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https://issues.apache.org/jira/browse/LUCENE-7056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15183399#comment-15183399
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Karl Wright commented on LUCENE-7056:
-------------------------------------
FWIW, I wrestled with naming for quite a long time but could find nothing
better to distinguish the 2d world from the 3d one. And there may well be an
attempt to add altitude to geo3d someday as well, which would confuse everyone
to no end.
The best I could come up with used map projection, e.g. 2D = "cartesian" and 3D
= "spherical". But "spherical" is also misleading since ellipsoids are
described too. Argh.
> Spatial3d/Geo3d should have zero runtime dependencies
> -----------------------------------------------------
>
> Key: LUCENE-7056
> URL: https://issues.apache.org/jira/browse/LUCENE-7056
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/spatial3d
> Reporter: David Smiley
> Assignee: David Smiley
> Fix For: 6.0
>
> Attachments: LUCENE_7056__split_spatial3d_package.patch,
> LUCENE_7056__split_spatial3d_package.patch
>
>
> This is a proposal for the "spatial3d" module to be purely about the
> shape/geometry implementations it has. In Lucene 5 that's actually all it
> has. In Lucene 6 at the moment its ~76 files have 2 classes that I think
> should go elsewhere: Geo3DPoint and PointInGeo3DShapeQuery. Specifically
> lucene-spatial-extras (which doesn't quite exist yet so lucene-spatial) would
> be a suitable place due to the dependency. _Eventually_ I see this module
> migrating elsewhere be it on its own or a part of something else more
> spatial-ish. Even if that never comes to pass, non-Lucene users who want to
> use this module for it's geometry annoyingly have to exclude the Lucene
> dependencies that are there because this module also contains these two
> classes.
> In a comment I'll suggest some specifics.
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