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Allow distinguishing un-towered airports.

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This commit is contained in:
James Turner 2015-11-11 17:03:47 +00:00
parent 5043bf0966
commit e5df6e6d4a
2 changed files with 11 additions and 16 deletions
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10
src/Airports/airport.cxx
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@ -680,6 +680,16 @@ void FGAirport::validateTowerData() const
if (towers.empty()) {
mHasTower = false;
mTowerPosition = geod(); // use airport position
// offset the tower position away from the runway centerline, if
// airport has a single runway. Offset by eight times the runway width,
// an entirely guessed figure.
if (numRunways() <= 2) {
FGRunway* runway = getRunwayByIndex(0);
double hdg = runway->headingDeg() + 90;
mTowerPosition = SGGeodesy::direct(geod(), hdg, runway->widthM() * 8);
}
// increase tower elevation by 20 metres above the field elevation
mTowerPosition.setElevationM(geod().getElevationM() + 20.0);
} else {

17
src/Airports/apt_loader.cxx
View file

@ -159,9 +159,7 @@ public:
double lat = atof( token[1].c_str() );
double lon = atof( token[2].c_str() );
double elev = atof( token[3].c_str() );
tower = SGGeod::fromDegFt(lon, lat, elev + last_apt_elev);
got_tower = true;
tower = SGGeod::fromDegFt(lon, lat, elev + last_apt_elev);
cache->insertTower(currentAirportID, tower);
} else if ( line_id == 19 ) {
// windsock entry (ignore)
@ -207,7 +205,6 @@ private:
double rwy_lon_accum;
double last_rwy_heading;
int rwy_count;
bool got_tower;
string last_apt_id;
double last_apt_elev;
SGGeod tower;
@ -238,17 +235,6 @@ private:
double lat = rwy_lat_accum / (double)rwy_count;
double lon = rwy_lon_accum / (double)rwy_count;
if (!got_tower) {
// tower height hard coded for now...
const float tower_height = 50.0f;
// make a little off the heading for 1 runway airports...
float fudge_lon = fabs(sin(last_rwy_heading * SGD_DEGREES_TO_RADIANS)) * .003f;
float fudge_lat = .003f - fudge_lon;
tower = SGGeod::fromDegFt(lon + fudge_lon, lat + fudge_lat, last_apt_elev + tower_height);
cache->insertTower(currentAirportID, tower);
}
SGGeod pos(SGGeod::fromDegFt(lon, lat, last_apt_elev));
cache->updatePosition(currentAirportID, pos);
@ -264,7 +250,6 @@ private:
finishAirport();
last_apt_elev = elev;
got_tower = false;
string name;
// build the name