Method drawGrid

ij/src/main/java/ij/plugin/Grid.java:116–146

(Shape shape)

	}

	void drawGrid(Shape shape) {
		if (shape==null) {
			Overlay overlay = imp.getOverlay();
			if (overlay!=null) {
				if (overlay.size()>1) {
					overlay.remove(GRID);
					imp.draw();
				} else
					imp.setOverlay(null);
			}
		} else {
			Roi roi = new ShapeRoi(shape);
			roi.setStrokeColor(Colors.getColor(color,Color.cyan));
			if (bold && linesV*linesH<5000) {
				ImageCanvas ic = imp.getCanvas();
				double mag = ic!=null?ic.getMagnification():1.0;
				double width = 2.0;
				if (mag<1.0)
					width = width/mag;
				roi.setStrokeWidth(width);
			}
			IJ.showStatus(linesV*linesH+" nodes");
			Overlay overlay = imp.getOverlay();
			if (overlay!=null)
				overlay.remove(GRID);
			else
				overlay = new Overlay();
			overlay.add(roi, GRID);
			imp.setOverlay(overlay);
		}
	}

	private boolean showDialog() {
		isMacro = Macro.getOptions()!=null;