# include "config.h"
#endif
-#include <simgear/compiler.h>
-
-#include <string>
+#include "navdb.hxx"
+#include <simgear/compiler.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/misc/strutils.hxx>
#include <simgear/misc/sg_path.hxx>
#include <simgear/structure/exception.hxx>
#include <simgear/misc/sgstream.hxx>
+#include <simgear/props/props_io.hxx>
+#include <simgear/sg_inlines.h>
#include "navrecord.hxx"
#include "navlist.hxx"
-#include "navdb.hxx"
-#include "Main/globals.hxx"
+#include <Main/globals.hxx>
+#include <Navaids/markerbeacon.hxx>
+#include <Airports/airport.hxx>
+#include <Airports/runways.hxx>
+#include <Airports/xmlloader.hxx>
+#include <Main/fg_props.hxx>
+#include <Navaids/NavDataCache.hxx>
using std::string;
+using std::vector;
+static FGPositioned::Type
+mapRobinTypeToFGPType(int aTy)
+{
+ switch (aTy) {
+ // case 1:
+ case 2: return FGPositioned::NDB;
+ case 3: return FGPositioned::VOR;
+ case 4: return FGPositioned::ILS;
+ case 5: return FGPositioned::LOC;
+ case 6: return FGPositioned::GS;
+ case 7: return FGPositioned::OM;
+ case 8: return FGPositioned::MM;
+ case 9: return FGPositioned::IM;
+ case 12:
+ case 13: return FGPositioned::DME;
+ case 99: return FGPositioned::INVALID; // end-of-file code
+ default:
+ throw sg_range_exception("Got a nav.dat type we don't recognize", "FGNavRecord::createFromStream");
+ }
+}
-// load and initialize the navigational databases
-bool fgNavDBInit( FGNavList *navlist, FGNavList *loclist, FGNavList *gslist,
- FGNavList *dmelist,
- FGNavList *tacanlist, FGNavList *carrierlist,
- FGTACANList *channellist)
+static bool autoAlignLocalizers = false;
+static double autoAlignThreshold = 0.0;
+
+/**
+ * Given a runway, and proposed localizer data (ident, positioned and heading),
+ * precisely align the localizer with the actual runway heading, providing the
+ * difference between the localizer course and runway heading is less than a
+ * threshold. (To allow for localizers such as Kai-Tak requiring a turn on final).
+ *
+ * The positioned and heading argument are modified if changes are made.
+ */
+void alignLocaliserWithRunway(FGRunway* rwy, const string& ident, SGGeod& pos, double& heading)
+{
+ assert(rwy);
+ // find the distance from the threshold to the localizer
+ double dist = SGGeodesy::distanceM(pos, rwy->threshold());
+
+ // back project that distance along the runway center line
+ SGGeod newPos = rwy->pointOnCenterline(dist);
+
+ double hdg_diff = heading - rwy->headingDeg();
+ SG_NORMALIZE_RANGE(hdg_diff, -180.0, 180.0);
+
+ if ( fabs(hdg_diff) <= autoAlignThreshold ) {
+ pos = SGGeod::fromGeodFt(newPos, pos.getElevationFt());
+ heading = rwy->headingDeg();
+ } else {
+ SG_LOG(SG_NAVAID, SG_DEBUG, "localizer:" << ident << ", aligning with runway "
+ << rwy->ident() << " exceeded heading threshold");
+ }
+}
+
+static double defaultNavRange(const string& ident, FGPositioned::Type type)
+{
+ // Ranges are included with the latest data format, no need to
+ // assign our own defaults, unless the range is not set for some
+ // reason.
+ SG_LOG(SG_NAVAID, SG_DEBUG, "navaid " << ident << " has no range set, using defaults");
+ switch (type) {
+ case FGPositioned::NDB:
+ case FGPositioned::VOR:
+ return FG_NAV_DEFAULT_RANGE;
+
+ case FGPositioned::LOC:
+ case FGPositioned::ILS:
+ case FGPositioned::GS:
+ return FG_LOC_DEFAULT_RANGE;
+
+ case FGPositioned::DME: return FG_DME_DEFAULT_RANGE;
+ default: return FG_LOC_DEFAULT_RANGE;
+ }
+}
+
+
+namespace flightgear
+{
+
+static PositionedID readNavFromStream(std::istream& aStream,
+ FGPositioned::Type type = FGPositioned::INVALID)
{
- SG_LOG(SG_GENERAL, SG_INFO, "Loading Navaid Databases");
- // SG_LOG(SG_GENERAL, SG_INFO, " VOR/NDB");
- // SGPath p_nav( globals->get_fg_root() );
- // p_nav.append( "Navaids/default.nav" );
- // navlist->init( p_nav );
+ NavDataCache* cache = NavDataCache::instance();
+
+ int rawType;
+ aStream >> rawType;
+ if (aStream.eof() || (rawType == 99)) {
+ return 0; // happens with, eg, carrier_nav.dat
+ }
+
+ double lat, lon, elev_ft, multiuse;
+ int freq, range;
+ std::string name, ident;
+ aStream >> lat >> lon >> elev_ft >> freq >> range >> multiuse >> ident;
+ getline(aStream, name);
+
+ SGGeod pos(SGGeod::fromDegFt(lon, lat, elev_ft));
+ name = simgear::strutils::strip(name);
+
+// the type can be forced by our caller, but normally we use th value
+// supplied in the .dat file
+ if (type == FGPositioned::INVALID) {
+ type = mapRobinTypeToFGPType(rawType);
+ }
+ if (type == FGPositioned::INVALID) {
+ return 0;
+ }
+
+ if ((type >= FGPositioned::OM) && (type <= FGPositioned::IM)) {
+ AirportRunwayPair arp(cache->findAirportRunway(name));
+ if (arp.second && (elev_ft < 0.01)) {
+ // snap to runway elevation
+ FGPositioned* runway = cache->loadById(arp.second);
+ assert(runway);
+ pos.setElevationFt(runway->geod().getElevationFt());
+ }
- // SG_LOG(SG_GENERAL, SG_INFO, " ILS and Marker Beacons");
- // beacons->init();
- // SGPath p_ils( globals->get_fg_root() );
- // p_ils.append( "Navaids/default.ils" );
- // ilslist->init( p_ils );
+ return cache->insertNavaid(type, string(), name, pos, 0, 0, 0,
+ arp.first, arp.second);
+ }
+
+ if (range < 0.01) {
+ range = defaultNavRange(ident, type);
+ }
+
+ AirportRunwayPair arp;
+ FGRunway* runway = NULL;
+ PositionedID navaid_dme = 0;
+ if (type == FGPositioned::DME) {
+ FGPositioned::TypeFilter f(FGPositioned::INVALID);
+ if ( name.find("VOR-DME") != std::string::npos ) {
+ f.addType(FGPositioned::VOR);
+ } else if ( name.find("DME-ILS") != std::string::npos ) {
+ f.addType(FGPositioned::ILS);
+ f.addType(FGPositioned::LOC);
+ } else if ( name.find("VORTAC") != std::string::npos ) {
+ f.addType(FGPositioned::VOR);
+ } else if ( name.find("NDB-DME") != std::string::npos ) {
+ f.addType(FGPositioned::NDB);
+ } else if ( name.find("TACAN") != std::string::npos ) {
+ f.addType(FGPositioned::VOR);
+ }
- SGPath path( globals->get_fg_root() );
- path.append( "Navaids/nav.dat" );
+ if (f.maxType() > 0) {
+ FGPositionedRef ref = FGPositioned::findClosestWithIdent(ident, pos, &f);
+ if (ref.valid()) {
+ string_list dme_part = simgear::strutils::split(name , 0 ,1);
+ string_list navaid_part = simgear::strutils::split(ref.get()->name(), 0 ,1);
+ if ( simgear::strutils::uppercase(navaid_part[0]) == simgear::strutils::uppercase(dme_part[0]) ) {
+ navaid_dme = ref.get()->guid();
+ }
+ }
+ }
+ }
+
+ if ((type >= FGPositioned::ILS) && (type <= FGPositioned::GS)) {
+ arp = cache->findAirportRunway(name);
+ if (arp.second) {
+ runway = FGPositioned::loadById<FGRunway>(arp.second);
+ assert(runway);
+#if 0
+ // code is disabled since it's causing some problems, see
+ // http://code.google.com/p/flightgear-bugs/issues/detail?id=926
+ if (elev_ft < 0.01) {
+ // snap to runway elevation
+ pos.setElevationFt(runway->geod().getElevationFt());
+ }
+#endif
+ } // of found runway in the DB
+ } // of type is runway-related
+
+ bool isLoc = (type == FGPositioned::ILS) || (type == FGPositioned::LOC);
+ if (runway && autoAlignLocalizers && isLoc) {
+ alignLocaliserWithRunway(runway, ident, pos, multiuse);
+ }
+
+ // silently multiply adf frequencies by 100 so that adf
+ // vs. nav/loc frequency lookups can use the same code.
+ if (type == FGPositioned::NDB) {
+ freq *= 100;
+ }
+
+ PositionedID r = cache->insertNavaid(type, ident, name, pos, freq, range, multiuse,
+ arp.first, arp.second);
+
+ if (isLoc) {
+ cache->setRunwayILS(arp.second, r);
+ }
+
+ if (navaid_dme) {
+ cache->setNavaidColocated(navaid_dme, r);
+ }
+
+ return r;
+}
+
+// load and initialize the navigational databases
+bool navDBInit(const SGPath& path)
+{
sg_gzifstream in( path.str() );
if ( !in.is_open() ) {
- SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << path.str() );
- exit(-1);
+ SG_LOG( SG_NAVAID, SG_ALERT, "Cannot open file: " << path.str() );
+ return false;
}
+
+ autoAlignLocalizers = fgGetBool("/sim/navdb/localizers/auto-align", true);
+ autoAlignThreshold = fgGetDouble( "/sim/navdb/localizers/auto-align-threshold-deg", 5.0 );
// skip first two lines
in >> skipeol;
in >> skipeol;
while (!in.eof()) {
- FGNavRecord *r = FGNavRecord::createFromStream(in);
- if (!r) {
- break;
- }
-
- switch (r->type()) {
- case FGPositioned::NDB:
- case FGPositioned::VOR:
- navlist->add(r);
- break;
-
- case FGPositioned::ILS:
- case FGPositioned::LOC:
- loclist->add(r);
- break;
-
- case FGPositioned::GS:
- gslist->add(r);
- break;
-
- case FGPositioned::OM:
- case FGPositioned::MM:
- case FGPositioned::IM:
- // no need to add this to a list, never searched by frequency
- break;
-
- case FGPositioned::DME:
- {
- dmelist->add(r);
- string::size_type loc1= r->name().find( "TACAN", 0 );
- string::size_type loc2 = r->name().find( "VORTAC", 0 );
-
- if( loc1 != string::npos || loc2 != string::npos) {
- tacanlist->add(r);
- }
-
- break;
- }
-
- default:
- throw sg_range_exception("got unsupported NavRecord type", "fgNavDBInit");
- }
-
+ readNavFromStream(in);
in >> skipcomment;
} // of stream data loop
-
-// load the carrier navaids file
-
- string file, name;
- path = globals->get_fg_root() ;
- path.append( "Navaids/carrier_nav.dat" );
-
- file = path.str();
- SG_LOG( SG_GENERAL, SG_INFO, "opening file: " << path.str() );
-
+
+ return true;
+}
+
+
+bool loadCarrierNav(const SGPath& path)
+{
+ SG_LOG( SG_NAVAID, SG_INFO, "opening file: " << path.str() );
sg_gzifstream incarrier( path.str() );
if ( !incarrier.is_open() ) {
- SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << path.str() );
- exit(-1);
+ SG_LOG( SG_NAVAID, SG_ALERT, "Cannot open file: " << path.str() );
+ return false;
}
- // skip first two lines
- //incarrier >> skipeol;
- //incarrier >> skipeol;
-
while ( ! incarrier.eof() ) {
- FGNavRecord *r = FGNavRecord::createFromStream(incarrier);
- if (!r) {
- continue;
- }
-
- carrierlist->add (r);
+ // force the type to be MOBILE_TACAN
+ readNavFromStream(incarrier, FGPositioned::MOBILE_TACAN);
} // end while
-// end loading the carrier navaids file
-
-// load the channel/freqency file
- string channel, freq;
- path="";
- path = globals->get_fg_root();
- path.append( "Navaids/TACAN_freq.dat" );
-
- SG_LOG( SG_GENERAL, SG_INFO, "opening file: " << path.str() );
-
+ return true;
+}
+
+bool loadTacan(const SGPath& path, FGTACANList *channellist)
+{
+ SG_LOG( SG_NAVAID, SG_INFO, "opening file: " << path.str() );
sg_gzifstream inchannel( path.str() );
if ( !inchannel.is_open() ) {
- SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << path.str() );
- exit(-1);
+ SG_LOG( SG_NAVAID, SG_ALERT, "Cannot open file: " << path.str() );
+ return false;
}
// skip first line
FGTACANRecord *r = new FGTACANRecord;
inchannel >> (*r);
channellist->add ( r );
- //cout << "channel = " << r->get_channel() ;
- //cout << " freq = " << r->get_freq() << endl;
} // end while
-
- // end ReadChanFile
-
-
return true;
}
+
+} // of namespace flightgear
projects / flightgear.git / blobdiff