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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.math3.geometry.partitioning;
import org.apache.commons.math3.geometry.Space;
/** Visitor computing the boundary size.
* @param <S> Type of the space.
* @since 3.0
*/
class BoundarySizeVisitor<S extends Space> implements BSPTreeVisitor<S> {
/** Size of the boundary. */
private double boundarySize;
/** Simple constructor.
*/
BoundarySizeVisitor() {
boundarySize = 0;
}
/** {@inheritDoc}*/
public Order visitOrder(final BSPTree<S> node) {
return Order.MINUS_SUB_PLUS;
}
/** {@inheritDoc}*/
public void visitInternalNode(final BSPTree<S> node) {
@SuppressWarnings("unchecked")
final BoundaryAttribute<S> attribute =
(BoundaryAttribute<S>) node.getAttribute();
if (attribute.getPlusOutside() != null) {
boundarySize += attribute.getPlusOutside().getSize();
}
if (attribute.getPlusInside() != null) {
boundarySize += attribute.getPlusInside().getSize();
}
}
/** {@inheritDoc}*/
public void visitLeafNode(final BSPTree<S> node) {
}
/** Get the size of the boundary.
* @return size of the boundary
*/
public double getSize() {
return boundarySize;
}
}
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