"Philippe-H Cadet" <del### [at] videotronca> wrote in message
news:3a41ac3d@news.povray.org...

> As I can see Povray is not vertex based, anyways I goin to try avoid this
> metal illusion
> that a shape or 3d object can have a middle.
>

It's a very common beginners misconception. I suspect because beginners
start with the simple shapes such as sphere etc. which can easily behave as
though they do have a centre (as well as having their position defined with
just one set of co-ordinates).

For me, it wasn't until I started working with blobs that I began to
understand what was going on.

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