// current longitude latitude
double longitude;
double latitude;
+ double altitude_m;
double last_longitude;
double last_latitude;
int update( SGLocation *location, double visibility_meters,
sgdVec3 abs_pos_vector );
- int updateCurrentElevAtPos(sgdVec3 abs_pos_vector, Point3D center );
+ int updateCurrentElevAtPos( sgdVec3 abs_pos_vector, double altitude_m,
+ Point3D center );
// Determine scenery altitude. Normally this just happens when we
// render the scene, but we'd also like to be able to do this