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> I think it looks pretty realistic, but do you have any suggestions on how I
> could improve it?
I've worked in a big paint shop where they only painted color tests on
paper for a given Car company...
Anyway, I've seen cars, and I've seen fresh car paint...
This really look realistic, though I would give a much much more fine
noise or graininess, and the noise should go darker and lighter also...
(more contrast)
This is probably because there is a layer beneath the paint that is
silver and is noisy...
Anway, nice work!
Xilo
--
Dedicated to audio/visual and interactive artwork.
http://www.geocities.com/simonlemieux/
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Yes it's very nice. Have you tried with radiosity and HDR lighting, because
you'll need it sooner or later? Even if you spend a lot of time, fine-tuning
the texture for simple lighting, you may have to do it again, when you
change the light. That's just my experience. :o) Also, based on the glance
I had at your files, I see that you're not using gamma correction. This may
be a deliberate choice, otherwise ...mm.. it will change some things again.
Let me know if you have questions.. I'll try to help.
Regards,
Hugo
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It works fine with radiosity, because it gets it's ambient brightness from
the #default statement so I can just switch on/off ambient lighting without
modifying the material itself :) However it does require a light source in
the scene, because it uses specular highlights to get the metallic and
glitter efffects.
Besides which it all works based on the pigment you give it, so a lot of
tuning (particularly brightness for gamma, radiosity, HDR) can be done using
the colour and light sources in the scene it's being used in.
But now you mention it I've been meaning to try a scene using HDR, and I
think I'll use this texture in my first test :)
--
Tek
http://www.evilsuperbrain.com
"Hugo Asm" <hua### [at] post3 teledk> wrote in message
news:3ec24b03@news.povray.org...
> Yes it's very nice. Have you tried with radiosity and HDR lighting,
because
> you'll need it sooner or later? Even if you spend a lot of time,
fine-tuning
> the texture for simple lighting, you may have to do it again, when you
> change the light. That's just my experience. :o) Also, based on the
glance
> I had at your files, I see that you're not using gamma correction. This
may
> be a deliberate choice, otherwise ...mm.. it will change some things
again.
>
> Let me know if you have questions.. I'll try to help.
>
> Regards,
> Hugo
>
>
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"Xilo Musimene" <xil### [at] hotpopcom> wrote in message
news:3EC### [at] hotpopcom...
> This really look realistic, though I would give a much much more fine
> noise or graininess,
Well, as with all grain effects, the anti-aliasing and focal blur will alter
the appearance of the grain if it's very fine. I chose the size of grain so
that it gives the right impression without being so small that it's just
random noise, but obviously it can be scaled to suit the situation.
> and the noise should go darker and lighter also... (more contrast)
This is one of the options in the metallic macro, I prefer this low-noise
setting but I confess that's more based on taste than on reference material
:)
> Anway, nice work!
> Xilo
Thank you
--
Tek
http://www.evilsuperbrain.com
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Ohhh, that should look nice. Please post when you've rendered it!
Harold
"Tek" <tek### [at] evilsuperbraincom> wrote in message
news:3ec25f09$1@news.povray.org...
> It works fine with radiosity, because it gets it's ambient brightness from
> the #default statement so I can just switch on/off ambient lighting
without
> modifying the material itself :) However it does require a light source in
> the scene, because it uses specular highlights to get the metallic and
> glitter efffects.
>
> Besides which it all works based on the pigment you give it, so a lot of
> tuning (particularly brightness for gamma, radiosity, HDR) can be done
using
> the colour and light sources in the scene it's being used in.
>
> But now you mention it I've been meaning to try a scene using HDR, and I
> think I'll use this texture in my first test :)
>
> --
> Tek
> http://www.evilsuperbrain.com
>
>
> "Hugo Asm" <hua### [at] post3teledk> wrote in message
> news:3ec24b03@news.povray.org...
> > Yes it's very nice. Have you tried with radiosity and HDR lighting,
> because
> > you'll need it sooner or later? Even if you spend a lot of time,
> fine-tuning
> > the texture for simple lighting, you may have to do it again, when you
> > change the light. That's just my experience. :o) Also, based on the
> glance
> > I had at your files, I see that you're not using gamma correction. This
> may
> > be a deliberate choice, otherwise ...mm.. it will change some things
> again.
> >
> > Let me know if you have questions.. I'll try to help.
> >
> > Regards,
> > Hugo
> >
> >
>
>
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I was just about to post a request for this very thing... Looks like someone
has already worked out how to do it... and very convincing it is too!
Cool :-)
Andrew.
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Very attractive ... It looks almost like an airbrush job to me. Neat.
Aaron
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Tek wrote:
>
>I think it looks pretty realistic, but do you have any suggestions on how I
>could improve it?
>
>--
>Tek
>http://www.evilsuperbrain.com
>
Wow, that looks nice!
I can't think of any way you could improve this, it looks very accurate.
perhaps you could use ifndef to automaticly set things like color or the
#default statment if the user forgets to, but these are issues about usage.
The effect works brilliently.
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It looks cool on smoothly shaded pigments too, so I might try an airbrush-style
image :)
--
Tek
http://www.evilsuperbrain.com
"Aaron Gillies" <no### [at] spamcom> wrote in message news:3ec29a46@news.povray.org...
> Very attractive ... It looks almost like an airbrush job to me. Neat.
>
> Aaron
>
>
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Here's a version with radiosity and HDR. Like I said the metallic effect
requires a light source, so this needed a bit of tweaking to make the light
source match up to roughly the position of the sun in the HDR image without
interfering too much with the radiosity. I also turned off the sharp specular
highlight that was on the gloss coating 'cause it's not needed with such a
realistic reflection image.
Basically it looks good if most of your lighting comes from light sources, if it
doesn't then you'll need to mess around creating some lights just for this
object. But that's what I did here and I think it's worth the effort.
And while we're on the subject, does anyone know if it's theoretically possible
to get specular radiosity interaction? I know pov can't do it, but as far as I
can see it should be possible to do a specular calculation on the radisoity
samples. It would be slow but still much better than true blurred reflections.
--
Tek
http://www.evilsuperbrain.com
Post a reply to this message
Attachments:
Download 'metal hdr.jpg' (33 KB)
Preview of image 'metal hdr.jpg'
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