Creates a rotation which rotates from fromDirection to toDirection.
Usually you use this to rotate a transform so that one of its axes eg. the y-axis - follows a target direction toDirection in world space.
using UnityEngine;
public class Example : MonoBehaviour { void Start() { // Sets the rotation so that the transform's y-axis goes along the z-axis transform.rotation = Quaternion.FromToRotation(Vector3.up, transform.forward); } }