Animation C# Jobs 小さなサンプル

Sample.cs

using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Experimental.Animations;
using Unity.Collections;

public class Sample : MonoBehaviour
{
    private NativeArray<TransformStreamHandle> joints;
    private NativeArray<TransformSceneHandle> effectors;
    private PlayableGraph graph;

    void Awake()
    {
        var animator = GetComponent<Animator>();
        graph = PlayableGraph.Create(name);

        joints = new NativeArray<TransformStreamHandle>(4, Allocator.Persistent)
        {
            [0] = animator.BindStreamTransform(transform.Find("Bone1")),
            [1] = animator.BindStreamTransform(transform.Find("Bone1/Bone2")),
            [2] = animator.BindStreamTransform(transform.Find("Bone1/Bone2/Bone3")),
            [3] = animator.BindStreamTransform(transform.Find("Bone1/Bone2/Bone3/Bone4"))
        };
        AnimatorUtility.OptimizeTransformHierarchy(gameObject, null);

        effectors = new NativeArray<TransformSceneHandle>(4, Allocator.Persistent)
        {
            [0] = animator.BindSceneTransform(new GameObject().transform),
            [1] = animator.BindSceneTransform(new GameObject().transform),
            [2] = animator.BindSceneTransform(new GameObject().transform),
            [3] = animator.BindSceneTransform(new GameObject().transform),
        };

        var playable = AnimationScriptPlayable.Create(graph, new SampleJob()
        {
            effectors = effectors,
            joints = joints,
        });

        AnimationPlayableUtilities.Play(animator, playable, graph);
    }

    void OnDestroy()
    {
        AnimatorUtility.DeoptimizeTransformHierarchy(gameObject);
        graph.Destroy();
        effectors.Dispose();
        joints.Dispose();
    }
}

SampleJob.cs

using UnityEngine.Experimental.Animations;
using Unity.Collections;

public struct SampleJob : IAnimationJob
{
    public NativeArray<TransformStreamHandle> joints;
    public NativeArray<TransformSceneHandle> effectors;
 
    public void ProcessAnimation(AnimationStream stream)
    {
        for (int i=0; i<joints.Length; i++)
        {
            // effectorから取得してストリームに書き込む
            var rotation = effectors[i].GetLocalRotation(stream);
            joints[i].SetLocalRotation(stream, rotation);
        }
    }

    public void ProcessRootMotion(AnimationStream stream){}
}