-// runways.hxx -- a simple class to manage airport runway info
+// runways.cxx -- a simple class to manage airport runway info
//
// Written by Curtis Olson, started August 2000.
//
#ifdef SG_HAVE_STD_INCLUDES
# include <istream>
-#elif defined( SG_HAVE_NATIVE_SGI_COMPILERS )
-# include <iostream.h>
-#elif defined( __BORLANDC__ )
+#elif defined( __BORLANDC__ ) || defined (__APPLE__)
# include <iostream>
#else
# include <istream.h>
#endif
-#if ! defined( SG_HAVE_NATIVE_SGI_COMPILERS )
SG_USING_STD(istream);
-#endif
inline istream&
operator >> ( istream& in, FGRunway& a )
}
+// Return reverse rwy number
+// eg 01 -> 19
+// 03L -> 21R
+static string GetReverseRunwayNo(string rwyno) {
+ // cout << "Original rwyno = " << rwyNo << '\n';
+
+ // standardize input number
+ string tmp = rwyno.substr(1, 1);
+ if (( tmp == "L" || tmp == "R" || tmp == "C" ) || (rwyno.size() == 1)) {
+ tmp = rwyno;
+ rwyno = "0" + tmp;
+ SG_LOG( SG_GENERAL, SG_INFO, "Standardising rwy number from " << tmp
+ << " to " << rwyno );
+ }
+
+ char buf[4];
+ int rn = atoi(rwyno.substr(0,2).c_str());
+ rn += 18;
+ while(rn > 36) {
+ rn -= 36;
+ }
+ sprintf(buf, "%02i", rn);
+ if(rwyno.size() == 3) {
+ if(rwyno.substr(2,1) == "L") {
+ buf[2] = 'R';
+ buf[3] = '\0';
+ } else if (rwyno.substr(2,1) == "R") {
+ buf[2] = 'L';
+ buf[3] = '\0';
+ } else if (rwyno.substr(2,1) == "C") {
+ buf[2] = 'C';
+ buf[3] = '\0';
+ } else {
+ SG_LOG(SG_GENERAL, SG_ALERT, "Unknown runway code "
+ << rwyno << " passed to GetReverseRunwayNo(...)");
+ }
+ }
+ return((string)buf);
+}
+
+
// search for the specified apt id
bool FGRunways::search( const string& aptid, FGRunway* r ) {
c4_StringProp pID ("ID");
// search for the specified apt id and runway no
bool FGRunways::search( const string& aptid, const string& rwyno, FGRunway* r )
{
+ string runwayno = rwyno;
c4_StringProp pID ("ID");
c4_StringProp pRwy ("Rwy");
c4_FloatProp pLon ("Longitude");
if ( index == -1 ) {
return false;
}
+
+ // standardize input number
+ string tmp = runwayno.substr(1, 1);
+ if (( tmp == "L" || tmp == "R" || tmp == "C" ) || (runwayno.size() == 1)) {
+ tmp = runwayno;
+ runwayno = "0" + tmp;
+ SG_LOG(SG_GENERAL, SG_INFO, "Standardising rwy number from " << tmp
+ << " to " << runwayno );
+ }
c4_RowRef row = vRunway->GetAt(index);
string rowid = (const char *) pID(row);
while ( rowid == aptid ) {
next_index = index + 1;
- if ( rowrwyno == rwyno ) {
+ if ( rowrwyno == runwayno ) {
r->id = (const char *) pID(row);
r->rwy_no = (const char *) pRwy(row);
r->lon = (double) pLon(row);
return true;
}
+
+ // Search again with the other-end runway number
+ // Remember we have to munge the heading and rwy_no results if this one matches
+ rowrwyno = GetReverseRunwayNo(rowrwyno);
+ // cout << "New rowrwyno = " << rowrwyno << '\n';
+ if ( rowrwyno == runwayno ) {
+ r->id = (const char *) pID(row);
+ r->rwy_no = rowrwyno;
+ r->lon = (double) pLon(row);
+ r->lat = (double) pLat(row);
+ r->heading = (double) pHdg(row) + 180.0;
+ r->length = (double) pLen(row);
+ r->width = (double) pWid(row);
+ r->surface_flags = (const char *) pSurf(row);
+ r->end1_flags = (const char *) pEnd2(row);
+ r->end2_flags = (const char *) pEnd1(row);
+ // I've swapped the end flags as well
+
+ return true;
+ }
index++;
- c4_RowRef row = vRunway->GetAt(index);
- string rowid = (const char *) pID(row);
- string rowrwyno = (const char *) pRwy(row);
+ row = vRunway->GetAt(index);
+ rowid = (const char *) pID(row);
+ rowrwyno = (const char *) pRwy(row);
}
return false;
bool FGRunways::search( const string& aptid, const int tgt_hdg,
FGRunway* runway )
{
- FGRunway r;
- double found_dir = 0.0;
-
- if ( !search( aptid, &r ) ) {
- SG_LOG( SG_GENERAL, SG_ALERT,
- "Failed to find " << aptid << " in database." );
- return false;
- }
-
- double diff;
- double min_diff = 360.0;
-
- while ( r.id == aptid ) {
- // forward direction
- diff = tgt_hdg - 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 " << r.rwy_no << " heading = " << r.heading <<
- // " diff = " << diff );
- if ( diff < min_diff ) {
- min_diff = diff;
- runway = &r;
- found_dir = 0;
- }
-
- // reverse direction
- diff = tgt_hdg - 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 -" << r.rwy_no << " heading = " <<
- // r.heading + 180.0 <<
- // " diff = " << diff );
- if ( diff < min_diff ) {
- min_diff = diff;
- runway = &r;
- found_dir = 180.0;
- }
-
- next( &r );
- }
-
- // SG_LOG( SG_GENERAL, SG_INFO, "closest runway = " << runway->rwy_no
- // << " + " << found_dir );
-
- double heading = runway->heading + found_dir;
- while ( heading >= 360.0 ) { heading -= 360.0; }
- runway->heading = heading;
-
- return true;
+ string rwyNo = search(aptid, tgt_hdg);
+ return(rwyNo == "NN" ? false : search(aptid, rwyNo, runway));
}
// Return the runway number of the runway closest to a given heading
string FGRunways::search( const string& aptid, const int tgt_hdg ) {
FGRunway r;
+ FGRunway tmp_r;
string rn;
double found_dir = 0.0;
- if ( !search( aptid, &r ) ) {
+ 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 ( r.id == aptid ) {
+ while ( tmp_r.id == aptid ) {
+ r = tmp_r;
+
// forward direction
diff = tgt_hdg - r.heading;
while ( diff < -180.0 ) { diff += 360.0; }
found_dir = 180.0;
}
- next( &r );
+ next( &tmp_r );
}
// SG_LOG( SG_GENERAL, SG_INFO, "closest runway = " << r.rwy_no
// << " + " << found_dir );
- // rn = r.rwy_no;
+ rn = r.rwy_no;
// cout << "In search, rn = " << rn << endl;
if ( found_dir == 180 ) {
- int irn = atoi(rn.c_str());
- irn += 18;
- if ( irn > 36 ) {
- irn -= 36;
- }
- char buf[4]; // 2 chars + string terminator + 1 for safety
- sprintf(buf, "%i", irn);
- rn = buf;
+ rn = GetReverseRunwayNo(rn);
+ //cout << "New rn = " << rn << '\n';
}
return rn;
projects / flightgear.git / blobdiff