/*

 * 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.");

    }

  }

}