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LUCENE-7153: remove extra PIP copy, this is in Polygon.java now

This commit is contained in:
Robert Muir 2016-04-01 00:23:22 -04:00
parent 81c83b4431
commit cc75be53f9
2 changed files with 1 additions and 28 deletions
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2
lucene/spatial/src/java/org/apache/lucene/spatial/geopoint/search/GeoPointInPolygonQueryImpl.java
View File

@ -77,7 +77,7 @@ final class GeoPointInPolygonQueryImpl extends GeoPointInBBoxQueryImpl {
* {@link org.apache.lucene.spatial.geopoint.search.GeoPointTermsEnum#accept} method is called to match
* encoded terms that fall within the bounding box of the polygon. Those documents that pass the initial
* bounding box filter are then compared to the provided polygon using the
* {@link org.apache.lucene.spatial.util.GeoRelationUtils#pointInPolygon} method.
* {@link Polygon#contains(Polygon[], double, double)} method.
*/
@Override
protected boolean postFilter(final double lat, final double lon) {

27
lucene/spatial/src/java/org/apache/lucene/spatial/util/GeoRelationUtils.java
View File

@ -36,33 +36,6 @@ public class GeoRelationUtils {
return lat >= minLat && lat <= maxLat && lon >= minLon && lon <= maxLon;
}
/**
* simple even-odd point in polygon computation
* 1. Determine if point is contained in the longitudinal range
* 2. Determine whether point crosses the edge by computing the latitudinal delta
* between the end-point of a parallel vector (originating at the point) and the
* y-component of the edge sink
*
* NOTE: Requires polygon point (x,y) order either clockwise or counter-clockwise
*/
public static boolean pointInPolygon(double[] polyLats, double[] polyLons, double lat, double lon) {
assert polyLats.length == polyLons.length;
boolean inPoly = false;
/**
* Note: This is using a euclidean coordinate system which could result in
* upwards of 110KM error at the equator.
* TODO convert coordinates to cylindrical projection (e.g. mercator)
*/
for (int i = 1; i < polyLats.length; i++) {
if (polyLons[i] <= lon && polyLons[i-1] >= lon || polyLons[i-1] <= lon && polyLons[i] >= lon) {
if (polyLats[i] + (lon - polyLons[i]) / (polyLons[i-1] - polyLons[i]) * (polyLats[i-1] - polyLats[i]) <= lat) {
inPoly = !inPoly;
}
}
}
return inPoly;
}
/////////////////////////
// Rectangle relations
/////////////////////////