Milena (Olena)
User documentation 2.0a Id
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00001 // Copyright (C) 2007, 2008, 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_FUN_X2X_TRANSLATION_HH 00027 # define MLN_FUN_X2X_TRANSLATION_HH 00028 00032 00033 # include <mln/core/concept/function.hh> 00034 # include <mln/fun/internal/x2x_linear_impl.hh> 00035 # include <mln/algebra/vec.hh> 00036 # include <mln/algebra/h_mat.hh> 00037 # include <mln/fun/i2v/all.hh> 00038 00039 00040 namespace mln 00041 { 00042 00043 namespace fun 00044 { 00045 00046 namespace x2x 00047 { 00048 00050 // 00051 template <unsigned n, typename C> 00052 struct translation 00053 : 00054 fun::internal::x2x_linear_impl_< algebra::vec<n,C>, C, 00055 translation<n,C> >, 00056 public Function_v2v< translation<n,C> > 00057 { 00059 typedef C data_t; 00060 00062 typedef translation<n,C> invert; 00064 invert inv() const; 00065 00067 translation(); 00069 translation(const algebra::vec<n,C>& t); 00070 00072 algebra::vec<n,C> operator()(const algebra::vec<n,C>& v) const; 00073 algebra::vec<n,C> inverse(const algebra::vec<n,C>& v) const; 00074 00075 00077 void set_t(const algebra::vec<n,C>& t); 00078 00080 const algebra::vec<n,C>& t() const; 00081 00082 protected: 00083 void update(); 00084 00085 algebra::vec<n,C> t_; 00086 }; 00087 00088 00089 # ifndef MLN_INCLUDE_ONLY 00090 00091 template <unsigned n, typename C> 00092 inline 00093 translation<n,C>::translation() 00094 { 00095 } 00096 00097 template <unsigned n, typename C> 00098 inline 00099 translation<n,C>::translation(const algebra::vec<n,C>& t) 00100 :t_(t) 00101 { 00102 this->update(); 00103 } 00104 00105 template <unsigned n, typename C> 00106 inline 00107 algebra::vec<n,C> 00108 translation<n,C>::operator()(const algebra::vec<n,C>& v) const 00109 { 00110 return v + t_; 00111 } 00112 00113 template <unsigned n, typename C> 00114 inline 00115 algebra::vec<n,C> 00116 translation<n,C>::inverse(const algebra::vec<n,C>& v) const 00117 { 00118 return v - t_; 00119 } 00120 00121 template <unsigned n, typename C> 00122 inline 00123 translation<n,C> 00124 translation<n,C>::inv() const 00125 { 00126 typename translation::invert res(-t_); 00127 00128 return res; 00129 } 00130 00131 template <unsigned n, typename C> 00132 inline 00133 void 00134 translation<n,C>::set_t(const algebra::vec<n,C>& t) 00135 { 00136 this->t_ = t; 00137 this->update(); 00138 } 00139 00140 template <unsigned n, typename C> 00141 inline 00142 const algebra::vec<n,C>& 00143 translation<n,C>::t() const 00144 { 00145 return this->t_; 00146 } 00147 00148 template <unsigned n, typename C> 00149 inline 00150 void 00151 translation<n,C>::update() 00152 { 00153 this->m_ = algebra::h_mat<n,C>::Id; 00154 for (unsigned i = 0; i < n; ++i) 00155 this->m_(i,n) = this->t_[i]; 00156 } 00157 00158 # endif // ! MLN_INCLUDE_ONLY 00159 00160 00161 } // end of namespace mln::fun::x2x 00162 00163 } // end of namespace mln::fun 00164 00165 } // end of namespace mln 00166 00167 00168 #endif // ! MLN_FUN_X2X_TRANSLATION_HH