In article <3e8bf222$1@news.povray.org>, "Mael" <mae### [at] hotmailcom> 
wrote:

> I don't know if it'd be easy to implement but it could be a plus to know
> which object is intersected to allow postprocessing on limited part of the
> output. Something like
> 
> sphere { ... object_id 1 }
> box { ... object_id 2 }
> 
> f_output_iobject_id : return 1 if intersection is on the sphere, 2 for the
> box..

A better idea might be some group label.

sphere { ... object_groups "mask A", "mask B" }
box { ... object_groups "high AA" }

And then have exclude_groups and include_groups options for the filters, 
and/or filters that use the groups for other things like masks.

Hmm, a shorter possible alternate syntax:

sphere { ... }: "mask A", "mask B"
box { ... }: "high AA"

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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