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From: Christoph Hormann
Subject: outdoor water photons (~4*14k)
Date: 29 Mar 2001 12:31:42
Message: <3AC3716D.F59BAA3@gmx.de>
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After seeing Chris Huff's bucket photons i tried some tests for using
photons on large water surfaces in outdoor scenes.
Using large objects with photons turned out to be quite slow and therefore
i tried to split up the water surface into parts where photons are
calculated and where not.
See the results attached, the calculation times are:
#1:
photons: 2:06
total: 11:46
#2:
photons: 8:57
total: 22:54
#3:
photons: 1:54
total: 13:44
#4 (higher quality):
photons: 5:23
total: 21:59
This splitting up works quite well, but i wonder if it would be useful to
include support for automatizing this in povray. For example one could
specify an object and only inside this object photons are calculated.
Christoph
--
Christoph Hormann <chr### [at] gmx de>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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Attachments:
Download 'photons01.jpg' (11 KB)
Download 'photons02.jpg' (14 KB)
Download 'photons03.jpg' (14 KB)
Download 'photons04.jpg' (14 KB)
Preview of image 'photons01.jpg'
Preview of image 'photons02.jpg'
Preview of image 'photons03.jpg'
Preview of image 'photons04.jpg'
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in <3AC### [at] gmxde> Christoph Hormann wrote:
>This splitting up works quite well, but i wonder if it would be
>useful to include support for automatizing this in povray. For
>example one could specify an object and only inside this object
>photons are calculated.
How about using photons in combination with projected_through and
lightgroups. Never tried it though and can't try now with a 24+h one
rendering.
Ingo
--
Photography: http://members.home.nl/ingoogni/
Pov-Ray : http://members.home.nl/seed7/
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From: Christoph Hormann
Subject: Re: outdoor water photons (~4*14k)
Date: 29 Mar 2001 16:53:01
Message: <3AC3AEBE.6DC921C@gmx.de>
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ingo wrote:
>
> How about using photons in combination with projected_through and
> lightgroups. Never tried it though and can't try now with a 24+h one
> rendering.
>
That sounds feasible, but creating a right 'projecting object' is probably
not that easy in most cases. Furthermore as i understand things it would
be visible in the scene, because you can't create 'only photons' light
sources (maybe that would be a useful addition too).
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3AC### [at] gmxde...
>
> After seeing Chris Huff's bucket photons i tried some tests for using
> photons on large water surfaces in outdoor scenes.
>
> Using large objects with photons turned out to be quite slow and therefore
> i tried to split up the water surface into parts where photons are
> calculated and where not.
How about a quick tutorial?
Mick
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From: Christoph Hormann
Subject: Re: outdoor water photons (~4*14k)
Date: 30 Mar 2001 03:18:10
Message: <3AC44141.C706CA96@gmx.de>
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Mick Hazelgrove wrote:
>
> How about a quick tutorial?
>
I don't think i have gotten far enough with photons for that yet, these
tests mainly use the settings Chris Huff used for his buckets. Most of
the photon settings are yet quite unknown to me.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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In article <3AC44141.C706CA96@gmx.de>, Christoph Hormann
<chr### [at] gmxde> wrote:
> I don't think i have gotten far enough with photons for that yet, these
> tests mainly use the settings Chris Huff used for his buckets. Most of
> the photon settings are yet quite unknown to me.
I'm not sure what settings you mean, all I did was turn them on and
specify a spacing...
--
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/
<><
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Chris Huff wrote:
>
> > I don't think i have gotten far enough with photons for that yet, these
> > tests mainly use the settings Chris Huff used for his buckets. Most of
> > the photon settings are yet quite unknown to me.
>
> I'm not sure what settings you mean, all I did was turn them on and
> specify a spacing...
>
Exactly this, i never took the time to find out how actually you set up
photons correctly so i just copied your photon{} blocks and played a bit
with the spacing.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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