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File indexing completed on 2025-02-22 10:55:44
0001 // -*- C++ -*- 0002 /////////////////////////////////////////////////////////////////////////////// 0003 // File: hash.h // 0004 // Description: header file for classes hash_element and hash_cones // 0005 // This file is part of the SISCone project. // 0006 // WARNING: this is not the main SISCone trunk but // 0007 // an adaptation to spherical coordinates // 0008 // For more details, see http://projects.hepforge.org/siscone // 0009 // // 0010 // Copyright (c) 2006-2008 Gavin Salam and Gregory Soyez // 0011 // // 0012 // This program is free software; you can redistribute it and/or modify // 0013 // it under the terms of the GNU General Public License as published by // 0014 // the Free Software Foundation; either version 2 of the License, or // 0015 // (at your option) any later version. // 0016 // // 0017 // This program is distributed in the hope that it will be useful, // 0018 // but WITHOUT ANY WARRANTY; without even the implied warranty of // 0019 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // 0020 // GNU General Public License for more details. // 0021 // // 0022 // You should have received a copy of the GNU General Public License // 0023 // along with this program; if not, write to the Free Software // 0024 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA // 0025 // // 0026 // $Revision:: $// 0027 // $Date:: $// 0028 /////////////////////////////////////////////////////////////////////////////// 0029 0030 #ifndef __SPH_HASH_H__ 0031 #define __SPH_HASH_H__ 0032 0033 #include "momentum.h" 0034 0035 namespace siscone_spherical{ 0036 0037 /** 0038 * \class sph_hash_element 0039 * information on store cones candidates. 0040 * 0041 * We store in this class the information used to count all 0042 * protocones in a first pass. This first pass only count 0043 * cones with different references and test their stbility 0044 * with the parent-child particles (border particles). 0045 */ 0046 class sph_hash_element{ 0047 public: 0048 CSph3vector centre; ///< centre of the cone 0049 bool is_stable; ///< true if stable w.r.t. "border particles" 0050 0051 sph_hash_element *next; ///< pointer to the next element 0052 }; 0053 0054 /** 0055 * \class sph_hash_cones 0056 * list of cones candidates. 0057 * 0058 * We store in this class all the hash_elements and give 0059 * functions to manipulate them. 0060 */ 0061 class sph_hash_cones{ 0062 public: 0063 /// \param _Np number of particles 0064 /// \param _radius cone radius 0065 sph_hash_cones(int _Np, double _radius); 0066 0067 /// destructor 0068 ~sph_hash_cones(); 0069 0070 /** 0071 * insert a new candidate into the hash. 0072 * \param v 4-momentum of te cone to add 0073 * \param parent parent particle defining the cone 0074 * \param child child particle defining the cone 0075 * \param p_io whether the parent has to belong to the cone or not 0076 * \param c_io whether the child has to belong to the cone or not 0077 * \return 0 on success, 1 on error 0078 */ 0079 int insert(CSphmomentum *v, CSphmomentum *parent, CSphmomentum *child, bool p_io, bool c_io); 0080 0081 /** 0082 * insert a new candidate into the hash. 0083 * \param v 4-momentum of te cone to add 0084 * Note, in this case, we assume stability. We also assume 0085 * that eta and phi are computed for v 0086 * \return 0 on success, 1 on error 0087 */ 0088 int insert(CSphmomentum *v); 0089 0090 /// the cone data itself 0091 sph_hash_element **hash_array; 0092 0093 /// number of elements 0094 int n_cones; 0095 0096 /// number of occupied cells 0097 #ifdef DEBUG_STABLE_CONES 0098 int n_occupied_cells; 0099 #endif 0100 0101 /// number of cells-1 0102 int mask; 0103 0104 /// circle radius (squared) 0105 /// NOTE: need to be set before any call to 'insert' 0106 double R2; 0107 0108 /// its squreed tangent 0109 double tan2R; 0110 }; 0111 0112 } 0113 #endif
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