Method dirty

src/main/java/fieldbox/boxes/Drawing.java:137–142

call this to request a redraw at the next available animation cycle

(Box b)

	 * call this to request a redraw at the next available animation cycle
	 */
	static public void dirty(Box b) {
		// which layer needs updating?
		String layerName = b.properties.getOr(FLineDrawing.layer, () -> "__main__");

		dirty(b, layerName);
	}

	static public void dirty(Box b, String explicitLayerName) {