JDK-6182453 : Filling and drawing same GeneralPath do not match
  • Type: Bug
  • Component: client-libs
  • Sub-Component: 2d
  • Affected Version: 5.0,6
  • Priority: P3
  • Status: Closed
  • Resolution: Duplicate
  • OS: generic,windows_2000
  • CPU: generic,x86
  • Submitted: 2004-10-21
  • Updated: 2011-01-19
  • Resolved: 2006-02-22
Related Reports
Duplicate :  
Description
FULL PRODUCT VERSION :
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 2000 [Version 5.00.2195]
Service pack 4

A DESCRIPTION OF THE PROBLEM :
Sometimes the pixels touched by filling an area and then drawing the same area are not  aligned. The filling seems to 'spill' pixels outside of the outline, and seems not to fill all pixels inside the outline.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
The bug can be seen by running the attached program.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I was expecting to see no visual distortion.
ACTUAL -
Blue pixels of the filling are seen outside the outline. White (background) pixels are left unfilled inside the outline.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;

public class Spill
{
    static public void main(String[] args)
    {
        /* Create an image */
        BufferedImage image = new BufferedImage(500,500,BufferedImage.TYPE_INT_RGB);
        Graphics2D graphics = image.createGraphics();
        graphics.setColor(Color.white);
        graphics.fillRect(0,0,image.getWidth(),image.getHeight());
        /* Make the shape */
        GeneralPath path = new GeneralPath();
        path.moveTo(-5.0f,-5.0f);
        path.lineTo(33.0f,-5.0f);
        path.lineTo(33.0f,19.0f);
        path.lineTo(-5.0f,19.0f);
        path.closePath();
        /* Render without error */
        graphics.translate(200.0,150.0);
        render(graphics,path);
        /* Render with error */
        graphics.translate(0.517747036277655,100.11394841313354);
        render(graphics,path);
        graphics.dispose();
        /* Show image */
        JFrame frame = new JFrame("Spill Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(new JLabel(new ImageIcon(image)));
        frame.pack();
        frame.show();
    }

    static private void render(Graphics2D graphics,GeneralPath path)
    {
        graphics.setColor(Color.blue);
        graphics.fill(path);
        graphics.setColor(Color.red);
        graphics.draw(path);
    }
}

---------- END SOURCE ----------
###@###.### 10/21/04 10:28 GMT

Comments
EVALUATION This bug was fixed within the fix of the 4151279 by using the same code for tracking boundaries of the GeneralPath in filling and drawing code. So, I'm closing this bug as duplicate.
2006-02-22

EVALUATION Contribution-Forum:https://jdk-collaboration.dev.java.net/servlets/ProjectForumMessageView?messageID=11504&forumID=1463
2006-02-17