Canvas Exif Orientation

draw a image on a canvas dependent on Exif Orientation.

``js
var CanvasExifOrientation = require('canvas-exif-orientation');
// drawn canvas element.
var canvas = CanvasExifOrientation.drawImage(img, orientation);
`

install

`
npm install canvas-exif-orientation
``

Orientation

* http://www.cipa.jp/std/documents/e/DC-008-2012_E.pdf
* http://www.cipa.jp/std/documents/j/DC-008-2012_J.pdf (Japanese)

$3

The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side.

!1

$3

The 0th row is at the visual top of the image, and the 0th column is the visual right-hand side.

!2

$3

The 0th row is at the visual bottom of the image, and the 0th column is the visual right-hand side.

!3

$3

The 0th row is at the visual bottom of the image, and the 0th column is the visual left-hand side.

!4

$3

The 0th row is the visual left-hand side of the image, and the 0th column is the visual top.

!5

$3

The 0th row is the visual right-hand side of the image, and the 0th column is the visual top.

!6

$3

The 0th row is the visual right-hand side of the image, and the 0th column is the visual bottom.

!7

$3

The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom.

!8