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https://issues.apache.org/jira/browse/LUCENE-6487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14564075#comment-14564075
 ] 

ASF subversion and git services commented on LUCENE-6487:
---------------------------------------------------------

Commit 1682359 from [~dsmiley] in branch 'dev/branches/lucene6487'
[ https://svn.apache.org/r1682359 ]

LUCENE-6487: Geo3D with WGS84: randomize GeoPointTest lat-lon round-trip

> Add WGS84 capability to geo3d support
> -------------------------------------
>
>                 Key: LUCENE-6487
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6487
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/spatial
>            Reporter: Karl Wright
>         Attachments: LUCENE-6487.patch, LUCENE-6487.patch, LUCENE-6487.patch, 
> LUCENE-6487.patch
>
>
> WGS84 compatibility has been requested for geo3d.  This involves working with 
> an ellipsoid rather than a unit sphere.  The general formula for an ellipsoid 
> is:
> x^2/a^2 + y^2/b^2 + z^2/c^2 = 1



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