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  1. JDK
  2. JDK-6829678

StrokeShapeTest: createStrokedShape() behaves differently

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    • 2d
    • b58
    • generic
    • generic
    • Verified

        StrokeShapeTest: createStrokedShape() behaves differently.
        There is overflow in stroking code.

        ------------------StrokeShapeTest.java-----------------
        import java.awt.*;
        import java.awt.geom.Ellipse2D;
        import java.awt.geom.GeneralPath;
        import java.awt.image.BufferedImage;
        import java.io.File;

        import javax.imageio.ImageIO;

        /**
         * @author ###@###.### (Chris Nokleberg)
         * @author ###@###.### (Hiroshi Yamauchi)
         */
        public class StrokeShapeTest {
          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.translate(25, 100);

            Stroke stroke = new BasicStroke(200, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
            Shape shape = new Polygon(new int[] {0, 1500, 0}, new int[] {750, 0, -750}, 3);

            g.scale(.1, .1);
            g.setPaint(Color.BLACK);
            g.setStroke(stroke);
            g.draw(shape);
            g.setPaint(Color.RED);
            g.fill(stroke.createStrokedShape(shape));

            // To visually check it
            //ImageIO.write(image, "PNG", new File(args[0]));

            boolean blackPixelFound = false;
            outer:
            for (int x = 0; x < 200; ++x) {
              for (int y = 0; y < 200; ++y) {
                if (image.getRGB(x, y) == Color.BLACK.getRGB()) {
                  blackPixelFound = true;
                  break outer;
                }
              }
            }
            if (blackPixelFound) {
              throw new RuntimeException("The shape hasn't been filled in red.");
            }
          }
        }

              jgodinez Jennifer Godinez (Inactive)
              jgodinez Jennifer Godinez (Inactive)
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