Allow geocentric distance computations to return radians.

[simgear.git] / simgear / math / SGGeoc.hxx

diff --git a/simgear/math/SGGeoc.hxx b/simgear/math/SGGeoc.hxx
index a835deb17cb6ec1f5f55e6fe24e0ce03d2d8e87b..e8f1b0d1b3d4a6471b5b9d705f28497d40a29b32 100644 (file)
--- a/simgear/math/SGGeoc.hxx
+++ b/simgear/math/SGGeoc.hxx
@@ -27,12 +27,6 @@ class SGGeoc {
 public:
   /// Default constructor, initializes the instance to lat = lon = lat = 0
   SGGeoc(void);
-  /// Initialize from a cartesian vector assumed to be in meters
-  /// Note that this conversion is relatively expensive to compute
-  SGGeoc(const SGVec3<double>& cart);
-  /// Initialize from a geodetic position
-  /// Note that this conversion is relatively expensive to compute
-  SGGeoc(const SGGeod& geod);
 
   /// Factory from angular values in radians and radius in ft
   static SGGeoc fromRadFt(double lon, double lat, double radius);
@@ -42,6 +36,13 @@ public:
   static SGGeoc fromRadM(double lon, double lat, double radius);
   /// Factory from angular values in degrees and radius in m
   static SGGeoc fromDegM(double lon, double lat, double radius);
+  /// Factory to convert position from a cartesian position assumed to be
+  /// in wgs84 measured in meters
+  /// Note that this conversion is relatively expensive to compute
+  static SGGeoc fromCart(const SGVec3<double>& cart);
+  /// Factory to convert position from a geodetic position
+  /// Note that this conversion is relatively expensive to compute
+  static SGGeoc fromGeod(const SGGeod& geod);
 
   /// Return the geocentric longitude in radians
   double getLongitudeRad(void) const;
@@ -73,6 +74,11 @@ public:
   /// Set the geocentric radius from the argument given in feet
   void setRadiusFt(double radius);
 
+  SGGeoc advanceRadM(double course, double distance) const;
+  static double courseRad(const SGGeoc& from, const SGGeoc& to);
+  static double courseDeg(const SGGeoc& from, const SGGeoc& to);
+  static double distanceM(const SGGeoc& from, const SGGeoc& to);
+
 private:
   /// This one is private since construction is not unique if you do
   /// not know the units of the arguments, use the factory methods for
@@ -103,20 +109,6 @@ SGGeoc::SGGeoc(double lon, double lat, double radius) :
 {
 }
 
-inline
-SGGeoc::SGGeoc(const SGVec3<double>& cart)
-{
-  SGGeodesy::SGCartToGeoc(cart, *this);
-}
-
-inline
-SGGeoc::SGGeoc(const SGGeod& geod)
-{
-  SGVec3<double> cart;
-  SGGeodesy::SGGeodToCart(geod, cart);
-  SGGeodesy::SGCartToGeoc(cart, *this);
-}
-
 inline
 SGGeoc
 SGGeoc::fromRadFt(double lon, double lat, double radius)
@@ -165,6 +157,26 @@ SGGeoc::fromDegM(double lon, double lat, double radius)
 #endif
 }
 
+inline
+SGGeoc
+SGGeoc::fromCart(const SGVec3<double>& cart)
+{
+  SGGeoc geoc;
+  SGGeodesy::SGCartToGeoc(cart, geoc);
+  return geoc;
+}
+
+inline
+SGGeoc
+SGGeoc::fromGeod(const SGGeod& geod)
+{
+  SGVec3<double> cart;
+  SGGeodesy::SGGeodToCart(geod, cart);
+  SGGeoc geoc;
+  SGGeodesy::SGCartToGeoc(cart, geoc);
+  return geoc;
+}
+
 inline
 double
 SGGeoc::getLongitudeRad(void) const
@@ -194,7 +206,7 @@ SGGeoc::getLongitudeDeg(void) const
 #ifdef SG_GEOC_NATIVE_DEGREE
   return _lon;
 #else
-  return _lon*SGD_DEGREES_TO_RADIANS;
+  return _lon*SGD_RADIANS_TO_DEGREES;
 #endif
 }
 
@@ -205,7 +217,7 @@ SGGeoc::setLongitudeDeg(double lon)
 #ifdef SG_GEOC_NATIVE_DEGREE
   _lon = lon;
 #else
-  _lon = lon*SGD_RADIANS_TO_DEGREES;
+  _lon = lon*SGD_DEGREES_TO_RADIANS;
 #endif
 }
 
@@ -238,7 +250,7 @@ SGGeoc::getLatitudeDeg(void) const
 #ifdef SG_GEOC_NATIVE_DEGREE
   return _lat;
 #else
-  return _lat*SGD_DEGREES_TO_RADIANS;
+  return _lat*SGD_RADIANS_TO_DEGREES;
 #endif
 }
 
@@ -249,7 +261,7 @@ SGGeoc::setLatitudeDeg(double lat)
 #ifdef SG_GEOC_NATIVE_DEGREE
   _lat = lat;
 #else
-  _lat = lat*SGD_RADIANS_TO_DEGREES;
+  _lat = lat*SGD_DEGREES_TO_RADIANS;
 #endif
 }
 
@@ -281,6 +293,36 @@ SGGeoc::setRadiusFt(double radius)
   _radius = radius*SG_FEET_TO_METER;
 }
 
+inline
+SGGeoc
+SGGeoc::advanceRadM(double course, double distance) const
+{
+  SGGeoc result;
+  SGGeodesy::advanceRadM(*this, course, distance, result);
+  return result;
+}
+
+inline
+double
+SGGeoc::courseRad(const SGGeoc& from, const SGGeoc& to)
+{
+  return SGGeodesy::courseRad(from, to);
+}
+
+inline
+double
+SGGeoc::courseDeg(const SGGeoc& from, const SGGeoc& to)
+{
+  return SGMiscd::rad2deg(courseRad(from, to));
+}
+
+inline
+double
+SGGeoc::distanceM(const SGGeoc& from, const SGGeoc& to)
+{
+  return SGGeodesy::distanceM(from, to);
+}
+
 /// Output to an ostream
 template<typename char_type, typename traits_type>
 inline