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line_2d.hpp

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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) 2005-2008 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@yahoo.fr
00024 */
00030 #ifndef __CLAW_LINE_2D_HPP__
00031 #define __CLAW_LINE_2D_HPP__
00032 
00033 #include <claw/coordinate_2d.hpp>
00034 #include <claw/vector_2d.hpp>
00035 
00036 namespace claw
00037 {
00038   namespace math
00039   {
00044     template<class T>
00045     class line_2d
00046     {
00047     public:
00049       typedef T value_type;
00050 
00052       typedef line_2d<value_type> self_type;
00053 
00055       typedef coordinate_2d<value_type> point_type;
00056 
00058       typedef vector_2d<value_type> direction_type;
00059 
00060     public:
00061       line_2d();
00062       template<class U> line_2d( const line_2d<U>& that );
00063       line_2d( const point_type& _origin, const direction_type& _direction );
00064       line_2d( const value_type& ox, const value_type& oy,
00065                const value_type& dx, const value_type& dy );
00066 
00067       bool parallel( const self_type& that ) const;
00068       bool orthogonal( const self_type& that ) const;
00069       point_type intersection( const self_type& that ) const;
00070 
00071       value_type y_value( const value_type& x ) const;
00072 
00073     public:
00075       point_type origin;
00076 
00078       direction_type direction;
00079 
00080     }; // class point_2d
00081   } // namespace math
00082 } // namespace claw
00083 
00084 #include <claw/impl/line_2d.tpp>
00085 
00086 #endif // __CLAW_LINE_2D_HPP__

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