"omniverse" <omn### [at] charternet> wrote:
> "[GDS|Entropy]" <nomail@nomail> wrote:
> > clipka <ano### [at] anonymousorg> wrote:
> > > Am 13.12.2016 um 22:15 schrieb [GDS|Entropy]:
> > >
> > > > The Fog is being a little weird, because Media without a container is only
> > > > visible when looking at the plane below it, and it vanishes above the horizon.
> > > > ?! Weeeird. Very counterintuitive.
> > >
> > > Doesn't sound like something that should happen.
> > >
> > > Care to share any details?
> >
> > Sure. :)
> >
> > The plane in there seems to have no effect, commented or no, which seems to be
> > improper based on what Alain was saying. Here is a minimal scene which
> > reproduces the effect being discussed.
>
> 'Official' and 'alpha' versions render differently so something changed, I guess
> you're not using official 3.7? I get the black void in 3.7.1.1-alpha, while
> official 3.7.0 shows oversaturation of media as would be expected.
>
> If you add the following spotlight to your (1st) light, it can apparently create
> a finite region for the rays. That is mentioned in the docs:
>
> http://wiki.povray.org/content/Reference:Atmospheric_Media
>
>   spotlight point_at <0,-1,1> radius 18 falloff 20
>
> This could take some tweaking to get better, I just threw it in there, but there
> didn't seem to be much range beyond that radius and falloff before it fails to
> look okay again. Maybe with better point_at angle, just so it isn't directed
> into infinity again.
>
> Bob

You are correct I am using UberPov, but didn't think to include that information
because I had seen this before [above horizon cutoff] in other versions of Pov.

Ian

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