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Lovell Fuller
2017-05-22 21:49:37 +01:00
parent 4c6804eadc
commit d6a63d11d7
4 changed files with 17 additions and 6 deletions
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7
docs/api-operation.md
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@@ -24,7 +24,10 @@
Rotate the output image by either an explicit angle
or auto-orient based on the EXIF `Orientation` tag.
Use this method without angle to determine the angle from EXIF data.
If an angle is provided, it is converted to a valid 90/180/270deg rotation.
For example, `-450` will produce a 270deg rotation.
If no angle is provided, it is determined from the EXIF data.
Mirroring is supported and may infer the use of a flip operation.
The use of `rotate` implies the removal of the EXIF `Orientation` tag, if any.
@@ -34,7 +37,7 @@ for example `rotate(x).extract(y)` will produce a different result to `extract(y
**Parameters**
- `angle` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** 0, 90, 180 or 270. (optional, default `auto`)
- `angle` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)** angle of rotation, must be a multiple of 90. (optional, default `auto`)
**Examples**

8
docs/changelog.md
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@@ -49,6 +49,14 @@ Requires libvips v8.5.5.
[#783](https://github.com/lovell/sharp/pull/783)
[@YvesBos](https://github.com/YvesBos)
* Add support for rotation using any multiple of +/-90 degrees.
[#791](https://github.com/lovell/sharp/pull/791)
[@ncoden](https://github.com/ncoden)
* Add "jpg" alias to toFormat as shortened form of "jpeg".
[#814](https://github.com/lovell/sharp/pull/814)
[@jingsam](https://github.com/jingsam)
### v0.17 - "*quill*"
Requires libvips v8.4.2.