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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