public static CurveChangeType GetChangeType(this AnimationClip clip, ref UInt64 curveVersion)
{
var version = clip.ClipVersion();
var changeType = CurveChangeType.None;
if ((curveVersion >> 32) != (version >> 32))
{
changeType = CurveChangeType.CurveAddedOrRemoved;
}
else if (curveVersion != version)
{
changeType = CurveChangeType.CurveModified;
}
curveVersion = version;
return(changeType);
}