Mr schrieb:
> Does the min extent and max extent thing still require some margin? Comments in
> the macro say this is because Pov has difficulties adjusting tight bounding
> boxes, so I wondered if that hadn't been solved already in the current beta
> with all the work that has been done...?

Not sure what you mean, but if your question is "do min_extent and 
max_extent still return a box larger than absolutely necessary in 
certain circumstances (e.g. cylinders not aligned with either of the 
three axes)", then yes: This is still the case, has been the case with 
3.6 already, and I assume it will remain so.

POV-Ray will /never/ be able to guarantee that for all object types the 
min_extent / max_extent values are as "tight" as theoretically possible. 
With this being an unsurmountable fact, I don't expect anyone to invest 
any significant effort into addressing this for /some/ object types.

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