Unity开发笔记-Timeline扩展笔记（1）

ILayerable

代码修改动画后推
public static void SetTimeClipExtrapolation(TimelineClip clip,TimelineClip.ClipExtrapolation extrapolation)
{
var type = clip.GetType();
var property = type.GetProperty("postExtrapolationMode");
property.SetValue(clip,extrapolation);
}

TrackAsset内获取绑定对象

public override Playable CreateTrackMixer(PlayableGraph graph, GameObject go, int inputCount)
{
    var director = go.GetComponent<PlayableDirector>();
    var animator = director.GetGenericBinding(this) as Animator;
}

在Clip上显示正确的AnimationClip长度

public override double duration
{    
    get    
    {        
        double length = TimeUtility.GetAnimationClipLength(animationClip);        
        if (length < float.Epsilon)            
            return base.duration;        
        return length;    
    }
}

自定义背景

public class AnimationExtClipEditor:ClipEditor
    {
        public override void DrawBackground(TimelineClip clip, ClipBackgroundRegion region)
        {
            base.DrawBackground(clip, region); 
            
            var ac = clip.asset as AnimationExtClip;
            var blendTime = ac.template.BlendTime;
            if (blendTime <= 0)
            {
                return;
            }

            if (clip.hasBlendIn)
            {
                return;
            }
            var duration = clip.duration;
            float left = region.position.xMin;
            float max = region.position.xMax;
            float right = blendTime / (float)duration * max;
            right = Mathf.Min(right, max);
            var rect = Rect.MinMaxRect(left, region.position.yMin, right, region.position.yMax);
            EditorGUI.DrawRect(rect, Color.green);
        }
    }

外推对Behaviour逻辑的影响

超过Clip范围，外推时State还是Playing
会改变Duration

seekOccur问题

mixer为true，clip对应的behaviour为false

设置TimelineClip的Extrapolation属性

public static void SetTimeClipExtrapolation(TimelineClip clip,TimelineClip.ClipExtrapolation extrapolation)
{
    var type = clip.GetType();
    var property = type.GetProperty("postExtrapolationMode");
    property.SetValue(clip,extrapolation);
}

Clip上显示的文字改变

继承ClipEditor

public override void OnClipChanged(TimelineClip clip)
{
    base.OnClipChanged(clip);
    var extClip = clip.asset as AnimationExtClip;
    if (extClip == null)
    {
        return;
    }

    if (extClip.animationClip != null)
    {
        clip.displayName = extClip.animationClip.name;
    }
}

代码中设置ExposedReference<T>

string guid = GUID.Generate().ToString();
ExposedReference<CinemachineVirtualCameraBase> cam;
cam.exposedName = guid;