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"Hugo" <hua### [at] post3 teledk> wrote in message news:3c638db2@news.povray.org...
>
<snip>
Hmm, very different method, but very similiar to Rune's "fur" texture. His looks
like velvet too...
http://rsj.mobilixnet.dk/3d/goodies/goodies.html
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"andrel linnenbank" <a.c### [at] amcuvanl> wrote in message
news:3C62FE97.F02251B2@amc.uva.nl...
> Looks great either as short haired fur or velvet.
> I would never have thought of using a negative IOR.
<snip>
> But if the POV developers allows fysically impossible
> values, who am I to complain.
I don't know a link to any info, but I remember reading about some highly
ionised gas, plasma, or similar, etc that had a negative index of
refraction. I'll look into it. As another interesting point, I read a few
weeks ago about a reasearch group who had found a material with such high
IOR properties that it actually stopped the light dead - ie reduced it
velocity to zero and suspended the photons in a gas - which makes it very
useful for optical computers.
Jim
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here are some links for negative IOR and 'slow' light
http://physicsweb.org/article/world/14/9/12 -IOR
http://physicsweb.org/article/world/14/9/8 - slow light
Jim
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Sponge like or soft rubber covered by the mouse pad covering material...??
Simon Adameit wrote:
> I used an IOR of -1 together with scattering media type 5 to create this fur
> effect but I can't jugde if it is worth the rendering time compared to a fur
> texture, so what do you think?
>
> [Image]
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"Simon Adameit" <gom### [at] gmxde> wrote:
> I used an IOR of -1 together with scattering media type 5 to create this fur
> effect but I can't jugde if it is worth the rendering time compared to a fur
> texture, so what do you think?
Very nice image, but could you please post the complete source for
this scene?
Thanks
Sven
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Yes, please!
I'll render it on a falling piece of fabric that i've got here. (It's
triangle mesh but it should be possible.)
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