001 //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/io/rtree/HyperPoint.java $
002 //----------------------------------------
003 //RTree implementation.
004 //Copyright (C) 2002-2004 Wolfgang Baer - WBaer@gmx.de
005 //
006 //This library is free software; you can redistribute it and/or
007 //modify it under the terms of the GNU Lesser General Public
008 //License as published by the Free Software Foundation; either
009 //version 2.1 of the License, or (at your option) any later version.
010 //
011 //This library is distributed in the hope that it will be useful,
012 //but WITHOUT ANY WARRANTY; without even the implied warranty of
013 //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 //Lesser General Public License for more details.
015 //
016 //You should have received a copy of the GNU Lesser General Public
017 //License along with this library; if not, write to the Free Software
018 //Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
019 //----------------------------------------
020
021 package org.deegree.io.rtree;
022
023 import java.io.Serializable;
024
025 /**
026 * <p>
027 * Point in multidimensional space. Based on double coordinates.
028 * </p>
029 *
030 * @author Wolfgang Baer - WBaer@gmx.de
031 */
032 public class HyperPoint implements Serializable {
033
034 private double[] coords;
035
036 /**
037 * Constructor.<br>
038 * Length of given array sets the dimension.
039 *
040 * @param coords -
041 * array with double values of the coordinates.
042 */
043 public HyperPoint( double[] coords ) {
044 // this.coords = coords;
045 this.coords = new double[] { coords[0], coords[1] };
046 }
047
048 /**
049 * Creates a null HyperPoint with coordinates Double.NaN. Mostly used internal.
050 *
051 * @param dimension -
052 * int for dimension of point
053 * @return HyperPoint
054 */
055 protected static HyperPoint getNullHyperPoint( int dimension ) {
056 double[] point = new double[dimension];
057 for ( int i = 0; i < dimension; i++ )
058 point[i] = Double.NaN;
059 return new HyperPoint( point );
060 }
061
062 /**
063 * Returns the coordinates as double array.
064 *
065 * @return double[]
066 *
067 */
068 public double[] getCoords() {
069 return coords;
070 }
071
072 /**
073 * Returns the coordinate for given index.
074 *
075 * @param index -
076 * int
077 * @return double - coordinate
078 */
079 public double getCoord( int index ) {
080 return coords[index];
081 }
082
083 /**
084 * Returns the dimension of the HyperPoint.
085 *
086 * @return int
087 */
088 public int getDimension() {
089 return coords.length;
090 }
091
092 /**
093 * Builds a String representation of the HyperPoint.
094 *
095 * @return String
096 */
097 public String toString() {
098 String ret = "";
099
100 for ( int i = 0; i < coords.length; i++ ) {
101 ret += ( coords[i] + ", " );
102 }
103
104 return ret;
105 }
106
107 /**
108 * Implements equals
109 *
110 * @see java.lang.Object#equals(java.lang.Object)
111 */
112 public boolean equals( Object obj ) {
113 HyperPoint point = (HyperPoint) obj;
114 for ( int i = 0; i < coords.length; i++ ) {
115 if ( this.coords[i] != point.coords[i] )
116 return false;
117 }
118 return true;
119 }
120
121 /**
122 * Implements clone.
123 *
124 * @see java.lang.Object#clone()
125 */
126 protected Object clone() {
127 double[] point = new double[coords.length];
128
129 for ( int i = 0; i < coords.length; i++ )
130 point[i] = coords[i];
131
132 return new HyperPoint( point );
133 }
134 }