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On 4/21/21 9:27 AM, s.day wrote:
> OK, it has been a long time since I have used POV for anything but have I
> forgotten a rule about using sphere_sweeps with CSG operations?
>
> Below code has exactly the same sphere_sweep but when viewed at the lower angle
> I see artifacts:
>
I'm not aware of any rule.
The scene renders fine with the current v3.8 master branch.
You don't have a cubic sweep, but I think you are very likely(1) hitting
a closed(fixed) issue for a problem Yadgar reported and Christoph fixed
back in 2017.
https://github.com/POV-Ray/povray/issues/287
(1) - I don't have a compile handy at the fix commit to 100% confirm it.
In any case, the current v3.8 is OK.
Bill P.
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