Method run

ij/src/main/java/ij/plugin/RoiScaler.java:17–39

(String arg)

	private boolean centered;

	public void run(String arg) {
		ImagePlus imp = IJ.getImage();
		Roi roi = imp.getRoi();
		if (roi==null) {
			IJ.error("Scale", "This command requires a selection");
			return;
		}
		if (!IJ.isMacro() && !imp.okToDeleteRoi())
			return;
		if (!showDialog())
			return;
		if (!IJ.macroRunning()) {
			defaultXScale = xscale;
			defaultYScale = yscale;
		}
		Roi roi2 = scale(roi, xscale, yscale, centered);
		if (roi2==null)
			return;
		Undo.setup(Undo.ROI, imp);
		roi = (Roi)roi.clone();
		imp.setRoi(roi2);
		Roi.setPreviousRoi(roi);
	}
	
	public boolean showDialog() {
		GenericDialog gd = new GenericDialog("Scale Selection");