osrm-backend/include/engine/api/json_factory.hpp
Daniel Patterson 0fc1aa2711 Adds turn instructions to the turns layer in debug tiles. ()
Add turn types and modifiers to turn points in debug tiles.  Also refactor some of the tile code to reduce some repetition.
2017-09-01 15:08:22 -07:00

120 lines
3.9 KiB
C++

#ifndef ENGINE_RESPONSE_OBJECTS_HPP_
#define ENGINE_RESPONSE_OBJECTS_HPP_
#include "extractor/guidance/turn_instruction.hpp"
#include "extractor/travel_mode.hpp"
#include "engine/guidance/leg_geometry.hpp"
#include "engine/guidance/route.hpp"
#include "engine/guidance/route_leg.hpp"
#include "engine/guidance/route_step.hpp"
#include "engine/guidance/step_maneuver.hpp"
#include "engine/polyline_compressor.hpp"
#include "util/coordinate.hpp"
#include "util/json_container.hpp"
#include <boost/optional.hpp>
#include <algorithm>
#include <iterator>
#include <string>
#include <vector>
namespace osrm
{
namespace engine
{
struct Hint;
namespace api
{
namespace json
{
namespace detail
{
std::string instructionTypeToString(extractor::guidance::TurnType::Enum type);
std::string instructionModifierToString(extractor::guidance::DirectionModifier::Enum modifier);
/**
* Returns a string representing all instruction types (including internal types that
* are normally not exposed in route responses)
*
* @param type the TurnType value to convert into a string
* @return a string representing the turn type (e.g. `turn` or `continue`)
*/
std::string internalInstructionTypeToString(extractor::guidance::TurnType::Enum type);
util::json::Array coordinateToLonLat(const util::Coordinate coordinate);
std::string modeToString(const extractor::TravelMode mode);
/**
* Ensures that a bearing value is a whole number, and clamped to the range 0-359
*/
inline double roundAndClampBearing(double bearing) { return std::fmod(std::round(bearing), 360); }
} // namespace detail
template <unsigned POLYLINE_PRECISION, typename ForwardIter>
util::json::String makePolyline(ForwardIter begin, ForwardIter end)
{
return {encodePolyline<POLYLINE_PRECISION>(begin, end)};
}
template <typename ForwardIter>
util::json::Object makeGeoJSONGeometry(ForwardIter begin, ForwardIter end)
{
auto num_coordinates = std::distance(begin, end);
BOOST_ASSERT(num_coordinates != 0);
util::json::Object geojson;
geojson.values["type"] = "LineString";
util::json::Array coordinates;
if (num_coordinates > 1)
{
coordinates.values.reserve(num_coordinates);
auto into = std::back_inserter(coordinates.values);
std::transform(begin, end, into, &detail::coordinateToLonLat);
}
else if (num_coordinates > 0)
{
// For a single location we create a [location, location] LineString
// instead of a single Point making the GeoJSON output consistent.
coordinates.values.reserve(2);
auto location = detail::coordinateToLonLat(*begin);
coordinates.values.push_back(location);
coordinates.values.push_back(location);
}
geojson.values["coordinates"] = std::move(coordinates);
return geojson;
}
util::json::Object makeStepManeuver(const guidance::StepManeuver &maneuver);
util::json::Object makeRouteStep(guidance::RouteStep step, util::json::Value geometry);
util::json::Object makeRoute(const guidance::Route &route,
util::json::Array legs,
boost::optional<util::json::Value> geometry,
const char *weight_name);
// Creates a Waypoint without Hint, see the Hint overload below
util::json::Object makeWaypoint(const util::Coordinate location, std::string name);
// Creates a Waypoint with Hint, see the overload above when Hint is not needed
util::json::Object
makeWaypoint(const util::Coordinate location, std::string name, const Hint &hint);
util::json::Object makeRouteLeg(guidance::RouteLeg leg, util::json::Array steps);
util::json::Array makeRouteLegs(std::vector<guidance::RouteLeg> legs,
std::vector<util::json::Value> step_geometries,
std::vector<util::json::Object> annotations);
}
}
} // namespace engine
} // namespace osrm
#endif // ENGINE_GUIDANCE_API_RESPONSE_GENERATOR_HPP_