1 /* 2 * Copyright (c) 2009, 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. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 import java.awt.*; 24 import java.awt.geom.Ellipse2D; 25 import java.awt.image.BufferedImage; 26 import java.io.File; 27 import javax.imageio.ImageIO; 28 29 /** 30 * @author chrisn@google.com (Chris Nokleberg) 31 * @author yamauchi@google.com (Hiroshi Yamauchi) 32 */ 33 public class ThinLineTest { 34 private static final int PIXEL = 381; 35 36 public static void main(String[] args) throws Exception { 37 BufferedImage image = new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB); 38 Graphics2D g = image.createGraphics(); 39 40 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); 41 g.setPaint(Color.WHITE); 42 g.fill(new Rectangle(image.getWidth(), image.getHeight())); 43 44 g.scale(0.5 / PIXEL, 0.5 / PIXEL); 45 g.setPaint(Color.BLACK); 46 g.setStroke(new BasicStroke(PIXEL)); 47 g.draw(new Ellipse2D.Double(PIXEL * 50, PIXEL * 50, PIXEL * 300, PIXEL * 300)); 48 49 // To visually check it 50 //ImageIO.write(image, "PNG", new File(args[0])); 51 52 boolean nonWhitePixelFound = false; 53 for (int x = 0; x < 200; ++x) { 54 if (image.getRGB(x, 100) != Color.WHITE.getRGB()) { 55 nonWhitePixelFound = true; 56 break; 57 } 58 } 59 if (!nonWhitePixelFound) { 60 throw new RuntimeException("The thin line disappeared."); 61 } 62 } 63 }