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LUCENE-8245: Handle parallel planes case properly.

This commit is contained in:
Karl Wright 2018-04-11 02:53:51 -04:00
parent e8f862ea44
commit 8e77892443
1 changed files with 3 additions and 0 deletions
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3
lucene/spatial3d/src/java/org/apache/lucene/spatial3d/geom/GeoComplexPolygon.java
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@ -603,6 +603,9 @@ class GeoComplexPolygon extends GeoBasePolygon {
//System.out.println(" Computing crossings between "+envelopePlane+" and ["+edge.startPoint+"->"+edge.endPoint+"]");
final GeoPoint[] unboundedIntersectionPoints = envelopePlane.findIntersections(planetModel, edge.plane);
if (unboundedIntersectionPoints == null) {
return null;
}
// Go through the intersection points one at a time. Notes:
// (1) So that we don't double-count, we can only include at most one point in the result per intersection.
// (2) Single-solution results imply that the plane was not crossed. The only time we consider them is if the edge ends on the plane, in which case we count it as a crossing.