153 lines
7.2 KiB
C++
153 lines
7.2 KiB
C++
#ifndef ENGINE_GUIDANCE_ASSEMBLE_STEPS_HPP_
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#define ENGINE_GUIDANCE_ASSEMBLE_STEPS_HPP_
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#include "engine/guidance/route_step.hpp"
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#include "engine/guidance/step_maneuver.hpp"
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#include "engine/guidance/leg_geometry.hpp"
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#include "engine/guidance/toolkit.hpp"
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#include "extractor/guidance/turn_instruction.hpp"
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#include "engine/internal_route_result.hpp"
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#include "engine/phantom_node.hpp"
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#include "util/coordinate_calculation.hpp"
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#include "util/coordinate.hpp"
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#include "util/bearing.hpp"
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#include "extractor/travel_mode.hpp"
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#include <vector>
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#include <boost/optional.hpp>
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namespace osrm
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{
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namespace engine
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{
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namespace guidance
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{
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namespace detail
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{
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StepManeuver stepManeuverFromGeometry(extractor::guidance::TurnInstruction instruction,
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const WaypointType waypoint_type,
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const LegGeometry &leg_geometry,
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const std::size_t segment_index,
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const unsigned exit);
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} // ns detail
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template <typename DataFacadeT>
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std::vector<RouteStep> assembleSteps(const DataFacadeT &facade,
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const std::vector<PathData> &leg_data,
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const LegGeometry &leg_geometry,
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const PhantomNode &source_node,
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const PhantomNode &target_node,
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const bool source_traversed_in_reverse,
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const bool target_traversed_in_reverse)
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{
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const EdgeWeight source_duration =
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source_traversed_in_reverse ? source_node.reverse_weight : source_node.forward_weight;
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const auto source_mode = source_traversed_in_reverse ? source_node.backward_travel_mode
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: source_node.forward_travel_mode;
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const EdgeWeight target_duration =
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target_traversed_in_reverse ? target_node.reverse_weight : target_node.forward_weight;
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const auto target_mode = target_traversed_in_reverse ? target_node.backward_travel_mode
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: target_node.forward_travel_mode;
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const auto number_of_segments = leg_geometry.GetNumberOfSegments();
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std::vector<RouteStep> steps;
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steps.reserve(number_of_segments);
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std::size_t segment_index = 0;
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const auto initial_modifier =
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leg_geometry.locations.size() >= 3
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? angleToDirectionModifier(util::coordinate_calculation::computeAngle(
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leg_geometry.locations[0], leg_geometry.locations[1], leg_geometry.locations[2]))
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: extractor::guidance::DirectionModifier::UTurn;
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if (leg_data.size() > 0)
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{
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StepManeuver maneuver = detail::stepManeuverFromGeometry(
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extractor::guidance::TurnInstruction{extractor::guidance::TurnType::NoTurn,
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initial_modifier},
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WaypointType::Depart, leg_geometry, segment_index, INVALID_EXIT_NR);
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// PathData saves the information we need of the segment _before_ the turn,
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// but a RouteStep is with regard to the segment after the turn.
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// We need to skip the first segment because it is already covered by the
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// initial start of a route
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int segment_duration = 0;
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for (const auto &path_point : leg_data)
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{
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segment_duration += path_point.duration_until_turn;
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if (path_point.turn_instruction != extractor::guidance::TurnInstruction::NO_TURN())
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{
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BOOST_ASSERT(segment_duration >= 0);
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const auto name = facade.get_name_for_id(path_point.name_id);
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const auto distance = leg_geometry.segment_distances[segment_index];
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steps.push_back(RouteStep{path_point.name_id, name, segment_duration / 10.0,
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distance, path_point.travel_mode, maneuver,
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leg_geometry.FrontIndex(segment_index),
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leg_geometry.BackIndex(segment_index) + 1});
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maneuver = detail::stepManeuverFromGeometry(path_point.turn_instruction,
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WaypointType::None, leg_geometry,
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segment_index, path_point.exit);
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segment_index++;
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segment_duration = 0;
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}
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}
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const auto distance = leg_geometry.segment_distances[segment_index];
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const int duration = segment_duration + target_duration;
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BOOST_ASSERT(duration >= 0);
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steps.push_back(RouteStep{target_node.name_id, facade.get_name_for_id(target_node.name_id),
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duration / 10., distance, target_mode, maneuver,
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leg_geometry.FrontIndex(segment_index),
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leg_geometry.BackIndex(segment_index) + 1});
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}
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// In this case the source + target are on the same edge segment
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else
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{
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BOOST_ASSERT(source_node.fwd_segment_position == target_node.fwd_segment_position);
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// s t
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// u-------------v
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// |---| source_duration
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// |---------| target_duration
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StepManeuver maneuver = {source_node.location, 0., 0.,
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extractor::guidance::TurnInstruction{
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extractor::guidance::TurnType::NoTurn, initial_modifier},
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WaypointType::Depart, INVALID_EXIT_NR};
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int duration = target_duration - source_duration;
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BOOST_ASSERT(duration >= 0);
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steps.push_back(RouteStep{source_node.name_id, facade.get_name_for_id(source_node.name_id),
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duration / 10., leg_geometry.segment_distances[segment_index], source_mode,
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std::move(maneuver), leg_geometry.FrontIndex(segment_index),
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leg_geometry.BackIndex(segment_index) + 1});
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}
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BOOST_ASSERT(segment_index == number_of_segments - 1);
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const auto final_modifier =
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leg_geometry.locations.size() >= 3
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? angleToDirectionModifier(util::coordinate_calculation::computeAngle(
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leg_geometry.locations[leg_geometry.locations.size() - 3],
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leg_geometry.locations[leg_geometry.locations.size() - 2],
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leg_geometry.locations[leg_geometry.locations.size() - 1]))
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: extractor::guidance::DirectionModifier::UTurn;
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// This step has length zero, the only reason we need it is the target location
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steps.push_back(RouteStep{
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target_node.name_id, facade.get_name_for_id(target_node.name_id), 0., 0., target_mode,
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StepManeuver{target_node.location, 0., 0.,
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extractor::guidance::TurnInstruction{extractor::guidance::TurnType::NoTurn,
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final_modifier},
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WaypointType::Arrive, INVALID_EXIT_NR},
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leg_geometry.locations.size(), leg_geometry.locations.size()});
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return steps;
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}
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} // namespace guidance
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} // namespace engine
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} // namespace osrm
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#endif // ENGINE_GUIDANCE_SEGMENT_LIST_HPP_
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