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50 lines
1.3 KiB
C++
50 lines
1.3 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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//[register_multi_linestring
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//` Show the use of the macro BOOST_GEOMETRY_REGISTER_MULTI_LINESTRING
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#include <iostream>
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#include <boost/geometry.hpp>
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#include <boost/geometry/geometries/adapted/boost_tuple.hpp>
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#include <boost/geometry/multi/geometries/register/multi_linestring.hpp>
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typedef boost::geometry::model::linestring
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<
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boost::tuple<float, float>
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> linestring_type;
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BOOST_GEOMETRY_REGISTER_BOOST_TUPLE_CS(cs::cartesian)
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BOOST_GEOMETRY_REGISTER_MULTI_LINESTRING(std::deque<linestring_type>)
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int main()
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{
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// Normal usage of std::
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std::deque<linestring_type> lines(2);
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boost::geometry::read_wkt("LINESTRING(0 0,1 1)", lines[0]);
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boost::geometry::read_wkt("LINESTRING(2 2,3 3)", lines[1]);
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// Usage of Boost.Geometry
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std::cout << "LENGTH: " << boost::geometry::length(lines) << std::endl;
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return 0;
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}
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//]
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//[register_multi_linestring_output
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/*`
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Output:
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[pre
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LENGTH: 2.82843
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]
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*/
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//]
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