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64 lines
2.3 KiB
64 lines
2.3 KiB
1 year ago
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/*
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* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.*;
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import java.awt.geom.Ellipse2D;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import javax.imageio.ImageIO;
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/**
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* @author chrisn@google.com (Chris Nokleberg)
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* @author yamauchi@google.com (Hiroshi Yamauchi)
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*/
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public class ThinLineTest {
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private static final int PIXEL = 381;
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public static void main(String[] args) throws Exception {
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BufferedImage image = new BufferedImage(200, 200, BufferedImage.TYPE_INT_RGB);
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Graphics2D g = image.createGraphics();
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g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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g.setPaint(Color.WHITE);
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g.fill(new Rectangle(image.getWidth(), image.getHeight()));
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g.scale(0.5 / PIXEL, 0.5 / PIXEL);
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g.setPaint(Color.BLACK);
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g.setStroke(new BasicStroke(PIXEL));
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g.draw(new Ellipse2D.Double(PIXEL * 50, PIXEL * 50, PIXEL * 300, PIXEL * 300));
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// To visually check it
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//ImageIO.write(image, "PNG", new File(args[0]));
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boolean nonWhitePixelFound = false;
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for (int x = 0; x < 200; ++x) {
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if (image.getRGB(x, 100) != Color.WHITE.getRGB()) {
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nonWhitePixelFound = true;
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break;
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}
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}
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if (!nonWhitePixelFound) {
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throw new RuntimeException("The thin line disappeared.");
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}
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}
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}
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