4.7. Shear
| 4. Transform Tools |

### 4.7. Shear

Revision History
Revision $Revision: 2429 $ | 2008-03-02 | j.h

Figure 13.109. The Shear tool in Toolbox

Shear tool is used to shift one part of an image, a layer, a selection or a path to a direction and the other part to the opposite direction. For instance, a horizontal shearing will shift the upper part to the right and the lower part to the left. A rectangle becomes a diamond. This is not a rotation: the image is distorted. To use this tool after selecting, click on the image or the selection: a grid is possibly surperimposed and the Shearing Information dialog is opened. By dragging the mouse pointer on the image you distort the image, horizontally or vertically according to the the direction given to the pointer. When you are satisfied, click on the Shear button in the info dialog to validate.

Figure 13.110. Shear example

| Note
You can't shear both ways at the same time, you have to use the shear tool twice on end.

#### 4.7.1. Activate the Tool

You can get to Shear tool in several ways :

- In the the image-menu through: Tools → Transform Tools → Shear,

- By clicking the tool icon: in Toolbox,

- or by using the Shift+S key combination.

#### 4.7.2. Options

Figure 13.111. Shear tool options

Overview

  The available tool options for the Shear Tool can be accessed by double clicking the Shear Tool icon.

Affect; Interpolation; Transform Direction; Clip Result; Preview

  | Note
  These options are described in Transform tools common options.

#### 4.7.3. Shearing Information

Figure 13.112. Shearing Information window

Shear magnitude X

  Here, you can set the horizontal shearing amplitude. A positive value produces a clock-wise tilt. A negative value gives a counter-clock-wise tilt. The unit used by shearing are half-pixels.

Shear magnitude Y

  As above, in the vertical direction.

4.6. Scale |  | 4.8. Perspective