ASF subversion and git services commented on LUCENE-7906:

Commit 18e1b40b1c4a15379da865fef05f9a58a2dbdcbf in lucene-solr's branch 
refs/heads/master from [~kwri...@metacarta.com]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=18e1b40 ]

LUCENE-7918: Revamp the API for composites so that it's generic and useful for 
many kinds of shapes.  Committed (as was LUCENE-7906) on behalf of Ignacio Vera.

> Spatial relationship between Geoshapes
> --------------------------------------
>                 Key: LUCENE-7906
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7906
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/spatial3d
>            Reporter: Ignacio Vera
>            Assignee: Karl Wright
>         Attachments: LUCENE-7906-AreaShape.patch, LUCENE-7906.patch
> Hi,
> Working with geosahpes and trying to resolve spatial relationships between 
> them I came accross a big limitation when trying to solve the relationship 
> between two geopolygons. This object does not expose the internal structure. 
> In particular at some point, it is necessary to check if one polygon 
> intersects the edges of the other polygon which currently is not possible as 
> edges are not exposed.
> To be able to perform such operation it can be several options. The ones I 
> can think of are:
> 1) Expose the edges of the polygon ( and probably the notable points for the 
> edges) adding getters in the GeoPolygon interface. Easy to implement and 
> leave users the responsability of coding the spatial relationship.
> 2) Extends GeoPolygon interface to extends geoarea and leave the object make 
> the spatial relationship. 
> 3) Extends GeoShape  interface so all shapes can infer the spatial 
> relationship with other GeoShapes.
> I might be bias as my interest is in 2d Shapes in the unit sphere and there 
> might be some cases which what I propose cannot be implemented or are againts 
> the aim of the library.
> What do you think?
> Cheers,
> Ignacio

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