inline RouteLeg assembleLeg(const datafacade::BaseDataFacade &facade,
const std::vector<PathData> &route_data,
const LegGeometry &leg_geometry,
const PhantomNode &source_node,
const PhantomNode &target_node,
const bool target_traversed_in_reverse,
const bool needs_summary)
{
const auto target_duration =
(target_traversed_in_reverse ? target_node.reverse_weight : target_node.forward_weight) /
10.;
auto distance = std::accumulate(
leg_geometry.segment_distances.begin(), leg_geometry.segment_distances.end(), 0.);
auto duration = std::accumulate(route_data.begin(),
route_data.end(),
0.,
[](const double sum, const PathData &data) {
return sum + data.duration_until_turn;
}) /
10.;
// s
// |
// Given a route a---b---c where there is a right turn at c.
// |
// d
// |--t
// e
// (a, b, c) gets compressed to (a,c)
// (c, d, e) gets compressed to (c,e)
// The duration of the turn (a,c) -> (c,e) will be the duration of (a,c) (e.g. the duration
// of (a,b,c)).
// The phantom node of s will contain:
// `forward_weight`: duration of (a,s)
// `forward_offset`: 0 (its the first segment)
// The phantom node of t will contain:
// `forward_weight`: duration of (d,t)
// `forward_offset`: duration of (c, d)
// path_data will have entries for (s,b), (b, c), (c, d) but (d, t) is only
// caputed by the phantom node. So we need to add the target duration here.
// On local segments, the target duration is already part of the duration, however.
duration = duration + target_duration;
if (route_data.empty())
{
duration -= (target_traversed_in_reverse ? source_node.reverse_weight
: source_node.forward_weight) /
10.0;
}
std::string summary;
if (needs_summary)
{
auto summary_array = detail::summarizeRoute<detail::MAX_USED_SEGMENTS>(
route_data, target_node, target_traversed_in_reverse);
BOOST_ASSERT(detail::MAX_USED_SEGMENTS > 0);
BOOST_ASSERT(summary_array.begin() != summary_array.end());
// transform a name_id into a string containing either the name, or -if the name is empty-
// the reference.
const auto name_id_to_string = [&](const NameID name_id) {
const auto name = facade.GetNameForID(name_id);
if (!name.empty())
return name;
else
{
const auto ref = facade.GetRefForID(name_id);
return ref;
}
};
const auto not_empty = [&](const std::string &name) { return !name.empty(); };
const auto summary_names = summary_array | boost::adaptors::transformed(name_id_to_string) |
boost::adaptors::filtered(not_empty);
summary = boost::algorithm::join(summary_names, ", ");
}
return RouteLeg{duration, distance, summary, {}};
}
inline std::vector<RouteStep> assembleSteps(const datafacade::BaseDataFacade &facade,
const std::vector<PathData> &leg_data,
const LegGeometry &leg_geometry,
const PhantomNode &source_node,
const PhantomNode &target_node,
const bool source_traversed_in_reverse,
const bool target_traversed_in_reverse)
{
const double constexpr ZERO_DURATION = 0., ZERO_DISTANCE = 0.;
const constexpr char *NO_ROTARY_NAME = "";
const EdgeWeight source_duration =
source_traversed_in_reverse ? source_node.reverse_weight : source_node.forward_weight;
const auto source_mode = source_traversed_in_reverse ? source_node.backward_travel_mode
: source_node.forward_travel_mode;
const EdgeWeight target_duration =
target_traversed_in_reverse ? target_node.reverse_weight : target_node.forward_weight;
const auto target_mode = target_traversed_in_reverse ? target_node.backward_travel_mode
: target_node.forward_travel_mode;
const auto number_of_segments = leg_geometry.GetNumberOfSegments();
std::vector<RouteStep> steps;
steps.reserve(number_of_segments);
std::size_t segment_index = 0;
BOOST_ASSERT(leg_geometry.locations.size() >= 2);
auto bearings = detail::getDepartBearings(leg_geometry);
StepManeuver maneuver{source_node.location,
bearings.first,
bearings.second,
extractor::guidance::TurnInstruction::NO_TURN(),
WaypointType::Depart,
0};
Intersection intersection{source_node.location,
std::vector<short>({bearings.second}),
std::vector<bool>({true}),
Intersection::NO_INDEX,
0,
util::guidance::LaneTuple(),
{}};
if (leg_data.size() > 0)
{
// PathData saves the information we need of the segment _before_ the turn,
// but a RouteStep is with regard to the segment after the turn.
// We need to skip the first segment because it is already covered by the
// initial start of a route
int segment_duration = 0;
// some name changes are not announced in our processing. For these, we have to keep the
// first name on the segment
auto step_name_id = source_node.name_id;
for (std::size_t leg_data_index = 0; leg_data_index < leg_data.size(); ++leg_data_index)
{
const auto &path_point = leg_data[leg_data_index];
segment_duration += path_point.duration_until_turn;
// all changes to this check have to be matched with assemble_geometry
if (path_point.turn_instruction.type != extractor::guidance::TurnType::NoTurn)
{
BOOST_ASSERT(segment_duration >= 0);
const auto name = facade.GetNameForID(step_name_id);
const auto ref = facade.GetRefForID(step_name_id);
const auto pronunciation = facade.GetPronunciationForID(step_name_id);
const auto destinations = facade.GetDestinationsForID(step_name_id);
const auto distance = leg_geometry.segment_distances[segment_index];
steps.push_back(RouteStep{step_name_id,
std::move(name),
std::move(ref),
std::move(pronunciation),
std::move(destinations),
NO_ROTARY_NAME,
NO_ROTARY_NAME,
segment_duration / 10.0,
distance,
path_point.travel_mode,
maneuver,
leg_geometry.FrontIndex(segment_index),
leg_geometry.BackIndex(segment_index) + 1,
{intersection}});
if (leg_data_index + 1 < leg_data.size())
{
step_name_id = leg_data[leg_data_index + 1].name_id;
}
else
{
step_name_id = target_node.name_id;
}
// extract bearings
bearings = std::make_pair<std::uint16_t, std::uint16_t>(
path_point.pre_turn_bearing.Get(), path_point.post_turn_bearing.Get());
const auto entry_class = facade.GetEntryClass(path_point.entry_classid);
const auto bearing_class =
facade.GetBearingClass(facade.GetBearingClassID(path_point.turn_via_node));
auto bearing_data = bearing_class.getAvailableBearings();
intersection.in = bearing_class.findMatchingBearing(bearings.first);
intersection.out = bearing_class.findMatchingBearing(bearings.second);
intersection.location = facade.GetCoordinateOfNode(path_point.turn_via_node);
intersection.bearings.clear();
intersection.bearings.reserve(bearing_class.getAvailableBearings().size());
intersection.lanes = path_point.lane_data.first;
intersection.lane_description =
path_point.lane_data.second != INVALID_LANE_DESCRIPTIONID
? facade.GetTurnDescription(path_point.lane_data.second)
: extractor::guidance::TurnLaneDescription();
std::copy(bearing_class.getAvailableBearings().begin(),
bearing_class.getAvailableBearings().end(),
std::back_inserter(intersection.bearings));
intersection.entry.clear();
for (auto idx : util::irange<std::size_t>(0, intersection.bearings.size()))
{
intersection.entry.push_back(entry_class.allowsEntry(idx));
}
std::int16_t bearing_in_driving_direction =
util::bearing::reverseBearing(std::round(bearings.first));
maneuver = {intersection.location,
bearing_in_driving_direction,
bearings.second,
path_point.turn_instruction,
WaypointType::None,
0};
segment_index++;
segment_duration = 0;
}
}
const auto distance = leg_geometry.segment_distances[segment_index];
const int duration = segment_duration + target_duration;
BOOST_ASSERT(duration >= 0);
steps.push_back(RouteStep{step_name_id,
facade.GetNameForID(step_name_id),
facade.GetRefForID(step_name_id),
facade.GetPronunciationForID(step_name_id),
facade.GetDestinationsForID(step_name_id),
NO_ROTARY_NAME,
NO_ROTARY_NAME,
duration / 10.,
distance,
target_mode,
maneuver,
leg_geometry.FrontIndex(segment_index),
leg_geometry.BackIndex(segment_index) + 1,
{intersection}});
}
// In this case the source + target are on the same edge segment
else
{
BOOST_ASSERT(source_node.fwd_segment_position == target_node.fwd_segment_position);
// s t
// u-------------v
// |---| source_duration
// |---------| target_duration
int duration = target_duration - source_duration;
BOOST_ASSERT(duration >= 0);
steps.push_back(RouteStep{source_node.name_id,
facade.GetNameForID(source_node.name_id),
facade.GetRefForID(source_node.name_id),
facade.GetPronunciationForID(source_node.name_id),
facade.GetDestinationsForID(source_node.name_id),
NO_ROTARY_NAME,
NO_ROTARY_NAME,
duration / 10.,
leg_geometry.segment_distances[segment_index],
source_mode,
std::move(maneuver),
leg_geometry.FrontIndex(segment_index),
leg_geometry.BackIndex(segment_index) + 1,
{intersection}});
}
BOOST_ASSERT(segment_index == number_of_segments - 1);
bearings = detail::getArriveBearings(leg_geometry);
intersection = {
target_node.location,
std::vector<short>({static_cast<short>(util::bearing::reverseBearing(bearings.first))}),
std::vector<bool>({true}),
0,
Intersection::NO_INDEX,
util::guidance::LaneTuple(),
{}};
// This step has length zero, the only reason we need it is the target location
maneuver = {intersection.location,
bearings.first,
bearings.second,
extractor::guidance::TurnInstruction::NO_TURN(),
WaypointType::Arrive,
0};
BOOST_ASSERT(!leg_geometry.locations.empty());
steps.push_back(RouteStep{target_node.name_id,
facade.GetNameForID(target_node.name_id),
facade.GetRefForID(target_node.name_id),
facade.GetPronunciationForID(target_node.name_id),
facade.GetDestinationsForID(target_node.name_id),
NO_ROTARY_NAME,
NO_ROTARY_NAME,
ZERO_DURATION,
ZERO_DISTANCE,
target_mode,
std::move(maneuver),
leg_geometry.locations.size() - 1,
leg_geometry.locations.size(),
{intersection}});
BOOST_ASSERT(steps.front().intersections.size() == 1);
BOOST_ASSERT(steps.front().intersections.front().bearings.size() == 1);
BOOST_ASSERT(steps.front().intersections.front().entry.size() == 1);
BOOST_ASSERT(steps.front().maneuver.waypoint_type == WaypointType::Depart);
BOOST_ASSERT(steps.back().intersections.size() == 1);
BOOST_ASSERT(steps.back().intersections.front().bearings.size() == 1);
BOOST_ASSERT(steps.back().intersections.front().entry.size() == 1);
BOOST_ASSERT(steps.back().maneuver.waypoint_type == WaypointType::Arrive);
BOOST_ASSERT(steps.back().intersections.front().lanes.lanes_in_turn == 0);
BOOST_ASSERT(steps.back().intersections.front().lanes.first_lane_from_the_right ==
INVALID_LANEID);
BOOST_ASSERT(steps.back().intersections.front().lane_description.empty());
return steps;
}