// Return true if the nav record matches the type
static bool isTypeMatch(const FGNavRecord* n, fg_nav_types type) {
switch(type) {
- case FG_NAV_ANY: return(true);
- case FG_NAV_VOR: return(n->get_type() == 3);
- case FG_NAV_NDB: return(n->get_type() == 2);
- case FG_NAV_ILS: return(n->get_type() == 4); // Note - very simplified, only matches loc as part of full ILS.
- default: return false;
+ case FG_NAV_ANY: return(true);
+ case FG_NAV_VOR: return(n->get_type() == 3);
+ case FG_NAV_NDB: return(n->get_type() == 2);
+ case FG_NAV_ILS: return(n->get_type() == 4); // Note - very simplified, only matches loc as part of full ILS.
+ default: return false;
}
}
-// Constructor
-FGNavList::FGNavList( void ) {
-}
-FGTACANList::FGTACANList( void ){
+// FGNavList ------------------------------------------------------------------
+
+FGNavList::FGNavList( void )
+{
}
-// Destructor
-FGNavList::~FGNavList( void ) {
+FGNavList::~FGNavList( void )
+{
}
-FGTACANList::~FGTACANList( void ){
-}
// load the navaids and build the map
-bool FGNavList::init() {
-
+bool FGNavList::init()
+{
// FIXME: leaves all the individual navaid entries leaked
navaids.erase( navaids.begin(), navaids.end() );
navaids_by_tile.erase( navaids_by_tile.begin(), navaids_by_tile.end() );
return true;
}
-bool FGTACANList::init() {
-
- return true;
-}
// real add a marker beacon
static void real_add( nav_map_type &navmap, const int master_index,
// front end for add a marker beacon
-static void tile_add( nav_map_type &navmap, FGNavRecord *n ) {
+static void tile_add( nav_map_type &navmap, FGNavRecord *n )
+{
double diff;
double lon = n->get_lon();
int lonidx = (int)lon;
diff = lon - (double)lonidx;
if ( (lon < 0.0) && (fabs(diff) > SG_EPSILON) ) {
- lonidx -= 1;
+ lonidx -= 1;
}
double lonfrac = lon - (double)lonidx;
lonidx += 180;
int latidx = (int)lat;
diff = lat - (double)latidx;
if ( (lat < 0.0) && (fabs(diff) > SG_EPSILON) ) {
- latidx -= 1;
+ latidx -= 1;
}
double latfrac = lat - (double)latidx;
latidx += 90;
// there are 8 cases since there are 8 adjacent tiles
if ( lonfrac < 0.2 ) {
- real_add( navmap, master_index - 1000, n );
- if ( latfrac < 0.2 ) {
- real_add( navmap, master_index - 1000 - 1, n );
- } else if ( latfrac > 0.8 ) {
- real_add( navmap, master_index - 1000 + 1, n );
- }
+ real_add( navmap, master_index - 1000, n );
+ if ( latfrac < 0.2 ) {
+ real_add( navmap, master_index - 1000 - 1, n );
+ } else if ( latfrac > 0.8 ) {
+ real_add( navmap, master_index - 1000 + 1, n );
+ }
} else if ( lonfrac > 0.8 ) {
- real_add( navmap, master_index + 1000, n );
- if ( latfrac < 0.2 ) {
- real_add( navmap, master_index + 1000 - 1, n );
- } else if ( latfrac > 0.8 ) {
- real_add( navmap, master_index + 1000 + 1, n );
- }
+ real_add( navmap, master_index + 1000, n );
+ if ( latfrac < 0.2 ) {
+ real_add( navmap, master_index + 1000 - 1, n );
+ } else if ( latfrac > 0.8 ) {
+ real_add( navmap, master_index + 1000 + 1, n );
+ }
} else if ( latfrac < 0.2 ) {
- real_add( navmap, master_index - 1, n );
+ real_add( navmap, master_index - 1, n );
} else if ( latfrac > 0.8 ) {
- real_add( navmap, master_index + 1, n );
+ real_add( navmap, master_index + 1, n );
}
}
-
// add an entry to the lists
-bool FGNavList::add( FGNavRecord *n ) {
+bool FGNavList::add( FGNavRecord *n )
+{
navaids[n->get_freq()].push_back(n);
ident_navaids[n->get_ident()].push_back(n);
tile_add( navaids_by_tile, n );
return true;
}
-// add an entry to the lists
-bool FGTACANList::add( FGTACANRecord *c ) {
- ident_channels[c->get_channel()].push_back(c);
- return true;
-}
FGNavRecord *FGNavList::findByFreq( double freq, double lon, double lat, double elev )
{
{
nav_list_type n2;
n2.clear();
-
+
int iType;
if(type == FG_NAV_VOR) iType = 3;
else if(type == FG_NAV_NDB) iType = 2;
else return(n2);
-
+
nav_ident_map_iterator it;
if(exact) {
- it = ident_navaids.find(ident);
+ it = ident_navaids.find(ident);
} else {
- bool typeMatch = false;
- int safety_count = 0;
- it = ident_navaids.lower_bound(ident);
- while(!typeMatch) {
- nav_list_type n0 = it->second;
- // local copy, so we should be able to do anything with n0.
- // Remove the types that don't match request.
- for(nav_list_iterator it0 = n0.begin(); it0 != n0.end();) {
- FGNavRecord* nv = *it0;
- if(nv->get_type() == iType) {
- typeMatch = true;
- ++it0;
- } else {
- it0 = n0.erase(it0);
- }
- }
- if(typeMatch) {
- return(n0);
- }
- if(it == ident_navaids.begin()) {
- // We didn't find a match before reaching the beginning of the map
- n0.clear();
- return(n0);
- }
- safety_count++;
- if(safety_count == 1000000) {
- SG_LOG(SG_INSTR, SG_ALERT,
- "safety_count triggered exit from while loop in findFirstByIdent!");
- break;
- }
- ++it;
- if(it == ident_navaids.end()) {
- n0.clear();
- return(n0);
- }
- }
+ bool typeMatch = false;
+ int safety_count = 0;
+ it = ident_navaids.lower_bound(ident);
+ while(!typeMatch) {
+ nav_list_type n0 = it->second;
+ // local copy, so we should be able to do anything with n0.
+ // Remove the types that don't match request.
+ for(nav_list_iterator it0 = n0.begin(); it0 != n0.end();) {
+ FGNavRecord* nv = *it0;
+ if(nv->get_type() == iType) {
+ typeMatch = true;
+ ++it0;
+ } else {
+ it0 = n0.erase(it0);
+ }
+ }
+ if(typeMatch) {
+ return(n0);
+ }
+ if(it == ident_navaids.begin()) {
+ // We didn't find a match before reaching the beginning of the map
+ n0.clear();
+ return(n0);
+ }
+ safety_count++;
+ if(safety_count == 1000000) {
+ SG_LOG(SG_INSTR, SG_ALERT,
+ "safety_count triggered exit from while loop in findFirstByIdent!");
+ break;
+ }
+ ++it;
+ if(it == ident_navaids.end()) {
+ n0.clear();
+ return(n0);
+ }
+ }
}
if(it == ident_navaids.end()) {
- n2.clear();
- return(n2);
+ n2.clear();
+ return(n2);
} else {
- nav_list_type n1 = it->second;
- n2.clear();
- for(nav_list_iterator it2 = n1.begin(); it2 != n1.end(); ++it2) {
- FGNavRecord* nv = *it2;
- if(nv->get_type() == iType) n2.push_back(nv);
- }
- return(n2);
+ nav_list_type n1 = it->second;
+ n2.clear();
+ for(nav_list_iterator it2 = n1.begin(); it2 != n1.end(); ++it2) {
+ FGNavRecord* nv = *it2;
+ if(nv->get_type() == iType) n2.push_back(nv);
+ }
+ return(n2);
}
}
// Given a point and a list of stations, return the closest one to the
// specified point.
-FGNavRecord *FGNavList::findNavFromList( const SGVec3d &aircraft,
+FGNavRecord *FGNavList::findNavFromList( const SGVec3d &aircraft,
const nav_list_type &stations )
{
FGNavRecord *nav = NULL;
// find the closest station within a sensible range (FG_NAV_MAX_RANGE)
for ( unsigned int i = 0; i < stations.size(); ++i ) {
- // cout << "testing " << current->get_ident() << endl;
+ // cout << "testing " << current->get_ident() << endl;
d2 = distSqr(stations[i]->get_cart(), aircraft);
- // cout << " dist = " << sqrt(d)
- // << " range = " << current->get_range() * SG_NM_TO_METER
+ // cout << " dist = " << sqrt(d)
+ // << " range = " << current->get_range() * SG_NM_TO_METER
// << endl;
// LOC, ILS, GS, and DME antenna's could potentially be
// placed from each other. (Do the expensive check only for
// directional atennas and only when there is a chance it is
// the closest station.)
- if ( d2 < min_dist &&
+ if ( d2 < min_dist &&
(stations[i]->get_type() == 4 || stations[i]->get_type() == 5 ||
stations[i]->get_type() == 6 || stations[i]->get_type() == 12 ||
stations[i]->get_type() == 13) )
int lonidx = (int)lon_deg;
diff = lon_deg - (double)lonidx;
if ( (lon_deg < 0.0) && (fabs(diff) > SG_EPSILON) ) {
- lonidx -= 1;
+ lonidx -= 1;
}
lonidx += 180;
int latidx = (int)lat_deg;
diff = lat_deg - (double)latidx;
if ( (lat_deg < 0.0) && (fabs(diff) > SG_EPSILON) ) {
- latidx -= 1;
+ latidx -= 1;
}
latidx += 90;
double min_dist = 999999999.0;
for ( ; current != last ; ++current ) {
- if(isTypeMatch(*current, type)) {
- // cout << " testing " << (*current)->get_ident() << endl;
-
+ if(isTypeMatch(*current, type)) {
+ // cout << " testing " << (*current)->get_ident() << endl;
+
double d = distSqr((*current)->get_cart(), aircraft);
- // cout << " distance = " << d << " ("
- // << FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
- // * FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
- // << ")" << endl;
-
- // cout << " range = " << sqrt(d) << endl;
-
- if ( d < min_dist ) {
- min_dist = d;
- result = (*current);
- }
- }
+ // cout << " distance = " << d << " ("
+ // << FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
+ // * FG_ILS_DEFAULT_RANGE * SG_NM_TO_METER
+ // << ")" << endl;
+
+ // cout << " range = " << sqrt(d) << endl;
+
+ if ( d < min_dist ) {
+ min_dist = d;
+ result = (*current);
+ }
+ }
}
// cout << "lon = " << lon << " lat = " << lat
return result;
}
-// Given a TACAN Channel return the first matching frequency
-FGTACANRecord *FGTACANList::findByChannel( const string& channel )
+// Given a frequency, return the first matching station.
+FGNavRecord *FGNavList::findStationByFreq( double freq )
{
- const tacan_list_type& stations = ident_channels[channel];
- SG_LOG( SG_INSTR, SG_DEBUG, "findByChannel " << channel<< " size " << stations.size() );
-
+ const nav_list_type& stations = navaids[(int)(freq*100.0 + 0.5)];
+
+ SG_LOG( SG_INSTR, SG_DEBUG, "findStationByFreq " << freq << " size " << stations.size() );
+
if (stations.size()) {
return stations[0];
- }
+ }
return NULL;
}
-// Given a frequency, return the first matching station.
-FGNavRecord *FGNavList::findStationByFreq( double freq )
+
+
+// FGTACANList ----------------------------------------------------------------
+
+FGTACANList::FGTACANList( void )
{
- const nav_list_type& stations = navaids[(int)(freq*100.0 + 0.5)];
-
- SG_LOG( SG_INSTR, SG_DEBUG, "findStationByFreq " << freq << " size " << stations.size() );
-
+}
+
+
+FGTACANList::~FGTACANList( void )
+{
+}
+
+
+bool FGTACANList::init()
+{
+ return true;
+}
+
+
+// add an entry to the lists
+bool FGTACANList::add( FGTACANRecord *c )
+{
+ ident_channels[c->get_channel()].push_back(c);
+ return true;
+}
+
+
+// Given a TACAN Channel return the first matching frequency
+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() );
+
if (stations.size()) {
return stations[0];
- }
+ }
return NULL;
}
+
+
SG_USING_STD(string);
-// convenience types
+
+// FGNavList ------------------------------------------------------------------
+
+
typedef vector < FGNavRecord* > nav_list_type;
-typedef vector < FGTACANRecord* > tacan_list_type;
typedef nav_list_type::iterator nav_list_iterator;
typedef nav_list_type::const_iterator nav_list_const_iterator;
typedef map < int, nav_list_type > nav_map_type;
-typedef map < int, tacan_list_type > tacan_map_type;
typedef nav_map_type::iterator nav_map_iterator;
typedef nav_map_type::const_iterator nav_map_const_iterator;
typedef map < string, nav_list_type > nav_ident_map_type;
typedef nav_ident_map_type::iterator nav_ident_map_iterator;
-typedef map < string, tacan_list_type > tacan_ident_map_type;
+
class FGNavList {
nav_map_type navaids;
nav_map_type navaids_by_tile;
nav_ident_map_type ident_navaids;
-
+
// Given a point and a list of stations, return the closest one to
// the specified point.
- FGNavRecord *findNavFromList( const SGVec3d &aircraft,
+ FGNavRecord *findNavFromList( const SGVec3d &aircraft,
const nav_list_type &stations );
-
+
public:
FGNavList();
* that there will be multiple stations with matching frequencies
* so a position must be specified. Lon and lat are in radians,
* elev is in meters.
- */
+ */
FGNavRecord *findByFreq( double freq, double lon, double lat, double elev );
// locate closest item in the DB matching the requested ident
FGNavRecord *findByIdent( const char* ident, const double lon, const double lat );
-
- // Find items of requested type with closest exact or subsequent ident
+
+ // Find items of requested type with closest exact or subsequent ident
// (by ASCII code value) to that supplied.
// Supplying true for exact forces only exact matches to be returned (similar to above function)
// Returns an empty list if no match found - calling function should check for this!
inline const nav_map_type& get_navaids() const { return navaids; }
};
+
+
+
+// FGTACANList ----------------------------------------------------------------
+
+
+
+typedef vector < FGTACANRecord* > tacan_list_type;
+typedef map < int, tacan_list_type > tacan_map_type;
+typedef map < string, tacan_list_type > tacan_ident_map_type;
+
+
class FGTACANList {
tacan_list_type channellist;
tacan_map_type channels;
tacan_ident_map_type ident_channels;
-
+
public:
FGTACANList();
// add an entry
bool add( FGTACANRecord *r );
-
- // Given a TACAN Channel, return the appropriate frequency.
+
+ // Given a TACAN Channel, return the appropriate frequency.
FGTACANRecord *findByChannel( const string& channel );
-
+
};
#endif // _FG_NAVLIST_HXX
projects / flightgear.git / commitdiff