Thanks for all your encouraging comments!
Volker Harun, I think in theory you are right about the vertical faces, even more so in a small sphere like mine.(r=36km, which is not very dysonlike at all, should be 1AE [AU? I think I saw AE in English]) The Sunlight isn´t as parallel as on a tiny ball far away like the earth.
You say I was right, but I had to think about why that is so.
On one hand, the lightsource is not punctual. (I actually used 3 lightsources in one cloudlayer)
On the other hand, when I look up at my dyson-sky, I see only the sunlit rooftops of my antipodes (Anticephaloi?)
Thanks for the good wishes, i shouldn´t be here now but learning learning learning!
I will try to concentrate, see you in two weeks then.
Best Regards,
Jan