1 /* 2 * Copyright (c) 2007, 2017 Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package org.jemmy; 27 28 /** 29 * The class for easy computations. 30 * @author shura 31 */ 32 public class Vector { 33 34 private double x; 35 private double y; 36 37 /** 38 * 39 * @param x 40 * @param y 41 */ 42 public Vector(double x, double y) { 43 this.x = x; 44 this.y = y; 45 } 46 47 /** 48 * 49 * @param from 50 * @param to 51 */ 52 public Vector(Point from, Point to) { 53 x = to.x - from.x; 54 y = to.y - from.y; 55 } 56 57 /** 58 * 59 * @return 60 */ 61 public double getX() { 62 return x; 63 } 64 65 /** 66 * 67 * @return 68 */ 69 public double getY() { 70 return y; 71 } 72 73 /** 74 * 75 * @return 76 */ 77 public double lenght() { 78 return Math.sqrt(x*x + y*y); 79 } 80 81 /** 82 * 83 * @param newLenght 84 * @return self 85 */ 86 public Vector setLenght(double newLenght) { 87 double lenght = lenght(); 88 x = x * newLenght / lenght; 89 y = y * newLenght / lenght; 90 return this; 91 } 92 93 /** 94 * @param multiplier 95 * @return self 96 */ 97 public Vector multiply(double multiplier) { 98 x*=multiplier; 99 y*=multiplier; 100 return this; 101 } 102 103 /** 104 * 105 * @return a clone 106 */ 107 @Override 108 public Vector clone() { 109 return new Vector(x, y); 110 } 111 112 /** 113 * 114 * @return 115 */ 116 @Override 117 public String toString() { 118 return "(" + x + "," + y + ")"; 119 } 120 121 /** 122 * Adds another vector <code>(x1 + x2, y1 + y2)</code> 123 * @param v 124 * @return self 125 */ 126 public Vector add(Vector v) { 127 x+=v.x; 128 y+=v.y; 129 return this; 130 } 131 132 133 }