On Mon, 11 Jan 1999, Dan Petersen wrote:
>
>
> >
> > Hi all...
> >
> > I've been attempting to use lights, but they don't work! I put a light in
> > the group, set the influencing bounds, and place the other shapes in.
> >
> >
> > I've made the light colored, moved it, ect, but I don't get any change in
> > appearance with my shapes.
> >
> > I've tried different Materials but that doesn't effect this either.
> >
> > Any help?
> >
> > Chad Zalkin
>
> Have you specified normals for your geometry? If your objects do not have
> normals you will not be able to see anything.
>
What's the best way of generating normals? Vector cross product or is
there something in the API. Also, if they have to be normalised, what's
the best way of doing that and to what degree of accuracy must they be
normailsed too? Cheers,
Jon Beniston.
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