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https://issues.apache.org/jira/browse/LUCENE-8556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16680642#comment-16680642
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Nicholas Knize commented on LUCENE-8556:
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Patch LGTM!! Thanks [~ivera]
> Tessellator: Polygons can fail when using Morton optimisation
> -------------------------------------------------------------
>
> Key: LUCENE-8556
> URL: https://issues.apache.org/jira/browse/LUCENE-8556
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/sandbox
> Affects Versions: 7.6, master (8.0)
> Reporter: Ignacio Vera
> Priority: Blocker
> Attachments: LUCENE-8556.patch, image-2018-11-02-08-48-12-898.png
>
>
> I experience some errors when processing complex polygons. I realised that if
> I disable the Morton optimisation, then the errors go away.
> I studied one of the cases and it seems that when using the optimisation, it
> is possible to create triangles with points inside of them (see picture
> attached). There is a point just on the edge of the triangle. When disabling
> the optimisation, such a triangle is not created.
>
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