osrm-backend/contractor/edge_based_graph_factory.hpp

/*

Copyright (c) 2014, Project OSRM, Dennis Luxen, others
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list
of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

//  This class constructs the edge-expanded routing graph

#ifndef EDGE_BASED_GRAPH_FACTORY_HPP_
#define EDGE_BASED_GRAPH_FACTORY_HPP_

#include "speed_profile.hpp"
#include "../typedefs.h"
#include "../data_structures/compressed_edge_container.hpp"
#include "../data_structures/deallocating_vector.hpp"
#include "../data_structures/edge_based_node.hpp"
#include "../data_structures/original_edge_data.hpp"
#include "../data_structures/query_node.hpp"
#include "../data_structures/turn_instructions.hpp"
#include "../data_structures/node_based_graph.hpp"
#include "../data_structures/restriction_map.hpp"

#include <algorithm>
#include <iosfwd>
#include <memory>
#include <queue>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>

struct lua_State;

class EdgeBasedGraphFactory
{
  public:
    EdgeBasedGraphFactory() = delete;
    EdgeBasedGraphFactory(const EdgeBasedGraphFactory &) = delete;


    explicit EdgeBasedGraphFactory(std::shared_ptr<NodeBasedDynamicGraph> node_based_graph,
                                   const CompressedEdgeContainer& compressed_edge_container,
                                   const std::unordered_set<NodeID>& barrier_nodes,
                                   const std::unordered_set<NodeID>& traffic_lights,
                                   std::shared_ptr<const RestrictionMap> restriction_map,
                                   const std::vector<QueryNode> &node_info_list,
                                   const SpeedProfileProperties &speed_profile);

    void Run(const std::string &original_edge_data_filename,
             lua_State *lua_state);

    void GetEdgeBasedEdges(DeallocatingVector<EdgeBasedEdge> &edges);

    void GetEdgeBasedNodes(std::vector<EdgeBasedNode> &nodes);

    TurnInstruction AnalyzeTurn(const NodeID u, const NodeID v, const NodeID w, const double angle) const;

    int GetTurnPenalty(double angle, lua_State *lua_state) const;

  private:
    using EdgeData = NodeBasedDynamicGraph::EdgeData;

    std::vector<EdgeBasedNode> m_edge_based_node_list;
    DeallocatingVector<EdgeBasedEdge> m_edge_based_edge_list;

    const std::vector<QueryNode>& m_node_info_list;
    std::shared_ptr<NodeBasedDynamicGraph> m_node_based_graph;
    std::shared_ptr<RestrictionMap const> m_restriction_map;

    const std::unordered_set<NodeID>& m_barrier_nodes;
    const std::unordered_set<NodeID>& m_traffic_lights;
    const CompressedEdgeContainer& m_compressed_edge_container;

    SpeedProfileProperties speed_profile;

    void CompressGeometry();
    void RenumberEdges();
    void GenerateEdgeExpandedNodes();
    void GenerateEdgeExpandedEdges(const std::string &original_edge_data_filename,
                                   lua_State *lua_state);

    void InsertEdgeBasedNode(const NodeID u, const NodeID v, const unsigned component_id);

    void FlushVectorToStream(std::ofstream &edge_data_file,
                             std::vector<OriginalEdgeData> &original_edge_data_vector) const;

};

#endif /* EDGE_BASED_GRAPH_FACTORY_HPP_ */