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.Point;
25 import org.hipparchus.geometry.Space;
26
27 /** Visitor computing the boundary size.
28 * @param <S> Type of the space.
29 * @param <P> Type of the points in space.
30 * @param <H> Type of the hyperplane.
31 * @param <I> Type of the sub-hyperplane.
32 */
33 class BoundarySizeVisitor<S extends Space, P extends Point<S, P>, H extends Hyperplane<S, P, H, I>, I extends SubHyperplane<S, P, H, I>>
34 implements BSPTreeVisitor<S, P, H, I> {
35
36 /** Size of the boundary. */
37 private double boundarySize;
38
39 /** Simple constructor.
40 */
41 BoundarySizeVisitor() {
42 boundarySize = 0;
43 }
44
45 /** {@inheritDoc}*/
46 @Override
47 public Order visitOrder(final BSPTree<S, P, H, I> node) {
48 return Order.MINUS_SUB_PLUS;
49 }
50
51 /** {@inheritDoc}*/
52 @Override
53 public void visitInternalNode(final BSPTree<S, P, H, I> node) {
54 @SuppressWarnings("unchecked")
55 final BoundaryAttribute<S, P, H, I> attribute =
56 (BoundaryAttribute<S, P, H, I>) node.getAttribute();
57 if (attribute.getPlusOutside() != null) {
58 boundarySize += attribute.getPlusOutside().getSize();
59 }
60 if (attribute.getPlusInside() != null) {
61 boundarySize += attribute.getPlusInside().getSize();
62 }
63 }
64
65 /** {@inheritDoc}*/
66 @Override
67 public void visitLeafNode(final BSPTree<S, P, H, I> node) {
68 }
69
70 /** Get the size of the boundary.
71 * @return size of the boundary
72 */
73 public double getSize() {
74 return boundarySize;
75 }
76
77 }