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"SharkD" <pos### [at] gmail com> schreef in bericht
news:4c18359b$1@news.povray.org...
>>
>
> I know you're trying to stay true to the book, but you could replace the
> shadow "squares" with a lattice of some sort that progressively blocks
> more or less light in a gradual manner.
>
No, that is not the problem, and in fact the area_light sun already takes
care of the penumbrae cast by the shadow squares like you can see on the
images. The point is that the sun is always at the vertical to the ring
surface, like if you were in the tropics on Earth, and permanently at noon.
This results in very little shadow effects on the landscape, and is why by
the way, photography at noon is not recommended in general. So *real*
shadows will be cast by overhangs, artificial objects, and clouds.
Thomas
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