metaClient/Assets/Plugins/RootMotion/FinalIK/_DEMOS/Aim IK/Scripts/AimSwing.cs

using UnityEngine;
using System.Collections;
using RootMotion.FinalIK;

namespace RootMotion.Demos {

	public class AimSwing : MonoBehaviour {

		public AimIK ik;
		[Tooltip("The direction of the animated weapon swing in character space. Tweak this value to adjust the aiming.")] public Vector3 animatedSwingDirection = Vector3.forward;

		void LateUpdate () {
			ik.solver.axis = ik.solver.transform.InverseTransformVector(ik.transform.rotation * animatedSwingDirection);
		}
	}
}