Hi,
This maling list is for issues related to freecad development...
You'd better ask questions about freecad usage on the forum:
http://apps.sourceforge.net/phpbb/free-cad/index.php
They will be better and faster answered there.

Regarding this question, you get the normal of a face like this:
FreeCAD.ActiveDocument.myObject.Shape.Faces[0].normalAt(0,0)
(0,0) is the UV coordinate of the point on the face you want the
normal from. (0.5,0,5) is the center of the face.

Cheers
Yorik

On 13 December 2012 23:39, Dino Del Favero wrote:
Hello everybody,
I'm new to FreeCAD, I'm trying to retrieve info from a face using a python
script, for example I want to know the normal vector in a point of the face,
I have read
http://sourceforge.net/apps/mediawiki/free-cad/index.php?title=Mesh_to_Part
but not understand what represent the values retrieved by
face.ParameterRange, I think that I need use this values for "move" on the
face, it is right?
someone can help me to understand? or can indicate me where is the
documentation that can help me?

Thank you so much
Best regards
Dino