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46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#pragma once
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#include <mapbox/geometry/geometry.hpp>
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namespace mapbox {
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namespace geometry {
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template <typename Point, typename F>
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auto for_each_point(Point&& point, F&& f)
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-> decltype(point.x, point.y, void())
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{
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f(std::forward<Point>(point));
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}
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template <typename Container, typename F>
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auto for_each_point(Container&& container, F&& f)
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-> decltype(container.begin(), container.end(), void());
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template <typename...Types, typename F>
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void for_each_point(mapbox::util::variant<Types...> const& geom, F&& f)
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{
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mapbox::util::variant<Types...>::visit(geom, [&] (auto const& g) {
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for_each_point(g, f);
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});
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}
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template <typename...Types, typename F>
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void for_each_point(mapbox::util::variant<Types...> & geom, F&& f)
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{
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mapbox::util::variant<Types...>::visit(geom, [&] (auto & g) {
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for_each_point(g, f);
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});
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}
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template <typename Container, typename F>
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auto for_each_point(Container&& container, F&& f)
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-> decltype(container.begin(), container.end(), void())
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{
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for (auto& e: container) {
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for_each_point(e, f);
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}
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}
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} // namespace geometry
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} // namespace mapbox
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