UnityEditor.AnimationUtility.GetKeyBroken C# (CSharp) Method

        internal static bool GetKeyBroken(Keyframe key)
        {
            return ((key.tangentMode & kBrokenMask) != 0);
        }

        public static void SetKeyModeFromContext(AnimationCurve curve, int keyIndex)
        {
            Keyframe key   = curve[keyIndex];
            bool     flag  = false;
            bool     flag2 = false;

            if (keyIndex > 0)
            {
                if (AnimationUtility.GetKeyBroken(curve[keyIndex - 1]))
                {
                    flag = true;
                }
                if (AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]) == AnimationUtility.TangentMode.ClampedAuto)
                {
                    flag2 = true;
                }
            }
            if (keyIndex < curve.length - 1)
            {
                if (AnimationUtility.GetKeyBroken(curve[keyIndex + 1]))
                {
                    flag = true;
                }
                if (AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]) == AnimationUtility.TangentMode.ClampedAuto)
                {
                    flag2 = true;
                }
            }
            AnimationUtility.SetKeyBroken(ref key, flag);
            if (flag && !flag2)
            {
                if (keyIndex > 0)
                {
                    AnimationUtility.SetKeyLeftTangentMode(ref key, AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]));
                }
                if (keyIndex < curve.length - 1)
                {
                    AnimationUtility.SetKeyRightTangentMode(ref key, AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]));
                }
            }
            else
            {
                AnimationUtility.TangentMode tangentMode = AnimationUtility.TangentMode.Free;
                if ((keyIndex == 0 || AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]) == AnimationUtility.TangentMode.ClampedAuto) && (keyIndex == curve.length - 1 || AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]) == AnimationUtility.TangentMode.ClampedAuto))
                {
                    tangentMode = AnimationUtility.TangentMode.ClampedAuto;
                }
                else if ((keyIndex == 0 || AnimationUtility.GetKeyRightTangentMode(curve[keyIndex - 1]) == AnimationUtility.TangentMode.Auto) && (keyIndex == curve.length - 1 || AnimationUtility.GetKeyLeftTangentMode(curve[keyIndex + 1]) == AnimationUtility.TangentMode.Auto))
                {
                    tangentMode = AnimationUtility.TangentMode.Auto;
                }
                AnimationUtility.SetKeyLeftTangentMode(ref key, tangentMode);
                AnimationUtility.SetKeyRightTangentMode(ref key, tangentMode);
            }
            curve.MoveKey(keyIndex, key);
        }