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A reflective sphere on a checkered plane.
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Attachments:
Download 'Stone001.jpg' (40 KB)
Preview of image 'Stone001.jpg'
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Ooooh! 'xplain.
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"TonyB" <ben### [at] panama c-comnet> wrote :
>
> Ooooh! 'xplain.
>
Just an Isosurface with a little normal.
#declare CR = function{ pigment { crackle scale 0.5 } }
surface{
function {
(x^2+y^2+z^2)
+(CR(x, y, z)*0.5)
}
threshold 1
contained_by{ sphere{ 0,1 }} // bounding shape
scale < 2, 1, 1 >
pigment { rgb < 0.8, 0.5, 0.3 > }
normal {
gradient x
normal_map {
[0.0 bumps scale 0.2]
[0.3 crackle 1 scale 0.5]
[0.6 dents 1 scale 0.5 turbulence 1]
[1.0 marble scale 0.5 turbulence 1]
}
scale 0.25
turbulence 0.5
}
finish { phong 0.5 specular 0.5 reflection 0.25 }
} // end box
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Bill DeWitt wrote:
>
> A reflective sphere on a checkered plane.
Looks pretty cool. A couple notes:
1. Increasing the max_gradient will get rid of the black artifacts.
Whether or not you want to do this in this particular pic is up to you,
of course, since the artifacts are actually kinda neat here...
2. Some reflection blur and a low-to-medium reflect_metallic value would
probably improve it (IMO of course).
--
Xplo Eristotle
http://start.at/xplosion/
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"Xplo Eristotle" <inq### [at] unforgettablecom> wrote :
>
> 1. Increasing the max_gradient will get rid of the black artifacts.
>
Right. I did this when I moved on, but I wish I could have made those
cool ridges on purpose 8-)...
> 2. Some reflection blur and a low-to-medium reflect_metallic value would
> probably improve it (IMO of course).
Probably right, but I ended up filling it with media instead of texture.
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Bill DeWitt wrote:
> A reflective sphere on a checkered plane.
Looks like the carvings done by west coast aboriginals, but more
abstract.
Very beautiful!
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"Simon de Vet" <sde### [at] istarca> wrote :
>
> Looks like the carvings done by west coast aboriginals, but more
> abstract.
>
> Very beautiful!
>
Thank you, now I -really- wish I had done it on purpose...
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Ah, the great isosurface, I presume.
Time I get started on ridged multifractals :-)
--
___ _______________________________________________
| \ |_ <dav### [at] faricynet> <ICQ 55354965>
|_/avid |ontaine http://www.faricy.net/~davidf/
"The only difference between me and a madman is that I'm not mad." -Dali
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Oh, and please translate :-)
--
___ _______________________________________________
| \ |_ <dav### [at] faricynet> <ICQ 55354965>
|_/avid |ontaine http://www.faricy.net/~davidf/
"The only difference between me and a madman is that I'm not mad." -Dali
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"David Fontaine" <dav### [at] faricynet> wrote in message
news:38F24E3E.2FB24C34@faricy.net...
> Oh, and please translate :-)
>
Translate what? The isosurface function?
// make a pigment into a function
#declare CR = function{ pigment { crackle scale 0.5 } }
surface{
function {
// make a sphere
(x^2+y^2+z^2)
// add the crackle
+(CR(x, y, z)
// make it half as deep
*0.5)
}
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I think you can make such ridges by adding a black and white color map ti
the crackle item in the isosurface defiistion! Try something like:
color_map {
[0.0 color rgb 0]
[0.3 color rgb 0.3]
[0.3 color rgb 0]
[0.4 color rgb 0]
[0.4 color rgb 0.4]
[1.0 color rgb 1]
}
You get the idea...
Simen.
> Right. I did this when I moved on, but I wish I could have made those
>cool ridges on purpose 8-)...
>
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Bill DeWitt wrote:
> Translate what? The isosurface function?
I didn't know that was standard English. Well well, I just learned a new
word :-)
According to m-w.com, though, it's ad nauseam.
--
___ _______________________________________________
| \ |_ <dav### [at] faricynet> <ICQ 55354965>
|_/avid |ontaine http://www.faricy.net/~davidf/
"The only difference between me and a madman is that I'm not mad." -Dali
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"David Fontaine" <dav### [at] faricynet> wrote :
>
> I didn't know that was standard English. Well well, I just learned a new
> word :-)
> According to m-w.com, though, it's ad nauseam.
>
Oh... got ya. As for the spelling... It wasn't in my spell checker and I
figured it was close enough.
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On Wed, 12 Apr 2000 22:31:56 -0500, David Fontaine <dav### [at] faricynet>
wrote:
>According to m-w.com, though, it's ad nauseam.
Yup. Ablative (of circumstance) for the first person feminine.
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG e-mail : pet### [at] tagpovrayorg
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On Thu, 13 Apr 2000 22:36:50 +0300, Peter Popov <pet### [at] usanet> wrote:
>On Wed, 12 Apr 2000 22:31:56 -0500, David Fontaine <dav### [at] faricynet>
>wrote:
>
>>According to m-w.com, though, it's ad nauseam.
>
>Yup. Ablative (of circumstance) for the first person feminine.
>
Wow! I thought that was the word for those tiles they put on the outside of
re-entry vehicles.
David
----------------------------
dav### [at] cableinetcouk
http://members.vavo.com/squiffy/
http://www.hamiltonite.mcmail.com
----------------------------
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In article <0hncfs47vo5li2rhk2rb1tlp4roebecl28@4ax.com>, David
Wilkinson <dav### [at] cableinetcouk> wrote:
> >Yup. Ablative (of circumstance) for the first person feminine.
> >
> Wow! I thought that was the word for those tiles they put on the outside
> of re-entry vehicles.
From my copy of the Standard Encyclopedic Dictionary:
ablative adj. Gram.
In some inflected languages, as Latin and Sanskrit, pertaining to a case
expressing separation, position, motion from, instrumentality, etc. --
n. 1. The ablative case. 2. A word in this case.
You can see why it is used to describe a material intended to remove
heat by vaporizing away...here is what the WWWebster
Dictionary(http://www.m-w.com/cgi-bin/dictionary) says:
Main Entry: 2ab?la?tive
Pronunciation: a-'blA-tiv
Function: adjective
Date: circa 1569
1 : of or relating to ablation
2 : tending to ablate <ablative material on a nose cone>
- ab?la?tive?ly adverb
And here is the definition of "ablate"
Main Entry: ab?late
Pronunciation: a-'blAt
Function: verb
Inflected Form(s): ab?lat?ed; ab?lat?ing
Etymology: Latin ablatus (pp. of auferre to remove), from ab- + latus,
past participle of ferre -- more at UKASE, BEAR, TOLERATE
Date: 1542
transitive senses : to remove especially by cutting, abrading, or
evaporating
intransitive senses : to become ablated; especially : VAPORIZE 1
Ok, so I was bored. :-)
--
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/
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> David Fontaine <dav### [at] faricynet> wrote:
> >According to m-w.com, though, it's ad nauseam.
Peter Popov wrote:
> Yup. Ablative (of circumstance) for the first person feminine.
At my school we called it accusative (of destination), first declension
feminine.
--
Anton Sherwood *\\* br0### [at] p0b0xcom *\\* http://ogre.nu
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