"Reactor" <rea### [at] hotmailcom> schreef in bericht 
news:web.48a1e2994025b6ec993f4ab30@news.povray.org...
>
> No, unfortunately.  I was having trouble with the Wings uv mapping export 
> at the
> time.  I might revisit it at another point, but it was really an 
> experiment into
> finding a good way of making overhangs in landscapes.  The next thing I 
> want to
> try is something my brother described: a six-sided heightfield in which 6
> images determine the shape of the landscape.  I am not sure how to 
> implement
> that yet, but that and another idea of blending heightfields and meshes 
> are
> things we want to test out and see if they would be feasible.
>

I see. I have not been overly enthousiastic about Wings uv mapping. Nowadays 
I prefer Silo to it (not free, however).

In the past, I have made objects composed of different heightfields, unioned 
and differenced together. In particular, a six-sided tower! That works very 
well indeed. Overhangs can also be created by heightfields placed 
vertically. Differenced with a horizontal heightfield on top, and you have a 
(ragged)cliff.

I think that blending of heightfields together and/or with meshes is not 
difficult in itself, the problem is the seam which will often show up as a 
fairly straight line under some viewing angles. That can be hidden to some 
degree by an appropriate global texture or by carefully placed objects in 
the line of sight, but it is tricky.

Thomas

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