// 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) //[assign //` Shows how to assign a geometry from another geometry #include <iostream> #include <boost/geometry.hpp> #include <boost/geometry/geometries/box.hpp> #include <boost/geometry/geometries/point_xy.hpp> #include <boost/geometry/geometries/polygon.hpp> #include <boost/geometry/geometries/adapted/boost_tuple.hpp> BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian) int main() { typedef boost::geometry::model::d2::point_xy<double> point; typedef boost::geometry::model::box<point> box; typedef boost::geometry::model::polygon<point> polygon; point p1; box b; boost::geometry::assign_values(p1, 1, 1); boost::geometry::assign_values(b, 1, 1, 2, 2); // Assign a box to a polygon (target = source) polygon p; boost::geometry::assign(p, b); // Assign a point to another point type (conversion of point-type) boost::tuple<double, double> p2; boost::geometry::assign(p2, p1); using boost::geometry::dsv; std::cout << "box: " << dsv(b) << std::endl << "polygon: " << dsv(p) << std::endl << "point: " << dsv(p1) << std::endl << "point tuples: " << dsv(p2) << std::endl ; return 0; } //] //[assign_output /*` Output: [pre box: ((1, 1), (2, 2)) polygon: (((1, 1), (1, 2), (2, 2), (2, 1), (1, 1))) point: (1, 1) point tuples: (1, 1) ] */ //]