You can use transform.rotation like this:
transform.rotation = new Quaternion(rotx, roty, rotz, rotw);
OR
You can use transform.Rotate like this:
transform.Rotate(rotx, roty, rotz);
Documentation for Quaternion
Documentation for transform.rotation
Example for Rotating screen with accelerometer input:
float accelx, accely, accelz = 0;
void Update ()
{
accelx = Input.acceleration.x;
accely = Input.acceleration.y;
accelz = Input.acceleration.z;
transform.Rotate (accelx * Time.deltaTime, accely * Time.deltaTime, accelz * Time.deltaTime);
}
If you want to rotate the object to a specific angle use:
float degrees = 90;
Vector3 to = new Vector3(degrees, 0, 0);
transform.eulerAngles = Vector3.Lerp(transform.rotation.eulerAngles, to, Time.deltaTime);
This will rotate 90 degrees around the x axis.
In order to rotate your game object on its own
int _rotationSpeed = 15;
void Update () {
// Rotation on y axis
transfrom.rotate (0, _rotationSpeed * Time.deltaTime, 0);
}