More tweaks as I work through the airport database.

src/Airports/GenAirports/build.cxx

@@ -52,6 +52,7 @@
 #include <Polygon/superpoly.hxx>
 #include <Triangulate/trieles.hxx>
 
+#include "build.hxx"
 #include "convex_hull.hxx"
 #include "output.hxx"
 #include "point2d.hxx"
@@ -691,13 +692,13 @@ static void gen_runway_section( const FGRunway& rwy_info,
     // that by nudging the areas a bit bigger so we don't end up with
     // polygon slivers.
     if ( startw_pct > 0.0 || endw_pct < 1.0 ) {
-	startl_pct -= 80 * FG_EPSILON;
+	startl_pct -= nudge * FG_EPSILON;
-	endl_pct += 80 * FG_EPSILON;
+	endl_pct += nudge * FG_EPSILON;
 	if ( startw_pct > 0.0 ) {
-	    startw_pct -= 80 * FG_EPSILON;
+	    startw_pct -= nudge * FG_EPSILON;
 	}
 	if ( endw_pct < 1.0 ) {
-	    endw_pct += 80 * FG_EPSILON;
+	    endw_pct += nudge * FG_EPSILON;
 	}
     }
 

src/Airports/GenAirports/build.hxx

@@ -32,6 +32,9 @@
 #include "point2d.hxx"
 
 
+extern int nudge;
+
+
 // build 3d airport
 void build_airport( string airport, string_list& runways_raw,
 		    const string& root );

src/Airports/GenAirports/main.cxx

@@ -48,6 +48,9 @@
 #include "convex_hull.hxx"
 
 
+int nudge = 10;
+
+
 // reads the apt_full file and extracts and processes the individual
 // airport records
 int main( int argc, char **argv ) {
@@ -58,14 +61,43 @@ int main( int argc, char **argv ) {
 
     fglog().setLogLevels( FG_ALL, FG_DEBUG );
 
-    if ( argc != 3 ) {
+    // parse arguments
+    string work_dir = "";
+    string input_file;
+    int arg_pos;
+    for (arg_pos = 1; arg_pos < argc; arg_pos++) {
+        string arg = argv[arg_pos];
+        if ( arg.find("--work=") == 0 ) {
+            work_dir = arg.substr(7);
+	} else if ( arg.find("--input=") == 0 ) {
+	    input_file = arg.substr(8);
+ 	} else if ( arg.find("--nudge=") == 0 ) {
+	    nudge = atoi( arg.substr(8).c_str() );
+	} else {
+	    FG_LOG( FG_GENERAL, FG_ALERT, 
+		    "Usage " << argv[0] << " --input=<apt_file> "
+		    << "--work=<work_dir> [ --nudge=n ]" );
+	    exit(-1);
+	}
+    }
+
+    cout << "Input file = " << input_file << endl;
+    cout << "Work directory = " << work_dir << endl;
+    cout << "Nudge = " << nudge << endl;
+
+    if ( work_dir == "" ) {
 	FG_LOG( FG_GENERAL, FG_ALERT, 
-		"Usage " << argv[0] << " <apt_file> <work_dir>" );
+		"Error: no work directory specified." );
+	exit(-1);
+    }
+
+    if ( input_file == "" ) {
+	FG_LOG( FG_GENERAL, FG_ALERT, 
+		"Error: no input file." );
 	exit(-1);
     }
 
     // make work directory
-    string work_dir = argv[2];
     string command = "mkdir -p " + work_dir;
     system( command.c_str() );
 
@@ -73,9 +105,9 @@ int main( int argc, char **argv ) {
     string counter_file = work_dir + "/poly_counter";
     poly_index_init( counter_file );
 
-    fg_gzifstream in( argv[1] );
+    fg_gzifstream in( input_file );
     if ( !in ) {
-        FG_LOG( FG_GENERAL, FG_ALERT, "Cannot open file: " << argv[1] );
+        FG_LOG( FG_GENERAL, FG_ALERT, "Cannot open file: " << input_file );
         exit(-1);
     }
 
@@ -100,7 +132,7 @@ int main( int argc, char **argv ) {
 	    if ( last_airport.length() ) {
 		// process previous record
 		// process_airport(last_airport, runways_list, argv[2]);
-		build_airport(last_airport, runways_list, argv[2]);
+		build_airport(last_airport, runways_list, work_dir);
 	    }
 
 	    // clear runway list for start of next airport
@@ -123,7 +155,7 @@ int main( int argc, char **argv ) {
     if ( last_airport.length() ) {
 	// process previous record
 	// process_airport(last_airport, runways_list, argv[2]);
-	build_airport(last_airport, runways_list, argv[2]);
+	build_airport(last_airport, runways_list, work_dir);
     }
 
     return 0;