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Posted to dev@lucene.apache.org by "Ignacio Vera (JIRA)" <ji...@apache.org> on 2018/01/28 11:04:00 UTC
[jira] [Updated] (LUCENE-8140) Checks for coplanarity when creating
polygons shows numerical issues
[ https://issues.apache.org/jira/browse/LUCENE-8140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ignacio Vera updated LUCENE-8140:
---------------------------------
Attachment: LUCENE-8140.patch
> Checks for coplanarity when creating polygons shows numerical issues
> --------------------------------------------------------------------
>
> Key: LUCENE-8140
> URL: https://issues.apache.org/jira/browse/LUCENE-8140
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/spatial3d
> Reporter: Ignacio Vera
> Priority: Major
> Attachments: LUCENE-8140.patch
>
>
> Coplanarity checks in GeoPolygonFactory shows numerical errors when the distance between two points is very small compared to the distance of the other two points. The situation is as follows:
> Having three points A, B, & C and the distance between A & B is very small compared to the distance between A & C, then the plane AC contains all points (co-planar) but the plane defined by AB does not contain C because of numerical issues. This situation makes some polygons fail to build.
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