[Bug 166632] Object rotation indication works backwards

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=166632

--- Comment #3 from Regina Henschel <rb.henschel at t-online.de> ---
(In reply to Heiko Tietze from comment #2)
> Sounds reasonable to me. But maybe there was a reason to invert the numbers?

Rotation value has been in that orientation since the beginning in StarOffice.

The field shows the value so that it corresponds directly to the API property
`RotateAngle`, only that `RotateAngle` is in 1/100 degree. Look at the shape in
the Development Tools. I know that the API service `RotationDescription` is
deprecated because of the mathematically wrong orientation, see comment in API.
But look also at bug 147884.

The angles in Hatch and in Gradient filling are increasing counter-clockwise.

The angle difference in the status bar, that is shown while you drag-rotate,
has is increasing counter-clockwise.

The text rotation in table cells has it increasing counter-clockwise.

MS Office and SoftMaker have rotation angle increasing clockwise, Scribus has
it increasing counter-clockwise same as Libreoffice. PaintShopPro has an option
in the UI to determine the orientation of the field value.

My take it not to change it. There exists a wheel in some dialogs to illustrate
the direction. Perhaps make sure that such wheel is present in all dialogs that
have rotation angles?

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