/// <summary>Creates a skew matrix from the given angles in radians.</summary>
        /// <param name="radiansX">The X angle, in radians.</param>
        /// <param name="radiansY">The Y angle, in radians.</param>
        /// <returns>A skew matrix.</returns>
        public static Matrix3X2 <T> CreateSkew <T>(T radiansX, T radiansY)
            where T : unmanaged, IFormattable, IEquatable <T>, IComparable <T>
        {
            Matrix3X2 <T> result = Matrix3X2 <T> .Identity;

            T xTan = Scalar.Tan(radiansX);
            T yTan = Scalar.Tan(radiansY);

            result.M12 = yTan;
            result.M21 = xTan;

            return(result);
        }
        /// <summary>Creates a skew matrix from the given angles in radians and a center point.</summary>
        /// <param name="radiansX">The X angle, in radians.</param>
        /// <param name="radiansY">The Y angle, in radians.</param>
        /// <param name="centerPoint">The center point.</param>
        /// <returns>A skew matrix.</returns>
        public static Matrix3X2 <T> CreateSkew <T>(T radiansX, T radiansY, Vector2D <T> centerPoint)
            where T : unmanaged, IFormattable, IEquatable <T>, IComparable <T>
        {
            Matrix3X2 <T> result = Matrix3X2 <T> .Identity;

            T xTan = Scalar.Tan(radiansX);
            T yTan = Scalar.Tan(radiansY);

            T tx = Scalar.Negate(Scalar.Multiply(centerPoint.Y, xTan));
            T ty = Scalar.Negate(Scalar.Multiply(centerPoint.X, yTan));

            result.M12 = yTan;
            result.M21 = xTan;

            result.M31 = tx;
            result.M32 = ty;

            return(result);
        }