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48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// QuickBook Example
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// Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//[degree_radian
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//` Specify two coordinate systems, one in degrees, one in radians.
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#include <iostream>
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#include <boost/geometry.hpp>
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using namespace boost::geometry;
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int main()
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{
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typedef model::point<double, 2, cs::spherical_equatorial<degree> > degree_point;
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typedef model::point<double, 2, cs::spherical_equatorial<radian> > radian_point;
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degree_point d(4.893, 52.373);
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radian_point r(0.041, 0.8527);
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double dist = distance(d, r);
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std::cout
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<< "distance:" << std::endl
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<< dist << " over unit sphere" << std::endl
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<< dist * 3959 << " over a spherical earth, in miles" << std::endl;
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return 0;
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}
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//]
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//[degree_radian_output
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/*`
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Output:
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[pre
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distance:
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0.0675272 over unit sphere
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267.34 over a spherical earth, in miles
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]
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*/
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//]
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