/// <summary>
        /// Create a scale transform that scales around a given scale center (pivot point)
        /// </summary>
        /// <param name="pivot">pivot point</param>
        /// <param name="scaleX">The scale factor in x-direction.</param>
        /// <param name="scaleY">The scale factor in y-direction.</param>
        /// <returns>A <see cref="Transformation2D"/> that scales around a given pivot point.</returns>
        public static Transformation2D CreateScaleAround(Vector2 pivot, float scaleX, float scaleY)
        {
            var t = new Transformation2D();

            t.TranslateGlobal(-pivot);
            t.ScaleGlobal(scaleX, scaleY);
            t.TranslateGlobal(pivot);
            return(t);
        }
        /// <summary>
        /// Creates a rotation transform that rotates around a given rotation center (pivot point)
        /// </summary>
        /// <param name="pivot">pivot point</param>
        /// <param name="degrees">rotation in degrees</param>
        /// <returns>A <see cref="Transformation2D"/> that rotates around a given pivot point.</returns>
        public static Transformation2D CreateRotationAround(Vector2 pivot, float degrees)
        {
            var t = new Transformation2D();

            t.TranslateGlobal(-pivot);
            t.RotateGlobal(degrees);
            t.TranslateGlobal(pivot);
            return(t);
        }