mirror of
https://github.com/boostorg/geometry.git
synced 2026-02-12 00:02:09 +00:00
41 lines
929 B
C++
41 lines
929 B
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
|
|
// QuickBook Example
|
|
|
|
// Copyright (c) 2011 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)
|
|
|
|
//[length
|
|
//` The following simple example shows the calculation of the length of a linestring containing three points
|
|
|
|
#include <iostream>
|
|
#include <boost/geometry/geometry.hpp>
|
|
#include <boost/geometry/domains/gis/io/wkt/wkt.hpp>
|
|
|
|
|
|
int main()
|
|
{
|
|
using namespace boost::geometry;
|
|
model::linestring<model::d2::point_xy<double> > line;
|
|
read_wkt("linestring(0 0,1 1,4 8,3 2)", line);
|
|
std::cout << "linestring length is "
|
|
<< length(line)
|
|
<< " units" << std::endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
//]
|
|
|
|
|
|
//[length_output
|
|
/*`
|
|
Output:
|
|
[pre
|
|
linestring length is 15.1127 units
|
|
]
|
|
*/
|
|
//]
|