"Thomas de Groot" <t.d### [at] internlDOTnet> wrote:
> The gap at the base of the ribbon can be filled I think,  if you scale down
> the skullcap a bit before growing the hair. Typically, I scaled it at 99%
> intuitively, without being aware of the gap.

That's a good idea.

> The twists are something FlyerX mentioned in his answer above. He is
> experimenting with tubes now and that might be an excellent alternative.
>
> Thomas

Oops, I guess I missed that part about the twists.

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"Thomas de Groot" <t.d### [at] internlDOTnet> wrote:
> This is an ugly image. Never mind. There are a couple of puzzling features.
>
> I used here Janet's hair maps, uv-scaled x500 along u, and on fairly wide
> ribbons (default Poseray values). Other values might give better results of
> course.
>
> Puzzling feature 1: The background shines through the figure! Not only the
> hair but also the underlying skin. I had noticed this in a much earlier
> experiment but forgot about it.
>
> Puzzling feature 2: the transparency at the hair tips casts shadows on the
> underlying skin.

I'd be curious to see this rendered without any uv scaling.

> Additional comment: I am still not sure about the usefulness of the ribbon
> roots. They are detached from the hair proper. Why not grow the hair
> directly from the line origin?

I don't understand the point of the root material either. It just assigns
the first face a new material. The ribbons still start at the same spot
with or without it.

Janet

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"Janet" <par### [at] attnet> schreef in bericht 
news:web.472092d6c64416986697168f0@news.povray.org...
>
> I'd be curious to see this rendered without any uv scaling.

I had been carried away by my enthousiasm to manipulate the uv's :-)
Here is the same, without scaling and without ribbon roots. The textures 
looks indeed much better. However, the puzzling features remain.... :-(

>
> I don't understand the point of the root material either. It just assigns
> the first face a new material. The ribbons still start at the same spot
> with or without it.

Indeed. That is what I was also wondering about...

Thomas

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Attachments:
Download 'PoserFiguretest.png' (235 KB)

Preview of image 'PoserFiguretest.png'

The figure without hair transparency map renders correctly as far as the 
backgropund is concerned. So what goes wrong with the transparency map?

This is the material code as generated by Poseray (comments added by me):

#declare p_map10=pigment {image_map{jpeg "C:\....\Janet_hair.jpg" 
interpolate 2 transmit all 0 filter all 0} }
#declare p_map11=pigment {image_map{jpeg "C:\....\Janet_trans.jpg" 
interpolate 2 }}

#declare Hair__opaque=
texture{ pigment{ p_map10} //this is the hair map
        finish{specular 0.5019608 roughness 0.00286312 ambient rgb <0,0,0> 
diffuse 0.8  reflection{0 metallic} conserve_energy}}

#declare Hair_=
material{
texture{  pigment_pattern{ p_map11} //this is the transparency map
texture_map{[0 pigment{Clear}]
            [1 Hair__opaque]
           }}
}


Somebody with a smart idea??? :-)

Thomas

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Attachments:
Download 'PoserFiguretest.png' (237 KB)

Preview of image 'PoserFiguretest.png'

Thomas de Groot nous apporta ses lumieres en ce 2007/10/26 03:48:
> "Janet" <par### [at] attnet> schreef in bericht 
> news:web.472092d6c64416986697168f0@news.povray.org...
>> I'd be curious to see this rendered without any uv scaling.
> 
> I had been carried away by my enthousiasm to manipulate the uv's :-)
> Here is the same, without scaling and without ribbon roots. The textures 
> looks indeed much better. However, the puzzling features remain.... :-(
> 
>> I don't understand the point of the root material either. It just assigns
>> the first face a new material. The ribbons still start at the same spot
>> with or without it.
> 
> Indeed. That is what I was also wondering about...
> 
> Thomas
> 
> 
> 
You still see trough his head. Is that what puzzles you?

-- 
Alain
-------------------------------------------------
You know you've been raytracing too long when you see the movie credits going by 
and instead of seeing Lenses by Panaflex it always seems to say Lens Effects by 
Chris Colefax.
Ken Tyler

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"Alain" <ele### [at] netscapenet> schreef in bericht 
news:4721e90e$1@news.povray.org...
>>
> You still see trough his head. Is that what puzzles you?
>

Yes indeed!

Thomas

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comment reserved until we know if this is a self portrait.

alphaQuad wants to upload new mesh for experimentation.

sorry had to be sed.

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Mmm, bacon for hair. (Sorry, couldn't resist.)

- --
William Tracy
afi### [at] gmailcom -- wtr### [at] calpolyedu

You know you've been raytracing too long when other people's Images
directories contain N00D G1F$ downloaded from the Net. Your Images
directory contains raytraces that you upload *to* the Net.
    -- Jeff Lee
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"alphaQuad" <alp### [at] earthlinknet> schreef in bericht 
news:web.472246b5c644169862b5d7be0@news.povray.org...
> comment reserved until we know if this is a self portrait.
>
> alphaQuad wants to upload new mesh for experimentation.
>
> sorry had to be sed.
>

Of course it is a self portrait! All my figures are self portraits one way 
or another :-)

Thomas

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"William Tracy" <wtr### [at] calpolyedu> schreef in bericht 
news:4722a491@news.povray.org...
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Mmm, bacon for hair. (Sorry, couldn't resist.)
>

That makes chewing the ends of your hair or beard so enjoyable (although 
somewhat nauseating...)   :-)

Thomas

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