added closestLineTo() method to compute intersection line between 2 given line segments, intersection result is encapsulated as a Line3D.LineIntersection instance, which can be queried further
added closestLineTo() method to compute intersection line between 2 given line segments, intersection result is encapsulated as a Line3D.LineIntersection instance, which can be queried further

--HG--
branch : toxiclibs

rekii/toxiclibs,postspectacular/toxiclibs,ruby-processing/toxiclibs,postspectacular/toxiclibs,rekii/toxiclibs