001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.math3.geometry.euclidean.oned; 018 019 import org.apache.commons.math3.geometry.partitioning.AbstractSubHyperplane; 020 import org.apache.commons.math3.geometry.partitioning.Hyperplane; 021 import org.apache.commons.math3.geometry.partitioning.Region; 022 import org.apache.commons.math3.geometry.partitioning.Side; 023 024 /** This class represents sub-hyperplane for {@link OrientedPoint}. 025 * <p>An hyperplane in 1D is a simple point, its orientation being a 026 * boolean.</p> 027 * <p>Instances of this class are guaranteed to be immutable.</p> 028 * @version $Id: SubOrientedPoint.java 1416643 2012-12-03 19:37:14Z tn $ 029 * @since 3.0 030 */ 031 public class SubOrientedPoint extends AbstractSubHyperplane<Euclidean1D, Euclidean1D> { 032 033 /** Simple constructor. 034 * @param hyperplane underlying hyperplane 035 * @param remainingRegion remaining region of the hyperplane 036 */ 037 public SubOrientedPoint(final Hyperplane<Euclidean1D> hyperplane, 038 final Region<Euclidean1D> remainingRegion) { 039 super(hyperplane, remainingRegion); 040 } 041 042 /** {@inheritDoc} */ 043 @Override 044 public double getSize() { 045 return 0; 046 } 047 048 /** {@inheritDoc} */ 049 @Override 050 protected AbstractSubHyperplane<Euclidean1D, Euclidean1D> buildNew(final Hyperplane<Euclidean1D> hyperplane, 051 final Region<Euclidean1D> remainingRegion) { 052 return new SubOrientedPoint(hyperplane, remainingRegion); 053 } 054 055 /** {@inheritDoc} */ 056 @Override 057 public Side side(final Hyperplane<Euclidean1D> hyperplane) { 058 final double global = hyperplane.getOffset(((OrientedPoint) getHyperplane()).getLocation()); 059 return (global < -1.0e-10) ? Side.MINUS : ((global > 1.0e-10) ? Side.PLUS : Side.HYPER); 060 } 061 062 /** {@inheritDoc} */ 063 @Override 064 public SplitSubHyperplane<Euclidean1D> split(final Hyperplane<Euclidean1D> hyperplane) { 065 final double global = hyperplane.getOffset(((OrientedPoint) getHyperplane()).getLocation()); 066 return (global < -1.0e-10) ? 067 new SplitSubHyperplane<Euclidean1D>(null, this) : 068 new SplitSubHyperplane<Euclidean1D>(this, null); 069 } 070 071 }