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ff67f4a6d0
Add mising #ifdef conditions enabling the example of std::initializer_list support. Remove unneeded semicolons from comments. Add missing QBK import (point_xy).
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
// Boost.Geometry
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// QuickBook Example
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// Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2015 Adam Wulkiewicz, Lodz, Poland.
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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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//[box
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//` Declaration and use of the Boost.Geometry model::box, modelling the Box Concept
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#include <iostream>
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#include <boost/geometry.hpp>
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namespace bg = boost::geometry;
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int main()
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{
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typedef bg::model::point<double, 2, bg::cs::cartesian> point_t;
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typedef bg::model::box<point_t> box_t;
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box_t box1; /*< Default-construct a box. >*/
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box_t box2(point_t(0.0, 0.0), point_t(5.0, 5.0)); /*< Construct, assigning min and max corner point. >*/
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#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
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box_t box3{{0.0, 0.0}, {5.0, 5.0}}; /*< Construct, using C++11 unified initialization syntax. >*/
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#endif
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bg::set<bg::min_corner, 0>(box1, 1.0); /*< Set a coordinate, generic. >*/
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bg::set<bg::min_corner, 1>(box1, 2.0);
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box1.max_corner().set<0>(3.0); /*< Set a coordinate, class-specific ([*Note]: prefer `bg::set()`). >*/
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box1.max_corner().set<1>(4.0);
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double min_x = bg::get<bg::min_corner, 0>(box1); /*< Get a coordinate, generic. >*/
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double min_y = bg::get<bg::min_corner, 1>(box1);
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double max_x = box1.max_corner().get<0>(); /*< Get a coordinate, class-specific ([*Note]: prefer `bg::get()`). >*/
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double max_y = box1.max_corner().get<1>();
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std::cout << min_x << ", " << min_y << ", " << max_x << ", " << max_y << std::endl;
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return 0;
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}
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//]
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//[box_output
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/*`
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Output:
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[pre
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1, 2, 3, 4
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]
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*/
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//]
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