extruding circle along a path

Hi,
i would like to know if I there is a way extruding a circle along a path to design a tube shape , or do I need to wrap the GLE Tubing library :
http://linas.org/gle/
Best Regards
S.Ancelot

A simple way to to this:

Set the width of the tube.

Generate points along the perpendicular vector on both sides of the path such that they are width in distance to it. Sample points as much resolution as u want. You can even choose the positions accourding to curvature change (if u like or you can stick to uniform spacing).

This will give you an open tube (pipe like). To get the circular ends: on the end points of the path generate a semi circle between the two points generated on Both sides (using the perpendicular) and the end point as the center of the semi circle.