Am 18.06.2018 um 03:12 schrieb jr:
> hi,
> 
> clipka <ano### [at] anonymousorg> wrote:
>> Whatever you're trying to accomplish; maybe if you let us know we might
>> be able to bounce some ideas ;)
> 
> appreciated, thanks.
> 
> "the idea" is very simple, I would like to animate some visible, emissive media
> objects such that they move through other, not directly seen (contained) media.
> the effect I'm after is that the additive effect of the differently coloured
> media when intersecting should reveal the outline of the "hidden" objects
> through the colour change(s).
> 
> hope that parses.  ;-)

I think it does.

Did you try using one `difference` and one `intersection` of the
container objects in question, with different media?

Or you could use one `merge` of the objects with the normal media "A",
and one `intersection` with a media "B-A" (IIRC you can have negative
emission, absorption or even scattering).

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