POV-Ray : Newsgroups : povray.binaries.images : Luna, Moon... desert satellite : Re: Luna, Moon... desert satellite Server Time
7 Dec 2021 04:50:48 EST (-0500)
  Re: Luna, Moon... desert satellite  
From: Thomas de Groot
Date: 16 Sep 2021 02:34:42
Message: <6142e582$1@news.povray.org>
Op 16/09/2021 om 00:10 schreef Samuel B.:
> "Kenneth" <kdw### [at] gmailcom> wrote:
>> "Samuel B." <stb### [at] hotmailcom> wrote:
>>> But it's not close enough, since a dedicated individual would eventually observe
>>> how the craters don't cast proper shadows near the terminator :/
>>>
>>
>> I'm still trying to spot those flaws, but I don't see them :-/
> 
> The issue of the craters not casting shadows is just that: if the object was
> using actual displaced geometry you would see shadows cast across the basins on
> the craters. But all you get on a simple bump-mapped sphere is shading... No
> displacement of geometry, no shadows. It's not really a big issue at smaller
> resolutions, but I think it is noticeable.
> 
Ah, yes... that is indeed true. It may account also for the phenomenon I 
observe here, of the lunar light/shadow features optically switching to 
their opposites. I have to zoom out to get the correct aspect again.

> The other features I was talking about are something else. I'll highlight them
> in a reply to Thomas.
> 
See there for some answers.

-- 
Thomas


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