1 /*** 2 * Redistribution and use in source and binary forms, with or without 3 * modification, are permitted provided that the following conditions are 4 * met : 5 * 6 * . Redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer. 8 * 9 * . Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * . The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $Id$ 29 */ 30 31 package palmed.edit.util; 32 33 import java.io.DataInputStream; 34 import java.io.DataOutputStream; 35 import java.io.IOException; 36 import java.io.InputStream; 37 import java.io.OutputStream; 38 import palmed.io.ISerializable; 39 40 /*** 41 * This class encapsulates a two integers coordinate. 42 * 43 * @author Mathieu Champlon 44 * @version $Revision$ $Date$ 45 */ 46 public final class Coordinate implements ISerializable 47 { 48 /*** 49 * The size of an integer in bytes. 50 */ 51 private static final int SIZE_OF_INT = 16; 52 /*** 53 * The abcissa value. 54 */ 55 public int x_; 56 /*** 57 * The ordinate value. 58 */ 59 public int y_; 60 61 /*** 62 * Create a coordinate (0,0). 63 */ 64 public Coordinate() 65 { 66 } 67 68 /*** 69 * Create a coordinate (x,y). 70 * 71 * @param x abcissa 72 * @param y ordinate 73 */ 74 public Coordinate( final int x, final int y ) 75 { 76 x_ = x; 77 y_ = y; 78 } 79 80 /*** 81 * {@inheritDoc} 82 */ 83 public boolean equals( final Object object ) 84 { 85 if( object instanceof Coordinate ) 86 { 87 Coordinate coord = (Coordinate)object; 88 return coord.x_ == x_ && coord.y_ == y_; 89 } 90 return false; 91 } 92 93 /*** 94 * {@inheritDoc} 95 */ 96 public int hashCode() 97 { 98 return (x_ << SIZE_OF_INT) | y_; 99 } 100 101 /*** 102 * Test if the coordinate is less than another. 103 * 104 * @param other the other coordinate 105 * @return whether the current coordinate is less than the other or not 106 */ 107 public boolean lessThan( final Coordinate other ) 108 { 109 if( other.y_ > y_ ) 110 return true; 111 if( other.y_ < y_ ) 112 return false; 113 return other.x_ > x_; 114 } 115 116 /*** 117 * {@inheritDoc} 118 */ 119 public String toString() 120 { 121 return "(" + x_ + ',' + y_ + ")"; 122 } 123 124 /*** 125 * {@inheritDoc} 126 */ 127 public void unmarshall( final InputStream stream ) throws IOException 128 { 129 final DataInputStream input = new DataInputStream( stream ); 130 x_ = input.readInt(); 131 y_ = input.readInt(); 132 } 133 134 /*** 135 * {@inheritDoc} 136 */ 137 public void marshall( final OutputStream stream ) throws IOException 138 { 139 final DataOutputStream output = new DataOutputStream( stream ); 140 output.writeInt( x_ ); 141 output.writeInt( y_ ); 142 } 143 }