# include <config.h>
#endif
+#include <cassert>
+#include <boost/foreach.hpp>
+#include <algorithm>
+
#include <simgear/debug/logstream.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/sg_inlines.h>
#include "navlist.hxx"
#include <Airports/runways.hxx>
-
-#include <algorithm>
+#include <Navaids/NavDataCache.hxx>
+#include <Navaids/navrecord.hxx>
using std::string;
-// FGNavList ------------------------------------------------------------------
+namespace { // anonymous
-FGNavList::FGNavList( void )
+class NavRecordDistanceSortPredicate
{
-}
-
+public:
+ NavRecordDistanceSortPredicate( const SGGeod & position ) :
+ _position(SGVec3d::fromGeod(position)) {}
+
+ bool operator()( const nav_rec_ptr & n1, const nav_rec_ptr & n2 )
+ {
+ if( n1 == NULL || n2 == NULL ) return false;
+ return distSqr(n1->cart(), _position) < distSqr(n2->cart(), _position);
+ }
+private:
+ SGVec3d _position;
+
+};
-FGNavList::~FGNavList( void )
+// discount navids if they conflict with another on the same frequency
+// this only applies to navids associated with opposite ends of a runway,
+// with matching frequencies.
+bool navidUsable(FGNavRecord* aNav, const SGGeod &aircraft)
{
- nav_list_type navlist = navaids.begin()->second;
- navaids.erase( navaids.begin(), navaids.end() );
+ FGRunway* r(aNav->runway());
+ if (!r || !r->reciprocalRunway()) {
+ return true;
+ }
+
+ // check if the runway frequency is paired
+ FGNavRecord* locA = r->ILS();
+ FGNavRecord* locB = r->reciprocalRunway()->ILS();
+
+ if (!locA || !locB || (locA->get_freq() != locB->get_freq())) {
+ return true; // not paired, ok
+ }
+
+ // okay, both ends have an ILS, and they're paired. We need to select based on
+ // aircraft position. What we're going to use is *runway* (not navid) position,
+ // ie whichever runway end we are closer too. This makes back-course / missed
+ // approach behaviour incorrect, but that's the price we accept.
+ double crs = SGGeodesy::courseDeg(aircraft, r->geod());
+ double hdgDiff = crs - r->headingDeg();
+ SG_NORMALIZE_RANGE(hdgDiff, -180.0, 180.0);
+ return (fabs(hdgDiff) < 90.0);
}
+
+} // of anonymous namespace
+
+// FGNavList ------------------------------------------------------------------
-// load the navaids and build the map
-bool FGNavList::init()
+//------------------------------------------------------------------------------
+FGNavList::TypeFilter::TypeFilter(const FGPositioned::Type type)
{
- // No need to delete the original navaid structures
- // since we're using an SGSharedPointer
- nav_list_type navlist = navaids.begin()->second;
- navaids.erase( navaids.begin(), navaids.end() );
- return true;
+ if (type == FGPositioned::INVALID) {
+ _mintype = FGPositioned::NDB;
+ _maxtype = FGPositioned::GS;
+ } else {
+ _mintype = _maxtype = type;
+ }
}
-// add an entry to the lists
-bool FGNavList::add( FGNavRecord *n )
+//------------------------------------------------------------------------------
+FGNavList::TypeFilter::TypeFilter( const FGPositioned::Type minType,
+ const FGPositioned::Type maxType ):
+ _mintype(minType),
+ _maxtype(maxType)
{
- navaids[n->get_freq()].push_back(n);
- return true;
}
-FGNavRecord *FGNavList::findByFreq( double freq, const SGGeod& position)
+//------------------------------------------------------------------------------
+bool FGNavList::TypeFilter::fromTypeString(const std::string& type)
{
- const nav_list_type& stations = navaids[(int)(freq*100.0 + 0.5)];
- SG_LOG( SG_INSTR, SG_DEBUG, "findbyFreq " << freq << " size " << stations.size() );
- return findNavFromList( position, stations );
+ FGPositioned::Type t;
+ if( type == "any" ) t = FGPositioned::INVALID;
+ else if( type == "fix" ) t = FGPositioned::FIX;
+ else if( type == "vor" ) t = FGPositioned::VOR;
+ else if( type == "ndb" ) t = FGPositioned::NDB;
+ else if( type == "ils" ) t = FGPositioned::ILS;
+ else if( type == "dme" ) t = FGPositioned::DME;
+ else if( type == "tacan") t = FGPositioned::TACAN;
+ else return false;
+
+ _mintype = _maxtype = t;
+
+ return true;
}
-class TypeFilter : public FGPositioned::Filter
+/**
+ * Filter returning Tacan stations. Checks for both pure TACAN stations
+ * but also co-located VORTACs. This is done by searching for DMEs whose
+ * name indicates they are a TACAN or VORTAC; not a great solution.
+ */
+class TacanFilter : public FGNavList::TypeFilter
{
public:
- TypeFilter( const FGPositioned::Type mintype, const FGPositioned::Type maxtype ) : _mintype(mintype), _maxtype(maxtype) {}
-
- virtual FGPositioned::Type minType() const {
- return _mintype;
- }
-
- virtual FGPositioned::Type maxType() const {
- return _maxtype;
+ TacanFilter() :
+ TypeFilter(FGPositioned::DME, FGPositioned::TACAN)
+ {
}
-private:
- FGPositioned::Type _mintype;
- FGPositioned::Type _maxtype;
-};
-
-// Given an Ident and optional freqency, return the first matching
-// station.
-const nav_list_type FGNavList::findByIdentAndFreq(const string& ident, const double freq, const FGPositioned::Type type )
-{
- FGPositionedRef cur;
- TypeFilter filter(
- type == FGPositioned::INVALID ? FGPositioned::VOR : type,
- type == FGPositioned::INVALID ? FGPositioned::NDB : type );
- nav_list_type reply;
-
- cur = FGPositioned::findNextWithPartialId(cur, ident, &filter);
- int f = (int)(freq*100.0 + 0.5);
- while (cur) {
- FGNavRecord* nav = static_cast<FGNavRecord*>(cur.ptr());
- if ( f <= 0.0 || nav->get_freq() == f) {
- reply.push_back( nav );
+ virtual bool pass(FGPositioned* pos) const
+ {
+ if (pos->type() == FGPositioned::TACAN) {
+ return true;
}
- cur = FGPositioned::findNextWithPartialId(cur, ident, &filter);
+ assert(pos->type() == FGPositioned::DME);
+ string::size_type loc1 = pos->name().find( "TACAN" );
+ string::size_type loc2 = pos->name().find( "VORTAC" );
+ return (loc1 != string::npos) || (loc2 != string::npos);
}
+};
- return reply;
+FGNavList::TypeFilter* FGNavList::locFilter()
+{
+ static TypeFilter tf(FGPositioned::ILS, FGPositioned::LOC);
+ return &tf;
}
-class NavRecordDistanceSortPredicate
+FGNavList::TypeFilter* FGNavList::ndbFilter()
{
-public:
- NavRecordDistanceSortPredicate( const SGGeod & position ) :
- _position(SGVec3d::fromGeod(position)) {}
-
- bool operator()( const nav_rec_ptr & n1, const nav_rec_ptr & n2 )
- {
- if( n1 == NULL || n2 == NULL ) return false;
- return distSqr(n1->cart(), _position) < distSqr(n2->cart(), _position);
- }
-private:
- SGVec3d _position;
+ static TypeFilter tf(FGPositioned::NDB);
+ return &tf;
+}
-};
+FGNavList::TypeFilter* FGNavList::navFilter()
+{
+ static TypeFilter tf(FGPositioned::VOR, FGPositioned::LOC);
+ return &tf;
+}
-// Given an Ident and optional freqency and type ,
-// return a list of matching stations sorted by distance to the given position
-const nav_list_type FGNavList::findByIdentAndFreq( const SGGeod & position,
- const std::string& ident, const double freq, const FGPositioned::Type type )
+FGNavList::TypeFilter* FGNavList::tacanFilter()
{
- nav_list_type reply = findByIdentAndFreq( ident, freq, type );
- NavRecordDistanceSortPredicate sortPredicate( position );
- std::sort( reply.begin(), reply.end(), sortPredicate );
+ static TacanFilter tf;
+ return &tf;
+}
- return reply;
+FGNavList::TypeFilter* FGNavList::carrierFilter()
+{
+ static TypeFilter tf(FGPositioned::MOBILE_TACAN);
+ return &tf;
}
-// discount navids if they conflict with another on the same frequency
-// this only applies to navids associated with opposite ends of a runway,
-// with matching frequencies.
-static bool navidUsable(FGNavRecord* aNav, const SGGeod &aircraft)
+FGNavRecordRef FGNavList::findByFreq( double freq,
+ const SGGeod& position,
+ TypeFilter* filter )
{
- FGRunway* r(aNav->runway());
- if (!r || !r->reciprocalRunway()) {
- return true;
+ flightgear::NavDataCache* cache = flightgear::NavDataCache::instance();
+ int freqKhz = static_cast<int>(freq * 100 + 0.5);
+ PositionedIDVec stations(cache->findNavaidsByFreq(freqKhz, position, filter));
+ if (stations.empty()) {
+ return NULL;
}
-// check if the runway frequency is paired
- FGNavRecord* locA = r->ILS();
- FGNavRecord* locB = r->reciprocalRunway()->ILS();
-
- if (!locA || !locB || (locA->get_freq() != locB->get_freq())) {
- return true; // not paired, ok
+// now walk the (sorted) results list to find a usable, in-range navaid
+ SGVec3d acCart(SGVec3d::fromGeod(position));
+ double min_dist
+ = FG_NAV_MAX_RANGE*SG_NM_TO_METER*FG_NAV_MAX_RANGE*SG_NM_TO_METER;
+
+ BOOST_FOREACH(PositionedID id, stations) {
+ FGNavRecordRef station = FGPositioned::loadById<FGNavRecord>(id);
+ if (!filter->pass(station)) {
+ continue;
+ }
+
+ double d2 = distSqr(station->cart(), acCart);
+ if (d2 > min_dist) {
+ // since results are sorted by proximity, as soon as we pass the
+ // distance cutoff we're done - fall out and return NULL
+ break;
+ }
+
+ if (navidUsable(station, position)) {
+ return station;
+ }
}
-
-// okay, both ends have an ILS, and they're paired. We need to select based on
-// aircraft position. What we're going to use is *runway* (not navid) position,
-// ie whichever runway end we are closer too. This makes back-course / missed
-// approach behaviour incorrect, but that's the price we accept.
- double crs = SGGeodesy::courseDeg(aircraft, r->geod());
- double hdgDiff = crs - r->headingDeg();
- SG_NORMALIZE_RANGE(hdgDiff, -180.0, 180.0);
- return (fabs(hdgDiff) < 90.0);
+
+// fell out of the loop, no usable match
+ return NULL;
}
-// Given a point and a list of stations, return the closest one to
-// the specified point.
-FGNavRecord* FGNavList::findNavFromList( const SGGeod &aircraft,
- const nav_list_type &stations )
+FGNavRecordRef FGNavList::findByFreq(double freq, TypeFilter* filter)
{
- FGNavRecord *nav = NULL;
- double d2; // in meters squared
- double min_dist
- = FG_NAV_MAX_RANGE*SG_NM_TO_METER*FG_NAV_MAX_RANGE*SG_NM_TO_METER;
- SGVec3d aircraftCart = SGVec3d::fromGeod(aircraft);
-
- nav_list_const_iterator it;
- nav_list_const_iterator end = stations.end();
- // find the closest station within a sensible range (FG_NAV_MAX_RANGE)
- for ( it = stations.begin(); it != end; ++it ) {
- FGNavRecord *station = *it;
- d2 = distSqr(station->cart(), aircraftCart);
- if ( d2 > min_dist || !navidUsable(station, aircraft)) {
- continue;
- }
-
- min_dist = d2;
- nav = station;
+ flightgear::NavDataCache* cache = flightgear::NavDataCache::instance();
+ int freqKhz = static_cast<int>(freq * 100 + 0.5);
+ PositionedIDVec stations(cache->findNavaidsByFreq(freqKhz, filter));
+ if (stations.empty()) {
+ return NULL;
+ }
+
+ BOOST_FOREACH(PositionedID id, stations) {
+ FGNavRecordRef station = FGPositioned::loadById<FGNavRecord>(id);
+ if (filter->pass(station)) {
+ return station;
}
+ }
- return nav;
+ return NULL;
}
-// Given a frequency, return the first matching station.
-FGNavRecord *FGNavList::findStationByFreq( double freq )
+nav_list_type FGNavList::findAllByFreq( double freq, const SGGeod& position,
+ TypeFilter* filter)
{
- const nav_list_type& stations = navaids[(int)(freq*100.0 + 0.5)];
+ nav_list_type stations;
+
+ flightgear::NavDataCache* cache = flightgear::NavDataCache::instance();
+ int freqKhz = static_cast<int>(freq * 1000 + 0.5);
+ PositionedIDVec ids(cache->findNavaidsByFreq(freqKhz, position, filter));
+
+ BOOST_FOREACH(PositionedID id, ids) {
+ FGNavRecordRef station = FGPositioned::loadById<FGNavRecord>(id);
+ if (!filter->pass(station)) {
+ continue;
+ }
- SG_LOG( SG_INSTR, SG_DEBUG, "findStationByFreq " << freq << " size " << stations.size() );
+ stations.push_back(station);
+ }
+
+ return stations;
+}
- if (!stations.empty()) {
- return stations[0];
+nav_list_type FGNavList::findByIdentAndFreq(const string& ident, const double freq,
+ TypeFilter* filter)
+{
+ nav_list_type reply;
+ int f = (int)(freq*100.0 + 0.5);
+
+ FGPositionedList stations = FGPositioned::findAllWithIdent(ident, filter);
+ BOOST_FOREACH(FGPositionedRef ref, stations) {
+ FGNavRecord* nav = static_cast<FGNavRecord*>(ref.ptr());
+ if ( f <= 0.0 || nav->get_freq() == f) {
+ reply.push_back( nav );
}
- return NULL;
+ }
+
+ return reply;
}
+// Given an Ident and optional frequency and type ,
+// return a list of matching stations sorted by distance to the given position
+nav_list_type FGNavList::findByIdentAndFreq( const SGGeod & position,
+ const std::string& ident, const double freq,
+ TypeFilter* filter)
+{
+ nav_list_type reply = findByIdentAndFreq( ident, freq, filter );
+ NavRecordDistanceSortPredicate sortPredicate( position );
+ std::sort( reply.begin(), reply.end(), sortPredicate );
+ return reply;
+}
// FGTACANList ----------------------------------------------------------------
FGTACANRecord *FGTACANList::findByChannel( const string& channel )
{
const tacan_list_type& stations = ident_channels[channel];
- SG_LOG( SG_INSTR, SG_DEBUG, "findByChannel " << channel<< " size " << stations.size() );
+ SG_LOG( SG_NAVAID, SG_DEBUG, "findByChannel " << channel<< " size " << stations.size() );
if (!stations.empty()) {
return stations[0];
projects / flightgear.git / blobdiff