void ApiResponseGenerator<DataFacadeT>::DescribeRoute(const RouteParameters &config,
const InternalRouteResult &raw_route,
util::json::Object &json_result)
{
if (!raw_route.is_valid())
{
return;
}
const constexpr bool ALLOW_SIMPLIFICATION = true;
const constexpr bool EXTRACT_ROUTE = false;
const constexpr bool EXTRACT_ALTERNATIVE = true;
Segments segment_list(raw_route, EXTRACT_ROUTE, config.zoom_level, ALLOW_SIMPLIFICATION,
facade);
json_result.values["route_summary"] = SummarizeRoute(raw_route, segment_list);
json_result.values["via_points"] = ListViaPoints(raw_route);
json_result.values["via_indices"] = ListViaIndices(segment_list);
if (config.geometry)
{
json_result.values["route_geometry"] = GetGeometry(config.compression, segment_list);
}
if (config.print_instructions)
{
json_result.values["route_instructions"] =
guidance::AnnotateRoute(segment_list.Get(), facade);
}
RouteNames route_names;
if (raw_route.has_alternative())
{
Segments alternate_segment_list(raw_route, EXTRACT_ALTERNATIVE, config.zoom_level,
ALLOW_SIMPLIFICATION, facade);
// Alternative Route Summaries are stored in an array to (down the line) allow multiple
// alternatives
util::json::Array json_alternate_route_summary_array;
json_alternate_route_summary_array.values.emplace_back(
SummarizeRoute(raw_route, alternate_segment_list));
json_result.values["alternative_summaries"] = json_alternate_route_summary_array;
json_result.values["alternative_indices"] = ListViaIndices(alternate_segment_list);
if (config.geometry)
{
auto alternate_geometry_string =
GetGeometry(config.compression, alternate_segment_list);
util::json::Array json_alternate_geometries_array;
json_alternate_geometries_array.values.emplace_back(
std::move(alternate_geometry_string));
json_result.values["alternative_geometries"] = json_alternate_geometries_array;
}
if (config.print_instructions)
{
util::json::Array json_alternate_annotations_array;
json_alternate_annotations_array.values.emplace_back(
guidance::AnnotateRoute(alternate_segment_list.Get(), facade));
json_result.values["alternative_instructions"] = json_alternate_annotations_array;
}
// generate names for both the main path and the alternative route
auto path_segments = BuildRouteSegments(segment_list);
auto alternate_segments = BuildRouteSegments(alternate_segment_list);
route_names = extractRouteNames(path_segments, alternate_segments, facade);
util::json::Array json_alternate_names_array;
util::json::Array json_alternate_names;
json_alternate_names.values.push_back(route_names.alternative_path_name_1);
json_alternate_names.values.push_back(route_names.alternative_path_name_2);
json_alternate_names_array.values.emplace_back(std::move(json_alternate_names));
json_result.values["alternative_names"] = json_alternate_names_array;
json_result.values["found_alternative"] = util::json::True();
}
else
{
json_result.values["found_alternative"] = util::json::False();
// generate names for the main route on its own
auto path_segments = BuildRouteSegments(segment_list);
std::vector<detail::Segment> alternate_segments;
route_names = extractRouteNames(path_segments, alternate_segments, facade);
}
util::json::Array json_route_names;
json_route_names.values.push_back(route_names.shortest_path_name_1);
json_route_names.values.push_back(route_names.shortest_path_name_2);
json_result.values["route_name"] = json_route_names;
json_result.values["hint_data"] = BuildHintData(raw_route);
}
SegmentList<DataFacadeT>::SegmentList(const InternalRouteResult &raw_route,
const bool extract_alternative,
const unsigned zoom_level,
const bool allow_simplification,
const DataFacade *facade)
: total_distance(0), total_duration(0)
{
if (!raw_route.is_valid())
{
return;
}
if (extract_alternative)
{
BOOST_ASSERT(raw_route.has_alternative());
InitRoute(raw_route.segment_end_coordinates.front().source_phantom,
raw_route.alt_source_traversed_in_reverse.front());
AddLeg(raw_route.unpacked_alternative,
raw_route.segment_end_coordinates.back().target_phantom,
raw_route.alt_source_traversed_in_reverse.back(), false, facade);
}
else
{
InitRoute(raw_route.segment_end_coordinates.front().source_phantom,
raw_route.source_traversed_in_reverse.front());
for (std::size_t raw_index = 0; raw_index < raw_route.segment_end_coordinates.size();
++raw_index)
{
AddLeg(raw_route.unpacked_path_segments[raw_index],
raw_route.segment_end_coordinates[raw_index].target_phantom,
raw_route.target_traversed_in_reverse[raw_index],
raw_route.is_via_leg(raw_index), facade);
if (raw_route.is_via_leg(raw_index))
{
const auto &source_phantom =
raw_route.segment_end_coordinates[raw_index].target_phantom;
if (raw_route.target_traversed_in_reverse[raw_index] !=
raw_route.source_traversed_in_reverse[raw_index + 1])
{
bool traversed_in_reverse = raw_route.target_traversed_in_reverse[raw_index];
const extractor::TravelMode travel_mode =
(traversed_in_reverse ? source_phantom.backward_travel_mode
: source_phantom.forward_travel_mode);
const bool constexpr IS_NECESSARY = true;
const bool constexpr IS_VIA_LOCATION = true;
segments.emplace_back(source_phantom.location, source_phantom.name_id, 0, 0.f,
extractor::TurnInstruction::UTurn, IS_NECESSARY,
IS_VIA_LOCATION, travel_mode);
}
}
}
}
if (!allow_simplification)
{
// to prevent any simplifications, we mark all segments as necessary
for (auto &segment : segments)
{
segment.necessary = true;
}
}
Finalize(extract_alternative, raw_route, zoom_level, allow_simplification);
}