hi,


it seems that the problem comes from the plane that block the light.


with the comment of 'Cousin Ricky', i'm testing changing some values
in /Radiosity_Final/ settings :
 * count 800 -> 50 //  just for speed in tests
 * error_bound 0.20 ->  0.05 
 * recursion_limit 1 -> 2
 * brightness 1.0 -> 0.80

these parameters gives this new image which is much better.
i will continue my tests by adjusting other param/values.



about image itself, just an idea like that, i have not thought of 
Mondrian. this image as hand-placed boxes, but, I had already made an 
algorithm for generating Mondrian pictures.

you can see it on my page <http://louisbel.free.fr/scenes/scene021.shtml>
(in french)



thanks a lot for your help.

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