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From "Alexey Petrenko (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HARMONY-4410) [classlib][awt] The method java.awt.geom.Area.subtract() returns no correct result when the first figure lies inside the second one
Date Thu, 16 Aug 2007 13:45:32 GMT

     [ https://issues.apache.org/jira/browse/HARMONY-4410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alexey Petrenko resolved HARMONY-4410.
--------------------------------------

    Resolution: Fixed

The patch has been applied.
Please verify.

> [classlib][awt] The method java.awt.geom.Area.subtract() returns no correct result when
the first figure lies inside the second one
> -----------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-4410
>                 URL: https://issues.apache.org/jira/browse/HARMONY-4410
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>            Reporter: Nellya Udovichenko
>            Assignee: Alexey Petrenko
>         Attachments: H-4410-test.patch, H-4410.patch
>
>
> There are two polygonal figures: Figure 1 and Figure 2. Figure 2 lies inside Figure 1
and intersects with Figure 1 in two boundary points. At subtraction of Figure 2 from Figure
1 we get no correct result - Figure 1.
> Test:
> import java.awt.*;
> import java.awt.geom.Rectangle2D;
> import java.awt.geom.Area;
> import javax.swing.JFrame;
> import javax.swing.JPanel;
> public class PolygonTest extends JPanel {
>     protected void paintComponent(Graphics g) {
>         Graphics2D g2 = (Graphics2D) g;
>  
>         Rectangle2D rect1 = new Rectangle2D.Double(300, 300, 200, 150);
>         Rectangle2D rect2 = new Rectangle2D.Double(350, 200, 300, 150);
>         Area area1 = new Area(rect1);
>         g2.setColor(Color.green);
>         g2.draw(area1);
> 	
>         Area area2 = new Area(rect2);
>         g2.setColor(Color.red);
>         g2.draw(area2);
> 	Area a = (Area) area1.clone();
> 	a.intersect(area2);
> 	area1.add(area2);
> 	area1.subtract(a);
>         g2.setColor(Color.cyan);
>         g2.draw(area1);
>     }
>     public static void main(String[] args) {
>         JFrame frame = new JFrame();
>         frame.getContentPane().setLayout(new BorderLayout());
>         frame.getContentPane().add(new PolygonTest());
>         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
>         frame.setSize(800, 600);
>         frame.setVisible(true);
>     }
> }

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