Hello guys,

Does anyone know if there is a hair simulation include file or macros file
for povray? I have tried chris colefax's one, but I'm looking for something
else, perhaps something that does the same Shave and Haircut.

Thanks in advance

Fidel.

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Fidel viegas <fid### [at] artrecognitioncouk> wrote:
> Does anyone know if there is a hair simulation include file or macros file
> for povray? I have tried chris colefax's one, but I'm looking for something
> else, perhaps something that does the same Shave and Haircut.

  I think that some people have developed some grass-creation macros (which
are probably more limited in functionality), but AFAIK there's no other
hair-creation utilities for POV-Ray other than Colefax's one.

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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in article 3d4a9b97@news.povray.org, Warp at war### [at] tagpovrayorg wrote on
2/8/02 3:47 pm:

> Fidel viegas <fid### [at] artrecognitioncouk> wrote:
>> Does anyone know if there is a hair simulation include file or macros file
>> for povray? I have tried chris colefax's one, but I'm looking for something
>> else, perhaps something that does the same Shave and Haircut.
> 
> I think that some people have developed some grass-creation macros (which
> are probably more limited in functionality), but AFAIK there's no other
> hair-creation utilities for POV-Ray other than Colefax's one.


Well, I think that I'll stick to Colefax's utility.
Thanks for the tip.

Fidel.

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Warp inspired the electrons to say:

> Fidel viegas <fid### [at] artrecognitioncouk> wrote:
>> Does anyone know if there is a hair simulation include file or macros
>> file for povray? I have tried chris colefax's one, but I'm looking for
>> something else, perhaps something that does the same Shave and Haircut.
> 
>   I think that some people have developed some grass-creation macros
>   (which
> are probably more limited in functionality), but AFAIK there's no other
> hair-creation utilities for POV-Ray other than Colefax's one.
> 

Hey,

where can I find these grass-creation macros/functions?

Many thanks,
Christian.

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Christian Parpart wrote:
>Warp inspired the electrons to say:
>
>> Fidel viegas <fid### [at] artrecognitioncouk> wrote:
>>> Does anyone know if there is a hair simulation include file or macros
>>> file for povray? I have tried chris colefax's one, but I'm looking for
>>> something else, perhaps something that does the same Shave and Haircut.
>>
>>   I think that some people have developed some grass-creation macros
>>   (which
>> are probably more limited in functionality), but AFAIK there's no other
>> hair-creation utilities for POV-Ray other than Colefax's one.
>>
>
>Hey,
>
>where can I find these grass-creation macros/functions?
>
>Many thanks,
>Christian.
>

Chris Colefax's Home page is
http://www.geocities.com/SiliconValley/Lakes/1434/

Should find what you need there.

Mike

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Christian Parpart <cpa### [at] surakwarenet> wrote:
> where can I find these grass-creation macros/functions?

  Here are some links:

http://www.oyonale.com/ressources/english/sources01.htm
http://runevision.com/3d/include/include.asp
http://www.spiritone.com/~english/cyclopedia/grass.html

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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I've written a small macro which generates a CSG-Hair
made of spheres and cylinders some time ago. What you
need to do is use the vector-function trace() and grab the
position and surface normal from there, then use those
to place a hair. With some loops you could easily grow
some beard or fur (you'll find an image on my homepage in
the Standard Gallery).

I think Chris' include is suited for meshes only.

Regards,

Tim

--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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Tim Nikias <tim### [at] gmxde> wrote:
> I've written a small macro which generates a CSG-Hair
> made of spheres and cylinders some time ago. What you
> need to do is use the vector-function trace() and grab the
> position and surface normal from there, then use those
> to place a hair.

  That does not necessarily cover the entire surface of the object.

> I think Chris' include is suited for meshes only.

  And bicubic patches.

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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Warp ingeniously wrote:
>   That does not necessarily cover the entire surface of the object.

Not necessarily, you're right, but with some good algorithms
you could (probably not very easily though) sample positions
on the surface, using the bounding box, creating positions inside
the object, shooting traces around...
Would make an interesting project, I assume.

Regards,

Tim
--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html
Email: Tim### [at] gmxde

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