001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/processing/raster/interpolation/DataTuple.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.processing.raster.interpolation;
037
038 /**
039 *
040 *
041 *
042 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
043 * @author last edited by: $Author: mschneider $
044 *
045 * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
046 *
047 */
048 public class DataTuple implements Comparable<DataTuple> {
049
050 /**
051 * X-Coordinate of the data tuple
052 */
053 public double x = 0;
054
055 /**
056 * Y-Coordinate of the data tuple
057 */
058 public double y = 0;
059
060 /**
061 * Value at location x,y
062 */
063 public double value = 0;
064
065 /**
066 * This may not be the best choice for epsilon.
067 */
068 // public static final double EPSILON = 0.00000000001;
069 /**
070 * Convenience constructor.
071 *
072 * @param x
073 * @param y
074 * @param value
075 */
076 public DataTuple( double x, double y, double value ) {
077 this.x = x;
078 this.y = y;
079 this.value = value;
080 }
081
082 /**
083 * Empty constructor. Data is pre-set to zero.
084 */
085 public DataTuple() {
086 //
087 }
088
089 /*
090 * (non-Javadoc)
091 *
092 * @see java.lang.Comparable#compareTo(T)
093 */
094 public int compareTo( DataTuple o ) {
095
096 // boolean xequal = ( ( ( x - EPSILON ) < o.x ) && ( ( x + EPSILON ) > o.x ) );
097 // boolean yequal = ( ( ( y - EPSILON ) < o.y ) && ( ( y + EPSILON ) > o.y ) );
098
099 boolean xequal = ( x == o.x );
100 boolean yequal = ( y == o.y );
101
102 if ( xequal && yequal ) {
103 return 0;
104 }
105
106 if ( x < o.x ) {
107 return -1;
108 }
109
110 if ( xequal && ( y < o.y ) ) {
111 return -1;
112 }
113
114 return 1;
115 }
116
117 }