100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
#include "osrm/route_parameters.hpp"
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#include "osrm/table_parameters.hpp"
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#include "osrm/nearest_parameters.hpp"
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#include "osrm/trip_parameters.hpp"
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#include "osrm/match_parameters.hpp"
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#include "osrm/coordinate.hpp"
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#include "osrm/engine_config.hpp"
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#include "osrm/json_container.hpp"
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#include "osrm/status.hpp"
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#include "osrm/osrm.hpp"
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#include <string>
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#include <utility>
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#include <iostream>
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#include <exception>
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#include <cstdlib>
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int main(int argc, const char *argv[]) try
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{
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if (argc < 2)
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{
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std::cerr << "Usage: " << argv[0] << " data.osrm\n";
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return EXIT_FAILURE;
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}
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// Path to .osrm base file
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std::string base{argv[1]};
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// Configure routing machine
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osrm::EngineConfig config;
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// TODO(daniel-j-h): this is ugly, provide easier way for users
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config.server_paths["ramindex"] = base + ".ramIndex";
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config.server_paths["fileindex"] = base + ".fileIndex";
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config.server_paths["hsgrdata"] = base + ".hsgr";
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config.server_paths["nodesdata"] = base + ".nodes";
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config.server_paths["edgesdata"] = base + ".edges";
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config.server_paths["coredata"] = base + ".core";
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config.server_paths["geometries"] = base + ".geometry";
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config.server_paths["timestamp"] = base + ".timestamp";
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config.server_paths["namesdata"] = base + ".names";
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config.use_shared_memory = false;
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// Routing machine with several services (such as Route, Table, Nearest, Trip, Match)
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osrm::OSRM osrm{config};
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// The following shows how to use the Route service; configure this service
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osrm::RouteParameters params;
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// Route is in Berlin. Latitude, Longitude
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// TODO(daniel-j-h): use either coordinate_precision or better provide double,double-taking ctor
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params.coordinates.push_back({static_cast<int>(43.731142 * osrm::COORDINATE_PRECISION),
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static_cast<int>(7.419758 * osrm::COORDINATE_PRECISION)});
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params.coordinates.push_back({static_cast<int>(43.736825 * osrm::COORDINATE_PRECISION),
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static_cast<int>(7.419505 * osrm::COORDINATE_PRECISION)});
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// Response is in JSON format
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osrm::json::Object result;
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// Execute routing request, this does the heavy lifting
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const auto status = osrm.Route(params, result);
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if (status == osrm::Status::Ok)
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{
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auto &routes = result.values["routes"].get<osrm::json::Array>();
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// Let's just use the first route
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auto &route = routes.values.at(0).get<osrm::json::Object>();
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const auto distance = route.values["distance"].get<osrm::json::Number>().value;
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const auto duration = route.values["duration"].get<osrm::json::Number>().value;
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// Warn users if extract does not contain the default Berlin coordinates from above
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if (distance == 0 or duration == 0)
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{
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std::cout << "Note: distance or duration is zero. ";
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std::cout << "You are probably doing a query outside of the OSM extract.\n\n";
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}
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std::cout << "Distance: " << distance << " meter\n";
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std::cout << "Duration: " << duration << " seconds\n";
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}
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else if (status == osrm::Status::Error)
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{
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const auto code = result.values["code"].get<osrm::json::String>().value;
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const auto message = result.values["message"].get<osrm::json::String>().value;
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std::cout << "Code: " << code << "\n";
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std::cout << "Message: " << code << "\n";
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return EXIT_FAILURE;
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}
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}
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catch (const std::exception &e)
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{
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std::cerr << "Error: " << e.what() << std::endl;
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return EXIT_FAILURE;
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}
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