Case

Image.Orientation.left

A value that indicates a 90° counterclockwise rotation from the orientation of its original pixel data.

Declaration 宣言 

case left

See Also 参照

Getting Image Orientations

case up
A value that indicates the original pixel data matches the image’s intended display orientation.
case down
A value that indicates a 180° rotation of the image from the orientation of its original pixel data.
case right
A value that indicates a 90° clockwise rotation of the image from the orientation of its original pixel data.