[jira] [Commented] (LUCENE-6487) Add WGS84 capability to geo3d support

["Karl Wright (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-6487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14568897#comment-14568897 ] 

Karl Wright commented on LUCENE-6487:
-------------------------------------

Hi David,

As far as I am concerned, this is ready to be committed to trunk.

If you are waiting for Nicholas, I fully agree, but he's on paternity leave so it may be quite some time.  Might be better to commit and revise later, if needed.


> 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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