#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/math/interpolater.hxx>
-#include <simgear/math/point3d.hxx>
// Define a structure containing the global lighting parameters
inline const SGVec4f& sky_color () const { return _sky_color; }
inline const SGVec4f& cloud_color () const { return _cloud_color; }
inline const SGVec4f& adj_fog_color () const { return _adj_fog_color; }
+ inline const SGVec4f& adj_sky_color () const { return _adj_sky_color; }
// Sun related functions