Unity Timeline扩展 设置自定义PlayableBehaviour Track

https://blogs.unity3d.com/cn/2018/09/05/extending-timeline-a-practical-guide/
https://blog.csdn.net/u011643463/article/details/82585846

引言

Timeline已经很常用了，但是项目往往需要自定义timeline来实现一些可选的功能，如自定义景深，如果需要动态直观的的改变，就需要用到自定义timeline。这里是配合postproces v2来做的，unity版本2019.4.4 timeline是v1.2.14

创建两个文件

unity提供了一个模板
直接填就好了很方便
\

设置PlayableAsset

// DofPlayableBehaviour.cs
[System.Serializable]
public class DofPlayableAsset : PlayableAsset
{
    public PostProcessProfile VolumeProfile;

    public float FocusDistance;


    // Factory method that generates a playable based on this asset
    public override Playable CreatePlayable(PlayableGraph graph, GameObject go)
    {
        var playable = ScriptPlayable<DofPlayableBehaviour>.Create(graph);
        var dofBehaviour = playable.GetBehaviour();

        //dofBehaviour.VolumeProfile = VolumeProfile.Resolve(graph.GetResolver());
        dofBehaviour.VolumeProfile = VolumeProfile;
        dofBehaviour.Distance = FocusDistance;

        return playable;
    }
}

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设置PlayableBehaivour

这个脚本会挂到对应的Asset上
所以在Asset里去关联就好了

// DofPlayableBehaviour.cs
public class DofPlayableBehaviour : PlayableBehaviour
{
    public float Distance;
    public PostProcessProfile VolumeProfile;
    private DepthOfField m_DepthOfField;


    // Called when the owning graph starts playing
    public override void OnGraphStart(Playable playable)
    {
        VolumeProfile.TryGetSettings(out m_DepthOfField);
    }

    // Called when the owning graph stops playing
    public override void OnGraphStop(Playable playable)
    {
        
    }

    // Called when the state of the playable is set to Play
    public override void OnBehaviourPlay(Playable playable, FrameData info)
    {
        
    }

    // Called when the state of the playable is set to Paused
    public override void OnBehaviourPause(Playable playable, FrameData info)
    {
        
    }

    // Called each frame while the state is set to Play
    public override void PrepareFrame(Playable playable, FrameData info)
    {
        SetFoucusDistance();
    }

    public void SetFoucusDistance()
    {

        m_DepthOfField.focusDistance.value = Distance;

        Debug.Log($"SetFoucusDistance {Distance}");
    }
}
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• 然后添加playabletrack
• 右键添加asset，或者直接拖拽

接下来是混合

要用到4个代码 (可见 不混合的方式还是比较简单的