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https://issues.apache.org/jira/browse/LUCENE-8133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16334514#comment-16334514
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Ignacio Vera commented on LUCENE-8133:
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That is odd. I have been using the factory to build simple square polygons and
the behavior has been more like WKT, where points are defined in a counter
clockwise direction as it will be seen from the "top":
(lat,lon)-> (0 0), (0 1),(1 1), (1 0) gives you a convex polygon. Points are
CCW from the "top".
(lat,lon)-> (0 0), (1 0),(1 1), (0 1) gives you a concave polygon. Points are
CW from the "top".
Is that the opposite to what is expected? or I am messed up with directions.
[~dsmiley]: Noted, Jira tickets should not be exclusive.
> Small polygon fails with misleading error: Convex polygon has a side that is
> more than 180 degrees
> ---------------------------------------------------------------------------------------------------
>
> Key: LUCENE-8133
> URL: https://issues.apache.org/jira/browse/LUCENE-8133
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/spatial3d
> Reporter: Ignacio Vera
> Assignee: Karl Wright
> Priority: Major
> Attachments: LUCENE-8133.patch, image-2018-01-22-12-52-21-656.png,
> image-2018-01-22-12-55-17-096.png
>
>
> Hi [~karl wright],
> I am trying to create a polygon that is valid but I am getting an error which
> is probably incorrect. I think it is a problem with precision.
> I will attach a test.
>
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