// Boost.Geometry // QuickBook Example // Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands. // Copyright (c) 2015 Adam Wulkiewicz, Lodz, Poland. // 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) //[multi_point //` Declaration and use of the Boost.Geometry model::multi_point, modelling the MultiPoint Concept #include #include #include namespace bg = boost::geometry; int main() { typedef bg::model::point point_t; typedef bg::model::multi_point mpoint_t; mpoint_t mpt1; /*< Default-construct a multi_point. >*/ #if !defined(BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX) \ && !defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST) mpoint_t mpt2{{{0.0, 0.0}, {1.0, 1.0}, {2.0, 2.0}}}; /*< Construct a multi_point containing three points, using C++11 unified initialization syntax. >*/ #endif bg::append(mpt1, point_t(0.0, 0.0)); /*< Append point to the multi_point. >*/ bg::append(mpt1, point_t(1.0, 1.0)); bg::append(mpt1, point_t(2.0, 2.0)); std::size_t count = bg::num_points(mpt1); std::cout << count << std::endl; return 0; } //] //[multi_point_output /*` Output: [pre 3 ] */ //]