Unity3D MouseLook

using System;
using UnityEngine;
/// <summary>
/// Add this to the Camera
/// </summary>
[AddComponentMenu("Camera-Control/Mouse Look")]
public class MouseLook : MonoBehaviour
{
    public MouseLook.RotationAxes axes;
    public float sensitivityX = 15f;
    public float sensitivityY = 15f;
    public float minimumX = -360f;
    public float maximumX = 360f;
    public float minimumY = -60f;
    public float maximumY = 60f;
    private float rotationY;

    public enum RotationAxes
    {
        MouseXAndY,
        MouseX,
        MouseY
    }

    private void Update()
    {
        if (this.axes == MouseLook.RotationAxes.MouseXAndY)
        {
            float y = base.transform.localEulerAngles.y + Input.GetAxis("Mouse X") * this.sensitivityX;
            this.rotationY += Input.GetAxis("Mouse Y") * this.sensitivityY;
            this.rotationY = Mathf.Clamp(this.rotationY, this.minimumY, this.maximumY);
            base.transform.localEulerAngles = new Vector3(-this.rotationY, y, 0f);
        }
        else if (this.axes == MouseLook.RotationAxes.MouseX)
        {
            base.transform.Rotate(0f, Input.GetAxis("Mouse X") * this.sensitivityX, 0f);
        }
        else
        {
            this.rotationY += Input.GetAxis("Mouse Y") * this.sensitivityY;
            this.rotationY = Mathf.Clamp(this.rotationY, this.minimumY, this.maximumY);
            base.transform.localEulerAngles = new Vector3(-this.rotationY, base.transform.localEulerAngles.y, 0f);
        }
    }

    private void Start()
    {
        if (base.GetComponent<Rigidbody>())
        {
            base.GetComponent<Rigidbody>().freezeRotation = true;
        }
    }
}