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Refactor turn lane passing

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This commit is contained in:
Patrick Niklaus
2017-06-16 12:35:04 +00:00
committed by Patrick Niklaus
parent 4f13208ce8
commit 37b8d3acd4
8 changed files with 78 additions and 95 deletions
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include/extractor/guidance/turn_lane_handler.hpp
+2 -4
View File
@@ -73,8 +73,6 @@ class TurnLaneHandler
typedef std::vector<TurnLaneData> LaneDataVector;
TurnLaneHandler(const util::NodeBasedDynamicGraph &node_based_graph,
const std::vector<std::uint32_t> &turn_lane_offsets,
const std::vector<TurnLaneType::Mask> &turn_lane_masks,
LaneDescriptionMap &lane_description_map,
const TurnAnalysis &turn_analysis,
util::guidance::LaneDataIdMap &id_map);
@@ -90,8 +88,8 @@ class TurnLaneHandler
// we need to be able to look at previous intersections to, in some cases, find the correct turn
// lanes for a turn
const util::NodeBasedDynamicGraph &node_based_graph;
const std::vector<std::uint32_t> &turn_lane_offsets;
const std::vector<TurnLaneType::Mask> &turn_lane_masks;
std::vector<std::uint32_t> turn_lane_offsets;
std::vector<TurnLaneType::Mask> turn_lane_masks;
LaneDescriptionMap &lane_description_map;
const TurnAnalysis &turn_analysis;
util::guidance::LaneDataIdMap &id_map;
include/extractor/guidance/turn_lane_types.hpp
+29
View File
@@ -7,6 +7,7 @@
#include <string>
#include <unordered_map>
#include <vector>
#include <numeric> //partial_sum
#include <boost/functional/hash.hpp>
@@ -99,6 +100,34 @@ typedef util::ConcurrentIDMap<guidance::TurnLaneDescription,
guidance::TurnLaneDescription_hash>
LaneDescriptionMap;
inline std::tuple<std::vector<std::uint32_t>, std::vector<TurnLaneType::Mask>>
transformTurnLaneMapIntoArrays(const LaneDescriptionMap &turn_lane_map)
{
// could use some additional capacity? To avoid a copy during processing, though small data so
// probably not that important.
//
// From the map, we construct an adjacency array that allows access from all IDs to the list of
// associated Turn Lane Masks.
//
// turn lane offsets points into the locations of the turn_lane_masks array. We use a standard
// adjacency array like structure to store the turn lane masks.
std::vector<std::uint32_t> turn_lane_offsets(turn_lane_map.data.size() +
2); // empty ID + sentinel
for (auto entry = turn_lane_map.data.begin(); entry != turn_lane_map.data.end(); ++entry)
turn_lane_offsets[entry->second + 1] = entry->first.size();
// inplace prefix sum
std::partial_sum(turn_lane_offsets.begin(), turn_lane_offsets.end(), turn_lane_offsets.begin());
// allocate the current masks
std::vector<guidance::TurnLaneType::Mask> turn_lane_masks(turn_lane_offsets.back());
for (auto entry = turn_lane_map.data.begin(); entry != turn_lane_map.data.end(); ++entry)
std::copy(entry->first.begin(),
entry->first.end(),
turn_lane_masks.begin() + turn_lane_offsets[entry->second]);
return std::make_tuple(std::move(turn_lane_offsets), std::move(turn_lane_masks));
}
} // guidance
} // extractor
} // osrm