1 /* Dimension2D.java -- abstraction of a dimension 2 Copyright (C) 1999, 2000, 2002 Free Software Foundation 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package java.awt.geom; 40 41 /** 42 * This stores a dimension in 2-dimensional space - a width (along the x-axis) 43 * and height (along the y-axis). The storage is left to subclasses. 44 * 45 * @author Per Bothner (bothner@cygnus.com) 46 * @author Eric Blake (ebb9@email.byu.edu) 47 * @since 1.2 48 * @status updated to 1.4 49 */ 50 public abstract class Dimension2D implements Cloneable 51 { 52 /** 53 * The default constructor. 54 */ Dimension2D()55 protected Dimension2D() 56 { 57 } 58 59 /** 60 * Get the width of this dimension. A negative result, while legal, is 61 * undefined in meaning. 62 * 63 * @return the width 64 */ getWidth()65 public abstract double getWidth(); 66 67 /** 68 * Get the height of this dimension. A negative result, while legal, is 69 * undefined in meaning. 70 * 71 * @return the height 72 */ getHeight()73 public abstract double getHeight(); 74 75 /** 76 * Set the size of this dimension to the requested values. Loss of precision 77 * may occur. 78 * 79 * @param w the new width 80 * @param h the new height 81 */ setSize(double w, double h)82 public abstract void setSize(double w, double h); 83 84 /** 85 * Set the size of this dimension to the requested value. Loss of precision 86 * may occur. 87 * 88 * @param d the dimension containing the new values 89 * 90 * @throws NullPointerException if d is null 91 */ setSize(Dimension2D d)92 public void setSize(Dimension2D d) 93 { 94 setSize(d.getWidth(), d.getHeight()); 95 } 96 97 /** 98 * Create a new dimension of the same run-time type with the same contents 99 * as this one. 100 * 101 * @return the clone 102 * 103 * @exception OutOfMemoryError If there is not enough memory available. 104 * 105 * @since 1.2 106 */ clone()107 public Object clone() 108 { 109 try 110 { 111 return super.clone(); 112 } 113 catch (CloneNotSupportedException e) 114 { 115 throw (Error) new InternalError().initCause(e); // Impossible 116 } 117 } 118 } // class Dimension2D 119