From: Thomas de Groot
Subject: Re: Ringworld scene
Date: 11 Feb 2021 02:28:16
Message: <6024dc90@news.povray.org>
Op 10/02/2021 om 11:29 schreef Mike Horvath:
> On 2/9/2021 2:36 AM, Thomas de Groot wrote:>> I wonder if at that distance an area_light is really effective. A >> point light (with parallel) would probably be much faster and without >> any visual difference.>>> > The area light is necessary to create the fuzzy shadows. (Otherwise > shadows would have a sharp edge and the lighted regions would be larger > than the shadow regions IIRC.)> > A 6x6 area light may be excessive though. Dunno.> > > Mike
Ah, yes. Forgot about the shadow squares indeed. I seem to remember now
that I had some trouble of the kind, back when I modelled the Ringworld
(ten years ago? I am not sure)
--
Thomas
From: Alain Martel
Subject: Re: Ringworld scene
Date: 11 Feb 2021 11:12:24
Message: <60255768$1@news.povray.org>
> On 2/9/2021 2:36 AM, Thomas de Groot wrote:>> I wonder if at that distance an area_light is really effective. A >> point light (with parallel) would probably be much faster and without >> any visual difference.>>> > The area light is necessary to create the fuzzy shadows. (Otherwise > shadows would have a sharp edge and the lighted regions would be larger > than the shadow regions IIRC.)> > A 6x6 area light may be excessive though. Dunno.> > > Mike
If using adaptive, that 6x6 become 9x9.
As for using parallel... That would only work for a small part of the
ring. parallel can't be used when the light_source is surrounded by
shadow casting elements.
From: Mike Horvath
Subject: Re: Ringworld scene
Date: 17 Feb 2021 19:37:45
Message: <602db6d9$1@news.povray.org>
On 10/13/2013 2:18 AM, posfan12 wrote:
> Here's the scene file for my ringworld attempt. Any suggestions? Especially on> how to make the atmosphere appear?> > > Mike>
Latest code can be found here:
https://github.com/mjhorvath/Mike-Wikipedia-Illustrations/tree/master/Miscellaneous/ringworld
Mike