"Thomas de Groot" <t.d### [at] internlnet> wrote in message 
news:440168ba@news.povray.org...
>
> I moved the light, and hence the shadows.

That seems the best way to do the shadow, with the horizontal tabletop 
piece's shadow being almost non-existant it helps to keep the illusion. 
Although, I wasn't talking about moving it that way. Now that I've taken 
your image into a drawing program and moved the shadow lines around I can 
see that my idea was wrong. It would have made the illusion worse.

The problem with having a shadow in there at all seems to be that it 
requires two different ones, since the object itself is actually supposed to 
be seen two different ways anyhow. So a single shadow only messes with the 
illusion unless you hide part of it, like you've now done. And looking back 
at your first posted image, it obviously would have been okay, except that 
it seemed the wood pieces mostly laid down across the table instead of being 
mostly in the air. That shadow really makes the mind think of a predominate 
way it's oriented all depending on how the shadow is used. Ultimately it 
introduces another dimension into the whole thing so you've got to be clever 
to add that in as right as possible.

At least, I sure couldn't decide on any better way of going about it after a 
little puzzling over the picture a while.

Bob H.

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