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https://issues.apache.org/jira/browse/LUCENE-6196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karl Wright updated LUCENE-6196:
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    Attachment: LUCENE-6196-additions.patch

> Include geo3d package, along with Lucene integration to make it useful
> ----------------------------------------------------------------------
>
>                 Key: LUCENE-6196
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6196
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: modules/spatial
>            Reporter: Karl Wright
>            Assignee: David Smiley
>         Attachments: LUCENE-6196-additions.patch, LUCENE-6196_Geo3d.patch, 
> ShapeImpl.java, geo3d-tests.zip, geo3d.zip
>
>
> I would like to explore contributing a geo3d package to Lucene.  This can be 
> used in conjunction with Lucene search, both for generating geohashes (via 
> spatial4j) for complex geographic shapes, as well as limiting results 
> resulting from those queries to those results within the exact shape in 
> highly performant ways.
> The package uses 3d planar geometry to do its magic, which basically limits 
> computation necessary to determine membership (once a shape has been 
> initialized, of course) to only multiplications and additions, which makes it 
> feasible to construct a performant BoostSource-based filter for geographic 
> shapes.  The math is somewhat more involved when generating geohashes, but is 
> still more than fast enough to do a good job.



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