// 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) //[point_xy //` Declaration and use of the Boost.Geometry model::d2::point_xy, modelling the Point Concept #include #include #include namespace bg = boost::geometry; int main() { bg::model::d2::point_xy point1; bg::model::d2::point_xy point2(1.0, 2.0); /*< Construct, assigning coordinates. >*/ bg::set<0>(point1, 1.0); /*< Set a coordinate, generic. >*/ point1.y(2.0); /*< Set a coordinate, class-specific ([*Note]: prefer `bg::set()`). >*/ double x = bg::get<0>(point1); /*< Get a coordinate, generic. >*/ double y = point1.y(); /*< Get a coordinate, class-specific ([*Note]: prefer `bg::get()`). >*/ std::cout << x << ", " << y << std::endl; return 0; } //] //[point_xy_output /*` Output: [pre 1, 2 ] */ //]