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Update README.md to clarify specifying orientation from Exif data #82

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Oct 8, 2016
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Update README.md to clarify specifying orientation from Exif data #82

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15 changes: 9 additions & 6 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -194,9 +194,11 @@ Requires `canvas: true`.
* **crop**: Crops the image to the maxWidth/maxHeight constraints if set to
`true`.
Enabling the `crop` option also enables the `canvas` option.
* **orientation**: Allows to transform the canvas coordinates according to the
EXIF orientation specification.
Setting the `orientation` also enables the `canvas` option.
* **orientation**: Transform the canvas according to the
specified Exif orientation (number in range 1 to 8). See
[loadImage.parseMetaData](https://github.com/blueimp/JavaScript-Load-Image#meta-data-parsing)
for parsing EXIF data. Setting the `orientation` also enables the `canvas`
option.
* **canvas**: Returns the image as
[canvas](https://developer.mozilla.org/en/HTML/Canvas) element if set to `true`.
* **crossOrigin**: Sets the crossOrigin property on the img element for loading
Expand Down Expand Up @@ -266,9 +268,9 @@ Blob objects of resized images can be created via
[canvas.toBlob()](https://github.com/blueimp/JavaScript-Canvas-to-Blob).

### Exif parser
If you include the Load Image Exif Parser extension, the **parseMetaData**
callback **data** contains the additional property **exif** if Exif data could
be found in the given image.
If you include the Load Image Exif Parser extension, the argument passed to the
callback for **parseMetaData** will contain the additional property **exif** if
Exif data could be found in the given image.
The **exif** object stores the parsed Exif tags:

```js
Expand Down Expand Up @@ -313,3 +315,4 @@ The JavaScript Load Image script is released under the
Achim Stöhr.
* Exif tags mapping based on Jacob Seidelin's
[exif-js](https://github.com/jseidelin/exif-js).