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https://issues.apache.org/jira/browse/LUCENE-8133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16335070#comment-16335070
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Karl Wright commented on LUCENE-8133:
-------------------------------------
Ok, what is happening is that the polygon tiling code "tries" a few things to
see if they work out. It's expecting the GeoConvexPolygon construction to be
successful when it does this. The problem is that sometimes the constructor
throws an IllegalArgumentException -- not something the code was expecting.
The solution seems to be to just catch the exception and signal that the tiling
can't be created:
{code}
try {
// No holes, for test
final GeoPolygon testPolygon = new GeoConvexPolygon(planetModel,
points, null, internalEdges, returnIsInternal);
if (testPolygon.isWithin(testPoint)) {
return null;
}
} catch (IllegalArgumentException e) {
return null;
}
{code}
[~ivera], can you extend your test case to verify that the shape produced works
properly? If that passes I will commit my fix.
> 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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