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.image; 27 28 29 import java.awt.image.BufferedImage; 30 import org.jemmy.image.pixel.AverageDistanceComparator; 31 32 33 /** 34 * Compares two images calculating average color distance between pixels and 35 * comparing it to the threshold value. See {@linkplain NaturalImageComparator 36 * NaturalImageComparator} for color comparison details. 37 * 38 * @author KAM 39 */ 40 public class AverageDistanceImageComparator extends BufferedImageComparator { 41 42 /** 43 * Creates comparator with the default sensitivity value = 0.02 44 * (around 5 in 0-255 color component value). 45 * @see #AverageDistanceImageComparator(double) 46 */ 47 public AverageDistanceImageComparator() { 48 this(0.02); 49 } 50 51 /** 52 * Creates comparator with the specified sensitivity value 53 * @param sensitivity Maximum threshold for average 3-D distance between 54 * colors in 3-D sRGB color space for images to be considered equal. 55 * Meaningful values lay between 0 and approx 1.733. 0 means colors should 56 * be equal to pass the comparison, 1.733 (which is more than square root 57 * of 3) means that comparison will be passed even if all the colors are 58 * completely different. 59 */ 60 public AverageDistanceImageComparator(double sensitivity) { 61 super(new AverageDistanceComparator(sensitivity)); 62 } 63 64 public void setSensitivity(double sensitivity) { 65 ((AverageDistanceComparator)getRasterComparator()).setThreshold(sensitivity); 66 } 67 public double getSensitivity() { 68 return ((AverageDistanceComparator)getRasterComparator()).getThreshold(); 69 } 70 }