Am 09.10.2017 um 23:16 schrieb David Mandelberg:
> When I render the below scene, there are some spurious black artifacts near the
> center of the red vuvuzela. Without the translation and rotation, the artifacts
> go away. I'm using POV-Ray 3.7.0 on Ubuntu 16.04.
I wouldn't be surprised if these artefacts were related to a similar
issue with 3rd-order polynomials (e.g. bezier or cubic) in the sphere
sweep primitive.
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