jdk/test/sun/pisces/ScaleTest.java
author jgodinez
Thu, 21 May 2009 09:56:03 -0700
changeset 3008 e6248b598ca5
child 5506 202f599c92aa
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6829659: Circle is rendered in C shape Reviewed-by: campbell, flar Contributed-by: Google <yamauchi@google.com>
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/*
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 * Copyright 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any 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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public class ScaleTest {
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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(.9, .9);
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    g.setPaint(Color.BLACK);
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    g.setStroke(new BasicStroke(0.5f));
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    g.draw(new Ellipse2D.Double(25, 25, 150, 150));
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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 = 100; x < 200; ++x) {
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      if (image.getRGB(x, 90) != 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("A circle is rendered like a 'C' shape.");
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    }
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  }
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}