GeneralPath precision limit too high

Name: mc57594 Date: 07/01/99

The following code demonstrates a failure to give the correct
boolean result for a point in a GeneralPath. Notice that, for me
at least, the first scaling succeeds while the second fails. Is
this a feature or a bug or a possibility for an enhancement?


import java.awt.geom.*;
 
public class test {
 
   private GeneralPath gp;
 
   public test() {
      make2GP();
   }
 
   public void make2GP() {
 
 
      double[] scale = {399.9999, 400.0};
      // success is 0.0025000006
      // failure is 0.0025
 
      for ( int i = 0; i < scale.length; i++ ) {
         gp = new GeneralPath(GeneralPath.WIND_NON_ZERO);
         
         float x1 = (float) (1.0/scale[i]);
         float y1 = (float) (1.0/scale[i]);
 
         float x2 = (float) (-1.0/scale[i]);
         float y2 = (float) (1.0/scale[i]);
 
         float x3 = (float) (-1.0/scale[i]);
         float y3 = (float) (-1.0/scale[i]);
 
         float x4 = (float) (1.0/scale[i]);
         float y4 = (float) (-1.0/scale[i]);
 
         gp.moveTo(x1, y1);
         gp.lineTo(x2, y2);
         gp.lineTo(x3, y3);
         gp.lineTo(x4, y4);
         gp.closePath();
 
         System.err.println( "\nChecking scale: " + scale[i] );
         if ( gp.contains( 0.0f, 0.0f ) )
            System.err.println("gp contains 0.0, 0.0");
         else
            System.err.println("gp does NOT contain 0.0, 0.0");
 
         System.err.println( gp.getBounds2D() );
      }
   }
 
   static public void main(String args[]) {
      test s = new test();
   }
}
(Review ID: 85105)
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