001    /* ===========================================================
002     * JFreeChart : a free chart library for the Java(tm) platform
003     * ===========================================================
004     *
005     * (C) Copyright 2000-2006, 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     * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025     * in the United States and other countries.]
026     *
027     * ---------------
028     * XYInterval.java
029     * ---------------
030     * (C) Copyright 2006, by Object Refinery Limited.
031     *
032     * Original Author:  David Gilbert (for Object Refinery Limited);
033     * Contributor(s):   -;
034     *
035     * $Id: XYInterval.java,v 1.1.2.1 2006/10/20 15:23:22 mungady Exp $
036     *
037     * Changes
038     * -------
039     * 20-Oct-2006 : Version 1 (DG);
040     *
041     */
042    
043    package org.jfree.data.xy;
044    
045    import java.io.Serializable;
046    
047    /**
048     * An  xy-interval.  This class is used internally by the 
049     * {@link XYIntervalDataItem} class.
050     *
051     * @since 1.0.3
052     */
053    public class XYInterval implements Serializable {
054        
055        /** The lower bound of the x-interval. */
056        private double xLow;
057        
058        /** The upper bound of the y-interval. */
059        private double xHigh;
060        
061        /** The y-value. */
062        private double y;
063        
064        /** The lower bound of the y-interval. */
065        private double yLow;
066        
067        /** The upper bound of the y-interval. */
068        private double yHigh;
069        
070        /** 
071         * Creates a new instance of <code>XYInterval</code>.
072         *
073         * @param xLow  the lower bound of the x-interval.
074         * @param xHigh  the upper bound of the y-interval.
075         * @param y  the y-value.
076         * @param yLow  the lower bound of the y-interval.
077         * @param yHigh  the upper bound of the y-interval.  
078         */
079        public XYInterval(double xLow, double xHigh, double y, double yLow, 
080                double yHigh) {
081            this.xLow = xLow;
082            this.xHigh = xHigh;
083            this.y = y;
084            this.yLow = yLow;
085            this.yHigh = yHigh;
086        }
087        
088        /**
089         * Returns the lower bound of the x-interval.
090         *
091         * @return The lower bound of the x-interval.
092         */
093        public double getXLow() {
094            return this.xLow;
095        }
096        
097        /**
098         * Returns the upper bound of the x-interval.
099         *
100         * @return The upper bound of the x-interval.
101         */
102        public double getXHigh() {
103            return this.xHigh;
104        }
105    
106        /**
107         * Returns the y-value.
108         *
109         * @return The y-value.
110         */
111        public double getY() {
112            return this.y;
113        }
114        
115        /**
116         * Returns the lower bound of the y-interval.
117         *
118         * @return The lower bound of the y-interval.
119         */
120        public double getYLow() {
121            return this.yLow;
122        }
123        
124        /**
125         * Returns the upper bound of the y-interval.
126         *
127         * @return The upper bound of the y-interval.
128         */
129        public double getYHigh() {
130            return this.yHigh;
131        }
132        
133        /**
134         * Tests this instance for equality with an arbitrary object.
135         *
136         * @param obj  the object (<code>null</code> permitted).
137         *
138         * @return A boolean.
139         */
140        public boolean equals(Object obj) {
141            if (obj == this) {
142                return true;
143            }
144            if (!(obj instanceof XYInterval)) {
145                return false;
146            }
147            XYInterval that = (XYInterval) obj;
148            if (this.xLow != that.xLow) {
149                return false;
150            }
151            if (this.xHigh != that.xHigh) {
152                return false;
153            }
154            if (this.y != that.y) {
155                return false;
156            }
157            if (this.yLow != that.yLow) {
158                return false;
159            }
160            if (this.yHigh != that.yHigh) {
161                return false;
162            }
163            return true;
164        }
165        
166    }