matrix.h

很多二维 三维几何计算算法 C++ 类库

// Copyright (c) 2000  Max-Planck-Institute Saarbruecken (Germany).
// All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you may redistribute it under
// the terms of the Q Public License version 1.0.
// See the file LICENSE.QPL distributed with CGAL.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.3-branch/Partition_2/include/CGAL/Partition_2/Matrix.h $
// $Id: Matrix.h 31311 2006-05-29 08:30:22Z wein $
// 
//
// Author(s)     : Susan Hert <[e-mail]>

#ifndef   CGAL_MATRIX_H
#define   CGAL_MATRIX_H

#include <vector>
#include <iostream>
#include <cstddef>

namespace CGAL {

template <class T>
class  Matrix : public std::vector< std::vector<T> > 
{
public:
   Matrix(std::size_t x = 0, std::size_t y = 0) : 
      std::vector< std::vector<T> > (x, std::vector<T>(y)), 
      _rows(x), _columns(y) 
   {}

   std::size_t rows() const { return _rows; }
   std::size_t columns() const { return _columns; }


protected:
   std::size_t _rows;
   std::size_t _columns;
};

template <class T> 
std::ostream& operator<<(std::ostream& os, const Matrix<T>& m)
{
   typedef typename Matrix<T>::size_type size_type;

   for (size_type i = 0; i < m.rows(); i++) 
   {
      os << std::endl << i << " : ";
      for (size_type j = 0; j < m.columns(); j++) 
      {
         os << m[i][j] << " ";
      }
   }
   return os;
}

}

#endif // CGAL_MATRIX_H