Thank you both for your kind appreciation!

The problems you reported about the objects "floating"
in front of the wall are real, but I could not manage
to correct them in a reasonable way. I really have to
learn how to soften the border line between two distinct
objects!

Take the shelf on the wall. The real problem here is
the lack of a soft shadow under the shelf.  Obviously,
this shadow cannot be casted by the external light
because of the position of the shelf, which is too high.

I have tried to use an image_map with manually placed
dark shades (in order to simulate shadows) for the wall
texture, but the result was not easily manageable.
The use of light groups seems to be the most obvious
solution, yet is not as simple as one might think: unless
one uses a "shadowless" light (a nonsense in this
situation) the computation time greatly increases when
using complex surfaces (like the shelf in my image: an
isosurface with great roughness).

I decided to ignore the problem because of lack of time,
but I am aware that this *is* a problem.  Has somebody
any quick trick for this?

Another problem is the floor. But this is another story...

Maurizio Tomasi (alias "zio tom").

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