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Hi all!
I've bought myself a game of Go and would like to model a professional board
(with nice stones made of marble, wooden board etc) now. Someone recently
posted an image of a pyramid or a cube, filled with nice, marble-like media.
I've used the Search of the web-interface and have looked through the posts
residing here at home, but I'm unable to find it. Anyone got a pointer?
Aside of that, does anyone have experience with scripting/modelling some
media-driven subsurface effects, especially in the direction of marble? I do
have quiet some experience with media, but maybe there's a tried and tested
approach which would make my life easier. :-)
Regards,
Tim
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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"Tim Nikias v2.0" wrote:
> I've bought myself a game of Go and would like to model a professional board
> (with nice stones made of marble, wooden board etc) now. Someone recently
Professional stones are made from (clam) shell and slate, more everyday
stones are glass (and cheap sets are plastic). I don't think marble is
used for stones. (Example pictures:
http://www.mastersgames.com/images/orientalboard/clamshellandslate.jpg
http://ishigames.com/gostones.htm )
Regards,
Bernard
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> Professional stones are made from (clam) shell and slate, more everyday
> stones are glass (and cheap sets are plastic). I don't think marble is
> used for stones.
Heh, I guess someone misunderstood me here... :-)
If I'd be asking about actual and real stones, I would have posted to
off-topic. What I meant was modelling them in CSG, using spheres and
cylinders, filling them with media to achieve a marble-like texturing. We're
on POV-Ray newsgroups, and "general" generally applies to things related to
poving in general, or am I mistaken? :-)
Aside of that, thanks for the links, I might need them later anyway.
Regards,
Tim
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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"Tim Nikias v2.0" <tim.nikias (@) nolights.de> wrote in message
news:402443f5@news.povray.org...
> > Professional stones are made from (clam) shell and slate, more everyday
> > stones are glass (and cheap sets are plastic). I don't think marble is
> > used for stones.
>
> Heh, I guess someone misunderstood me here... :-)
>
> If I'd be asking about actual and real stones, I would have posted to
> off-topic. What I meant was modelling them in CSG, using spheres and
> cylinders, filling them with media to achieve a marble-like texturing.
We're
> on POV-Ray newsgroups, and "general" generally applies to things related
to
> poving in general, or am I mistaken? :-)
Here's a quick one-off that might help you in the right direction:
#include "colors.inc"
light_source
{
<-20, 100, -100>
color White
}
light_source
{
<20, 100, 100>
color rgb <0.2, 0.3, 0.4>
shadowless
}
camera
{
location <0, 3, -6>
look_at <0, 0, 0>
}
#declare piece =
sphere
{
<0, 0, 0>, 1
scale <1, 0.4, 1>
}
#declare white_piece =
object
{
piece
pigment
{
wrinkles
color_map
{
[0, rgbf <0.7, 0.7, 0.7, 0.1> ]
[1, rgbf <1, 1, 1, 0.1> ]
}
scale <020, 0.2, 0.2>
}
finish
{
specular 0.6
reflection 0.1
}
}
#declare black_piece =
object
{
piece
pigment
{
color rgb <0.24, 0.24, 0.24>
}
normal
{
wrinkles
scale <0.4, 0.05, 0.4>
}
finish
{
specular 0.2
reflection 0
}
}
plane
{
y, 0
pigment
{
checker rgb <0.6, 0.5, 0.4> rgb <0.5, 0.4, 0.3>
scale <2.5, 1, 2.5>
}
finish
{
specular 0.5
}
}
object { white_piece rotate 30*y }
object { white_piece rotate 2*y translate 2.5*x }
object { black_piece translate -2.5*z }
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"Tim Nikias v2.0" <tim.nikias (@) nolights.de> a écrit dans le message de
news:4023e840@news.povray.org...
> Hi all!
>
> I've bought myself a game of Go and would like to model a professional
board
> (with nice stones made of marble, wooden board etc) now. Someone recently
> posted an image of a pyramid or a cube, filled with nice, marble-like
media.
> I've used the Search of the web-interface and have looked through the
posts
> residing here at home, but I'm unable to find it. Anyone got a pointer?
This looks like Samuel Benge's image "Subsurface Scattering: A Tuesday
Mystery (21kb jpeg)" from November 26, 2003.
G.
--
**********************
http://www.oyonale.com
**********************
- Graphic experiments
- POV-Ray and Poser computer images
- Posters
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> This looks like Samuel Benge's image "Subsurface Scattering: A Tuesday
> Mystery (21kb jpeg)" from November 26, 2003.
Nope, not it. I think it was during the course of all that subsurface
scattering hype, that someone posted it. Looked terrific, very much like
marble, with lots of white/gray, some red veines (is veines spelled
correctly?).
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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> Here's a quick one-off that might help you in the right direction:
...SNIP...
Hi there, Daniel.
Thanks for the effort, but I'm actually already a rather experienced Pover
(you can see most of my images on my website, haven't been active here
lately, which may be why you've assumed me to be a newbie).
I was searching for the author of that specific image mainly because his
marble-texture, made with subsurface/media scattering, was that sort of
"awesome Rolex" type of image, and I wanted to get a hold of the codes how
he did it. I've done quiet some experimenting with media (ever tried to
convert the stacked-planes-technique to a media statement? It's fun :-) so I
was hoping for some general approach idea. Just to save the time for
experiments.
Regards,
Tim
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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"Tim Nikias v2.0" <tim.nikias (@) nolights.de> wrote in message
news:40244c7e@news.povray.org...
> > Here's a quick one-off that might help you in the right direction:
> ...SNIP...
>
> Hi there, Daniel.
>
> Thanks for the effort, but I'm actually already a rather experienced Pover
> (you can see most of my images on my website, haven't been active here
> lately, which may be why you've assumed me to be a newbie).
I'm sorry -- I'm new to this board and don't know all the people yet. Well,
it gave me an excuse to put together a quick scene anyway :-)_
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"Tim Nikias v2.0" wrote:
>
> > Professional stones are made from (clam) shell and slate, more everyday
> > stones are glass (and cheap sets are plastic). I don't think marble is
> > used for stones.
>
> Heh, I guess someone misunderstood me here... :-)
I was trying to clear up the confusion, were you asking for POV images
that would look like real professional stones (shell and slate), or
POV images that would look like marble stones (which are not used in
real life)?
The photo links were to highlight the differences between marble and
shell which have different colouring/textures etc.
Regards,
Bernard (7k)
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Tim Nikias v2.0 wrote:
> Hi all!
>
> I've bought myself a game of Go and would like to model a professional board
> (with nice stones made of marble, wooden board etc) now. Someone recently
> posted an image of a pyramid or a cube, filled with nice, marble-like media.
> I've used the Search of the web-interface and have looked through the posts
> residing here at home, but I'm unable to find it. Anyone got a pointer?
I FOUND IT!!!!
It was in p.b.a, titled "more sub-surface scattering" on 5.12.2003 by Tek.
Very beautiful interior.
Severi "Sherlock" Salminen
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Tim Nikias v2.0 <tim.nikias (@) nolights.de> wrote:
> Heh, I guess someone misunderstood me here... :-)
I think you misunderstood him...
I have never heard of go stones made of marble, so if you are going to
render stones which look like marble, they will not look like pro stones,
they will look like marble stones.
You specifically asked for a pro-stone look...
--
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -
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On Sat, 7 Feb 2004 03:18:04 +0100, "Tim Nikias v2.0" <tim.nikias (@)
nolights.de> wrote:
>(is veines spelled correctly?).
Nope! It is spelt "veins".
Regards
Stephen
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> I'm sorry -- I'm new to this board and don't know all the people yet.
Well,
> it gave me an excuse to put together a quick scene anyway :-)_
Hey, no problem. Shows off that you're a decent guy. :-)
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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> I was trying to clear up the confusion, were you asking for POV images
> that would look like real professional stones (shell and slate), or
> POV images that would look like marble stones (which are not used in
> real life)?
>
> The photo links were to highlight the differences between marble and
> shell which have different colouring/textures etc.
Ah, okay, then I misunderstood you. It seemed to me like you wanted to give
me some fotos to show how I might make them from clamshells...
Actually, I just wanted to make some marble-like stones, mainly because of
nice looks and to get some experience on how to model marble-media, so to
speak.
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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> I have never heard of go stones made of marble, so if you are going to
> render stones which look like marble, they will not look like pro stones,
> they will look like marble stones.
> You specifically asked for a pro-stone look...
Yup, my fault, see my reply to Bernard.
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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> I FOUND IT!!!!
>
> It was in p.b.a, titled "more sub-surface scattering" on 5.12.2003 by Tek.
> Very beautiful interior.
Yay, that's it! Thanks! I should have remembered that it had been an
animation, I'd probably have found it myself then...
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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> Nope! It is spelt "veins".
Good to know, thanks.
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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Tim Nikias v2.0 wrote:
>>I FOUND IT!!!!
>>
>>It was in p.b.a, titled "more sub-surface scattering" on 5.12.2003 by Tek.
>>Very beautiful interior.
>
>
> Yay, that's it! Thanks! I should have remembered that it had been an
> animation, I'd probably have found it myself then...
Yeah, right: you just talk the talk, but can't walk the walk.
;------))))
Severi S.
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"Tim Nikias v2.0" <tim.nikias (@) nolights.de> wrote in message
news:4024c2b5$1@news.povray.org...
> > I'm sorry -- I'm new to this board and don't know all the people yet.
> Well,
> > it gave me an excuse to put together a quick scene anyway :-)_
>
> Hey, no problem. Shows off that you're a decent guy. :-)
:-) Hehe, I'm thinking there are some people who aren't going agree with you
on that one :-)
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> :-) Hehe, I'm thinking there are some people who aren't going agree with
you
> on that one :-)
What would life be without controversy? Boring!
But we're getting off-topic here...
Regards,
Tim
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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"Tim Nikias v2.0" <tim.nikias (@) nolights.de> wrote in message
news:402515dd$1@news.povray.org...
> > :-) Hehe, I'm thinking there are some people who aren't going agree with
> you
> > on that one :-)
>
> What would life be without controversy? Boring!
heheh -- true
> But we're getting off-topic here...
To jump back on topic, I saw that animation you were looking for dah-ham!!!
It still baffles me how much this open-source renderer can do. The
developers are truly talented individuals.
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"Dan P" <dan### [at] yahoo com> wrote in
news:40251a84$1@news.povray.org:
> It still baffles me how much this open-source renderer can
> do.
FYI, POV-Ray is not open-source. http://www.povray.org/povlegal.html
> The developers are truly talented individuals.
>
>
Yup
--
Tom
_________________________________
The Internet Movie Project
http://www.imp.org/
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"Tom Galvin" <tom### [at] imporg> wrote in message
news:Xns948880B7A9206tomatimporg@203.29.75.35...
> "Dan P" <dan### [at] yahoocom> wrote in
> news:40251a84$1@news.povray.org:
>
> > It still baffles me how much this open-source renderer can
> > do.
>
> FYI, POV-Ray is not open-source. http://www.povray.org/povlegal.html
Ah, I read what you meant in the license and I see where the
misunderstanding is. When I say open-source, I mean that the source is
included with the product so that, if there are bugs, you can fix them
yourself instead of having to rely on the creators to. I also mean that many
people are working on it, not just one closed company headed by some
marketting guy and a middle manager who got to his job because he couldn't
code :-). Some people are going to confuse that with "free to go and make
money off of and take credit for", or something, which isn't in the spirit
of copyright and in that environment. Nobody would give release their code
because they wouldn't be acknowledged for their hard work (and writing
software is /hard/, which is why so few people can do it decently). The GNU
public license addresses this issue really well too (just like the POV-Ray
license).
> > The developers are truly talented individuals.
>
> Yup
*Raises beer glass, tink, swig* Here here.
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"Severi Salminen" <sev### [at] NOT_THISsibafi> wrote in message
news:4024afc4$1@news.povray.org...
> It was in p.b.a, titled "more sub-surface scattering" on 5.12.2003
by Tek.
> Very beautiful interior.
Near as damn it perfect. That's agate alright.
(Must.....get.....broad....ba...nd....for......p.b.a.....) ;)
Nice one Tek.
> Severi "Sherlock" Salminen
:)
~Steve~
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On Fri, 6 Feb 2004 20:16:04 +0100, "Tim Nikias v2.0" <tim.nikias (@)
nolights.de> wrote:
>Aside of that, does anyone have experience with scripting/modelling some
>media-driven subsurface effects, especially in the direction of marble?
The only advice I can give with SSS (advice no one seems to take which
I find odd since I've had great success with it) is to give the
container object an opaque interior_texture so as to avoid the fuzzy
edges and unrealistic shadows which would otherwise require a very
dense media.
Apply the same pattern that you use for the media density as a pigment
to the interior_texture, give it a low ambient, high diffuse, and
double_illuminate if possible (so that the shadows of the media are
projected on the outside surface). Radiosity also works with this
approach but is IMHO overkill if not otherwise needed for the scene.
For the finish use fresnel reflection and use a very high ior (5, 10
or more). A high brilliance, although unrealistic, brings out the
spherical shape very well, again IMHO. Other useful stuff includes a
soft phong + tight specular.
As of marble, I suggest you start with agate instead of marble for the
media density. For the texture it might be worth to try a texture map
where the veins are distinctively less reflective (in terms of
highlights, too) than the white areas.
Scratches and other imperfections are optional. It will be very cool
if you hard-code the date you release the source and make the surface
more worn with every render (i.e. based on current date/time -
date/time it was released). Just kidding :)
My fingers are itching to beat you to it :) but both this poor little
machine and myself have too much to do at the moment :(
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG e-mail : pet### [at] tagpovrayorg
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> >Aside of that, does anyone have experience with scripting/modelling some
> >media-driven subsurface effects, especially in the direction of marble?
>
> The only advice I can give with SSS (advice no one seems to take which
> I find odd since I've had great success with it) is to give the
> container object an opaque interior_texture so as to avoid the fuzzy
> edges and unrealistic shadows which would otherwise require a very
> dense media.
SNIP some more interesting ideas
Thanks for all the ideas! To be honest, I hadn't spent much thought on using
interior_texture, instead I went for ultra-realism: make the media dense
enough so that it looks real and I still get the shadows... But the approach
you mention seems to be very good and with proper tweaking could be useful,
though I'm not sure how well interior_texture works with multiple
overlapping objects etc...
At the least, I'll keep it in mind. For now, I'm working on my short movie
again, and have just coded a new particle System with Object Interaction. So
the Go-Game is on a hold for now...
Regards,
Tim
--
"Tim Nikias v2.0"
Homepage: <http://www.nolights.de>
Email: tim.nikias (@) nolights.de
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