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// Boost.Geometry (aka GGL, Generic Geometry Library)
// QuickBook Example
// Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands.
// Use, modification and distribution is subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//[simplify
//` Example showing how to simplify a linestring
#include <iostream>
#include <boost/geometry.hpp>
#include <boost/geometry/geometries/linestring.hpp>
#include <boost/geometry/geometries/point_xy.hpp>
/*< For this example we use Boost.Assign to add points >*/
#include <boost/assign.hpp>
using namespace boost::assign;
int main()
{
typedef boost::geometry::model::d2::point_xy<double> xy;
boost::geometry::model::linestring<xy> line;
line += xy(1.1, 1.1), xy(2.5, 2.1), xy(3.1, 3.1), xy(4.9, 1.1), xy(3.1, 1.9); /*< With Boost.Assign >*/
// Simplify it, using distance of 0.5 units
boost::geometry::model::linestring<xy> simplified;
boost::geometry::simplify(line, simplified, 0.5);
std::cout
<< " original: " << boost::geometry::dsv(line) << std::endl
<< "simplified: " << boost::geometry::dsv(simplified) << std::endl;
return 0;
}
//]
//[simplify_output
/*`
Output:
[pre
original: ((1.1, 1.1), (2.5, 2.1), (3.1, 3.1), (4.9, 1.1), (3.1, 1.9))
simplified: ((1.1, 1.1), (3.1, 3.1), (4.9, 1.1), (3.1, 1.9))
]
*/
//]
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