"Warp" <war### [at] tagpovrayorg> wrote in message
news:3ed7dca0@news.povray.org...
> Xilo Musimene <xil### [at] hotpopcom> wrote:
> >    I need to make a filled height field, that is, a height field which
> > has an interior beneath the top surface.
>
>   You should be more specific about this. You description does not really
> tell what is what you need.

Well, CSG difference from a box could be the answer. That gives a solid
object to work with. But I agree that the Xilo's message confused me when it
came to the cylinders and blobs and bump mapping.

Bob H.

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