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Like I was feebly trying to say before, I think it's a hidden coupling with
density being a default of 1 (maybe?) even when not specified at all. That's
just a guess of course but it seems to fit.
I believe the most correct way to use scattering then is to use a much lower
color value when the volume is greater and vice versa.
Try this out: multiply White by 10000 when you use the BoxA. The resulting
render will look much the same as your "wrong" BoxB render. Divide White by
10000 and use BoxB, it will be all white. It's still just a volume/scattering
relationship after all but I still think an implied density {rgb 1} is in there
whether used or not. extinction is probably a part of it all for that very
reason but I'm not the one to say that's absolutely so.
Bob
"Tom Melly" <tom### [at] tomandlu f9couk> wrote in message
news:38cfeeff@news.povray.org...
| Many thanks - I'll play with those settings. I must confess that media still
| mystifies me - as soon as I seem to be able to make a model in my head of
| what it does, it goes and bites me in the arse. Why, for example, should the
| extinction value be so significant - particularily as the docs advise that
| the default is the most accurate representation? IMHO If x units thickness
| of media show as white, then so should x+y (when the media is viewed from
| the lighted side). Is this an inaccuracy? (the thick media showing as
| black) - if so why does megapov compound the error?
|
| --
| Tom Melly
| tom### [at] tomandluforce9couk
| http://www.tomandlu.force9.co.uk
|
| Bob Hughes <omn### [at] hotmailcom?subject=PoV-News:> wrote in message
| news:38cfdd64@news.povray.org...
| > I tried it out and although I don't fully know the reasoning behind it I
| found
| > putting extinction .0025 into the 'scattering' statement fixes it. The
| logic
| > seems right if there were 'media_attenuation on' in the light but I tried
| adding
| > that in as well with it both on and off, neither way makes a difference.
| > Check it out using 0.0033 for the extinction and it's interesting. My
| guess is
| > the missing link to 'density', it acts as though there is a 'density {rgb
| 1}'
| > present I believe and if approximately density {rgb .00025} (or lower)
| is used
| > then it corrects it (no need for extinction then either).
| >
| > Bob
| >
| > "Tom Melly" <tom### [at] tomandluforce9couk> wrote in message
| > news:38cfc981$1@news.povray.org...
| > | Sorry for lack of clarity - have reposted with full code to
| text.scene-files
| >
| >
| >
|
|
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On Wed, 15 Mar 2000 12:14:06 -0800, Ken <tyl### [at] pacbellnet> wrote:
>Irel arj Zbenl/CBI-Enl MEDIA urer jvgu n ynetr urnqnpur samples gelvat
>svther intervals pbeerpg yvtugvat ratio sbe fbzr pbzchgre blob tencuvp.
>V nz hollow vzorpvyr gb inverse jvgu fb Voxel gnyxrq gb fbzr cebsrffvb
>qrfvtaref naked gurls jrr gnyxvat nobhg gur x*3 yvtug zrgubq sbe yvtug
>fprar.
>
>And that is all I can add to this.
Ken, something wrong has gone with your speech synthesizer. You seem
to have somehow linked the random-POV-geek-slang-generator to the AI
encoder for even after I decoded it it made no sense at all (except
the gurls part :) )
Peter Popov
pet### [at] usanet
ICQ: 15002700
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Ken <tyl### [at] pacbellnet> wrote in message
news:38CFEF0E.F1F72277@pacbell.net...
>
>.....
> fprar.
>
> And that is all I can add to this.
>
That works for me.
P.S. Sorry for the lack of snipping in my previous follow-ups - I accidently
pressed some send shortcut before I had a chance.
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Ron Parker wrote:
> Jung vf gung, fbzr xvaq bs Znexbi Punva/EBG13 guvat?
Yes.
> Vg'f gehyl ornhgvshy; V unira'g uvg rfp-E gung zhpu sbe bar cbfg va n ybat gvzr.
What does esc-R do ?
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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On Wed, 15 Mar 2000 12:14:06 -0800 Ken <tyl### [at] pacbellnet> wrote:
>Irel arj Zbenl/CBI-Enl MEDIA urer jvgu n ynetr urnqnpur samples gelvat
>svther intervals pbeerpg yvtugvat ratio sbe fbzr pbzchgre blob tencuvp.
>V nz hollow vzorpvyr gb inverse jvgu fb Voxel gnyxrq gb fbzr cebsrffvb
>qrfvtaref naked gurls jrr gnyxvat nobhg gur x*3 yvtug zrgubq sbe yvtug
>fprar.
MEDIA samples intervals ratio blob hollow inverse naked gurls...
Ken, you neglected to include a .url where we could see some examples.
Am I correct in assuming that you ran this post through the
Transbibitiser? Is that Polish?
--
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
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Alan Kong wrote:
>
> On Wed, 15 Mar 2000 12:14:06 -0800 Ken <tyl### [at] pacbellnet> wrote:
>
> >Irel arj Zbenl/CBI-Enl MEDIA urer jvgu n ynetr urnqnpur samples gelvat
> >svther intervals pbeerpg yvtugvat ratio sbe fbzr pbzchgre blob tencuvp.
> >V nz hollow vzorpvyr gb inverse jvgu fb Voxel gnyxrq gb fbzr cebsrffvb
> >qrfvtaref naked gurls jrr gnyxvat nobhg gur x*3 yvtug zrgubq sbe yvtug
> >fprar.
>
> MEDIA samples intervals ratio blob hollow inverse naked gurls...
You missed Voxel and x*3.
> Ken, you neglected to include a .url where we could see some examples.
www.povsmut.com
> Am I correct in assuming that you ran this post through the
> Transbibitiser?
The ROT-13 Dual Overhead Turbo Transbibitiser Mark IV Limited Edition.
> Is that Polish?
Yeski.
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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On Wed, 15 Mar 2000 15:28:04 -0800, Ken wrote:
>What does esc-R do ?
It rot-13's a post in slrn, of course.
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On Wed, 15 Mar 2000 15:44:27 -0800, Alan Kong
<ako### [at] povrayNO-SPAMorg> wrote:
> MEDIA samples intervals ratio blob hollow inverse naked gurls...
I prefer straight girls, thank you. Blobs I don't mind but they better
not be hollow behind the ears.
Peter Popov
pet### [at] usanet
ICQ: 15002700
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BTW very good reply to this in the pov.text.scene-files from J.Berger that
gives a good picture of why media behaves in this way. Haven't played with
it yet, but it makes a lot of sense IMHO.
--
Tom Melly
tom### [at] tomandluforce9couk
http://www.tomandlu.force9.co.uk
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On Thu, 16 Mar 2000 23:08:37 +0200, Peter Popov wrote:
>On Wed, 15 Mar 2000 15:44:27 -0800, Alan Kong
><ako### [at] povrayNO-SPAMorg> wrote:
>
>> MEDIA samples intervals ratio blob hollow inverse naked gurls...
>
>I prefer straight girls, thank you. Blobs I don't mind but they better
>not be hollow behind the ears.
But there's somthing very attractive about a woman who has to close
down all other brain functions in order to recite the days of the week
in reverse order.
--
Cheers
Steve email mailto:sjl### [at] ndirectcouk
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.ndirect.co.uk/~sjlen/
or http://start.at/zero-pps
3:34am up 2 days, 1:00, 5 users, load average: 1.15, 1.21, 1.18
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