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* the Apache License, Version 2.0 (the "License"); you may
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* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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package org.elasticsearch.index.mapper.geo;
import org.elasticsearch.common.geo.GeoDistance;
import org.elasticsearch.common.geo.GeoPoint;
import org.elasticsearch.common.unit.DistanceUnit;
import org.elasticsearch.common.unit.DistanceUnit.Distance;
import org.elasticsearch.test.ElasticsearchTestCase;
import java.util.Arrays;
import static org.hamcrest.Matchers.lessThanOrEqualTo;
public class GeoEncodingTests extends ElasticsearchTestCase {
public void test() {
for (int i = 0; i < 10000; ++i) {
final double lat = randomDouble() * 180 - 90;
final double lon = randomDouble() * 360 - 180;
final Distance precision = new Distance(1+(randomDouble() * 9), randomFrom(Arrays.asList(DistanceUnit.MILLIMETERS, DistanceUnit.METERS, DistanceUnit.KILOMETERS)));
final GeoPointFieldMapper.Encoding encoding = GeoPointFieldMapper.Encoding.of(precision);
assertThat(encoding.precision().convert(DistanceUnit.METERS).value, lessThanOrEqualTo(precision.convert(DistanceUnit.METERS).value));
final GeoPoint geoPoint = encoding.decode(encoding.encodeCoordinate(lat), encoding.encodeCoordinate(lon), new GeoPoint());
final double error = GeoDistance.PLANE.calculate(lat, lon, geoPoint.lat(), geoPoint.lon(), DistanceUnit.METERS);
assertThat(error, lessThanOrEqualTo(precision.convert(DistanceUnit.METERS).value));
}
}
}