[
https://issues.apache.org/jira/browse/LUCENE-7239?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Muir resolved LUCENE-7239.
---------------------------------
Resolution: Fixed
Fix Version/s: 6.1
master
> Speed up LatLonPoint's polygon queries when there are many vertices
> -------------------------------------------------------------------
>
> Key: LUCENE-7239
> URL: https://issues.apache.org/jira/browse/LUCENE-7239
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Robert Muir
> Fix For: master, 6.1
>
> Attachments: LUCENE-7239.patch, LUCENE-7239.patch
>
>
> This is inspired by the "reliability and numerical stability" recommendations
> at the end of http://www-ma2.upc.es/geoc/Schirra-pointPolygon.pdf.
> Basically our polys need to answer two questions that are slow today:
> contains(point)
> crosses(rectangle)
> Both of these ops only care about a subset of edges: the ones overlapping a y
> interval range. We can organize these edges in an interval tree to be
> practical and speed things up a lot. Worst case is still O(n) but those
> solutions are more complex to do.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
