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route_api.hpp
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#ifndef ENGINE_API_ROUTE_HPP
#define ENGINE_API_ROUTE_HPP
#include "extractor/maneuver_override.hpp"
#include "engine/api/base_api.hpp"
#include "engine/api/base_result.hpp"
#include "engine/api/json_factory.hpp"
#include "engine/api/route_parameters.hpp"
#include "engine/datafacade/datafacade_base.hpp"
#include "engine/guidance/assemble_geometry.hpp"
#include "engine/guidance/assemble_leg.hpp"
#include "engine/guidance/assemble_overview.hpp"
#include "engine/guidance/assemble_route.hpp"
#include "engine/guidance/assemble_steps.hpp"
#include "engine/guidance/collapse_turns.hpp"
#include "engine/guidance/lane_processing.hpp"
#include "engine/guidance/post_processing.hpp"
#include "engine/guidance/verbosity_reduction.hpp"
#include "engine/internal_route_result.hpp"
#include "guidance/turn_instruction.hpp"
#include "util/coordinate.hpp"
#include "util/integer_range.hpp"
#include "util/json_util.hpp"
#include <iterator>
#include <map>
#include <vector>
namespace osrm
{
namespace engine
{
namespace api
{
class RouteAPI : public BaseAPI
{
public:
RouteAPI(const datafacade::BaseDataFacade &facade_, const RouteParameters ¶meters_)
: BaseAPI(facade_, parameters_), parameters(parameters_)
{
}
void
MakeResponse(const InternalManyRoutesResult &raw_routes,
const std::vector<PhantomNodeCandidates>
&waypoint_candidates, // all used coordinates, ignoring waypoints= parameter
osrm::engine::api::ResultT &response) const
{
BOOST_ASSERT(!raw_routes.routes.empty());
if (response.is<flatbuffers::FlatBufferBuilder>())
{
auto &fb_result = response.get<flatbuffers::FlatBufferBuilder>();
MakeResponse(raw_routes, waypoint_candidates, fb_result);
}
else
{
auto &json_result = response.get<util::json::Object>();
MakeResponse(raw_routes, waypoint_candidates, json_result);
}
}
void
MakeResponse(const InternalManyRoutesResult &raw_routes,
const std::vector<PhantomNodeCandidates>
&waypoint_candidates, // all used coordinates, ignoring waypoints= parameter
flatbuffers::FlatBufferBuilder &fb_result) const
{
auto data_timestamp = facade.GetTimestamp();
flatbuffers::Offset<flatbuffers::String> data_version_string;
if (!data_timestamp.empty())
{
data_version_string = fb_result.CreateString(data_timestamp);
}
auto response =
MakeFBResponse(raw_routes, fb_result, [this, &waypoint_candidates, &fb_result]() {
return BaseAPI::MakeWaypoints(&fb_result, waypoint_candidates);
});
if (!data_timestamp.empty())
{
response->add_data_version(data_version_string);
}
fb_result.Finish(response->Finish());
}
void
MakeResponse(const InternalManyRoutesResult &raw_routes,
const std::vector<PhantomNodeCandidates>
&waypoint_candidates, // all used coordinates, ignoring waypoints= parameter
util::json::Object &response) const
{
util::json::Array jsRoutes;
for (const auto &route : raw_routes.routes)
{
if (!route.is_valid())
continue;
jsRoutes.values.push_back(MakeRoute(route.leg_endpoints,
route.unpacked_path_segments,
route.source_traversed_in_reverse,
route.target_traversed_in_reverse));
}
if (!parameters.skip_waypoints)
{
response.values["waypoints"] = BaseAPI::MakeWaypoints(waypoint_candidates);
}
response.values["routes"] = std::move(jsRoutes);
response.values["code"] = "Ok";
auto data_timestamp = facade.GetTimestamp();
if (!data_timestamp.empty())
{
response.values["data_version"] = data_timestamp;
}
}
protected:
template <typename GetWptsFn>
std::unique_ptr<fbresult::FBResultBuilder>
MakeFBResponse(const InternalManyRoutesResult &raw_routes,
flatbuffers::FlatBufferBuilder &fb_result,
GetWptsFn getWaypoints) const
{
std::vector<flatbuffers::Offset<fbresult::RouteObject>> routes;
for (const auto &raw_route : raw_routes.routes)
{
if (!raw_route.is_valid())
continue;
routes.push_back(MakeRoute(fb_result,
raw_route.leg_endpoints,
raw_route.unpacked_path_segments,
raw_route.source_traversed_in_reverse,
raw_route.target_traversed_in_reverse));
}
auto routes_vector = fb_result.CreateVector(routes);
flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<fbresult::Waypoint>>>
waypoints_vector;
if (!parameters.skip_waypoints)
{
waypoints_vector = getWaypoints();
}
auto response = std::make_unique<fbresult::FBResultBuilder>(fb_result);
response->add_routes(routes_vector);
response->add_waypoints(waypoints_vector);
return response;
}
template <typename ForwardIter>
mapbox::util::variant<flatbuffers::Offset<flatbuffers::String>,
flatbuffers::Offset<flatbuffers::Vector<const fbresult::Position *>>>
MakeGeometry(flatbuffers::FlatBufferBuilder &builder, ForwardIter begin, ForwardIter end) const
{
if (parameters.geometries == RouteParameters::GeometriesType::Polyline)
{
return builder.CreateString(encodePolyline<100000>(begin, end));
}
else if (parameters.geometries == RouteParameters::GeometriesType::Polyline6)
{
return builder.CreateString(encodePolyline<1000000>(begin, end));
}
std::vector<fbresult::Position> coordinates;
coordinates.resize(std::distance(begin, end));
std::transform(begin, end, coordinates.begin(), [](const Coordinate &c) {
return fbresult::Position{static_cast<float>(util::toFloating(c.lon).__value),
static_cast<float>(util::toFloating(c.lat).__value)};
});
return builder.CreateVectorOfStructs(coordinates);
}
boost::optional<util::json::Value>
MakeGeometry(boost::optional<std::vector<Coordinate>> &&annotations) const
{
boost::optional<util::json::Value> json_geometry;
if (annotations)
{
auto begin = annotations->begin();
auto end = annotations->end();
if (parameters.geometries == RouteParameters::GeometriesType::Polyline)
{
json_geometry = json::makePolyline<100000>(begin, end);
}
else if (parameters.geometries == RouteParameters::GeometriesType::Polyline6)
{
json_geometry = json::makePolyline<1000000>(begin, end);
}
else
{
BOOST_ASSERT(parameters.geometries == RouteParameters::GeometriesType::GeoJSON);
json_geometry = json::makeGeoJSONGeometry(begin, end);
}
}
return json_geometry;
}
template <typename ValueType, typename GetFn>
flatbuffers::Offset<flatbuffers::Vector<ValueType>> GetAnnotations(
flatbuffers::FlatBufferBuilder &fb_result, guidance::LegGeometry &leg, GetFn Get) const
{
std::vector<ValueType> annotations_store;
annotations_store.reserve(leg.annotations.size());
for (const auto &step : leg.annotations)
{
annotations_store.push_back(Get(step));
}
return fb_result.CreateVector(annotations_store);
}
template <typename GetFn>
util::json::Array GetAnnotations(const guidance::LegGeometry &leg, GetFn Get) const
{
util::json::Array annotations_store;
annotations_store.values.reserve(leg.annotations.size());
for (const auto &step : leg.annotations)
{
annotations_store.values.push_back(Get(step));
}
return annotations_store;
}
fbresult::ManeuverType WaypointTypeToFB(guidance::WaypointType type) const
{
switch (type)
{
case guidance::WaypointType::Arrive:
return fbresult::ManeuverType_Arrive;
case guidance::WaypointType::Depart:
return fbresult::ManeuverType_Depart;
default:
return fbresult::ManeuverType_Notification;
}
}
fbresult::ManeuverType TurnTypeToFB(osrm::guidance::TurnType::Enum turn) const
{
static std::map<osrm::guidance::TurnType::Enum, fbresult::ManeuverType> mappings = {
{osrm::guidance::TurnType::Invalid, fbresult::ManeuverType_Notification},
{osrm::guidance::TurnType::NewName, fbresult::ManeuverType_NewName},
{osrm::guidance::TurnType::Continue, fbresult::ManeuverType_Continue},
{osrm::guidance::TurnType::Turn, fbresult::ManeuverType_Turn},
{osrm::guidance::TurnType::Merge, fbresult::ManeuverType_Merge},
{osrm::guidance::TurnType::OnRamp, fbresult::ManeuverType_OnRamp},
{osrm::guidance::TurnType::OffRamp, fbresult::ManeuverType_OffRamp},
{osrm::guidance::TurnType::Fork, fbresult::ManeuverType_Fork},
{osrm::guidance::TurnType::EndOfRoad, fbresult::ManeuverType_EndOfRoad},
{osrm::guidance::TurnType::Notification, fbresult::ManeuverType_Notification},
{osrm::guidance::TurnType::EnterRoundabout, fbresult::ManeuverType_Roundabout},
{osrm::guidance::TurnType::EnterAndExitRoundabout,
fbresult::ManeuverType_ExitRoundabout},
{osrm::guidance::TurnType::EnterRotary, fbresult::ManeuverType_Rotary},
{osrm::guidance::TurnType::EnterAndExitRotary, fbresult::ManeuverType_ExitRotary},
{osrm::guidance::TurnType::EnterRoundaboutIntersection,
fbresult::ManeuverType_Roundabout},
{osrm::guidance::TurnType::EnterAndExitRoundaboutIntersection,
fbresult::ManeuverType_ExitRoundabout},
{osrm::guidance::TurnType::NoTurn, fbresult::ManeuverType_Notification},
{osrm::guidance::TurnType::Suppressed, fbresult::ManeuverType_Notification},
{osrm::guidance::TurnType::EnterRoundaboutAtExit, fbresult::ManeuverType_Roundabout},
{osrm::guidance::TurnType::ExitRoundabout, fbresult::ManeuverType_ExitRoundabout},
{osrm::guidance::TurnType::EnterRotaryAtExit, fbresult::ManeuverType_Rotary},
{osrm::guidance::TurnType::ExitRotary, fbresult::ManeuverType_ExitRotary},
{osrm::guidance::TurnType::EnterRoundaboutIntersectionAtExit,
fbresult::ManeuverType_Roundabout},
{osrm::guidance::TurnType::ExitRoundaboutIntersection,
fbresult::ManeuverType_ExitRoundabout},
{osrm::guidance::TurnType::StayOnRoundabout, fbresult::ManeuverType_RoundaboutTurn},
{osrm::guidance::TurnType::Sliproad, fbresult::ManeuverType_Notification},
{osrm::guidance::TurnType::MaxTurnType, fbresult::ManeuverType_Notification}};
return mappings[turn];
}
fbresult::Turn TurnModifierToFB(osrm::guidance::DirectionModifier::Enum modifier) const
{
static std::map<osrm::guidance::DirectionModifier::Enum, fbresult::Turn> mappings = {
{osrm::guidance::DirectionModifier::UTurn, fbresult::Turn_UTurn},
{osrm::guidance::DirectionModifier::SharpRight, fbresult::Turn_SharpRight},
{osrm::guidance::DirectionModifier::Right, fbresult::Turn_Right},
{osrm::guidance::DirectionModifier::SlightRight, fbresult::Turn_SlightRight},
{osrm::guidance::DirectionModifier::Straight, fbresult::Turn_Straight},
{osrm::guidance::DirectionModifier::SlightLeft, fbresult::Turn_SlightLeft},
{osrm::guidance::DirectionModifier::Left, fbresult::Turn_Left},
{osrm::guidance::DirectionModifier::SharpLeft, fbresult::Turn_SharpLeft},
};
return mappings[modifier];
}
std::vector<int8_t> TurnLaneTypeToFB(const extractor::TurnLaneType::Mask lane_type) const
{
const static fbresult::Turn mapping[] = {fbresult::Turn_None,
fbresult::Turn_Straight,
fbresult::Turn_SharpLeft,
fbresult::Turn_Left,
fbresult::Turn_SlightLeft,
fbresult::Turn_SlightRight,
fbresult::Turn_Right,
fbresult::Turn_SharpRight,
fbresult::Turn_UTurn,
fbresult::Turn_SlightLeft,
fbresult::Turn_SlightRight};
std::vector<int8_t> result;
std::bitset<8 * sizeof(extractor::TurnLaneType::Mask)> mask(lane_type);
for (auto index : util::irange<std::size_t>(0, extractor::TurnLaneType::NUM_TYPES))
{
if (mask[index])
{
result.push_back(mapping[index]);
}
}
return result;
}
flatbuffers::Offset<fbresult::RouteObject>
MakeRoute(flatbuffers::FlatBufferBuilder &fb_result,
const std::vector<PhantomEndpoints> &leg_endpoints,
const std::vector<std::vector<PathData>> &unpacked_path_segments,
const std::vector<bool> &source_traversed_in_reverse,
const std::vector<bool> &target_traversed_in_reverse) const
{
auto legs_info = MakeLegs(leg_endpoints,
unpacked_path_segments,
source_traversed_in_reverse,
target_traversed_in_reverse);
std::vector<guidance::RouteLeg> legs = legs_info.first;
std::vector<guidance::LegGeometry> leg_geometries = legs_info.second;
auto route = guidance::assembleRoute(legs);
// Fill legs
std::vector<flatbuffers::Offset<fbresult::Leg>> routeLegs;
routeLegs.reserve(legs.size());
for (const auto idx : util::irange<std::size_t>(0UL, legs.size()))
{
auto leg = legs[idx];
auto &leg_geometry = leg_geometries[idx];
// Fill steps
std::vector<flatbuffers::Offset<fbresult::Step>> legSteps;
if (!leg.steps.empty())
{
legSteps.resize(leg.steps.size());
std::transform(leg.steps.begin(),
leg.steps.end(),
legSteps.begin(),
[this, &fb_result, &leg_geometry](auto &step) {
return this->MakeFBStep(fb_result, leg_geometry, step);
});
}
auto steps_vector = fb_result.CreateVector(legSteps);
// Fill annotations
// To maintain support for uses of the old default constructors, we check
// if annotations property was set manually after default construction
auto requested_annotations = parameters.annotations_type;
if (parameters.annotations &&
(parameters.annotations_type == RouteParameters::AnnotationsType::None))
{
requested_annotations = RouteParameters::AnnotationsType::All;
}
flatbuffers::Offset<fbresult::Annotation> annotation_buffer;
if (requested_annotations != RouteParameters::AnnotationsType::None)
{
annotation_buffer =
MakeFBAnnotations(fb_result, leg_geometry, requested_annotations);
}
flatbuffers::Offset<flatbuffers::String> summary_string;
if (!leg.summary.empty())
{
summary_string = fb_result.CreateString(leg.summary);
}
fbresult::LegBuilder legBuilder(fb_result);
legBuilder.add_distance(leg.distance);
legBuilder.add_duration(leg.duration);
legBuilder.add_weight(leg.weight);
if (!leg.summary.empty())
{
legBuilder.add_summary(summary_string);
}
legBuilder.add_steps(steps_vector);
if (requested_annotations != RouteParameters::AnnotationsType::None)
{
legBuilder.add_annotations(annotation_buffer);
}
routeLegs.emplace_back(legBuilder.Finish());
}
auto legs_vector = fb_result.CreateVector(routeLegs);
// Fill geometry
auto overview = MakeOverview(leg_geometries);
mapbox::util::variant<flatbuffers::Offset<flatbuffers::String>,
flatbuffers::Offset<flatbuffers::Vector<const fbresult::Position *>>>
geometry;
if (overview)
{
geometry = MakeGeometry(fb_result, overview->begin(), overview->end());
}
auto weight_name_string = fb_result.CreateString(facade.GetWeightName());
fbresult::RouteObjectBuilder routeObject(fb_result);
routeObject.add_distance(route.distance);
routeObject.add_duration(route.duration);
routeObject.add_weight(route.weight);
routeObject.add_weight_name(weight_name_string);
routeObject.add_legs(legs_vector);
if (overview)
{
mapbox::util::apply_visitor(GeometryVisitor<fbresult::RouteObjectBuilder>(routeObject),
geometry);
}
return routeObject.Finish();
}
flatbuffers::Offset<fbresult::Annotation>
MakeFBAnnotations(flatbuffers::FlatBufferBuilder &fb_result,
guidance::LegGeometry &leg_geometry,
const RouteParameters::AnnotationsType &requested_annotations) const
{
// AnnotationsType uses bit flags, & operator checks if a property is set
flatbuffers::Offset<flatbuffers::Vector<float>> speed;
if (requested_annotations & RouteParameters::AnnotationsType::Speed)
{
double prev_speed = 0;
speed =
GetAnnotations<float>(fb_result,
leg_geometry,
[&prev_speed](const guidance::LegGeometry::Annotation &anno) {
if (anno.duration < std::numeric_limits<float>::min())
{
return prev_speed;
}
else
{
auto speed =
round(anno.distance / anno.duration * 10.) / 10.;
prev_speed = speed;
return util::json::clamp_float(speed);
}
});
}
flatbuffers::Offset<flatbuffers::Vector<uint32_t>> duration;
if (requested_annotations & RouteParameters::AnnotationsType::Duration)
{
duration = GetAnnotations<uint32_t>(
fb_result, leg_geometry, [](const guidance::LegGeometry::Annotation &anno) {
return anno.duration;
});
}
flatbuffers::Offset<flatbuffers::Vector<uint32_t>> distance;
if (requested_annotations & RouteParameters::AnnotationsType::Distance)
{
distance = GetAnnotations<uint32_t>(
fb_result, leg_geometry, [](const guidance::LegGeometry::Annotation &anno) {
return anno.distance;
});
}
flatbuffers::Offset<flatbuffers::Vector<uint32_t>> weight;
if (requested_annotations & RouteParameters::AnnotationsType::Weight)
{
weight = GetAnnotations<uint32_t>(
fb_result, leg_geometry, [](const guidance::LegGeometry::Annotation &anno) {
return anno.weight;
});
}
flatbuffers::Offset<flatbuffers::Vector<uint32_t>> datasources;
if (requested_annotations & RouteParameters::AnnotationsType::Datasources)
{
datasources = GetAnnotations<uint32_t>(
fb_result, leg_geometry, [](const guidance::LegGeometry::Annotation &anno) {
return anno.datasource;
});
}
std::vector<uint32_t> nodes;
if (requested_annotations & RouteParameters::AnnotationsType::Nodes)
{
nodes.reserve(leg_geometry.node_ids.size());
for (const auto node_id : leg_geometry.node_ids)
{
nodes.emplace_back(static_cast<uint64_t>(facade.GetOSMNodeIDOfNode(node_id)));
}
}
auto nodes_vector = fb_result.CreateVector(nodes);
// Add any supporting metadata, if needed
bool use_metadata = requested_annotations & RouteParameters::AnnotationsType::Datasources;
flatbuffers::Offset<fbresult::Metadata> metadata_buffer;
if (use_metadata)
{
const auto MAX_DATASOURCE_ID = 255u;
std::vector<flatbuffers::Offset<flatbuffers::String>> names;
for (auto i = 0u; i < MAX_DATASOURCE_ID; i++)
{
const auto name = facade.GetDatasourceName(i);
// Length of 0 indicates the first empty name, so we can stop here
if (name.empty())
break;
names.emplace_back(
fb_result.CreateString(std::string(facade.GetDatasourceName(i))));
}
metadata_buffer = fbresult::CreateMetadataDirect(fb_result, &names);
}
fbresult::AnnotationBuilder annotation(fb_result);
annotation.add_speed(speed);
annotation.add_duration(duration);
annotation.add_distance(distance);
annotation.add_weight(weight);
annotation.add_datasources(datasources);
annotation.add_nodes(nodes_vector);
if (use_metadata)
{
annotation.add_metadata(metadata_buffer);
}
return annotation.Finish();
}
template <typename Builder> class GeometryVisitor
{
public:
GeometryVisitor(Builder &builder) : builder(builder) {}
void operator()(const flatbuffers::Offset<flatbuffers::String> &value)
{
builder.add_polyline(value);
}
void operator()(
const flatbuffers::Offset<flatbuffers::Vector<const fbresult::Position *>> &value)
{
builder.add_coordinates(value);
}
private:
Builder &builder;
};
flatbuffers::Offset<fbresult::Step> MakeFBStep(flatbuffers::FlatBufferBuilder &builder,
const guidance::LegGeometry &leg_geometry,
const guidance::RouteStep &step) const
{
auto name_string = builder.CreateString(step.name);
flatbuffers::Offset<flatbuffers::String> ref_string;
if (!step.ref.empty())
{
ref_string = builder.CreateString(step.ref);
}
flatbuffers::Offset<flatbuffers::String> pronunciation_string;
if (!step.pronunciation.empty())
{
pronunciation_string = builder.CreateString(step.pronunciation);
}
flatbuffers::Offset<flatbuffers::String> destinations_string;
if (!step.destinations.empty())
{
destinations_string = builder.CreateString(step.destinations);
}
flatbuffers::Offset<flatbuffers::String> exists_string;
if (!step.exits.empty())
{
exists_string = builder.CreateString(step.exits);
}
flatbuffers::Offset<flatbuffers::String> rotary_name_string;
flatbuffers::Offset<flatbuffers::String> rotary_pronunciation_string;
if (!step.rotary_name.empty())
{
rotary_name_string = builder.CreateString(step.rotary_name);
if (!step.rotary_pronunciation.empty())
{
rotary_pronunciation_string = builder.CreateString(step.rotary_pronunciation);
}
}
auto mode_string = builder.CreateString(extractor::travelModeToString(step.mode));
// Geometry
auto geometry = MakeGeometry(builder,
leg_geometry.locations.begin() + step.geometry_begin,
leg_geometry.locations.begin() + step.geometry_end);
// Maneuver
fbresult::StepManeuverBuilder maneuver(builder);
fbresult::Position maneuverPosition{
static_cast<float>(util::toFloating(step.maneuver.location.lon).__value),
static_cast<float>(util::toFloating(step.maneuver.location.lat).__value)};
maneuver.add_location(&maneuverPosition);
maneuver.add_bearing_before(step.maneuver.bearing_before);
maneuver.add_bearing_after(step.maneuver.bearing_after);
if (step.maneuver.waypoint_type == guidance::WaypointType::None)
maneuver.add_type(TurnTypeToFB(step.maneuver.instruction.type));
else
maneuver.add_type(WaypointTypeToFB(step.maneuver.waypoint_type));
if (osrm::engine::api::json::detail::isValidModifier(step.maneuver))
{
maneuver.add_modifier(TurnModifierToFB(step.maneuver.instruction.direction_modifier));
}
if (step.maneuver.exit != 0)
{
maneuver.add_exit(step.maneuver.exit);
}
auto maneuver_buffer = maneuver.Finish();
// intersections
auto intersections_vector = MakeFBIntersections(builder, step);
fbresult::StepBuilder stepBuilder(builder);
stepBuilder.add_duration(step.duration);
stepBuilder.add_distance(step.distance);
stepBuilder.add_weight(step.weight);
stepBuilder.add_name(name_string);
stepBuilder.add_mode(mode_string);
stepBuilder.add_driving_side(step.is_left_hand_driving);
stepBuilder.add_ref(ref_string);
stepBuilder.add_pronunciation(pronunciation_string);
stepBuilder.add_destinations(destinations_string);
stepBuilder.add_exits(exists_string);
stepBuilder.add_rotary_name(rotary_name_string);
stepBuilder.add_rotary_pronunciation(rotary_pronunciation_string);
stepBuilder.add_intersections(intersections_vector);
stepBuilder.add_maneuver(maneuver_buffer);
mapbox::util::apply_visitor(GeometryVisitor<fbresult::StepBuilder>(stepBuilder), geometry);
return stepBuilder.Finish();
};
flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<fbresult::Intersection>>>
MakeFBIntersections(flatbuffers::FlatBufferBuilder &fb_result,
const guidance::RouteStep &step) const
{
std::vector<flatbuffers::Offset<fbresult::Intersection>> intersections;
intersections.resize(step.intersections.size());
std::transform(
step.intersections.begin(),
step.intersections.end(),
intersections.begin(),
[&fb_result, this](const guidance::IntermediateIntersection &intersection) {
std::vector<flatbuffers::Offset<fbresult::Lane>> lanes;
if (json::detail::hasValidLanes(intersection))
{
BOOST_ASSERT(intersection.lanes.lanes_in_turn >= 1);
lanes.reserve(intersection.lane_description.size());
LaneID lane_id = intersection.lane_description.size();
for (const auto &lane_desc : intersection.lane_description)
{
--lane_id;
auto indications = TurnLaneTypeToFB(lane_desc);
auto lane_valid = lane_id >= intersection.lanes.first_lane_from_the_right &&
lane_id < intersection.lanes.first_lane_from_the_right +
intersection.lanes.lanes_in_turn;
lanes.push_back(
fbresult::CreateLaneDirect(fb_result, &indications, lane_valid));
}
}
auto lanes_vector = fb_result.CreateVector(lanes);
fbresult::Position maneuverPosition{
static_cast<float>(util::toFloating(intersection.location.lon).__value),
static_cast<float>(util::toFloating(intersection.location.lat).__value)};
auto bearings_vector = fb_result.CreateVector(intersection.bearings);
std::vector<flatbuffers::Offset<flatbuffers::String>> classes;
classes.resize(intersection.classes.size());
std::transform(
intersection.classes.begin(),
intersection.classes.end(),
classes.begin(),
[&fb_result](const std::string &cls) { return fb_result.CreateString(cls); });
auto classes_vector = fb_result.CreateVector(classes);
auto entry_vector = fb_result.CreateVector(intersection.entry);
fbresult::IntersectionBuilder intersectionBuilder(fb_result);
intersectionBuilder.add_location(&maneuverPosition);
intersectionBuilder.add_bearings(bearings_vector);
intersectionBuilder.add_classes(classes_vector);
intersectionBuilder.add_entry(entry_vector);
intersectionBuilder.add_in_bearing(intersection.in);
intersectionBuilder.add_out_bearing(intersection.out);
intersectionBuilder.add_lanes(lanes_vector);
return intersectionBuilder.Finish();
});
return fb_result.CreateVector(intersections);
}
util::json::Object MakeRoute(const std::vector<PhantomEndpoints> &leg_endpoints,
const std::vector<std::vector<PathData>> &unpacked_path_segments,
const std::vector<bool> &source_traversed_in_reverse,
const std::vector<bool> &target_traversed_in_reverse) const
{
auto legs_info = MakeLegs(leg_endpoints,
unpacked_path_segments,
source_traversed_in_reverse,
target_traversed_in_reverse);
std::vector<guidance::RouteLeg> legs = legs_info.first;
std::vector<guidance::LegGeometry> leg_geometries = legs_info.second;
auto route = guidance::assembleRoute(legs);
boost::optional<util::json::Value> json_overview =
MakeGeometry(MakeOverview(leg_geometries));
std::vector<util::json::Value> step_geometries;
const auto total_step_count =
std::accumulate(legs.begin(), legs.end(), 0, [](const auto &v, const auto &leg) {
return v + leg.steps.size();
});
step_geometries.reserve(total_step_count);
for (const auto idx : util::irange<std::size_t>(0UL, legs.size()))
{
auto &leg_geometry = leg_geometries[idx];
std::transform(
legs[idx].steps.begin(),
legs[idx].steps.end(),
std::back_inserter(step_geometries),
[this, &leg_geometry](const guidance::RouteStep &step) {
if (parameters.geometries == RouteParameters::GeometriesType::Polyline)
{
return static_cast<util::json::Value>(json::makePolyline<100000>(
leg_geometry.locations.begin() + step.geometry_begin,
leg_geometry.locations.begin() + step.geometry_end));
}
if (parameters.geometries == RouteParameters::GeometriesType::Polyline6)
{
return static_cast<util::json::Value>(json::makePolyline<1000000>(
leg_geometry.locations.begin() + step.geometry_begin,
leg_geometry.locations.begin() + step.geometry_end));
}
BOOST_ASSERT(parameters.geometries == RouteParameters::GeometriesType::GeoJSON);
return static_cast<util::json::Value>(json::makeGeoJSONGeometry(
leg_geometry.locations.begin() + step.geometry_begin,
leg_geometry.locations.begin() + step.geometry_end));
});
}
std::vector<util::json::Object> annotations;
// To maintain support for uses of the old default constructors, we check
// if annotations property was set manually after default construction
auto requested_annotations = parameters.annotations_type;
if (parameters.annotations &&
(parameters.annotations_type == RouteParameters::AnnotationsType::None))
{
requested_annotations = RouteParameters::AnnotationsType::All;
}
if (requested_annotations != RouteParameters::AnnotationsType::None)
{
for (const auto idx : util::irange<std::size_t>(0UL, leg_geometries.size()))
{
auto &leg_geometry = leg_geometries[idx];
util::json::Object annotation;
// AnnotationsType uses bit flags, & operator checks if a property is set
if (requested_annotations & RouteParameters::AnnotationsType::Speed)
{
double prev_speed = 0;
annotation.values["speed"] = GetAnnotations(
leg_geometry, [&prev_speed](const guidance::LegGeometry::Annotation &anno) {
if (anno.duration < std::numeric_limits<double>::min())
{
return prev_speed;
}
else
{
auto speed = std::round(anno.distance / anno.duration * 10.) / 10.;
prev_speed = speed;
return util::json::clamp_float(speed);
}
});
}
if (requested_annotations & RouteParameters::AnnotationsType::Duration)
{
annotation.values["duration"] = GetAnnotations(
leg_geometry, [](const guidance::LegGeometry::Annotation &anno) {
return anno.duration;
});
}
if (requested_annotations & RouteParameters::AnnotationsType::Distance)
{
annotation.values["distance"] = GetAnnotations(
leg_geometry, [](const guidance::LegGeometry::Annotation &anno) {
return anno.distance;
});
}
if (requested_annotations & RouteParameters::AnnotationsType::Weight)
{
annotation.values["weight"] = GetAnnotations(
leg_geometry,
[](const guidance::LegGeometry::Annotation &anno) { return anno.weight; });
}
if (requested_annotations & RouteParameters::AnnotationsType::Datasources)
{
annotation.values["datasources"] = GetAnnotations(
leg_geometry, [](const guidance::LegGeometry::Annotation &anno) {
return anno.datasource;
});
}
if (requested_annotations & RouteParameters::AnnotationsType::Nodes)
{
util::json::Array nodes;
nodes.values.reserve(leg_geometry.node_ids.size());
for (const auto node_id : leg_geometry.node_ids)
{
nodes.values.push_back(
static_cast<std::uint64_t>(facade.GetOSMNodeIDOfNode(node_id)));
}
annotation.values["nodes"] = std::move(nodes);
}
// Add any supporting metadata, if needed
if (requested_annotations & RouteParameters::AnnotationsType::Datasources)
{
const auto MAX_DATASOURCE_ID = 255u;
util::json::Object metadata;
util::json::Array datasource_names;
for (auto i = 0u; i < MAX_DATASOURCE_ID; i++)
{
const auto name = facade.GetDatasourceName(i);
// Length of 0 indicates the first empty name, so we can stop here
if (name.empty())
break;
datasource_names.values.push_back(std::string(facade.GetDatasourceName(i)));
}
metadata.values["datasource_names"] = datasource_names;
annotation.values["metadata"] = metadata;
}
annotations.push_back(std::move(annotation));
}
}
auto result = json::makeRoute(route,
json::makeRouteLegs(std::move(legs),
std::move(step_geometries),
std::move(annotations)),
std::move(json_overview),
facade.GetWeightName());
return result;
}
const RouteParameters ¶meters;
std::pair<std::vector<guidance::RouteLeg>, std::vector<guidance::LegGeometry>>
MakeLegs(const std::vector<PhantomEndpoints> &leg_endpoints,
const std::vector<std::vector<PathData>> &unpacked_path_segments,
const std::vector<bool> &source_traversed_in_reverse,
const std::vector<bool> &target_traversed_in_reverse) const
{
auto result =
std::make_pair(std::vector<guidance::RouteLeg>(), std::vector<guidance::LegGeometry>());
auto &legs = result.first;
auto &leg_geometries = result.second;
auto number_of_legs = leg_endpoints.size();
legs.reserve(number_of_legs);
leg_geometries.reserve(number_of_legs);
for (auto idx : util::irange<std::size_t>(0UL, number_of_legs))
{
const auto &phantoms = leg_endpoints[idx];
const auto &path_data = unpacked_path_segments[idx];
const bool reversed_source = source_traversed_in_reverse[idx];
const bool reversed_target = target_traversed_in_reverse[idx];
auto leg = guidance::assembleLeg(facade,
path_data,
phantoms.source_phantom,
phantoms.target_phantom,
reversed_target);
guidance::LegGeometry leg_geometry;
// Generate additional geometry data if request includes turn-by-turn steps,
// overview geometry or route geometry annotations.
// Note that overview geometry and route geometry annotations can return different
// results depending on whether turn-by-turn steps are also requested.
if (parameters.steps || parameters.annotations ||
parameters.overview != RouteParameters::OverviewType::False)
{
leg_geometry = guidance::assembleGeometry(BaseAPI::facade,
path_data,
phantoms.source_phantom,
phantoms.target_phantom,
reversed_source,
reversed_target);
util::Log(logDEBUG) << "Assembling steps " << std::endl;
if (parameters.steps)
{
leg.summary = guidance::assembleSummary(
facade, path_data, phantoms.target_phantom, reversed_target);
auto steps = guidance::assembleSteps(BaseAPI::facade,
path_data,
leg_geometry,
phantoms.source_phantom,
phantoms.target_phantom,
reversed_source,
reversed_target);
// Apply maneuver overrides before any other post
// processing is performed
guidance::applyOverrides(BaseAPI::facade, steps, leg_geometry);
// Collapse segregated steps before others
steps = guidance::collapseSegregatedTurnInstructions(std::move(steps));
/* Perform step-based post-processing.
*
* Using post-processing on basis of route-steps for a single leg at a time
* comes at the cost that we cannot count the correct exit for roundabouts.
* We can only emit the exit nr/intersections up to/starting at a part of the
*leg. If a roundabout is not terminated in a leg, we will end up with a
*enter-roundabout
* and exit-roundabout-nr where the exit nr is out of sync with the previous
*enter.
*
* | S |
* * *
* ----* * ----
* T
* ----* * ----
* V * *
* | |
* | |
*
* Coming from S via V to T, we end up with the legs S->V and V->T. V-T will say
*to take the second exit, even though counting from S it would be the third.
* For S, we only emit `roundabout` without an exit number, showing that we
*enter a roundabout to find a via point. The same exit will be emitted, though,
*if we should start routing at S, making the overall response consistent.
*
* ⚠ CAUTION: order of post-processing steps is important
* - handleRoundabouts must be called before collapseTurnInstructions that
* expects post-processed roundabouts
*/
guidance::trimShortSegments(steps, leg_geometry);
leg.steps = guidance::handleRoundabouts(std::move(steps));
leg.steps = guidance::collapseTurnInstructions(std::move(leg.steps));
leg.steps = guidance::anticipateLaneChange(std::move(leg.steps));
leg.steps = guidance::buildIntersections(std::move(leg.steps));
leg.steps = guidance::suppressShortNameSegments(std::move(leg.steps));
leg.steps = guidance::assignRelativeLocations(std::move(leg.steps),
leg_geometry,
phantoms.source_phantom,
phantoms.target_phantom);
leg_geometry = guidance::resyncGeometry(std::move(leg_geometry), leg.steps);
}
}
leg_geometries.push_back(std::move(leg_geometry));
legs.push_back(std::move(leg));
}
return result;
}
boost::optional<std::vector<Coordinate>>
MakeOverview(const std::vector<guidance::LegGeometry> &leg_geometries) const
{
boost::optional<std::vector<Coordinate>> overview;
if (parameters.overview != RouteParameters::OverviewType::False)
{
const auto use_simplification =
parameters.overview == RouteParameters::OverviewType::Simplified;
BOOST_ASSERT(use_simplification ||
parameters.overview == RouteParameters::OverviewType::Full);
overview = guidance::assembleOverview(leg_geometries, use_simplification);
}
return overview;