82 lines
1.8 KiB
C++
82 lines
1.8 KiB
C++
#ifndef TURN_INSTRUCTIONS_HPP
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#define TURN_INSTRUCTIONS_HPP
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namespace osrm
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{
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namespace extractor
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{
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enum class TurnInstruction : unsigned char
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{
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NoTurn = 0,
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GoStraight,
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TurnSlightRight,
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TurnRight,
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TurnSharpRight,
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UTurn,
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TurnSharpLeft,
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TurnLeft,
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TurnSlightLeft,
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ReachViaLocation,
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HeadOn,
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EnterRoundAbout,
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LeaveRoundAbout,
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StayOnRoundAbout,
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StartAtEndOfStreet,
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ReachedYourDestination,
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EnterAgainstAllowedDirection,
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LeaveAgainstAllowedDirection,
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InverseAccessRestrictionFlag = 127,
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AccessRestrictionFlag = 128,
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AccessRestrictionPenalty = 129
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};
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// Translates between angles and their human-friendly directional representation
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inline TurnInstruction getTurnDirection(const double angle)
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{
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if (angle >= 23 && angle < 67)
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{
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return TurnInstruction::TurnSharpRight;
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}
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if (angle >= 67 && angle < 113)
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{
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return TurnInstruction::TurnRight;
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}
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if (angle >= 113 && angle < 158)
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{
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return TurnInstruction::TurnSlightRight;
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}
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if (angle >= 158 && angle < 202)
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{
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return TurnInstruction::GoStraight;
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}
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if (angle >= 202 && angle < 248)
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{
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return TurnInstruction::TurnSlightLeft;
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}
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if (angle >= 248 && angle < 292)
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{
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return TurnInstruction::TurnLeft;
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}
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if (angle >= 292 && angle < 336)
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{
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return TurnInstruction::TurnSharpLeft;
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}
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return TurnInstruction::UTurn;
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}
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// Decides if a turn is needed to be done for the current instruction
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inline bool isTurnNecessary(const TurnInstruction turn_instruction)
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{
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if (TurnInstruction::NoTurn == turn_instruction ||
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TurnInstruction::StayOnRoundAbout == turn_instruction)
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{
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return false;
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}
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return true;
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}
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}
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}
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#endif /* TURN_INSTRUCTIONS_HPP */
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