Protogame.DefaultTransform.RecalculateRTMatrixCache C# (CSharp) Méthode

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

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

            _cachedRTLocalMatrix =
                Matrix.CreateFromQuaternion(_srtLocalRotation) *
                Matrix.CreateTranslation(_srtLocalPosition);
            _isCachedRTLocalMatrixUpToDate = true;
        }