water runway support

src/Airports/GenAirports850/build.cxx

@@ -236,20 +236,24 @@ static void build_runway( const TGRunway& rwy_info,
 	    material = "grass_rwy";
     } else if ( surface_code == 4 /* Dirt */
 	    || surface_code == 5 /* Gravel */
-	    || surface_code == 12 /* Dry lakebed */ ) {
+	    || surface_code == 12 /* Dry lakebed */
+	    || surface_code == 13 /* Water */
+	    || surface_code == 14 /* Snow/Ice */
+	    || surface_code == 15 /* Transparent */) {
 	    material = "dirt_rwy";
     } else {
         SG_LOG(SG_GENERAL, SG_WARN, "surface_code = " << surface_code);
 	throw sg_exception("unknown runway type!");
     }
-if ( rwy_info.type == 102 ){
+
-SG_LOG(SG_GENERAL, SG_INFO, "Generating Helipad" );
+    if ( rwy_info.type == 102 ){
-gen_heli( rwy_info, alt_m, material,
+	SG_LOG(SG_GENERAL, SG_INFO, "Generating Helipad" );
+	gen_heli( rwy_info, alt_m, material,
 		  rwy_polys, texparams, accum );
-}
+    }
 
     SG_LOG(SG_GENERAL, SG_DEBUG, "marking code = " << rwy_info.marking_code1 << " / " << rwy_info.marking_code2);
-if ( rwy_info.type == 100 ){
+    if ( rwy_info.type == 100 ){
 	if ( surface_code == 3 /* Turf/Grass */
 	    || surface_code == 4 /* Dirt */
 	    || surface_code == 5 /* Gravel */ )
@@ -275,7 +279,7 @@ if ( rwy_info.type == 100 ){
 		rwy_info.marking_code1 );
 		throw sg_exception("Unknown runway code in build.cxx:build_airport()");
 	    }
-}
+    }
 
     TGPolygon base, safe_base;
     if (rwy_info.type == 100){
@@ -303,6 +307,7 @@ if ( rwy_info.type == 100 ){
 // build 3d airport
 void build_airport( string airport_id, float alt_m,
                     string_list& runways_raw,
+                    string_list& water_raw,
                     string_list& beacons_raw,
                     string_list& towers_raw,
                     string_list& windsocks_raw,
@@ -459,6 +464,38 @@ void build_airport( string airport_id, float alt_m,
     SGBucket b( apt_lon / (double)rwy_count, apt_lat / (double)rwy_count );
     SG_LOG(SG_GENERAL, SG_INFO, b.gen_base_path() << "/" << b.gen_index_str());
 
+    point_list water_rw; water_rw.clear();
+    for ( i = 0; i < (int)water_raw.size(); ++i ) {
+	string water_str = water_raw[i];
+        vector<string> token = simgear::strutils::split( water_str );
+
+	//first runway end coordinates
+	double lat_1 = atof( token[4].c_str() );
+	double lon_1 = atof( token[5].c_str() );
+	SGGeod pos_1(SGGeod::fromDegFt(lon_1, lat_1, 0.0));
+
+	//opposite end coordinates
+	double lat_2 = atof( token[7].c_str() );
+	double lon_2 = atof( token[8].c_str() );
+	SGGeod pos_2(SGGeod::fromDegFt(lon_2, lat_2, 0.0));
+
+	//runway centerpoint
+	Point3D rw_center = Point3D( (lon_1 + lon_2) / 2 , (lat_1 + lat_2) / 2, 0);
+
+	double heading = (SGGeodesy::courseDeg(pos_1, pos_2));
+
+	double length = (SGGeodesy::distanceM(pos_1, pos_2));
+	double width = atoi( token[1].c_str() );
+
+	TGPolygon rw_outline = gen_wgs84_area(rw_center, length, 0, 0, width,
+					      heading, 0, false);
+
+	for ( i = 0; i < rw_outline.contour_size( 0 ); ++i ) {
+	water_rw.push_back( rw_outline.get_pt( 0, i ) );
+	}
+
+    }
+
     point_list beacons; beacons.clear();
     for ( i = 0; i < (int)beacons_raw.size(); ++i ) {
 	string beacon_str = beacons_raw[i];
@@ -1050,6 +1087,8 @@ void build_airport( string airport_id, float alt_m,
 
     SG_LOG(SG_GENERAL, SG_DEBUG, "Done with base calc_elevations()");
 
+    SG_LOG(SG_GENERAL, SG_INFO, "Computing beacon node elevations");
+    point_list water_buoys_nodes = calc_elevations( apt_surf, water_rw, 0.0 );
     SG_LOG(SG_GENERAL, SG_INFO, "Computing beacon node elevations");
     point_list beacon_nodes = calc_elevations( apt_surf, beacons, 0.0 );
     SG_LOG(SG_GENERAL, SG_INFO, "Computing tower node elevations");
@@ -1338,6 +1377,13 @@ void build_airport( string airport_id, float alt_m,
     // write out airport object reference
     write_index( objpath, b, name );
 
+    // write out water runway buoys references
+    for ( i = 0; i < (int)water_buoys_nodes.size(); ++i ) {
+        write_index_shared( objpath, b, water_buoys_nodes[i],
+                            "Models/Airport/water_rw_buoy.ac",
+                            0.0 );
+    }
+
     // write out beacon references
     for ( i = 0; i < (int)beacon_nodes.size(); ++i ) {
         write_index_shared( objpath, b, beacon_nodes[i],

src/Airports/GenAirports850/build.hxx

@@ -36,6 +36,7 @@
 // build 3d airport
 void build_airport( string airport_id, float alt_m,
                     string_list& runways_raw,
+		    string_list& water_raw,
                     string_list& beacons_raw,
                     string_list& towers_raw,
                     string_list& windsocks_raw,

src/Airports/GenAirports850/main.cxx

@@ -248,6 +248,7 @@ int main( int argc, char **argv ) {
     }
 
     string_list runways_list;
+    string_list water_rw_list;
     string_list beacon_list;
     string_list tower_list;
     string_list windsock_list;
@@ -302,9 +303,11 @@ int main( int argc, char **argv ) {
                 if ( runways_list.size() ) {
                     vector<string> rwy_token
                         = simgear::strutils::split( runways_list[0] );
+		    if ( token[0] == "100" ){
                     rwy = token[8];
                     lat = atof( token[9].c_str() );
                     lon = atof( token[10].c_str() );
+		    }
 
                     if ( airport_id.length() && airport_id == last_apt_id ) {
                         ready_to_go = true;
@@ -331,6 +334,7 @@ int main( int argc, char **argv ) {
                                     build_airport( last_apt_id,
                                                    elev * SG_FEET_TO_METER,
                                                    runways_list,
+						   water_rw_list,
                                                    beacon_list,
                                                    tower_list,
                                                    windsock_list,
@@ -364,13 +368,18 @@ int main( int argc, char **argv ) {
 
             // clear runway list for start of next airport
             runways_list.clear();
+	    water_rw_list.clear();
             beacon_list.clear();
             tower_list.clear();
             windsock_list.clear();
 	    light_list.clear();
         } else if ( token[0] == "100" || token[0] == "102") {
-            // runway entry
+            // runway entry (Land or heli)
             runways_list.push_back(line);
+	} else if ( token[0] == "101" ) {
+            // Water runway. Here we don't have to create any textures.
+            // Only place some buoys
+            water_rw_list.push_back(line);
         } else if ( token[0] == "18" ) {
             // beacon entry
             beacon_list.push_back(line);
@@ -395,7 +404,9 @@ int main( int argc, char **argv ) {
 	} else if ( token[0] == "00" ) {
 		// ??
 	} else if ( token[0] >= "110" ) {
-		//ignore lines for now
+		//ignore taxiways for now
+	} else if ( token[0] == "10" ) {
+		//ignore old taxiways for now
         } else {
             SG_LOG( SG_GENERAL, SG_ALERT, 
                     "Unknown line in file: " << line );
@@ -438,6 +449,7 @@ int main( int argc, char **argv ) {
                     if( is_in_range( runways_list, min_lat, max_lat, min_lon, max_lon ) ) {
                         build_airport( last_apt_id, elev * SG_FEET_TO_METER,
                                        runways_list,
+				       water_rw_list,
                                        beacon_list,
                                        tower_list,
                                        windsock_list,