Frank napsal(a):
> Hi,
> 
> I have a large .df3 file I visualize by using it as a media density. I want to
> postprocess that density after loading it into povray. For example, set
> everything in the density that is smaller (or larger) than a threshold to zero
> and rescale the rest.
> 
> Effectively, I want to visualize only density values in the interval from
> [0.2,0.3], say. Of course, I could do this outside and save a scaled .df3 right
> away, but since this is part of a movie and the interval changes (it is used as
> a lens to let you go through the materials in the volume), it would mean a lot
> of wasted diskspace - the .df3 is really big.
> 
> Ideally, I would like to specify a transfer function that maps a density value
> in a voxel to an emission value in that voxel. Any ideas how I can do this in
> povray? I'm using the latest beta.
> 
> Frank
> 
> 
> 
use a waveform for the density

-- 
You know you've been raytracing too long when...
you start thinking up your own "You know you've been raytracing too long 
when..." sigs (I did).
-Johnny D

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