DRAWAXIS3D Draw a coordinate system and an origin.

   drawAxis3d
	Adds three 3D arrows to the current axis, corresponding to the 
	directions of the 3 basis vectors Ox, Oy and Oz.
	Ox vector is red, Oy vector is green, and Oz vector is blue.

   drawAxis3d(L, R)
   Specifies the length L and the radius of the cylinders representing the
   different axes.
   
   drawAxis3d(..., 'TFM', TRANSFORM)
   Transforms the coordinate system before drawing using TRANSFORM.

   H = drawAxis3d(...) returns the group handle of the axis object.

   Example
   drawAxis3d

   figure;
   drawAxis3d(20, 1);
   view([135,15]); lighting('phong'); camlight('head'); axis('equal')
   xlabel X; ylabel Y; zlabel Z

   See also
   drawAxisCube

 ------
 Author: David Legland
 e-mail: david.legland@nantes.inra.fr
 Created: 2007-08-14,    using Matlab 7.4.0.287 (R2007a)
 Copyright 2007 INRA - BIA PV Nantes - MIAJ Jouy-en-Josas.

Package: matgeom