public static void Simplify(this AnimationCurve animationCurve, float errorThreshold, bool isRotation = false)
        {
            if (animationCurve.keys.Length < 3)
            {
                return;
            }
            var cloned = new AnimationCurve();
            cloned.keys = animationCurve.keys;
            var removed = true;
            while (removed)
            {
                removed = false;
                for (var i = animationCurve.keys.Length - 2; i > 0; i--)
                {
                    var key = animationCurve.keys[i];
                    var originalValue = animationCurve.Evaluate(key.time);
                    cloned.RemoveKey(i);
                    var reducedValue = cloned.Evaluate(key.time);
                    var distance = isRotation ? Mathf.Abs(Mathf.DeltaAngle(originalValue, reducedValue)) : Mathf.Abs(originalValue - reducedValue);
                    var threshold = isRotation ? errorThreshold : Mathf.Abs(originalValue * errorThreshold);
                    if (distance <= threshold)
                    {
                        animationCurve.RemoveKey(i);
                        removed = true;
                    }
                    cloned.keys = animationCurve.keys;
                }
            }