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62 lines
1.4 KiB
C++
62 lines
1.4 KiB
C++
// Boost.Geometry (aka GGL, Generic Geometry Library)
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// QuickBook Example
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// Copyright (c) 2011 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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//[assign
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//` Shows how to assign a geometry to another
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#include <iostream>
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#include <boost/geometry/geometry.hpp>
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#include <boost/geometry/geometries/adapted/tuple_cartesian.hpp>
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int main()
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{
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typedef boost::geometry::model::d2::point_xy<double> point;
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typedef boost::geometry::model::box<point> box;
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typedef boost::geometry::model::polygon<point> polygon;
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point p1;
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box b;
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boost::geometry::assign_values(p1, 1, 1);
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boost::geometry::assign_values(b, 1, 1, 2, 2);
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// Assign a box to a polygon (conversion box->poly)
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polygon p;
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boost::geometry::assign(b, p);
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// Assign a point to another point type (conversion of point-type)
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boost::tuple<double, double> p2;
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boost::geometry::assign(p1, p2);
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using boost::geometry::dsv;
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std::cout
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<< "box: " << dsv(b) << std::endl
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<< "polygon: " << dsv(p) << std::endl
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<< "point: " << dsv(p) << std::endl
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<< "point tuples: " << dsv(p2) << std::endl
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;
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return 0;
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}
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//]
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//[assign_output
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/*`
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Output:
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[pre
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box: ((1, 1), (2, 2))
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first: (1, 1)
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second: (2, 2)
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]
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*/
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//]
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