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https://issues.apache.org/jira/browse/LUCENE-6759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14709579#comment-14709579
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Karl Wright commented on LUCENE-6759:
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I wound up discovering that the delta between a shape and the XYZBounds that
might be returned for a shape was more than 10x 1.5e-12. That's not a number
I can increase MINIMUM_RESOLUTION to, unfortunately.
The cause of the delta is that very same case of a very small circle on or
about z=0. The delta between the geocircle's plane and the maxz value may only
be 1e-16, but if the circle is small enough that delta translates to a delta in
Z of 5e-11 or so, which is way outside the MINIMUM_RESOLUTION in z.
The solution I'm exploring now is to simply add a "fudge factor" to all bounds
values. This fudge factor is designed to cover any deltas due to error values
being magnified in this way. So far (beasting round 20) it seems to be
working. I may also reduce MINIMUM_RESOLUTION to a lower value if this seems
to be effective for all of our test cases.
> Integrate lat/long BKD and spatial 3d, part 2
> ---------------------------------------------
>
> Key: LUCENE-6759
> URL: https://issues.apache.org/jira/browse/LUCENE-6759
> Project: Lucene - Core
> Issue Type: New Feature
> Reporter: Michael McCandless
> Attachments: LUCENE-6699.patch
>
>
> This is just a continuation of LUCENE-6699, which became too big.
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