"Chaps" <cha### [at] yahoocom> wrote in message
news:3bd0297a@news.povray.org...
> Hi philippe, I'm not certain to really understand what you are looking
for.
>
> I don't understand why union is better than difference. In this case, as
> there are many
> coincident surfaces, I would use a merge.

Speed.

Coincident surfaces are a problem indeed. I still do not knwo how I will
solve that.

>
> Anyway I wrote this, it seems to work.
>

Thanks.

I was actually thinking about something more general. I am working (slowly)
on an explanatory example...


Povingly,


Philippe

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