Need a way to Copy RecordableClip in AnimationPlayableAsset in timeline's AnimationTrack

My copy tool is nearly done, only AnimationTrack with RecordableClip has problem,

My code is Right below :


void CopyAnimationTrack()
{

AnimationTrack originAnimationTrack = originTrackAsset as AnimationTrack;
newTrackAsset = newTimeLine.CreateTrack(originAnimationTrack.GetType(), parent, originAnimationTrack.name);

AnimationTrack newAnimationTrack = newTrackAsset as AnimationTrack;
IEnumerable<TimelineClip> clips = originAnimationTrack.GetClips();
IEnumerator iEnumeratorOfClips = clips.GetEnumerator();
while (iEnumeratorOfClips.MoveNext())
{
TimelineClip originTimelineClip = iEnumeratorOfClips.Current as TimelineClip;
TimelineClip newTimelineClip;
AnimationClip originAnimationClip = originTimelineClip.animationClip;
if (!originAnimationClip.name.Contains("Recorded"))
{
newTimelineClip = newAnimationTrack.CreateClip(originTimelineClip.animationClip);

}
else
{
AnimationPlayableAsset originAnimationPlayableAsset = originTimelineClip.asset as AnimationPlayableAsset;

newTimelineClip = newAnimationTrack.CreateRecordableClip(originAnimationPlayableAsset.clip.name);

AnimationPlayableAsset newAnimationPlayableAsset = newTimelineClip.asset as AnimationPlayableAsset;
newAnimationPlayableAsset.matchTargetFields = originAnimationPlayableAsset.matchTargetFields;
newAnimationPlayableAsset.useTrackMatchFields = originAnimationPlayableAsset.useTrackMatchFields;

AnimationClip animationClip = Instantiate(originTimelineClip.animationClip);
newAnimationPlayableAsset.clip = animationClip;
AssetDatabase.SaveAssets();
//AnimationClip newAnimationClip = Instantiate(timelineClip.animationClip);
//SaveFile(newAnimationTrack, newAnimationClip);
//newTimelineClip = newAnimationTrack.CreateClip(newAnimationClip);
//Debug.Log("Creat New:" + timelineClip.animationClip);

}

newTimelineClip.blendInCurveMode = originTimelineClip.blendInCurveMode;
newTimelineClip.blendInDuration = originTimelineClip.blendInDuration;
newTimelineClip.blendOutCurveMode = originTimelineClip.blendOutCurveMode;
newTimelineClip.blendOutDuration = originTimelineClip.blendOutDuration;
newTimelineClip.clipIn = originTimelineClip.clipIn;
newTimelineClip.displayName = originTimelineClip.displayName;
newTimelineClip.duration = originTimelineClip.duration;
newTimelineClip.easeInDuration = originTimelineClip.easeInDuration;
newTimelineClip.easeOutDuration = originTimelineClip.easeOutDuration;
newTimelineClip.mixInCurve = originTimelineClip.mixInCurve;
newTimelineClip.mixOutCurve = originTimelineClip.mixOutCurve;
newTimelineClip.start = originTimelineClip.start;
newTimelineClip.timeScale = originTimelineClip.timeScale;

}
}




My problem is :
1. Code above will execute success on AnimationTrack but in RecordableClip case, the clip will show "Type mismatch", and if copy new Timeline to another project, this clip will turn to "None", is there anything wrong in my code? Or is there a way to correct the "Type mismatch"?

2. I use 2018.1.0b2 it work fine but 2017.2.1 has no CreateRecordableClip to use, is there any way to get RecordableClip in 2017 ?

BTW: I convert RecordableClip in origin AnimationTrack to AnimationClip first.

Thx

 

Thx for you reply.

I found AddObjectToAsset to add animation clip to the timline asset, now all work fine in 2018.1.0b2,

but 2017.2.1p2 still can't create RecordableClip , so I use CreateClip. It look well, but can't convert back to infinite clip.

Is there any way to achieve that?

Thx.