91 lines
3.3 KiB
C
91 lines
3.3 KiB
C
/*
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open source routing machine
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Copyright (C) Dennis Luxen, others 2010
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU AFFERO General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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or see http://www.gnu.org/licenses/agpl.txt.
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*/
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#ifndef TURNINSTRUCTIONS_H_
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#define TURNINSTRUCTIONS_H_
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#include <boost/noncopyable.hpp>
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typedef unsigned char TurnInstruction;
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//This is a hack until c++0x is available enough to use scoped enums
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struct TurnInstructionsClass : boost::noncopyable {
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const static TurnInstruction NoTurn = 0; //Give no instruction at all
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const static TurnInstruction GoStraight = 1; //Tell user to go straight!
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const static TurnInstruction TurnSlightRight = 2;
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const static TurnInstruction TurnRight = 3;
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const static TurnInstruction TurnSharpRight = 4;
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const static TurnInstruction UTurn = 5;
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const static TurnInstruction TurnSharpLeft = 6;
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const static TurnInstruction TurnLeft = 7;
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const static TurnInstruction TurnSlightLeft = 8;
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const static TurnInstruction ReachViaPoint = 9;
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const static TurnInstruction HeadOn = 10;
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const static TurnInstruction EnterRoundAbout = 11;
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const static TurnInstruction LeaveRoundAbout = 12;
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const static TurnInstruction StayOnRoundAbout = 13;
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const static TurnInstruction StartAtEndOfStreet = 14;
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const static TurnInstruction ReachedYourDestination = 15;
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const static TurnInstruction EnterAgainstAllowedDirection = 16;
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const static TurnInstruction LeaveAgainstAllowedDirection = 17;
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const static TurnInstruction AccessRestrictionFlag = 128;
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const static TurnInstruction InverseAccessRestrictionFlag = 0x7f; // ~128 does not work without a warning.
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const static int AccessRestrictionPenalty = 1 << 15; //unrelated to the bit set in the restriction flag
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static inline TurnInstruction GetTurnDirectionOfInstruction( const double angle ) {
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if(angle >= 23 && angle < 67) {
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return TurnSharpRight;
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}
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if (angle >= 67 && angle < 113) {
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return TurnRight;
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}
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if (angle >= 113 && angle < 158) {
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return TurnSlightRight;
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}
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if (angle >= 158 && angle < 202) {
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return GoStraight;
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}
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if (angle >= 202 && angle < 248) {
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return TurnSlightLeft;
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}
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if (angle >= 248 && angle < 292) {
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return TurnLeft;
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}
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if (angle >= 292 && angle < 336) {
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return TurnSharpLeft;
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}
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return UTurn;
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}
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static inline bool TurnIsNecessary ( const short turnInstruction ) {
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if(NoTurn == turnInstruction || StayOnRoundAbout == turnInstruction)
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return false;
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return true;
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}
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};
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static TurnInstructionsClass TurnInstructions;
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#endif /* TURNINSTRUCTIONS_H_ */
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