49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
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#ifndef OSRM_TIMEZONES_HPP
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#define OSRM_TIMEZONES_HPP
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#include "util/log.hpp"
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#include <boost/geometry.hpp>
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#include <boost/geometry/index/rtree.hpp>
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#include <chrono>
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namespace osrm
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{
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namespace updater
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{
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// Time zone shape polygons loaded in R-tree
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// local_time_t is a pair of a time zone shape polygon and the corresponding local time
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// rtree_t is a lookup R-tree that maps a geographic point to an index in a local_time_t vector
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using point_t = boost::geometry::model::
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point<double, 2, boost::geometry::cs::spherical_equatorial<boost::geometry::degree>>;
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using polygon_t = boost::geometry::model::polygon<point_t>;
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using box_t = boost::geometry::model::box<point_t>;
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using rtree_t =
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boost::geometry::index::rtree<std::pair<box_t, size_t>, boost::geometry::index::rstar<8>>;
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using local_time_t = std::pair<polygon_t, struct tm>;
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bool SupportsShapefiles();
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class Timezoner
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{
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public:
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Timezoner() = default;
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Timezoner(std::string tz_filename, std::time_t utc_time_now);
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struct tm operator()(const point_t &point) const;
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private:
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void LoadLocalTimesRTree(const std::string &tz_shapes_filename, std::time_t utc_time);
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struct tm default_time;
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rtree_t rtree;
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std::vector<local_time_t> local_times;
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};
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}
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}
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#endif
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