DISTANCEPOINTPLANE Signed distance betwen 3D point and plane.

   D = distancePointPlane(POINT, PLANE)
   Returns the euclidean distance between point POINT and the plane PLANE,
   given by: 
   POINT : [x0 y0 z0]
   PLANE : [x0 y0 z0 dx1 dy1 dz1 dx2 dy2 dz2]
   D     : scalar  
   
   See also:
   planes3d, points3d, intersectLinePlane

   ---------
   author : David Legland 
   INRA - TPV URPOI - BIA IMASTE
   created the 18/02/2005.

Package: matgeom