Transform.rotation

Description

The rotation of the transform in world space stored as a Quaternion.

Unity stores rotations as Quaternions internally. To rotate an object, use Transform.Rotate. Use Transform.eulerAngles for setting the rotation as euler angles.

    // Reset the world rotation
    transform.rotation = Quaternion.identity;

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Example() {
        transform.rotation = Quaternion.identity;
    }
}

Another example:

// Smoothly tilts a transform towards a target rotation.
var smooth = 2.0;
var tiltAngle = 30.0;
function Update () {
    var tiltAroundZ = Input.GetAxis("Horizontal") * tiltAngle;
    var tiltAroundX = Input.GetAxis("Vertical") * tiltAngle;
    var target = Quaternion.Euler (tiltAroundX, 0, tiltAroundZ);
    // Dampen towards the target rotation
    transform.rotation = Quaternion.Slerp(transform.rotation, target,  Time.deltaTime * smooth);
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public float smooth = 2.0F;
    public float tiltAngle = 30.0F;
    void Update() {
        float tiltAroundZ = Input.GetAxis("Horizontal") * tiltAngle;
        float tiltAroundX = Input.GetAxis("Vertical") * tiltAngle;
        Quaternion target = Quaternion.Euler(tiltAroundX, 0, tiltAroundZ);
        transform.rotation = Quaternion.Slerp(transform.rotation, target, Time.deltaTime * smooth);
    }
}