Java ShapeRoi.xor Examples

Example #1

File: Selection.java Project: dscho/ImageJA

 void invert(ImagePlus imp) {
   Roi roi = imp.getRoi();
   if (roi == null || !roi.isArea()) {
     IJ.error("Inverse", "Area selection required");
     return;
   }
   ShapeRoi s1, s2;
   if (roi instanceof ShapeRoi) s1 = (ShapeRoi) roi;
   else s1 = new ShapeRoi(roi);
   s2 = new ShapeRoi(new Roi(0, 0, imp.getWidth(), imp.getHeight()));
   imp.setRoi(s1.xor(s2));
 }