my helpers for unity animation curves

AnimationCurveHelpers.cs

using UnityEngine;

namespace ScriptTools
{
    public static class AnimationCurveHelpers
    {
        /// <summary>
        /// A helper for flipping an animation curve.
        /// </summary>
        /// <param name="curve"></param>
        /// <returns>curve, but flipped vertically.</returns>
        public static AnimationCurve FlippedY(this AnimationCurve curve)
        {
            // create flipped speedcurve
            Keyframe[] keys = new Keyframe[curve.length];
            for (int i = 0; i < curve.length; i++)
            {
                Keyframe key = curve.keys[i];
                keys[i] = new Keyframe(key.time, 1 - key.value)
                {
                    inTangent = Mathf.Clamp(-key.inTangent, -9999999999f, 9999999999f),
                    outTangent = Mathf.Clamp(-key.outTangent, -9999999999f, 9999999999f),
                    weightedMode = key.weightedMode,
                    inWeight = key.inWeight,
                    outWeight = key.outWeight
                };
            }
            return new AnimationCurve(keys);
        }

        /// <summary>
        /// A helper for flipping an animation curve.
        /// </summary>
        /// <param name="curve"></param>
        /// <returns>curve, but flipped horizontally.</returns>
        public static AnimationCurve FlippedX(this AnimationCurve curve)
        {
            // create flipped speedcurve
            Keyframe[] keys = new Keyframe[curve.length];
            for (int i = 0; i < curve.length; i++)
            {
                Keyframe key = curve.keys[i];
                keys[i] = new Keyframe(1 - key.time, key.value)
                {
                    inTangent = Mathf.Clamp(-key.inTangent, -9999999999f, 9999999999f),
                    outTangent = Mathf.Clamp(-key.outTangent, -9999999999f, 9999999999f),
                    weightedMode = key.weightedMode,
                    inWeight = key.inWeight,
                    outWeight = key.outWeight
                };
            }
            return new AnimationCurve(keys);
        }
    }
}