    001/* ===========================================================
    002 * JFreeChart : a free chart library for the Java(tm) platform
    003 * ===========================================================
    004 *
    005 * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.
    006 *
    007 * Project Info:  http://www.jfree.org/jfreechart/index.html
    008 *
    009 * This library is free software; you can redistribute it and/or modify it
    010 * under the terms of the GNU Lesser General Public License as published by
    011 * the Free Software Foundation; either version 2.1 of the License, or
    012 * (at your option) any later version.
    013 *
    014 * This library is distributed in the hope that it will be useful, but
    015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    017 * License for more details.
    018 *
    019 * You should have received a copy of the GNU Lesser General Public
    020 * License along with this library; if not, write to the Free Software
    021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
    022 * USA.
    023 *
    024 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    025 * Other names may be trademarks of their respective owners.]
    026 *
    027 * --------------
    028 * YInterval.java
    029 * --------------
    030 * (C) Copyright 2006-2008, by Object Refinery Limited.
    031 *
    032 * Original Author:  David Gilbert (for Object Refinery Limited);
    033 * Contributor(s):   -;
    034 *
    035 * Changes
    036 * -------
    037 * 20-Oct-2006 : Version 1 (DG);
    038 *
    039 */
    040
    041package org.jfree.data.xy;
    042
    043import java.io.Serializable;
    044
    045/**
    046 * A y-interval.  This class is used internally by the
    047 * {@link YIntervalDataItem} class.
    048 *
    049 * @since 1.0.3
    050 */
    051public class YInterval implements Serializable {
    052
    053    /** The y-value. */
    054    private double y;
    055
    056    /** The lower bound of the y-interval. */
    057    private double yLow;
    058
    059    /** The upper bound of the y-interval. */
    060    private double yHigh;
    061
    062    /**
    063     * Creates a new instance of <code>YInterval</code>.
    064     *
    065     * @param y  the y-value.
    066     * @param yLow  the lower bound of the y-interval.
    067     * @param yHigh  the upper bound of the y-interval.
    068     */
    069    public YInterval(double y, double yLow, double yHigh) {
    070        this.y = y;
    071        this.yLow = yLow;
    072        this.yHigh = yHigh;
    073    }
    074
    075    /**
    076     * Returns the y-value.
    077     *
    078     * @return The y-value.
    079     */
    080    public double getY() {
    081        return this.y;
    082    }
    083
    084    /**
    085     * Returns the lower bound of the y-interval.
    086     *
    087     * @return The lower bound of the y-interval.
    088     */
    089    public double getYLow() {
    090        return this.yLow;
    091    }
    092
    093    /**
    094     * Returns the upper bound of the y-interval.
    095     *
    096     * @return The upper bound of the y-interval.
    097     */
    098    public double getYHigh() {
    099        return this.yHigh;
    100    }
    101
    102    /**
    103     * Tests this instance for equality with an arbitrary object.
    104     *
    105     * @param obj  the object (<code>null</code> permitted).
    106     *
    107     * @return A boolean.
    108     */
    109    public boolean equals(Object obj) {
    110        if (obj == this) {
    111            return true;
    112        }
    113        if (!(obj instanceof YInterval)) {
    114            return false;
    115        }
    116        YInterval that = (YInterval) obj;
    117        if (this.y != that.y) {
    118            return false;
    119        }
    120        if (this.yLow != that.yLow) {
    121            return false;
    122        }
    123        if (this.yHigh != that.yHigh) {
    124            return false;
    125        }
    126        return true;
    127    }
    128
    129}