POV-Ray : Newsgroups : povray.general : photon problem: image of projected image_map is clipped at the corners : Re: photon problem: image of projected image_map is clipped at the corners Server Time
7 Dec 2022 08:55:05 EST (-0500)
  Re: photon problem: image of projected image_map is clipped at the corners  
From: Corvin Zahn
Date: 23 Sep 2010 06:40:00
Message: <web.4c9b2e0df4c32bf1c947b6de0@news.povray.org>
Christian Froeschlin <chr### [at] chrfrde> wrote:

> I think it is a bug, although the photon FAQ mentions that
> the photon method is not very well suited for planar objects
> with an ior close to 1.0. You might wish to report this
> under http://bugs.povray.org/.

Done

> As a workaround, splitting the slide object into strips
> seems to help, although you may then need a higher photon
> count to avoid artefacts:
>
> union
> {
>    box {<0,0.0,0>, <1,0.1,0.01>}
>    box {<0,0.1,0>, <1,0.2,0.01>}
....

Thanks very much, this workaround seems to work for me too.

Corvin


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