#ifndef ENGINE_API_ROUTE_HPP
#define ENGINE_API_ROUTE_HPP
#include "engine/api/base_api.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/lane_processing.hpp"
#include "engine/guidance/post_processing.hpp"
#include "engine/internal_route_result.hpp"
#include "util/coordinate.hpp"
#include "util/integer_range.hpp"
#include <iterator>
#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 InternalRouteResult &raw_route, util::json::Object &response) const
{
auto number_of_routes = raw_route.has_alternative() ? 2UL : 1UL;
util::json::Array routes;
routes.values.resize(number_of_routes);
routes.values[0] = MakeRoute(raw_route.segment_end_coordinates,
raw_route.unpacked_path_segments,
raw_route.source_traversed_in_reverse,
raw_route.target_traversed_in_reverse);
if (raw_route.has_alternative())
{
std::vector<std::vector<PathData>> wrapped_leg(1);
wrapped_leg.front() = std::move(raw_route.unpacked_alternative);
routes.values[1] = MakeRoute(raw_route.segment_end_coordinates,
wrapped_leg,
raw_route.alt_source_traversed_in_reverse,
raw_route.alt_target_traversed_in_reverse);
}
response.values["waypoints"] = BaseAPI::MakeWaypoints(raw_route.segment_end_coordinates);
response.values["routes"] = std::move(routes);
response.values["code"] = "Ok";
}
// FIXME gcc 4.8 doesn't support for lambdas to call protected member functions
// protected:
template <typename ForwardIter>
util::json::Value MakeGeometry(ForwardIter begin, ForwardIter end) const
{
if (parameters.geometries == RouteParameters::GeometriesType::Polyline)
{
return json::makePolyline<100000>(begin, end);
}
if (parameters.geometries == RouteParameters::GeometriesType::Polyline6)
{
return json::makePolyline<1000000>(begin, end);
}
BOOST_ASSERT(parameters.geometries == RouteParameters::GeometriesType::GeoJSON);
return json::makeGeoJSONGeometry(begin, end);
}
util::json::Object MakeRoute(const std::vector<PhantomNodes> &segment_end_coordinates,
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
{
std::vector<guidance::RouteLeg> legs;
std::vector<guidance::LegGeometry> leg_geometries;
auto number_of_legs = segment_end_coordinates.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 = segment_end_coordinates[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_geometry = guidance::assembleGeometry(BaseAPI::facade,
path_data,
phantoms.source_phantom,
phantoms.target_phantom,
reversed_source,
reversed_target);
auto leg = guidance::assembleLeg(facade,
path_data,
leg_geometry,
phantoms.source_phantom,
phantoms.target_phantom,
reversed_target,
parameters.steps);
if (parameters.steps)
{
auto steps = guidance::assembleSteps(BaseAPI::facade,
path_data,
leg_geometry,
phantoms.source_phantom,
phantoms.target_phantom,
reversed_source,
reversed_target);
/* 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.
*/
guidance::trimShortSegments(steps, leg_geometry);
leg.steps = guidance::postProcess(std::move(steps));
leg.steps = guidance::collapseTurns(std::move(leg.steps));
leg.steps = guidance::buildIntersections(std::move(leg.steps));
leg.steps = guidance::assignRelativeLocations(std::move(leg.steps),
leg_geometry,
phantoms.source_phantom,
phantoms.target_phantom);
leg.steps = guidance::removeLanesFromRoundabouts(std::move(leg.steps));
leg.steps = guidance::anticipateLaneChange(std::move(leg.steps));
leg.steps = guidance::collapseUseLane(std::move(leg.steps));
leg_geometry = guidance::resyncGeometry(std::move(leg_geometry), leg.steps);
}
leg_geometries.push_back(std::move(leg_geometry));
legs.push_back(std::move(leg));
}
auto route = guidance::assembleRoute(legs);
boost::optional<util::json::Value> json_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);
auto overview = guidance::assembleOverview(leg_geometries, use_simplification);
json_overview = MakeGeometry(overview.begin(), overview.end());
}
std::vector<util::json::Value> step_geometries;
for (const auto idx : util::irange<std::size_t>(0UL, legs.size()))
{
auto &leg_geometry = leg_geometries[idx];
step_geometries.reserve(step_geometries.size() + legs[idx].steps.size());
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;
if (parameters.annotations)
{
for (const auto idx : util::irange<std::size_t>(0UL, leg_geometries.size()))
{
util::json::Array durations;
util::json::Array distances;
util::json::Array nodes;
util::json::Array datasources;
auto &leg_geometry = leg_geometries[idx];
durations.values.reserve(leg_geometry.annotations.size());
distances.values.reserve(leg_geometry.annotations.size());
nodes.values.reserve(leg_geometry.osm_node_ids.size());
datasources.values.reserve(leg_geometry.annotations.size());
std::for_each(leg_geometry.annotations.begin(),
leg_geometry.annotations.end(),
[this, &durations, &distances, &datasources](
const guidance::LegGeometry::Annotation &step) {
durations.values.push_back(step.duration);
distances.values.push_back(step.distance);
datasources.values.push_back(step.datasource);
});
std::for_each(leg_geometry.osm_node_ids.begin(),
leg_geometry.osm_node_ids.end(),
[this, &nodes](const OSMNodeID &node_id) {
nodes.values.push_back(static_cast<std::uint64_t>(node_id));
});
util::json::Object annotation;
annotation.values["distance"] = std::move(distances);
annotation.values["duration"] = std::move(durations);
annotation.values["nodes"] = std::move(nodes);
annotation.values["datasources"] = std::move(datasources);
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));
return result;
}
const RouteParameters ¶meters;
};
} // ns api
} // ns engine
} // ns osrm
#endif