Off the top of my head, it seems that you could probably specify a visibility flag,
like
so:

#declare cutaway=x

The x in this case would represent weather or not you were doing a cutaway
perspective.
You can then (for portions of the object that would be entirely obscured), insert a
simple
#if ... #endif structure to eliminate these shapes entirely.  Then, when you insert
the
bounding box, there are less objects accounted for that are not rendered.

I don't know how much faster that will go, but it's something to experiment with, at
any
rate.

jon### [at] apcnet wrote:

> Hopefully somebody out there can help wit this.
>
> As a part of some of my scenes i'm working on, I want to have a cutaway iew.

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