Mathematics are the simplest language. 
It works as designed to work: nearest point on route. Whatever that “nearest” point can be, backward, beside, forward, etc. There is no “next” in its description (if mean that).
Mathematics are the simplest language.
It works as designed to work: nearest point on route. Whatever that “nearest” point can be, backward, beside, forward, etc. There is no “next” in its description (if mean that).