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https://issues.apache.org/jira/browse/LUCENE-8257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16440488#comment-16440488
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ASF subversion and git services commented on LUCENE-8257:
---------------------------------------------------------

Commit 8b0ac122e652a48c77fab81ba17d3923db16a968 in lucene-solr's branch 
refs/heads/branch_6x from [~kwri...@metacarta.com]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=8b0ac12 ]

LUCENE-8257: All edges have a backing plane, so edge membership doesn't bleed 
through to the opposite side of the world.


> GeoComplexPolygon fails when points are near identical
> ------------------------------------------------------
>
>                 Key: LUCENE-8257
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8257
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/spatial3d
>            Reporter: Ignacio Vera
>            Assignee: Karl Wright
>            Priority: Major
>         Attachments: LUCENE-8257.patch
>
>
> When a polygon have two consecutive points very close to each other but not 
> numerically identical, we can get wrong results because planes defining that 
> edge intersects somewhere else on the world. At that point the following 
> check is evaluated to true:
> {code:java}
> if (edge.plane.evaluateIsZero(thePointX, thePointY, thePointZ) && 
> edge.startPlane.isWithin(thePointX, thePointY, thePointZ) && 
> edge.endPlane.isWithin(thePointX, thePointY, thePointZ)) {
>   return false;
> }{code}
>  



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