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On Fri, 12 Nov 2004 21:21:13 -0000, "Andy Cocker"
<mai### [at] andrewcocker couk> wrote:
>>....wank up the photons ....
>
><snigger>
>
>Andy Cocker
Freudian slip or just getting senile :-)
Of course I meant "crank up the photons"
Regards
Stephen
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On Fri, 12 Nov 2004 16:40:40 -0500, "Ross" <rli### [at] everestkcnet>
wrote:
>3) buy more whiskey.
That was the correct solution. By doing that I could see that Slime is
right on both counts. The unlit shadow (?) should be uncoloured and if
I reduce the ior to 1 then all of the shadow is coloured.
I would have bet a mars bar that the shadow should have been coloured
with intense caustics.
I'll do a bit more experimenting and post later.
Regards
Stephen
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From: Alain
Subject: Re: Loss of colour in shadow when using photons. - a02a_1xb2.png
Date: 14 Nov 2004 15:37:20
Message: <4197c200$1@news.povray.org>
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Andrew the Orchid nous apporta ses lumieres ainsi en ce 2004-11-13
04:14... :
>> Correct. It is interesting how our perception of our world often
>> differs
>> from reality. When I started working on the photon code, I started
>> looking
>> more closely at real items in the real world, and I noticed that many
>> shadows of clear objects (such as a glass of water) looked very
>> different
>> than how I thought they "should" look. The reality is that much of the
>> shadow area is almost completely black. However, when we casually view
>> something like a glass of water, if we don't look carefully, our
>> brains have
>> a tendency to fill in details that really aren't there.
>
>
> Ah yes - the mind does not always perceive what is before the eye...
> (See any optical illusion for a simple proof of this concept.)
>
> Personally, I would suggest that maybe the lightsource is in the wrong
> place (and/or should be an area light - do photons respond to those?)
>
> Andrew.
You need to add "area_light on" in the light's photons block in addition
to the area_light in the light's deffinition. Otherwise, it will act as
a point light for the photons.
Alain
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On Sat, 13 Nov 2004 09:14:49 +0000, Andrew the Orchid <voi### [at] devnull>
wrote:
>Personally, I would suggest that maybe the lightsource is in the wrong
>place (and/or should be an area light - do photons respond to those?)
Whilst I now agree that the shadow should be black/grey I am still
trying to fake it, out of perversity. Where do you suggest that the
light source should be situated? Why use an area light?
Regards
Stephen
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Thanks for all your help, so have a little drink on me.
Regards
Stephen
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Attachments:
Download 'tray02j.jpg' (37 KB)
Preview of image 'tray02j.jpg'
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