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 * https://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
18 /*
19 * This is not the original file distributed by the Apache Software Foundation
20 * It has been modified by the Hipparchus project
21 */
22 package org.hipparchus.geometry.partitioning;
23
24 import java.util.ArrayList;
25 import java.util.Iterator;
26 import java.util.List;
27
28 import org.hipparchus.geometry.Space;
29
30 /** Set of {@link BSPTree BSP tree} nodes.
31 * @see BoundaryAttribute
32 * @param <S> Type of the space.
33 */
34 public class NodesSet<S extends Space> implements Iterable<BSPTree<S>> {
35
36 /** List of sub-hyperplanes. */
37 private final List<BSPTree<S>> list;
38
39 /** Simple constructor.
40 */
41 public NodesSet() {
42 list = new ArrayList<>();
43 }
44
45 /** Add a node if not already known.
46 * @param node node to add
47 */
48 public void add(final BSPTree<S> node) {
49
50 for (final BSPTree<S> existing : list) {
51 if (node == existing) {
52 // the node is already known, don't add it
53 return;
54 }
55 }
56
57 // the node was not known, add it
58 list.add(node);
59
60 }
61
62 /** Add nodes if they are not already known.
63 * @param iterator nodes iterator
64 */
65 public void addAll(final Iterable<BSPTree<S>> iterator) {
66 for (final BSPTree<S> node : iterator) {
67 add(node);
68 }
69 }
70
71 /** {@inheritDoc} */
72 @Override
73 public Iterator<BSPTree<S>> iterator() {
74 return list.iterator();
75 }
76
77 }