[ REQ 5252]: geomview question

[Ioannis.Emiris at sophia.inria.fr]

hello

i'm currently using geomview to display the output of my
3d convex hull program: this is an adaptation of the
general code to a specific robotics application.  The
algorithm requires that the facet vertices are ordered in
ccw fashion as seen from the outside.

For robustness and debugging, i would like to further use
geomview to check this ordering.  The question is:  Is there
a way to force normals to be drawn according to the ordering
of the vertices?  Then normals that do not point outwards
(or inwards, according to the convention) would indicate bad
orderings.  Also, if the vertices are not cyclically ordered
drawing the normal would fail or complain.

Thanks
Ioannis Emiris