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<div class="title">protocones.cpp</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// File: protocones.cpp                                                      //</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// Description: source file for stable cones determination (Cstable_cones)   //</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// This file is part of the SISCone project.                                 //</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// For more details, see http://projects.hepforge.org/siscone                //</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">//                                                                           //</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// Copyright (c) 2006 Gavin Salam and Gregory Soyez                          //</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">//                                                                           //</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// This program is free software; you can redistribute it and/or modify      //</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// it under the terms of the GNU General Public License as published by      //</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">// the Free Software Foundation; either version 2 of the License, or         //</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">// (at your option) any later version.                                       //</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">//                                                                           //</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">// This program is distributed in the hope that it will be useful,           //</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of            //</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">// GNU General Public License for more details.                              //</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">//                                                                           //</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">// You should have received a copy of the GNU General Public License         //</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">// along with this program; if not, write to the Free Software               //</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA //</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">//                                                                           //</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">// $Revision:: 322                                                          $//</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">// $Date:: 2011-11-15 10:12:36 +0100 (Tue, 15 Nov 2011)                     $//</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment">/*******************************************************</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"> * Introductory note:                                  *</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"> * Since this file has many member functions, we have  *</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment"> * structured them in categories:                      *</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment"> * INITIALISATION FUNCTIONS                            *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"> *  - ctor()                                           *</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment"> *  - ctor(particle_list)                              *</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment"> *  - dtor()                                           *</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment"> *  - init(particle_list)                              *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment"> * ALGORITHM MAIN ENTRY                                *</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment"> *  - get_stable_cone(radius)                          *</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment"> * ALGORITHM MAIN STEPS                                *</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment"> *  - init_cone()                                      *</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"> *  - test_cone()                                      *</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment"> *  - update_cone()                                    *</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment"> *  - proceed_with_stability()                         *</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment"> * ALGORITHM MAIN STEPS FOR COCIRCULAR SITUATIONS      *</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment"> *  - cocircular_pt_less(v1, v2)                       *</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment"> *  - prepare_cocircular_list()                        *</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment"> *  - test_cone_cocircular()                           *</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment"> *  - test_stability(candidate, border_list)           *</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment"> *  - updat_cone_cocircular()                          *</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment"> * RECOMPUTATION OF CONE CONTENTS                      *</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment"> *  - compute_cone_contents()                          *</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment"> *  - recompute_cone_contents()                        *</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment"> *  - recompute_cone_contents_if_needed()              *</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment"> * VARIOUS TOOLS                                       *</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment"> *  - circle_intersect()                               *</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"> *  - is_inside()                                      *</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment"> *  - abs_dangle()                                     *</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment"> *******************************************************/</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="preprocessor">#include &quot;protocones.h&quot;</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="preprocessor">#include &quot;siscone_error.h&quot;</span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="defines_8h.html">defines.h</a>&quot;</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#include &quot;circulator.h&quot;</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="keyword">namespace </span>siscone{</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment">/**********************************************************************</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment"> * Cstable_cones implementation                                       *</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment"> * Computes the list of stable comes from a particle list.            *</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment"> * This class does the first fundamental task of te cone algorithm:   *</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment"> * it is used to compute the list of stable cones given a list        *</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment"> * of particles.                                                      *</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment"> **********************************************************************/</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">// INITIALISATION FUNCTIONS                           //</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">//  - ctor()                                          //</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">//  - ctor(particle_list)                             //</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">//  - dtor()                                          //</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">//  - init(particle_list)                             //</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">// default ctor</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">//--------------</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="code" href="classsiscone_1_1Cstable__cones.html#a115f739609572b0e21621209c305e3da">   89</a></span>&#160;<a class="code" href="classsiscone_1_1Cstable__cones.html#a115f739609572b0e21621209c305e3da" title="default ctor">Cstable_cones::Cstable_cones</a>(){</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  nb_tot = 0;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  hc = NULL;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;}</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment">// ctor with initialisation</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment">//--------------------------</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<a class="code" href="classsiscone_1_1Cstable__cones.html#a115f739609572b0e21621209c305e3da" title="default ctor">Cstable_cones::Cstable_cones</a>(vector&lt;Cmomentum&gt; &amp;_particle_list)</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;  : <a class="code" href="classsiscone_1_1Cvicinity.html" title="list of element in the vicinity of a parent.">Cvicinity</a>(_particle_list){</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <a class="code" href="classsiscone_1_1Cstable__cones.html#a0fba255c0d0410eea111d7a2ee37a0f6" title="total number of tested cones">nb_tot</a> = 0;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;  <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a> = NULL;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;}</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">// default dtor</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">//--------------</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="code" href="classsiscone_1_1Cstable__cones.html#ad5d016c69e80a71e479b7aa7953016a3">  105</a></span>&#160;<a class="code" href="classsiscone_1_1Cstable__cones.html#ad5d016c69e80a71e479b7aa7953016a3" title="default dtor">Cstable_cones::~Cstable_cones</a>(){</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  <span class="keywordflow">if</span> (<a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>!=NULL) <span class="keyword">delete</span> <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;}</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment"> * initialisation</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment"> *  - _particle_list  list of particles</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment"> *  - _n              number of particles</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment"> *********************************************************************/</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"><a class="code" href="classsiscone_1_1Cstable__cones.html#a0f706473e304e43d21cbb23e86a299e1">  114</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classsiscone_1_1Cstable__cones.html#a0f706473e304e43d21cbb23e86a299e1" title="initialisation">Cstable_cones::init</a>(vector&lt;Cmomentum&gt; &amp;_particle_list){</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;  <span class="comment">// check already allocated mem</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;  <span class="keywordflow">if</span> (<a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>!=NULL){</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="keyword">delete</span> <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;  }</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;  <span class="keywordflow">if</span> (<a class="code" href="classsiscone_1_1Cstable__cones.html#a14098a86205362ec23a9687a9ea0a484" title="list of stable cones">protocones</a>.size()!=0)</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;    <a class="code" href="classsiscone_1_1Cstable__cones.html#a14098a86205362ec23a9687a9ea0a484" title="list of stable cones">protocones</a>.clear();</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;  multiple_centre_done.clear();</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;  <span class="comment">// initialisation</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;  <a class="code" href="classsiscone_1_1Cvicinity.html#ac7bf21da3e958f1b6a328524f413e5fb" title="set the particle_list">set_particle_list</a>(_particle_list);</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;}</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">// ALGORITHM MAIN ENTRY                               //</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">//  - get_stable_cone(radius)                         //</span></div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment"> * compute stable cones.</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment"> * This function really does the job i.e. computes</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment"> * the list of stable cones (in a seedless way)</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="comment"> *  - _radius:  radius of the cones</span></div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="comment"> * The number of stable cones found is returned</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="comment"> *********************************************************************/</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="code" href="classsiscone_1_1Cstable__cones.html#a93863c2efff4a836f2229ffcb34d5729">  141</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="classsiscone_1_1Cstable__cones.html#a93863c2efff4a836f2229ffcb34d5729" title="compute stable cones.">Cstable_cones::get_stable_cones</a>(<span class="keywordtype">double</span> _radius){</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  <span class="keywordtype">int</span> p_idx;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="comment">// check if everything is correctly initialised</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;  <span class="keywordflow">if</span> (<a class="code" href="classsiscone_1_1Cvicinity.html#a0be1e7c3ad643f15696db076c9c073a4" title="number of particles">n_part</a>==0){</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;  }</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;  <a class="code" href="classsiscone_1_1Cstable__cones.html#a355f508374e2e726c299b2abf6afa771" title="cone radius">R</a>  = _radius;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;  <a class="code" href="classsiscone_1_1Cstable__cones.html#a15cdf9f5025de7208fe4cf6bb1f912f8" title="cone radius SQUARED">R2</a> = <a class="code" href="classsiscone_1_1Cstable__cones.html#a355f508374e2e726c299b2abf6afa771" title="cone radius">R</a>*<a class="code" href="classsiscone_1_1Cstable__cones.html#a355f508374e2e726c299b2abf6afa771" title="cone radius">R</a>;</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;  <span class="comment">// allow hash for cones candidates</span></div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;  <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a> = <span class="keyword">new</span> <a class="code" href="classsiscone_1_1hash__cones.html" title="list of cones candidates.">hash_cones</a>(<a class="code" href="classsiscone_1_1Cvicinity.html#a0be1e7c3ad643f15696db076c9c073a4" title="number of particles">n_part</a>, <a class="code" href="classsiscone_1_1Cstable__cones.html#a15cdf9f5025de7208fe4cf6bb1f912f8" title="cone radius SQUARED">R2</a>);</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;  <span class="comment">// browse all particles</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;  <span class="keywordflow">for</span> (p_idx=0;p_idx&lt;<a class="code" href="classsiscone_1_1Cvicinity.html#a0be1e7c3ad643f15696db076c9c073a4" title="number of particles">n_part</a>;p_idx++){</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    <span class="comment">// step 0: compute the child list CL.</span></div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    <span class="comment">//         Note that this automatically sets the parent P</span></div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    <a class="code" href="classsiscone_1_1Cvicinity.html#a9fd74b26b76f20dd268fd0b14a055d5a" title="build the vicinity list from the list of points.">build</a>(&amp;<a class="code" href="classsiscone_1_1Cvicinity.html#a4022e1f54ec4276715fb2425030b07a4" title="the list of particles">plist</a>[p_idx], 2.0*R);</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;    <span class="comment">// special case: </span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    <span class="comment">//   if the vicinity is empty, the parent particle is a </span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    <span class="comment">//   stable cone by itself. Add it to protocones list.</span></div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="classsiscone_1_1Cvicinity.html#a69ad8432e860412e7a7974e06ee45f5f" title="number of elements in vicinity">vicinity_size</a>==0){</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;      <a class="code" href="classsiscone_1_1Cstable__cones.html#a14098a86205362ec23a9687a9ea0a484" title="list of stable cones">protocones</a>.push_back(*<a class="code" href="classsiscone_1_1Cvicinity.html#a02b7b429a44af32601d5d951476883a6" title="parent vector">parent</a>);</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;      <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    }</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    <span class="comment">// step 1: initialise with the first cone candidate</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    init_cone();</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;    <span class="keywordflow">do</span>{</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;      <span class="comment">// step 2: test cone stability for that pair (P,C)</span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;      test_cone();</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;      <span class="comment">// step 3: go to the next cone child candidate C</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;    } <span class="keywordflow">while</span> (!update_cone());</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;  }</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="keywordflow">return</span> proceed_with_stability();</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;}</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="comment">// ALGORITHM MAIN STEPS                               //</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="comment">//  - init_cone()                                     //</span></div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="comment">//  - test_cone()                                     //</span></div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="comment">//  - update_cone()                                   //</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="comment">//  - proceed_with_stability()                        //</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="comment"> * initialise the cone.</span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="comment"> * We take the first particle in the angular ordering to compute </span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="comment"> * this one</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="comment"> * return 0 on success, 1 on error</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="comment"> *********************************************************************/</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="keywordtype">int</span> Cstable_cones::init_cone(){</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;  <span class="comment">// The previous version of the algorithm was starting the </span></div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;  <span class="comment">// loop around vicinity elements with the &quot;most isolated&quot; child.</span></div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;  <span class="comment">// given the nodist method to calculate the cone contents, we no</span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;  <span class="comment">// longer need to worry about which cone comes first...</span></div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;  first_cone=0;</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;  <span class="comment">// now make sure we have lists of the cocircular particles</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;  prepare_cocircular_lists();</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;  <span class="comment">//TODO? deal with a configuration with only degeneracies ? </span></div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;  <span class="comment">// The only possibility seems a regular hexagon with a parent point</span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;  <span class="comment">// in the centre. And this situation is by itself unclear.</span></div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;  <span class="comment">// Hence, we do nothing here !</span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;  <span class="comment">// init set child C</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;  centre = <a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[first_cone];</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;  child = centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a39b763dc25c8fae43982e0a8c8b0ba22" title="pointer to the second borderline particle">v</a>;</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;  centre_idx = first_cone;</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;  <span class="comment">// build the initial cone (nodist: avoids calculating distances --</span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;  <span class="comment">// just deduces contents by circulating around all in/out operations)</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="comment">// this function also sets the list of included particles</span></div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;  compute_cone_contents();</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;  </div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;}</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="comment"> * test cones.</span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="comment"> * We check if the cone(s) built with the present parent and child </span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;<span class="comment"> * are stable</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="comment"> * return 0 on success 1 on error</span></div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="comment"> *********************************************************************/</span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="keywordtype">int</span> Cstable_cones::test_cone(){</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;  Creference weighted_cone_ref;</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  </div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;  <span class="comment">// depending on the side we are taking the child particle,</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  <span class="comment">// we test different configuration.</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;  <span class="comment">// Each time, two configurations are tested in such a way that</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;  <span class="comment">// all 4 possible cases (parent or child in or out the cone)</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;  <span class="comment">// are tested when taking the pair of particle parent+child</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;  <span class="comment">// and child+parent.</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;  <span class="comment">// here are the tests entering the first series:</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;  <span class="comment">//  1. check if the cone is already inserted</span></div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;  <span class="comment">//  2. check cone stability for the parent and child particles</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;  </div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;  <span class="keywordflow">if</span> (centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#aed44dbe9065f593442981d1f53847eaf" title="true if angle on the positive side, false otherwise">side</a>){</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;    <span class="comment">// test when both particles are not in the cone</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    <span class="comment">// or when both are in.</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;    <span class="comment">// Note: for the totally exclusive case, test emptyness before</span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;    cone_candidate = cone;</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    <span class="keywordflow">if</span> (cone.<a class="code" href="classsiscone_1_1Cmomentum.html#a44980853567f863ca4178926f5f83444" title="reference number for the vector">ref</a>.<a class="code" href="classsiscone_1_1Creference.html#a8f680bf54a83b561bfd97a5654d9ae54" title="test non-emptyness">not_empty</a>()){</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;      <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#a4d4f5cf710dde0fa86766c4f7809fe35" title="insert a new candidate into the hash.">insert</a>(&amp;cone_candidate, <a class="code" href="classsiscone_1_1Cvicinity.html#a02b7b429a44af32601d5d951476883a6" title="parent vector">parent</a>, child, <span class="keyword">false</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;    }</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    cone_candidate = cone;</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;    cone_candidate+= *<a class="code" href="classsiscone_1_1Cvicinity.html#a02b7b429a44af32601d5d951476883a6" title="parent vector">parent</a> + *child;</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;    <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#a4d4f5cf710dde0fa86766c4f7809fe35" title="insert a new candidate into the hash.">insert</a>(&amp;cone_candidate, <a class="code" href="classsiscone_1_1Cvicinity.html#a02b7b429a44af32601d5d951476883a6" title="parent vector">parent</a>, child, <span class="keyword">true</span>, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    <span class="comment">// test when 1! of the particles is in the cone</span></div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    cone_candidate = cone + *<a class="code" href="classsiscone_1_1Cvicinity.html#a02b7b429a44af32601d5d951476883a6" title="parent vector">parent</a>;</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#a4d4f5cf710dde0fa86766c4f7809fe35" title="insert a new candidate into the hash.">insert</a>(&amp;cone_candidate, parent, child, <span class="keyword">true</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    cone_candidate = cone + *child;</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#a4d4f5cf710dde0fa86766c4f7809fe35" title="insert a new candidate into the hash.">insert</a>(&amp;cone_candidate, parent, child, <span class="keyword">false</span>, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;  }</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;  <a class="code" href="classsiscone_1_1Cstable__cones.html#a0fba255c0d0410eea111d7a2ee37a0f6" title="total number of tested cones">nb_tot</a>+=2;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;}</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="comment"> * update the cone</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;<span class="comment"> * go to the next child for that parent and update &#39;cone&#39; appropriately</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="comment"> * return 0 if update candidate found, 1 otherwise</span></div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="comment"> ***********************************************************************/</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="keywordtype">int</span> Cstable_cones::update_cone(){</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;  <span class="comment">// get the next child and centre</span></div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;  centre_idx++;</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;  <span class="keywordflow">if</span> (centre_idx==<a class="code" href="classsiscone_1_1Cvicinity.html#a69ad8432e860412e7a7974e06ee45f5f" title="number of elements in vicinity">vicinity_size</a>)</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    centre_idx=0;</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;  <span class="keywordflow">if</span> (centre_idx==first_cone)</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;    <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;  <span class="comment">// update the cone w.r.t. the old child</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;  <span class="comment">// only required if the old child is entering inside in which</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;  <span class="comment">// case we need to add it. We also know that the child is </span></div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  <span class="comment">// inside iff its side is -.</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;  <span class="keywordflow">if</span> (!centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#aed44dbe9065f593442981d1f53847eaf" title="true if angle on the positive side, false otherwise">side</a>){</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    <span class="comment">// update cone</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    cone += (*child);</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;    <span class="comment">// update info on particles inside</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a887edcdd74f318114094ed476731013d" title="variable to tell if the particle is inside or outside the cone">is_inside</a>-&gt;<a class="code" href="classsiscone_1_1Cvicinity__inclusion.html#a4cb329d95b1d7d7f8c7ff4e17225a1a4" title="flag for particle inclusion in the cone">cone</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    <span class="comment">// update stability check quantities</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    dpt += fabs(child-&gt;px)+fabs(child-&gt;py);</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;  }</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;  <span class="comment">// update centre and child to correspond to the new position</span></div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;  centre = <a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[centre_idx];</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;  child = centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a39b763dc25c8fae43982e0a8c8b0ba22" title="pointer to the second borderline particle">v</a>;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;  <span class="comment">// check cocircularity</span></div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;  <span class="comment">// note that if cocirculaity is detected (i.e. if we receive 1</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;  <span class="comment">// in the next test), we need to recall &#39;update_cone&#39; directly</span></div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;  <span class="comment">// since tests and remaining part of te update has been performed</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;  <span class="comment">//if (cocircular_check())</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;  <span class="keywordflow">if</span> (cocircular_check())</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;    <span class="keywordflow">return</span> update_cone();</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;  <span class="comment">// update the cone w.r.t. the new child</span></div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;  <span class="comment">// only required if the new child was already inside in which</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;  <span class="comment">// case we need to remove it. We also know that the child is </span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;  <span class="comment">// inside iff its side is +.</span></div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;  <span class="keywordflow">if</span> ((centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#aed44dbe9065f593442981d1f53847eaf" title="true if angle on the positive side, false otherwise">side</a>) &amp;&amp; (cone.<a class="code" href="classsiscone_1_1Cmomentum.html#a44980853567f863ca4178926f5f83444" title="reference number for the vector">ref</a>.<a class="code" href="classsiscone_1_1Creference.html#a8f680bf54a83b561bfd97a5654d9ae54" title="test non-emptyness">not_empty</a>())){</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;    <span class="comment">// update cone</span></div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    cone -= (*child);</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    <span class="comment">// update info on particles inside</span></div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;    centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a887edcdd74f318114094ed476731013d" title="variable to tell if the particle is inside or outside the cone">is_inside</a>-&gt;<a class="code" href="classsiscone_1_1Cvicinity__inclusion.html#a4cb329d95b1d7d7f8c7ff4e17225a1a4" title="flag for particle inclusion in the cone">cone</a> = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    <span class="comment">// update stability check quantities</span></div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;    dpt += fabs(child-&gt;px)+fabs(child-&gt;py); <span class="comment">//child-&gt;perp2();</span></div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;  }</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;  <span class="comment">// check that the addition and subtraction of vectors does</span></div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;  <span class="comment">// not lead to too much rounding error</span></div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;  <span class="comment">// for that, we compute the sum of pt modifications and of |pt|</span></div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;  <span class="comment">// since last recomputation and once the ratio overpasses a threshold</span></div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;  <span class="comment">// we recompute vicinity.</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;  <span class="keywordflow">if</span> ((dpt&gt;<a class="code" href="defines_8h.html#a8356d71215126e3ec1e93a841a908311" title="program name">PT_TSHOLD</a>*(fabs(cone.<a class="code" href="classsiscone_1_1Cmomentum.html#aa7fd6b3c50e92675b8b6aebb6abfebcc" title="x-momentum">px</a>)+fabs(cone.<a class="code" href="classsiscone_1_1Cmomentum.html#a9190b796e5713de49dfba956cfdbcf20" title="y-momentum">py</a>))) &amp;&amp; (cone.<a class="code" href="classsiscone_1_1Cmomentum.html#a44980853567f863ca4178926f5f83444" title="reference number for the vector">ref</a>.<a class="code" href="classsiscone_1_1Creference.html#a8f680bf54a83b561bfd97a5654d9ae54" title="test non-emptyness">not_empty</a>())){</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;    recompute_cone_contents();</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;  }</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;  <span class="keywordflow">if</span> (cone.<a class="code" href="classsiscone_1_1Cmomentum.html#a44980853567f863ca4178926f5f83444" title="reference number for the vector">ref</a>.<a class="code" href="classsiscone_1_1Creference.html#a2899510572ccf38c2c297b2efb5a4a97" title="test emptyness">is_empty</a>()){</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;    cone = Cmomentum();</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;    dpt=0.0;</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;  }</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;  <span class="keywordflow">return</span> 0; </div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;}</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="comment"> * compute stability of all enumerated candidates.</span></div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;<span class="comment"> * For all candidate cones which are stable w.r.t. their border particles,</span></div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="comment"> * pass the last test: stability with quadtree intersection</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="comment"> ************************************************************************/</span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="keywordtype">int</span> Cstable_cones::proceed_with_stability(){</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;  <span class="keywordtype">int</span> i; <span class="comment">// ,n;</span></div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;  hash_element *elm;</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;  <span class="comment">//n=0;</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;  <span class="keywordflow">for</span> (i=0;i&lt;=<a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#a2f10dd1f63f7048f931316e38eea77a0" title="number of occupied cells">mask</a>;i++){</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;    <span class="comment">// test ith cell of the hash array</span></div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;    elm = <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#a3116ea61b1cd7a61cd08a3a4bea0bba0" title="the cone data itself">hash_array</a>[i];</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;    <span class="comment">// browse elements therein</span></div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;    <span class="keywordflow">while</span> (elm!=NULL){</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;      <span class="comment">// test stability</span></div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;      <span class="keywordflow">if</span> (elm-&gt;is_stable){</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;        <span class="comment">// stability is not ensured by all pairs of &quot;edges&quot; already browsed</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="preprocessor">#ifdef USE_QUADTREE_FOR_STABILITY_TEST</span></div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;<span class="preprocessor"></span>        <span class="comment">//  =&gt; testing stability with quadtree intersection</span></div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;        <span class="keywordflow">if</span> (quadtree-&gt;circle_intersect(elm-&gt;eta, elm-&gt;phi, <a class="code" href="classsiscone_1_1Cstable__cones.html#a15cdf9f5025de7208fe4cf6bb1f912f8" title="cone radius SQUARED">R2</a>)==elm-&gt;ref){</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;<span class="preprocessor"></span>        <span class="comment">//  =&gt; testing stability with the particle-list intersection</span></div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        <span class="keywordflow">if</span> (circle_intersect(elm-&gt;eta, elm-&gt;phi)==elm-&gt;<a class="code" href="classsiscone_1_1Creference.html#a9e21fdb505698e0ffc18e570a724d18b" title="actual data for the reference">ref</a>){</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="preprocessor"></span>          <span class="comment">// add it to the list of protocones</span></div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;          <span class="comment">// note that in its present form, we do not allocate the </span></div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;          <span class="comment">// 4-vector components of the momentum. There&#39;s no need to</span></div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;          <span class="comment">// do it here as it will be recomputed in</span></div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;          <span class="comment">//   Csplit_merge::add_protocones</span></div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;          <a class="code" href="classsiscone_1_1Cstable__cones.html#a14098a86205362ec23a9687a9ea0a484" title="list of stable cones">protocones</a>.push_back(Cmomentum(elm-&gt;eta, elm-&gt;phi, elm-&gt;ref));</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;        }</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;      }</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;      </div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;      <span class="comment">// jump to the next one</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;      elm = elm-&gt;next;</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;    }</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;  }</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;  </div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;  <span class="comment">// free hash</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;  <span class="comment">// we do that at this level because hash eats rather a lot of memory</span></div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;  <span class="comment">// we want to free it before running the split/merge algorithm</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="preprocessor">#ifdef DEBUG_STABLE_CONES</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="preprocessor"></span>  nb_hash_cones = <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#aedaa1c9a5f7a6e9b926b63ff6097f538" title="number of elements">n_cones</a>;</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;  nb_hash_occupied = <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;n_occupied_cells;</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;  <span class="keyword">delete</span> <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>;</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;  <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>=NULL;</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;  <span class="keywordflow">return</span> <a class="code" href="classsiscone_1_1Cstable__cones.html#a14098a86205362ec23a9687a9ea0a484" title="list of stable cones">protocones</a>.size();</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;}</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;<span class="comment">// ALGORITHM MAIN STEPS FOR COCIRCULAR SITUATIONS     //</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;<span class="comment">//  - cocircular_pt_less(v1, v2)                      //</span></div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;<span class="comment">//  - prepare_cocircular_list()                       //</span></div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="comment">//  - test_cone_cocircular()                          //</span></div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="comment">//  - test_stability(candidate, border_vect)          //</span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;<span class="comment">//  - updat_cone_cocircular()                         //</span></div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;<span class="keywordtype">bool</span> cocircular_pt_less(Cmomentum *v1, Cmomentum *v2){</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;  <span class="keywordflow">return</span> v1-&gt;perp2() &lt; v2-&gt;perp2();</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;}</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;<span class="comment"> * run through the vicinity of the current parent and for each child</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;<span class="comment"> * establish which other members are cocircular... Note that the list</span></div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;<span class="comment"> * associated with each child contains references to vicinity</span></div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;<span class="comment"> * elements: thus two vicinity elements each associated with one given</span></div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;<span class="comment"> * particle may appear in a list -- this needs to be watched out for</span></div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;<span class="comment"> * later on... </span></div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;<span class="comment"> **********************************************************************/</span></div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;<span class="keywordtype">void</span> Cstable_cones::prepare_cocircular_lists() {</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;  circulator&lt;vector&lt;Cvicinity_elm*&gt;::iterator &gt; here(<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>.begin(), </div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;                                                     <a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>.begin(), </div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;                                                     <a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>.end());</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;  circulator&lt;vector&lt;Cvicinity_elm*&gt;::iterator &gt; search(here);</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;    Cvicinity_elm* here_pntr = *here();</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;    search.set_position(here);</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;    <span class="comment">// search forwards for things that should have &quot;here&quot; included in</span></div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;    <span class="comment">// their cocircularity list</span></div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;    <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;      ++search;</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;      <span class="keywordflow">if</span> ( abs_dphi((*search())-&gt;angle, here_pntr-&gt;angle) &lt; </div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;                                 here_pntr-&gt;cocircular_range </div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;           &amp;&amp; search() != here()) {</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;        (*search())-&gt;cocircular.push_back(here_pntr);</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;      } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;      }</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;    }</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;    <span class="comment">// search backwards</span></div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;    search.set_position(here);</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;    <span class="keywordflow">while</span> (<span class="keyword">true</span>) {</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;      --search;</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;      <span class="keywordflow">if</span> ( abs_dphi((*search())-&gt;angle, here_pntr-&gt;angle) &lt; </div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;                                 here_pntr-&gt;cocircular_range </div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;           &amp;&amp; search() != here()) {</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;        (*search())-&gt;cocircular.push_back(here_pntr);</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;      } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;      }</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;    }</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;    ++here;</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;  } <span class="keywordflow">while</span> (here() != <a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>.begin());</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;}</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;<span class="comment">/* </span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;<span class="comment"> * Testing cocircular configurations in p^3 time,</span></div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;<span class="comment"> * rather than 2^p time; we will test all contiguous subsets of points</span></div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;<span class="comment"> * on the border --- note that this is till probably overkill, since</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;<span class="comment"> * in principle we only have to test situations where up to a</span></div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;<span class="comment"> * half-circle is filled (but going to a full circle is simpler)</span></div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;<span class="comment"> ******************************************************************/</span></div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;<span class="keywordtype">void</span> Cstable_cones::test_cone_cocircular(Cmomentum &amp; borderless_cone,</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;                                         list&lt;Cmomentum *&gt; &amp; border_list) {</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;  vector&lt;Cborder_store&gt; border_vect;</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;  border_vect.reserve(border_list.size());</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;  <span class="keywordflow">for</span> (list&lt;Cmomentum *&gt;::iterator it = border_list.begin();</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;       it != border_list.end(); it++) {</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;    border_vect.push_back(Cborder_store(*it, centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a85c123cfffe6ace0abebc0687afa0e57" title="eta coordinate of the center">eta</a>, centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a880fab870bd8474ff397daf0f72cdac3" title="phi coordinate of the center">phi</a>));</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;  }</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;  <span class="comment">// get them into order of angle</span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;  sort(border_vect.begin(), border_vect.end());</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;  <span class="comment">// set up some circulators, since these will help us go around the</span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;  <span class="comment">// circle easily</span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;  circulator&lt;vector&lt;Cborder_store&gt;::iterator &gt; </div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;    start(border_vect.begin(), border_vect.begin(),border_vect.end());</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;  circulator&lt;vector&lt;Cborder_store&gt;::iterator &gt; mid(start), end(start);</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;  </div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;  <span class="comment">// test the borderless cone</span></div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;  Cmomentum candidate = borderless_cone;</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;  candidate.build_etaphi();</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;  <span class="keywordflow">if</span> (candidate.ref.not_empty())</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;    test_stability(candidate, border_vect);</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;    <span class="comment">// reset status wrt inclusion in the cone</span></div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;    mid = start;</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;    <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;      mid()-&gt;is_in = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;    } <span class="keywordflow">while</span> (++mid != start);</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;    <span class="comment">// now run over all inclusion possibilities with this starting point</span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;    candidate = borderless_cone;</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;    <span class="keywordflow">while</span> (++mid != start) { </div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;      <span class="comment">// will begin with start+1 and go up to start-1</span></div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;      mid()-&gt;is_in = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;      candidate += *(mid()-&gt;mom);</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;      test_stability(candidate, border_vect);</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;    }</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;  } <span class="keywordflow">while</span> (++start != end);</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;</div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;  <span class="comment">// mid corresponds to momentum that we need to include to get the</span></div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;  <span class="comment">// full cone</span></div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;  mid()-&gt;is_in = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;  candidate += *(mid()-&gt;mom);</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;  test_stability(candidate, border_vect);</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;}</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;</div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;<span class="keywordtype">void</span> Cstable_cones::test_stability(Cmomentum &amp; candidate, <span class="keyword">const</span> vector&lt;Cborder_store&gt; &amp; border_vect) {</div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;  </div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;  <span class="comment">// this almost certainly has not been done...</span></div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;  candidate.build_etaphi();</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;  <span class="keywordtype">bool</span> stable = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; border_vect.size(); i++) {</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;    <span class="keywordflow">if</span> (is_inside(&amp;candidate, border_vect[i].mom) ^ (border_vect[i].is_in)) {</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;      stable = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;      <span class="keywordflow">break</span>; <span class="comment">// it&#39;s unstable so there&#39;s no point continuing</span></div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;    }</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;  }</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;  <span class="keywordflow">if</span> (stable) <a class="code" href="classsiscone_1_1Cstable__cones.html#abc660afbd0981feb5a630f606a804443" title="list of candidates">hc</a>-&gt;<a class="code" href="classsiscone_1_1hash__cones.html#a4d4f5cf710dde0fa86766c4f7809fe35" title="insert a new candidate into the hash.">insert</a>(&amp;candidate);</div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;}</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;<span class="comment"> * check if we are in a situation of cocircularity.</span></div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;<span class="comment"> * if it is the case, update and test in the corresponding way</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;<span class="comment"> * return &#39;false&#39; if no cocircularity detected, &#39;true&#39; otherwise</span></div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;<span class="comment"> * Note that if cocircularity is detected, we need to </span></div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;<span class="comment"> * recall &#39;update&#39; from &#39;update&#39; !!!</span></div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;<span class="comment"> ***************************************************************/</span></div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;<span class="keywordtype">bool</span> Cstable_cones::cocircular_check(){</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;  <span class="comment">// check if many configurations have the same centre.</span></div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;  <span class="comment">// if this is the case, branch on the algorithm for this</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;  <span class="comment">// special case.</span></div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;  <span class="comment">// Note that those situation, being considered separately in </span></div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;  <span class="comment">// test_cone_multiple, must only be considered here if all</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;  <span class="comment">// angles are on the same side (this avoid multiple counting)</span></div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;  <span class="keywordflow">if</span> (centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a5fed131c5d1b658fe46a7bb6796efd59" title="list of elements co-circular with this one NB: empty list uses less mem than vector">cocircular</a>.empty()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;  <span class="comment">// first get cone into status required at end...</span></div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;  <span class="keywordflow">if</span> ((centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#aed44dbe9065f593442981d1f53847eaf" title="true if angle on the positive side, false otherwise">side</a>) &amp;&amp; (cone.<a class="code" href="classsiscone_1_1Cmomentum.html#a44980853567f863ca4178926f5f83444" title="reference number for the vector">ref</a>.<a class="code" href="classsiscone_1_1Creference.html#a8f680bf54a83b561bfd97a5654d9ae54" title="test non-emptyness">not_empty</a>())){</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;    <span class="comment">// update cone</span></div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;    cone -= (*child);</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;    <span class="comment">// update info on particles inside</span></div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;    centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a887edcdd74f318114094ed476731013d" title="variable to tell if the particle is inside or outside the cone">is_inside</a>-&gt;<a class="code" href="classsiscone_1_1Cvicinity__inclusion.html#a4cb329d95b1d7d7f8c7ff4e17225a1a4" title="flag for particle inclusion in the cone">cone</a> = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;    <span class="comment">// update stability check quantities</span></div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;    dpt += fabs(child-&gt;px)+fabs(child-&gt;py); <span class="comment">//child-&gt;perp2();</span></div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;  }</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;  <span class="comment">// now establish the list of unique children in the list</span></div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;  <span class="comment">// first make sure parent and child are in!</span></div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;</div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;  list&lt;Cvicinity_inclusion *&gt; removed_from_cone;</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;  list&lt;Cvicinity_inclusion *&gt; put_in_border;</div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;  list&lt;Cmomentum *&gt; border_list;</div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;  </div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;  Cmomentum cone_removal;</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;  Cmomentum border = *<a class="code" href="classsiscone_1_1Cvicinity.html#a02b7b429a44af32601d5d951476883a6" title="parent vector">parent</a>;</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;  border_list.push_back(parent);</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;  <span class="comment">// make sure child appears in the border region</span></div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;  centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a5fed131c5d1b658fe46a7bb6796efd59" title="list of elements co-circular with this one NB: empty list uses less mem than vector">cocircular</a>.push_back(centre);</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;</div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;  <span class="comment">// now establish the full contents of the cone minus the cocircular</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;  <span class="comment">// region and of the cocircular region itself</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;  <span class="keywordflow">for</span>(list&lt;Cvicinity_elm *&gt;::iterator it = centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a5fed131c5d1b658fe46a7bb6796efd59" title="list of elements co-circular with this one NB: empty list uses less mem than vector">cocircular</a>.begin();</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;      it != centre-&gt;<a class="code" href="classsiscone_1_1Cvicinity__elm.html#a5fed131c5d1b658fe46a7bb6796efd59" title="list of elements co-circular with this one NB: empty list uses less mem than vector">cocircular</a>.end(); it++) {</div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;    <span class="keywordflow">if</span> ((*it)-&gt;is_inside-&gt;cone) {</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;      cone_removal           += *((*it)-&gt;v);</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;      (*it)-&gt;is_inside-&gt;cone  = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;      removed_from_cone.push_back((*it)-&gt;is_inside);</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;    }</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;    <span class="comment">// if a point appears twice (i.e. with + and - sign) in the list of </span></div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;    <span class="comment">// points on the border, we take care not to include it twice.</span></div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;    <span class="comment">// Note that this situation may appear when a point is at a distance</span></div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;    <span class="comment">// close to 2R from the parent</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;    <span class="keywordflow">if</span> (!(*it)-&gt;is_inside-&gt;cocirc) {</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;      border += *((*it)-&gt;v);</div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;      (*it)-&gt;is_inside-&gt;cocirc  = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;      put_in_border.push_back((*it)-&gt;is_inside);</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;      border_list.push_back((*it)-&gt;v);</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;    }</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;  }</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;  <span class="comment">// figure out whether this pairing has been observed before</span></div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;  Cmomentum borderless_cone = cone;</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;  borderless_cone -= cone_removal;</div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;  <span class="keywordtype">bool</span> consider = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0;i&lt;multiple_centre_done.size();i++){</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;    <span class="keywordflow">if</span> ((multiple_centre_done[i].first ==borderless_cone.ref) &amp;&amp;</div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;        (multiple_centre_done[i].second==border.ref))</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;      consider = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;  }</div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;</div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;  <span class="comment">// now prepare the hard work</span></div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;  <span class="keywordflow">if</span> (consider) {</div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;    <span class="comment">// record the fact that we&#39;ve now seen this combination</span></div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;    multiple_centre_done.push_back(pair&lt;Creference,Creference&gt;(borderless_cone.ref, </div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;                                                               border.ref));</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;    <span class="comment">// first figure out whether our cone momentum is good</span></div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;    <span class="keywordtype">double</span> local_dpt = fabs(cone_removal.px) + fabs(cone_removal.py);</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;    <span class="keywordtype">double</span> total_dpt = dpt + local_dpt;</div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;</div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;    recompute_cone_contents_if_needed(borderless_cone, total_dpt);</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;    <span class="keywordflow">if</span> (total_dpt == 0) {</div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;      <span class="comment">// a recomputation has taken place -- so take advantage of this</span></div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;      <span class="comment">// and update the member cone momentum</span></div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;      cone = borderless_cone + cone_removal;</div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;      dpt  = local_dpt;</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;    }</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;    test_cone_cocircular(borderless_cone, border_list);</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;  }</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;  <span class="comment">// relabel things that were in the cone but got removed</span></div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;  <span class="keywordflow">for</span>(list&lt;Cvicinity_inclusion *&gt;::iterator is_in = removed_from_cone.begin();</div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;      is_in != removed_from_cone.end(); is_in++) {</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;    (*is_in)-&gt;cone = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;  }</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;  <span class="comment">// relabel things that got put into the border </span></div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;  <span class="keywordflow">for</span>(list&lt;Cvicinity_inclusion *&gt;::iterator is_in = put_in_border.begin();</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;      is_in != put_in_border.end(); is_in++) {</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;    (*is_in)-&gt;cocirc = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;  }</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;</div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;  <span class="comment">// we&#39;re done with everything -- return true to signal to user that we&#39;ve</span></div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;  <span class="comment">// been through the co-circularity rigmarole</span></div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;}</div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;</div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;<span class="comment">// RECOMPUTATION OF CONE CONTENTS                     //</span></div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;<span class="comment">//  - compute_cone_contents()                         //</span></div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;<span class="comment">//  - recompute_cone_contents()                       //</span></div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;<span class="comment">//  - recompute_cone_contents_if_needed()             //</span></div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;<span class="keywordtype">void</span> Cstable_cones::compute_cone_contents() {</div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;  circulator&lt;vector&lt;Cvicinity_elm*&gt;::iterator &gt; </div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;    start(<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>.begin()+first_cone, <a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>.begin(), <a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>.end());</div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;</div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;  circulator&lt;vector&lt;Cvicinity_elm*&gt;::iterator &gt; here(start);</div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;</div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;  <span class="comment">// note that in the following algorithm, the cone contents never includes</span></div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;  <span class="comment">// the child. Indeed, if it has positive sign, then it will be set as</span></div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;  <span class="comment">// outside at the last step in the loop. If it has negative sign, then the </span></div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;  <span class="comment">// loop will at some point go to the corresponding situation with positive</span></div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;  <span class="comment">// sign and set the inclusion status to 0.</span></div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;    <span class="comment">// as we leave this position a particle enters if its side is</span></div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;    <span class="comment">// negative (i.e. the centre is the one at -ve angle wrt to the</span></div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;    <span class="comment">// parent-child line</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;    <span class="keywordflow">if</span> (!(*here())-&gt;side) ((*here())-&gt;is_inside-&gt;cone) = 1;</div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;    </div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;    <span class="comment">// move on to the next position</span></div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;    ++here;</div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;    </div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;    <span class="comment">// as we arrive at this position a particle leaves if its side is positive</span></div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;    <span class="keywordflow">if</span> ((*here())-&gt;side) ((*here())-&gt;is_inside-&gt;cone) = 0;</div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;  } <span class="keywordflow">while</span> (here != start);</div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;</div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;  <span class="comment">// once we&#39;ve reached the start the &#39;is_inside&#39; information should be</span></div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;  <span class="comment">// 100% complete, so we can use it to calculate the cone contents</span></div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;  <span class="comment">// and then exit</span></div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;  recompute_cone_contents();</div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;}</div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;</div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;</div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;<span class="comment"> * compute the cone momentum from particle list.</span></div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;<span class="comment"> * in this version, we use the &#39;pincluded&#39; information</span></div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;<span class="comment"> * from the Cvicinity class</span></div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;<span class="keywordtype">void</span> Cstable_cones::recompute_cone_contents(){</div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;</div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;  <span class="comment">// set momentum to 0</span></div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;  cone = Cmomentum();</div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;</div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;  <span class="comment">// Important note: we can browse only the particles</span></div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;  <span class="comment">// in vicinity since all particles in the cone are</span></div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;  <span class="comment">// withing a distance 2R w.r.t. parent hence in vicinity.</span></div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;  <span class="comment">// Among those, we only add the particles for which &#39;is_inside&#39; is true !</span></div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;  <span class="comment">// This methos rather than a direct comparison avoids rounding errors</span></div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;  <span class="keywordflow">for</span> (i=0;i&lt;<a class="code" href="classsiscone_1_1Cvicinity.html#a69ad8432e860412e7a7974e06ee45f5f" title="number of elements in vicinity">vicinity_size</a>;i++){</div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;    <span class="comment">// to avoid double-counting, only use particles with + angle</span></div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;    <span class="keywordflow">if</span> ((<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[i]-&gt;side) &amp;&amp; (<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[i]-&gt;is_inside-&gt;cone))</div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;      cone += *<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[i]-&gt;v;</div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;  }</div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;  </div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;  <span class="comment">// set check variables back to 0</span></div>
<div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;  dpt = 0.0;</div>
<div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;}</div>
<div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;</div>
<div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;</div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;<span class="comment"> * if we have gone beyond the acceptable threshold of change, compute</span></div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;<span class="comment"> * the cone momentum from particle list.  in this version, we use the</span></div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;<span class="comment"> * &#39;pincluded&#39; information from the Cvicinity class, but we don&#39;t</span></div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;<span class="comment"> * change the member cone, only the locally supplied one</span></div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;<span class="keywordtype">void</span> Cstable_cones::recompute_cone_contents_if_needed(Cmomentum &amp; this_cone, </div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;                                                      <span class="keywordtype">double</span> &amp; this_dpt){</div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;  </div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;  <span class="keywordflow">if</span> (this_dpt &gt; <a class="code" href="defines_8h.html#a8356d71215126e3ec1e93a841a908311" title="program name">PT_TSHOLD</a>*(fabs(this_cone.px)+fabs(this_cone.py))) {</div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;    <span class="keywordflow">if</span> (cone.<a class="code" href="classsiscone_1_1Cmomentum.html#a44980853567f863ca4178926f5f83444" title="reference number for the vector">ref</a>.<a class="code" href="classsiscone_1_1Creference.html#a2899510572ccf38c2c297b2efb5a4a97" title="test emptyness">is_empty</a>()) {</div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;      this_cone = Cmomentum();</div>
<div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;      <span class="comment">// set momentum to 0</span></div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;      this_cone = Cmomentum();</div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;      </div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;      <span class="comment">// Important note: we can browse only the particles</span></div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;      <span class="comment">// in vicinity since all particles in the this_cone are</span></div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;      <span class="comment">// withing a distance 2R w.r.t. parent hence in vicinity.</span></div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;      <span class="comment">// Among those, we only add the particles for which &#39;is_inside&#39; is true !</span></div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;      <span class="comment">// This methos rather than a direct comparison avoids rounding errors</span></div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;      <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0;i&lt;<a class="code" href="classsiscone_1_1Cvicinity.html#a69ad8432e860412e7a7974e06ee45f5f" title="number of elements in vicinity">vicinity_size</a>;i++){</div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;        <span class="comment">// to avoid double-counting, only use particles with + angle</span></div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;        <span class="keywordflow">if</span> ((<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[i]-&gt;side) &amp;&amp; (<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[i]-&gt;is_inside-&gt;cone))</div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;          this_cone += *<a class="code" href="classsiscone_1_1Cvicinity.html#a53c5b6eae565052d2a38d67e3542f5a3" title="list of points in parent&#39;s vicinity">vicinity</a>[i]-&gt;v;</div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;      }</div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;      </div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;    }</div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;    <span class="comment">// set check variables back to 0</span></div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;    this_dpt = 0.0;</div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;  }</div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;</div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;}</div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;</div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;</div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;<span class="comment">// VARIOUS TOOLS                                      //</span></div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;<span class="comment">//  - circle_intersect()                              //</span></div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;<span class="comment">//  - is_inside()                                     //</span></div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;<span class="comment">//  - abs_dangle()                                    //</span></div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;</div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;<span class="comment"> * circle intersection.</span></div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;<span class="comment"> * computes the intersection with a circle of given centre and radius.</span></div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;<span class="comment"> * The output takes the form of a checkxor of the intersection&#39;s particles</span></div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;<span class="comment"> *  - cx    circle centre x coordinate</span></div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;<span class="comment"> *  - cy    circle centre y coordinate</span></div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;<span class="comment"> * return the checkxor for the intersection</span></div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;<span class="comment"> ******************************************************************/</span></div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;Creference Cstable_cones::circle_intersect(<span class="keywordtype">double</span> cx, <span class="keywordtype">double</span> cy){</div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;  Creference intersection;</div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;  <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;  <span class="keywordtype">double</span> dx, dy;</div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;</div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;  <span class="keywordflow">for</span> (i=0;i&lt;<a class="code" href="classsiscone_1_1Cvicinity.html#a0be1e7c3ad643f15696db076c9c073a4" title="number of particles">n_part</a>;i++){</div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;    <span class="comment">// compute the distance of the i-th particle with the parent</span></div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;    dx = <a class="code" href="classsiscone_1_1Cvicinity.html#a4022e1f54ec4276715fb2425030b07a4" title="the list of particles">plist</a>[i].eta - cx;</div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;    dy = fabs(<a class="code" href="classsiscone_1_1Cvicinity.html#a4022e1f54ec4276715fb2425030b07a4" title="the list of particles">plist</a>[i].phi - cy);</div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;    </div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;    <span class="comment">// pay attention to the periodicity in phi !</span></div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;    <span class="keywordflow">if</span> (dy&gt;M_PI) </div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;      dy -= <a class="code" href="defines_8h.html#ad996edbbc287b4e5f3dd072a10bd6122" title="definition of 2*M_PI which is useful a bit everyhere!">twopi</a>;</div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;    </div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;    <span class="comment">// really check if the distance is less than VR</span></div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;    <span class="keywordflow">if</span> (dx*dx+dy*dy&lt;<a class="code" href="classsiscone_1_1Cstable__cones.html#a15cdf9f5025de7208fe4cf6bb1f912f8" title="cone radius SQUARED">R2</a>)</div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;      intersection+=<a class="code" href="classsiscone_1_1Cvicinity.html#a4022e1f54ec4276715fb2425030b07a4" title="the list of particles">plist</a>[i].ref;</div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;  }</div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;  </div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;  <span class="keywordflow">return</span> intersection;</div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;}</div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;</div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;<span class="comment"> * test if a particle is inside a cone of given centre.</span></div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;<span class="comment"> * check if the particle of coordinates &#39;v&#39; is inside the circle of radius R </span></div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;<span class="comment"> * centered at &#39;centre&#39;.</span></div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;<span class="comment"> *  - centre   centre of the circle</span></div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;<span class="comment"> *  - v        particle to test</span></div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;<span class="comment"> * return true if inside, false if outside</span></div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">bool</span> Cstable_cones::is_inside(Cmomentum *centre_in, Cmomentum *v){</div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;  <span class="keywordtype">double</span> dx, dy;</div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;</div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;  dx = centre_in-&gt;eta - v-&gt;eta;</div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;  dy = fabs(centre_in-&gt;phi - v-&gt;phi);</div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;  <span class="keywordflow">if</span> (dy&gt;M_PI) </div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;    dy -= <a class="code" href="defines_8h.html#ad996edbbc287b4e5f3dd072a10bd6122" title="definition of 2*M_PI which is useful a bit everyhere!">twopi</a>;</div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;      </div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;  <span class="keywordflow">return</span> dx*dx+dy*dy&lt;<a class="code" href="classsiscone_1_1Cstable__cones.html#a15cdf9f5025de7208fe4cf6bb1f912f8" title="cone radius SQUARED">R2</a>;</div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;}</div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;</div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;<span class="comment"> * compute the absolute value of the difference between 2 angles.</span></div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;<span class="comment"> * We take care of the 2pi periodicity</span></div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;<span class="comment"> *  - angle1   first angle</span></div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;<span class="comment"> *  - angle2   second angle</span></div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;<span class="comment"> * return the absolute value of the difference between the angles</span></div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;<span class="comment"> *****************************************************************/</span></div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">double</span> abs_dangle(<span class="keywordtype">double</span> &amp;angle1, <span class="keywordtype">double</span> &amp;angle2){</div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;  <span class="keywordtype">double</span> dphi;</div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;</div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;  dphi = fabs(angle1-angle2);</div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;  <span class="keywordflow">if</span> (dphi&gt;M_PI) </div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;    dphi = dphi-<a class="code" href="defines_8h.html#ad996edbbc287b4e5f3dd072a10bd6122" title="definition of 2*M_PI which is useful a bit everyhere!">twopi</a>;</div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;      </div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;  <span class="keywordflow">return</span> dphi;</div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;}</div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;  </div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;}</div>
</div><!-- fragment --></div><!-- contents -->
<address style="align: right;"><small>
The <a href="http://projects.hepforge.org/siscone" target="_top">
SISCone</a> project has been developed by 
<a href="http://www.lpthe.jussieu.fr/~salam" target="_top">
Gavin Salam</a> and 
<a href="http://www.theo.phys.ulg.ac.be/~soyez" target="_top">
Gregory Soyez</a><br>
Documentation generated on Mon May 6 2013 11:30:35 for SISCone by&nbsp;
<a href="http://www.doxygen.org/index.html">Doxygen</a> 1.8.3.1
</small>
</address>
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