http://mathworld.wolfram.com/Point-PlaneDistance.html
Have not tried it myself mind, but it seems reasonably understandable. It seems getting the distance is really easy if your plane is described in hessian normal form, see the link on that page.
Have not tried it myself mind, but it seems reasonably understandable. It seems getting the distance is really easy if your plane is described in hessian normal form, see the link on that page.