1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.geometry.euclidean.twod;
18
19 import org.apache.commons.geometry.euclidean.EuclideanTestUtils;
20 import org.apache.commons.geometry.euclidean.oned.Vector1D;
21 import org.apache.commons.numbers.core.Precision;
22 import org.junit.jupiter.api.Test;
23
24 class LineSubsetTest {
25
26 private static final double TEST_EPS = 1e-10;
27
28 private static final Precision.DoubleEquivalence TEST_PRECISION =
29 Precision.doubleEquivalenceOfEpsilon(TEST_EPS);
30
31 @Test
32 void testToSubspaceAndToSpace() {
33 // arrange
34 final LineSubset subset = Lines.fromPointAndAngle(Vector2D.of(0, 1), 0.0, TEST_PRECISION)
35 .span();
36
37 // act/assert
38 EuclideanTestUtils.assertCoordinatesEqual(Vector2D.of(2, 1), subset.toSpace(Vector1D.of(2)), TEST_EPS);
39 EuclideanTestUtils.assertCoordinatesEqual(Vector1D.of(2), subset.toSubspace(Vector2D.of(2, 1)), TEST_EPS);
40 }
41 }