coordsys_generic
namespace nin {
template <derived_from_coordsys_backend BE>
class coordsys_generic final : public coordsys<typename BE::coordsys_traits>;
}coordsys_generic is a convenience wrapper that turns any coordsys_backend derivation
into a complete coordinate system. It owns a backend of type BE and exposes it through
operator →.
Use coordsys_generic when you have a custom backend that is not a child (i.e. it does not
have a parent in the kinematic tree, or manages its own traversal logic). For child-style
backends, use coordsys_child instead.