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From: Nieminen Juha
Subject: Question about ultra_wide_angle camera in uvpov
Date: 5 Dec 1999 11:10:34
Message: <384a8e7a@news.povray.org>
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The ultra_wide_angle camera differs a lot in the official povray and uvpov.
The difference is not only in the measurement of the angle (you can't get
the same image in uvpov is in the official pov just by changing the camera
angle and nothing else).
What changes has been made to the ultra_wide_angle camera in uvpov?
Btw, the media method 3 is wonderful.
--
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/
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In article <384a8e7a@news.povray.org>, Nieminen Juha
<war### [at] punarastas cstutfi> wrote:
> The ultra_wide_angle camera differs a lot in the official povray and
> uvpov.
> The difference is not only in the measurement of the angle (you can't get
> the same image in uvpov is in the official pov just by changing the
> camera angle and nothing else).
> What changes has been made to the ultra_wide_angle camera in uvpov?
I remember reading about a bug in the official version with the
ultra_wide_angle camera, I think it had something to do with a value not
being multiplied by pi when it should have been. UVPov might fix this
bug, which would be why it produces different results.
However, I can't find where I saw this bug...
--
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/
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From: Nathan Kopp
Subject: Re: Question about ultra_wide_angle camera in uvpov
Date: 5 Dec 1999 17:36:45
Message: <384ae8fd@news.povray.org>
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Chris Huff <chr### [at] yahoocom> wrote...
> In article <384a8e7a@news.povray.org>, Nieminen Juha
> <war### [at] punarastascstutfi> wrote:
>
> > The ultra_wide_angle camera differs a lot in the official povray and
> > uvpov.
> > The difference is not only in the measurement of the angle (you can't
get
> > the same image in uvpov is in the official pov just by changing the
> > camera angle and nothing else).
> > What changes has been made to the ultra_wide_angle camera in uvpov?
>
> I remember reading about a bug in the official version with the
> ultra_wide_angle camera, I think it had something to do with a value not
> being multiplied by pi when it should have been. UVPov might fix this
> bug, which would be why it produces different results.
>
> However, I can't find where I saw this bug...
That was one bug. There was actually another bug. Gerald K. Dobiasovsky
suggested some other bugfixes back in July, 1999 which fixed bugs in
ultra_wide_angle and the four cylinder cameras. I have never used any of
these cameras, so I never came across the original bug nor do I know exactly
what the bugfixes change.
-Nathan
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From: Gerald K Dobiasovsky
Subject: Re: Question about ultra_wide_angle camera in uvpov
Date: 6 Dec 1999 15:20:17
Message: <384c1a81@news.povray.org>
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Nieminen Juha <war### [at] punarastascstutfi> wrote:
> The ultra_wide_angle camera differs a lot in the official povray
and uvpov.
> The difference is not only in the measurement of the angle (you
can't get
> the same image in uvpov is in the official pov just by changing the
camera
> angle and nothing else).
> What changes has been made to the ultra_wide_angle camera in
uvpov?
[snip...]
Is the code in uvpov identical with the one in the superpatch?
If yes, then the camera angle should be correct
provided you keep the camera's right vector at unit length.
(i.e. up < 0, 3/4, 0 >
right < 1, 0, 0 >
instead of the default up < 0, 1, 0 >
right < 4/3, 0, 0 > ).
--
Gerald
ger### [at] aonat
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