From 7368effd9e9c4f72c32a7bc34ac545582cdd1c79 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Tue, 22 Oct 2002 03:56:12 +0000
Subject: [PATCH] First crack at generating taxiway lights (with a normal
vector of up.)
---
src/Airports/GenAirports/build.cxx | 7 +-
src/Airports/GenAirports/lights.cxx | 163 +++++++++++++++++++++++++++-
src/Airports/GenAirports/lights.hxx | 3 +
3 files changed, 170 insertions(+), 3 deletions(-)
diff --git a/src/Airports/GenAirports/build.cxx b/src/Airports/GenAirports/build.cxx
index bd22799a..d41f37f2 100644
--- a/src/Airports/GenAirports/build.cxx
+++ b/src/Airports/GenAirports/build.cxx
@@ -563,12 +563,17 @@ void build_airport( string airport_raw, float alt_m, string_list& runways_raw,
return;
}
- // 5th pass: generate runway/taxiway lights
+ // 5th pass: generate runway lights
superpoly_list rwy_lights; rwy_lights.clear();
for ( i = 0; i < (int)runways.size(); ++i ) {
gen_runway_lights( runways[i], alt_m, rwy_lights );
}
+ // 6th pass: generate all taxiway lights
+ for ( i = 0; i < (int)taxiways.size(); ++i ) {
+ gen_taxiway_lights( taxiways[i], alt_m, rwy_lights );
+ }
+
// generate convex hull (no longer)
// FGPolygon hull = convex_hull(apt_pts);
diff --git a/src/Airports/GenAirports/lights.cxx b/src/Airports/GenAirports/lights.cxx
index dcdd7cb7..991aa541 100644
--- a/src/Airports/GenAirports/lights.cxx
+++ b/src/Airports/GenAirports/lights.cxx
@@ -53,7 +53,7 @@ static Point3D gen_runway_light_vector( const FGRunway& rwy_info,
} else {
end2 = (corner[0] + corner[1]) / 2.0;
end1 = (corner[2] + corner[3]) / 2.0;
- }
+ }
Point3D cart1 = sgGeodToCart( end1 * SG_DEGREES_TO_RADIANS );
Point3D cart2 = sgGeodToCart( end2 * SG_DEGREES_TO_RADIANS );
cout << "cart1 = " << cart1 << " cart2 = " << cart2 << endl;
@@ -255,6 +255,89 @@ static superpoly_list gen_runway_edge_lights( const FGRunway& rwy_info,
}
+// generate taxiway edge lighting
+// 100 meters spacing or the next number down that divides evenly.
+static superpoly_list gen_taxiway_edge_lights( const FGRunway& rwy_info,
+ const string& kind, bool recip )
+{
+ point_list b_lights; b_lights.clear();
+ point_list b_normals; b_normals.clear();
+ int i;
+
+ double len = rwy_info.length * SG_FEET_TO_METER;
+ int divs;
+ if ( len > 100.0 ) {
+ // for lengths of 300' or more, max spacing is 200'
+ divs = (int)(len / 70.0) + 1;
+ } else {
+ // for lengths <= 300', max spacing = 100'
+ divs = (int)(len / 35.0) + 1;
+ }
+
+ // using FGPolygon is a bit innefficient, but that's what the
+ // routine returns.
+ FGPolygon poly_corners = gen_runway_area_w_expand( rwy_info, 2.0, 2.0 );
+
+ point_list corner;
+ for ( i = 0; i < poly_corners.contour_size( 0 ); ++i ) {
+ corner.push_back( poly_corners.get_pt( 0, i ) );
+ }
+
+ Point3D inc1, inc2;
+ Point3D pt1, pt2;
+
+ if ( recip ) {
+ inc1 = (corner[3] - corner[0]) / divs;
+ inc2 = (corner[2] - corner[1]) / divs;
+ pt1 = corner[0];
+ pt2 = corner[1];
+ } else {
+ inc1 = (corner[0] - corner[3]) / divs;
+ inc2 = (corner[1] - corner[2]) / divs;
+ pt1 = corner[3];
+ pt2 = corner[2];
+ }
+
+ double dist = rwy_info.length;
+ double step = dist / divs;
+
+ Point3D up = sgGeodToCart( corner[0] * SG_DEGREES_TO_RADIANS );
+ double length = up.distance3D( Point3D(0.0) );
+ up = up / length;
+
+ b_lights.push_back( pt1 );
+ b_normals.push_back( up );
+ b_lights.push_back( pt2 );
+ b_normals.push_back( up );
+ dist -= step;
+
+ for ( i = 0; i < divs; ++i ) {
+ pt1 += inc1;
+ pt2 += inc2;
+ b_lights.push_back( pt1 );
+ b_normals.push_back( up );
+ b_lights.push_back( pt2 );
+ b_normals.push_back( up );
+ }
+
+ FGPolygon lights_poly; lights_poly.erase();
+ FGPolygon normals_poly; normals_poly.erase();
+ lights_poly.add_contour( b_lights, false );
+ normals_poly.add_contour( b_normals, false );
+
+ FGSuperPoly blue;
+ blue.set_poly( lights_poly );
+ blue.set_normals( normals_poly );
+ blue.set_material( "RWY_BLUE_TAXIWAY_LIGHTS" );
+
+ superpoly_list result; result.clear();
+
+ result.push_back( blue );
+
+ return result;
+}
+
+
// generate threshold lights for a 3 degree approach
static superpoly_list gen_runway_threshold_lights( const FGRunway& rwy_info,
const string& kind,
@@ -2046,7 +2129,14 @@ void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
// Please send me documentation for this configuration
////////////////////////////////////////////////////////////
- // LDIN
+ ////////////////////////////////////////////////////////////
+ // NOT IMPLIMENTED:
+ //
+ // code: "F" LDIN
+ //
+ // This configuration is airport specific and no additional placement
+ // data is provided in our database
+ ////////////////////////////////////////////////////////////
// MALS
if ( rwy_info.end1_flags.substr(3,1) == "G" ) {
@@ -2076,6 +2166,14 @@ void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
}
}
+ ////////////////////////////////////////////////////////////
+ // NOT IMPLIMENTED:
+ //
+ // code: "I" NSTD Non standard
+ //
+ // This is also likely airport specific
+ ////////////////////////////////////////////////////////////
+
// MALSR
if ( rwy_info.end1_flags.substr(3,1) == "J" ) {
superpoly_list s = gen_malsx( rwy_info, alt_m, "R", false );
@@ -2090,6 +2188,28 @@ void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
}
}
+ ////////////////////////////////////////////////////////////
+ // NOT IMPLIMENTED:
+ //
+ // code: "K" MIL OVRN Something military
+ //
+ // No clue ...
+ ////////////////////////////////////////////////////////////
+
+ ////////////////////////////////////////////////////////////
+ // NOT IMPLIMENTED:
+ //
+ // code: "L" ODALS Omni-directional approach light system
+ //
+ ////////////////////////////////////////////////////////////
+
+ ////////////////////////////////////////////////////////////
+ // NOT IMPLIMENTED:
+ //
+ // code: "M" RAIL Runway alignment indicator lights (icw other systems)
+ //
+ ////////////////////////////////////////////////////////////
+
// SALS (Essentially ALSF-1 without the lead in rabbit lights, and
// a shorter center bar)
@@ -2168,3 +2288,42 @@ void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
}
}
}
+
+
+// top level taxiway light generator
+void gen_taxiway_lights( const FGRunway& taxiway_info, float alt_m,
+ superpoly_list &lights ) {
+
+ cout << "gen taxiway lights " << taxiway_info.rwy_no << " "
+ << taxiway_info.end1_flags << " " << taxiway_info.end2_flags << endl;;
+
+ unsigned int i;
+
+ // Centerline lighting
+ if ( taxiway_info.surface_flags.substr(0,1) == "Y" ) {
+ // forward direction
+ superpoly_list s;
+ s = gen_runway_center_line_lights( taxiway_info, false );
+ for ( i = 0; i < s.size(); ++i ) {
+ lights.push_back( s[i] );
+ }
+
+ // reverse direction
+ s = gen_runway_center_line_lights( taxiway_info, true );
+ for ( i = 0; i < s.size(); ++i ) {
+ lights.push_back( s[i] );
+ }
+ }
+
+ // Make edge lighting
+ string edge_type = taxiway_info.surface_flags.substr(2,1);
+ if ( taxiway_info.surface_flags.substr(2,1) == "B" ) {
+ // forward direction
+ superpoly_list s;
+ s = gen_taxiway_edge_lights( taxiway_info, "B", false );
+ for ( i = 0; i < s.size(); ++i ) {
+ lights.push_back( s[i] );
+ }
+ }
+
+}
diff --git a/src/Airports/GenAirports/lights.hxx b/src/Airports/GenAirports/lights.hxx
index a21148a4..382c2f58 100644
--- a/src/Airports/GenAirports/lights.hxx
+++ b/src/Airports/GenAirports/lights.hxx
@@ -37,5 +37,8 @@
void gen_runway_lights( const FGRunway& rwy_info, float alt_m,
superpoly_list &lights );
+// generate taxiway lighting
+void gen_taxiway_lights( const FGRunway& taxiway_info, float alt_m,
+ superpoly_list &lights );
#endif // _RWY_LIGHTS_HXX