SG_ namespace.

simgear/constants.h

@@ -90,28 +90,28 @@
 // Conversions
 
 // Arc seconds to radians                     // (arcsec*pi)/(3600*180) = rad
-#define ARCSEC_TO_RAD    4.84813681109535993589e-06 
+#define SG_ARCSEC_TO_RAD    4.84813681109535993589e-06 
 
 // Radians to arc seconds                     // (rad*3600*180)/pi = arcsec
-#define RAD_TO_ARCSEC    206264.806247096355156
+#define SG_RAD_TO_ARCSEC    206264.806247096355156
 
 // Feet to Meters
-#define FEET_TO_METER    0.3048
+#define SG_FEET_TO_METER    0.3048
 
 // Meters to Feet
-#define METER_TO_FEET    3.28083989501312335958  
+#define SG_METER_TO_FEET    3.28083989501312335958  
 
 // Meters to Nautical Miles, 1 nm = 6076.11549 feet
-#define METER_TO_NM      0.00053995680
+#define SG_METER_TO_NM      0.00053995680
 
 // Nautical Miles to Meters
-#define NM_TO_METER      1852.0000
+#define SG_NM_TO_METER      1852.0000
 
 // Radians to Nautical Miles, 1 nm = 1/60 of a degree
-#define NM_TO_RAD        0.00029088820866572159
+#define SG_NM_TO_RAD        0.00029088820866572159
 
 // Nautical Miles to Radians
-#define RAD_TO_NM        3437.7467707849392526
+#define SG_RAD_TO_NM        3437.7467707849392526
 
 // For divide by zero avoidance, this will be close enough to zero
 #define SG_EPSILON 0.0000001

simgear/math/polar3d.hxx

@@ -83,7 +83,7 @@ inline Point3D calc_gc_lon_lat( const Point3D& orig, double course,
     // printf("calc_lon_lat()  offset.theta = %.2f offset.dist = %.2f\n",
     //        offset.theta, offset.dist);
 
-    dist *= METER_TO_NM * NM_TO_RAD;
+    dist *= SG_METER_TO_NM * SG_NM_TO_RAD;
     
     result.sety( asin( sin(orig.y()) * cos(dist) + 
 		       cos(orig.y()) * sin(dist) * cos(course) ) );
@@ -154,7 +154,7 @@ inline void calc_gc_course_dist( const Point3D& start, const Point3D& dest,
     }
 
     *course = tc1;
-    *dist = d * RAD_TO_NM * NM_TO_METER;
+    *dist = d * SG_RAD_TO_NM * SG_NM_TO_METER;
 }
 
 #endif // _POLAR_HXX

simgear/metar/MetarReport.cpp

@@ -216,17 +216,17 @@ int CMetarReport::VerticalVisibility() // Meters
 
 int CMetarReport::Ceiling()
 {
-	return FEET_TO_METER * ((Decoded_METAR *)m_DecodedReport)->Ceiling;
+	return SG_FEET_TO_METER * ((Decoded_METAR *)m_DecodedReport)->Ceiling;
 }
 
 int CMetarReport::EstimatedCeiling()
 {
-	return FEET_TO_METER * ((Decoded_METAR *)m_DecodedReport)->Estimated_Ceiling;
+	return SG_FEET_TO_METER * ((Decoded_METAR *)m_DecodedReport)->Estimated_Ceiling;
 }
 
 int CMetarReport::VariableSkyLayerHeight()
 {
-	return FEET_TO_METER * ((Decoded_METAR *)m_DecodedReport)->VrbSkyLayerHgt;
+	return SG_FEET_TO_METER * ((Decoded_METAR *)m_DecodedReport)->VrbSkyLayerHgt;
 }
 
 int CMetarReport::SnowDepthInches()

simgear/metar/MetarStation.cpp

@@ -82,10 +82,10 @@ CMetarStation::CMetarStation(
 	s = t; t = strchr( s, ';' ); *t = 0; t++;
 	double ulongitude = decodeDMS( s );
 	s = t; t = strchr( s, ';' ); *t = 0; t++;
-	double altitude = atoi( s ) * FEET_TO_METER;
+	double altitude = atoi( s ) * SG_FEET_TO_METER;
 	m_altitude = altitude;
 	s = t; t = strchr( s, ';' ); *t = 0; t++;
-	double ualtitude = atoi( s ) * FEET_TO_METER;
+	double ualtitude = atoi( s ) * SG_FEET_TO_METER;
 	Point3D p( longitude, latitude, altitude+SG_EQUATORIAL_RADIUS_M );
 	m_locationPolar = p;
 	m_locationCart = sgPolarToCart3d( p );

simgear/route/waytest.cxx

@@ -14,12 +14,12 @@ int main() {
 
     a1.CourseAndDistance( cur_lon, cur_lat, cur_alt, &course, &distance );
     cout << "Course to " << a1.get_id() << " is " << course << endl;
-    cout << "Distance to " << a1.get_id() << " is " << distance * METER_TO_NM
+    cout << "Distance to " << a1.get_id() << " is " << distance * SG_METER_TO_NM
 	 << endl;
 
     a2.CourseAndDistance( cur_lon, cur_lat, cur_alt, &course, &distance );
     cout << "Course to " << a2.get_id() << " is " << course << endl;
-    cout << "Distance to " << a2.get_id() << " is " << distance * METER_TO_NM
+    cout << "Distance to " << a2.get_id() << " is " << distance * SG_METER_TO_NM
 	 << endl;
     cout << endl;
 
@@ -28,12 +28,12 @@ int main() {
 
     b1.CourseAndDistance( cur_lon, cur_lat, cur_alt, &course, &distance );
     cout << "Course to " << b1.get_id() << " is " << course << endl;
-    cout << "Distance to " << b1.get_id() << " is " << distance * METER_TO_NM
+    cout << "Distance to " << b1.get_id() << " is " << distance * SG_METER_TO_NM
 	 << endl;
 
     b2.CourseAndDistance( cur_lon, cur_lat, cur_alt, &course, &distance );
     cout << "Course to " << b2.get_id() << " is " << course << endl;
-    cout << "Distance to " << b2.get_id() << " is " << distance * METER_TO_NM
+    cout << "Distance to " << b2.get_id() << " is " << distance * SG_METER_TO_NM
 	 << endl;
     cout << endl;