Convert threshold lights to SGGeod and simplify the routine
This commit is contained in:
Christian Schmitt
parent
5e796d2dd5
commit
1c8dbead04
1 changed files with 59 additions and 124 deletions
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@ -205,7 +205,7 @@ superpoly_list Runway::gen_runway_edge_lights( bool recip )
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return result;
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}
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// generate threshold lights for a 3 degree approach
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// generate threshold lights for displaced/normal runways and with/without light bars
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superpoly_list Runway::gen_runway_threshold_lights( const int kind, bool recip )
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{
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point_list g_lights; g_lights.clear();
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@ -214,158 +214,93 @@ superpoly_list Runway::gen_runway_threshold_lights( const int kind, bool recip )
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point_list r_normals; r_normals.clear();
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int i;
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point_list corner = gen_corners( 2.0, rwy.threshold[0], rwy.threshold[1], 2.0 );
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// determine the start point.
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Point3D ref1, ref2;
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double length_hdg, left_hdg;
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double lon, lat, r;
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SGGeod ref1, ref2;
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double length_hdg;
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if ( recip ) {
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ref1 = corner[0];
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ref2 = corner[1];
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length_hdg = rwy.heading + 180.0;
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if ( length_hdg > 360.0 ) { length_hdg -= 360.0; }
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length_hdg = SGMiscd::normalizePeriodic(0, 360, rwy.heading + 180);
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ref1 = SGGeodesy::direct(GetEnd(), length_hdg, rwy.threshold[get_thresh0(recip)] - 1);
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ref2 = GetEnd();
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} else {
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ref1 = corner[2];
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ref2 = corner[3];
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length_hdg = rwy.heading;
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ref1 = SGGeodesy::direct(GetStart(), length_hdg, rwy.threshold[get_thresh0(recip)] - 1);
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ref2 = GetStart();
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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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double left_hdg = SGMiscd::normalizePeriodic(0, 360, length_hdg - 90.0);
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Point3D normal1 = gen_runway_light_vector( 3.0, recip );
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Point3D normal2 = gen_runway_light_vector( 3.0, !recip );
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// offset 1m downwind
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geo_direct_wgs_84 ( ref1.lat(), ref1.lon(), length_hdg,
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-1.0, &lat, &lon, &r );
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ref1 = Point3D( lon, lat, 0.0 );
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geo_direct_wgs_84 ( ref2.lat(), ref2.lon(), length_hdg,
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-1.0, &lat, &lon, &r );
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ref2 = Point3D( lon, lat, 0.0 );
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int divs = (int)(rwy.width + 4) / 3.0;
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double step = (rwy.width + 4) / divs;
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SGGeod pt1, pt2;
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double offset = 2 + rwy.width * 0.5;
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int divs = (int)(rwy.width / 3.0) + 1;
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Point3D inc;
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Point3D pt1 = ref1;
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Point3D pt2 = ref2;
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// We're at the threshold:
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if ( GetsThreshold(recip) )
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{
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if ( GetsThreshold(recip) ) {
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SGGeod thresh1 = pt1 = SGGeodesy::direct(ref1, left_hdg, offset);
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SGGeod thresh2 = SGGeodesy::direct(ref1, left_hdg, -offset);
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// four lights for each side
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for ( i = 0; i < 4; ++i ) {
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g_lights.push_back( pt1 );
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g_lights.push_back( Point3D::fromSGGeod(thresh1) );
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g_normals.push_back( normal1 );
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g_lights.push_back( pt2 );
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g_lights.push_back( Point3D::fromSGGeod(thresh2) );
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g_normals.push_back( normal1 );
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// offset 3m towards outside
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geo_direct_wgs_84 ( pt1.lat(), pt1.lon(), left_hdg,
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3, &lat, &lon, &r );
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pt1 = Point3D( lon, lat, 0.0 );
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geo_direct_wgs_84 ( pt2.lat(), pt2.lon(), left_hdg,
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-3, &lat, &lon, &r );
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pt2 = Point3D( lon, lat, 0.0 );
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thresh1 = SGGeodesy::direct(thresh1, left_hdg, 3);
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thresh2 = SGGeodesy::direct(thresh2, left_hdg, -3);
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}
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if ( kind )
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{
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// Add a green threshold lights bar in between the four lights
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Point3D pt1 = ref1;
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inc = (ref2 - ref1) / divs;
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pt1 += inc;
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g_lights.push_back( pt1 );
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} else {
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pt1 = SGGeodesy::direct(ref2, left_hdg, offset);
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}
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if ( kind ) {
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// Add a green and red threshold lights bar
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SGGeod redbar = SGGeodesy::direct(ref2, left_hdg, offset);
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for ( i = 0; i < divs + 1; ++i ) {
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g_lights.push_back( Point3D::fromSGGeod(pt1) );
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g_normals.push_back( normal1 );
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for ( i = 0; i < divs-2; ++i ) {
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pt1 += inc;
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g_lights.push_back( pt1 );
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g_normals.push_back( normal1 );
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}
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r_lights.push_back( Point3D::fromSGGeod(redbar) );
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r_normals.push_back( normal2 );
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pt1 = SGGeodesy::direct(pt1, left_hdg, -step);
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redbar = SGGeodesy::direct(redbar, left_hdg, -step);
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}
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}
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// Now create the lights at the front of the runway
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pt1 = SGGeodesy::direct(ref2, left_hdg, offset);
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pt2 = SGGeodesy::direct(ref2, left_hdg, -offset);
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// Now step to the front of the runway
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geo_direct_wgs_84 ( ref1.lat(), ref1.lon(), length_hdg,
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-rwy.threshold[get_thresh0(recip)], &lat, &lon, &r );
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ref1 = Point3D( lon, lat, 0.0 );
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geo_direct_wgs_84 ( ref2.lat(), ref2.lon(), length_hdg,
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-rwy.threshold[get_thresh0(recip)], &lat, &lon, &r );
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ref2 = Point3D( lon, lat, 0.0 );
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Point3D front1 = ref1;
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Point3D front2 = ref2;
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point_list tmp; tmp.clear();
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point_list tmp_norm; tmp_norm.clear();
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if ( !kind )// Create groups of four lights in front of the displaced threshold
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{
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for ( i = 0; i < 4; ++i ) {
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if (GetsThreshold(recip))
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{
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r_lights.push_back( front1 );
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r_normals.push_back( normal1 );
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// Create groups of four lights in front of the displaced threshold
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for ( i = 0; i < 4; ++i ) {
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tmp.push_back( Point3D::fromSGGeod(pt1) );
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tmp_norm.push_back( normal1 );
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tmp.push_back( Point3D::fromSGGeod(pt2) );
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tmp_norm.push_back( normal1 );
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r_lights.push_back( front2 );
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r_normals.push_back( normal1 );
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} else {
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g_lights.push_back( front1 );
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g_normals.push_back( normal1 );
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g_lights.push_back( front2 );
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g_normals.push_back( normal1 );
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}
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r_lights.push_back( front1 );
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if (!kind) {
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r_lights.push_back( Point3D::fromSGGeod(pt1) );
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r_normals.push_back( normal2 );
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r_lights.push_back( front2 );
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r_lights.push_back( Point3D::fromSGGeod(pt2) );
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r_normals.push_back( normal2 );
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// offset 3m towards center
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geo_direct_wgs_84 ( front1.lat(), front1.lon(), left_hdg,
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-3, &lat, &lon, &r );
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front1 = Point3D( lon, lat, 0.0 );
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geo_direct_wgs_84 ( front2.lat(), front2.lon(), left_hdg,
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3, &lat, &lon, &r );
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front2 = Point3D( lon, lat, 0.0 );
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}
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} else {
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// Create the red (green) threshold lights bar
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Point3D pt1 = ref1;
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inc = (ref2 - ref1) / divs;
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if (!GetsThreshold(recip))
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{
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g_lights.push_back( pt1 );
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g_normals.push_back( normal1 );
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}
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r_lights.push_back( pt1 );
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r_normals.push_back( normal2 );
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for ( i = 0; i < divs; ++i ) {
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pt1 += inc;
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r_lights.push_back( pt1 );
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r_normals.push_back( normal2 );
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if (!GetsThreshold(recip))
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{
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g_lights.push_back( pt1 );
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g_normals.push_back( normal1 );
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}
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}
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if (GetsThreshold(recip))
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{ // In case of a threshold there is no bar at the front of the runway
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for ( i = 0; i < 4; ++i ) {
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r_lights.push_back( ref1 );
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r_normals.push_back( normal1 );
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r_lights.push_back( ref2 );
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r_normals.push_back( normal1 );
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// offset 3m towards center
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geo_direct_wgs_84 ( ref1.lat(), ref1.lon(), left_hdg,
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-3, &lat, &lon, &r );
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ref1 = Point3D( lon, lat, 0.0 );
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geo_direct_wgs_84 ( ref2.lat(), ref2.lon(), left_hdg,
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3, &lat, &lon, &r );
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ref2 = Point3D( lon, lat, 0.0 );
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}
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}
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// offset 3m towards center
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pt1 = SGGeodesy::direct(pt1, left_hdg, -3);
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pt2 = SGGeodesy::direct(pt2, left_hdg, 3);
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}
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if (GetsThreshold(recip) ) {
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r_lights.insert(r_lights.end(), tmp.begin(), tmp.end());
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r_normals.insert(r_normals.end(), tmp_norm.begin(), tmp_norm.end());
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} else if (!kind) {
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g_lights.insert(g_lights.end(), tmp.begin(), tmp.end());
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g_normals.insert(g_normals.end(), tmp_norm.begin(), tmp_norm.end());
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}
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TGPolygon lights_poly; lights_poly.erase();
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