//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
# include <config.h>
#endif
-#include <math.h> // fabs()
-#include <stdio.h> // sprintf()
+#include <cmath> // fabs()
+#include <cstdio> // sprintf()
+#include <cstdlib> // atoi()
#include <simgear/compiler.h>
-
#include <simgear/debug/logstream.hxx>
+#include <Main/fg_props.hxx>
#include STL_STRING
#include <map>
// add an entry to the list
-void FGRunwayList::add( const string id, const string rwy_no,
+void FGRunwayList::add( const string& id, const string& rwy_no,
const double longitude, const double latitude,
const double heading, const double length,
const double width,
const double displ_thresh1, const double displ_thresh2,
const double stopway1, const double stopway2,
- const string lighting_flags, const int surface_code,
- const string shoulder_code, const int marking_code,
+ const string& lighting_flags, const int surface_code,
+ const string& shoulder_code, const int marking_code,
const double smoothness, const bool dist_remaining )
{
FGRunway rwy;
rwy._smoothness = smoothness;
rwy._dist_remaining = dist_remaining;
- if ( rwy_no == "xxx" ) {
+ if ( rwy_no[0] == 'x' ) {
rwy._type = "taxiway";
- // don't insert taxiways into the DB for now
} else {
rwy._type = "runway";
- runways.insert(pair<const string, FGRunway>(rwy._id, rwy));
}
+ runways.insert(pair<const string, FGRunway>(rwy._id, rwy));
}
// Return reverse rwy number
// eg 01 -> 19
// 03L -> 21R
-static string GetReverseRunwayNo(string rwyno) {
+static string GetReverseRunwayNo(string& rwyno) {
// cout << "Original rwyno = " << rwyNo << '\n';
+ // Helipads don't have a seperate number per end
+ if(rwyno.size() && (rwyno[0] == 'H' || rwyno[0] == 'h' || rwyno[0] == 'x')) {
+ return rwyno;
+ }
+
// standardize input number
string tmp = rwyno.substr(1, 1);
if (( tmp == "L" || tmp == "R" || tmp == "C" ) || (rwyno.size() == 1)) {
// Return the runway number of the runway closest to a given heading
-string FGRunwayList::search( const string& aptid, const int tgt_hdg ) {
+string FGRunwayList::search( const string& aptid, const int hdg ) {
+ //SG_LOG(SG_GENERAL, SG_ALERT, "searching runway for " << aptid
+ // << " with target heading " << hdg);
+
FGRunway r;
- FGRunway tmp_r;
- string rn;
- double found_dir = 0.0;
-
- if ( !search( aptid, &tmp_r ) ) {
- SG_LOG( SG_GENERAL, SG_ALERT,
- "Failed to find " << aptid << " in database." );
- return "NN";
- }
-
- double diff;
- double min_diff = 360.0;
-
- while ( tmp_r._id == aptid ) {
- // forward direction
- diff = tgt_hdg - tmp_r._heading;
- while ( diff < -180.0 ) { diff += 360.0; }
- while ( diff > 180.0 ) { diff -= 360.0; }
- diff = fabs(diff);
- // SG_LOG( SG_GENERAL, SG_INFO,
- // "Runway " << tmp_r._rwy_no << " heading = "
- // << tmp_r._heading << " diff = " << diff );
- if ( diff < min_diff ) {
- min_diff = diff;
- r = tmp_r;
- found_dir = 0;
- }
-
- // reverse direction
- diff = tgt_hdg - tmp_r._heading - 180.0;
- while ( diff < -180.0 ) { diff += 360.0; }
- while ( diff > 180.0 ) { diff -= 360.0; }
- diff = fabs(diff);
- // SG_LOG( SG_GENERAL, SG_INFO,
- // "Runway -" << tmp_r._rwy_no << " heading = " <<
- // tmp_r._heading + 180.0 <<
- // " diff = " << diff );
- if ( diff < min_diff ) {
- min_diff = diff;
- r = tmp_r;
- found_dir = 180.0;
- }
-
- next( &tmp_r );
+ if (!search(aptid, &r)) {
+ SG_LOG(SG_GENERAL, SG_ALERT, "Failed to find "
+ << aptid << " in database.");
+ return "NN";
}
-
- // SG_LOG( SG_GENERAL, SG_INFO, "closest runway = " << r._rwy_no
- // << " + " << found_dir );
- rn = r._rwy_no;
- if ( found_dir == 180 ) {
- rn = GetReverseRunwayNo(rn);
- }
-
- return rn;
+
+ SGPropertyNode *param = fgGetNode("/sim/airport/runways/search", true);
+ double lenwgt = param->getDoubleValue("length-weight", 0.01);
+ double widwgt = param->getDoubleValue("width-weight", 0.01);
+ double surfwgt = param->getDoubleValue("surface-weight", 10);
+ double devwgt = param->getDoubleValue("deviation-weight", 1);
+
+ FGRunway best;
+ double max = 0.0;
+ bool reversed = false;
+
+ do {
+ if (r._id != aptid)
+ break;
+ if (r._type != "runway")
+ continue;
+
+ int surface = 1;
+ if (r._surface_code == 12 || r._surface_code == 5) // dry lakebed & gravel
+ surface = 2;
+ else if (r._surface_code == 1 || r._surface_code == 2) // asphalt & concrete
+ surface = 3;
+
+ double quality, bad, diff;
+ double good = lenwgt * r._length + widwgt * r._width + surfwgt * surface + 1e-20;
+
+ // this side
+ diff = hdg - r._heading;
+ while (diff < -180)
+ diff += 360;
+ while (diff >= 180)
+ diff -= 360;
+ bad = fabs(devwgt * diff) + 1e-20;
+
+ quality = good / bad;
+ //SG_LOG(SG_GENERAL, SG_ALERT, " runway " << r._rwy_no << " -> " << quality);
+ if (quality > max) {
+ max = quality;
+ best = r;
+ reversed = false;
+ }
+
+ // other side
+ diff = hdg - r._heading - 180;
+ while (diff < -180)
+ diff += 360;
+ while (diff >= 180)
+ diff -= 360;
+ bad = fabs(devwgt * diff) + 1e-20;
+
+ quality = good / bad;
+ //SG_LOG(SG_GENERAL, SG_ALERT, " runway " << GetReverseRunwayNo(r._rwy_no)
+ // << " -> " << quality);
+ if (quality > max) {
+ max = quality;
+ best = r;
+ reversed = true;
+ }
+
+ } while (next(&r));
+
+ return reversed ? GetReverseRunwayNo(best._rwy_no) : best._rwy_no;
}
projects / flightgear.git / blobdiff