slongay nous illumina en ce 2008-10-24 13:58 -->
> Hi, I am currently trying to render large trees in POV-Ray. I have attached an
> image of a prototype scene so you can see what I mean. The scene used was
> created by Gilles Tran and is available here:
> http://www.oyonale.com/modeles.php?lang=en&page=38
> 
> I have just replaced his tree with one of mine.
> 
> The issue I am having is that with so many leaves light does not propagate into
> the crown of the tree. In the picture I have posted I used a %50 transparent
> leaf texture which helps a little but also blurs everything and would look bad
> for close up shots.
> 
> What I am looking for is a way to make a texture that allows light to pass
> through it while not having the object transparent.
> 
> Does anyone know how to do this in POV-Ray?
> 
> Thanks
> -Steve
> 
> 
> ------------------------------------------------------------------------
> 
Nice image. I've seen trees done by professionals using big buck$ applications 
that are far from your's in both quality and realism.

You can use leaf shaped objetcs filled with a scattering and an absorbing media: 
SLOW
You can use an object with an ior and an averaged surface normal just like for 
blured reflection. If your object have two faces, make sure that your normals 
count stay low, like no more than 16 or so.
If you use radiosity, try increasing the recursion_level.

-- 
Alain
-------------------------------------------------
"We returned the General to El Salvador, or maybe Guatemala, it's difficult to 
tell from 10,000 feet."           -- Anon.

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