Wasn't it JC (Exether) who wrote:
>Rune wrote:
>> JC (Exether) wrote:
>>
>>>The hair is missing some brilliance
>>
>>
>> Nothing a little post-processing can't handle... ;)
>>
>> Do you mean something like this?
>>
>> Rune
>> --
>> 3D images and anims, include files, tutorials and more:
>> rune|vision:  http://runevision.com **updated Jan 29**
>> POV-Ray Ring: http://webring.povray.co.uk
>
>Yes, it's an improvement I think.
>But I was more thinking about individual phongs on the hair, it's just
>an idea though, it might not be really better.

It doesn't seem to work very well with phong. I guess the phong highlights
don't work very well alongside the fake highlights that are already painted
on the image map. To get it to work with phong I think that the texture map
would have to be recreated without highlights and there'd probably need to
be a normal map.

One thing that does help a little is turning up the lighting so that the
painted highlights become fully white rather than grey, but then the dark
parts of image tend to get a bit too bright.

I finally hit on the attached result (no post processing) using a rather odd
POV technique. What I was trying to do was to multiply the brightness of the
image map, in the same way that I might write pigment{rgb <a,b,c>*1.5} to
brighten a colour, but the syntax doesn't work for image maps. I ended up
using an average pigment with a negative weight black entry.

For comparison, the wig stand pigment is {rgb 1}but the faked highlights of
the hair need to be significantly whiter.

--
Mike Williams

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Attachments:
Download 'ShinyHair.jpg' (54 KB)

Preview of image 'ShinyHair.jpg'

Mike Williams wrote:
> What I was trying to do was to multiply the
> brightness of the image map, in the same way
> that I might write pigment{rgb <a,b,c>*1.5}
> to brighten a colour, but the syntax doesn't
> work for image maps.

What about turning up the diffuse value in the finish?

> I ended up using an average pigment with a
> negative weight black entry.

Interesting method. :)

Rune
--
3D images and anims, include files, tutorials and more:
rune|vision:  http://runevision.com **updated Jan 29**
POV-Ray Ring: http://webring.povray.co.uk

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Wasn't it Rune who wrote:
>Mike Williams wrote:
>> What I was trying to do was to multiply the
>> brightness of the image map, in the same way
>> that I might write pigment{rgb <a,b,c>*1.5}
>> to brighten a colour, but the syntax doesn't
>> work for image maps.
>
>What about turning up the diffuse value in the finish?

I would never have thought of that. It looks even better.

-- 
Mike Williams
Gentleman of Leisure

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