| /* |
| * 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.commons.math3.geometry.spherical.twod; |
| |
| import org.apache.commons.math3.exception.OutOfRangeException; |
| import org.apache.commons.math3.geometry.spherical.oned.Sphere1D; |
| import org.apache.commons.math3.util.FastMath; |
| import org.apache.commons.math3.util.MathUtils; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class S2PointTest { |
| |
| |
| @Test |
| public void testS2Point() { |
| for (int k = -2; k < 3; ++k) { |
| S2Point p = new S2Point(1.0 + k * MathUtils.TWO_PI, 1.4); |
| Assert.assertEquals(1.0 + k * MathUtils.TWO_PI, p.getTheta(), 1.0e-10); |
| Assert.assertEquals(1.4, p.getPhi(), 1.0e-10); |
| Assert.assertEquals(FastMath.cos(1.0) * FastMath.sin(1.4), p.getVector().getX(), 1.0e-10); |
| Assert.assertEquals(FastMath.sin(1.0) * FastMath.sin(1.4), p.getVector().getY(), 1.0e-10); |
| Assert.assertEquals(FastMath.cos(1.4), p.getVector().getZ(), 1.0e-10); |
| Assert.assertFalse(p.isNaN()); |
| } |
| } |
| |
| @Test(expected=OutOfRangeException.class) |
| public void testNegativePolarAngle() { |
| new S2Point(1.0, -1.0); |
| } |
| |
| @Test(expected=OutOfRangeException.class) |
| public void testTooLargePolarAngle() { |
| new S2Point(1.0, 3.5); |
| } |
| |
| @Test |
| public void testNaN() { |
| Assert.assertTrue(S2Point.NaN.isNaN()); |
| Assert.assertTrue(S2Point.NaN.equals(new S2Point(Double.NaN, 1.0))); |
| Assert.assertFalse(new S2Point(1.0, 1.3).equals(S2Point.NaN)); |
| } |
| |
| @Test |
| public void testEquals() { |
| S2Point a = new S2Point(1.0, 1.0); |
| S2Point b = new S2Point(1.0, 1.0); |
| Assert.assertEquals(a.hashCode(), b.hashCode()); |
| Assert.assertFalse(a == b); |
| Assert.assertTrue(a.equals(b)); |
| Assert.assertTrue(a.equals(a)); |
| Assert.assertFalse(a.equals('a')); |
| } |
| |
| @Test |
| public void testDistance() { |
| S2Point a = new S2Point(1.0, 0.5 * FastMath.PI); |
| S2Point b = new S2Point(a.getTheta() + 0.5 * FastMath.PI, a.getPhi()); |
| Assert.assertEquals(0.5 * FastMath.PI, a.distance(b), 1.0e-10); |
| Assert.assertEquals(FastMath.PI, a.distance(a.negate()), 1.0e-10); |
| Assert.assertEquals(0.5 * FastMath.PI, S2Point.MINUS_I.distance(S2Point.MINUS_K), 1.0e-10); |
| Assert.assertEquals(0.0, new S2Point(1.0, 0).distance(new S2Point(2.0, 0)), 1.0e-10); |
| } |
| |
| @Test |
| public void testSpace() { |
| S2Point a = new S2Point(1.0, 1.0); |
| Assert.assertTrue(a.getSpace() instanceof Sphere2D); |
| Assert.assertEquals(2, a.getSpace().getDimension()); |
| Assert.assertTrue(a.getSpace().getSubSpace() instanceof Sphere1D); |
| } |
| |
| } |