| /* |
| * Copyright (c) 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.awt.Color; |
| import java.awt.image.BufferedImage; |
| |
| public class ImageComparator { |
| double accuracy; |
| int errorCounter = 0; |
| double maxError = 0f; |
| |
| int rMask = 0x00FF0000; |
| int gMask = 0x0000FF00; |
| int bMask = 0x000000FF; |
| |
| int rShift = 16; |
| int gShift = 8; |
| int bShift = 0; |
| |
| public ImageComparator() { |
| accuracy = 0; |
| } |
| |
| public ImageComparator(double accuracy) { |
| this.accuracy = accuracy; |
| } |
| |
| public ImageComparator(double accuracy, int rBits, int gBits, int bBits) { |
| this.accuracy = accuracy; |
| rShift += (8 - rBits); |
| gShift += (8 - gBits); |
| bShift += (8 - bBits); |
| } |
| |
| public boolean compare(int c1, int c2) { |
| int d1 = Math.abs(((c1&bMask)>>bShift) - ((c2&bMask)>>bShift)); |
| int d2 = Math.abs(((c1&gMask)>>gShift) - ((c2&gMask)>>gShift)); |
| int d3 = Math.abs(((c1&rMask)>>rShift) - ((c2&rMask)>>rShift)); |
| if (d1 < d2) d1 = d2; |
| if (d1 < d3) d1 = d3; |
| if (d1 >= accuracy) { |
| errorCounter++; |
| if (d1 > maxError) maxError = d1; |
| return false; |
| } |
| return true; |
| } |
| |
| public boolean compare(double r1, double g1, double b1, |
| double r2, double g2, double b2) |
| { |
| double d1 = Math.abs(r1 - r2); |
| double d2 = Math.abs(g1 - g2); |
| double d3 = Math.abs(b1 - b2); |
| if (d1 < d2) d1 = d2; |
| if (d1 < d3) d1 = d3; |
| if (d1 >= accuracy) { |
| errorCounter++; |
| if (d1 > maxError) maxError = d1; |
| return false; |
| } |
| return true; |
| } |
| |
| public boolean compare(Color c1, Color c2) { |
| return compare(c1.getRed(), c1.getGreen(), c1.getBlue(), |
| c2.getRed(), c2.getGreen(), c2.getBlue()); |
| } |
| |
| public boolean compare(BufferedImage img1, BufferedImage img2) { |
| boolean result = true; |
| if (img1.getWidth() != img2.getWidth() || |
| img1.getHeight() != img2.getHeight()) { |
| throw new IllegalArgumentException( |
| "Images have different width or height"); |
| } |
| for (int i = 0; i < img1.getWidth(); i++) { |
| for (int j = 0; j < img1.getHeight(); j++) { |
| boolean cmp = compare(img1.getRGB(i,j), img2.getRGB(i,j)); |
| result = cmp && result; |
| } |
| } |
| return result; |
| } |
| |
| public void resetStat() { |
| errorCounter = 0; |
| maxError = 0; |
| } |
| |
| public String getStat() { |
| return "Accuracy " + accuracy + ". Errors " + errorCounter + |
| ". Max error " + maxError; |
| } |
| |
| boolean compare(BufferedImage dst, BufferedImage gldImage, int x0, int y0, |
| int dx, int dy) |
| { |
| int width = gldImage.getWidth(); |
| int height = gldImage.getHeight(); |
| |
| if (x0 < 0) x0 = 0; |
| if (x0 > width - dx) x0 = width - dx; |
| if (y0 < 0) y0 = 0; |
| if (y0 > height - dy) y0 = height - dy; |
| |
| int c = 0; |
| |
| boolean result = true; |
| for (int i = x0; i < x0 + dx; i++) { |
| for (int j = y0; j < y0 + dy; j++) { |
| boolean cmp = compare(dst.getRGB(i-x0,j-y0), |
| gldImage.getRGB(i,j)); |
| result = cmp && result; |
| } |
| } |
| return result; |
| } |
| } |