PLANEPOINT Compute 3D position of a point in a plane.

   POINT = planePoint(PLANE, POS)
   PLANE is a 9 element row vector [x0 y0 z0 dx1 dy1 dz1 dx2 dy2 dz2]
   POS is the coordinate of a point in the plane basis,
   POINT is the 3D coordinate in global basis.

   Example
     plane = [10 20 30  1 0 0  0 1 1];
     pos2d = [3 4];
     pt = planePoint(plane, pos2d)
     pt = 
           13  24   34

   See also
   geom3d, planes3d, planePosition

Package: matgeom