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.hull.euclidean.twod;
    18
    19  import java.util.ArrayList;
    20  import java.util.Collection;
    21
    22  import org.apache.commons.geometry.core.precision.EpsilonDoublePrecisionContext;
    23  import org.apache.commons.geometry.euclidean.twod.Vector2D;
    24  import org.junit.Test;
    25
    26  /**
    27   * Test class for MonotoneChain.
    28   */
    29  public class MonotoneChainTest extends ConvexHullGenerator2DAbstractTest {
    30
    31      @Override
    32      protected ConvexHullGenerator2D createConvexHullGenerator(final boolean includeCollinearPoints) {
    33          return new MonotoneChain(includeCollinearPoints, TEST_PRECISION);
    34      }
    35
    36      // ------------------------------------------------------------------------------
    37
    38      @Test(expected = IllegalStateException.class)
    39      public void testConvergenceException() {
    40          // arrange
    41          final Collection<Vector2D> points = new ArrayList<>();
    42
    43          points.add(Vector2D.of(1, 1));
    44          points.add(Vector2D.of(1, 5));
    45          points.add(Vector2D.of(0, 7));
    46          points.add(Vector2D.of(1, 10));
    47          points.add(Vector2D.of(1, 20));
    48          points.add(Vector2D.of(20, 20));
    49          points.add(Vector2D.of(20, 40));
    50          points.add(Vector2D.of(40, 1));
    51
    52          // act/assert
    53          new MonotoneChain(true, new EpsilonDoublePrecisionContext(1)).generate(points);
    54      }
    55  }