fly/terragear
1
0
Fork 0
Code Activity

Added support for PAPI, and oh yeah, definitely smoking crack on the

Browse source 
reciprical runway heading calculation.
This commit is contained in:
curt 2002-10-09 16:40:12 +00:00
parent 21153db715
commit 66bacda3ba
1 changed files with 103 additions and 2 deletions

105
src/Airports/GenAirports/lights.cxx
View file

@ -211,7 +211,7 @@ static FGSuperPoly gen_runway_edge_lights( const FGRunway& rwy_info,
}
// generate a simple 2 bar VASI
// generate a simple 2 bar VASI for a 3 degree approach
static FGSuperPoly gen_vasi( const FGRunway& rwy_info, float alt_m,
bool recip )
{
@ -346,12 +346,113 @@ static FGSuperPoly gen_vasi( const FGRunway& rwy_info, float alt_m,
}
// generate a simple PAPI for a 3 degree approach
static FGSuperPoly gen_papi( const FGRunway& rwy_info, float alt_m,
bool recip )
{
point_list lights; lights.clear();
point_list normals; normals.clear();
int i;
cout << "gen papi " << rwy_info.rwy_no << endl;
Point3D normal;
// using FGPolygon is a bit innefficient, but that's what the
// routine returns.
FGPolygon poly_corners = gen_runway_area_w_expand( rwy_info, 0.0, 0.0 );
point_list corner;
for ( i = 0; i < poly_corners.contour_size( 0 ); ++i ) {
corner.push_back( poly_corners.get_pt( 0, i ) );
}
// determine the start point.
Point3D ref;
double length_hdg, left_hdg;
double lon, lat, r;
if ( recip ) {
ref = corner[0];
length_hdg = rwy_info.heading + 180.0;
if ( length_hdg > 360.0 ) { length_hdg -= 360.0; }
} else {
ref = corner[2];
length_hdg = rwy_info.heading;
}
left_hdg = length_hdg - 90.0;
if ( left_hdg < 0 ) { left_hdg += 360.0; }
cout << "length hdg = " << length_hdg
<< " left heading = " << left_hdg << endl;
// offset 950' upwind
geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), length_hdg,
950 * SG_FEET_TO_METER, &lat, &lon, &r );
ref = Point3D( lon, lat, 0.0 );
// offset 50' left
geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), left_hdg,
50 * SG_FEET_TO_METER, &lat, &lon, &r );
ref = Point3D( lon, lat, 0.0 );
// unit1
Point3D pt1 = ref;
lights.push_back( pt1 );
normal = gen_runway_light_vector( rwy_info, 3.5, recip );
normals.push_back( normal );
// unit2
geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
30 * SG_FEET_TO_METER, &lat, &lon, &r );
pt1 = Point3D( lon, lat, 0.0 );
lights.push_back( pt1 );
normal = gen_runway_light_vector( rwy_info, 3.167, recip );
normals.push_back( normal );
// unit3
geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
30 * SG_FEET_TO_METER, &lat, &lon, &r );
pt1 = Point3D( lon, lat, 0.0 );
lights.push_back( pt1 );
normal = gen_runway_light_vector( rwy_info, 2.833, recip );
normals.push_back( normal );
// unit4
geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
30 * SG_FEET_TO_METER, &lat, &lon, &r );
pt1 = Point3D( lon, lat, 0.0 );
lights.push_back( pt1 );
normal = gen_runway_light_vector( rwy_info, 2.5, recip );
normals.push_back( normal );
FGPolygon lights_poly; lights_poly.erase();
FGPolygon normals_poly; normals_poly.erase();
lights_poly.add_contour( lights, false );
normals_poly.add_contour( normals, false );
FGSuperPoly result;
result.set_poly( lights_poly );
result.set_normals( normals_poly );
result.set_material( "RWY_VASI_LIGHTS" );
return result;
}
void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
superpoly_list &lights ) {
cout << "gen runway lights " << rwy_info.rwy_no << " " << rwy_info.end1_flags << " " << rwy_info.end2_flags << endl;;
// Approach lighting
// PAPI lighting
if ( rwy_info.end1_flags.substr(2,1) == "P" ) {
FGSuperPoly s = gen_papi( rwy_info, alt_m, false );
lights.push_back( s );
}
if ( rwy_info.end2_flags.substr(2,1) == "P" ) {
FGSuperPoly s = gen_papi( rwy_info, alt_m, true );
lights.push_back( s );
}
// VASI lighting
if ( rwy_info.end1_flags.substr(2,1) == "V" ) {
FGSuperPoly s = gen_vasi( rwy_info, alt_m, false );
lights.push_back( s );