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 org.hipparchus.geometry.Space;
25
26 /** Visitor computing the boundary size.
27 * @param <S> Type of the space.
28 */
29 class BoundarySizeVisitor<S extends Space> implements BSPTreeVisitor<S> {
30
31 /** Size of the boundary. */
32 private double boundarySize;
33
34 /** Simple constructor.
35 */
36 BoundarySizeVisitor() {
37 boundarySize = 0;
38 }
39
40 /** {@inheritDoc}*/
41 @Override
42 public Order visitOrder(final BSPTree<S> node) {
43 return Order.MINUS_SUB_PLUS;
44 }
45
46 /** {@inheritDoc}*/
47 @Override
48 public void visitInternalNode(final BSPTree<S> node) {
49 @SuppressWarnings("unchecked")
50 final BoundaryAttribute<S> attribute =
51 (BoundaryAttribute<S>) node.getAttribute();
52 if (attribute.getPlusOutside() != null) {
53 boundarySize += attribute.getPlusOutside().getSize();
54 }
55 if (attribute.getPlusInside() != null) {
56 boundarySize += attribute.getPlusInside().getSize();
57 }
58 }
59
60 /** {@inheritDoc}*/
61 @Override
62 public void visitLeafNode(final BSPTree<S> node) {
63 }
64
65 /** Get the size of the boundary.
66 * @return size of the boundary
67 */
68 public double getSize() {
69 return boundarySize;
70 }
71
72 }