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Stephen <mca### [at] aol com> wrote:
> Keep showing off. :)
Ok, here are some failed attempts.
Metals are notoriously difficult...
Norbert
Post a reply to this message
Attachments:
Download 'metal tests2.jpg' (595 KB)
Preview of image 'metal tests2.jpg'
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On 5/10/2016 1:58 PM, Norbert Kern wrote:
> Stephen <mca### [at] aolcom> wrote:
>
>> Keep showing off. :)
>
>
> Ok, here are some failed attempts.
> Metals are notoriously difficult...
>
Failed?
You've got high standards in QC.
I particularly like the pair on the right. Shiny.
--
Regards
Stephen
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Am 10.05.2016 um 16:26 schrieb Stephen:
> On 5/10/2016 1:58 PM, Norbert Kern wrote:
>> Stephen <mca### [at] aolcom> wrote:
>>
>>> Keep showing off. :)
>>
>>
>> Ok, here are some failed attempts.
>> Metals are notoriously difficult...
>>
>
> Failed?
>
> You've got high standards in QC.
> I particularly like the pair on the right. Shiny.
The top left for me, anytime!
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Stephen <mca### [at] aolcom> wrote:
> Failed?
>
> You've got high standards in QC.
> I particularly like the pair on the right. Shiny.
They don't give me the impression of a living transforming metal.
But I downloaded one scene with three metal materials in pb.scene-file.
Perhaps it's the color. Colored metallic elements are rare (copper, gold, (pure)
caesium and bismuth (pale reddish)). Even the "new" transuranium elements aren't
colored - they are all silvery metals (even "Eka-Gold). The metals, which come
near the description given in the tale are those from Bohrium to Darmstadtium
which are noble metals with densities near 40. Of course they are extremely
radioactive...
But perhaps a metal intelligence with deforming abilities is able to deal with
nuclear forces?
Norbert
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clipka <ano### [at] anonymousorg> wrote:
> The top left for me, anytime!
Hi Christoph,
in the case you are interested -
// Jerzy Karczmarczuk Textures, continuation
https://karczmarczuk.users.greyc.fr/TEACH/Imagerie.old/Txtur.html
#macro T1650 (col)
#declare bz = pigment {bozo scale 0.3}
#declare m0 = 0;
#declare stp = 0.08;
#declare s1 = stp*0.5;
#declare stri =
color_map {
#while (m0 < 1)
[m0 srgb <col.x,col.y,col.z>]
[m0+s1 srgb 0.15*<col.x,col.y,col.z>]
#declare m0 = m0+stp;
#end
}
material {
texture {
pigment {
bz
color_map {stri}
}
normal {
pigment_pattern {
bz
color_map {stri}
}
3
}
finish {
brilliance 4
diffuse 0
emission 0
metallic
specular 0.8
roughness 0.025
reflection {1 metallic}
}
}
interior {ior 1.5}
scale 0.55
}
#end
Norbert
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"Norbert Kern" <nor### [at] t-onlinede> wrote:
etal intelligence with deforming abilities is able to deal with
> nuclear forces?
I have lost my entire paper library, and would like to find a copy of Asimov's
tale of the goose who laid the golden egg. It's brilliantly written, and
following up on your speculation, you'd find a very interesting read. :)
Excellent work.
I agree with Stephen - if those are "failed" attempts... :O
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"Bald Eagle" <cre### [at] netscapenet> wrote:
> I have lost my entire paper library, and would like to find a copy of Asimov's
> tale of the goose who laid the golden egg. It's brilliantly written, and
> following up on your speculation, you'd find a very interesting read. :)
I just read a summary of Asimov's tale - very funny!
Personally I think intelligence is a ubiquitary phenomenon and is easy to create
track. E.g. far senses like vision are needed - how to implement those?
In nature you had cellular caves with light sensitive cells and an information
transport. If you are a flexible noble metal, you can tempoarily build
oxygen-based semiconductor layers and so on.
Anyway - if you interact with an environment, at first you have to transform
yourself constantly, adapting surface layers (more normals than pigments in
povray?) and secondly you move by liquifying parts of your structure (even more
normals!)
This is, what I want to see in a good material...
> Excellent work.
> I agree with Stephen - if those are "failed" attempts... :O
Here is a better attempt - not necessarily pretty, but imho a bit more
plausible...
Norbert
Post a reply to this message
Attachments:
Download 'metal tests3.jpg' (679 KB)
Preview of image 'metal tests3.jpg'
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On 5/10/2016 8:28 PM, Norbert Kern wrote:
> "Bald Eagle" <cre### [at] netscapenet> wrote:
>
>> I have lost my entire paper library, and would like to find a copy of Asimov's
>> tale of the goose who laid the golden egg. It's brilliantly written, and
>> following up on your speculation, you'd find a very interesting read. :)
>
> I just read a summary of Asimov's tale - very funny!
>
> Personally I think intelligence is a ubiquitary phenomenon and is easy to create
> and implement. Imho Valentin Braitenberg or Dietrich Dörner were on the right
> track. E.g. far senses like vision are needed - how to implement those?
> In nature you had cellular caves with light sensitive cells and an information
> transport. If you are a flexible noble metal, you can tempoarily build
> oxygen-based semiconductor layers and so on.
>
Seems reasonable.
> Anyway - if you interact with an environment, at first you have to transform
> yourself constantly, adapting surface layers (more normals than pigments in
> povray?) and secondly you move by liquifying parts of your structure (even more
> normals!)
> This is, what I want to see in a good material...
>
You are frightening me. :-)
Too much of an insight.
>> Excellent work.
>> I agree with Stephen - if those are "failed" attempts... :O
>
> Here is a better attempt - not necessarily pretty, but imho a bit more
> plausible...
>
>
Well, shiny isn't everything.
It is hard to see your texture. It is obscured by the geometry. Quite
amazing.
--
Regards
Stephen
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Stephen <mca### [at] aolcom> wrote:
> You are frightening me. :-)
> Too much of an insight.
Only some nerdy thoughts.
Really interesting are the social consequences, if small separated metal parts
can act independant from each other...
> Well, shiny isn't everything.
> It is hard to see your texture. It is obscured by the geometry. Quite
> amazing.
I learned decades ago - pulverized metals are darker than solids, non-metals get
brighter (band gaps bla, bla..). This is hard to realize within a povray
material, but you are right - fractalized or micronized metals aren't very
shiny. To my knowlwdge this is especially true for noble metals.
To obscure structure and texture contributions is one of my few standard tricks.
Here is the basic little fractal...
Norbert
Post a reply to this message
Attachments:
Download 'structure.jpg' (317 KB)
Preview of image 'structure.jpg'
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On 5/10/2016 10:16 PM, Norbert Kern wrote:
> Stephen <mca### [at] aolcom> wrote:
>
>> You are frightening me. :-)
>> Too much of an insight.
>
> Only some nerdy thoughts.
> Really interesting are the social consequences, if small separated metal parts
> can act independant from each other...
>
I will let you know when I finish reading Stephen Baxter's Proxima.
There is/are one of those in it.
>> Well, shiny isn't everything.
>> It is hard to see your texture. It is obscured by the geometry. Quite
>> amazing.
>
> I learned decades ago - pulverized metals are darker than solids, non-metals get
> brighter (band gaps bla, bla..). This is hard to realize within a povray
> material, but you are right - fractalized or micronized metals aren't very
> shiny. To my knowlwdge this is especially true for noble metals.
>
> To obscure structure and texture contributions is one of my few standard tricks.
> Here is the basic little fractal...
>
I recognised the shape but the texture you used fits the fractal like a
glove. It introduces subtleties to what you see. so you don't see it as
a texture but as the object. (Sorry if my age group is showing)
It is one of the best fractal images I've seen and it is monochrome.
--
Regards
Stephen
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