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https://issues.apache.org/jira/browse/SOLR-13467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16840928#comment-16840928
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ASF subversion and git services commented on SOLR-13467:
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Commit 6a3d32728b784dbba66f6e917d6d277b915d9c72 in lucene-solr's branch
refs/heads/branch_8x from David Wayne Smiley
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=6a3d327 ]
SOLR-13467: Include the S2 Geometry lib to make it simpler to use
prefixTree="s2" on a Geo3D spatial field.
* Improved documentation on Geo3D.
* Better testing for Geo3D.
(cherry picked from commit 3a88ab616c9c8debe1f3a10e291697083eda3342)
> Spatial: Add S2 lib for more efficient Geo3D indexes
> ----------------------------------------------------
>
> Key: SOLR-13467
> URL: https://issues.apache.org/jira/browse/SOLR-13467
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: documentation, spatial
> Reporter: David Smiley
> Assignee: David Smiley
> Priority: Major
> Attachments: SOLR-13467.patch
>
>
> Here I'm adding a dependency on [Google S2 Geometry|http://s2geometry.io]
> (121KB) so that we can use {{prefixTree="s2"}} on a spatial field type that
> is using Geo3D. Lucene spatial-extras already has this dependency, albeit it
> is optional. I enhanced tests to exercise it.
> Additionally, I document here a strictness Geo3D has in which the polygon
> points must be provided in a particular order or else the interpretation of
> the shape is inverted. This so-called "right hand rule" order is somewhat
> standard but some libs (like JTS) don't care.
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