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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)
//[transform
//` Shows how points can be transformed using the default strategy
#include <iostream>
#include <boost/geometry.hpp>
int main()
{
namespace bg = boost::geometry;
// Select a point near the pole (theta=5.0, phi=15.0)
bg::model::point<long double, 2, bg::cs::spherical<bg::degree> > p1(15.0, 5.0);
// Transform from degree to radian. Default strategy is automatically selected,
// it will convert from degree to radian
bg::model::point<long double, 2, bg::cs::spherical<bg::radian> > p2;
bg::transform(p1, p2);
// Transform from degree (lon-lat) to 3D (x,y,z). Default strategy is automatically selected,
// it will consider points on a unit sphere
bg::model::point<long double, 3, bg::cs::cartesian> p3;
bg::transform(p1, p3);
std::cout
<< "p1: " << bg::dsv(p1) << std::endl
<< "p2: " << bg::dsv(p2) << std::endl
<< "p3: " << bg::dsv(p3) << std::endl;
return 0;
}
//]
//[transform_output
/*`
Output:
[pre
p1: (15, 5)
p2: (0.261799, 0.0872665)
p3: (0.084186, 0.0225576, 0.996195)
]
*/
//]
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