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I think I've finally got a feel for RC4 sslt ... used here on the
interior_texture to /try/ to give an appearance of depth, played around
with different ior values then settled on 2.9 (porcelain) ... also tried
the new "albedo" feature to tune the diffuse and specular properties.
The radiosity didn't turn out too bad either!
On another note ... Anyone know how to give then shell walls thickness?
If you're up to the challenge, I got the objects from here:
http://www.econym.demon.co.uk/isotut/shells.htm
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![shells.png](/povray.binaries.images/attachment/%3C4ed2fd06%40news.povray.org%3E/shells.png?ttop=443866&toff=1900&preview=1)
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On 28-11-2011 4:15, Jim Holsenback wrote:
> I think I've finally got a feel for RC4 sslt ... used here on the
> interior_texture to /try/ to give an appearance of depth, played around
> with different ior values then settled on 2.9 (porcelain) ... also tried
> the new "albedo" feature to tune the diffuse and specular properties.
> The radiosity didn't turn out too bad either!
>
> On another note ... Anyone know how to give then shell walls thickness?
> If you're up to the challenge, I got the objects from here:
> http://www.econym.demon.co.uk/isotut/shells.htm
Very nice. Two comments.
The interior is perhaps a bit too much like silver? It could maybe use
some iridescence.
The left-hand shell looks to me more like the inner cast of a fossil
one. Are open windings like these found in living shells? Just a thought.
Thomas
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On 11/28/2011 03:30 AM, Thomas de Groot wrote:
> On 28-11-2011 4:15, Jim Holsenback wrote:
>> I think I've finally got a feel for RC4 sslt ... used here on the
>> interior_texture to /try/ to give an appearance of depth, played around
>> with different ior values then settled on 2.9 (porcelain) ... also tried
>> the new "albedo" feature to tune the diffuse and specular properties.
>> The radiosity didn't turn out too bad either!
>>
>> On another note ... Anyone know how to give then shell walls thickness?
>> If you're up to the challenge, I got the objects from here:
>> http://www.econym.demon.co.uk/isotut/shells.htm
>
> Very nice. Two comments.
>
> The interior is perhaps a bit too much like silver? It could maybe use
> some iridescence.
>
> The left-hand shell looks to me more like the inner cast of a fossil
> one. Are open windings like these found in living shells? Just a thought.
Thanks, great minds think alike ... after I'd posted, iridescence came
to mind. As for the openings, the two shells (right) I've seen RL
examples very similar ... can't say that I've seen ones like the left
one, but thought it was interesting enough to include
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Am 28.11.2011 13:24, schrieb Jim Holsenback:
>> The interior is perhaps a bit too much like silver? It could maybe use
>> some iridescence.
>>
>> ...
>
> Thanks, great minds think alike ... after I'd posted, iridescence came
> to mind.
To be honest I wouldn't recommend. Iridescence has always been broken
(and hasn't been fixed) in several respects, being very troublesome with
advanced lighting conditions (e.g. it doesn't respect the falloff of
spotlights). You may be better off with an AOI-based texture.
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On 28-11-2011 16:07, clipka wrote:
> Am 28.11.2011 13:24, schrieb Jim Holsenback:
>
>>> The interior is perhaps a bit too much like silver? It could maybe use
>>> some iridescence.
>>>
>>> ...
>>
>> Thanks, great minds think alike ... after I'd posted, iridescence came
>> to mind.
>
> To be honest I wouldn't recommend. Iridescence has always been broken
> (and hasn't been fixed) in several respects, being very troublesome with
> advanced lighting conditions (e.g. it doesn't respect the falloff of
> spotlights). You may be better off with an AOI-based texture.
That's a thought indeed. I did not remember the status of iridescence in
version 3.7, but aoi would do fine I guess.
Thomas
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On 28-11-2011 13:24, Jim Holsenback wrote:
As for the openings, the two shells (right) I've seen RL
> examples very similar ... can't say that I've seen ones like the left
> one, but thought it was interesting enough to include
>
Fair enough. We do not need to reproduce RL in all its aspects do we? ;-)
Thomas
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On 11/28/2011 10:07 AM, clipka wrote:
> Am 28.11.2011 13:24, schrieb Jim Holsenback:
>
>>> The interior is perhaps a bit too much like silver? It could maybe use
>>> some iridescence.
>>>
>>> ...
>>
>> Thanks, great minds think alike ... after I'd posted, iridescence came
>> to mind.
>
> To be honest I wouldn't recommend. Iridescence has always been broken
> (and hasn't been fixed) in several respects, being very troublesome with
> advanced lighting conditions (e.g. it doesn't respect the falloff of
> spotlights). You may be better off with an AOI-based texture.
Thanks for the irid fix, I was able to get a fairly decent
"mother-of-pearl" ... also used albedo, and updated area_illumination
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Am 03.12.2011 15:35, schrieb Jim Holsenback:
> Thanks for the irid fix, I was able to get a fairly decent
> "mother-of-pearl" ... also used albedo, and updated area_illumination
Looks great!
To see my changes to POV-Ray help people get good results without too
much hassle, that's what makes my day.
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On 3-12-2011 15:35, Jim Holsenback wrote:
> Thanks for the irid fix, I was able to get a fairly decent
> "mother-of-pearl" ... also used albedo, and updated area_illumination
[drools]
Yeah! That's it exactly :-)
Thomas
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