All the posts in p.b.i inspired me...

For ages I've been meaning to buy some interesting looking lumps of rock as
inspiration for CG, since a lot of these rocks have an appearance quite unlike
anything I've ever seen rendered. Well following all the nice sub-surface images
I decided to finally go and buy a couple of these things. This is my first
attempt to render one of them and it's come out pretty good.

It's a piece of "red agate", so naturally I used pov's agate pigment :) I've
used 2 medias, one for scattering and one for absorption, so the absorbtion
isn't affected by the colour.

...And that's about all I can think of to say about it.

Anyway, what do you think? :)
-- 
Tek
www.evilsuperbrain.com

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Attachments:
Download 'crystal_sss.m1v.mpg' (444 KB)

That is very nice.  I love the patterns and colors that agates can produce.
Being able to see this animated really bring out the translucency, colors,
and other media effects.  Nice job.

Skip

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Tek, that is awesome! Not enough people animate volumetrics. Animated, 
you can really see what's going on with the media. A little turbulence 
would go a long way for this, but still it's fairly realistic.

Tek wrote:

> All the posts in p.b.i inspired me...
> 
> For ages I've been meaning to buy some interesting looking lumps of rock as
> inspiration for CG, since a lot of these rocks have an appearance quite unlike
> anything I've ever seen rendered. Well following all the nice sub-surface images
> I decided to finally go and buy a couple of these things. This is my first
> attempt to render one of them and it's come out pretty good.
> 
> It's a piece of "red agate", so naturally I used pov's agate pigment :) I've
> used 2 medias, one for scattering and one for absorption, so the absorbtion
> isn't affected by the colour.
> 
> ...And that's about all I can think of to say about it.
> 
> Anyway, what do you think? :)
> 


-- 
Samuel Benge

stb### [at] hotmailcom
See my website@: http://www.goldrush.com/~abenge/Top/index.html

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"Samuel Benge" <sbe### [at] hotmailcom> wrote in message
news:3FD### [at] hotmailcom...
> Tek, that is awesome! Not enough people animate volumetrics. Animated,
> you can really see what's going on with the media. A little turbulence
> would go a long way for this, but still it's fairly realistic.

It already has a little turbulence :) I agree it would look more interesting
with a bit more, but the real one I've got has a fairly smooth pattern so I
wanted to copy that.

I have another rock that's much more tubulent, plus has lots of internal
reflecting facets, so I'm going to try making that next :)

-- 
Tek
www.evilsuperbrain.com

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On Fri, 5 Dec 2003 22:57:12 -0000, "Tek" <tek### [at] evilsuperbraincom> wrote:

>but the real one I've got has a fairly smooth pattern so I
>wanted to copy that.

Very Nice, but all the real ones get chipped :-}

Regards
        Stephen

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Why does the agate pattern change (at the bottom) as a function of rotation
angle?

Jim

"Tek" <tek### [at] evilsuperbraincom> wrote in message
news:3fd0ecb2@news.povray.org...
> All the posts in p.b.i inspired me...
>
> For ages I've been meaning to buy some interesting looking lumps of rock
as
> inspiration for CG, since a lot of these rocks have an appearance quite
unlike
> anything I've ever seen rendered. Well following all the nice sub-surface
images
> I decided to finally go and buy a couple of these things. This is my first
> attempt to render one of them and it's come out pretty good.
>
> It's a piece of "red agate", so naturally I used pov's agate pigment :)
I've
> used 2 medias, one for scattering and one for absorption, so the
absorbtion
> isn't affected by the colour.
>
> ...And that's about all I can think of to say about it.
>
> Anyway, what do you think? :)
> -- 
> Tek
> www.evilsuperbrain.com
>
>
>

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Well there's a few effects that look sort of like it's changing. Firstly it's a
fully 3d pattern so as we move round it we can see parallax within the shape.
This is distorted a little because the object is refractive. And the refraction
causes internal reflections which can faintly be seen in some places. Plus
there's reflections of the environment causing some more movement on the
surface.

So I expect what you've noticed is a combination of some of those effects. The
pattern certainly isn't actually moving.

-- 
Tek
www.evilsuperbrain.com

"Jim Kress" <pov### [at] kressworkscom> wrote in message
news:3fd28aa5@news.povray.org...
> Why does the agate pattern change (at the bottom) as a function of rotation
> angle?
>
> Jim
>
> "Tek" <tek### [at] evilsuperbraincom> wrote in message
> news:3fd0ecb2@news.povray.org...
> > All the posts in p.b.i inspired me...
> >
> > For ages I've been meaning to buy some interesting looking lumps of rock
> as
> > inspiration for CG, since a lot of these rocks have an appearance quite
> unlike
> > anything I've ever seen rendered. Well following all the nice sub-surface
> images
> > I decided to finally go and buy a couple of these things. This is my first
> > attempt to render one of them and it's come out pretty good.
> >
> > It's a piece of "red agate", so naturally I used pov's agate pigment :)
> I've
> > used 2 medias, one for scattering and one for absorption, so the
> absorbtion
> > isn't affected by the colour.
> >
> > ...And that's about all I can think of to say about it.
> >
> > Anyway, what do you think? :)
> > -- 
> > Tek
> > www.evilsuperbrain.com
> >
> >
> >
>
>

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