Here's a simple test rendering:
http://neil.fraser.name/test.jpg
It is a solid glass sphere, nested inside a hollow glass hemisphere. The
yellow bar in the background is just for reference. Individually the
sphere and the hemisphere are perfect. But for some reason when combined
they suddenly go opaque. I've switched on photon refraction, but that
doesn't seem to make a big difference. What am I missing?
Source is here:
http://neil.fraser.name/test.pov
From: Hughes, B
Subject: Re: Two transparent objects
Date: 13 Jun 2004 12:06:53
Message: <40cc7b9d$1@news.povray.org>
"Neil Fraser" <pov### [at] neilfrasernameNOSPAM> wrote in message
news:web.40cc76dce592e47d2b83a860@news.povray.org...
> Here's a simple test rendering:> http://neil.fraser.name/test.jpg>> What am I missing?
It's something simple. :-) Just add a max_trace_level 7 or more to your
global_settings. I suggest reading about that in the Help.
Bob H.
"Neil Fraser" <pov### [at] neilfrasernameNOSPAM> wrote:
> But for some reason when combined> they suddenly go opaque.
Got it.
global_settings {
max_trace_level 10
}
Looks great now!
> It's something simple. :-) Just add a max_trace_level 7 or more to your> global_settings. I suggest reading about that in the Help.
Thanks Bob,
I must say that in all my years of programming and using computers, I've
never come across a help system as informative and usefull as POV-Ray's.
This was the first time that I've run into a POV-Ray issue which I couldn't
find an answer for in the help. Mainly because I was barking up the wrong
tree (photons) instead of looking more generally (the FAQ).
From: Hughes, B
Subject: Re: Two transparent objects
Date: 13 Jun 2004 23:31:33
Message: <40cd1c15$1@news.povray.org>
Happy to help.
Yeah, it's always a good idea to look for a FAQ first. The only problem with
that is, you must have a good idea of what to look for or else you'll end up
reading everything to find what seems to match the situation. If I hadn't
seen your example image I'd have thought you were seeing the transparency
itself fail (e.g. semi-clear white becoming opaque white) instead of losing
sight of the surfaces.
Doc's and FAQ's = Searching for a needle in the haystack using a magnet.
Bob H.
fraser