125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
// Boost.Geometry
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// Copyright (c) 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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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_GEOMETRY_STRATEGIES_SIMPLIFY_CARTESIAN_HPP
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#define BOOST_GEOMETRY_STRATEGIES_SIMPLIFY_CARTESIAN_HPP
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#include <boost/geometry/strategies/agnostic/simplify_douglas_peucker.hpp>
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#include <boost/geometry/strategies/cartesian/distance_projected_point.hpp>
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#include <boost/geometry/strategies/cartesian/distance_pythagoras.hpp>
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#include <boost/geometry/strategies/cartesian/point_in_point.hpp>
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#include <boost/geometry/strategies/detail.hpp>
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#include <boost/geometry/strategies/distance/comparable.hpp>
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#include <boost/geometry/strategies/distance/detail.hpp>
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#include <boost/geometry/strategies/simplify/services.hpp>
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#include <boost/geometry/strategy/cartesian/area.hpp>
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#include <boost/geometry/util/type_traits.hpp>
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namespace boost { namespace geometry
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{
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namespace strategies { namespace simplify
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{
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template <typename CalculationType = void>
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struct cartesian
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: public strategies::detail::cartesian_base
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{
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// TODO: Replace this if calculate_point_order() is used in simplify
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template <typename Geometry>
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static auto area(Geometry const&)
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{
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return strategy::area::cartesian<CalculationType>();
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}
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// For perimeter()
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template <typename Geometry1, typename Geometry2>
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static auto distance(Geometry1 const&, Geometry2 const&,
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distance::detail::enable_if_pp_t<Geometry1, Geometry2> * = nullptr)
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{
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return strategy::distance::pythagoras<CalculationType>();
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}
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// For douglas_peucker
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template <typename Geometry1, typename Geometry2>
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static auto distance(Geometry1 const&, Geometry2 const&,
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distance::detail::enable_if_ps_t<Geometry1, Geometry2> * = nullptr)
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{
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return strategy::distance::projected_point
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<
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CalculationType,
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strategy::distance::pythagoras<CalculationType>
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>();
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}
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// For equals()
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template <typename Geometry1, typename Geometry2>
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static auto relate(Geometry1 const&, Geometry2 const&,
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std::enable_if_t
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<
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util::is_pointlike<Geometry1>::value
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&& util::is_pointlike<Geometry2>::value
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> * = nullptr)
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{
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return strategy::within::cartesian_point_point();
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}
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};
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namespace services
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{
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template <typename Geometry>
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struct default_strategy<Geometry, cartesian_tag>
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{
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using type = strategies::simplify::cartesian<>;
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};
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template <typename P, typename CT, typename S>
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struct strategy_converter
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<
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strategy::simplify::douglas_peucker
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<
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P,
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strategy::distance::projected_point<CT, S>
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>
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>
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{
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template <typename Strategy>
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static auto get(Strategy const& )
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{
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typedef strategies::simplify::cartesian<CT> strategy_type;
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return std::conditional_t
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<
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std::is_same
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<
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S,
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typename strategy::distance::services::comparable_type<S>::type
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>::value,
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strategies::distance::detail::comparable<strategy_type>,
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strategy_type
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>();
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}
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};
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} // namespace services
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}} // namespace strategies::simplify
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_STRATEGIES_SIMPLIFY_CARTESIAN_HPP
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