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.core.partitioning.bsp; 18 19 /** Enum describing the possible behaviors when cutting a region BSP tree node 20 * with a hyperplane to produce two new child nodes. 21 */ 22 public enum RegionCutRule { 23 24 /** Set the minus side of the cutting hyperplane as the inside of the region 25 * and the plus side as the outside. This is the default convention for hyperplanes. 26 */ 27 MINUS_INSIDE, 28 29 /** Set the plus side of the cutting hyperplane as the inside of the region and 30 * the minus side as the outside. 31 */ 32 PLUS_INSIDE, 33 34 /** Set both child nodes to the same location as the parent node. For example, if the 35 * parent node is marked as inside, both child nodes will be marked as inside. Similarly 36 * if the parent node is marked as outside, both child nodes will be marked as outside. 37 * This rule can be used to modify the tree structure (to perhaps produce a more efficient, 38 * balanced tree) without changing the represented region. 39 */ 40 INHERIT 41 }