in news:web.3e70ca66907276e0a3d219970@news.povray.org Jettero Heller 
wrote:

> Actually I want for the media to be the
> precise shape of the halo object in question...

If your shape can be described with a function (think isosurface) you can 
use that same function as a pattern for density.

Another option could be to render thin slices of your shape, blurr each 
image (or maybe render with focal blurr) or postprocess them otherwise. 
Then turn all the images into a single df3 density file (there is a 
tga2df3 tool somewhere on the web). Use this as a pattern for your 
density.

Ingo

p.s. It would be realy nice if somebody wrote a 3d-convolution tool for 
df3 files. I tried it with Python but it isn't the most suitable tool for 
it. Processing took lots of memory and ages.

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