Jim Holsenback nous illumina en ce 2009-03-30 16:16 -->
> "clipka" <nomail@nomail> wrote in message
> news:web.49d10dc330aab812f708085d0@news.povray.org...
>> Duh - from the looks of it, I'd say your glass globe is *solid*!
> 
> well double duh .... that's what appears to be happening but I've proven
> that the globe is a tube. I gave it just a pigment and rotated it so I could
> see ALL the way throught it!
> 
> I even used just a plain cone object with open and hollow keywords and the
> effect is still there.
> 
>> So your objects *do* intersect - not their surfaces, but their volumes.
> 
> doesn't open (if applicable) and hollow keywords overcome that problem?
> 
> Cheers
> 
> 
This is a pair of open cylinder with an ior of 1.5.
The left one is rotated so that you can see trough both open ends, the other is 
seen edge on.
There is also a small spgere with only a pigment of rgbt 1 and no interior at 
the center of both cylinders.

As you can see, the ior does affect the background even if you only pass trough 
one surface. The sphere is also visible on the right where you see it trough the 
side of the cylinder.
On the left, the sphere is completely invisible, but is very visible on the right.

-- 
Alain
-------------------------------------------------
'Honesty is the best policy, but insanity is a better defense'

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