【Unity】TimeLine学习笔记（一）：自定义轨道（Track）

逃离我推掉我的手 2023-08-17 17:04 78阅读 0赞

## API参考 ##

*  TrackAsset：[https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackAsset.html][https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackAsset.html]
 *  TrackBindingTypeAttribute：[https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackBindingTypeAttribute.html][https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackBindingTypeAttribute.html]
 *  TrackClipTypeAttribute：
 *  [https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackClipTypeAttribute.html][https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackClipTypeAttribute.html]
 *  TrackColorAttribute：[https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackColorAttribute.html][https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackColorAttribute.html]

## 解释 ##

TrackAsset是自定义轨道时需要继承的类，类中包含多种属性和方法，涉及对轨道内容及轨道片段（TrackClip）的管理和操作。

using UnityEngine;
    using UnityEngine.Timeline;
    
    public class DialogueTrack : TrackAsset
    {
        
    }

TrackBindingTypeAttribute、TrackClipTypeAttribute 和 TrackColorAttribute是三个类属性，各自的作用为——

TrackBindingTypeAttribute：向轨道拖放物体时，将执行“绑定类型”的检查。比如：若物体中不含有Light组件，则在拖放物体时，自动添加绑定的组件类型。

using UnityEngine;
    using UnityEngine.Timeline;
    
    [TrackBindingType(typeof(Light), TrackBindingFlags.AllowCreateComponent)]
    public class LightTrack : TrackAsset
    {
        
    }

TrackClipTypeAttribute：指定可以拖放以及创建（使用TrackAsset类中的方法）的片段类型（片段类型也可自定义）。

using UnityEngine;
    using UnityEngine.Timeline;
    
    [TrackClipType(typeof(DialogueClip))]
    public class DialogueTrack : TrackAsset
    {
       
    }

TrackColorAttribute：指定轨道及其片段的颜色。不过，这只是显示边界的颜色。

using UnityEngine;
    using UnityEngine.Timeline;
    
    [TrackColor(1.0f, 0.0f, 0.0f)]            // red
    public class DialogueTrack : TrackAsset
    {
       
    }

![20190930102909734.png][]

[https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackAsset.html]: https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackAsset.html
[https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackBindingTypeAttribute.html]: https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackBindingTypeAttribute.html
[https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackClipTypeAttribute.html]: https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackClipTypeAttribute.html
[https_docs.unity3d.com_2018.3_Documentation_ScriptReference_Timeline.TrackColorAttribute.html]: https://docs.unity3d.com/2018.3/Documentation/ScriptReference/Timeline.TrackColorAttribute.html
[20190930102909734.png]: /images/20230808/e5b74e2900ba45899c562ff7ebc48d01.png