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.geometry.core;
018
019/** Interface representing a geometric element with a size. The exact meaning
020 * of the size will vary between spaces and dimensions. For example, the size
021 * of a line is its length, while the size of a polygon is its area.
022 */
023public interface Sized {
024
025    /** Get the size of the instance.
026     * @return the size of the instance
027     */
028    double getSize();
029
030    /** Return true if the size of the instance is finite.
031     * @return true if the size of the instance is finite
032     */
033    default boolean isFinite() {
034        return Double.isFinite(getSize());
035    }
036
037    /** Return true if the size of the instance is infinite.
038     * @return true if the size of the instance is infinite
039     */
040    default boolean isInfinite() {
041        return Double.isInfinite(getSize());
042    }
043}