private void updateCategory() {
		for (@SuppressWarnings("unused") boolean act : categories) {
			act = false;
		}
		for (ImageLabel act : objects) {
			if (act != null) {
				CategoryType tmp = act.getCategory();
				switch (tmp) {
				case BASS:
					categories[0] = true;
				case BEATS:
					categories[1] = true;
				case EFFECTS:
					categories[2] = true;
				case HARMONY:
					categories[3] = true;
				case MELODY:
					categories[4] = true;
				}
			}
		}
	}