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https://issues.apache.org/jira/browse/LUCENE-8133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16335685#comment-16335685
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Karl Wright commented on LUCENE-8133:
-------------------------------------

The normalization was added because if it isn't there there are downstream 
effects; these vectors cannot be reliably used in further vector operations 
without it.


> 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, 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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