POV-Ray : Newsgroups : povray.pov4.discussion.general : daylight : Re: daylight Server Time
10 Dec 2023 11:49:25 EST (-0500)
  Re: daylight  
From: MichaelJF
Date: 3 Feb 2013 13:10:01
Message: <web.510ea7828f43b6279b9378020@news.povray.org>
clipka <ano### [at] anonymousorg> wrote:
> Am 03.02.2013 10:23, schrieb Nathalie:
> > Is it possible to calculate daylight according to different methods in POV-ray?
> > I would like to try ray-tracing, radiosity and photon mapping. Can anyone help
> > me with this?
> For proper looking daylight you'll need global illumination, to simulate
> the indirect light from the blue sky. Classic raytracing alone won't
> give you that, and POV-Ray's Photons implementation doesn't do GI
> either. That leaves you with radiosity only.
> You might try MCPov as an alternative, which uses stochastic ray tracing
> instead of radiosity to compute GI. (Beware of a bug in MCPov though:
> You'll need to set the "diffuse" parameter to twice the value you'd use
> in POV-Ray.)

I am not quiet sure if Christophs answer really meets your request. As ever he
is completelly right - he corrected me a lot of times, and I'm really thankful
for that. E.g. photons are mainly used to calculate caustics from glasses or
gems. But I have the impression that he had misinterpreted your request here.
Can you name the different methods to calculate daylight? Can you give us an
idea of the scene you have in your mind? That would be most helpful to answer
your request IMO.

Bes regards,

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