have been splitted |
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| 110 | void splitted(){_info.splitted();}; |
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| 111 | // declare the jet to have been merged |
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| 112 | void merged(){_info.merged();}; |
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| 113 | protected : |
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| 114 | |
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| 115 | std::list<const Item*> _LItems; |
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| 116 | float _y; |
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| 117 | float _phi; |
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| 118 | float _pT; |
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| 119 | ConeJetInfo _info; |
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| 120 | |
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| 121 | }; |
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| 122 | /////////////////////////////////////////////////////////////////////////////// |
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| 123 | template<class Item> |
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| 124 | ProtoJet<Item>::ProtoJet(float seedET) : _LItems(), _info(seedET) { |
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| 125 | _y = 0.0; |
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| 126 | _phi= 0.0; |
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| 127 | _pT = 0.0; |
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| 128 | } |
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| 129 | |
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| 130 | template<class Item> |
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| 131 | ProtoJet<Item>::ProtoJet(float seedET,float y_in,float phi_in) : _LItems(), _info(seedET) { |
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| 132 | _y = y_in; |
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| 133 | _phi= phi_in; |
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| 134 | _pT = 0.0; |
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| 135 | } |
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| 136 | |
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| 137 | template<class Item> |
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| 138 | ProtoJet<Item>::ProtoJet(const ProtoJet<Item>& pj): _y(pj._y), |
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| 139 | _phi(pj._phi), _pT(pj._pT), |
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| 140 | _info(pj._info) |
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| 141 | { |
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| 142 | typename std::list<const Item*>::const_iterator it; |
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| 143 | for(it = pj._LItems.begin(); it != pj._LItems.end(); ++it) { |
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| 144 | _LItems.push_back(*it); |
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| 145 | } |
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| 146 | } |
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| 147 | |
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| 148 | template<class Item> |
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| 149 | void ProtoJet<Item>::addItem(const Item* tw) { |
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| 150 | _LItems.push_back(tw); |
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| 151 | } |
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| 152 | |
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| 153 | template<class Item> |
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| 154 | void ProtoJet<Item>::setJet(float y_in,float phi_in,float pT_in) { |
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| 155 | _y = y_in; |
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| 156 | _phi= phi_in; |
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| 157 | _pT = pT_in; |
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| 158 | } |
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| 159 | |
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| 160 | template<class Item> |
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| 161 | void ProtoJet<Item>::updateJet() { |
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| 162 | //float ETsum = 0.0; |
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| 163 | //float ysum = 0.0; |
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| 164 | //float PHIsum= 0.0; |
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| 165 | float p[4] = {0.,0.,0.,0.}; |
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| 166 | typename std::list<const Item*>::iterator it; |
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| 167 | for(it = _LItems.begin(); it != _LItems.end(); ++it) |
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| 168 | { |
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| 169 | float pk[4]; |
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| 170 | (*it)->p4vec(pk); |
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| 171 | //cout << "updateJet: px=" << pk[0] << " py=" << pk[1] << " pz=" << pk[2] << " E=" << pk[3] << endl; |
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| 172 | for ( int i = 0; i < 4 ; ++i) p[i] += pk[i]; |
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| 173 | } |
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| 174 | _y = P2y(p); |
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| 175 | _phi = P2phi(p); |
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| 176 | _pT = sqrt(p[0]*p[0] + p[1]*p[1]); |
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| 177 | if ( p[3] < 0. ) _pT = - _pT; |
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| 178 | |
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| 179 | } |
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| 180 | |
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| 181 | template<class Item> |
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| 182 | void ProtoJet<Item>::erase() { |
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| 183 | _LItems.erase(_LItems.begin(),_LItems.end()); |
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| 184 | _y = 0.0; |
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| 185 | _phi= 0.0; |
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| 186 | _pT = 0.0; |
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| 187 | // _info is not modified in order to keep split/merge history |
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| 188 | } |
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| 189 | |
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| 190 | // actions to be taken when the jet is a stable cone |
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| 191 | template<class Item> |
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| 192 | void ProtoJet<Item>::NowStable() { |
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| 193 | _info.initialET(_pT); |
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| 194 | } |
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| 195 | |
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| 196 | template<class Item> |
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| 197 | void ProtoJet<Item>::print(std::ostream& os) const { |
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| 198 | os<<"y phi Et = ("<<_y<<", "<<_phi<<", "<<this->_Et<<")"<<std::endl; |
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| 199 | os<< " members= " << std::endl; |
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| 200 | typename std::list<const Item*>::const_iterator i; |
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| 201 | for(i = _LItems.begin(); i != _LItems.end(); ++i) |
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| 202 | (*i)->print(os); |
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| 203 | os << std::endl; |
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| 204 | } |
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| 205 | |
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| 206 | template<class Item> |
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| 207 | inline float ProtoJet<Item>::y() const{ |
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| 208 | return _y; |
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| 209 | } |
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| 210 | |
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| 211 | template<class Item> |
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| 212 | inline float ProtoJet<Item>::phi() const{ |
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| 213 | return _phi; |
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| 214 | } |
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| 215 | |
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| 216 | template<class Item> |
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| 217 | inline float ProtoJet<Item>::pT() const{ |
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| 218 | return _pT; |
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| 219 | } |
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| 220 | template<class Item> |
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| 221 | inline const ConeJetInfo & ProtoJet<Item>::info() const{ |
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| 222 | return _info; |
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| 223 | } |
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| 224 | |
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| 225 | template<class Item> |
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| 226 | inline const std::list<const Item*>& ProtoJet<Item>::LItems() const{ |
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| 227 | return _LItems; |
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| 228 | } |
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| 229 | /////////////////////////////////////////////////////////////////////////////// |
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| 230 | |
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| 231 | } // namespace d0 |
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| 232 | |
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| 233 | FASTJET_END_NAMESPACE |
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| 234 | |
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| 235 | #endif |
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