93299d6651
- refactor conditional restriction handling to not use external data (first OSM nodes on ways) - BREAKING: changes internal file format of osrm.restrictions - add support for general conditional penalties based on edge-based nodes (requires unique edges between nodes)
49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
#ifndef OSRM_EXTRACTOR_RESTRICTION_COMPRESSOR_HPP_
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#define OSRM_EXTRACTOR_RESTRICTION_COMPRESSOR_HPP_
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#include "extractor/restriction.hpp"
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#include "util/typedefs.hpp"
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#include <boost/unordered_map.hpp>
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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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struct NodeRestriction;
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struct TurnRestriction;
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// OSRM stores restrictions in the form node -> node -> node instead of way -> node -> way (or
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// way->way->way) as it is done in OSM. These restrictions need to match the state of graph
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// compression which we perform in the graph compressor that removes certain degree two nodes from
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// the graph (all but the ones with penalties/barriers, as of the state of writing).
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// Since this graph compression ins performed after creating the restrictions in the extraction
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// phase, we need to update the involved nodes whenever one of the nodes is compressed.
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//
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//
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// !!!! Will bind to the restrictions vector and modify it in-place !!!!
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class RestrictionCompressor
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{
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public:
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RestrictionCompressor(std::vector<TurnRestriction> &restrictions,
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std::vector<ConditionalTurnRestriction> &conditional_turn_restrictions);
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// account for the compression of `from-via-to` into `from-to`
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void Compress(const NodeID from, const NodeID via, const NodeID to);
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private:
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// a turn restriction is given as `from star via node to end`. Edges ending at `head` being
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// contracted move the head pointer to their respective head. Edges starting at tail move the
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// tail values to their respective tails. Way turn restrictions are represented by two
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// node-restrictions, so we can focus on them alone
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boost::unordered_multimap<NodeID, NodeRestriction *> starts;
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boost::unordered_multimap<NodeID, NodeRestriction *> ends;
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};
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} // namespace extractor
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} // namespace osrm
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#endif // OSRM_EXTRACTOR_RESTRICTION_COMPRESSOR_HPP_
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