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Karl Wright commented on LUCENE-8157: ------------------------------------- I cannot look at this until much later in the week. Please wait until then before going ahead with any solution. Computing sidedness is, as you know, trivial when already-constructed planes are involved. Please explain why precision is a problem when doing that. A simple example should suffice. > GeoPolygon factory fails in recognize convex polygon > ---------------------------------------------------- > > Key: LUCENE-8157 > URL: https://issues.apache.org/jira/browse/LUCENE-8157 > Project: Lucene - Core > Issue Type: Bug > Components: modules/spatial3d > Reporter: Ignacio Vera > Priority: Major > Attachments: LUCENE-8157-test.patch, LUCENE-8157.patch > > > When a polygon contains three consecutive points which are nearly co-planar, > the polygon factory may fail to recognize the concavity/convexity of the > polygon. I think the problem is the way the sideness for a polygon edge is > calculated. It relies in the position of the next point in respect of the > previous polygon edge which fails on the case explained above because of > numerical imprecision. The result is that sideness is messed up. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org