116 lines
3.9 KiB
C++
116 lines
3.9 KiB
C++
#ifndef OSRM_EXTRACTOR_GUIDANCE_TURN_HANDLER_HPP_
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#define OSRM_EXTRACTOR_GUIDANCE_TURN_HANDLER_HPP_
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#include "extractor/guidance/intersection.hpp"
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#include "extractor/guidance/intersection_generator.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/attributes.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 <boost/optional.hpp>
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#include <cstddef>
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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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// Intersection handlers deal with all issues related to intersections.
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class TurnHandler : public IntersectionHandler
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{
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public:
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TurnHandler(const util::NodeBasedDynamicGraph &node_based_graph,
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const std::vector<util::Coordinate> &coordinates,
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const util::NameTable &name_table,
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const SuffixTable &street_name_suffix_table,
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const IntersectionGenerator &intersection_generator);
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~TurnHandler() override final = default;
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// check whether the handler can actually handle the intersection
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bool canProcess(const NodeID nid,
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const EdgeID via_eid,
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const Intersection &intersection) const override final;
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// process the intersection
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Intersection operator()(const NodeID nid,
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const EdgeID via_eid,
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Intersection intersection) const override final;
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private:
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struct Fork
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{
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const Intersection::iterator intersection_base;
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const Intersection::iterator begin;
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const Intersection::iterator end;
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const std::size_t size;
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Fork(const Intersection::iterator intersection_base,
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const Intersection::iterator begin,
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const Intersection::iterator end);
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ConnectedRoad &getRight() const;
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ConnectedRoad &getLeft() const;
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ConnectedRoad &getMiddle() const;
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ConnectedRoad &getRight();
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ConnectedRoad &getLeft();
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ConnectedRoad &getMiddle();
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std::size_t getRightIndex() const;
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std::size_t getLeftIndex() const;
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};
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bool isObviousOfTwo(const EdgeID via_edge,
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const ConnectedRoad &road,
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const ConnectedRoad &other) const;
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bool hasObvious(const EdgeID &via_edge, const Fork &fork) const;
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boost::optional<Fork> findForkCandidatesByGeometry(Intersection &intersection) const;
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bool isCompatibleByRoadClass(const Intersection &intersection, const Fork fork) const;
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// Dead end.
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OSRM_ATTR_WARN_UNUSED
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Intersection handleOneWayTurn(Intersection intersection) const;
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// Mode Changes, new names...
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OSRM_ATTR_WARN_UNUSED
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Intersection handleTwoWayTurn(const EdgeID via_edge, Intersection intersection) const;
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// Forks, T intersections and similar
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OSRM_ATTR_WARN_UNUSED
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Intersection handleThreeWayTurn(const EdgeID via_edge, Intersection intersection) const;
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// Handling of turns larger then degree three
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OSRM_ATTR_WARN_UNUSED
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Intersection handleComplexTurn(const EdgeID via_edge, Intersection intersection) const;
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void
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handleDistinctConflict(const EdgeID via_edge, ConnectedRoad &left, ConnectedRoad &right) const;
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// Classification
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boost::optional<Fork> findFork(const EdgeID via_edge, Intersection &intersection) const;
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OSRM_ATTR_WARN_UNUSED
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Intersection assignLeftTurns(const EdgeID via_edge,
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Intersection intersection,
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const std::size_t starting_at) const;
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OSRM_ATTR_WARN_UNUSED
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Intersection assignRightTurns(const EdgeID via_edge,
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Intersection intersection,
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const std::size_t up_to) 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_TURN_HANDLER_HPP_*/
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