2 * NavDataCache.hxx - defines a unified binary cache for navigation
3 * data, parsed from various text / XML sources.
6 // Written by James Turner, started 2012.
8 // Copyright (C) 2012 James Turner
10 // This program is free software; you can redistribute it and/or
11 // modify it under the terms of the GNU General Public License as
12 // published by the Free Software Foundation; either version 2 of the
13 // License, or (at your option) any later version.
15 // This program is distributed in the hope that it will be useful, but
16 // WITHOUT ANY WARRANTY; without even the implied warranty of
17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 // General Public License for more details.
20 // You should have received a copy of the GNU General Public License
21 // along with this program; if not, write to the Free Software
22 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
24 #ifndef FG_NAVDATACACHE_HXX
25 #define FG_NAVDATACACHE_HXX
29 #include <simgear/misc/strutils.hxx> // for string_list
30 #include <Navaids/positioned.hxx>
38 /// a pair of airport ID, runway ID
39 typedef std::pair<PositionedID, PositionedID> AirportRunwayPair;
41 typedef std::pair<FGPositioned::Type, PositionedID> TypedPositioned;
42 typedef std::vector<TypedPositioned> TypedPositionedVec;
44 // pair of airway ID, destination node ID
45 typedef std::pair<int, PositionedID> AirwayEdge;
46 typedef std::vector<AirwayEdge> AirwayEdgeVec;
59 static NavDataCache* instance();
62 * predicate - check if the cache needs to be rebuilt.
63 * This can happen is the cache file is missing or damaged, or one of the
64 ** global input files is changed.
66 bool isRebuildRequired();
69 * run the cache rebuild - returns true if rebuild is complete,
70 * otherwise keep going.
74 bool isCachedFileModified(const SGPath& path) const;
75 void stampCacheFile(const SGPath& path);
77 int readIntProperty(const std::string& key);
78 double readDoubleProperty(const std::string& key);
79 std::string readStringProperty(const std::string& key);
81 void writeIntProperty(const std::string& key, int value);
82 void writeStringProperty(const std::string& key, const std::string& value);
83 void writeDoubleProperty(const std::string& key, const double& value);
85 string_list readStringListProperty(const std::string& key);
86 void writeStringListProperty(const std::string& key, const string_list& values);
89 * retrieve an FGPositioned from the cache.
90 * This may be trivial if the object is previously loaded, or require actual
93 FGPositionedRef loadById(PositionedID guid);
95 PositionedID insertAirport(FGPositioned::Type ty, const std::string& ident,
96 const std::string& name);
97 void insertTower(PositionedID airportId, const SGGeod& pos);
98 PositionedID insertRunway(FGPositioned::Type ty, const std::string& ident,
99 const SGGeod& pos, PositionedID apt,
100 double heading, double length, double width, double displacedThreshold,
101 double stopway, int surfaceCode);
102 void setRunwayReciprocal(PositionedID runway, PositionedID recip);
103 void setRunwayILS(PositionedID runway, PositionedID ils);
105 PositionedID insertNavaid(FGPositioned::Type ty, const std::string& ident,
106 const std::string& name, const SGGeod& pos, int freq, int range, double multiuse,
107 PositionedID apt, PositionedID runway);
109 // Assign colocated DME to a navaid
110 void setNavaidColocated(PositionedID navaid, PositionedID colocatedDME);
112 PositionedID insertCommStation(FGPositioned::Type ty,
113 const std::string& name, const SGGeod& pos, int freq, int range,
115 PositionedID insertFix(const std::string& ident, const SGGeod& aPos);
117 PositionedID createPOI(FGPositioned::Type ty, const std::string& ident, const SGGeod& aPos);
119 bool removePOI(FGPositioned::Type ty, const std::string& aIdent);
121 void dropGroundnetFor(PositionedID aAirport);
124 * Remove all ground-nets globally from the cache.
125 * This includes parking and taxi-nodes and edges between them. It's useful
126 * when scenery paths change, since the ground-nets depend on the scenery.
127 * Using this we can avoid havind to rebuild the entire cache.
129 void dropAllGroundnets();
131 PositionedID insertParking(const std::string& name, const SGGeod& aPos,
132 PositionedID aAirport,
133 double aHeading, int aRadius, const std::string& aAircraftType,
134 const std::string& aAirlines);
136 void setParkingPushBackRoute(PositionedID parking, PositionedID pushBackNode);
138 PositionedID insertTaxiNode(const SGGeod& aPos, PositionedID aAirport, int aHoldType, bool aOnRunway);
140 void insertGroundnetEdge(PositionedID aAirport, PositionedID from, PositionedID to);
142 /// update the metar flag associated with an airport
143 void setAirportMetar(const std::string& icao, bool hasMetar);
146 * Modify the position of an existing item.
148 void updatePosition(PositionedID item, const SGGeod &pos);
150 FGPositionedList findAllWithIdent( const std::string& ident,
151 FGPositioned::Filter* filter,
153 FGPositionedList findAllWithName( const std::string& ident,
154 FGPositioned::Filter* filter,
157 FGPositionedRef findClosestWithIdent( const std::string& aIdent,
159 FGPositioned::Filter* aFilter );
163 * Helper to implement the AirportSearch widget. Optimised text search of
164 * airport names and idents, returning a list suitable for passing directly
167 char** searchAirportNamesAndIdents(const std::string& aFilter);
170 * Find the closest matching comm-station on a frequency, to a position.
171 * The filter with be used for both type ranging and to validate the result
174 FGPositionedRef findCommByFreq(int freqKhz, const SGGeod& pos, FGPositioned::Filter* filt);
177 * find all items of a specified type (or range of types) at an airport
179 PositionedIDVec airportItemsOfType(PositionedID apt, FGPositioned::Type ty,
180 FGPositioned::Type maxTy = FGPositioned::INVALID);
183 * find the first match item of the specified type and ident, at an airport
185 PositionedID airportItemWithIdent(PositionedID apt, FGPositioned::Type ty, const std::string& ident);
188 * Find all navaids matching a particular frequency, sorted by range from the
189 * supplied position. Type-range will be determined from the filter
191 PositionedIDVec findNavaidsByFreq(int freqKhz, const SGGeod& pos, FGPositioned::Filter* filt);
193 /// overload version of the above that does not consider positioned when
194 /// returning results. Only used by TACAN carrier search
195 PositionedIDVec findNavaidsByFreq(int freqKhz, FGPositioned::Filter* filt);
198 * Given a runway and type, find the corresponding navaid (ILS / GS / OM)
200 PositionedID findNavaidForRunway(PositionedID runway, FGPositioned::Type ty);
203 * given a navaid name (or similar) from apt.dat / nav.dat, find the
204 * corresponding airport and runway IDs.
205 * Such names look like: 'LHBP 31L DME-ILS' or 'UEEE 23L MM'
207 AirportRunwayPair findAirportRunway(const std::string& name);
210 * Given an aiport, and runway and ILS identifier, find the corresponding cache
211 * entry. This matches the data we get in the ils.xml files for airports.
213 PositionedID findILS(PositionedID airport, const std::string& runway, const std::string& navIdent);
216 * Given an Octree node ID, return a bit-mask defining which of the child
217 * nodes exist. In practice this means an 8-bit value be sufficent, but
218 * an int works fine too.
220 int getOctreeBranchChildren(int64_t octreeNodeId);
222 void defineOctreeNode(Octree::Branch* pr, Octree::Node* nd);
225 * given an octree leaf, return all its child positioned items and their types
227 TypedPositionedVec getOctreeLeafChildren(int64_t octreeNodeId);
230 int findAirway(int network, const std::string& aName);
233 * insert an edge between two positioned nodes, into the network.
234 * The airway identifier will be set accordingly. No reverse edge is created
235 * by this method - edges are directional so a reverses must be explicitly
238 void insertEdge(int network, int airwayID, PositionedID from, PositionedID to);
240 /// is the specified positioned a node on the network?
241 bool isInAirwayNetwork(int network, PositionedID pos);
244 * retrive all the destination points reachcable from a positioned
247 AirwayEdgeVec airwayEdgesFrom(int network, PositionedID pos);
250 PositionedIDVec groundNetNodes(PositionedID aAirport, bool onlyPushback);
251 void markGroundnetAsPushback(PositionedID nodeId);
253 PositionedID findGroundNetNode(PositionedID airport, const SGGeod& aPos,
254 bool onRunway, FGRunway* aRunway = NULL);
255 PositionedIDVec groundNetEdgesFrom(PositionedID pos, bool onlyPushback);
257 PositionedIDVec findAirportParking(PositionedID airport, const std::string& flightType,
264 Transaction(NavDataCache* cache);
269 NavDataCache* _instance;
273 bool isReadOnly() const;
277 friend class RebuildThread;
280 friend class Transaction;
282 void beginTransaction();
283 void commitTransaction();
284 void abortTransaction();
286 class NavDataCachePrivate;
287 std::auto_ptr<NavDataCachePrivate> d;
290 } // of namespace flightgear
292 #endif // of FG_NAVDATACACHE_HXX