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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.examples.io.threed;
    18
    19  import java.io.ByteArrayInputStream;
    20  import java.io.ByteArrayOutputStream;
    21  import java.util.List;
    22  import java.util.stream.Collectors;
    23
    24  import org.apache.commons.geometry.core.precision.DoublePrecisionContext;
    25  import org.apache.commons.geometry.core.precision.EpsilonDoublePrecisionContext;
    26  import org.apache.commons.geometry.euclidean.EuclideanTestUtils;
    27  import org.apache.commons.geometry.euclidean.threed.BoundarySource3D;
    28  import org.apache.commons.geometry.euclidean.threed.Planes;
    29  import org.apache.commons.geometry.euclidean.threed.Triangle3D;
    30  import org.apache.commons.geometry.euclidean.threed.Vector3D;
    31  import org.junit.Assert;
    32  import org.junit.Test;
    33
    34  public class DefaultModelIOHandlerRegistryTest {
    35
    36      private static final double TEST_EPS = 1e-10;
    37
    38      private static final DoublePrecisionContext TEST_PRECISION =
    39              new EpsilonDoublePrecisionContext(TEST_EPS);
    40
    41      private DefaultModelIOHandlerRegistry registry = new DefaultModelIOHandlerRegistry();
    42
    43      @Test
    44      public void testDefaultHandlers() {
    45          // act
    46          List<ModelIOHandler> handlers = registry.getHandlers();
    47
    48          // assert
    49          Assert.assertEquals(1, handlers.size());
    50      }
    51
    52      @Test
    53      public void testSupportedTypes() {
    54          // act/assert
    55          Assert.assertTrue(registry.handlesType("obj"));
    56          Assert.assertTrue(registry.handlesType("OBJ"));
    57      }
    58
    59      @Test
    60      public void testReadWrite_supportedTypes() {
    61          // act/assert
    62          checkWriteRead("obj");
    63      }
    64
    65      private void checkWriteRead(String type) {
    66          // arrange
    67          BoundarySource3D model = BoundarySource3D.from(
    68                  Planes.triangleFromVertices(Vector3D.ZERO, Vector3D.of(1, 0, 0), Vector3D.of(0, 1, 0), TEST_PRECISION)
    69              );
    70
    71          ByteArrayOutputStream out = new ByteArrayOutputStream();
    72
    73          // act
    74          registry.write(model, type, out);
    75          BoundarySource3D result = registry.read(type, new ByteArrayInputStream(out.toByteArray()), TEST_PRECISION);
    76
    77          // assert
    78          List<Triangle3D> tris = result.triangleStream().collect(Collectors.toList());
    79          Assert.assertEquals(1, tris.size());
    80
    81          Triangle3D tri = tris.get(0);
    82          EuclideanTestUtils.assertCoordinatesEqual(Vector3D.ZERO, tri.getPoint1(), TEST_EPS);
    83          EuclideanTestUtils.assertCoordinatesEqual(Vector3D.of(1, 0, 0), tri.getPoint2(), TEST_EPS);
    84          EuclideanTestUtils.assertCoordinatesEqual(Vector3D.of(0, 1, 0), tri.getPoint3(), TEST_EPS);
    85      }
    86  }