Added support for generating SSALS, SSALF, and SSALR approach lighting schemes.
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1 changed files with 306 additions and 1 deletions
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@ -894,7 +894,7 @@ static FGSuperPoly gen_reil( const FGRunway& rwy_info, float alt_m,
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}
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// generate touch down zone lights
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// generate ALSF-II approach lighting scheme
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static superpoly_list gen_alsf_ii( const FGRunway& rwy_info,
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float alt_m, bool recip )
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{
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@ -1229,6 +1229,269 @@ static superpoly_list gen_alsf_ii( const FGRunway& rwy_info,
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}
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// generate SSALS, SSALF, and SSALR approach lighting scheme (kind =
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// S, F, or R)
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static superpoly_list gen_ssalx( const FGRunway& rwy_info,
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float alt_m, const string& kind, bool recip )
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{
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point_list g_lights; g_lights.clear();
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point_list w_lights; w_lights.clear();
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point_list r_lights; r_lights.clear();
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point_list s_lights; s_lights.clear();
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point_list g_normals; g_normals.clear();
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point_list w_normals; w_normals.clear();
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point_list r_normals; r_normals.clear();
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point_list s_normals; s_normals.clear();
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int i, j;
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cout << "gen SSALx lights " << rwy_info.rwy_no << endl;
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Point3D normal = gen_runway_light_vector( rwy_info, 3.0, recip );
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// Generate the threshold lights
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double len = rwy_info.length * SG_FEET_TO_METER;
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int divs = (int)(len / 10.0) + 1;
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// using FGPolygon is a bit innefficient, but that's what the
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// routine returns.
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FGPolygon poly_corners = gen_runway_area_w_expand( rwy_info, 2.0, 2.0 );
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point_list corner;
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for ( i = 0; i < poly_corners.contour_size( 0 ); ++i ) {
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corner.push_back( poly_corners.get_pt( 0, i ) );
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}
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Point3D inc1, inc2;
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Point3D pt1, pt2;
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if ( recip ) {
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inc1 = (corner[0] - corner[1]) / divs;
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inc2 = (corner[3] - corner[2]) / divs;
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pt1 = corner[1];
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pt2 = corner[2];
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} else {
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inc1 = (corner[2] - corner[3]) / divs;
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inc2 = (corner[1] - corner[0]) / divs;
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pt1 = corner[3];
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pt2 = corner[0];
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}
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double dist = rwy_info.length;
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double step = dist / divs;
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g_lights.push_back( pt1 );
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g_normals.push_back( normal );
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r_lights.push_back( pt2 );
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r_normals.push_back( normal );
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dist -= step;
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for ( i = 0; i < divs; ++i ) {
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pt1 += inc1;
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pt2 += inc2;
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g_lights.push_back( pt1 );
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g_normals.push_back( normal );
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r_lights.push_back( pt2 );
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r_normals.push_back( normal );
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dist -= step;
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}
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// Generate long center bar of lights (every 200')
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// determine the start point.
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Point3D ref_save;
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double length_hdg, left_hdg;
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double lon, lat, r;
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if ( recip ) {
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ref_save = (corner[0] + corner[1]) / 2;
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length_hdg = rwy_info.heading + 180.0;
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if ( length_hdg > 360.0 ) { length_hdg -= 360.0; }
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} else {
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ref_save = (corner[2] + corner[3]) / 2;
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length_hdg = rwy_info.heading;
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}
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left_hdg = length_hdg - 90.0;
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if ( left_hdg < 0 ) { left_hdg += 360.0; }
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cout << "length hdg = " << length_hdg
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<< " left heading = " << left_hdg << endl;
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Point3D ref = ref_save;
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for ( i = 0; i < 7; ++i ) {
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// offset 200' downwind
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geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), length_hdg,
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-200 * SG_FEET_TO_METER, &lat, &lon, &r );
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ref = Point3D( lon, lat, 0.0 );
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pt1 = ref;
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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// left 2 side lights
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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3.5 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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3.5 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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pt1 = ref;
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// right 2 side lights
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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-3.5 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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-3.5 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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}
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// Generate -1000' extra horizontal row of lights
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ref = ref_save;
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// offset 1000' downwind
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geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), length_hdg,
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-1000 * SG_FEET_TO_METER, &lat, &lon, &r );
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ref = Point3D( lon, lat, 0.0 );
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pt1 = ref;
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// left 5 side lights
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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15 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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for ( j = 0; j < 4; ++j ) {
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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5 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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}
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pt1 = ref;
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// right 5 side lights
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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-15 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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for ( j = 0; j < 4; ++j ) {
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geo_direct_wgs_84 ( alt_m, pt1.lat(), pt1.lon(), left_hdg,
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-5 * SG_FEET_TO_METER, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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w_lights.push_back( pt1 );
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w_normals.push_back( normal );
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}
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if ( kind == "R" ) {
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// generate 8 rabbit lights
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ref = ref_save;
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// start 1600' downwind
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geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), length_hdg,
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-1600 * SG_FEET_TO_METER, &lat, &lon, &r );
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ref = Point3D( lon, lat, 0.0 );
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for ( i = 0; i < 8; ++i ) {
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s_lights.push_back( ref );
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s_normals.push_back( normal );
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// offset 200' downwind
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geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), length_hdg,
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-200 * SG_FEET_TO_METER, &lat, &lon, &r );
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ref = Point3D( lon, lat, 0.0 );
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}
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} else if ( kind == "F" ) {
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// generate 3 sequenced lights aligned with last 3 light bars
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ref = ref_save;
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// start 1010' downwind
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geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), length_hdg,
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-1010 * SG_FEET_TO_METER, &lat, &lon, &r );
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ref = Point3D( lon, lat, 0.0 );
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for ( i = 0; i < 3; ++i ) {
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s_lights.push_back( ref );
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s_normals.push_back( normal );
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// offset 200' downwind
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geo_direct_wgs_84 ( alt_m, ref.lat(), ref.lon(), length_hdg,
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-200 * SG_FEET_TO_METER, &lat, &lon, &r );
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ref = Point3D( lon, lat, 0.0 );
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}
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}
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FGPolygon lights_poly; lights_poly.erase();
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FGPolygon normals_poly; normals_poly.erase();
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lights_poly.add_contour( g_lights, false );
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normals_poly.add_contour( g_normals, false );
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FGSuperPoly green;
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green.set_poly( lights_poly );
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green.set_normals( normals_poly );
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green.set_material( "RWY_GREEN_LIGHTS" );
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lights_poly.erase();
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normals_poly.erase();
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lights_poly.add_contour( r_lights, false );
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normals_poly.add_contour( r_normals, false );
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FGSuperPoly red;
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red.set_poly( lights_poly );
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red.set_normals( normals_poly );
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red.set_material( "RWY_RED_LIGHTS" );
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lights_poly.erase();
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normals_poly.erase();
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lights_poly.add_contour( w_lights, false );
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normals_poly.add_contour( w_normals, false );
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FGSuperPoly white;
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white.set_poly( lights_poly );
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white.set_normals( normals_poly );
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white.set_material( "RWY_WHITE_LIGHTS" );
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superpoly_list result; result.clear();
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result.push_back( green );
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result.push_back( red );
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result.push_back( white );
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if ( s_lights.size() > 0 ) {
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lights_poly.erase();
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normals_poly.erase();
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lights_poly.add_contour( s_lights, false );
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normals_poly.add_contour( s_normals, false );
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FGSuperPoly sequenced;
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sequenced.set_poly( lights_poly );
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sequenced.set_normals( normals_poly );
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sequenced.set_material( "RWY_SEQUENCED_LIGHTS" );
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result.push_back( sequenced );
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}
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return result;
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}
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// top level runway light generator
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void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
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superpoly_list &lights ) {
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@ -1327,6 +1590,48 @@ void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
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}
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}
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// SSALS
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if ( rwy_info.end1_flags.substr(3,1) == "S" ) {
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superpoly_list s = gen_ssalx( rwy_info, alt_m, "S", false );
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for ( i = 0; i < s.size(); ++i ) {
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lights.push_back( s[i] );
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}
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}
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if ( rwy_info.end2_flags.substr(3,1) == "S" ) {
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superpoly_list s = gen_ssalx( rwy_info, alt_m, "S", true );
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for ( i = 0; i < s.size(); ++i ) {
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lights.push_back( s[i] );
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}
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}
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// SSALF
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if ( rwy_info.end1_flags.substr(3,1) == "Q" ) {
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superpoly_list s = gen_ssalx( rwy_info, alt_m, "F", false );
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for ( i = 0; i < s.size(); ++i ) {
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lights.push_back( s[i] );
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}
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}
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if ( rwy_info.end2_flags.substr(3,1) == "Q" ) {
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superpoly_list s = gen_ssalx( rwy_info, alt_m, "F", true );
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for ( i = 0; i < s.size(); ++i ) {
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lights.push_back( s[i] );
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}
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}
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// SSALR
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if ( rwy_info.end1_flags.substr(3,1) == "R" ) {
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superpoly_list s = gen_ssalx( rwy_info, alt_m, "R", false );
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for ( i = 0; i < s.size(); ++i ) {
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lights.push_back( s[i] );
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}
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}
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if ( rwy_info.end2_flags.substr(3,1) == "R" ) {
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superpoly_list s = gen_ssalx( rwy_info, alt_m, "R", true );
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for ( i = 0; i < s.size(); ++i ) {
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lights.push_back( s[i] );
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}
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}
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// Many aproach lighting systems define the threshold lighting
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// needed, but for those that don't (i.e. REIL) make threshold
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// lighting
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