public void Create(AnimationClip sourceClip,string targetPath = "Assets/targetClip.anim")
{
    //源clip
    if (sourceClip == null) return;
    //载入目标clip 
    var targetClip = AssetDatabase.LoadAssetAtPath<AnimationClip>(path);
    if (targetClip == null)
    {
        targetClip = new AnimationClip();
        AssetDatabase.CreateAsset(targetClip, path);
    }
    //复制源clip设置
    var setting = AnimationUtility.GetAnimationClipSettings(targetClip);
    setting.loopTime = sourceClip.isLooping;
    targetClip.frameRate = sourceClip.frameRate;
    AnimationUtility.SetAnimationClipSettings(targetClip, setting);
    targetClip.ClearCurves();
    //设置路径为空 （timeline用）
    var relativePath = "";
    //获得曲线集合
    var curves = AnimationUtility.GetCurveBindings(sourceClip);
    foreach (var binding in curves)
    {
        if (binding.propertyName.Contains("m_LocalScale")) continue;
        var curve = AnimationUtility.GetEditorCurve(sourceClip, binding);
        //Debug.Log(binding.path + "     " + binding.propertyName + "       " + binding.type + "  Keys: " + curve.keys.Length);
        var lastT = curve[curve.length - 1].time;
        var lastV = (float)System.Math.Round((double)curve[curve.length - 1].value, 2);
        //压缩帧数
        var length = curve.length / 2;
        var keys = new Keyframe[length];
        var last = false;
        for (int i = 0; i < length; i++)
        {
            var _key = curve[i * 2];
            if (_key.time == lastT)
            {
                keys[i].time = _key.time;
                last = true;
            }
            else
            {
                //压缩精度（小数点两位）
                keys[i].time = (float)System.Math.Round((double)_key.time, 2);
            }
            keys[i].value = (float)System.Math.Round((double)_key.value, 2);
        }
        //还原最后一帧数据，保持clip时长。
        if (last == false)
        {
            System.Array.Resize(ref keys, keys.Length + 1);
            keys[keys.Length - 1] = new Keyframe(lastT, lastV);
        }
        var newcurve = new AnimationCurve(keys);
        targetClip.SetCurve(relativePath, binding.type, binding.propertyName, newcurve);
    }
    // 保存
    AssetDatabase.SaveAssets();
}