OK. I can as well show the state-of-the-art now while it is still in flux.

Proximity Patterns are notoriously difficult when used on flat surfaces. 
They give the best results on complex surfaces with many creases. So, 
knowing what I could expect, I started a series of tests and fine 
tuning. I got an acceptable result using a separate object of the first 
floor (see image EP_Proximity_Test.jpg). However, translating these 
settings to the Gutenbach model - and assuming that I used exactly the 
same settings - I got the second image (see image Gutenbach_test.jpg). 
Not the same.

I think I know what happened and that means that I have to rethink part 
of the model's geometry, at least where the texture use is concerned. 
Bit for now, the experiment shows some promising possibilities.

-- 
Thomas

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