rotate() inconsistencies between drivers

[ninze]

Issue description

Gd and Imagick drivers leave the image in a different state after rotation.

What version of Imagine are you using?

1.2.1-dev

What's the PHP version you are using?

PHP 7.2.1

What's the imaging library you are using [gd/imagick/gmagick/any]?

Imagick, Gd

Minimal PHP code to reproduce the error:

$size = $image->getSize();
$image->rotate(45);
$image->crop(new Point(0, 0), $size);

Output by Gd driver:

Output by Imagick driver:

The problem is that Imagick does not update image geometry after the rotation. I think a similar issue is described here: https://phpimagick.com/Tutorial/imageGeometryReset

Output from Gd seems to be the correct one.

The solution would be to call setImagePage() inside Imagick driver after the rotation.

[mlocati]

Fixed by #734