/*
* Copyright (c) 2009, 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.*;
import java.awt.geom.Ellipse2D;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
/**
* @author chrisn@google.com (Chris Nokleberg)
* @author yamauchi@google.com (Hiroshi Yamauchi)
*/
public class ThinLineTest {
private static final int PIXEL = 381;
public static void main(String[] args) throws Exception {
BufferedImage image = new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g.setPaint(Color.WHITE);
g.fill(new Rectangle(image.getWidth(), image.getHeight()));
g.scale(0.5 / PIXEL, 0.5 / PIXEL);
g.setPaint(Color.BLACK);
g.setStroke(new BasicStroke(PIXEL));
g.draw(new Ellipse2D.Double(PIXEL * 50, PIXEL * 50, PIXEL * 300, PIXEL * 300));
// To visually check it
//ImageIO.write(image, "PNG", new File(args[0]));
boolean nonWhitePixelFound = false;
for (int x = 0; x < 200; ++x) {
if (image.getRGB(x, 100) != Color.WHITE.getRGB()) {
nonWhitePixelFound = true;
break;
}
}
if (!nonWhitePixelFound) {
throw new RuntimeException("The thin line disappeared.");
}
}
}