110 lines
2.9 KiB
C++
110 lines
2.9 KiB
C++
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// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
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// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
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// This file was modified by Oracle on 2020-2021.
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// Modifications copyright (c) 2020-2021 Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
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// (geolib/GGL), copyright (c) 1995-2010 Geodan, 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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#ifndef BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_MULTI_LINESTRING_CONCEPT_HPP
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#define BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_MULTI_LINESTRING_CONCEPT_HPP
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#include <boost/concept_check.hpp>
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#include <boost/range/concepts.hpp>
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#include <boost/range/value_type.hpp>
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#include <boost/geometry/geometries/concepts/concept_type.hpp>
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#include <boost/geometry/geometries/concepts/linestring_concept.hpp>
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namespace boost { namespace geometry { namespace concepts
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{
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/*!
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\brief multi-linestring concept
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\ingroup concepts
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\par Formal definition:
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The multi linestring concept is defined as following:
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- there must be a specialization of traits::tag defining multi_linestring_tag as
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type
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- it must behave like a Boost.Range
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- its range value must fulfil the Linestring concept
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*/
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template <typename Geometry>
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class MultiLinestring
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{
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#ifndef DOXYGEN_NO_CONCEPT_MEMBERS
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typedef typename boost::range_value<Geometry>::type linestring_type;
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BOOST_CONCEPT_ASSERT( (concepts::Linestring<linestring_type>) );
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BOOST_CONCEPT_ASSERT( (boost::RandomAccessRangeConcept<Geometry>) );
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public :
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BOOST_CONCEPT_USAGE(MultiLinestring)
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{
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Geometry* mls = 0;
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traits::clear<Geometry>::apply(*mls);
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traits::resize<Geometry>::apply(*mls, 0);
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linestring_type* ls = 0;
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traits::push_back<Geometry>::apply(*mls, *ls);
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}
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#endif
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};
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/*!
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\brief concept for multi-linestring (const version)
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\ingroup const_concepts
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*/
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template <typename Geometry>
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class ConstMultiLinestring
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{
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#ifndef DOXYGEN_NO_CONCEPT_MEMBERS
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typedef typename boost::range_value<Geometry>::type linestring_type;
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BOOST_CONCEPT_ASSERT( (concepts::ConstLinestring<linestring_type>) );
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BOOST_CONCEPT_ASSERT( (boost::RandomAccessRangeConcept<Geometry>) );
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public :
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BOOST_CONCEPT_USAGE(ConstMultiLinestring)
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{
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}
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#endif
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};
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template <typename Geometry>
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struct concept_type<Geometry, multi_linestring_tag>
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{
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using type = MultiLinestring<Geometry>;
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};
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template <typename Geometry>
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struct concept_type<Geometry const, multi_linestring_tag>
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{
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using type = ConstMultiLinestring<Geometry>;
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};
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}}} // namespace boost::geometry::concepts
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#endif // BOOST_GEOMETRY_GEOMETRIES_CONCEPTS_MULTI_LINESTRING_CONCEPT_HPP
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