Tom Melly <tom### [at] tomandlucouk> wrote:
: I haven't tried it, but could it be that your bounding sphere is the same
: radius as the globe - a coincident surface type problem?

  The coincident surface problem happens only when povray has to calculate
which one of two points is closer than the other.
  Povray does not do this kind of test with bounding object and the object
it's bounding, so there can't be coincident surface problems there.

: WARNING - I'm usually wrong.

  I could say something funny here, but can't figure out anything smart :)

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):_;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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Tom Melly <tom### [at] tomandlucouk> wrote:
: Just out of curiousity, is there any point in bounding a sphere in this
: context?

  Not really.
  It tould benefit only if you want to see part of the sphere.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):_;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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In article <3a018f79@news.povray.org>, Warp <war### [at] tagpovrayorg> 
wrote:

>   I think there's a third case where there's difference between an 
> inverted and non-inverted sky sphere: If it has (for some reason) ior.

You're right...POV uses the difference in ior to perform the 
calculations, so there will be a difference there. However, "hollow" 
won't make a difference in this case, it only affects fog and media.

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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