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This tool is used to rotate the active layer, a selection or a path.
When you click on the image or the selection with this tool a
Rotation Information dialog is opened.
There, you can set the rotation axis, marked with a point, and the
rotation angle. You can do the same by dragging the mouse pointer on
the image or the rotation point.
4.5.2. Activating the Tool
You can access to the Selection Tool in different ways:
-
from the image menu bar
→ → ,
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by clicking the tool icon:
in the Toolbox,
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by using the
Shift+R
key combination.
4.5.3. Key modifiers (Defaults)
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Ctrl
-
Holding Ctrl will constrain the rotation
angle to 15 degrees increments.
Normally, tool options are displayed in a window attached under the
Toolbox as soon as you activate a tool. If they are not, you can access
them from the image menu bar through
→ → which opens the option window of the selected tool.
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Transform; Direction, Interpolation; Clipping; Preview
-
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Transform Direction
-
The Transform Direction sets which way or direction a layer is
rotated. The Normal mode will rotate the layer as one might
expect. If a layer is rotated 10 degrees to the right, then the
layer will be rendered as such. This behaviour is contrary to
Corrective rotation.
Corrective Rotation is primarily used to repair digital images
that are not straight. If the image is 13 degrees askew then you
need not try to rotate by that angle. By using Corrective Rotation
you can rotate visually and line up the layer with the image.
Because the transformation is reversed, or performed backwards,
the image will be rotated with sufficient angle to correct the
error.
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Constraints
-
15 Degrees (Ctrl) will constrain the rotation
to angles divisible by 15 degrees.
4.5.5. The Rotation Information window
-
Angle
-
Here you can set the rotation angle, from -180° to +180°, i.e
360°.
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Center X/Y
-
This option allows you to set the position of the rotation center,
represented by a large point in the image. A click-and-drag on
this point also allows you to move this center. Default unit of
measurement is pixel, but you can change it by using the drop-down
list.
![[Note]](images/note.png)
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Note |
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You can also rotate layers with
→ →
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