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 */
017package org.apache.commons.math3.geometry.enclosing;
018
019import java.util.List;
020
021import org.apache.commons.math3.geometry.Point;
022import org.apache.commons.math3.geometry.Space;
023
024/** Interface for generating balls based on support points.
025 * <p>
026 * This generator is used in the {@link WelzlEncloser Emo Welzl} algorithm
027 * and its derivatives.
028 * </p>
029 * @param <S> Space type.
030 * @param <P> Point type.
031 * @see EnclosingBall
032 * @since 3.3
033 */
034public interface SupportBallGenerator<S extends Space, P extends Point<S>> {
035
036    /** Create a ball whose boundary lies on prescribed support points.
037     * @param support support points (may be empty)
038     * @return ball whose boundary lies on the prescribed support points
039     */
040    EnclosingBall<S, P> ballOnSupport(List<P> support);
041
042}