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    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.core.partitioning;
    18
    19  import org.apache.commons.geometry.core.Transform;
    20  import org.apache.commons.geometry.core.partitioning.test.TestLine;
    21  import org.apache.commons.geometry.core.partitioning.test.TestPoint2D;
    22  import org.apache.commons.geometry.core.precision.DoublePrecisionContext;
    23  import org.apache.commons.geometry.core.precision.EpsilonDoublePrecisionContext;
    24  import org.junit.Assert;
    25  import org.junit.Test;
    26
    27  public class AbstractHyperplaneTest {
    28
    29      @Test
    30      public void testGetPrecision() {
    31          // arrange
    32          final DoublePrecisionContext precision = new EpsilonDoublePrecisionContext(1e-1);
    33          final StubHyperplane hyper = new StubHyperplane(precision);
    34
    35          // act/assert
    36          Assert.assertSame(precision, hyper.getPrecision());
    37      }
    38
    39      @Test
    40      public void testClassify() {
    41          // arrange
    42          final DoublePrecisionContext precision = new EpsilonDoublePrecisionContext(1e-1);
    43          final StubHyperplane hyper = new StubHyperplane(precision);
    44
    45          // act/assert
    46          Assert.assertEquals(HyperplaneLocation.MINUS, hyper.classify(new TestPoint2D(1, 1)));
    47
    48          Assert.assertEquals(HyperplaneLocation.ON, hyper.classify(new TestPoint2D(1, 0.09)));
    49          Assert.assertEquals(HyperplaneLocation.ON, hyper.classify(new TestPoint2D(1, 0)));
    50          Assert.assertEquals(HyperplaneLocation.ON, hyper.classify(new TestPoint2D(1, -0.09)));
    51
    52          Assert.assertEquals(HyperplaneLocation.PLUS, hyper.classify(new TestPoint2D(1, -1)));
    53      }
    54
    55      @Test
    56      public void testContains() {
    57          // arrange
    58          final DoublePrecisionContext precision = new EpsilonDoublePrecisionContext(1e-1);
    59          final StubHyperplane hyper = new StubHyperplane(precision);
    60
    61          // act/assert
    62          Assert.assertFalse(hyper.contains(new TestPoint2D(1, 1)));
    63
    64          Assert.assertTrue(hyper.contains(new TestPoint2D(1, 0.09)));
    65          Assert.assertTrue(hyper.contains(new TestPoint2D(1, 0)));
    66          Assert.assertTrue(hyper.contains(new TestPoint2D(1, -0.09)));
    67
    68          Assert.assertFalse(hyper.contains(new TestPoint2D(1, -1)));
    69      }
    70
    71      public static class StubHyperplane extends AbstractHyperplane<TestPoint2D> {
    72
    73          public StubHyperplane(final DoublePrecisionContext precision) {
    74              super(precision);
    75          }
    76
    77          @Override
    78          public double offset(final TestPoint2D point) {
    79              return TestLine.X_AXIS.offset(point);
    80          }
    81
    82          @Override
    83          public TestPoint2D project(final TestPoint2D point) {
    84              return null;
    85          }
    86
    87          @Override
    88          public Hyperplane<TestPoint2D> reverse() {
    89              return null;
    90          }
    91
    92          @Override
    93          public Hyperplane<TestPoint2D> transform(final Transform<TestPoint2D> transform) {
    94              return null;
    95          }
    96
    97          @Override
    98          public boolean similarOrientation(final Hyperplane<TestPoint2D> other) {
    99              return false;
    100         }
    101
    102         @Override
    103         public HyperplaneConvexSubset<TestPoint2D> span() {
    104             return null;
    105         }
    106     }
    107 }