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From "Karl Wright (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-7906) Spatial relationship between Geoshapes
Date Wed, 26 Jul 2017 13:28:02 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-7906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16101664#comment-16101664
] 

Karl Wright commented on LUCENE-7906:
-------------------------------------

{quote}
My qiestion is, is there any issue to implement intersects in the circle as:
{quote}

[~ivera] Are you using "p" when you mean "circlePlane"?  This may work for circles, but it
would need to be thoroughly tested.

{quote}
On another topic, I am having problems with GeoComplexPolygon. It seems they way I have implemented
and the more efficient way of intersects with plane on the class give different results. I
tried to implement an IntersectorShapeIterator but some of my test were failing. I need to
have a closer look into that.
{quote}

I am not sure quite what you mean here?  Can you give me a snippet of code?


> 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.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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