?? point.java
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/* * Copyright 2003-2004, Franz-Josef Elmer, All rights reserved * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details * (http://www.gnu.org/copyleft/lesser.html). * * You should have received a copy of the GNU Lesser General Public License * along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */package jcckit.util;/** * Immutable class of a two-dimensional point with floating point * coordinates. * * @author Franz-Josef Elmer */public class Point { private final double _x; private final double _y; /** * Creates an instance for the specified vector. The value of the * first/second element of <tt>vector</tt> denotes the x/y value. * If <tt>vector</tt> is <tt>null</tt> or not long enough 0 will be used * as default values. */ public Point(double[] vector) { double x = 0; double y = 0; if (vector != null && vector.length > 0) { x = vector[0]; if (vector.length > 1) { y = vector[1]; } } _x = x; _y = y; } /** Creates an instance for the specified coordinates. */ public Point(double x, double y) { _x = x; _y = y; } /** Returns the x-coordinate of the point. */ public double getX() { return _x; } /** Returns the y-coordinate of the point. */ public double getY() { return _y; }}
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