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LUCENE-8445: Tighten condition when two planes are identical to prevent constructing bogus tiles when building GeoPolygons

This commit is contained in:
Ignacio Vera 2018-08-06 09:34:11 +02:00
parent 3b15be3781
commit 70a4939ab4
3 changed files with 26 additions and 2 deletions
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3
lucene/CHANGES.txt
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@ -176,6 +176,9 @@ API Changes:
Bug Fixes:
* LUCENE-8445: Tighten condition when two planes are identical to prevent constructing
bogus tiles when building GeoPolygons. (Ignacio Vera)
* LUCENE-8380: UTF8TaxonomyWriterCache inconsistency. (Ruslan Torobaev, Dawid Weiss)
* LUCENE-8164: IndexWriter silently accepts broken payload. This has been fixed

2
lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/Plane.java
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@ -2361,7 +2361,7 @@ public class Plane extends Vector {
//System.out.println("cross product magnitude = "+(cross1 * cross1 + cross2 * cross2 + cross3 * cross3));
// Should be MINIMUM_RESOLUTION_SQUARED, but that gives us planes that are *almost* parallel, and those are problematic too,
// so we have a tighter constraint on parallelism in this method.
if (cross1 * cross1 + cross2 * cross2 + cross3 * cross3 >= MINIMUM_RESOLUTION) {
if (cross1 * cross1 + cross2 * cross2 + cross3 * cross3 >= 5 * MINIMUM_RESOLUTION) {
return false;
}

23
lucene/spatial3d/src/test/org/apache/lucene/spatial3d/geom/GeoPolygonTest.java
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@ -1849,5 +1849,26 @@ shape:
assertTrue(largePolygon.isWithin(thePoint) == smallPolygon.isWithin(thePoint));
}
@Test
public void testLUCENE8445() {
//POLYGON((32.18017946378854 -17.397683785381247,49.51018758330871 -9.870219317504647,58.77903721991479 33.90553510354402,2.640604559432277 9.363173880050821,3.1673235739886286E-10 8.853669066894417E-11,0.0 -5.7E-322,4.820339742500488E-5 5.99784517213369E-7,32.18017946378854 -17.397683785381247))
final List<GeoPoint> points = new ArrayList<>();
points.add(new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(-17.397683785381247), Geo3DUtil.fromDegrees(32.18017946378854)));
points.add(new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(-9.870219317504647), Geo3DUtil.fromDegrees(49.51018758330871)));
points.add(new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(33.90553510354402), Geo3DUtil.fromDegrees(58.77903721991479)));
points.add(new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(9.363173880050821), Geo3DUtil.fromDegrees(2.640604559432277)));
points.add(new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(8.853669066894417E-11), Geo3DUtil.fromDegrees(3.1673235739886286E-10)));
points.add(new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(-5.7E-322), Geo3DUtil.fromDegrees(0.0)));
points.add(new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(5.99784517213369E-7), Geo3DUtil.fromDegrees(4.820339742500488E-5)));
final GeoPolygonFactory.PolygonDescription description = new GeoPolygonFactory.PolygonDescription(points);
final GeoPolygon polygon = GeoPolygonFactory.makeGeoPolygon(PlanetModel.SPHERE, description);
final GeoPolygon largePolygon = GeoPolygonFactory.makeLargeGeoPolygon(PlanetModel.SPHERE, Collections.singletonList(description));
//POINT(179.99999999999983 -5.021400461974724E-11)
final GeoPoint point = new GeoPoint(PlanetModel.SPHERE, Geo3DUtil.fromDegrees(-5.021400461974724E-11), Geo3DUtil.fromDegrees(179.99999999999983));
assertTrue(polygon.isWithin(point) == largePolygon.isWithin(point));
}
}