Protogame.DefaultTransform.RecalculateSRTMatrixCache C# (CSharp) Method

        private void RecalculateSRTMatrixCache()
        {
            if (!_isSRTMatrix)
            {
                throw new InvalidOperationException("Attempted to update SRT matrix cache for non-SRT matrix.");
            }

            if (_isCachedSRTLocalMatrixUpToDate)
            {
                throw new InvalidOperationException("Attempted to update SRT matrix cache when it's already up-to-date.  This would incur a performance penalty if the operation continued.");
            }

            _cachedSRTLocalMatrix =
                Matrix.CreateScale(_srtLocalScale) *
                Matrix.CreateFromQuaternion(_srtLocalRotation) *
                Matrix.CreateTranslation(_srtLocalPosition);
            _isCachedSRTLocalMatrixUpToDate = true;
        }