Name: wl91122 Date: 09/08/99


java.awt.Polygon.getBounds() does not update the bounds (a protected Rectangle) when the Polygon is changed. Once 'bounds' is allocated,
successive calls to getBounds() will return the same bounds value (see source code: java.awt.Polygon.java). The trouble for me is that
getBounds() is called internally by the java.awt.Polygon.contains(...) routine. After I change the size or shape of a polygon, calls to contains(...)
will then not work correctly. Run these codes:

import java.awt.Polygon;

class test
{ public static void main(String[] args)
  { Polygon p = new Polygon(new int[] {10,10,20,20},new int[] {10,20,20,10},4); // actually a rectanle
      System.out.print("Should be true, output is: ");
      System.out.println( p.contains(15,15) ); // e.g. test a mouse click

      for (int i=0;i<p.npoints;i++) { p.xpoints[i] *= 2;p.ypoints[i] *= 2;} // if you repaint the polygon and change its size
      System.out.print("Should be true, output is: ");
      System.out.println(p.contains(30,30));
   }
}

The second time println will produce 'false', which is obvious wrong.
(Review ID: 94671)
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