Claw  1.7.0
coordinate_2d.tpp
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00001 /*
00002   CLAW - a C++ Library Absolutely Wonderful
00003 
00004   CLAW is a free library without any particular aim but being useful to 
00005   anyone.
00006 
00007   Copyright (C) 2005-2011 Julien Jorge
00008 
00009   This library is free software; you can redistribute it and/or
00010   modify it under the terms of the GNU Lesser General Public
00011   License as published by the Free Software Foundation; either
00012   version 2.1 of the License, or (at your option) any later version.
00013 
00014   This library is distributed in the hope that it will be useful,
00015   but WITHOUT ANY WARRANTY; without even the implied warranty of
00016   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017   Lesser General Public License for more details.
00018 
00019   You should have received a copy of the GNU Lesser General Public
00020   License along with this library; if not, write to the Free Software
00021   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00022 
00023   contact: julien.jorge@gamned.org
00024 */
00030 #include <cmath>
00031 
00032 /*----------------------------------------------------------------------------*/
00036 template<typename T>
00037 claw::math::coordinate_2d<T>::coordinate_2d()
00038 {
00039 
00040 } // coordinate_2d::coordinate_2d() [constructor]
00041 
00042 /*----------------------------------------------------------------------------*/
00046 template<typename T>
00047 template<typename U>
00048 claw::math::coordinate_2d<T>::coordinate_2d(const coordinate_2d<U>& that)
00049   : x(that.x), y(that.y)
00050 {
00051 
00052 } // coordinate_2d::coordinate_2d() [copy constructor]
00053 
00054 /*----------------------------------------------------------------------------*/
00060 template<typename T>
00061 claw::math::coordinate_2d<T>::coordinate_2d
00062 (const value_type& _x, const value_type& _y)
00063   : x(_x), y(_y)
00064 {
00065 
00066 } // coordinate_2d::coordinate_2d() [constructor whit values]
00067 
00068 /*----------------------------------------------------------------------------*/
00089 template<class T>
00090 template<typename U>
00091 claw::math::coordinate_2d<U>
00092 claw::math::coordinate_2d<T>::cast_value_type_to() const
00093 {
00094   return claw::math::coordinate_2d<U>( (U)x, (U)y );
00095 } // coordinate_2d::cast_value_type_to()
00096 
00097 /*----------------------------------------------------------------------------*/
00103 template<typename T>
00104 void
00105 claw::math::coordinate_2d<T>::set(const value_type& _x, const value_type& _y)
00106 {
00107   x = _x;
00108   y = _y; 
00109 } // coordinate_2d::set()
00110 
00111 /*----------------------------------------------------------------------------*/
00116 template<typename T>
00117 typename claw::math::coordinate_2d<T>::value_type
00118 claw::math::coordinate_2d<T>::distance(const self_type& p) const
00119 {
00120   return (value_type)sqrt( (p.x - x)*(p.x - x) + (p.y - y)*(p.y - y) );
00121 } // coordinate_2d::distance()
00122 
00123 /*----------------------------------------------------------------------------*/
00129 template<typename T>
00130 void
00131 claw::math::coordinate_2d<T>::rotate( const self_type& center, double angle )
00132 {
00133   self_type result(center);
00134 
00135   result.x +=
00136     (x - center.x) * std::cos(angle) - (y - center.y) * std::sin(angle);
00137   result.y +=
00138     (x - center.x) * std::sin(angle) + (y - center.y) * std::cos(angle);
00139 
00140   *this = result;
00141 } // coordinate_2d::rotate()
00142 
00143 /*----------------------------------------------------------------------------*/
00149 template<typename T>
00150 double claw::math::coordinate_2d<T>::slope_angle( const self_type& to ) const
00151 {
00152   return std::atan2( to.y - y, to.x - x );
00153 } // coordinate_2d::slope_angle()
00154 
00155 /*----------------------------------------------------------------------------*/
00160 template<typename T>
00161 bool claw::math::coordinate_2d<T>::operator==(const self_type& that) const
00162 {
00163   return (x == that.x) && (y == that.y);
00164 } // coordinate_2d::operator==()
00165 
00166 /*----------------------------------------------------------------------------*/
00171 template<typename T>
00172 bool claw::math::coordinate_2d<T>::operator!=(const self_type& that) const
00173 {
00174   return !(*this == that);
00175 } // coordinate_2d::operator!=()
00176 
00177 /*----------------------------------------------------------------------------*/
00182 template<typename T>
00183 claw::math::coordinate_2d<T>
00184 claw::math::coordinate_2d<T>::operator+(const self_type& that) const
00185 {
00186   return self_type( x + that.x, y + that.y );
00187 } // coordinate_2d::operator+()
00188 
00189 /*----------------------------------------------------------------------------*/
00194 template<typename T>
00195 claw::math::coordinate_2d<T>
00196 claw::math::coordinate_2d<T>::operator-(const self_type& that) const
00197 {
00198   return self_type( x - that.x, y - that.y );
00199 } // coordinate_2d::operator-()
00200 
00201 /*----------------------------------------------------------------------------*/
00206 template<typename T>
00207 claw::math::coordinate_2d<T>&
00208 claw::math::coordinate_2d<T>::operator+=(const self_type& that)
00209 {
00210   x += that.x;
00211   y += that.y;
00212 
00213   return *this;
00214 } // coordinate_2d::operator+=()
00215 
00216 /*----------------------------------------------------------------------------*/
00221 template<typename T>
00222 claw::math::coordinate_2d<T>&
00223 claw::math::coordinate_2d<T>::operator-=(const self_type& that)
00224 {
00225   x -= that.x;
00226   y -= that.y;
00227 
00228   return *this;
00229 } // coordinate_2d::operator-=()
00230 
00231 /*----------------------------------------------------------------------------*/
00236 template<typename T>
00237 claw::math::coordinate_2d<T>
00238 claw::math::coordinate_2d<T>::operator*(const value_type& v) const
00239 {
00240   return self_type( x * v, y * v );
00241 } // coordinate_2d::operator*()
00242 
00243 /*----------------------------------------------------------------------------*/
00248 template<typename T>
00249 claw::math::coordinate_2d<T>
00250 claw::math::coordinate_2d<T>::operator/(const value_type& v) const
00251 {
00252   return self_type( x / v, y / v );
00253 } // coordinate_2d::operator/()
00254 
00255 /*----------------------------------------------------------------------------*/
00260 template<typename T>
00261 claw::math::coordinate_2d<T>&
00262 claw::math::coordinate_2d<T>::operator*=(const value_type& v)
00263 {
00264   x *= v;
00265   y *= v;
00266 
00267   return *this;
00268 } // coordinate_2d::operator*=()
00269 
00270 /*----------------------------------------------------------------------------*/
00275 template<typename T>
00276 claw::math::coordinate_2d<T>&
00277 claw::math::coordinate_2d<T>::operator/=(const value_type& v)
00278 {
00279   x /= v;
00280   y /= v;
00281 
00282   return *this;
00283 } // coordinate_2d::operator/=()
00284 
00285 /*----------------------------------------------------------------------------*/
00290 template<typename T>
00291 claw::math::coordinate_2d<T>
00292 claw::math::operator-( const claw::math::coordinate_2d<T>& that )
00293 {
00294   return claw::math::coordinate_2d<T>(-that.x, -that.y);
00295 } // operator-() [coordinate_2d]
00296 
00297 /*----------------------------------------------------------------------------*/
00303 template<typename T, typename U>
00304 claw::math::coordinate_2d<T>
00305 claw::math::operator*( U v, const coordinate_2d<T>& self )
00306 {
00307   return self * v;
00308 } // operator*() [coordinate_2d]