> Hello again! I just want to thank you for your Metal and Media texture
> contributions [see our e-mail from 11/11/13]. I promise you will see them in
> action soon, shortly after I am done with improving my blob placement engine
> used in my Snow, Moss and Corrosion macros. :)
>
> The way this macro works is by encapsulating the emitting media in a local
> sphere with intervals 2 and samples 10, 100, which avoids some of the issues I
> have experienced with global atmospheric media, in terms of undesired
> interactions and render time. I will inspect the link you sent further, however.
>
> Do you know if the source for that image is available? There is a smoothness in
> the media which may solve or augment some issues I am working on at the moment.
>
> Ian
>
>
>

As the default sampling method for media is method 3, using intervals 
with a value larger than 1 have very bad effec on the rendering time. 
Also, as the documentation state, "Too many intervals can lead to 
artifacts, and POV will create more intervals if it needs them."
The default is 1 and should be left at that.

Also, samples 10, 100 is the same as samples 10. ONLY the first value is 
used and the second is silently ignored.

Similarly, ratio, been needed to determine the relative weight of the 
intervals, no longer have any object and is not used.
The same apply to confidance and variance as they are used to decide if 
you need more samples for an interval or not.

The default values are:
method 3
samples 10
intervals 1

variance is NOT used
confidance is NOT used
ratio is NOT used



Alain

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