osrm-backend/include/extractor/guidance/roundabout_handler.hpp
Kajari Ghosh 155772f01f
Refactor isThroughStreet/Intersection options (#4751)
* refactor isThroughStreet 
* refactor HaveIdenticalName
* fix a typo in the unit tests
2018-01-19 13:49:00 -05:00

93 lines
3.4 KiB
C++

#ifndef OSRM_EXTRACTOR_GUIDANCE_ROUNDABOUT_HANDLER_HPP_
#define OSRM_EXTRACTOR_GUIDANCE_ROUNDABOUT_HANDLER_HPP_
#include "extractor/compressed_edge_container.hpp"
#include "extractor/guidance/coordinate_extractor.hpp"
#include "extractor/guidance/intersection.hpp"
#include "extractor/guidance/intersection_handler.hpp"
#include "extractor/guidance/is_through_street.hpp"
#include "extractor/guidance/roundabout_type.hpp"
#include "extractor/query_node.hpp"
#include "util/name_table.hpp"
#include "util/node_based_graph.hpp"
#include "util/typedefs.hpp"
#include <unordered_set>
#include <vector>
namespace osrm
{
namespace extractor
{
namespace guidance
{
namespace detail
{
struct RoundaboutFlags
{
bool on_roundabout;
bool can_enter;
bool can_exit_separately;
};
} // namespace detail
// The roundabout handler processes all roundabout related instructions.
// It performs both the distinction between rotaries and roundabouts and
// assigns appropriate entry/exit instructions.
class RoundaboutHandler : public IntersectionHandler
{
public:
RoundaboutHandler(const util::NodeBasedDynamicGraph &node_based_graph,
const EdgeBasedNodeDataContainer &node_data_container,
const std::vector<util::Coordinate> &coordinates,
const extractor::CompressedEdgeContainer &compressed_geometries,
const RestrictionMap &node_restriction_map,
const std::unordered_set<NodeID> &barrier_nodes,
const guidance::TurnLanesIndexedArray &turn_lanes_data,
const util::NameTable &name_table,
const SuffixTable &street_name_suffix_table);
~RoundaboutHandler() override final = default;
// check whether the handler can actually handle the intersection
bool canProcess(const NodeID from_nid,
const EdgeID via_eid,
const Intersection &intersection) const override final;
// process the intersection
Intersection operator()(const NodeID from_nid,
const EdgeID via_eid,
Intersection intersection) const override final;
private:
detail::RoundaboutFlags getRoundaboutFlags(const NodeID from_nid,
const EdgeID via_eid,
const Intersection &intersection) const;
// decide whether we lookk at a roundabout or a rotary
RoundaboutType getRoundaboutType(const NodeID nid) const;
// TODO handle bike/walk cases that allow crossing a roundabout!
// Processing of roundabouts
// Produces instructions to enter/exit a roundabout or to stay on it.
// Performs the distinction between roundabout and rotaries.
Intersection handleRoundabouts(const RoundaboutType roundabout_type,
const EdgeID via_edge,
const bool on_roundabout,
const bool can_exit_roundabout,
Intersection intersection) const;
bool
qualifiesAsRoundaboutIntersection(const std::unordered_set<NodeID> &roundabout_nodes) const;
const CoordinateExtractor coordinate_extractor;
};
} // namespace guidance
} // namespace extractor
} // namespace osrm
#endif /*OSRM_EXTRACTOR_GUIDANCE_ROUNDABOUT_HANDLER_HPP_*/