Hans, you're doing much more things than cleaning the closets here.
Fabrizio, I don't think the .sc file format will help you here, since Sweet Home 3D doesn't exchange any file with SunFlow, but simply calls its Java API.
The thread cited by Hans was just to show you that it's not impossible to program and others thought about it already.
But frankly, I have no ambition to work on this feature in a close future, unless someone pays me to program it or... programs it himself and contributes a working solution.
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Emmanuel Puybaret, Sweet Home 3D creator
