View Javadoc

    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  }