| /* |
| * 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.geometry.core.partitioning; |
| |
| import java.util.List; |
| |
| import org.apache.commons.geometry.core.RegionLocation; |
| import org.apache.commons.geometry.core.Transform; |
| import org.apache.commons.geometry.core.partition.test.PartitionTestUtils; |
| import org.apache.commons.geometry.core.partition.test.TestLine; |
| import org.apache.commons.geometry.core.partition.test.TestPoint1D; |
| import org.apache.commons.geometry.core.partition.test.TestPoint2D; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class AbstractEmbeddingSubHyperplaneTest { |
| |
| @Test |
| public void testSimpleProperties() { |
| // arrange |
| StubSubHyperplane sub = new StubSubHyperplane(); |
| |
| // act/assert |
| Assert.assertTrue(sub.isFull()); |
| Assert.assertTrue(sub.isEmpty()); |
| Assert.assertEquals(1.0, sub.getSize(), PartitionTestUtils.EPS); |
| } |
| |
| @Test |
| public void testClassify() { |
| // arrange |
| StubSubHyperplane sub = new StubSubHyperplane(); |
| |
| // act/assert |
| Assert.assertEquals(RegionLocation.INSIDE, sub.classify(new TestPoint2D(-1, 0))); |
| Assert.assertEquals(RegionLocation.BOUNDARY, sub.classify(new TestPoint2D(0, 0))); |
| |
| Assert.assertEquals(RegionLocation.OUTSIDE, sub.classify(new TestPoint2D(0, 1))); |
| Assert.assertEquals(RegionLocation.OUTSIDE, sub.classify(new TestPoint2D(-1, 1))); |
| Assert.assertEquals(RegionLocation.OUTSIDE, sub.classify(new TestPoint2D(-1, -1))); |
| } |
| |
| @Test |
| public void testClosest() { |
| // arrange |
| StubSubHyperplane sub = new StubSubHyperplane(); |
| |
| // act/assert |
| PartitionTestUtils.assertPointsEqual(new TestPoint2D(-1, 0), sub.closest(new TestPoint2D(-1, 0))); |
| |
| PartitionTestUtils.assertPointsEqual(new TestPoint2D(0, 0), sub.closest(new TestPoint2D(0, 0))); |
| PartitionTestUtils.assertPointsEqual(new TestPoint2D(0, 0), sub.closest(new TestPoint2D(1, 0))); |
| PartitionTestUtils.assertPointsEqual(new TestPoint2D(0, 0), sub.closest(new TestPoint2D(1, 1))); |
| PartitionTestUtils.assertPointsEqual(new TestPoint2D(0, 0), sub.closest(new TestPoint2D(1, -1))); |
| |
| PartitionTestUtils.assertPointsEqual(new TestPoint2D(-1, 0), sub.closest(new TestPoint2D(-1, 1))); |
| PartitionTestUtils.assertPointsEqual(new TestPoint2D(-1, 0), sub.closest(new TestPoint2D(-1, -1))); |
| } |
| |
| @Test |
| public void testClosest_nullSubspaceRegionProjection() { |
| // arrange |
| StubSubHyperplane sub = new StubSubHyperplane(); |
| sub.region.projected = null; |
| |
| // act/assert |
| Assert.assertNull(sub.closest(new TestPoint2D(1, 1))); |
| } |
| |
| private static class StubSubHyperplane extends AbstractEmbeddingSubHyperplane<TestPoint2D, TestPoint1D, TestLine> { |
| private StubRegion1D region = new StubRegion1D(); |
| |
| @Override |
| public boolean isInfinite() { |
| return false; |
| } |
| |
| @Override |
| public boolean isFinite() { |
| return true; |
| } |
| |
| @Override |
| public Builder<TestPoint2D> builder() { |
| return null; |
| } |
| |
| @Override |
| public List<? extends ConvexSubHyperplane<TestPoint2D>> toConvex() { |
| return null; |
| } |
| |
| @Override |
| public TestLine getHyperplane() { |
| return TestLine.X_AXIS; |
| } |
| |
| @Override |
| public HyperplaneBoundedRegion<TestPoint1D> getSubspaceRegion() { |
| return region; |
| } |
| |
| @Override |
| public Split<StubSubHyperplane> split(Hyperplane<TestPoint2D> splitter) { |
| return null; |
| } |
| |
| @Override |
| public SubHyperplane<TestPoint2D> transform(Transform<TestPoint2D> transform) { |
| return null; |
| } |
| } |
| |
| /** Stub region implementation with some hard-coded values. Negative numbers are |
| * on the inside of the region. |
| */ |
| private static class StubRegion1D implements HyperplaneBoundedRegion<TestPoint1D> { |
| |
| private TestPoint1D projected = new TestPoint1D(0); |
| |
| @Override |
| public boolean isFull() { |
| return true; |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return true; |
| } |
| |
| @Override |
| public double getSize() { |
| return 1; |
| } |
| |
| @Override |
| public double getBoundarySize() { |
| return 0; |
| } |
| |
| @Override |
| public TestPoint1D getBarycenter() { |
| return null; |
| } |
| |
| @Override |
| public RegionLocation classify(TestPoint1D pt) { |
| int sign = PartitionTestUtils.PRECISION.sign(pt.getX()); |
| |
| if (sign < 0) { |
| return RegionLocation.INSIDE; |
| } |
| else if (sign == 0) { |
| return RegionLocation.BOUNDARY; |
| } |
| return RegionLocation.OUTSIDE; |
| } |
| |
| @Override |
| public TestPoint1D project(TestPoint1D pt) { |
| return projected; |
| } |
| |
| @Override |
| public Split<? extends HyperplaneBoundedRegion<TestPoint1D>> split(Hyperplane<TestPoint1D> splitter) { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| } |