Open-Harbor/osrm-backend
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 3 Wiki Activity

restructured to only return valid turns to the outside + cleanup

Browse Source
This commit is contained in:
Moritz Kobitzsch
2016-03-17 14:09:09 +01:00
committed by Patrick Niklaus
parent 71c0d5253d
commit 0cc23dec6f
8 changed files with 1286 additions and 1155 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/extractor/guidance/toolkit.hpp
+6 -1
View File
@@ -17,7 +17,6 @@
#include <cmath>
#include <cstdint>
#include <string>
#include <iostream>
namespace osrm
{
@@ -391,6 +390,9 @@ inline bool requiresNameAnnounced(const std::string &from, const std::string &to
inline int getPriority( const FunctionalRoadClass road_class )
{
//The road priorities indicate which roads can bee seen as more or less equal.
//They are used in Fork-Discovery. Possibly should be moved to profiles post v5?
//A fork can happen between road types that are at most 1 priority apart from each other
const constexpr int road_priority[] = {10, 0, 10, 2, 10, 4, 10, 6, 10, 8, 10, 11, 10, 12, 10, 14};
return road_priority[static_cast<int>(road_class)];
}
@@ -398,6 +400,9 @@ inline int getPriority( const FunctionalRoadClass road_class )
inline bool canBeSeenAsFork(const FunctionalRoadClass first, const FunctionalRoadClass second)
{
// forks require similar road categories
// Based on the priorities assigned above, we can set forks only if the road priorities match closely.
// Potentially we could include features like number of lanes here and others?
// Should also be moved to profiles
return std::abs(getPriority(first) - getPriority(second)) <= 1;
}
include/extractor/guidance/turn_analysis.hpp
+77 -85
View File
@@ -23,33 +23,49 @@ namespace extractor
namespace guidance
{
struct TurnCandidate
// What is exposed to the outside
struct TurnOperation final
{
EdgeID eid; // the id of the arc
bool valid; // a turn may be relevant to good instructions, even if we cannot take the road
double angle; // the approximated angle of the turn
TurnInstruction instruction; // a proposed instruction
double confidence; // how close to the border is the turn?
EdgeID eid;
double angle;
TurnInstruction instruction;
};
// For the turn analysis, we require a full list of all connected roads to determine the outcome.
// Invalid turns can influence the perceived angles
//
// aaa(2)aa
// a - bbbbb
// aaa(1)aa
//
// will not be perceived as a turn from (1) -> b, and as a U-turn from (1) -> (2).
// In addition, they can influence whether a turn is obvious or not.
struct ConnectedRoad final
{
ConnectedRoad(const TurnOperation turn, const bool entry_allowed = false);
TurnOperation turn;
bool entry_allowed; // a turn may be relevant to good instructions, even if we cannot take
// the road
std::string toString() const
{
std::string result = "[turn] ";
result += std::to_string(eid);
result += " valid: ";
result += std::to_string(valid);
std::string result = "[connection] ";
result += std::to_string(turn.eid);
result += " allows entry: ";
result += std::to_string(entry_allowed);
result += " angle: ";
result += std::to_string(angle);
result += std::to_string(turn.angle);
result += " instruction: ";
result += std::to_string(static_cast<std::int32_t>(instruction.type)) + " " +
std::to_string(static_cast<std::int32_t>(instruction.direction_modifier));
result += " confidence: ";
result += std::to_string(confidence);
result += std::to_string(static_cast<std::int32_t>(turn.instruction.type)) + " " +
std::to_string(static_cast<std::int32_t>(turn.instruction.direction_modifier));
return result;
}
};
class TurnAnalysis
{
public:
TurnAnalysis(const util::NodeBasedDynamicGraph &node_based_graph,
const std::vector<QueryNode> &node_info_list,
@@ -59,7 +75,7 @@ class TurnAnalysis
const util::NameTable &name_table);
// the entry into the turn analysis
std::vector<TurnCandidate> getTurns(const NodeID from_node, const EdgeID via_eid) const;
std::vector<TurnOperation> getTurns(const NodeID from_node, const EdgeID via_eid) const;
private:
const util::NodeBasedDynamicGraph &node_based_graph;
@@ -69,11 +85,12 @@ class TurnAnalysis
const CompressedEdgeContainer &compressed_edge_container;
const util::NameTable &name_table;
// Check for restrictions/barriers and generate a list of valid and invalid turns present at the
// Check for restrictions/barriers and generate a list of valid and invalid turns present at
// the
// node reached
// from `from_node` via `via_eid`
// The resulting candidates have to be analysed for their actual instructions later on.
std::vector<TurnCandidate> getTurnCandidates(const NodeID from_node,
std::vector<ConnectedRoad> getConnectedRoads(const NodeID from_node,
const EdgeID via_eid) const;
// Merge segregated roads to omit invalid turns in favor of treating segregated roads as
@@ -87,10 +104,7 @@ class TurnAnalysis
//
// The treatment results in a straight turn angle of 180º rather than a turn angle of approx
// 160
std::vector<TurnCandidate>
mergeSegregatedRoads(const NodeID from_node,
const EdgeID via_eid,
std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> mergeSegregatedRoads(std::vector<ConnectedRoad> intersection) const;
// TODO distinguish roundabouts and rotaries
// TODO handle bike/walk cases that allow crossing a roundabout!
@@ -98,108 +112,86 @@ class TurnAnalysis
// Processing of roundabouts
// Produces instructions to enter/exit a roundabout or to stay on it.
// Performs the distinction between roundabout and rotaries.
std::vector<TurnCandidate> handleRoundabouts(const NodeID from,
const EdgeID via_edge,
std::vector<ConnectedRoad> handleRoundabouts(const EdgeID via_edge,
const bool on_roundabout,
const bool can_enter_roundabout,
const bool can_exit_roundabout,
std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> intersection) const;
// Indicates a Junction containing a motoryway
bool isMotorwayJunction(const NodeID from,
const EdgeID via_edge,
const std::vector<TurnCandidate> &turn_candidates) const;
bool isMotorwayJunction(const EdgeID via_edge,
const std::vector<ConnectedRoad> &intersection) const;
// Decide whether a turn is a turn or a ramp access
TurnType findBasicTurnType(const EdgeID via_edge, const TurnCandidate &candidate) const;
TurnType findBasicTurnType(const EdgeID via_edge, const ConnectedRoad &candidate) const;
// Get the Instruction for an obvious turn
// Instruction will be a silent instruction
TurnInstruction getInstructionForObvious(const std::size_t number_of_candidates,
const EdgeID via_edge,
const TurnCandidate &candidate) const;
const ConnectedRoad &candidate) const;
// Helper Function that decides between NoTurn or NewName
TurnInstruction
noTurnOrNewName(const NodeID from, const EdgeID via_edge, const TurnCandidate &candidate) const;
noTurnOrNewName(const NodeID from, const EdgeID via_edge, const ConnectedRoad &candidate) const;
// Basic Turn Handling
// Dead end.
std::vector<TurnCandidate> handleOneWayTurn(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> handleOneWayTurn(std::vector<ConnectedRoad> intersection) const;
// Mode Changes, new names...
std::vector<TurnCandidate> handleTwoWayTurn(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> handleTwoWayTurn(const EdgeID via_edge,
std::vector<ConnectedRoad> intersection) const;
// Forks, T intersections and similar
std::vector<TurnCandidate> handleThreeWayTurn(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> handleThreeWayTurn(const EdgeID via_edge,
std::vector<ConnectedRoad> intersection) const;
// Normal Intersection. Can still contain forks...
std::vector<TurnCandidate> handleFourWayTurn(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
// Fallback for turns of high complexion
std::vector<TurnCandidate> handleComplexTurn(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
// Handling of turns larger then degree three
std::vector<ConnectedRoad> handleComplexTurn(const EdgeID via_edge,
std::vector<ConnectedRoad> intersection) const;
// Any Junction containing motorways
std::vector<TurnCandidate> handleMotorwayJunction(
const NodeID from, const EdgeID via_edge, std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> handleMotorwayJunction(
const EdgeID via_edge, std::vector<ConnectedRoad> intersection) const;
std::vector<TurnCandidate> handleFromMotorway(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> handleFromMotorway(const EdgeID via_edge,
std::vector<ConnectedRoad> intersection) const;
std::vector<TurnCandidate> handleMotorwayRamp(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad> handleMotorwayRamp(const EdgeID via_edge,
std::vector<ConnectedRoad> intersection) const;
// Utility function, setting basic turn types. Prepares for normal turn handling.
std::vector<TurnCandidate> setTurnTypes(const NodeID from,
std::vector<ConnectedRoad> setTurnTypes(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
// Utility function to handle direction modifier conflicts if reasonably possible
std::vector<TurnCandidate> handleConflicts(const NodeID from,
const EdgeID via_edge,
std::vector<TurnCandidate> turn_candidates) const;
// node_u -- (edge_1) --> node_v -- (edge_2) --> node_w
TurnInstruction AnalyzeTurn(const NodeID node_u,
const EdgeID edge1,
const NodeID node_v,
const EdgeID edge2,
const NodeID node_w,
const double angle) const;
std::vector<ConnectedRoad> intersection) const;
// Assignment of specific turn types
void assignFork(const EdgeID via_edge, TurnCandidate &left, TurnCandidate &right) const;
void assignFork(const EdgeID via_edge, ConnectedRoad &left, ConnectedRoad &right) const;
void assignFork(const EdgeID via_edge,
TurnCandidate &left,
TurnCandidate &center,
TurnCandidate &right) const;
ConnectedRoad &left,
ConnectedRoad &center,
ConnectedRoad &right) const;
void
handleDistinctConflict(const EdgeID via_edge, TurnCandidate &left, TurnCandidate &right) const;
handleDistinctConflict(const EdgeID via_edge, ConnectedRoad &left, ConnectedRoad &right) const;
// Type specific fallbacks
std::vector<TurnCandidate>
fallbackTurnAssignmentMotorway(std::vector<TurnCandidate> turn_candidates) const;
std::vector<ConnectedRoad>
fallbackTurnAssignmentMotorway(std::vector<ConnectedRoad> intersection) const;
//Classification
std::size_t findObviousTurn( const EdgeID via_edge, const std::vector<TurnCandidate> &turn_candidates) const;
std::pair<std::size_t,std::size_t> findFork( const EdgeID via_edge, const std::vector<TurnCandidate> &turn_candidates) const;
// Classification
std::size_t findObviousTurn(const EdgeID via_edge,
const std::vector<ConnectedRoad> &intersection) const;
std::pair<std::size_t, std::size_t>
findFork(const std::vector<ConnectedRoad> &intersection) const;
std::vector<TurnCandidate> assignLeftTurns( const EdgeID via_edge, std::vector<TurnCandidate> turn_candidates, const std::size_t starting_at ) const;
std::vector<TurnCandidate> assignRightTurns( const EdgeID via_edge, std::vector<TurnCandidate> turn_candidates, const std::size_t up_to ) const;
std::vector<ConnectedRoad> assignLeftTurns(const EdgeID via_edge,
std::vector<ConnectedRoad> intersection,
const std::size_t starting_at) const;
std::vector<ConnectedRoad> assignRightTurns(const EdgeID via_edge,
std::vector<ConnectedRoad> intersection,
const std::size_t up_to) const;
}; // class TurnAnalysis