88 lines
3.5 KiB
C++
88 lines
3.5 KiB
C++
#ifndef OSRM_EXTRACTOR_GUIDANCE_SLIPROAD_HANDLER_HPP_
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#define OSRM_EXTRACTOR_GUIDANCE_SLIPROAD_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/name_table.hpp"
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#include "util/node_based_graph.hpp"
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#include <vector>
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#include <boost/optional.hpp>
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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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// They assign appropriate turn operations to the TurnOperations.
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class SliproadHandler final : public IntersectionHandler
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{
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public:
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SliproadHandler(const IntersectionGenerator &intersection_generator,
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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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~SliproadHandler() 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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boost::optional<std::size_t> getObviousIndexWithSliproads(const EdgeID from,
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const Intersection &intersection,
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const NodeID at) const;
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// Next intersection from `start` onto `onto` is too far away for a Siproad scenario
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bool nextIntersectionIsTooFarAway(const NodeID start, const EdgeID onto) const;
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// Through street: does a road continue with from's name at the intersection
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bool isThroughStreet(const EdgeID from, const IntersectionView &intersection) const;
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// Does the road from `current` to `next` continue
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bool roadContinues(const EdgeID current, const EdgeID next) const;
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// Is the area under the triangle a valid Sliproad triangle
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bool isValidSliproadArea(const double max_area, const NodeID, const NodeID, const NodeID) const;
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// Is the Sliproad a link the both roads it shortcuts must not be links
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bool isValidSliproadLink(const IntersectionViewData &sliproad,
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const IntersectionViewData &first,
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const IntersectionViewData &second) const;
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// check if no mode changes are involved
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bool allSameMode(const EdgeID in_road,
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const EdgeID sliproad_candidate,
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const EdgeID target_road) const;
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// Could a Sliproad reach this intersection?
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static bool canBeTargetOfSliproad(const IntersectionView &intersection);
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// Scales a threshold based on the underlying road classification.
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// Example: a 100 m threshold for a highway if different on living streets.
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// The return value is guaranteed to not be larger than `threshold`.
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static double scaledThresholdByRoadClass(const double max_threshold,
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const RoadClassification &classification);
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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_SLIPROAD_HANDLER_HPP_*/
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