public int getAdjacentRow(int rotation, int row) {
		switch(rotation) {
		case Hex.RIGHT:
		case Hex.LEFT:
			return row;
		case Hex.UP_LEFT:
		case Hex.UP_RIGHT:
			return row - 1;
		case Hex.DOWN_RIGHT:
		case Hex.DOWN_LEFT:
			return row + 1;
		default:
			return -1;
		}
	}