PlayableOutputのターゲットを切り替えるサンプル

ChangeTargetAnimator.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Animations;

public class ChangeTargetAnimator : MonoBehaviour 
{
	PlayableGraph graph;
	AnimationPlayableOutput output;
	AnimationClipPlayable clipPlayable;

	[SerializeField] Animator[] animators;
	[SerializeField] AnimationClip clip;

	void Awake()
	{
		graph = PlayableGraph.Create ();
	}

	void Start()
	{
		clipPlayable = AnimationClipPlayable.Create (graph, clip);
		output = AnimationPlayableOutput.Create (graph, "animation", null);
		output.SetSourcePlayable (clipPlayable);

		graph.Play ();
	}

	void OnGUI()
	{
		foreach( var anim in animators){
			if (GUILayout.Button (anim.name)) {
				output.SetTarget (anim);
				clipPlayable.SetTime (0);
			}
		}
	}

	void OnDestroy()
	{
		graph.Destroy ();
	}
}