2 ///////////////////////////////////////////////////////////////////////////////
4 // Description: header file for classes hash_element and hash_cones //
5 // This file is part of the SISCone project. //
6 // For more details, see http://projects.hepforge.org/siscone //
8 // Copyright (c) 2006 Gavin Salam and Gregory Soyez //
10 // This program is free software; you can redistribute it and/or modify //
11 // it under the terms of the GNU General Public License as published by //
12 // the Free Software Foundation; either version 2 of the License, or //
13 // (at your option) any later version. //
15 // This program is distributed in the hope that it will be useful, //
16 // but WITHOUT ANY WARRANTY; without even the implied warranty of //
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
18 // GNU General Public License for more details. //
20 // You should have received a copy of the GNU General Public License //
21 // along with this program; if not, write to the Free Software //
22 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA //
24 // $Revision:: 224 $//
25 // $Date:: 2008-05-16 19:58:30 +0200 (Fri, 16 May 2008) $//
26 ///////////////////////////////////////////////////////////////////////////////
32 #include "reference.h"
38 * information on store cones candidates.
40 * We store in this class the information used to count all
41 * protocones in a first pass. This first pass only count
42 * cones with different references and test their stbility
43 * with the parent-child particles (border particles).
47 Creference ref; ///< reference
48 double eta; ///< centre: eta coordinate
49 double phi; ///< centre: phi coordinate
50 bool is_stable; ///< true if stable w.r.t. "border particles"
52 hash_element *next; ///< pointer to the next element
57 * list of cones candidates.
59 * We store in this class all the hash_elements and give
60 * functions to manipulate them.
64 /// constructor with initialisation
65 /// \param _Np number of particles
66 /// \param _R2 cone radius (squared)
67 hash_cones(int _Np, double _R2);
73 * insert a new candidate into the hash.
74 * \param v 4-momentum of te cone to add
75 * \param parent parent particle defining the cone
76 * \param child child particle defining the cone
77 * \param p_io whether the parent has to belong to the cone or not
78 * \param c_io whether the child has to belong to the cone or not
79 * \return 0 on success, 1 on error
81 int insert(Cmomentum *v, Cmomentum *parent, Cmomentum *child, bool p_io, bool c_io);
84 * insert a new candidate into the hash.
85 * \param v 4-momentum of te cone to add
86 * Note, in this case, we assume stability. We also assume
87 * that eta and phi are computed for v
88 * \return 0 on success, 1 on error
90 int insert(Cmomentum *v);
92 /// the cone data itself
93 hash_element **hash_array;
95 /// number of elements
98 /// number of occupied cells
99 #ifdef DEBUG_STABLE_CONES
100 int n_occupied_cells;
103 /// number of cells-1
106 /// circle radius (squared)
107 /// NOTE: need to be set before any call to 'insert'
111 * test if a particle is inside a cone of given centre.
112 * check if the particle of coordinates 'v' is inside the circle of radius R
113 * centered at 'centre'.
114 * \param centre centre of the circle
115 * \param v particle to test
116 * \return true if inside, false if outside
118 inline bool is_inside(Cmomentum *centre, Cmomentum *v);