AuraPhotoViewer.Services.ImageProviders.LocalImageProvider.GetImageRotate C# (CSharp) Метод

        private RotateFlipType GetImageRotate(double angle)
        {
            switch ((int)angle)
            {
                case 90:
                case -270:
                    return RotateFlipType.Rotate90FlipNone;
                case 180:
                case -180:
                    return RotateFlipType.Rotate180FlipNone;
                case 270:
                case -90:
                    return RotateFlipType.Rotate270FlipNone;
                default:
                    throw new ArgumentException("The agle rotate is invalid");
            }
        }
    }