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List:       lucene-dev
Subject:    [jira] Updated: (LUCENE-2359) CartesianPolyFilterBuilder doesn't
From:       "Grant Ingersoll (JIRA)" <jira () apache ! org>
Date:       2010-03-31 21:06:27
Message-ID: 282563518.615731270069587244.JavaMail.jira () brutus ! apache ! org
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     [ https://issues.apache.org/jira/browse/LUCENE-2359?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
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Grant Ingersoll updated LUCENE-2359:
------------------------------------

    Attachment: LUCENE-2359.patch

Fix.  Will commit today or tomorrow.  Going to double check logic again.

> CartesianPolyFilterBuilder doesn't handle edge case around the 180 meridian
> ---------------------------------------------------------------------------
> 
> Key: LUCENE-2359
> URL: https://issues.apache.org/jira/browse/LUCENE-2359
> Project: Lucene - Java
> Issue Type: Bug
> Components: contrib/spatial
> Affects Versions: 2.9, 2.9.1, 2.9.2, 3.0, 3.0.1
> Reporter: Grant Ingersoll
> Assignee: Grant Ingersoll
> Priority: Minor
> Attachments: LUCENE-2359.patch
> 
> 
> Test case:  
> Points all around the globe, plus two points at 0, 179.9 and 0,-179.9 (on each side \
> of the meridian).  Then, do a Cartesian Tier filter on a point right near those \
> two.  It will return all the points when it should just return those two. The \
> flawed logic is in the else clause below: {code}
> if (longX2 != 0.0) {
> 		//We are around the prime meridian
> 		if (longX == 0.0) {
> 			longX = longX2;
> 			longY = 0.0;
> 	shape = getShapeLoop(shape,ctp,latX,longX,latY,longY);
> 		} else {//we are around the 180th longitude
> 			longX = longX2;
> 			longY = -180.0;
> 			shape = getShapeLoop(shape,ctp,latY,longY,latX,longX);
> 	}
> {code}
> Basically, the Y and X values are transposed.  This currently says go from longY \
> (-180) all the way around  to longX which is the lower left longitude of the box \
> formed.  Instead, it should go from the lower left long to -180.

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