 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp wrote:
> Any improvement suggestions?
>
>
The shallowest but possibly most beneficial suggestion first. While the
lie of the chain is quite possible, there is usually a more random look
with the links collapsing on themselves more rather than "pulling"
against each other so consistently.
I can't settle on the scale involved here, and that affects the sense of
appropriate scale for the rusting.
I would expect more difference between the rusted areas and the worn
areas. In general I would expect fresh rust would have very little
highlight and would having a caked-on look different from tarnish.
I think the overall effect is excellent for giving a generalized sense
of rust, tarnish, and corrosion. But when you observe it to try and
identify the actual material and process involved, it starts to loose
some impact. Are we seeing, rust? Tarnish? Corrosion? Wear? Or some or
all of these in combination? I think if part of the color or finsh was
seen to vary with the changes in surface, that would probably help
enough. Or else, if we are to beleive that the surface was so
consistent in finish, maybe the rusted areas would be a little less
random, maybe be more related to the structure of the links themselves
or occur on just one side?
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
> Any improvement suggestions?
I think you need to work on the texture. The rust looks smooth and shiny.
You could make it rougher by adding a variation in the normal on a small
scale (maybe with the wrinkles or granite pattern but not scaled too big).
Maybe tighten the specular highlights. It might also help if you make it
look like small bits of the metal are "peeling" off; look at the small
hole-like things in http://www.eleganthack.com/archives/rust.jpg to see what
I mean. Sharp changes in the value of the normal pattern combined with
abrupt changes in pigment color can do that. These are just ideas, keep
tweaking it.
What is the chain for? What is the surface it's lying on and why is it
there? Right now I see an object, but if you answer these questions it might
look more like a "scene."
- Slime
[ http://www.slimeland.com/ ]
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Warp" <war### [at] tag povrayorg> schreef in bericht
news:42e23daa@news.povray.org...
> Any improvement suggestions?
>
>
Rust. Definitely. Too shiny. Imo, it should also stick out of the metal a
tiny bit, lying on it, as it were, instead of making integral part of the
metal.
Thomas
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp wrote:
> Any improvement suggestions?
Even assuming you were going for a "forged iron" look for the links (as
I guess from the color and finish), a chain wouldn't be that rough. Cut
back on the normal; you want slight imperfections, not faux leather. I
wouldn't expect an iron chain to be that dark, either.. but I know some
iron IS that dark, so I leave it to your judgement.
As for the rust... Usually, when bare iron rusts from exposure to
moisture in the air, it doesn't go in bits and pieces, it rusts all at
once. If you can find photographs of a rusty chain or something similar,
you'll probably see that it all just goes kinda dull and brownish.
The spotty kind of rust you have here is usually the result of
corrosion.. either the iron has some kind of exterior coating or finish
that wears off, or it's been splattered with water drops and then left
alone. If you want that kind of rust, you'll want a more corroded look
for the rusty areas.. pitted, chunky, fuzzy, and/or flaky. You'll also
want a really dull finish and some color variance.
-Xplo
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Xplo Eristotle <xpl### [at] infomagicnet> wrote:
> Even assuming you were going for a "forged iron" look for the links (as
> I guess from the color and finish), a chain wouldn't be that rough. Cut
> back on the normal; you want slight imperfections, not faux leather. I
> wouldn't expect an iron chain to be that dark, either.. but I know some
> iron IS that dark, so I leave it to your judgement.
> As for the rust... Usually, when bare iron rusts from exposure to
> moisture in the air, it doesn't go in bits and pieces, it rusts all at
> once. If you can find photographs of a rusty chain or something similar,
> you'll probably see that it all just goes kinda dull and brownish.
Compare it to this:
http://www.bio-vision.nl/ecards/gif/033306.jpg
--
- Warp
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Slime <fak### [at] emailaddress> wrote:
> I think you need to work on the texture. The rust looks smooth and shiny.
> You could make it rougher by adding a variation in the normal on a small
> scale (maybe with the wrinkles or granite pattern but not scaled too big).
My reference image was this:
http://www.bio-vision.nl/ecards/gif/033306.jpg
--
- Warp
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Warp" <war### [at] tagpovrayorg> wrote in message
news:42e23daa@news.povray.org...
> Any improvement suggestions?
I think it's the scale here that's the problem with the main image.
Something doesn't seem right with it to me. I dunno, try and match the scale
in that reference image somehow and see how it looks then?
I don't have a problem with the rust though, close (to me), but needs
'something', I don't know what.
~Steve~
> - Warp
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp wrote:
> Slime <fak### [at] emailaddress> wrote:
>
>>I think you need to work on the texture. The rust looks smooth and shiny.
>>You could make it rougher by adding a variation in the normal on a small
>>scale (maybe with the wrinkles or granite pattern but not scaled too big).
>
>
> My reference image was this:
>
> http://www.bio-vision.nl/ecards/gif/033306.jpg
>
Okay, so I think that in general the brownish "rust" is occuring in the
recesses and the bluish black areas are generally raised. I suppose on
the raised areas the rust either rubs off or they are more resistent to
corrosion in the first place because of compositional irregularities and
that is why they are raised. Also in some places you can see wear marks
that span a cavity without entering it. I think that is the next level
you have to take you picture to to get more realism.
When I first saw you picture I did think it suggested the sort of
cumulative rot that would happen on a chain immersed in the water a lot,
but not exclusively. So the depth of the texture didn't really throw me.
It was more the pattern if brown. As you photo shows it can be drizzled
through the overall rot and almost look like it is a property of the
material itself. But with enough observation, what the process is should
eventually be revealed. Slime shows advanced flaking from more exposure
to air. I believe, he was trying to posit "rust" with extent of the
corrosion you were evidently trying to show.
You see, you said "rust", which may have confused people, because we
generally associate that word specifically with iron oxide which is
usually caked or flaking or in a smooth thin cover but always quite matt
in finish.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp wrote:
>
> My reference image was this:
>
> http://www.bio-vision.nl/ecards/gif/033306.jpg
>
this one might be of interest
http://www.deviantart.com/view/20667736/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp wrote:
> Xplo Eristotle <xpl### [at] infomagicnet> wrote:
>
>>Even assuming you were going for a "forged iron" look for the links (as
>>I guess from the color and finish), a chain wouldn't be that rough. Cut
>>back on the normal; you want slight imperfections, not faux leather. I
>>wouldn't expect an iron chain to be that dark, either.. but I know some
>>iron IS that dark, so I leave it to your judgement.
>
>
>>As for the rust... Usually, when bare iron rusts from exposure to
>>moisture in the air, it doesn't go in bits and pieces, it rusts all at
>>once. If you can find photographs of a rusty chain or something similar,
>>you'll probably see that it all just goes kinda dull and brownish.
>
>
> Compare it to this:
>
> http://www.bio-vision.nl/ecards/gif/033306.jpg
As you can see, the metal is more brownish than black.. and while the
metal is heavily dinged, the normal you used isn't a particularly good
match.
This chain's not even particularly rusty.
-Xplo
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
