private static float CalculateHeightScale(ILineBuilder builder, float height)
        {
            if (!Utils.IsValid(builder))
            {
                return(1f);
            }

            return(builder.CalculateHeightScale(height));
        }
        /// ======================================================================

        private static float CalculateLengthScale(ILineBuilder builder, float length)
        {
            if (!Utils.IsValid(builder))
            {
                return(1f);
            }

            return(builder.CalculateLengthScale(length));
        }