/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. 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, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.lucene.spatial3d.geom;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
public class GeoConvexPolygonTest {
@Test
public void testPolygonPointWithin() {
GeoConvexPolygon c;
GeoPoint gp;
c = new GeoConvexPolygon(PlanetModel.SPHERE, -0.1, -0.5);
c.addPoint(0.0, -0.6, false);
c.addPoint(0.1, -0.5, false);
c.addPoint(0.0, -0.4, false);
c.done(false);
// Sample some points within
gp = new GeoPoint(PlanetModel.SPHERE, 0.0, -0.5);
assertTrue(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, 0.0, -0.55);
assertTrue(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, 0.0, -0.45);
assertTrue(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, -0.05, -0.5);
assertTrue(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, 0.05, -0.5);
assertTrue(c.isWithin(gp));
// Sample some nearby points outside, and compute distance-to-shape for them as well
gp = new GeoPoint(PlanetModel.SPHERE, 0.0, -0.65);
assertFalse(c.isWithin(gp));
assertEquals(0.05,c.computeOutsideDistance(DistanceStyle.ARC,gp),1e-12);
assertEquals(0.05,c.computeOutsideDistance(DistanceStyle.NORMAL,gp),1e-3);
assertEquals(0.05,c.computeOutsideDistance(DistanceStyle.LINEAR,gp),1e-3);
gp = new GeoPoint(PlanetModel.SPHERE, 0.0, -0.35);
assertFalse(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, -0.15, -0.5);
assertFalse(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, 0.15, -0.5);
assertFalse(c.isWithin(gp));
// Random points outside
gp = new GeoPoint(PlanetModel.SPHERE, 0.0, 0.0);
assertFalse(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, Math.PI * 0.5, 0.0);
assertFalse(c.isWithin(gp));
gp = new GeoPoint(PlanetModel.SPHERE, 0.0, Math.PI);
assertFalse(c.isWithin(gp));
}
@Test
public void testPolygonBounds() {
GeoConvexPolygon c;
LatLonBounds b;
c = new GeoConvexPolygon(PlanetModel.SPHERE, -0.1, -0.5);
c.addPoint(0.0, -0.6, false);
c.addPoint(0.1, -0.5, false);
c.addPoint(0.0, -0.4, false);
c.done(false);
b = new LatLonBounds();
c.getBounds(b);
assertFalse(b.checkNoLongitudeBound());
assertFalse(b.checkNoTopLatitudeBound());
assertFalse(b.checkNoBottomLatitudeBound());
assertEquals(-0.6, b.getLeftLongitude(), 0.000001);
assertEquals(-0.4, b.getRightLongitude(), 0.000001);
assertEquals(-0.1, b.getMinLatitude(), 0.000001);
assertEquals(0.1, b.getMaxLatitude(), 0.000001);
}
}