72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
#ifndef OSRM_EXTRACTOR_GUIDANCE_ROUNDABOUT_HANDLER_HPP_
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#define OSRM_EXTRACTOR_GUIDANCE_ROUNDABOUT_HANDLER_HPP_
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#include "extractor/guidance/intersection.hpp"
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#include "extractor/guidance/intersection_handler.hpp"
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#include "extractor/query_node.hpp"
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#include "util/name_table.hpp"
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#include "util/node_based_graph.hpp"
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#include "util/typedefs.hpp"
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#include <utility>
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#include <vector>
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namespace osrm
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{
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namespace extractor
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{
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namespace guidance
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{
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namespace detail
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{
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struct RoundaboutFlags
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{
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bool on_roundabout;
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bool can_enter;
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bool can_exit_separately;
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};
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} // namespace detail
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// The roundabout handler processes all roundabout related instructions.
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// It performs both the distinction between rotaries and roundabouts and
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// assigns appropriate entry/exit instructions.
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class RoundaboutHandler : public IntersectionHandler
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{
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public:
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RoundaboutHandler(const util::NodeBasedDynamicGraph &node_based_graph,
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const std::vector<QueryNode> &node_info_list,
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const util::NameTable &name_table);
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~RoundaboutHandler() override final;
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// check whether the handler can actually handle the intersection
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bool canProcess(const NodeID from_nid, const EdgeID via_eid, const Intersection &intersection) const override final;
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// process the intersection
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Intersection operator()(const NodeID from_nid, const EdgeID via_eid, Intersection intersection) const override final;
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private:
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detail::RoundaboutFlags getRoundaboutFlags(const NodeID from_nid, const EdgeID via_eid, const Intersection &intersection) const;
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// decide whether we lookk at a roundabout or a rotary
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bool isRotary(const NodeID nid) const;
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// TODO handle bike/walk cases that allow crossing a roundabout!
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// Processing of roundabouts
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// Produces instructions to enter/exit a roundabout or to stay on it.
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// Performs the distinction between roundabout and rotaries.
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Intersection handleRoundabouts(const bool is_rotary,
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const EdgeID via_edge,
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const bool on_roundabout,
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const bool can_exit_roundabout,
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Intersection intersection) const;
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};
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} // namespace guidance
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} // namespace extractor
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} // namespace osrm
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#endif /*OSRM_EXTRACTOR_GUIDANCE_ROUNDABOUT_HANDLER_HPP_*/
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