-
-
-// query the database for the specified fix, lon and lat are in
-// degrees, elev is in meters
-bool FGFixList::query( const string& ident, FGFix *fix ) {
- fix_map_const_iterator it = fixlist.find(ident);
- if ( it != fixlist.end() ) {
- *fix = it->second;
- return true;
- } else {
- return false;
- }
-}
-
-
-// query the database for the specified fix, lon and lat are in
-// degrees, elev is in meters
-bool FGFixList::query_and_offset( const string& ident, double lon, double lat,
- double elev, FGFix *fix, double *heading,
- double *dist )
-{
- pair<fix_map_const_iterator, fix_map_const_iterator> range = fixlist.equal_range(ident);
-
- if (range.first == range.second) {
- return false;
- }
-
- double min_s = -1.0;
- for (fix_map_const_iterator current = range.first; current != range.second; ++current) {
- double az1, az2, s;
- geo_inverse_wgs_84( elev, lat, lon,
- current->second.get_lat(), current->second.get_lon(),
- &az1, &az2, &s );
- // cout << " dist = " << s << endl;
- if (min_s < 0 || s < min_s) {
- *heading = az2;
- *dist = s;
- min_s = s;
- *fix = current->second;
- }
- }
-
- return true;
-}
-
-const FGFix* FGFixList::search(const string& ident)
-{
- fix_map_iterator itr = fixlist.find(ident);
- if (itr == fixlist.end()) {
- return NULL;
- }
-
- return &itr->second;
-}
-
-class orderingFunctor
-{
-public:
- orderingFunctor(FGIdentOrdering* aOrder) :
- mOrdering(aOrder)
- { assert(aOrder); }
-
- bool operator()(const fix_map_type::value_type& aA, const std::string& aB) const
- {
- return mOrdering->compare(aA.first,aB);
- }
-
-private:
- FGIdentOrdering* mOrdering;
-};
-
-const FGFix* FGFixList::findFirstByIdent( const string& ident, FGIdentOrdering* aOrder)
-{
- fix_map_iterator itr;
- if (aOrder) {
- orderingFunctor func(aOrder);
- itr = std::lower_bound(fixlist.begin(),fixlist.end(), ident, func);
- } else {
- itr = fixlist.lower_bound(ident);
- }
-
- if (itr == fixlist.end()) {
- return NULL;
- }
-
- return &itr->second;
-}