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List:       lucene-dev
Subject:    [jira] [Commented] (LUCENE-6196) Include geo3d package, along with Lucene integration to make it use
From:       "Karl Wright (JIRA)" <jira () apache ! org>
Date:       2015-01-31 0:58:36
Message-ID: JIRA.12769455.1421963554000.220269.1422665916562 () Atlassian ! JIRA
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    [ https://issues.apache.org/jira/browse/LUCENE-6196?page=com.atlassian.jira.plugin \
.system.issuetabpanels:comment-tabpanel&focusedCommentId=14299491#comment-14299491 ] 

Karl Wright commented on LUCENE-6196:
-------------------------------------

Problems have been fixed, and tests are reasonably comprehensive.


> 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: 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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