Thomas de Groot <tho### [at] degrootorg> wrote:
> Op 16/09/2021 om 00:10 schreef Samuel B.:
> > "Kenneth" <kdw### [at] gmailcom> wrote:
> >> 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.

I had that happen, too: suddenly all the craters inverted themselves and became
bumps. I'm sure it would not have happened so easily if the craters had proper
shadows.

Sam

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