5266ac1635
Currently OSRM only supports turn restrictions with a single via-node or one via-way. OSM allows for multiple via-ways to represent longer and more complex restrictions. This PR extends the use of duplicate nodes for representng via-way turn restrictions to also support multi via-way restrictions. Effectively, this increases the edge-based graph size by the number of edges in multi via-way restrictions. However, given the low number of these restrictions it has little effect on total graph size. In addition, we add a new step in the extraction phase that constructs a restriction graph to support more complex relationships between restrictions, such as nested restrictions and overlapping restrictions.
57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
#ifndef NODES_OF_WAY_HPP
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#define NODES_OF_WAY_HPP
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#include "util/typedefs.hpp"
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#include <limits>
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#include <string>
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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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// NodesOfWay contains the ordered nodes of a way and provides convenience functions for getting
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// nodes in the first and last segments.
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struct NodesOfWay
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{
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OSMWayID way_id;
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std::vector<OSMNodeID> node_ids;
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NodesOfWay() : way_id(SPECIAL_OSM_WAYID), node_ids{SPECIAL_OSM_NODEID, SPECIAL_OSM_NODEID} {}
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NodesOfWay(OSMWayID w, std::vector<OSMNodeID> ns) : way_id(w), node_ids(std::move(ns)) {}
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static NodesOfWay min_value() { return {MIN_OSM_WAYID, {MIN_OSM_NODEID, MIN_OSM_NODEID}}; }
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static NodesOfWay max_value() { return {MAX_OSM_WAYID, {MAX_OSM_NODEID, MAX_OSM_NODEID}}; }
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const OSMNodeID &first_segment_source_id() const
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{
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BOOST_ASSERT(!node_ids.empty());
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return node_ids[0];
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}
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const OSMNodeID &first_segment_target_id() const
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{
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BOOST_ASSERT(node_ids.size() > 1);
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return node_ids[1];
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}
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const OSMNodeID &last_segment_source_id() const
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{
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BOOST_ASSERT(node_ids.size() > 1);
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return node_ids[node_ids.size() - 2];
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}
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const OSMNodeID &last_segment_target_id() const
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{
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BOOST_ASSERT(!node_ids.empty());
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return node_ids[node_ids.size() - 1];
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}
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};
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} // namespace extractor
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} // namespace osrm
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#endif /* NODES_OF_WAY_HPP */
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