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JDK-8316741: fixed BasicStroke.createStrokedShape miter-limits failin…
…g on small shapes
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/* | ||
* Copyright (c) 2023, 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. | ||
*/ | ||
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import java.io.*; | ||
import java.awt.*; | ||
import java.awt.image.*; | ||
import java.awt.geom.*; | ||
import java.util.Arrays; | ||
import javax.imageio.*; | ||
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/** | ||
* @test | ||
* @bug 8316741 | ||
* @summary Verifies that Marlin renderer's Stroker generates properly joins | ||
* in createStrokedShape() | ||
* @run main TestCreateStrokedShapeJoins | ||
*/ | ||
public class TestCreateStrokedShapeJoins { | ||
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static final boolean SAVE_IMAGE = false; | ||
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private final static int W = 200; | ||
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private final static int[] REF_COUNTS = new int[]{4561, 4790, 5499}; | ||
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public static void main(String[] args) throws Exception { | ||
final int[] test = new int[]{ | ||
test(BasicStroke.JOIN_BEVEL), | ||
test(BasicStroke.JOIN_ROUND), | ||
test(BasicStroke.JOIN_MITER) | ||
}; | ||
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System.out.println("test: " + Arrays.toString(test)); | ||
System.out.println("ref: " + Arrays.toString(REF_COUNTS)); | ||
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// check results: | ||
for (int i = 0; i < REF_COUNTS.length; i++) { | ||
if (test[i] != REF_COUNTS[i]) { | ||
throw new RuntimeException("Invalid test[" + i + "]: " + test[i] + " != " + REF_COUNTS[i]); | ||
} | ||
} | ||
} | ||
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private static int test(int join) throws Exception { | ||
final BufferedImage image = new BufferedImage(W, W, BufferedImage.TYPE_INT_ARGB); | ||
final Graphics2D g = image.createGraphics(); | ||
try { | ||
g.setPaint(Color.BLACK); | ||
g.fillRect(0, 0, W, W); | ||
g.setPaint(Color.WHITE); | ||
g.setTransform(new AffineTransform(W, 0, 0, W, 0, 0)); | ||
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final BasicStroke stroke = new BasicStroke(0.15f, 0, join, 10); | ||
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final Path2D p = new Path2D.Float(); | ||
p.moveTo(0.95f, 0.6f); | ||
p.lineTo(0.5f, 0.5f); | ||
p.lineTo(0.95f, 0.4f); | ||
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final Shape outline = stroke.createStrokedShape(p); | ||
g.fill(outline); | ||
} finally { | ||
g.dispose(); | ||
} | ||
if (SAVE_IMAGE) { | ||
final File file = new File("TestCreateStrokedShapeJoins-" + join + ".png"); | ||
System.out.println("Writing " + file.getAbsolutePath()); | ||
ImageIO.write(image, "png", file); | ||
} | ||
int count = 0; | ||
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for (int y = 0; y < W; y++) { | ||
for (int x = 0; x < W; x++) { | ||
final int rgb = image.getRGB(x, y); | ||
final int b = rgb & 0xFF; | ||
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if (b != 0) { | ||
count++; | ||
} | ||
} | ||
} | ||
return count; | ||
} | ||
} |