[Digikam-devel] [Bug 114225] Free rotation using an horizontal line

[Mikolaj Machowski]

https://bugs.kde.org/show_bug.cgi?id=114225





--- Comment #16 from Mikolaj Machowski <mikmach wp pl>  2009-04-07 21:27:32 ---
Wow. Great thing. I have few ideas for simplification:

1. Make this new feature default option for Free-rotation
2. Don't use two buttons for setting points - one button which will assign
consecutively two points.
2a. If you really feel 2 buttons are necessary at least make them the same
color - I didn't understood why second circle isn't blue.
3. Similarly I am not sure if differentiation horizontal/vertical is that
useful. Overwhelming majority of corrections is just for few degrees to
strengthen horizon or make columns vertical. Simply heuristic: if line
connecting two set points are less than 45 degrees from horizontal line make it
horizontal adjustment, in the other case make it vertical.

With those 3 steps you can simplify that part of dialog to just two buttons.

4. Precision of set points - yes, this is problem now. "My" idea (from Hugin) -
after button press appears small panning widget with eg. 20px x 20 px 1:1 (or
with bigger zoom factor) of image. User can set there mark point precisely.
Such widget would be useful also in perspective correction or even crom. Maybe
not default action but with some modifier (Ctrl?).

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