Milena (Olena)
User documentation 2.0a Id
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00001 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00026 #ifndef MLN_CANVAS_MORPHO_INTERNAL_FIND_ROOT_HH 00027 # define MLN_CANVAS_MORPHO_INTERNAL_FIND_ROOT_HH 00028 00034 00035 # include <mln/core/concept/image.hh> 00036 00037 namespace mln 00038 { 00039 00040 namespace canvas 00041 { 00042 00043 namespace morpho 00044 { 00045 00046 namespace internal 00047 { 00048 00049 template <typename I> 00050 inline 00051 mln_psite(I) 00052 find_root(I& parent, const mln_psite(I)& x); 00053 00054 00055 template <typename I> 00056 inline 00057 unsigned 00058 find_root_fastest(I& parent, unsigned x); 00059 00060 00061 # ifndef MLN_INCLUDE_ONLY 00062 00063 00064 template <typename I> 00065 inline 00066 mln_psite(I) 00067 find_root(I& parent, const mln_psite(I)& x) 00068 { 00069 if (parent(x) == x) 00070 return x; 00071 else 00072 return parent(x) = find_root(parent, parent(x)); 00073 } 00074 00075 00076 template <typename I> 00077 inline 00078 unsigned 00079 find_root_fastest(I& parent, unsigned x) 00080 { 00081 if (parent.element(x) == 0) 00082 return x; 00083 else 00084 return parent.element(x) = find_root_fastest(parent, 00085 parent.element(x)); 00086 } 00087 00088 00089 # endif // ! MLN_INCLUDE_ONLY 00090 00091 } // end of namespace mln::canvas::morpho::internal 00092 00093 } // end of namespace mln::canvas::morpho 00094 00095 } // end of namespace mln::canvas 00096 00097 } // end of namespace mln 00098 00099 #endif // ! MLN_CANVAS_MORPHO_INTERNAL_FIND_ROOT_HH