> On 08/10/12 09:19, B. Gimeno wrote:
>> Just missing the coins of two colors.
>
>    Yes, I purposely omitted it... I'm way too lazy. But it would not be
> difficult, given the way the coins are done: I just have to create two
> concentric heightfields for each coin side, instead of just one.
>

Why two heightfields? You just need a cylindrical pattern switching from 
one metal texture to the other at the right radius.
texture{cylindrical texture_map{[0.75 Golden_Texture][0.75 
Silvery_Texture]}}

> --
> Jaime

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On 08/10/12 23:55, Alain wrote:
> Why two heightfields? You just need a cylindrical pattern switching
> from one metal texture to the other at the right radius.
> texture{cylindrical texture_map{[0.75 Golden_Texture][0.75
> Silvery_Texture]}}

   Ah... yes, of course. And with the actual number of heightfields
already present on the scene, it would be much more efficient.

--
Jaime

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Jaime Vives Piqueres <jai### [at] ignoranciaorg> wrote:
> Hi All:
>
>    Sorry for the misleading subject... I couldn't resist. ;)

Nice coins. They have a pleasing thickness you don't always find with real ones
(not in the US, anyway). The render quality is good, too, especially the image
with the coins spilled onto a granite plane. One could easily mistake it for a
photograph.

> So, for this scene, I setup a LUA script to make 5 piles of different
> coins, and then sent a ball on their way...

Uncle Scrooge would be p1ss3d!

> Now, I just have to make better heightfields for the coins... the
> current ones using webdings.ttf are not very convincing.

I've got one coin in my meager collection with a similar level of quality: it's
gold-colored with an eagle ringed by twenty stars on one side, and the words "No
Cash Value" on the other ;) Perhaps bas-reliefs could be made by blurring the
symbols' height maps and masking them with their sharp versions?

BTW, I was never able to create decent bump maps from my other coins. They were
either too scratched, or too reflective. I need some sort of removable substance
that will hide the reflective surfaces without diminishing all the details, like
a thin paint or some face makeup. A new paint brush would also help... it might
be time for another haircut :D

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On 19/10/12 23:36, Samuel Benge wrote:
> Nice coins. They have a pleasing thickness you don't always find with
> real ones (not in the US, anyway). The render quality is good, too,
> especially the image with the coins spilled onto a granite plane. One
> could easily mistake it for a photograph.

   Yes, I guess I made them a bit more thick than usual in real coins, at
least comparing with the euro coins I've at hand. I also think that I
raised too much the relief, but I like it...

> Uncle Scrooge would be p1ss3d!

   I didn't know the original name of this character... back then, in
Spain there was a tendency to translate *everything*, and he was called
"El Tio Gilito" here (thankfully these days at least the names aren't
translated, or Homer Simpson would have ended as Homero Simones, or
something like that...).

> I've got one coin in my meager collection with a similar level of
> quality: it's gold-colored with an eagle ringed by twenty stars on
> one side, and the words "No Cash Value" on the other ;)

   Yes, that's what I was referring to... they look a bit like these
"on-purpose" fake coins (specially at first, before I started using the
new albedo specular, which helped a lot making them look more metallic).

> Perhaps bas-reliefs could be made by blurring the symbols' height
> maps and masking them with their sharp versions?

   Hmmm... should try that.

> BTW, I was never able to create decent bump maps from my other coins.
> They were either too scratched, or too reflective. I need some sort
> of removable substance that will hide the reflective surfaces without
> diminishing all the details, like a thin paint or some face makeup. A
> new paint brush would also help... it might be time for another
> haircut :D

   I know what you mean... been there too. ;) But finally I've given up
and decided it was not worth the effort to scan real coins... instead, I
searched for some dingbats fonts to make my virtual ones more interesting.

   BTW, did you try this other trick? :

   http://www.mdartford.com/?p=453

   I was tempted to try it just with coffee, as there is always a cup
somewhere on my table... :)


--
Jaime

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Jaime Vives Piqueres <jai### [at] ignoranciaorg> wrote:
>    BTW, did you try this other trick? :
>
>    http://www.mdartford.com/?p=453

Clever solution. I occasionally think of ways to make something like that work
with my scanner, but haven't come up with anything useful. Besides, such a
method would still require that I paint my coins.

>    I was tempted to try it just with coffee, as there is always a cup
> somewhere on my table... :)

I'm fairly certain that you'll need a more effective light-attenuating medium
than coffee. Oil dyed with soot, maybe? Pressing a thin sheet of clear plastic
onto the coin might also be a good idea to avoid photographing reflected light
from the liquid's uneven surface.

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