PROJPOINTONLINE3D Project a 3D point orthogonally onto a 3D line.

   PT2 = projPointOnLine3d(PT, LINE).
   Computes the (orthogonal) projection of 3D point PT onto the 3D line
   LINE. 
   
   Function works also for multiple points and lines. In this case, it
   returns multiple points.
   Point PT1 is a N-by-3 array, and LINE is a N-by-6 array.
   Result PT2 is a N-by-3 array, containing coordinates of orthogonal
   projections of PT1 onto lines LINE. 


   See also:
   projPointOnLine, distancePointLine3d

   ---------
   author : David Legland 
   INRA - TPV URPOI - BIA IMASTE
   created the 2012-08-23.

Package: matgeom